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- Committer: Teddy Hogeborn
- Date: 2011-10-09 16:38:18 UTC
- mfrom: (513 trunk)
- mto: (237.4.29 release)
- mto: This revision was merged to the branch mainline in revision 514.
- Revision ID: teddy@recompile.se-20111009163818-ihb35bqq0iat18k2
Merge from trunk.
- files added:
- initramfs-tools-hook-conf
- files removed:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
1
#!/usr/bin/python
2
# -*- mode: python; after-save-hook: (lambda () (let ((command (if (fboundp 'file-local-name) (file-local-name (buffer-file-name)) (or (file-remote-p (buffer-file-name) 'localname) (buffer-file-name))))) (if (= (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (format "%s --check" (shell-quote-argument command)) nil "*Test*")) 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w))) (progn (with-current-buffer "*Test*" (compilation-mode)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); coding: utf-8 -*-
3
#
2
# -*- mode: python; coding: utf-8 -*-
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
28
#
26
#
29
27
# You should have received a copy of the GNU General Public License
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
32
31
# Contact the authors at <mandos@recompile.se>.
33
#
32
#
34
33
35
34
from __future__ import (division, absolute_import, print_function,
36
35
unicode_literals)
37
36
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
37
import SocketServer as socketserver
47
38
import socket
48
39
import argparse
49
40
import datetime
50
41
import errno
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
55
49
import sys
56
50
import re
57
51
import os
66
60
import struct
67
61
import fcntl
68
62
import functools
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
63
import cPickle as pickle
73
64
import multiprocessing
74
65
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
80
import unittest
81
66
82
67
import dbus
83
68
import dbus.service
84
import gi
85
from gi.repository import GLib
69
import gobject
70
import avahi
86
71
from dbus.mainloop.glib import DBusGMainLoop
87
72
import ctypes
88
73
import ctypes.util
89
74
import xml.dom.minidom
90
75
import inspect
91
76
92
if sys.version_info.major == 2:
93
__metaclass__ = type
94
95
# Show warnings by default
96
if not sys.warnoptions:
97
import warnings
98
warnings.simplefilter("default")
99
100
# Try to find the value of SO_BINDTODEVICE:
101
77
try:
102
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
103
# newer, and it is also the most natural place for it:
104
78
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
105
79
except AttributeError:
106
80
try:
107
# This is where SO_BINDTODEVICE was up to and including Python
108
# 2.6, and also 3.2:
109
81
from IN import SO_BINDTODEVICE
110
82
except ImportError:
111
# In Python 2.7 it seems to have been removed entirely.
112
# Try running the C preprocessor:
113
try:
114
cc = subprocess.Popen(["cc", "--language=c", "-E",
115
"/dev/stdin"],
116
stdin=subprocess.PIPE,
117
stdout=subprocess.PIPE)
118
stdout = cc.communicate(
119
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
120
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
121
except (OSError, ValueError, IndexError):
122
# No value found
123
SO_BINDTODEVICE = None
124
125
if sys.version_info.major == 2:
126
str = unicode
127
128
if sys.version_info < (3, 2):
129
configparser.Configparser = configparser.SafeConfigParser
130
131
version = "1.8.8"
132
stored_state_file = "clients.pickle"
133
134
logger = logging.getLogger()
135
logging.captureWarnings(True) # Show warnings via the logging system
136
syslogger = None
137
138
try:
139
if_nametoindex = ctypes.cdll.LoadLibrary(
140
ctypes.util.find_library("c")).if_nametoindex
141
except (OSError, AttributeError):
142
143
def if_nametoindex(interface):
144
"Get an interface index the hard way, i.e. using fcntl()"
145
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
146
with contextlib.closing(socket.socket()) as s:
147
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
148
struct.pack(b"16s16x", interface))
149
interface_index = struct.unpack("I", ifreq[16:20])[0]
150
return interface_index
151
152
153
def copy_function(func):
154
"""Make a copy of a function"""
155
if sys.version_info.major == 2:
156
return types.FunctionType(func.func_code,
157
func.func_globals,
158
func.func_name,
159
func.func_defaults,
160
func.func_closure)
161
else:
162
return types.FunctionType(func.__code__,
163
func.__globals__,
164
func.__name__,
165
func.__defaults__,
166
func.__closure__)
167
168
169
def initlogger(debug, level=logging.WARNING):
170
"""init logger and add loglevel"""
171
172
global syslogger
173
syslogger = (logging.handlers.SysLogHandler(
174
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
175
address="/dev/log"))
176
syslogger.setFormatter(logging.Formatter
177
('Mandos [%(process)d]: %(levelname)s:'
178
' %(message)s'))
179
logger.addHandler(syslogger)
180
181
if debug:
182
console = logging.StreamHandler()
183
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
184
' [%(process)d]:'
185
' %(levelname)s:'
186
' %(message)s'))
187
logger.addHandler(console)
188
logger.setLevel(level)
189
190
191
class PGPError(Exception):
192
"""Exception if encryption/decryption fails"""
193
pass
194
195
196
class PGPEngine:
197
"""A simple class for OpenPGP symmetric encryption & decryption"""
198
199
def __init__(self):
200
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
201
self.gpg = "gpg"
202
try:
203
output = subprocess.check_output(["gpgconf"])
204
for line in output.splitlines():
205
name, text, path = line.split(b":")
206
if name == "gpg":
207
self.gpg = path
208
break
209
except OSError as e:
210
if e.errno != errno.ENOENT:
211
raise
212
self.gnupgargs = ['--batch',
213
'--homedir', self.tempdir,
214
'--force-mdc',
215
'--quiet']
216
# Only GPG version 1 has the --no-use-agent option.
217
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
218
self.gnupgargs.append("--no-use-agent")
219
220
def __enter__(self):
221
return self
222
223
def __exit__(self, exc_type, exc_value, traceback):
224
self._cleanup()
225
return False
226
227
def __del__(self):
228
self._cleanup()
229
230
def _cleanup(self):
231
if self.tempdir is not None:
232
# Delete contents of tempdir
233
for root, dirs, files in os.walk(self.tempdir,
234
topdown=False):
235
for filename in files:
236
os.remove(os.path.join(root, filename))
237
for dirname in dirs:
238
os.rmdir(os.path.join(root, dirname))
239
# Remove tempdir
240
os.rmdir(self.tempdir)
241
self.tempdir = None
242
243
def password_encode(self, password):
244
# Passphrase can not be empty and can not contain newlines or
245
# NUL bytes. So we prefix it and hex encode it.
246
encoded = b"mandos" + binascii.hexlify(password)
247
if len(encoded) > 2048:
248
# GnuPG can't handle long passwords, so encode differently
249
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
250
.replace(b"\n", b"\\n")
251
.replace(b"\0", b"\\x00"))
252
return encoded
253
254
def encrypt(self, data, password):
255
passphrase = self.password_encode(password)
256
with tempfile.NamedTemporaryFile(
257
dir=self.tempdir) as passfile:
258
passfile.write(passphrase)
259
passfile.flush()
260
proc = subprocess.Popen([self.gpg, '--symmetric',
261
'--passphrase-file',
262
passfile.name]
263
+ self.gnupgargs,
264
stdin=subprocess.PIPE,
265
stdout=subprocess.PIPE,
266
stderr=subprocess.PIPE)
267
ciphertext, err = proc.communicate(input=data)
268
if proc.returncode != 0:
269
raise PGPError(err)
270
return ciphertext
271
272
def decrypt(self, data, password):
273
passphrase = self.password_encode(password)
274
with tempfile.NamedTemporaryFile(
275
dir=self.tempdir) as passfile:
276
passfile.write(passphrase)
277
passfile.flush()
278
proc = subprocess.Popen([self.gpg, '--decrypt',
279
'--passphrase-file',
280
passfile.name]
281
+ self.gnupgargs,
282
stdin=subprocess.PIPE,
283
stdout=subprocess.PIPE,
284
stderr=subprocess.PIPE)
285
decrypted_plaintext, err = proc.communicate(input=data)
286
if proc.returncode != 0:
287
raise PGPError(err)
288
return decrypted_plaintext
289
290
291
# Pretend that we have an Avahi module
292
class avahi:
293
"""This isn't so much a class as it is a module-like namespace."""
294
IF_UNSPEC = -1 # avahi-common/address.h
295
PROTO_UNSPEC = -1 # avahi-common/address.h
296
PROTO_INET = 0 # avahi-common/address.h
297
PROTO_INET6 = 1 # avahi-common/address.h
298
DBUS_NAME = "org.freedesktop.Avahi"
299
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
300
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
301
DBUS_PATH_SERVER = "/"
302
303
@staticmethod
304
def string_array_to_txt_array(t):
305
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
306
for s in t), signature="ay")
307
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
308
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
309
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
310
SERVER_INVALID = 0 # avahi-common/defs.h
311
SERVER_REGISTERING = 1 # avahi-common/defs.h
312
SERVER_RUNNING = 2 # avahi-common/defs.h
313
SERVER_COLLISION = 3 # avahi-common/defs.h
314
SERVER_FAILURE = 4 # avahi-common/defs.h
315
83
SO_BINDTODEVICE = None
84
85
86
version = "1.3.1"
87
88
#logger = logging.getLogger('mandos')
89
logger = logging.Logger('mandos')
90
syslogger = (logging.handlers.SysLogHandler
91
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
92
address = str("/dev/log")))
93
syslogger.setFormatter(logging.Formatter
94
('Mandos [%(process)d]: %(levelname)s:'
95
' %(message)s'))
96
logger.addHandler(syslogger)
97
98
console = logging.StreamHandler()
99
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
100
' %(levelname)s:'
101
' %(message)s'))
102
logger.addHandler(console)
316
103
317
104
class AvahiError(Exception):
318
105
def __init__(self, value, *args, **kwargs):
319
106
self.value = value
320
return super(AvahiError, self).__init__(value, *args,
321
**kwargs)
322
107
super(AvahiError, self).__init__(value, *args, **kwargs)
108
def __unicode__(self):
109
return unicode(repr(self.value))
323
110
324
111
class AvahiServiceError(AvahiError):
325
112
pass
326
113
327
328
114
class AvahiGroupError(AvahiError):
329
115
pass
330
116
331
117
332
class AvahiService:
118
class AvahiService(object):
333
119
"""An Avahi (Zeroconf) service.
334
120
335
121
Attributes:
336
122
interface: integer; avahi.IF_UNSPEC or an interface index.
337
123
Used to optionally bind to the specified interface.
338
124
name: string; Example: 'Mandos'
339
125
type: string; Example: '_mandos._tcp'.
340
See <https://www.iana.org/assignments/service-names-port-numbers>
126
See <http://www.dns-sd.org/ServiceTypes.html>
341
127
port: integer; what port to announce
342
128
TXT: list of strings; TXT record for the service
343
129
domain: string; Domain to publish on, default to .local if empty.
349
135
server: D-Bus Server
350
136
bus: dbus.SystemBus()
351
137
"""
352
353
def __init__(self,
354
interface=avahi.IF_UNSPEC,
355
name=None,
356
servicetype=None,
357
port=None,
358
TXT=None,
359
domain="",
360
host="",
361
max_renames=32768,
362
protocol=avahi.PROTO_UNSPEC,
363
bus=None):
138
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
139
servicetype = None, port = None, TXT = None,
140
domain = "", host = "", max_renames = 32768,
141
protocol = avahi.PROTO_UNSPEC, bus = None):
364
142
self.interface = interface
365
143
self.name = name
366
144
self.type = servicetype
375
153
self.server = None
376
154
self.bus = bus
377
155
self.entry_group_state_changed_match = None
378
379
def rename(self, remove=True):
156
def rename(self):
380
157
"""Derived from the Avahi example code"""
381
158
if self.rename_count >= self.max_renames:
382
159
logger.critical("No suitable Zeroconf service name found"
383
160
" after %i retries, exiting.",
384
161
self.rename_count)
385
162
raise AvahiServiceError("Too many renames")
386
self.name = str(
387
self.server.GetAlternativeServiceName(self.name))
388
self.rename_count += 1
163
self.name = unicode(self.server
164
.GetAlternativeServiceName(self.name))
389
165
logger.info("Changing Zeroconf service name to %r ...",
390
166
self.name)
391
if remove:
392
self.remove()
167
syslogger.setFormatter(logging.Formatter
168
('Mandos (%s) [%%(process)d]:'
169
' %%(levelname)s: %%(message)s'
170
% self.name))
171
self.remove()
393
172
try:
394
173
self.add()
395
174
except dbus.exceptions.DBusException as error:
396
if (error.get_dbus_name()
397
== "org.freedesktop.Avahi.CollisionError"):
398
logger.info("Local Zeroconf service name collision.")
399
return self.rename(remove=False)
400
else:
401
logger.critical("D-Bus Exception", exc_info=error)
402
self.cleanup()
403
os._exit(1)
404
175
logger.critical("DBusException: %s", error)
176
self.cleanup()
177
os._exit(1)
178
self.rename_count += 1
405
179
def remove(self):
406
180
"""Derived from the Avahi example code"""
407
181
if self.entry_group_state_changed_match is not None:
409
183
self.entry_group_state_changed_match = None
410
184
if self.group is not None:
411
185
self.group.Reset()
412
413
186
def add(self):
414
187
"""Derived from the Avahi example code"""
415
188
self.remove()
420
193
avahi.DBUS_INTERFACE_ENTRY_GROUP)
421
194
self.entry_group_state_changed_match = (
422
195
self.group.connect_to_signal(
423
'StateChanged', self.entry_group_state_changed))
196
'StateChanged', self .entry_group_state_changed))
424
197
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
425
198
self.name, self.type)
426
199
self.group.AddService(
432
205
dbus.UInt16(self.port),
433
206
avahi.string_array_to_txt_array(self.TXT))
434
207
self.group.Commit()
435
436
208
def entry_group_state_changed(self, state, error):
437
209
"""Derived from the Avahi example code"""
438
210
logger.debug("Avahi entry group state change: %i", state)
439
211
440
212
if state == avahi.ENTRY_GROUP_ESTABLISHED:
441
213
logger.debug("Zeroconf service established.")
442
214
elif state == avahi.ENTRY_GROUP_COLLISION:
444
216
self.rename()
445
217
elif state == avahi.ENTRY_GROUP_FAILURE:
446
218
logger.critical("Avahi: Error in group state changed %s",
447
str(error))
448
raise AvahiGroupError("State changed: {!s}".format(error))
449
219
unicode(error))
220
raise AvahiGroupError("State changed: %s"
221
% unicode(error))
450
222
def cleanup(self):
451
223
"""Derived from the Avahi example code"""
452
224
if self.group is not None:
453
225
try:
454
226
self.group.Free()
455
227
except (dbus.exceptions.UnknownMethodException,
456
dbus.exceptions.DBusException):
228
dbus.exceptions.DBusException) as e:
457
229
pass
458
230
self.group = None
459
231
self.remove()
460
461
232
def server_state_changed(self, state, error=None):
462
233
"""Derived from the Avahi example code"""
463
234
logger.debug("Avahi server state change: %i", state)
464
bad_states = {
465
avahi.SERVER_INVALID: "Zeroconf server invalid",
466
avahi.SERVER_REGISTERING: None,
467
avahi.SERVER_COLLISION: "Zeroconf server name collision",
468
avahi.SERVER_FAILURE: "Zeroconf server failure",
469
}
235
bad_states = { avahi.SERVER_INVALID:
236
"Zeroconf server invalid",
237
avahi.SERVER_REGISTERING: None,
238
avahi.SERVER_COLLISION:
239
"Zeroconf server name collision",
240
avahi.SERVER_FAILURE:
241
"Zeroconf server failure" }
470
242
if state in bad_states:
471
243
if bad_states[state] is not None:
472
244
if error is None:
475
247
logger.error(bad_states[state] + ": %r", error)
476
248
self.cleanup()
477
249
elif state == avahi.SERVER_RUNNING:
478
try:
479
self.add()
480
except dbus.exceptions.DBusException as error:
481
if (error.get_dbus_name()
482
== "org.freedesktop.Avahi.CollisionError"):
483
logger.info("Local Zeroconf service name"
484
" collision.")
485
return self.rename(remove=False)
486
else:
487
logger.critical("D-Bus Exception", exc_info=error)
488
self.cleanup()
489
os._exit(1)
250
self.add()
490
251
else:
491
252
if error is None:
492
253
logger.debug("Unknown state: %r", state)
493
254
else:
494
255
logger.debug("Unknown state: %r: %r", state, error)
495
496
256
def activate(self):
497
257
"""Derived from the Avahi example code"""
498
258
if self.server is None:
502
262
follow_name_owner_changes=True),
503
263
avahi.DBUS_INTERFACE_SERVER)
504
264
self.server.connect_to_signal("StateChanged",
505
self.server_state_changed)
265
self.server_state_changed)
506
266
self.server_state_changed(self.server.GetState())
507
267
508
268
509
class AvahiServiceToSyslog(AvahiService):
510
def rename(self, *args, **kwargs):
511
"""Add the new name to the syslog messages"""
512
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
513
syslogger.setFormatter(logging.Formatter(
514
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
515
.format(self.name)))
516
return ret
517
518
519
# Pretend that we have a GnuTLS module
520
class gnutls:
521
"""This isn't so much a class as it is a module-like namespace."""
522
523
library = ctypes.util.find_library("gnutls")
524
if library is None:
525
library = ctypes.util.find_library("gnutls-deb0")
526
_library = ctypes.cdll.LoadLibrary(library)
527
del library
528
529
# Unless otherwise indicated, the constants and types below are
530
# all from the gnutls/gnutls.h C header file.
531
532
# Constants
533
E_SUCCESS = 0
534
E_INTERRUPTED = -52
535
E_AGAIN = -28
536
CRT_OPENPGP = 2
537
CRT_RAWPK = 3
538
CLIENT = 2
539
SHUT_RDWR = 0
540
CRD_CERTIFICATE = 1
541
E_NO_CERTIFICATE_FOUND = -49
542
X509_FMT_DER = 0
543
NO_TICKETS = 1<<10
544
ENABLE_RAWPK = 1<<18
545
CTYPE_PEERS = 3
546
KEYID_USE_SHA256 = 1 # gnutls/x509.h
547
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
548
549
# Types
550
class session_int(ctypes.Structure):
551
_fields_ = []
552
session_t = ctypes.POINTER(session_int)
553
554
class certificate_credentials_st(ctypes.Structure):
555
_fields_ = []
556
certificate_credentials_t = ctypes.POINTER(
557
certificate_credentials_st)
558
certificate_type_t = ctypes.c_int
559
560
class datum_t(ctypes.Structure):
561
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
562
('size', ctypes.c_uint)]
563
564
class openpgp_crt_int(ctypes.Structure):
565
_fields_ = []
566
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
567
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
568
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
569
credentials_type_t = ctypes.c_int
570
transport_ptr_t = ctypes.c_void_p
571
close_request_t = ctypes.c_int
572
573
# Exceptions
574
class Error(Exception):
575
def __init__(self, message=None, code=None, args=()):
576
# Default usage is by a message string, but if a return
577
# code is passed, convert it to a string with
578
# gnutls.strerror()
579
self.code = code
580
if message is None and code is not None:
581
message = gnutls.strerror(code)
582
return super(gnutls.Error, self).__init__(
583
message, *args)
584
585
class CertificateSecurityError(Error):
586
pass
587
588
# Classes
589
class Credentials:
590
def __init__(self):
591
self._c_object = gnutls.certificate_credentials_t()
592
gnutls.certificate_allocate_credentials(
593
ctypes.byref(self._c_object))
594
self.type = gnutls.CRD_CERTIFICATE
595
596
def __del__(self):
597
gnutls.certificate_free_credentials(self._c_object)
598
599
class ClientSession:
600
def __init__(self, socket, credentials=None):
601
self._c_object = gnutls.session_t()
602
gnutls_flags = gnutls.CLIENT
603
if gnutls.check_version(b"3.5.6"):
604
gnutls_flags |= gnutls.NO_TICKETS
605
if gnutls.has_rawpk:
606
gnutls_flags |= gnutls.ENABLE_RAWPK
607
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
608
del gnutls_flags
609
gnutls.set_default_priority(self._c_object)
610
gnutls.transport_set_ptr(self._c_object, socket.fileno())
611
gnutls.handshake_set_private_extensions(self._c_object,
612
True)
613
self.socket = socket
614
if credentials is None:
615
credentials = gnutls.Credentials()
616
gnutls.credentials_set(self._c_object, credentials.type,
617
ctypes.cast(credentials._c_object,
618
ctypes.c_void_p))
619
self.credentials = credentials
620
621
def __del__(self):
622
gnutls.deinit(self._c_object)
623
624
def handshake(self):
625
return gnutls.handshake(self._c_object)
626
627
def send(self, data):
628
data = bytes(data)
629
data_len = len(data)
630
while data_len > 0:
631
data_len -= gnutls.record_send(self._c_object,
632
data[-data_len:],
633
data_len)
634
635
def bye(self):
636
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
637
638
# Error handling functions
639
def _error_code(result):
640
"""A function to raise exceptions on errors, suitable
641
for the 'restype' attribute on ctypes functions"""
642
if result >= 0:
643
return result
644
if result == gnutls.E_NO_CERTIFICATE_FOUND:
645
raise gnutls.CertificateSecurityError(code=result)
646
raise gnutls.Error(code=result)
647
648
def _retry_on_error(result, func, arguments):
649
"""A function to retry on some errors, suitable
650
for the 'errcheck' attribute on ctypes functions"""
651
while result < 0:
652
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
653
return _error_code(result)
654
result = func(*arguments)
655
return result
656
657
# Unless otherwise indicated, the function declarations below are
658
# all from the gnutls/gnutls.h C header file.
659
660
# Functions
661
priority_set_direct = _library.gnutls_priority_set_direct
662
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
663
ctypes.POINTER(ctypes.c_char_p)]
664
priority_set_direct.restype = _error_code
665
666
init = _library.gnutls_init
667
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
668
init.restype = _error_code
669
670
set_default_priority = _library.gnutls_set_default_priority
671
set_default_priority.argtypes = [session_t]
672
set_default_priority.restype = _error_code
673
674
record_send = _library.gnutls_record_send
675
record_send.argtypes = [session_t, ctypes.c_void_p,
676
ctypes.c_size_t]
677
record_send.restype = ctypes.c_ssize_t
678
record_send.errcheck = _retry_on_error
679
680
certificate_allocate_credentials = (
681
_library.gnutls_certificate_allocate_credentials)
682
certificate_allocate_credentials.argtypes = [
683
ctypes.POINTER(certificate_credentials_t)]
684
certificate_allocate_credentials.restype = _error_code
685
686
certificate_free_credentials = (
687
_library.gnutls_certificate_free_credentials)
688
certificate_free_credentials.argtypes = [
689
certificate_credentials_t]
690
certificate_free_credentials.restype = None
691
692
handshake_set_private_extensions = (
693
_library.gnutls_handshake_set_private_extensions)
694
handshake_set_private_extensions.argtypes = [session_t,
695
ctypes.c_int]
696
handshake_set_private_extensions.restype = None
697
698
credentials_set = _library.gnutls_credentials_set
699
credentials_set.argtypes = [session_t, credentials_type_t,
700
ctypes.c_void_p]
701
credentials_set.restype = _error_code
702
703
strerror = _library.gnutls_strerror
704
strerror.argtypes = [ctypes.c_int]
705
strerror.restype = ctypes.c_char_p
706
707
certificate_type_get = _library.gnutls_certificate_type_get
708
certificate_type_get.argtypes = [session_t]
709
certificate_type_get.restype = _error_code
710
711
certificate_get_peers = _library.gnutls_certificate_get_peers
712
certificate_get_peers.argtypes = [session_t,
713
ctypes.POINTER(ctypes.c_uint)]
714
certificate_get_peers.restype = ctypes.POINTER(datum_t)
715
716
global_set_log_level = _library.gnutls_global_set_log_level
717
global_set_log_level.argtypes = [ctypes.c_int]
718
global_set_log_level.restype = None
719
720
global_set_log_function = _library.gnutls_global_set_log_function
721
global_set_log_function.argtypes = [log_func]
722
global_set_log_function.restype = None
723
724
deinit = _library.gnutls_deinit
725
deinit.argtypes = [session_t]
726
deinit.restype = None
727
728
handshake = _library.gnutls_handshake
729
handshake.argtypes = [session_t]
730
handshake.restype = _error_code
731
handshake.errcheck = _retry_on_error
732
733
transport_set_ptr = _library.gnutls_transport_set_ptr
734
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
735
transport_set_ptr.restype = None
736
737
bye = _library.gnutls_bye
738
bye.argtypes = [session_t, close_request_t]
739
bye.restype = _error_code
740
bye.errcheck = _retry_on_error
741
742
check_version = _library.gnutls_check_version
743
check_version.argtypes = [ctypes.c_char_p]
744
check_version.restype = ctypes.c_char_p
745
746
_need_version = b"3.3.0"
747
if check_version(_need_version) is None:
748
raise self.Error("Needs GnuTLS {} or later"
749
.format(_need_version))
750
751
_tls_rawpk_version = b"3.6.6"
752
has_rawpk = bool(check_version(_tls_rawpk_version))
753
754
if has_rawpk:
755
# Types
756
class pubkey_st(ctypes.Structure):
757
_fields = []
758
pubkey_t = ctypes.POINTER(pubkey_st)
759
760
x509_crt_fmt_t = ctypes.c_int
761
762
# All the function declarations below are from gnutls/abstract.h
763
pubkey_init = _library.gnutls_pubkey_init
764
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
765
pubkey_init.restype = _error_code
766
767
pubkey_import = _library.gnutls_pubkey_import
768
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
769
x509_crt_fmt_t]
770
pubkey_import.restype = _error_code
771
772
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
773
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
774
ctypes.POINTER(ctypes.c_ubyte),
775
ctypes.POINTER(ctypes.c_size_t)]
776
pubkey_get_key_id.restype = _error_code
777
778
pubkey_deinit = _library.gnutls_pubkey_deinit
779
pubkey_deinit.argtypes = [pubkey_t]
780
pubkey_deinit.restype = None
781
else:
782
# All the function declarations below are from gnutls/openpgp.h
783
784
openpgp_crt_init = _library.gnutls_openpgp_crt_init
785
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
786
openpgp_crt_init.restype = _error_code
787
788
openpgp_crt_import = _library.gnutls_openpgp_crt_import
789
openpgp_crt_import.argtypes = [openpgp_crt_t,
790
ctypes.POINTER(datum_t),
791
openpgp_crt_fmt_t]
792
openpgp_crt_import.restype = _error_code
793
794
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
795
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
796
ctypes.POINTER(ctypes.c_uint)]
797
openpgp_crt_verify_self.restype = _error_code
798
799
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
800
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
801
openpgp_crt_deinit.restype = None
802
803
openpgp_crt_get_fingerprint = (
804
_library.gnutls_openpgp_crt_get_fingerprint)
805
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
806
ctypes.c_void_p,
807
ctypes.POINTER(
808
ctypes.c_size_t)]
809
openpgp_crt_get_fingerprint.restype = _error_code
810
811
if check_version(b"3.6.4"):
812
certificate_type_get2 = _library.gnutls_certificate_type_get2
813
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
814
certificate_type_get2.restype = _error_code
815
816
# Remove non-public functions
817
del _error_code, _retry_on_error
818
819
820
def call_pipe(connection, # : multiprocessing.Connection
821
func, *args, **kwargs):
822
"""This function is meant to be called by multiprocessing.Process
823
824
This function runs func(*args, **kwargs), and writes the resulting
825
return value on the provided multiprocessing.Connection.
826
"""
827
connection.send(func(*args, **kwargs))
828
connection.close()
829
830
831
class Client:
269
def _timedelta_to_milliseconds(td):
270
"Convert a datetime.timedelta() to milliseconds"
271
return ((td.days * 24 * 60 * 60 * 1000)
272
+ (td.seconds * 1000)
273
+ (td.microseconds // 1000))
274
275
class Client(object):
832
276
"""A representation of a client host served by this server.
833
277
834
278
Attributes:
835
approved: bool(); 'None' if not yet approved/disapproved
279
_approved: bool(); 'None' if not yet approved/disapproved
836
280
approval_delay: datetime.timedelta(); Time to wait for approval
837
281
approval_duration: datetime.timedelta(); Duration of one approval
838
checker: multiprocessing.Process(); a running checker process used
839
to see if the client lives. 'None' if no process is
840
running.
841
checker_callback_tag: a GLib event source tag, or None
282
checker: subprocess.Popen(); a running checker process used
283
to see if the client lives.
284
'None' if no process is running.
285
checker_callback_tag: a gobject event source tag, or None
842
286
checker_command: string; External command which is run to check
843
287
if client lives. %() expansions are done at
844
288
runtime with vars(self) as dict, so that for
845
289
instance %(name)s can be used in the command.
846
checker_initiator_tag: a GLib event source tag, or None
290
checker_initiator_tag: a gobject event source tag, or None
847
291
created: datetime.datetime(); (UTC) object creation
848
client_structure: Object describing what attributes a client has
849
and is used for storing the client at exit
850
292
current_checker_command: string; current running checker_command
851
disable_initiator_tag: a GLib event source tag, or None
293
disable_hook: If set, called by disable() as disable_hook(self)
294
disable_initiator_tag: a gobject event source tag, or None
852
295
enabled: bool()
853
296
fingerprint: string (40 or 32 hexadecimal digits); used to
854
uniquely identify an OpenPGP client
855
key_id: string (64 hexadecimal digits); used to uniquely identify
856
a client using raw public keys
297
uniquely identify the client
857
298
host: string; available for use by the checker command
858
299
interval: datetime.timedelta(); How often to start a new checker
859
300
last_approval_request: datetime.datetime(); (UTC) or None
860
301
last_checked_ok: datetime.datetime(); (UTC) or None
861
last_checker_status: integer between 0 and 255 reflecting exit
862
status of last checker. -1 reflects crashed
863
checker, -2 means no checker completed yet.
864
last_checker_signal: The signal which killed the last checker, if
865
last_checker_status is -1
866
last_enabled: datetime.datetime(); (UTC) or None
302
last_enabled: datetime.datetime(); (UTC)
867
303
name: string; from the config file, used in log messages and
868
304
D-Bus identifiers
869
305
secret: bytestring; sent verbatim (over TLS) to client
870
306
timeout: datetime.timedelta(); How long from last_checked_ok
871
307
until this client is disabled
872
extended_timeout: extra long timeout when secret has been sent
308
extended_timeout: extra long timeout when password has been sent
873
309
runtime_expansions: Allowed attributes for runtime expansion.
874
310
expires: datetime.datetime(); time (UTC) when a client will be
875
311
disabled, or None
876
server_settings: The server_settings dict from main()
877
312
"""
878
313
879
314
runtime_expansions = ("approval_delay", "approval_duration",
880
"created", "enabled", "expires", "key_id",
881
"fingerprint", "host", "interval",
882
"last_approval_request", "last_checked_ok",
315
"created", "enabled", "fingerprint",
316
"host", "interval", "last_checked_ok",
883
317
"last_enabled", "name", "timeout")
884
client_defaults = {
885
"timeout": "PT5M",
886
"extended_timeout": "PT15M",
887
"interval": "PT2M",
888
"checker": "fping -q -- %%(host)s",
889
"host": "",
890
"approval_delay": "PT0S",
891
"approval_duration": "PT1S",
892
"approved_by_default": "True",
893
"enabled": "True",
894
}
895
896
@staticmethod
897
def config_parser(config):
898
"""Construct a new dict of client settings of this form:
899
{ client_name: {setting_name: value, ...}, ...}
900
with exceptions for any special settings as defined above.
901
NOTE: Must be a pure function. Must return the same result
902
value given the same arguments.
903
"""
904
settings = {}
905
for client_name in config.sections():
906
section = dict(config.items(client_name))
907
client = settings[client_name] = {}
908
909
client["host"] = section["host"]
910
# Reformat values from string types to Python types
911
client["approved_by_default"] = config.getboolean(
912
client_name, "approved_by_default")
913
client["enabled"] = config.getboolean(client_name,
914
"enabled")
915
916
# Uppercase and remove spaces from key_id and fingerprint
917
# for later comparison purposes with return value from the
918
# key_id() and fingerprint() functions
919
client["key_id"] = (section.get("key_id", "").upper()
920
.replace(" ", ""))
921
client["fingerprint"] = (section["fingerprint"].upper()
922
.replace(" ", ""))
923
if "secret" in section:
924
client["secret"] = codecs.decode(section["secret"]
925
.encode("utf-8"),
926
"base64")
927
elif "secfile" in section:
928
with open(os.path.expanduser(os.path.expandvars
929
(section["secfile"])),
930
"rb") as secfile:
931
client["secret"] = secfile.read()
932
else:
933
raise TypeError("No secret or secfile for section {}"
934
.format(section))
935
client["timeout"] = string_to_delta(section["timeout"])
936
client["extended_timeout"] = string_to_delta(
937
section["extended_timeout"])
938
client["interval"] = string_to_delta(section["interval"])
939
client["approval_delay"] = string_to_delta(
940
section["approval_delay"])
941
client["approval_duration"] = string_to_delta(
942
section["approval_duration"])
943
client["checker_command"] = section["checker"]
944
client["last_approval_request"] = None
945
client["last_checked_ok"] = None
946
client["last_checker_status"] = -2
947
948
return settings
949
950
def __init__(self, settings, name=None, server_settings=None):
318
319
def timeout_milliseconds(self):
320
"Return the 'timeout' attribute in milliseconds"
321
return _timedelta_to_milliseconds(self.timeout)
322
323
def extended_timeout_milliseconds(self):
324
"Return the 'extended_timeout' attribute in milliseconds"
325
return _timedelta_to_milliseconds(self.extended_timeout)
326
327
def interval_milliseconds(self):
328
"Return the 'interval' attribute in milliseconds"
329
return _timedelta_to_milliseconds(self.interval)
330
331
def approval_delay_milliseconds(self):
332
return _timedelta_to_milliseconds(self.approval_delay)
333
334
def __init__(self, name = None, disable_hook=None, config=None):
335
"""Note: the 'checker' key in 'config' sets the
336
'checker_command' attribute and *not* the 'checker'
337
attribute."""
951
338
self.name = name
952
if server_settings is None:
953
server_settings = {}
954
self.server_settings = server_settings
955
# adding all client settings
956
for setting, value in settings.items():
957
setattr(self, setting, value)
958
959
if self.enabled:
960
if not hasattr(self, "last_enabled"):
961
self.last_enabled = datetime.datetime.utcnow()
962
if not hasattr(self, "expires"):
963
self.expires = (datetime.datetime.utcnow()
964
+ self.timeout)
965
else:
966
self.last_enabled = None
967
self.expires = None
968
339
if config is None:
340
config = {}
969
341
logger.debug("Creating client %r", self.name)
970
logger.debug(" Key ID: %s", self.key_id)
342
# Uppercase and remove spaces from fingerprint for later
343
# comparison purposes with return value from the fingerprint()
344
# function
345
self.fingerprint = (config["fingerprint"].upper()
346
.replace(" ", ""))
971
347
logger.debug(" Fingerprint: %s", self.fingerprint)
972
self.created = settings.get("created",
973
datetime.datetime.utcnow())
974
975
# attributes specific for this server instance
348
if "secret" in config:
349
self.secret = config["secret"].decode("base64")
350
elif "secfile" in config:
351
with open(os.path.expanduser(os.path.expandvars
352
(config["secfile"])),
353
"rb") as secfile:
354
self.secret = secfile.read()
355
else:
356
raise TypeError("No secret or secfile for client %s"
357
% self.name)
358
self.host = config.get("host", "")
359
self.created = datetime.datetime.utcnow()
360
self.enabled = False
361
self.last_approval_request = None
362
self.last_enabled = None
363
self.last_checked_ok = None
364
self.timeout = string_to_delta(config["timeout"])
365
self.extended_timeout = string_to_delta(config
366
["extended_timeout"])
367
self.interval = string_to_delta(config["interval"])
368
self.disable_hook = disable_hook
976
369
self.checker = None
977
370
self.checker_initiator_tag = None
978
371
self.disable_initiator_tag = None
372
self.expires = None
979
373
self.checker_callback_tag = None
374
self.checker_command = config["checker"]
980
375
self.current_checker_command = None
981
self.approved = None
376
self.last_connect = None
377
self._approved = None
378
self.approved_by_default = config.get("approved_by_default",
379
True)
982
380
self.approvals_pending = 0
983
self.changedstate = multiprocessing_manager.Condition(
984
multiprocessing_manager.Lock())
985
self.client_structure = [attr
986
for attr in self.__dict__.keys()
987
if not attr.startswith("_")]
988
self.client_structure.append("client_structure")
989
990
for name, t in inspect.getmembers(
991
type(self), lambda obj: isinstance(obj, property)):
992
if not name.startswith("_"):
993
self.client_structure.append(name)
994
995
# Send notice to process children that client state has changed
381
self.approval_delay = string_to_delta(
382
config["approval_delay"])
383
self.approval_duration = string_to_delta(
384
config["approval_duration"])
385
self.changedstate = (multiprocessing_manager
386
.Condition(multiprocessing_manager
387
.Lock()))
388
996
389
def send_changedstate(self):
997
with self.changedstate:
998
self.changedstate.notify_all()
999
390
self.changedstate.acquire()
391
self.changedstate.notify_all()
392
self.changedstate.release()
393
1000
394
def enable(self):
1001
395
"""Start this client's checker and timeout hooks"""
1002
396
if getattr(self, "enabled", False):
1003
397
# Already enabled
1004
398
return
399
self.send_changedstate()
400
# Schedule a new checker to be started an 'interval' from now,
401
# and every interval from then on.
402
self.checker_initiator_tag = (gobject.timeout_add
403
(self.interval_milliseconds(),
404
self.start_checker))
405
# Schedule a disable() when 'timeout' has passed
1005
406
self.expires = datetime.datetime.utcnow() + self.timeout
407
self.disable_initiator_tag = (gobject.timeout_add
408
(self.timeout_milliseconds(),
409
self.disable))
1006
410
self.enabled = True
1007
411
self.last_enabled = datetime.datetime.utcnow()
1008
self.init_checker()
1009
self.send_changedstate()
1010
412
# Also start a new checker *right now*.
413
self.start_checker()
414
1011
415
def disable(self, quiet=True):
1012
416
"""Disable this client."""
1013
417
if not getattr(self, "enabled", False):
1014
418
return False
1015
419
if not quiet:
420
self.send_changedstate()
421
if not quiet:
1016
422
logger.info("Disabling client %s", self.name)
1017
if getattr(self, "disable_initiator_tag", None) is not None:
1018
GLib.source_remove(self.disable_initiator_tag)
423
if getattr(self, "disable_initiator_tag", False):
424
gobject.source_remove(self.disable_initiator_tag)
1019
425
self.disable_initiator_tag = None
1020
426
self.expires = None
1021
if getattr(self, "checker_initiator_tag", None) is not None:
1022
GLib.source_remove(self.checker_initiator_tag)
427
if getattr(self, "checker_initiator_tag", False):
428
gobject.source_remove(self.checker_initiator_tag)
1023
429
self.checker_initiator_tag = None
1024
430
self.stop_checker()
431
if self.disable_hook:
432
self.disable_hook(self)
1025
433
self.enabled = False
1026
if not quiet:
1027
self.send_changedstate()
1028
# Do not run this again if called by a GLib.timeout_add
434
# Do not run this again if called by a gobject.timeout_add
1029
435
return False
1030
436
1031
437
def __del__(self):
438
self.disable_hook = None
1032
439
self.disable()
1033
1034
def init_checker(self):
1035
# Schedule a new checker to be started an 'interval' from now,
1036
# and every interval from then on.
1037
if self.checker_initiator_tag is not None:
1038
GLib.source_remove(self.checker_initiator_tag)
1039
self.checker_initiator_tag = GLib.timeout_add(
1040
int(self.interval.total_seconds() * 1000),
1041
self.start_checker)
1042
# Schedule a disable() when 'timeout' has passed
1043
if self.disable_initiator_tag is not None:
1044
GLib.source_remove(self.disable_initiator_tag)
1045
self.disable_initiator_tag = GLib.timeout_add(
1046
int(self.timeout.total_seconds() * 1000), self.disable)
1047
# Also start a new checker *right now*.
1048
self.start_checker()
1049
1050
def checker_callback(self, source, condition, connection,
1051
command):
440
441
def checker_callback(self, pid, condition, command):
1052
442
"""The checker has completed, so take appropriate actions."""
1053
# Read return code from connection (see call_pipe)
1054
returncode = connection.recv()
1055
connection.close()
1056
self.checker.join()
1057
443
self.checker_callback_tag = None
1058
444
self.checker = None
1059
1060
if returncode >= 0:
1061
self.last_checker_status = returncode
1062
self.last_checker_signal = None
1063
if self.last_checker_status == 0:
445
if os.WIFEXITED(condition):
446
exitstatus = os.WEXITSTATUS(condition)
447
if exitstatus == 0:
1064
448
logger.info("Checker for %(name)s succeeded",
1065
449
vars(self))
1066
450
self.checked_ok()
1067
451
else:
1068
logger.info("Checker for %(name)s failed", vars(self))
452
logger.info("Checker for %(name)s failed",
453
vars(self))
1069
454
else:
1070
self.last_checker_status = -1
1071
self.last_checker_signal = -returncode
1072
455
logger.warning("Checker for %(name)s crashed?",
1073
456
vars(self))
1074
return False
1075
1076
def checked_ok(self):
1077
"""Assert that the client has been seen, alive and well."""
1078
self.last_checked_ok = datetime.datetime.utcnow()
1079
self.last_checker_status = 0
1080
self.last_checker_signal = None
1081
self.bump_timeout()
1082
1083
def bump_timeout(self, timeout=None):
1084
"""Bump up the timeout for this client."""
457
458
def checked_ok(self, timeout=None):
459
"""Bump up the timeout for this client.
460
461
This should only be called when the client has been seen,
462
alive and well.
463
"""
1085
464
if timeout is None:
1086
465
timeout = self.timeout
1087
if self.disable_initiator_tag is not None:
1088
GLib.source_remove(self.disable_initiator_tag)
1089
self.disable_initiator_tag = None
1090
if getattr(self, "enabled", False):
1091
self.disable_initiator_tag = GLib.timeout_add(
1092
int(timeout.total_seconds() * 1000), self.disable)
1093
self.expires = datetime.datetime.utcnow() + timeout
1094
466
self.last_checked_ok = datetime.datetime.utcnow()
467
gobject.source_remove(self.disable_initiator_tag)
468
self.disable_initiator_tag = (gobject.timeout_add
469
(_timedelta_to_milliseconds
470
(timeout), self.disable))
471
self.expires = datetime.datetime.utcnow() + timeout
472
1095
473
def need_approval(self):
1096
474
self.last_approval_request = datetime.datetime.utcnow()
1097
475
1098
476
def start_checker(self):
1099
477
"""Start a new checker subprocess if one is not running.
1100
478
1101
479
If a checker already exists, leave it running and do
1102
480
nothing."""
1103
481
# The reason for not killing a running checker is that if we
1104
# did that, and if a checker (for some reason) started running
1105
# slowly and taking more than 'interval' time, then the client
1106
# would inevitably timeout, since no checker would get a
1107
# chance to run to completion. If we instead leave running
482
# did that, then if a checker (for some reason) started
483
# running slowly and taking more than 'interval' time, the
484
# client would inevitably timeout, since no checker would get
485
# a chance to run to completion. If we instead leave running
1108
486
# checkers alone, the checker would have to take more time
1109
487
# than 'timeout' for the client to be disabled, which is as it
1110
488
# should be.
1111
1112
if self.checker is not None and not self.checker.is_alive():
1113
logger.warning("Checker was not alive; joining")
1114
self.checker.join()
1115
self.checker = None
489
490
# If a checker exists, make sure it is not a zombie
491
try:
492
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
493
except (AttributeError, OSError) as error:
494
if (isinstance(error, OSError)
495
and error.errno != errno.ECHILD):
496
raise error
497
else:
498
if pid:
499
logger.warning("Checker was a zombie")
500
gobject.source_remove(self.checker_callback_tag)
501
self.checker_callback(pid, status,
502
self.current_checker_command)
1116
503
# Start a new checker if needed
1117
504
if self.checker is None:
1118
# Escape attributes for the shell
1119
escaped_attrs = {
1120
attr: re.escape(str(getattr(self, attr)))
1121
for attr in self.runtime_expansions}
1122
505
try:
1123
command = self.checker_command % escaped_attrs
1124
except TypeError as error:
1125
logger.error('Could not format string "%s"',
1126
self.checker_command,
1127
exc_info=error)
1128
return True # Try again later
506
# In case checker_command has exactly one % operator
507
command = self.checker_command % self.host
508
except TypeError:
509
# Escape attributes for the shell
510
escaped_attrs = dict(
511
(attr,
512
re.escape(unicode(str(getattr(self, attr, "")),
513
errors=
514
'replace')))
515
for attr in
516
self.runtime_expansions)
517
518
try:
519
command = self.checker_command % escaped_attrs
520
except TypeError as error:
521
logger.error('Could not format string "%s":'
522
' %s', self.checker_command, error)
523
return True # Try again later
1129
524
self.current_checker_command = command
1130
logger.info("Starting checker %r for %s", command,
1131
self.name)
1132
# We don't need to redirect stdout and stderr, since
1133
# in normal mode, that is already done by daemon(),
1134
# and in debug mode we don't want to. (Stdin is
1135
# always replaced by /dev/null.)
1136
# The exception is when not debugging but nevertheless
1137
# running in the foreground; use the previously
1138
# created wnull.
1139
popen_args = {"close_fds": True,
1140
"shell": True,
1141
"cwd": "/"}
1142
if (not self.server_settings["debug"]
1143
and self.server_settings["foreground"]):
1144
popen_args.update({"stdout": wnull,
1145
"stderr": wnull})
1146
pipe = multiprocessing.Pipe(duplex=False)
1147
self.checker = multiprocessing.Process(
1148
target=call_pipe,
1149
args=(pipe[1], subprocess.call, command),
1150
kwargs=popen_args)
1151
self.checker.start()
1152
self.checker_callback_tag = GLib.io_add_watch(
1153
GLib.IOChannel.unix_new(pipe[0].fileno()),
1154
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1155
self.checker_callback, pipe[0], command)
1156
# Re-run this periodically if run by GLib.timeout_add
525
try:
526
logger.info("Starting checker %r for %s",
527
command, self.name)
528
# We don't need to redirect stdout and stderr, since
529
# in normal mode, that is already done by daemon(),
530
# and in debug mode we don't want to. (Stdin is
531
# always replaced by /dev/null.)
532
self.checker = subprocess.Popen(command,
533
close_fds=True,
534
shell=True, cwd="/")
535
self.checker_callback_tag = (gobject.child_watch_add
536
(self.checker.pid,
537
self.checker_callback,
538
data=command))
539
# The checker may have completed before the gobject
540
# watch was added. Check for this.
541
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
542
if pid:
543
gobject.source_remove(self.checker_callback_tag)
544
self.checker_callback(pid, status, command)
545
except OSError as error:
546
logger.error("Failed to start subprocess: %s",
547
error)
548
# Re-run this periodically if run by gobject.timeout_add
1157
549
return True
1158
550
1159
551
def stop_checker(self):
1160
552
"""Force the checker process, if any, to stop."""
1161
553
if self.checker_callback_tag:
1162
GLib.source_remove(self.checker_callback_tag)
554
gobject.source_remove(self.checker_callback_tag)
1163
555
self.checker_callback_tag = None
1164
556
if getattr(self, "checker", None) is None:
1165
557
return
1166
558
logger.debug("Stopping checker for %(name)s", vars(self))
1167
self.checker.terminate()
559
try:
560
os.kill(self.checker.pid, signal.SIGTERM)
561
#time.sleep(0.5)
562
#if self.checker.poll() is None:
563
# os.kill(self.checker.pid, signal.SIGKILL)
564
except OSError as error:
565
if error.errno != errno.ESRCH: # No such process
566
raise
1168
567
self.checker = None
1169
568
1170
569
1171
def dbus_service_property(dbus_interface,
1172
signature="v",
1173
access="readwrite",
1174
byte_arrays=False):
570
def dbus_service_property(dbus_interface, signature="v",
571
access="readwrite", byte_arrays=False):
1175
572
"""Decorators for marking methods of a DBusObjectWithProperties to
1176
573
become properties on the D-Bus.
1177
574
1178
575
The decorated method will be called with no arguments by "Get"
1179
576
and with one argument by "Set".
1180
577
1181
578
The parameters, where they are supported, are the same as
1182
579
dbus.service.method, except there is only "signature", since the
1183
580
type from Get() and the type sent to Set() is the same.
1186
583
# "Set" method, so we fail early here:
1187
584
if byte_arrays and signature != "ay":
1188
585
raise ValueError("Byte arrays not supported for non-'ay'"
1189
" signature {!r}".format(signature))
1190
586
" signature %r" % signature)
1191
587
def decorator(func):
1192
588
func._dbus_is_property = True
1193
589
func._dbus_interface = dbus_interface
1196
592
func._dbus_name = func.__name__
1197
593
if func._dbus_name.endswith("_dbus_property"):
1198
594
func._dbus_name = func._dbus_name[:-14]
1199
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1200
return func
1201
1202
return decorator
1203
1204
1205
def dbus_interface_annotations(dbus_interface):
1206
"""Decorator for marking functions returning interface annotations
1207
1208
Usage:
1209
1210
@dbus_interface_annotations("org.example.Interface")
1211
def _foo(self): # Function name does not matter
1212
return {"org.freedesktop.DBus.Deprecated": "true",
1213
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1214
"false"}
1215
"""
1216
1217
def decorator(func):
1218
func._dbus_is_interface = True
1219
func._dbus_interface = dbus_interface
1220
func._dbus_name = dbus_interface
1221
return func
1222
1223
return decorator
1224
1225
1226
def dbus_annotations(annotations):
1227
"""Decorator to annotate D-Bus methods, signals or properties
1228
Usage:
1229
1230
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1231
"org.freedesktop.DBus.Property."
1232
"EmitsChangedSignal": "false"})
1233
@dbus_service_property("org.example.Interface", signature="b",
1234
access="r")
1235
def Property_dbus_property(self):
1236
return dbus.Boolean(False)
1237
1238
See also the DBusObjectWithAnnotations class.
1239
"""
1240
1241
def decorator(func):
1242
func._dbus_annotations = annotations
1243
return func
1244
595
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
596
return func
1245
597
return decorator
1246
598
1247
599
1248
600
class DBusPropertyException(dbus.exceptions.DBusException):
1249
601
"""A base class for D-Bus property-related exceptions
1250
602
"""
1251
pass
603
def __unicode__(self):
604
return unicode(str(self))
1252
605
1253
606
1254
607
class DBusPropertyAccessException(DBusPropertyException):
1263
616
pass
1264
617
1265
618
1266
class DBusObjectWithAnnotations(dbus.service.Object):
1267
"""A D-Bus object with annotations.
1268
1269
Classes inheriting from this can use the dbus_annotations
1270
decorator to add annotations to methods or signals.
1271
"""
1272
1273
@staticmethod
1274
def _is_dbus_thing(thing):
1275
"""Returns a function testing if an attribute is a D-Bus thing
1276
1277
If called like _is_dbus_thing("method") it returns a function
1278
suitable for use as predicate to inspect.getmembers().
1279
"""
1280
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1281
False)
1282
1283
def _get_all_dbus_things(self, thing):
1284
"""Returns a generator of (name, attribute) pairs
1285
"""
1286
return ((getattr(athing.__get__(self), "_dbus_name", name),
1287
athing.__get__(self))
1288
for cls in self.__class__.__mro__
1289
for name, athing in
1290
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1291
1292
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1293
out_signature="s",
1294
path_keyword='object_path',
1295
connection_keyword='connection')
1296
def Introspect(self, object_path, connection):
1297
"""Overloading of standard D-Bus method.
1298
1299
Inserts annotation tags on methods and signals.
1300
"""
1301
xmlstring = dbus.service.Object.Introspect(self, object_path,
1302
connection)
1303
try:
1304
document = xml.dom.minidom.parseString(xmlstring)
1305
1306
for if_tag in document.getElementsByTagName("interface"):
1307
# Add annotation tags
1308
for typ in ("method", "signal"):
1309
for tag in if_tag.getElementsByTagName(typ):
1310
annots = dict()
1311
for name, prop in (self.
1312
_get_all_dbus_things(typ)):
1313
if (name == tag.getAttribute("name")
1314
and prop._dbus_interface
1315
== if_tag.getAttribute("name")):
1316
annots.update(getattr(
1317
prop, "_dbus_annotations", {}))
1318
for name, value in annots.items():
1319
ann_tag = document.createElement(
1320
"annotation")
1321
ann_tag.setAttribute("name", name)
1322
ann_tag.setAttribute("value", value)
1323
tag.appendChild(ann_tag)
1324
# Add interface annotation tags
1325
for annotation, value in dict(
1326
itertools.chain.from_iterable(
1327
annotations().items()
1328
for name, annotations
1329
in self._get_all_dbus_things("interface")
1330
if name == if_tag.getAttribute("name")
1331
)).items():
1332
ann_tag = document.createElement("annotation")
1333
ann_tag.setAttribute("name", annotation)
1334
ann_tag.setAttribute("value", value)
1335
if_tag.appendChild(ann_tag)
1336
# Fix argument name for the Introspect method itself
1337
if (if_tag.getAttribute("name")
1338
== dbus.INTROSPECTABLE_IFACE):
1339
for cn in if_tag.getElementsByTagName("method"):
1340
if cn.getAttribute("name") == "Introspect":
1341
for arg in cn.getElementsByTagName("arg"):
1342
if (arg.getAttribute("direction")
1343
== "out"):
1344
arg.setAttribute("name",
1345
"xml_data")
1346
xmlstring = document.toxml("utf-8")
1347
document.unlink()
1348
except (AttributeError, xml.dom.DOMException,
1349
xml.parsers.expat.ExpatError) as error:
1350
logger.error("Failed to override Introspection method",
1351
exc_info=error)
1352
return xmlstring
1353
1354
1355
class DBusObjectWithProperties(DBusObjectWithAnnotations):
619
class DBusObjectWithProperties(dbus.service.Object):
1356
620
"""A D-Bus object with properties.
1357
621
1358
622
Classes inheriting from this can use the dbus_service_property
1359
623
decorator to expose methods as D-Bus properties. It exposes the
1360
624
standard Get(), Set(), and GetAll() methods on the D-Bus.
1361
625
"""
1362
626
627
@staticmethod
628
def _is_dbus_property(obj):
629
return getattr(obj, "_dbus_is_property", False)
630
631
def _get_all_dbus_properties(self):
632
"""Returns a generator of (name, attribute) pairs
633
"""
634
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
635
for cls in self.__class__.__mro__
636
for name, prop in
637
inspect.getmembers(cls, self._is_dbus_property))
638
1363
639
def _get_dbus_property(self, interface_name, property_name):
1364
640
"""Returns a bound method if one exists which is a D-Bus
1365
641
property with the specified name and interface.
1366
642
"""
1367
for cls in self.__class__.__mro__:
1368
for name, value in inspect.getmembers(
1369
cls, self._is_dbus_thing("property")):
643
for cls in self.__class__.__mro__:
644
for name, value in (inspect.getmembers
645
(cls, self._is_dbus_property)):
1370
646
if (value._dbus_name == property_name
1371
647
and value._dbus_interface == interface_name):
1372
648
return value.__get__(self)
1373
649
1374
650
# No such property
1375
raise DBusPropertyNotFound("{}:{}.{}".format(
1376
self.dbus_object_path, interface_name, property_name))
1377
1378
@classmethod
1379
def _get_all_interface_names(cls):
1380
"""Get a sequence of all interfaces supported by an object"""
1381
return (name for name in set(getattr(getattr(x, attr),
1382
"_dbus_interface", None)
1383
for x in (inspect.getmro(cls))
1384
for attr in dir(x))
1385
if name is not None)
1386
1387
@dbus.service.method(dbus.PROPERTIES_IFACE,
1388
in_signature="ss",
651
raise DBusPropertyNotFound(self.dbus_object_path + ":"
652
+ interface_name + "."
653
+ property_name)
654
655
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1389
656
out_signature="v")
1390
657
def Get(self, interface_name, property_name):
1391
658
"""Standard D-Bus property Get() method, see D-Bus standard.
1397
664
if not hasattr(value, "variant_level"):
1398
665
return value
1399
666
return type(value)(value, variant_level=value.variant_level+1)
1400
667
1401
668
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1402
669
def Set(self, interface_name, property_name, value):
1403
670
"""Standard D-Bus property Set() method, see D-Bus standard.
1409
676
# The byte_arrays option is not supported yet on
1410
677
# signatures other than "ay".
1411
678
if prop._dbus_signature != "ay":
1412
raise ValueError("Byte arrays not supported for non-"
1413
"'ay' signature {!r}"
1414
.format(prop._dbus_signature))
1415
value = dbus.ByteArray(b''.join(chr(byte)
1416
for byte in value))
679
raise ValueError
680
value = dbus.ByteArray(''.join(unichr(byte)
681
for byte in value))
1417
682
prop(value)
1418
1419
@dbus.service.method(dbus.PROPERTIES_IFACE,
1420
in_signature="s",
683
684
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1421
685
out_signature="a{sv}")
1422
686
def GetAll(self, interface_name):
1423
687
"""Standard D-Bus property GetAll() method, see D-Bus
1424
688
standard.
1425
689
1426
690
Note: Will not include properties with access="write".
1427
691
"""
1428
properties = {}
1429
for name, prop in self._get_all_dbus_things("property"):
692
all = {}
693
for name, prop in self._get_all_dbus_properties():
1430
694
if (interface_name
1431
695
and interface_name != prop._dbus_interface):
1432
696
# Interface non-empty but did not match
1436
700
continue
1437
701
value = prop()
1438
702
if not hasattr(value, "variant_level"):
1439
properties[name] = value
703
all[name] = value
1440
704
continue
1441
properties[name] = type(value)(
1442
value, variant_level=value.variant_level + 1)
1443
return dbus.Dictionary(properties, signature="sv")
1444
1445
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1446
def PropertiesChanged(self, interface_name, changed_properties,
1447
invalidated_properties):
1448
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1449
standard.
1450
"""
1451
pass
1452
705
all[name] = type(value)(value, variant_level=
706
value.variant_level+1)
707
return dbus.Dictionary(all, signature="sv")
708
1453
709
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1454
710
out_signature="s",
1455
711
path_keyword='object_path',
1456
712
connection_keyword='connection')
1457
713
def Introspect(self, object_path, connection):
1458
"""Overloading of standard D-Bus method.
1459
1460
Inserts property tags and interface annotation tags.
714
"""Standard D-Bus method, overloaded to insert property tags.
1461
715
"""
1462
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1463
object_path,
1464
connection)
716
xmlstring = dbus.service.Object.Introspect(self, object_path,
717
connection)
1465
718
try:
1466
719
document = xml.dom.minidom.parseString(xmlstring)
1467
1468
720
def make_tag(document, name, prop):
1469
721
e = document.createElement("property")
1470
722
e.setAttribute("name", name)
1471
723
e.setAttribute("type", prop._dbus_signature)
1472
724
e.setAttribute("access", prop._dbus_access)
1473
725
return e
1474
1475
726
for if_tag in document.getElementsByTagName("interface"):
1476
# Add property tags
1477
727
for tag in (make_tag(document, name, prop)
1478
728
for name, prop
1479
in self._get_all_dbus_things("property")
729
in self._get_all_dbus_properties()
1480
730
if prop._dbus_interface
1481
731
== if_tag.getAttribute("name")):
1482
732
if_tag.appendChild(tag)
1483
# Add annotation tags for properties
1484
for tag in if_tag.getElementsByTagName("property"):
1485
annots = dict()
1486
for name, prop in self._get_all_dbus_things(
1487
"property"):
1488
if (name == tag.getAttribute("name")
1489
and prop._dbus_interface
1490
== if_tag.getAttribute("name")):
1491
annots.update(getattr(
1492
prop, "_dbus_annotations", {}))
1493
for name, value in annots.items():
1494
ann_tag = document.createElement(
1495
"annotation")
1496
ann_tag.setAttribute("name", name)
1497
ann_tag.setAttribute("value", value)
1498
tag.appendChild(ann_tag)
1499
733
# Add the names to the return values for the
1500
734
# "org.freedesktop.DBus.Properties" methods
1501
735
if (if_tag.getAttribute("name")
1516
750
except (AttributeError, xml.dom.DOMException,
1517
751
xml.parsers.expat.ExpatError) as error:
1518
752
logger.error("Failed to override Introspection method",
1519
exc_info=error)
1520
return xmlstring
1521
1522
1523
try:
1524
dbus.OBJECT_MANAGER_IFACE
1525
except AttributeError:
1526
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1527
1528
1529
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1530
"""A D-Bus object with an ObjectManager.
1531
1532
Classes inheriting from this exposes the standard
1533
GetManagedObjects call and the InterfacesAdded and
1534
InterfacesRemoved signals on the standard
1535
"org.freedesktop.DBus.ObjectManager" interface.
1536
1537
Note: No signals are sent automatically; they must be sent
1538
manually.
1539
"""
1540
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1541
out_signature="a{oa{sa{sv}}}")
1542
def GetManagedObjects(self):
1543
"""This function must be overridden"""
1544
raise NotImplementedError()
1545
1546
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1547
signature="oa{sa{sv}}")
1548
def InterfacesAdded(self, object_path, interfaces_and_properties):
1549
pass
1550
1551
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1552
def InterfacesRemoved(self, object_path, interfaces):
1553
pass
1554
1555
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1556
out_signature="s",
1557
path_keyword='object_path',
1558
connection_keyword='connection')
1559
def Introspect(self, object_path, connection):
1560
"""Overloading of standard D-Bus method.
1561
1562
Override return argument name of GetManagedObjects to be
1563
"objpath_interfaces_and_properties"
1564
"""
1565
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1566
object_path,
1567
connection)
1568
try:
1569
document = xml.dom.minidom.parseString(xmlstring)
1570
1571
for if_tag in document.getElementsByTagName("interface"):
1572
# Fix argument name for the GetManagedObjects method
1573
if (if_tag.getAttribute("name")
1574
== dbus.OBJECT_MANAGER_IFACE):
1575
for cn in if_tag.getElementsByTagName("method"):
1576
if (cn.getAttribute("name")
1577
== "GetManagedObjects"):
1578
for arg in cn.getElementsByTagName("arg"):
1579
if (arg.getAttribute("direction")
1580
== "out"):
1581
arg.setAttribute(
1582
"name",
1583
"objpath_interfaces"
1584
"_and_properties")
1585
xmlstring = document.toxml("utf-8")
1586
document.unlink()
1587
except (AttributeError, xml.dom.DOMException,
1588
xml.parsers.expat.ExpatError) as error:
1589
logger.error("Failed to override Introspection method",
1590
exc_info=error)
1591
return xmlstring
1592
1593
1594
def datetime_to_dbus(dt, variant_level=0):
753
error)
754
return xmlstring
755
756
757
def datetime_to_dbus (dt, variant_level=0):
1595
758
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1596
759
if dt is None:
1597
return dbus.String("", variant_level=variant_level)
1598
return dbus.String(dt.isoformat(), variant_level=variant_level)
1599
1600
1601
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1602
"""A class decorator; applied to a subclass of
1603
dbus.service.Object, it will add alternate D-Bus attributes with
1604
interface names according to the "alt_interface_names" mapping.
1605
Usage:
1606
1607
@alternate_dbus_interfaces({"org.example.Interface":
1608
"net.example.AlternateInterface"})
1609
class SampleDBusObject(dbus.service.Object):
1610
@dbus.service.method("org.example.Interface")
1611
def SampleDBusMethod():
1612
pass
1613
1614
The above "SampleDBusMethod" on "SampleDBusObject" will be
1615
reachable via two interfaces: "org.example.Interface" and
1616
"net.example.AlternateInterface", the latter of which will have
1617
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1618
"true", unless "deprecate" is passed with a False value.
1619
1620
This works for methods and signals, and also for D-Bus properties
1621
(from DBusObjectWithProperties) and interfaces (from the
1622
dbus_interface_annotations decorator).
760
return dbus.String("", variant_level = variant_level)
761
return dbus.String(dt.isoformat(),
762
variant_level=variant_level)
763
764
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
765
.__metaclass__):
766
"""Applied to an empty subclass of a D-Bus object, this metaclass
767
will add additional D-Bus attributes matching a certain pattern.
1623
768
"""
1624
1625
def wrapper(cls):
1626
for orig_interface_name, alt_interface_name in (
1627
alt_interface_names.items()):
1628
attr = {}
1629
interface_names = set()
1630
# Go though all attributes of the class
1631
for attrname, attribute in inspect.getmembers(cls):
769
def __new__(mcs, name, bases, attr):
770
# Go through all the base classes which could have D-Bus
771
# methods, signals, or properties in them
772
for base in (b for b in bases
773
if issubclass(b, dbus.service.Object)):
774
# Go though all attributes of the base class
775
for attrname, attribute in inspect.getmembers(base):
1632
776
# Ignore non-D-Bus attributes, and D-Bus attributes
1633
777
# with the wrong interface name
1634
778
if (not hasattr(attribute, "_dbus_interface")
1635
or not attribute._dbus_interface.startswith(
1636
orig_interface_name)):
779
or not attribute._dbus_interface
780
.startswith("se.recompile.Mandos")):
1637
781
continue
1638
782
# Create an alternate D-Bus interface name based on
1639
783
# the current name
1640
alt_interface = attribute._dbus_interface.replace(
1641
orig_interface_name, alt_interface_name)
1642
interface_names.add(alt_interface)
784
alt_interface = (attribute._dbus_interface
785
.replace("se.recompile.Mandos",
786
"se.bsnet.fukt.Mandos"))
1643
787
# Is this a D-Bus signal?
1644
788
if getattr(attribute, "_dbus_is_signal", False):
1645
# Extract the original non-method undecorated
1646
# function by black magic
1647
if sys.version_info.major == 2:
1648
nonmethod_func = (dict(
789
# Extract the original non-method function by
790
# black magic
791
nonmethod_func = (dict(
1649
792
zip(attribute.func_code.co_freevars,
1650
attribute.__closure__))
1651
["func"].cell_contents)
1652
else:
1653
nonmethod_func = (dict(
1654
zip(attribute.__code__.co_freevars,
1655
attribute.__closure__))
1656
["func"].cell_contents)
793
attribute.__closure__))["func"]
794
.cell_contents)
1657
795
# Create a new, but exactly alike, function
1658
796
# object, and decorate it to be a new D-Bus signal
1659
797
# with the alternate D-Bus interface name
1660
new_function = copy_function(nonmethod_func)
1661
new_function = (dbus.service.signal(
1662
alt_interface,
1663
attribute._dbus_signature)(new_function))
1664
# Copy annotations, if any
1665
try:
1666
new_function._dbus_annotations = dict(
1667
attribute._dbus_annotations)
1668
except AttributeError:
1669
pass
1670
798
new_function = (dbus.service.signal
799
(alt_interface,
800
attribute._dbus_signature)
801
(types.FunctionType(
802
nonmethod_func.func_code,
803
nonmethod_func.func_globals,
804
nonmethod_func.func_name,
805
nonmethod_func.func_defaults,
806
nonmethod_func.func_closure)))
1671
807
# Define a creator of a function to call both the
1672
# original and alternate functions, so both the
1673
# original and alternate signals gets sent when
1674
# the function is called
808
# old and new functions, so both the old and new
809
# signals gets sent when the function is called
1675
810
def fixscope(func1, func2):
1676
811
"""This function is a scope container to pass
1677
812
func1 and func2 to the "call_both" function
1678
813
outside of its arguments"""
1679
1680
@functools.wraps(func2)
1681
814
def call_both(*args, **kwargs):
1682
815
"""This function will emit two D-Bus
1683
816
signals by calling func1 and func2"""
1684
817
func1(*args, **kwargs)
1685
818
func2(*args, **kwargs)
1686
# Make wrapper function look like a D-Bus
1687
# signal
1688
for name, attr in inspect.getmembers(func2):
1689
if name.startswith("_dbus_"):
1690
setattr(call_both, name, attr)
1691
1692
819
return call_both
1693
820
# Create the "call_both" function and add it to
1694
821
# the class
1695
attr[attrname] = fixscope(attribute, new_function)
822
attr[attrname] = fixscope(attribute,
823
new_function)
1696
824
# Is this a D-Bus method?
1697
825
elif getattr(attribute, "_dbus_is_method", False):
1698
826
# Create a new, but exactly alike, function
1699
827
# object. Decorate it to be a new D-Bus method
1700
828
# with the alternate D-Bus interface name. Add it
1701
829
# to the class.
1702
attr[attrname] = (
1703
dbus.service.method(
1704
alt_interface,
1705
attribute._dbus_in_signature,
1706
attribute._dbus_out_signature)
1707
(copy_function(attribute)))
1708
# Copy annotations, if any
1709
try:
1710
attr[attrname]._dbus_annotations = dict(
1711
attribute._dbus_annotations)
1712
except AttributeError:
1713
pass
830
attr[attrname] = (dbus.service.method
831
(alt_interface,
832
attribute._dbus_in_signature,
833
attribute._dbus_out_signature)
834
(types.FunctionType
835
(attribute.func_code,
836
attribute.func_globals,
837
attribute.func_name,
838
attribute.func_defaults,
839
attribute.func_closure)))
1714
840
# Is this a D-Bus property?
1715
841
elif getattr(attribute, "_dbus_is_property", False):
1716
842
# Create a new, but exactly alike, function
1717
843
# object, and decorate it to be a new D-Bus
1718
844
# property with the alternate D-Bus interface
1719
845
# name. Add it to the class.
1720
attr[attrname] = (dbus_service_property(
1721
alt_interface, attribute._dbus_signature,
1722
attribute._dbus_access,
1723
attribute._dbus_get_args_options
1724
["byte_arrays"])
1725
(copy_function(attribute)))
1726
# Copy annotations, if any
1727
try:
1728
attr[attrname]._dbus_annotations = dict(
1729
attribute._dbus_annotations)
1730
except AttributeError:
1731
pass
1732
# Is this a D-Bus interface?
1733
elif getattr(attribute, "_dbus_is_interface", False):
1734
# Create a new, but exactly alike, function
1735
# object. Decorate it to be a new D-Bus interface
1736
# with the alternate D-Bus interface name. Add it
1737
# to the class.
1738
attr[attrname] = (
1739
dbus_interface_annotations(alt_interface)
1740
(copy_function(attribute)))
1741
if deprecate:
1742
# Deprecate all alternate interfaces
1743
iname = "_AlternateDBusNames_interface_annotation{}"
1744
for interface_name in interface_names:
1745
1746
@dbus_interface_annotations(interface_name)
1747
def func(self):
1748
return {"org.freedesktop.DBus.Deprecated":
1749
"true"}
1750
# Find an unused name
1751
for aname in (iname.format(i)
1752
for i in itertools.count()):
1753
if aname not in attr:
1754
attr[aname] = func
1755
break
1756
if interface_names:
1757
# Replace the class with a new subclass of it with
1758
# methods, signals, etc. as created above.
1759
if sys.version_info.major == 2:
1760
cls = type(b"{}Alternate".format(cls.__name__),
1761
(cls, ), attr)
1762
else:
1763
cls = type("{}Alternate".format(cls.__name__),
1764
(cls, ), attr)
1765
return cls
1766
1767
return wrapper
1768
1769
1770
@alternate_dbus_interfaces({"se.recompile.Mandos":
1771
"se.bsnet.fukt.Mandos"})
846
attr[attrname] = (dbus_service_property
847
(alt_interface,
848
attribute._dbus_signature,
849
attribute._dbus_access,
850
attribute
851
._dbus_get_args_options
852
["byte_arrays"])
853
(types.FunctionType
854
(attribute.func_code,
855
attribute.func_globals,
856
attribute.func_name,
857
attribute.func_defaults,
858
attribute.func_closure)))
859
return type.__new__(mcs, name, bases, attr)
860
1772
861
class ClientDBus(Client, DBusObjectWithProperties):
1773
862
"""A Client class using D-Bus
1774
863
1775
864
Attributes:
1776
865
dbus_object_path: dbus.ObjectPath
1777
866
bus: dbus.SystemBus()
1778
867
"""
1779
868
1780
869
runtime_expansions = (Client.runtime_expansions
1781
+ ("dbus_object_path", ))
1782
1783
_interface = "se.recompile.Mandos.Client"
1784
870
+ ("dbus_object_path",))
871
1785
872
# dbus.service.Object doesn't use super(), so we can't either.
1786
1787
def __init__(self, bus=None, *args, **kwargs):
873
874
def __init__(self, bus = None, *args, **kwargs):
875
self._approvals_pending = 0
1788
876
self.bus = bus
1789
877
Client.__init__(self, *args, **kwargs)
1790
878
# Only now, when this client is initialized, can it show up on
1791
879
# the D-Bus
1792
client_object_name = str(self.name).translate(
880
client_object_name = unicode(self.name).translate(
1793
881
{ord("."): ord("_"),
1794
882
ord("-"): ord("_")})
1795
self.dbus_object_path = dbus.ObjectPath(
1796
"/clients/" + client_object_name)
883
self.dbus_object_path = (dbus.ObjectPath
884
("/clients/" + client_object_name))
1797
885
DBusObjectWithProperties.__init__(self, self.bus,
1798
886
self.dbus_object_path)
1799
1800
def notifychangeproperty(transform_func, dbus_name,
1801
type_func=lambda x: x,
1802
variant_level=1,
1803
invalidate_only=False,
1804
_interface=_interface):
887
888
def notifychangeproperty(transform_func,
889
dbus_name, type_func=lambda x: x,
890
variant_level=1):
1805
891
""" Modify a variable so that it's a property which announces
1806
892
its changes to DBus.
1807
893
1808
transform_fun: Function that takes a value and a variant_level
1809
and transforms it to a D-Bus type.
894
transform_fun: Function that takes a value and transforms it
895
to a D-Bus type.
1810
896
dbus_name: D-Bus name of the variable
1811
897
type_func: Function that transform the value before sending it
1812
898
to the D-Bus. Default: no transform
1813
899
variant_level: D-Bus variant level. Default: 1
1814
900
"""
1815
attrname = "_{}".format(dbus_name)
1816
901
attrname = "_{0}".format(dbus_name)
1817
902
def setter(self, value):
1818
903
if hasattr(self, "dbus_object_path"):
1819
904
if (not hasattr(self, attrname) or
1820
905
type_func(getattr(self, attrname, None))
1821
906
!= type_func(value)):
1822
if invalidate_only:
1823
self.PropertiesChanged(
1824
_interface, dbus.Dictionary(),
1825
dbus.Array((dbus_name, )))
1826
else:
1827
dbus_value = transform_func(
1828
type_func(value),
1829
variant_level=variant_level)
1830
self.PropertyChanged(dbus.String(dbus_name),
1831
dbus_value)
1832
self.PropertiesChanged(
1833
_interface,
1834
dbus.Dictionary({dbus.String(dbus_name):
1835
dbus_value}),
1836
dbus.Array())
907
dbus_value = transform_func(type_func(value),
908
variant_level)
909
self.PropertyChanged(dbus.String(dbus_name),
910
dbus_value)
1837
911
setattr(self, attrname, value)
1838
912
1839
913
return property(lambda self: getattr(self, attrname), setter)
1840
914
915
1841
916
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1842
917
approvals_pending = notifychangeproperty(dbus.Boolean,
1843
918
"ApprovalPending",
1844
type_func=bool)
919
type_func = bool)
1845
920
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1846
921
last_enabled = notifychangeproperty(datetime_to_dbus,
1847
922
"LastEnabled")
1848
checker = notifychangeproperty(
1849
dbus.Boolean, "CheckerRunning",
1850
type_func=lambda checker: checker is not None)
923
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
924
type_func = lambda checker:
925
checker is not None)
1851
926
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1852
927
"LastCheckedOK")
1853
last_checker_status = notifychangeproperty(dbus.Int16,
1854
"LastCheckerStatus")
1855
928
last_approval_request = notifychangeproperty(
1856
929
datetime_to_dbus, "LastApprovalRequest")
1857
930
approved_by_default = notifychangeproperty(dbus.Boolean,
1858
931
"ApprovedByDefault")
1859
approval_delay = notifychangeproperty(
1860
dbus.UInt64, "ApprovalDelay",
1861
type_func=lambda td: td.total_seconds() * 1000)
932
approval_delay = notifychangeproperty(dbus.UInt16,
933
"ApprovalDelay",
934
type_func =
935
_timedelta_to_milliseconds)
1862
936
approval_duration = notifychangeproperty(
1863
dbus.UInt64, "ApprovalDuration",
1864
type_func=lambda td: td.total_seconds() * 1000)
937
dbus.UInt16, "ApprovalDuration",
938
type_func = _timedelta_to_milliseconds)
1865
939
host = notifychangeproperty(dbus.String, "Host")
1866
timeout = notifychangeproperty(
1867
dbus.UInt64, "Timeout",
1868
type_func=lambda td: td.total_seconds() * 1000)
940
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
941
type_func =
942
_timedelta_to_milliseconds)
1869
943
extended_timeout = notifychangeproperty(
1870
dbus.UInt64, "ExtendedTimeout",
1871
type_func=lambda td: td.total_seconds() * 1000)
1872
interval = notifychangeproperty(
1873
dbus.UInt64, "Interval",
1874
type_func=lambda td: td.total_seconds() * 1000)
944
dbus.UInt16, "ExtendedTimeout",
945
type_func = _timedelta_to_milliseconds)
946
interval = notifychangeproperty(dbus.UInt16,
947
"Interval",
948
type_func =
949
_timedelta_to_milliseconds)
1875
950
checker_command = notifychangeproperty(dbus.String, "Checker")
1876
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1877
invalidate_only=True)
1878
951
1879
952
del notifychangeproperty
1880
953
1881
954
def __del__(self, *args, **kwargs):
1882
955
try:
1883
956
self.remove_from_connection()
1886
959
if hasattr(DBusObjectWithProperties, "__del__"):
1887
960
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1888
961
Client.__del__(self, *args, **kwargs)
1889
1890
def checker_callback(self, source, condition,
1891
connection, command, *args, **kwargs):
1892
ret = Client.checker_callback(self, source, condition,
1893
connection, command, *args,
1894
**kwargs)
1895
exitstatus = self.last_checker_status
1896
if exitstatus >= 0:
962
963
def checker_callback(self, pid, condition, command,
964
*args, **kwargs):
965
self.checker_callback_tag = None
966
self.checker = None
967
if os.WIFEXITED(condition):
968
exitstatus = os.WEXITSTATUS(condition)
1897
969
# Emit D-Bus signal
1898
970
self.CheckerCompleted(dbus.Int16(exitstatus),
1899
# This is specific to GNU libC
1900
dbus.Int64(exitstatus << 8),
971
dbus.Int64(condition),
1901
972
dbus.String(command))
1902
973
else:
1903
974
# Emit D-Bus signal
1904
975
self.CheckerCompleted(dbus.Int16(-1),
1905
dbus.Int64(
1906
# This is specific to GNU libC
1907
(exitstatus << 8)
1908
| self.last_checker_signal),
976
dbus.Int64(condition),
1909
977
dbus.String(command))
1910
return ret
1911
978
979
return Client.checker_callback(self, pid, condition, command,
980
*args, **kwargs)
981
1912
982
def start_checker(self, *args, **kwargs):
1913
old_checker_pid = getattr(self.checker, "pid", None)
983
old_checker = self.checker
984
if self.checker is not None:
985
old_checker_pid = self.checker.pid
986
else:
987
old_checker_pid = None
1914
988
r = Client.start_checker(self, *args, **kwargs)
1915
989
# Only if new checker process was started
1916
990
if (self.checker is not None
1918
992
# Emit D-Bus signal
1919
993
self.CheckerStarted(self.current_checker_command)
1920
994
return r
1921
995
1922
996
def _reset_approved(self):
1923
self.approved = None
997
self._approved = None
1924
998
return False
1925
999
1926
1000
def approve(self, value=True):
1927
self.approved = value
1928
GLib.timeout_add(int(self.approval_duration.total_seconds()
1929
* 1000), self._reset_approved)
1930
1001
self.send_changedstate()
1931
1932
# D-Bus methods, signals & properties
1933
1934
# Interfaces
1935
1936
# Signals
1937
1002
self._approved = value
1003
gobject.timeout_add(_timedelta_to_milliseconds
1004
(self.approval_duration),
1005
self._reset_approved)
1006
1007
1008
## D-Bus methods, signals & properties
1009
_interface = "se.recompile.Mandos.Client"
1010
1011
## Signals
1012
1938
1013
# CheckerCompleted - signal
1939
1014
@dbus.service.signal(_interface, signature="nxs")
1940
1015
def CheckerCompleted(self, exitcode, waitstatus, command):
1941
1016
"D-Bus signal"
1942
1017
pass
1943
1018
1944
1019
# CheckerStarted - signal
1945
1020
@dbus.service.signal(_interface, signature="s")
1946
1021
def CheckerStarted(self, command):
1947
1022
"D-Bus signal"
1948
1023
pass
1949
1024
1950
1025
# PropertyChanged - signal
1951
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1952
1026
@dbus.service.signal(_interface, signature="sv")
1953
1027
def PropertyChanged(self, property, value):
1954
1028
"D-Bus signal"
1955
1029
pass
1956
1030
1957
1031
# GotSecret - signal
1958
1032
@dbus.service.signal(_interface)
1959
1033
def GotSecret(self):
1962
1036
server to mandos-client
1963
1037
"""
1964
1038
pass
1965
1039
1966
1040
# Rejected - signal
1967
1041
@dbus.service.signal(_interface, signature="s")
1968
1042
def Rejected(self, reason):
1969
1043
"D-Bus signal"
1970
1044
pass
1971
1045
1972
1046
# NeedApproval - signal
1973
1047
@dbus.service.signal(_interface, signature="tb")
1974
1048
def NeedApproval(self, timeout, default):
1975
1049
"D-Bus signal"
1976
1050
return self.need_approval()
1977
1978
# Methods
1979
1051
1052
## Methods
1053
1980
1054
# Approve - method
1981
1055
@dbus.service.method(_interface, in_signature="b")
1982
1056
def Approve(self, value):
1983
1057
self.approve(value)
1984
1058
1985
1059
# CheckedOK - method
1986
1060
@dbus.service.method(_interface)
1987
1061
def CheckedOK(self):
1988
1062
self.checked_ok()
1989
1063
1990
1064
# Enable - method
1991
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1992
1065
@dbus.service.method(_interface)
1993
1066
def Enable(self):
1994
1067
"D-Bus method"
1995
1068
self.enable()
1996
1069
1997
1070
# StartChecker - method
1998
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1999
1071
@dbus.service.method(_interface)
2000
1072
def StartChecker(self):
2001
1073
"D-Bus method"
2002
1074
self.start_checker()
2003
1075
2004
1076
# Disable - method
2005
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2006
1077
@dbus.service.method(_interface)
2007
1078
def Disable(self):
2008
1079
"D-Bus method"
2009
1080
self.disable()
2010
1081
2011
1082
# StopChecker - method
2012
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2013
1083
@dbus.service.method(_interface)
2014
1084
def StopChecker(self):
2015
1085
self.stop_checker()
2016
2017
# Properties
2018
1086
1087
## Properties
1088
2019
1089
# ApprovalPending - property
2020
1090
@dbus_service_property(_interface, signature="b", access="read")
2021
1091
def ApprovalPending_dbus_property(self):
2022
1092
return dbus.Boolean(bool(self.approvals_pending))
2023
1093
2024
1094
# ApprovedByDefault - property
2025
@dbus_service_property(_interface,
2026
signature="b",
1095
@dbus_service_property(_interface, signature="b",
2027
1096
access="readwrite")
2028
1097
def ApprovedByDefault_dbus_property(self, value=None):
2029
1098
if value is None: # get
2030
1099
return dbus.Boolean(self.approved_by_default)
2031
1100
self.approved_by_default = bool(value)
2032
1101
2033
1102
# ApprovalDelay - property
2034
@dbus_service_property(_interface,
2035
signature="t",
1103
@dbus_service_property(_interface, signature="t",
2036
1104
access="readwrite")
2037
1105
def ApprovalDelay_dbus_property(self, value=None):
2038
1106
if value is None: # get
2039
return dbus.UInt64(self.approval_delay.total_seconds()
2040
* 1000)
1107
return dbus.UInt64(self.approval_delay_milliseconds())
2041
1108
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2042
1109
2043
1110
# ApprovalDuration - property
2044
@dbus_service_property(_interface,
2045
signature="t",
1111
@dbus_service_property(_interface, signature="t",
2046
1112
access="readwrite")
2047
1113
def ApprovalDuration_dbus_property(self, value=None):
2048
1114
if value is None: # get
2049
return dbus.UInt64(self.approval_duration.total_seconds()
2050
* 1000)
1115
return dbus.UInt64(_timedelta_to_milliseconds(
1116
self.approval_duration))
2051
1117
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2052
1118
2053
1119
# Name - property
2054
@dbus_annotations(
2055
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2056
1120
@dbus_service_property(_interface, signature="s", access="read")
2057
1121
def Name_dbus_property(self):
2058
1122
return dbus.String(self.name)
2059
2060
# KeyID - property
2061
@dbus_annotations(
2062
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2063
@dbus_service_property(_interface, signature="s", access="read")
2064
def KeyID_dbus_property(self):
2065
return dbus.String(self.key_id)
2066
1123
2067
1124
# Fingerprint - property
2068
@dbus_annotations(
2069
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2070
1125
@dbus_service_property(_interface, signature="s", access="read")
2071
1126
def Fingerprint_dbus_property(self):
2072
1127
return dbus.String(self.fingerprint)
2073
1128
2074
1129
# Host - property
2075
@dbus_service_property(_interface,
2076
signature="s",
1130
@dbus_service_property(_interface, signature="s",
2077
1131
access="readwrite")
2078
1132
def Host_dbus_property(self, value=None):
2079
1133
if value is None: # get
2080
1134
return dbus.String(self.host)
2081
self.host = str(value)
2082
1135
self.host = value
1136
2083
1137
# Created - property
2084
@dbus_annotations(
2085
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2086
1138
@dbus_service_property(_interface, signature="s", access="read")
2087
1139
def Created_dbus_property(self):
2088
return datetime_to_dbus(self.created)
2089
1140
return dbus.String(datetime_to_dbus(self.created))
1141
2090
1142
# LastEnabled - property
2091
1143
@dbus_service_property(_interface, signature="s", access="read")
2092
1144
def LastEnabled_dbus_property(self):
2093
1145
return datetime_to_dbus(self.last_enabled)
2094
1146
2095
1147
# Enabled - property
2096
@dbus_service_property(_interface,
2097
signature="b",
1148
@dbus_service_property(_interface, signature="b",
2098
1149
access="readwrite")
2099
1150
def Enabled_dbus_property(self, value=None):
2100
1151
if value is None: # get
2103
1154
self.enable()
2104
1155
else:
2105
1156
self.disable()
2106
1157
2107
1158
# LastCheckedOK - property
2108
@dbus_service_property(_interface,
2109
signature="s",
1159
@dbus_service_property(_interface, signature="s",
2110
1160
access="readwrite")
2111
1161
def LastCheckedOK_dbus_property(self, value=None):
2112
1162
if value is not None:
2113
1163
self.checked_ok()
2114
1164
return
2115
1165
return datetime_to_dbus(self.last_checked_ok)
2116
2117
# LastCheckerStatus - property
2118
@dbus_service_property(_interface, signature="n", access="read")
2119
def LastCheckerStatus_dbus_property(self):
2120
return dbus.Int16(self.last_checker_status)
2121
1166
2122
1167
# Expires - property
2123
1168
@dbus_service_property(_interface, signature="s", access="read")
2124
1169
def Expires_dbus_property(self):
2125
1170
return datetime_to_dbus(self.expires)
2126
1171
2127
1172
# LastApprovalRequest - property
2128
1173
@dbus_service_property(_interface, signature="s", access="read")
2129
1174
def LastApprovalRequest_dbus_property(self):
2130
1175
return datetime_to_dbus(self.last_approval_request)
2131
1176
2132
1177
# Timeout - property
2133
@dbus_service_property(_interface,
2134
signature="t",
1178
@dbus_service_property(_interface, signature="t",
2135
1179
access="readwrite")
2136
1180
def Timeout_dbus_property(self, value=None):
2137
1181
if value is None: # get
2138
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2139
old_timeout = self.timeout
1182
return dbus.UInt64(self.timeout_milliseconds())
2140
1183
self.timeout = datetime.timedelta(0, 0, 0, value)
2141
# Reschedule disabling
2142
if self.enabled:
2143
now = datetime.datetime.utcnow()
2144
self.expires += self.timeout - old_timeout
2145
if self.expires <= now:
2146
# The timeout has passed
2147
self.disable()
2148
else:
2149
if (getattr(self, "disable_initiator_tag", None)
2150
is None):
2151
return
2152
GLib.source_remove(self.disable_initiator_tag)
2153
self.disable_initiator_tag = GLib.timeout_add(
2154
int((self.expires - now).total_seconds() * 1000),
2155
self.disable)
2156
1184
if getattr(self, "disable_initiator_tag", None) is None:
1185
return
1186
# Reschedule timeout
1187
gobject.source_remove(self.disable_initiator_tag)
1188
self.disable_initiator_tag = None
1189
self.expires = None
1190
time_to_die = (self.
1191
_timedelta_to_milliseconds((self
1192
.last_checked_ok
1193
+ self.timeout)
1194
- datetime.datetime
1195
.utcnow()))
1196
if time_to_die <= 0:
1197
# The timeout has passed
1198
self.disable()
1199
else:
1200
self.expires = (datetime.datetime.utcnow()
1201
+ datetime.timedelta(milliseconds =
1202
time_to_die))
1203
self.disable_initiator_tag = (gobject.timeout_add
1204
(time_to_die, self.disable))
1205
2157
1206
# ExtendedTimeout - property
2158
@dbus_service_property(_interface,
2159
signature="t",
1207
@dbus_service_property(_interface, signature="t",
2160
1208
access="readwrite")
2161
1209
def ExtendedTimeout_dbus_property(self, value=None):
2162
1210
if value is None: # get
2163
return dbus.UInt64(self.extended_timeout.total_seconds()
2164
* 1000)
1211
return dbus.UInt64(self.extended_timeout_milliseconds())
2165
1212
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2166
1213
2167
1214
# Interval - property
2168
@dbus_service_property(_interface,
2169
signature="t",
1215
@dbus_service_property(_interface, signature="t",
2170
1216
access="readwrite")
2171
1217
def Interval_dbus_property(self, value=None):
2172
1218
if value is None: # get
2173
return dbus.UInt64(self.interval.total_seconds() * 1000)
1219
return dbus.UInt64(self.interval_milliseconds())
2174
1220
self.interval = datetime.timedelta(0, 0, 0, value)
2175
1221
if getattr(self, "checker_initiator_tag", None) is None:
2176
1222
return
2177
if self.enabled:
2178
# Reschedule checker run
2179
GLib.source_remove(self.checker_initiator_tag)
2180
self.checker_initiator_tag = GLib.timeout_add(
2181
value, self.start_checker)
2182
self.start_checker() # Start one now, too
2183
1223
# Reschedule checker run
1224
gobject.source_remove(self.checker_initiator_tag)
1225
self.checker_initiator_tag = (gobject.timeout_add
1226
(value, self.start_checker))
1227
self.start_checker() # Start one now, too
1228
2184
1229
# Checker - property
2185
@dbus_service_property(_interface,
2186
signature="s",
1230
@dbus_service_property(_interface, signature="s",
2187
1231
access="readwrite")
2188
1232
def Checker_dbus_property(self, value=None):
2189
1233
if value is None: # get
2190
1234
return dbus.String(self.checker_command)
2191
self.checker_command = str(value)
2192
1235
self.checker_command = value
1236
2193
1237
# CheckerRunning - property
2194
@dbus_service_property(_interface,
2195
signature="b",
1238
@dbus_service_property(_interface, signature="b",
2196
1239
access="readwrite")
2197
1240
def CheckerRunning_dbus_property(self, value=None):
2198
1241
if value is None: # get
2201
1244
self.start_checker()
2202
1245
else:
2203
1246
self.stop_checker()
2204
1247
2205
1248
# ObjectPath - property
2206
@dbus_annotations(
2207
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2208
"org.freedesktop.DBus.Deprecated": "true"})
2209
1249
@dbus_service_property(_interface, signature="o", access="read")
2210
1250
def ObjectPath_dbus_property(self):
2211
return self.dbus_object_path # is already a dbus.ObjectPath
2212
1251
return self.dbus_object_path # is already a dbus.ObjectPath
1252
2213
1253
# Secret = property
2214
@dbus_annotations(
2215
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2216
"invalidates"})
2217
@dbus_service_property(_interface,
2218
signature="ay",
2219
access="write",
2220
byte_arrays=True)
1254
@dbus_service_property(_interface, signature="ay",
1255
access="write", byte_arrays=True)
2221
1256
def Secret_dbus_property(self, value):
2222
self.secret = bytes(value)
2223
1257
self.secret = str(value)
1258
2224
1259
del _interface
2225
1260
2226
1261
2227
class ProxyClient:
2228
def __init__(self, child_pipe, key_id, fpr, address):
1262
class ProxyClient(object):
1263
def __init__(self, child_pipe, fpr, address):
2229
1264
self._pipe = child_pipe
2230
self._pipe.send(('init', key_id, fpr, address))
1265
self._pipe.send(('init', fpr, address))
2231
1266
if not self._pipe.recv():
2232
raise KeyError(key_id or fpr)
2233
1267
raise KeyError()
1268
2234
1269
def __getattribute__(self, name):
2235
if name == '_pipe':
1270
if(name == '_pipe'):
2236
1271
return super(ProxyClient, self).__getattribute__(name)
2237
1272
self._pipe.send(('getattr', name))
2238
1273
data = self._pipe.recv()
2239
1274
if data[0] == 'data':
2240
1275
return data[1]
2241
1276
if data[0] == 'function':
2242
2243
1277
def func(*args, **kwargs):
2244
1278
self._pipe.send(('funcall', name, args, kwargs))
2245
1279
return self._pipe.recv()[1]
2246
2247
1280
return func
2248
1281
2249
1282
def __setattr__(self, name, value):
2250
if name == '_pipe':
1283
if(name == '_pipe'):
2251
1284
return super(ProxyClient, self).__setattr__(name, value)
2252
1285
self._pipe.send(('setattr', name, value))
2253
1286
1287
class ClientDBusTransitional(ClientDBus):
1288
__metaclass__ = AlternateDBusNamesMetaclass
2254
1289
2255
1290
class ClientHandler(socketserver.BaseRequestHandler, object):
2256
1291
"""A class to handle client connections.
2257
1292
2258
1293
Instantiated once for each connection to handle it.
2259
1294
Note: This will run in its own forked process."""
2260
1295
2261
1296
def handle(self):
2262
1297
with contextlib.closing(self.server.child_pipe) as child_pipe:
2263
1298
logger.info("TCP connection from: %s",
2264
str(self.client_address))
1299
unicode(self.client_address))
2265
1300
logger.debug("Pipe FD: %d",
2266
1301
self.server.child_pipe.fileno())
2267
2268
session = gnutls.ClientSession(self.request)
2269
2270
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2271
# "+AES-256-CBC", "+SHA1",
2272
# "+COMP-NULL", "+CTYPE-OPENPGP",
2273
# "+DHE-DSS"))
1302
1303
session = (gnutls.connection
1304
.ClientSession(self.request,
1305
gnutls.connection
1306
.X509Credentials()))
1307
1308
# Note: gnutls.connection.X509Credentials is really a
1309
# generic GnuTLS certificate credentials object so long as
1310
# no X.509 keys are added to it. Therefore, we can use it
1311
# here despite using OpenPGP certificates.
1312
1313
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1314
# "+AES-256-CBC", "+SHA1",
1315
# "+COMP-NULL", "+CTYPE-OPENPGP",
1316
# "+DHE-DSS"))
2274
1317
# Use a fallback default, since this MUST be set.
2275
1318
priority = self.server.gnutls_priority
2276
1319
if priority is None:
2277
1320
priority = "NORMAL"
2278
gnutls.priority_set_direct(session._c_object,
2279
priority.encode("utf-8"),
2280
None)
2281
1321
(gnutls.library.functions
1322
.gnutls_priority_set_direct(session._c_object,
1323
priority, None))
1324
2282
1325
# Start communication using the Mandos protocol
2283
1326
# Get protocol number
2284
1327
line = self.request.makefile().readline()
2285
1328
logger.debug("Protocol version: %r", line)
2286
1329
try:
2287
1330
if int(line.strip().split()[0]) > 1:
2288
raise RuntimeError(line)
1331
raise RuntimeError
2289
1332
except (ValueError, IndexError, RuntimeError) as error:
2290
1333
logger.error("Unknown protocol version: %s", error)
2291
1334
return
2292
1335
2293
1336
# Start GnuTLS connection
2294
1337
try:
2295
1338
session.handshake()
2296
except gnutls.Error as error:
1339
except gnutls.errors.GNUTLSError as error:
2297
1340
logger.warning("Handshake failed: %s", error)
2298
1341
# Do not run session.bye() here: the session is not
2299
1342
# established. Just abandon the request.
2300
1343
return
2301
1344
logger.debug("Handshake succeeded")
2302
1345
2303
1346
approval_required = False
2304
1347
try:
2305
if gnutls.has_rawpk:
2306
fpr = b""
2307
try:
2308
key_id = self.key_id(
2309
self.peer_certificate(session))
2310
except (TypeError, gnutls.Error) as error:
2311
logger.warning("Bad certificate: %s", error)
2312
return
2313
logger.debug("Key ID: %s", key_id)
2314
2315
else:
2316
key_id = b""
2317
try:
2318
fpr = self.fingerprint(
2319
self.peer_certificate(session))
2320
except (TypeError, gnutls.Error) as error:
2321
logger.warning("Bad certificate: %s", error)
2322
return
2323
logger.debug("Fingerprint: %s", fpr)
2324
2325
try:
2326
client = ProxyClient(child_pipe, key_id, fpr,
1348
try:
1349
fpr = self.fingerprint(self.peer_certificate
1350
(session))
1351
except (TypeError,
1352
gnutls.errors.GNUTLSError) as error:
1353
logger.warning("Bad certificate: %s", error)
1354
return
1355
logger.debug("Fingerprint: %s", fpr)
1356
1357
try:
1358
client = ProxyClient(child_pipe, fpr,
2327
1359
self.client_address)
2328
1360
except KeyError:
2329
1361
return
2330
1362
2331
1363
if client.approval_delay:
2332
1364
delay = client.approval_delay
2333
1365
client.approvals_pending += 1
2334
1366
approval_required = True
2335
1367
2336
1368
while True:
2337
1369
if not client.enabled:
2338
1370
logger.info("Client %s is disabled",
2339
client.name)
1371
client.name)
2340
1372
if self.server.use_dbus:
2341
1373
# Emit D-Bus signal
2342
1374
client.Rejected("Disabled")
2343
1375
return
2344
2345
if client.approved or not client.approval_delay:
2346
# We are approved or approval is disabled
1376
1377
if client._approved or not client.approval_delay:
1378
#We are approved or approval is disabled
2347
1379
break
2348
elif client.approved is None:
1380
elif client._approved is None:
2349
1381
logger.info("Client %s needs approval",
2350
1382
client.name)
2351
1383
if self.server.use_dbus:
2352
1384
# Emit D-Bus signal
2353
1385
client.NeedApproval(
2354
client.approval_delay.total_seconds()
2355
* 1000, client.approved_by_default)
1386
client.approval_delay_milliseconds(),
1387
client.approved_by_default)
2356
1388
else:
2357
1389
logger.warning("Client %s was not approved",
2358
1390
client.name)
2360
1392
# Emit D-Bus signal
2361
1393
client.Rejected("Denied")
2362
1394
return
2363
2364
# wait until timeout or approved
1395
1396
#wait until timeout or approved
2365
1397
time = datetime.datetime.now()
2366
1398
client.changedstate.acquire()
2367
client.changedstate.wait(delay.total_seconds())
1399
(client.changedstate.wait
1400
(float(client._timedelta_to_milliseconds(delay)
1401
/ 1000)))
2368
1402
client.changedstate.release()
2369
1403
time2 = datetime.datetime.now()
2370
1404
if (time2 - time) >= delay:
2380
1414
break
2381
1415
else:
2382
1416
delay -= time2 - time
2383
2384
try:
2385
session.send(client.secret)
2386
except gnutls.Error as error:
2387
logger.warning("gnutls send failed",
2388
exc_info=error)
2389
return
2390
1417
1418
sent_size = 0
1419
while sent_size < len(client.secret):
1420
try:
1421
sent = session.send(client.secret[sent_size:])
1422
except gnutls.errors.GNUTLSError as error:
1423
logger.warning("gnutls send failed")
1424
return
1425
logger.debug("Sent: %d, remaining: %d",
1426
sent, len(client.secret)
1427
- (sent_size + sent))
1428
sent_size += sent
1429
2391
1430
logger.info("Sending secret to %s", client.name)
2392
# bump the timeout using extended_timeout
2393
client.bump_timeout(client.extended_timeout)
1431
# bump the timeout as if seen
1432
client.checked_ok(client.extended_timeout)
2394
1433
if self.server.use_dbus:
2395
1434
# Emit D-Bus signal
2396
1435
client.GotSecret()
2397
1436
2398
1437
finally:
2399
1438
if approval_required:
2400
1439
client.approvals_pending -= 1
2401
1440
try:
2402
1441
session.bye()
2403
except gnutls.Error as error:
2404
logger.warning("GnuTLS bye failed",
2405
exc_info=error)
2406
1442
except gnutls.errors.GNUTLSError as error:
1443
logger.warning("GnuTLS bye failed")
1444
2407
1445
@staticmethod
2408
1446
def peer_certificate(session):
2409
"Return the peer's certificate as a bytestring"
2410
try:
2411
cert_type = gnutls.certificate_type_get2(session._c_object,
2412
gnutls.CTYPE_PEERS)
2413
except AttributeError:
2414
cert_type = gnutls.certificate_type_get(session._c_object)
2415
if gnutls.has_rawpk:
2416
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2417
else:
2418
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2419
# If not a valid certificate type...
2420
if cert_type not in valid_cert_types:
2421
logger.info("Cert type %r not in %r", cert_type,
2422
valid_cert_types)
2423
# ...return invalid data
2424
return b""
1447
"Return the peer's OpenPGP certificate as a bytestring"
1448
# If not an OpenPGP certificate...
1449
if (gnutls.library.functions
1450
.gnutls_certificate_type_get(session._c_object)
1451
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1452
# ...do the normal thing
1453
return session.peer_certificate
2425
1454
list_size = ctypes.c_uint(1)
2426
cert_list = (gnutls.certificate_get_peers
1455
cert_list = (gnutls.library.functions
1456
.gnutls_certificate_get_peers
2427
1457
(session._c_object, ctypes.byref(list_size)))
2428
1458
if not bool(cert_list) and list_size.value != 0:
2429
raise gnutls.Error("error getting peer certificate")
1459
raise gnutls.errors.GNUTLSError("error getting peer"
1460
" certificate")
2430
1461
if list_size.value == 0:
2431
1462
return None
2432
1463
cert = cert_list[0]
2433
1464
return ctypes.string_at(cert.data, cert.size)
2434
2435
@staticmethod
2436
def key_id(certificate):
2437
"Convert a certificate bytestring to a hexdigit key ID"
2438
# New GnuTLS "datum" with the public key
2439
datum = gnutls.datum_t(
2440
ctypes.cast(ctypes.c_char_p(certificate),
2441
ctypes.POINTER(ctypes.c_ubyte)),
2442
ctypes.c_uint(len(certificate)))
2443
# XXX all these need to be created in the gnutls "module"
2444
# New empty GnuTLS certificate
2445
pubkey = gnutls.pubkey_t()
2446
gnutls.pubkey_init(ctypes.byref(pubkey))
2447
# Import the raw public key into the certificate
2448
gnutls.pubkey_import(pubkey,
2449
ctypes.byref(datum),
2450
gnutls.X509_FMT_DER)
2451
# New buffer for the key ID
2452
buf = ctypes.create_string_buffer(32)
2453
buf_len = ctypes.c_size_t(len(buf))
2454
# Get the key ID from the raw public key into the buffer
2455
gnutls.pubkey_get_key_id(pubkey,
2456
gnutls.KEYID_USE_SHA256,
2457
ctypes.cast(ctypes.byref(buf),
2458
ctypes.POINTER(ctypes.c_ubyte)),
2459
ctypes.byref(buf_len))
2460
# Deinit the certificate
2461
gnutls.pubkey_deinit(pubkey)
2462
2463
# Convert the buffer to a Python bytestring
2464
key_id = ctypes.string_at(buf, buf_len.value)
2465
# Convert the bytestring to hexadecimal notation
2466
hex_key_id = binascii.hexlify(key_id).upper()
2467
return hex_key_id
2468
1465
2469
1466
@staticmethod
2470
1467
def fingerprint(openpgp):
2471
1468
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2472
1469
# New GnuTLS "datum" with the OpenPGP public key
2473
datum = gnutls.datum_t(
2474
ctypes.cast(ctypes.c_char_p(openpgp),
2475
ctypes.POINTER(ctypes.c_ubyte)),
2476
ctypes.c_uint(len(openpgp)))
1470
datum = (gnutls.library.types
1471
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1472
ctypes.POINTER
1473
(ctypes.c_ubyte)),
1474
ctypes.c_uint(len(openpgp))))
2477
1475
# New empty GnuTLS certificate
2478
crt = gnutls.openpgp_crt_t()
2479
gnutls.openpgp_crt_init(ctypes.byref(crt))
1476
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1477
(gnutls.library.functions
1478
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2480
1479
# Import the OpenPGP public key into the certificate
2481
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2482
gnutls.OPENPGP_FMT_RAW)
1480
(gnutls.library.functions
1481
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1482
gnutls.library.constants
1483
.GNUTLS_OPENPGP_FMT_RAW))
2483
1484
# Verify the self signature in the key
2484
1485
crtverify = ctypes.c_uint()
2485
gnutls.openpgp_crt_verify_self(crt, 0,
2486
ctypes.byref(crtverify))
1486
(gnutls.library.functions
1487
.gnutls_openpgp_crt_verify_self(crt, 0,
1488
ctypes.byref(crtverify)))
2487
1489
if crtverify.value != 0:
2488
gnutls.openpgp_crt_deinit(crt)
2489
raise gnutls.CertificateSecurityError(code
2490
=crtverify.value)
1490
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1491
raise (gnutls.errors.CertificateSecurityError
1492
("Verify failed"))
2491
1493
# New buffer for the fingerprint
2492
1494
buf = ctypes.create_string_buffer(20)
2493
1495
buf_len = ctypes.c_size_t()
2494
1496
# Get the fingerprint from the certificate into the buffer
2495
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2496
ctypes.byref(buf_len))
1497
(gnutls.library.functions
1498
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1499
ctypes.byref(buf_len)))
2497
1500
# Deinit the certificate
2498
gnutls.openpgp_crt_deinit(crt)
1501
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2499
1502
# Convert the buffer to a Python bytestring
2500
1503
fpr = ctypes.string_at(buf, buf_len.value)
2501
1504
# Convert the bytestring to hexadecimal notation
2502
hex_fpr = binascii.hexlify(fpr).upper()
1505
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2503
1506
return hex_fpr
2504
1507
2505
1508
2506
class MultiprocessingMixIn:
1509
class MultiprocessingMixIn(object):
2507
1510
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2508
2509
1511
def sub_process_main(self, request, address):
2510
1512
try:
2511
1513
self.finish_request(request, address)
2512
except Exception:
1514
except:
2513
1515
self.handle_error(request, address)
2514
1516
self.close_request(request)
2515
1517
2516
1518
def process_request(self, request, address):
2517
1519
"""Start a new process to process the request."""
2518
proc = multiprocessing.Process(target=self.sub_process_main,
2519
args=(request, address))
1520
proc = multiprocessing.Process(target = self.sub_process_main,
1521
args = (request,
1522
address))
2520
1523
proc.start()
2521
1524
return proc
2522
1525
2523
1526
2524
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1527
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2525
1528
""" adds a pipe to the MixIn """
2526
2527
1529
def process_request(self, request, client_address):
2528
1530
"""Overrides and wraps the original process_request().
2529
1531
2530
1532
This function creates a new pipe in self.pipe
2531
1533
"""
2532
1534
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2533
1535
2534
1536
proc = MultiprocessingMixIn.process_request(self, request,
2535
1537
client_address)
2536
1538
self.child_pipe.close()
2537
1539
self.add_pipe(parent_pipe, proc)
2538
1540
2539
1541
def add_pipe(self, parent_pipe, proc):
2540
1542
"""Dummy function; override as necessary"""
2541
raise NotImplementedError()
1543
raise NotImplementedError
2542
1544
2543
1545
2544
1546
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2545
socketserver.TCPServer):
1547
socketserver.TCPServer, object):
2546
1548
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2547
1549
2548
1550
Attributes:
2549
1551
enabled: Boolean; whether this server is activated yet
2550
1552
interface: None or a network interface name (string)
2551
1553
use_ipv6: Boolean; to use IPv6 or not
2552
1554
"""
2553
2554
1555
def __init__(self, server_address, RequestHandlerClass,
2555
interface=None,
2556
use_ipv6=True,
2557
socketfd=None):
2558
"""If socketfd is set, use that file descriptor instead of
2559
creating a new one with socket.socket().
2560
"""
1556
interface=None, use_ipv6=True):
2561
1557
self.interface = interface
2562
1558
if use_ipv6:
2563
1559
self.address_family = socket.AF_INET6
2564
if socketfd is not None:
2565
# Save the file descriptor
2566
self.socketfd = socketfd
2567
# Save the original socket.socket() function
2568
self.socket_socket = socket.socket
2569
2570
# To implement --socket, we monkey patch socket.socket.
2571
#
2572
# (When socketserver.TCPServer is a new-style class, we
2573
# could make self.socket into a property instead of monkey
2574
# patching socket.socket.)
2575
#
2576
# Create a one-time-only replacement for socket.socket()
2577
@functools.wraps(socket.socket)
2578
def socket_wrapper(*args, **kwargs):
2579
# Restore original function so subsequent calls are
2580
# not affected.
2581
socket.socket = self.socket_socket
2582
del self.socket_socket
2583
# This time only, return a new socket object from the
2584
# saved file descriptor.
2585
return socket.fromfd(self.socketfd, *args, **kwargs)
2586
# Replace socket.socket() function with wrapper
2587
socket.socket = socket_wrapper
2588
# The socketserver.TCPServer.__init__ will call
2589
# socket.socket(), which might be our replacement,
2590
# socket_wrapper(), if socketfd was set.
2591
1560
socketserver.TCPServer.__init__(self, server_address,
2592
1561
RequestHandlerClass)
2593
2594
1562
def server_bind(self):
2595
1563
"""This overrides the normal server_bind() function
2596
1564
to bind to an interface if one was specified, and also NOT to
2597
1565
bind to an address or port if they were not specified."""
2598
global SO_BINDTODEVICE
2599
1566
if self.interface is not None:
2600
1567
if SO_BINDTODEVICE is None:
2601
# Fall back to a hard-coded value which seems to be
2602
# common enough.
2603
logger.warning("SO_BINDTODEVICE not found, trying 25")
2604
SO_BINDTODEVICE = 25
2605
try:
2606
self.socket.setsockopt(
2607
socket.SOL_SOCKET, SO_BINDTODEVICE,
2608
(self.interface + "\0").encode("utf-8"))
2609
except socket.error as error:
2610
if error.errno == errno.EPERM:
2611
logger.error("No permission to bind to"
2612
" interface %s", self.interface)
2613
elif error.errno == errno.ENOPROTOOPT:
2614
logger.error("SO_BINDTODEVICE not available;"
2615
" cannot bind to interface %s",
2616
self.interface)
2617
elif error.errno == errno.ENODEV:
2618
logger.error("Interface %s does not exist,"
2619
" cannot bind", self.interface)
2620
else:
2621
raise
1568
logger.error("SO_BINDTODEVICE does not exist;"
1569
" cannot bind to interface %s",
1570
self.interface)
1571
else:
1572
try:
1573
self.socket.setsockopt(socket.SOL_SOCKET,
1574
SO_BINDTODEVICE,
1575
str(self.interface
1576
+ '\0'))
1577
except socket.error as error:
1578
if error[0] == errno.EPERM:
1579
logger.error("No permission to"
1580
" bind to interface %s",
1581
self.interface)
1582
elif error[0] == errno.ENOPROTOOPT:
1583
logger.error("SO_BINDTODEVICE not available;"
1584
" cannot bind to interface %s",
1585
self.interface)
1586
else:
1587
raise
2622
1588
# Only bind(2) the socket if we really need to.
2623
1589
if self.server_address[0] or self.server_address[1]:
2624
if self.server_address[1]:
2625
self.allow_reuse_address = True
2626
1590
if not self.server_address[0]:
2627
1591
if self.address_family == socket.AF_INET6:
2628
any_address = "::" # in6addr_any
1592
any_address = "::" # in6addr_any
2629
1593
else:
2630
any_address = "0.0.0.0" # INADDR_ANY
1594
any_address = socket.INADDR_ANY
2631
1595
self.server_address = (any_address,
2632
1596
self.server_address[1])
2633
1597
elif not self.server_address[1]:
2634
self.server_address = (self.server_address[0], 0)
1598
self.server_address = (self.server_address[0],
1599
0)
2635
1600
# if self.interface:
2636
1601
# self.server_address = (self.server_address[0],
2637
1602
# 0, # port
2643
1608
2644
1609
class MandosServer(IPv6_TCPServer):
2645
1610
"""Mandos server.
2646
1611
2647
1612
Attributes:
2648
1613
clients: set of Client objects
2649
1614
gnutls_priority GnuTLS priority string
2650
1615
use_dbus: Boolean; to emit D-Bus signals or not
2651
2652
Assumes a GLib.MainLoop event loop.
1616
1617
Assumes a gobject.MainLoop event loop.
2653
1618
"""
2654
2655
1619
def __init__(self, server_address, RequestHandlerClass,
2656
interface=None,
2657
use_ipv6=True,
2658
clients=None,
2659
gnutls_priority=None,
2660
use_dbus=True,
2661
socketfd=None):
1620
interface=None, use_ipv6=True, clients=None,
1621
gnutls_priority=None, use_dbus=True):
2662
1622
self.enabled = False
2663
1623
self.clients = clients
2664
1624
if self.clients is None:
2665
self.clients = {}
1625
self.clients = set()
2666
1626
self.use_dbus = use_dbus
2667
1627
self.gnutls_priority = gnutls_priority
2668
1628
IPv6_TCPServer.__init__(self, server_address,
2669
1629
RequestHandlerClass,
2670
interface=interface,
2671
use_ipv6=use_ipv6,
2672
socketfd=socketfd)
2673
1630
interface = interface,
1631
use_ipv6 = use_ipv6)
2674
1632
def server_activate(self):
2675
1633
if self.enabled:
2676
1634
return socketserver.TCPServer.server_activate(self)
2677
1635
2678
1636
def enable(self):
2679
1637
self.enabled = True
2680
1638
2681
1639
def add_pipe(self, parent_pipe, proc):
2682
1640
# Call "handle_ipc" for both data and EOF events
2683
GLib.io_add_watch(
2684
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2685
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2686
functools.partial(self.handle_ipc,
2687
parent_pipe=parent_pipe,
2688
proc=proc))
2689
2690
def handle_ipc(self, source, condition,
2691
parent_pipe=None,
2692
proc=None,
2693
client_object=None):
2694
# error, or the other end of multiprocessing.Pipe has closed
2695
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2696
# Wait for other process to exit
1641
gobject.io_add_watch(parent_pipe.fileno(),
1642
gobject.IO_IN | gobject.IO_HUP,
1643
functools.partial(self.handle_ipc,
1644
parent_pipe =
1645
parent_pipe,
1646
proc = proc))
1647
1648
def handle_ipc(self, source, condition, parent_pipe=None,
1649
proc = None, client_object=None):
1650
condition_names = {
1651
gobject.IO_IN: "IN", # There is data to read.
1652
gobject.IO_OUT: "OUT", # Data can be written (without
1653
# blocking).
1654
gobject.IO_PRI: "PRI", # There is urgent data to read.
1655
gobject.IO_ERR: "ERR", # Error condition.
1656
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1657
# broken, usually for pipes and
1658
# sockets).
1659
}
1660
conditions_string = ' | '.join(name
1661
for cond, name in
1662
condition_names.iteritems()
1663
if cond & condition)
1664
# error or the other end of multiprocessing.Pipe has closed
1665
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2697
1666
proc.join()
2698
1667
return False
2699
1668
2700
1669
# Read a request from the child
2701
1670
request = parent_pipe.recv()
2702
1671
command = request[0]
2703
1672
2704
1673
if command == 'init':
2705
key_id = request[1].decode("ascii")
2706
fpr = request[2].decode("ascii")
2707
address = request[3]
2708
2709
for c in self.clients.values():
2710
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2711
continue
2712
if key_id and c.key_id == key_id:
2713
client = c
2714
break
2715
if fpr and c.fingerprint == fpr:
1674
fpr = request[1]
1675
address = request[2]
1676
1677
for c in self.clients:
1678
if c.fingerprint == fpr:
2716
1679
client = c
2717
1680
break
2718
1681
else:
2719
logger.info("Client not found for key ID: %s, address"
2720
": %s", key_id or fpr, address)
1682
logger.info("Client not found for fingerprint: %s, ad"
1683
"dress: %s", fpr, address)
2721
1684
if self.use_dbus:
2722
1685
# Emit D-Bus signal
2723
mandos_dbus_service.ClientNotFound(key_id or fpr,
1686
mandos_dbus_service.ClientNotFound(fpr,
2724
1687
address[0])
2725
1688
parent_pipe.send(False)
2726
1689
return False
2727
2728
GLib.io_add_watch(
2729
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2730
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2731
functools.partial(self.handle_ipc,
2732
parent_pipe=parent_pipe,
2733
proc=proc,
2734
client_object=client))
1690
1691
gobject.io_add_watch(parent_pipe.fileno(),
1692
gobject.IO_IN | gobject.IO_HUP,
1693
functools.partial(self.handle_ipc,
1694
parent_pipe =
1695
parent_pipe,
1696
proc = proc,
1697
client_object =
1698
client))
2735
1699
parent_pipe.send(True)
2736
1700
# remove the old hook in favor of the new above hook on
2737
1701
# same fileno
2740
1704
funcname = request[1]
2741
1705
args = request[2]
2742
1706
kwargs = request[3]
2743
1707
2744
1708
parent_pipe.send(('data', getattr(client_object,
2745
1709
funcname)(*args,
2746
**kwargs)))
2747
1710
**kwargs)))
1711
2748
1712
if command == 'getattr':
2749
1713
attrname = request[1]
2750
if isinstance(client_object.__getattribute__(attrname),
2751
collections.Callable):
2752
parent_pipe.send(('function', ))
1714
if callable(client_object.__getattribute__(attrname)):
1715
parent_pipe.send(('function',))
2753
1716
else:
2754
parent_pipe.send((
2755
'data', client_object.__getattribute__(attrname)))
2756
1717
parent_pipe.send(('data', client_object
1718
.__getattribute__(attrname)))
1719
2757
1720
if command == 'setattr':
2758
1721
attrname = request[1]
2759
1722
value = request[2]
2760
1723
setattr(client_object, attrname, value)
2761
1724
2762
1725
return True
2763
1726
2764
1727
2765
def rfc3339_duration_to_delta(duration):
2766
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2767
2768
>>> rfc3339_duration_to_delta("P7D")
2769
datetime.timedelta(7)
2770
>>> rfc3339_duration_to_delta("PT60S")
2771
datetime.timedelta(0, 60)
2772
>>> rfc3339_duration_to_delta("PT60M")
2773
datetime.timedelta(0, 3600)
2774
>>> rfc3339_duration_to_delta("PT24H")
2775
datetime.timedelta(1)
2776
>>> rfc3339_duration_to_delta("P1W")
2777
datetime.timedelta(7)
2778
>>> rfc3339_duration_to_delta("PT5M30S")
2779
datetime.timedelta(0, 330)
2780
>>> rfc3339_duration_to_delta("P1DT3M20S")
2781
datetime.timedelta(1, 200)
2782
"""
2783
2784
# Parsing an RFC 3339 duration with regular expressions is not
2785
# possible - there would have to be multiple places for the same
2786
# values, like seconds. The current code, while more esoteric, is
2787
# cleaner without depending on a parsing library. If Python had a
2788
# built-in library for parsing we would use it, but we'd like to
2789
# avoid excessive use of external libraries.
2790
2791
# New type for defining tokens, syntax, and semantics all-in-one
2792
Token = collections.namedtuple("Token", (
2793
"regexp", # To match token; if "value" is not None, must have
2794
# a "group" containing digits
2795
"value", # datetime.timedelta or None
2796
"followers")) # Tokens valid after this token
2797
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2798
# the "duration" ABNF definition in RFC 3339, Appendix A.
2799
token_end = Token(re.compile(r"$"), None, frozenset())
2800
token_second = Token(re.compile(r"(\d+)S"),
2801
datetime.timedelta(seconds=1),
2802
frozenset((token_end, )))
2803
token_minute = Token(re.compile(r"(\d+)M"),
2804
datetime.timedelta(minutes=1),
2805
frozenset((token_second, token_end)))
2806
token_hour = Token(re.compile(r"(\d+)H"),
2807
datetime.timedelta(hours=1),
2808
frozenset((token_minute, token_end)))
2809
token_time = Token(re.compile(r"T"),
2810
None,
2811
frozenset((token_hour, token_minute,
2812
token_second)))
2813
token_day = Token(re.compile(r"(\d+)D"),
2814
datetime.timedelta(days=1),
2815
frozenset((token_time, token_end)))
2816
token_month = Token(re.compile(r"(\d+)M"),
2817
datetime.timedelta(weeks=4),
2818
frozenset((token_day, token_end)))
2819
token_year = Token(re.compile(r"(\d+)Y"),
2820
datetime.timedelta(weeks=52),
2821
frozenset((token_month, token_end)))
2822
token_week = Token(re.compile(r"(\d+)W"),
2823
datetime.timedelta(weeks=1),
2824
frozenset((token_end, )))
2825
token_duration = Token(re.compile(r"P"), None,
2826
frozenset((token_year, token_month,
2827
token_day, token_time,
2828
token_week)))
2829
# Define starting values:
2830
# Value so far
2831
value = datetime.timedelta()
2832
found_token = None
2833
# Following valid tokens
2834
followers = frozenset((token_duration, ))
2835
# String left to parse
2836
s = duration
2837
# Loop until end token is found
2838
while found_token is not token_end:
2839
# Search for any currently valid tokens
2840
for token in followers:
2841
match = token.regexp.match(s)
2842
if match is not None:
2843
# Token found
2844
if token.value is not None:
2845
# Value found, parse digits
2846
factor = int(match.group(1), 10)
2847
# Add to value so far
2848
value += factor * token.value
2849
# Strip token from string
2850
s = token.regexp.sub("", s, 1)
2851
# Go to found token
2852
found_token = token
2853
# Set valid next tokens
2854
followers = found_token.followers
2855
break
2856
else:
2857
# No currently valid tokens were found
2858
raise ValueError("Invalid RFC 3339 duration: {!r}"
2859
.format(duration))
2860
# End token found
2861
return value
2862
2863
2864
1728
def string_to_delta(interval):
2865
1729
"""Parse a string and return a datetime.timedelta
2866
1730
2867
1731
>>> string_to_delta('7d')
2868
1732
datetime.timedelta(7)
2869
1733
>>> string_to_delta('60s')
2877
1741
>>> string_to_delta('5m 30s')
2878
1742
datetime.timedelta(0, 330)
2879
1743
"""
2880
2881
try:
2882
return rfc3339_duration_to_delta(interval)
2883
except ValueError:
2884
pass
2885
2886
1744
timevalue = datetime.timedelta(0)
2887
1745
for s in interval.split():
2888
1746
try:
2889
suffix = s[-1]
1747
suffix = unicode(s[-1])
2890
1748
value = int(s[:-1])
2891
1749
if suffix == "d":
2892
1750
delta = datetime.timedelta(value)
2899
1757
elif suffix == "w":
2900
1758
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2901
1759
else:
2902
raise ValueError("Unknown suffix {!r}".format(suffix))
2903
except IndexError as e:
1760
raise ValueError("Unknown suffix %r" % suffix)
1761
except (ValueError, IndexError) as e:
2904
1762
raise ValueError(*(e.args))
2905
1763
timevalue += delta
2906
1764
return timevalue
2907
1765
2908
1766
2909
def daemon(nochdir=False, noclose=False):
1767
def if_nametoindex(interface):
1768
"""Call the C function if_nametoindex(), or equivalent
1769
1770
Note: This function cannot accept a unicode string."""
1771
global if_nametoindex
1772
try:
1773
if_nametoindex = (ctypes.cdll.LoadLibrary
1774
(ctypes.util.find_library("c"))
1775
.if_nametoindex)
1776
except (OSError, AttributeError):
1777
logger.warning("Doing if_nametoindex the hard way")
1778
def if_nametoindex(interface):
1779
"Get an interface index the hard way, i.e. using fcntl()"
1780
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1781
with contextlib.closing(socket.socket()) as s:
1782
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1783
struct.pack(str("16s16x"),
1784
interface))
1785
interface_index = struct.unpack(str("I"),
1786
ifreq[16:20])[0]
1787
return interface_index
1788
return if_nametoindex(interface)
1789
1790
1791
def daemon(nochdir = False, noclose = False):
2910
1792
"""See daemon(3). Standard BSD Unix function.
2911
1793
2912
1794
This should really exist as os.daemon, but it doesn't (yet)."""
2913
1795
if os.fork():
2914
1796
sys.exit()
2919
1801
sys.exit()
2920
1802
if not noclose:
2921
1803
# Close all standard open file descriptors
2922
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1804
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2923
1805
if not stat.S_ISCHR(os.fstat(null).st_mode):
2924
1806
raise OSError(errno.ENODEV,
2925
"{} not a character device"
2926
.format(os.devnull))
1807
"%s not a character device"
1808
% os.path.devnull)
2927
1809
os.dup2(null, sys.stdin.fileno())
2928
1810
os.dup2(null, sys.stdout.fileno())
2929
1811
os.dup2(null, sys.stderr.fileno())
2932
1814
2933
1815
2934
1816
def main():
2935
1817
2936
1818
##################################################################
2937
1819
# Parsing of options, both command line and config file
2938
1820
2939
1821
parser = argparse.ArgumentParser()
2940
1822
parser.add_argument("-v", "--version", action="version",
2941
version="%(prog)s {}".format(version),
1823
version = "%%(prog)s %s" % version,
2942
1824
help="show version number and exit")
2943
1825
parser.add_argument("-i", "--interface", metavar="IF",
2944
1826
help="Bind to interface IF")
2950
1832
help="Run self-test")
2951
1833
parser.add_argument("--debug", action="store_true",
2952
1834
help="Debug mode; run in foreground and log"
2953
" to terminal", default=None)
1835
" to terminal")
2954
1836
parser.add_argument("--debuglevel", metavar="LEVEL",
2955
1837
help="Debug level for stdout output")
2956
1838
parser.add_argument("--priority", help="GnuTLS"
2963
1845
" files")
2964
1846
parser.add_argument("--no-dbus", action="store_false",
2965
1847
dest="use_dbus", help="Do not provide D-Bus"
2966
" system bus interface", default=None)
1848
" system bus interface")
2967
1849
parser.add_argument("--no-ipv6", action="store_false",
2968
dest="use_ipv6", help="Do not use IPv6",
2969
default=None)
2970
parser.add_argument("--no-restore", action="store_false",
2971
dest="restore", help="Do not restore stored"
2972
" state", default=None)
2973
parser.add_argument("--socket", type=int,
2974
help="Specify a file descriptor to a network"
2975
" socket to use instead of creating one")
2976
parser.add_argument("--statedir", metavar="DIR",
2977
help="Directory to save/restore state in")
2978
parser.add_argument("--foreground", action="store_true",
2979
help="Run in foreground", default=None)
2980
parser.add_argument("--no-zeroconf", action="store_false",
2981
dest="zeroconf", help="Do not use Zeroconf",
2982
default=None)
2983
1850
dest="use_ipv6", help="Do not use IPv6")
2984
1851
options = parser.parse_args()
2985
1852
1853
if options.check:
1854
import doctest
1855
doctest.testmod()
1856
sys.exit()
1857
2986
1858
# Default values for config file for server-global settings
2987
if gnutls.has_rawpk:
2988
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2989
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2990
else:
2991
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2992
":+SIGN-DSA-SHA256")
2993
server_defaults = {"interface": "",
2994
"address": "",
2995
"port": "",
2996
"debug": "False",
2997
"priority": priority,
2998
"servicename": "Mandos",
2999
"use_dbus": "True",
3000
"use_ipv6": "True",
3001
"debuglevel": "",
3002
"restore": "True",
3003
"socket": "",
3004
"statedir": "/var/lib/mandos",
3005
"foreground": "False",
3006
"zeroconf": "True",
3007
}
3008
del priority
3009
1859
server_defaults = { "interface": "",
1860
"address": "",
1861
"port": "",
1862
"debug": "False",
1863
"priority":
1864
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1865
"servicename": "Mandos",
1866
"use_dbus": "True",
1867
"use_ipv6": "True",
1868
"debuglevel": "",
1869
}
1870
3010
1871
# Parse config file for server-global settings
3011
server_config = configparser.ConfigParser(server_defaults)
1872
server_config = configparser.SafeConfigParser(server_defaults)
3012
1873
del server_defaults
3013
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3014
# Convert the ConfigParser object to a dict
1874
server_config.read(os.path.join(options.configdir,
1875
"mandos.conf"))
1876
# Convert the SafeConfigParser object to a dict
3015
1877
server_settings = server_config.defaults()
3016
1878
# Use the appropriate methods on the non-string config options
3017
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3018
"foreground", "zeroconf"):
1879
for option in ("debug", "use_dbus", "use_ipv6"):
3019
1880
server_settings[option] = server_config.getboolean("DEFAULT",
3020
1881
option)
3021
1882
if server_settings["port"]:
3022
1883
server_settings["port"] = server_config.getint("DEFAULT",
3023
1884
"port")
3024
if server_settings["socket"]:
3025
server_settings["socket"] = server_config.getint("DEFAULT",
3026
"socket")
3027
# Later, stdin will, and stdout and stderr might, be dup'ed
3028
# over with an opened os.devnull. But we don't want this to
3029
# happen with a supplied network socket.
3030
if 0 <= server_settings["socket"] <= 2:
3031
server_settings["socket"] = os.dup(server_settings
3032
["socket"])
3033
1885
del server_config
3034
1886
3035
1887
# Override the settings from the config file with command line
3036
1888
# options, if set.
3037
1889
for option in ("interface", "address", "port", "debug",
3038
"priority", "servicename", "configdir", "use_dbus",
3039
"use_ipv6", "debuglevel", "restore", "statedir",
3040
"socket", "foreground", "zeroconf"):
1890
"priority", "servicename", "configdir",
1891
"use_dbus", "use_ipv6", "debuglevel"):
3041
1892
value = getattr(options, option)
3042
1893
if value is not None:
3043
1894
server_settings[option] = value
3044
1895
del options
3045
1896
# Force all strings to be unicode
3046
1897
for option in server_settings.keys():
3047
if isinstance(server_settings[option], bytes):
3048
server_settings[option] = (server_settings[option]
3049
.decode("utf-8"))
3050
# Force all boolean options to be boolean
3051
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3052
"foreground", "zeroconf"):
3053
server_settings[option] = bool(server_settings[option])
3054
# Debug implies foreground
3055
if server_settings["debug"]:
3056
server_settings["foreground"] = True
1898
if type(server_settings[option]) is str:
1899
server_settings[option] = unicode(server_settings[option])
3057
1900
# Now we have our good server settings in "server_settings"
3058
1901
3059
1902
##################################################################
3060
3061
if (not server_settings["zeroconf"]
3062
and not (server_settings["port"]
3063
or server_settings["socket"] != "")):
3064
parser.error("Needs port or socket to work without Zeroconf")
3065
1903
3066
1904
# For convenience
3067
1905
debug = server_settings["debug"]
3068
1906
debuglevel = server_settings["debuglevel"]
3069
1907
use_dbus = server_settings["use_dbus"]
3070
1908
use_ipv6 = server_settings["use_ipv6"]
3071
stored_state_path = os.path.join(server_settings["statedir"],
3072
stored_state_file)
3073
foreground = server_settings["foreground"]
3074
zeroconf = server_settings["zeroconf"]
3075
3076
if debug:
3077
initlogger(debug, logging.DEBUG)
3078
else:
3079
if not debuglevel:
3080
initlogger(debug)
3081
else:
3082
level = getattr(logging, debuglevel.upper())
3083
initlogger(debug, level)
3084
1909
3085
1910
if server_settings["servicename"] != "Mandos":
3086
syslogger.setFormatter(
3087
logging.Formatter('Mandos ({}) [%(process)d]:'
3088
' %(levelname)s: %(message)s'.format(
3089
server_settings["servicename"])))
3090
1911
syslogger.setFormatter(logging.Formatter
1912
('Mandos (%s) [%%(process)d]:'
1913
' %%(levelname)s: %%(message)s'
1914
% server_settings["servicename"]))
1915
3091
1916
# Parse config file with clients
3092
client_config = configparser.ConfigParser(Client.client_defaults)
1917
client_defaults = { "timeout": "5m",
1918
"extended_timeout": "15m",
1919
"interval": "2m",
1920
"checker": "fping -q -- %%(host)s",
1921
"host": "",
1922
"approval_delay": "0s",
1923
"approval_duration": "1s",
1924
}
1925
client_config = configparser.SafeConfigParser(client_defaults)
3093
1926
client_config.read(os.path.join(server_settings["configdir"],
3094
1927
"clients.conf"))
3095
1928
3096
1929
global mandos_dbus_service
3097
1930
mandos_dbus_service = None
3098
3099
socketfd = None
3100
if server_settings["socket"] != "":
3101
socketfd = server_settings["socket"]
3102
tcp_server = MandosServer(
3103
(server_settings["address"], server_settings["port"]),
3104
ClientHandler,
3105
interface=(server_settings["interface"] or None),
3106
use_ipv6=use_ipv6,
3107
gnutls_priority=server_settings["priority"],
3108
use_dbus=use_dbus,
3109
socketfd=socketfd)
3110
if not foreground:
3111
pidfilename = "/run/mandos.pid"
3112
if not os.path.isdir("/run/."):
3113
pidfilename = "/var/run/mandos.pid"
3114
pidfile = None
3115
try:
3116
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3117
except IOError as e:
3118
logger.error("Could not open file %r", pidfilename,
3119
exc_info=e)
3120
3121
for name, group in (("_mandos", "_mandos"),
3122
("mandos", "mandos"),
3123
("nobody", "nogroup")):
3124
try:
3125
uid = pwd.getpwnam(name).pw_uid
3126
gid = pwd.getpwnam(group).pw_gid
3127
break
1931
1932
tcp_server = MandosServer((server_settings["address"],
1933
server_settings["port"]),
1934
ClientHandler,
1935
interface=(server_settings["interface"]
1936
or None),
1937
use_ipv6=use_ipv6,
1938
gnutls_priority=
1939
server_settings["priority"],
1940
use_dbus=use_dbus)
1941
if not debug:
1942
pidfilename = "/var/run/mandos.pid"
1943
try:
1944
pidfile = open(pidfilename, "w")
1945
except IOError:
1946
logger.error("Could not open file %r", pidfilename)
1947
1948
try:
1949
uid = pwd.getpwnam("_mandos").pw_uid
1950
gid = pwd.getpwnam("_mandos").pw_gid
1951
except KeyError:
1952
try:
1953
uid = pwd.getpwnam("mandos").pw_uid
1954
gid = pwd.getpwnam("mandos").pw_gid
3128
1955
except KeyError:
3129
continue
3130
else:
3131
uid = 65534
3132
gid = 65534
1956
try:
1957
uid = pwd.getpwnam("nobody").pw_uid
1958
gid = pwd.getpwnam("nobody").pw_gid
1959
except KeyError:
1960
uid = 65534
1961
gid = 65534
3133
1962
try:
3134
1963
os.setgid(gid)
3135
1964
os.setuid(uid)
3136
if debug:
3137
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3138
gid))
3139
1965
except OSError as error:
3140
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3141
.format(uid, gid, os.strerror(error.errno)))
3142
if error.errno != errno.EPERM:
3143
raise
3144
1966
if error[0] != errno.EPERM:
1967
raise error
1968
1969
if not debug and not debuglevel:
1970
syslogger.setLevel(logging.WARNING)
1971
console.setLevel(logging.WARNING)
1972
if debuglevel:
1973
level = getattr(logging, debuglevel.upper())
1974
syslogger.setLevel(level)
1975
console.setLevel(level)
1976
3145
1977
if debug:
3146
1978
# Enable all possible GnuTLS debugging
3147
1979
3148
1980
# "Use a log level over 10 to enable all debugging options."
3149
1981
# - GnuTLS manual
3150
gnutls.global_set_log_level(11)
3151
3152
@gnutls.log_func
1982
gnutls.library.functions.gnutls_global_set_log_level(11)
1983
1984
@gnutls.library.types.gnutls_log_func
3153
1985
def debug_gnutls(level, string):
3154
1986
logger.debug("GnuTLS: %s", string[:-1])
3155
3156
gnutls.global_set_log_function(debug_gnutls)
3157
1987
1988
(gnutls.library.functions
1989
.gnutls_global_set_log_function(debug_gnutls))
1990
3158
1991
# Redirect stdin so all checkers get /dev/null
3159
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1992
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3160
1993
os.dup2(null, sys.stdin.fileno())
3161
1994
if null > 2:
3162
1995
os.close(null)
3163
1996
else:
1997
# No console logging
1998
logger.removeHandler(console)
1999
3164
2000
# Need to fork before connecting to D-Bus
3165
if not foreground:
2001
if not debug:
3166
2002
# Close all input and output, do double fork, etc.
3167
2003
daemon()
3168
3169
if gi.version_info < (3, 10, 2):
3170
# multiprocessing will use threads, so before we use GLib we
3171
# need to inform GLib that threads will be used.
3172
GLib.threads_init()
3173
2004
3174
2005
global main_loop
3175
2006
# From the Avahi example code
3176
DBusGMainLoop(set_as_default=True)
3177
main_loop = GLib.MainLoop()
2007
DBusGMainLoop(set_as_default=True )
2008
main_loop = gobject.MainLoop()
3178
2009
bus = dbus.SystemBus()
3179
2010
# End of Avahi example code
3180
2011
if use_dbus:
3181
2012
try:
3182
2013
bus_name = dbus.service.BusName("se.recompile.Mandos",
3183
bus,
3184
do_not_queue=True)
3185
old_bus_name = dbus.service.BusName(
3186
"se.bsnet.fukt.Mandos", bus,
3187
do_not_queue=True)
3188
except dbus.exceptions.DBusException as e:
3189
logger.error("Disabling D-Bus:", exc_info=e)
2014
bus, do_not_queue=True)
2015
old_bus_name = (dbus.service.BusName
2016
("se.bsnet.fukt.Mandos", bus,
2017
do_not_queue=True))
2018
except dbus.exceptions.NameExistsException as e:
2019
logger.error(unicode(e) + ", disabling D-Bus")
3190
2020
use_dbus = False
3191
2021
server_settings["use_dbus"] = False
3192
2022
tcp_server.use_dbus = False
3193
if zeroconf:
3194
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3195
service = AvahiServiceToSyslog(
3196
name=server_settings["servicename"],
3197
servicetype="_mandos._tcp",
3198
protocol=protocol,
3199
bus=bus)
3200
if server_settings["interface"]:
3201
service.interface = if_nametoindex(
3202
server_settings["interface"].encode("utf-8"))
3203
2023
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2024
service = AvahiService(name = server_settings["servicename"],
2025
servicetype = "_mandos._tcp",
2026
protocol = protocol, bus = bus)
2027
if server_settings["interface"]:
2028
service.interface = (if_nametoindex
2029
(str(server_settings["interface"])))
2030
3204
2031
global multiprocessing_manager
3205
2032
multiprocessing_manager = multiprocessing.Manager()
3206
2033
3207
2034
client_class = Client
3208
2035
if use_dbus:
3209
client_class = functools.partial(ClientDBus, bus=bus)
3210
3211
client_settings = Client.config_parser(client_config)
3212
old_client_settings = {}
3213
clients_data = {}
3214
3215
# This is used to redirect stdout and stderr for checker processes
3216
global wnull
3217
wnull = open(os.devnull, "w") # A writable /dev/null
3218
# Only used if server is running in foreground but not in debug
3219
# mode
3220
if debug or not foreground:
3221
wnull.close()
3222
3223
# Get client data and settings from last running state.
3224
if server_settings["restore"]:
3225
try:
3226
with open(stored_state_path, "rb") as stored_state:
3227
if sys.version_info.major == 2:
3228
clients_data, old_client_settings = pickle.load(
3229
stored_state)
3230
else:
3231
bytes_clients_data, bytes_old_client_settings = (
3232
pickle.load(stored_state, encoding="bytes"))
3233
# Fix bytes to strings
3234
# clients_data
3235
# .keys()
3236
clients_data = {(key.decode("utf-8")
3237
if isinstance(key, bytes)
3238
else key): value
3239
for key, value in
3240
bytes_clients_data.items()}
3241
del bytes_clients_data
3242
for key in clients_data:
3243
value = {(k.decode("utf-8")
3244
if isinstance(k, bytes) else k): v
3245
for k, v in
3246
clients_data[key].items()}
3247
clients_data[key] = value
3248
# .client_structure
3249
value["client_structure"] = [
3250
(s.decode("utf-8")
3251
if isinstance(s, bytes)
3252
else s) for s in
3253
value["client_structure"]]
3254
# .name & .host
3255
for k in ("name", "host"):
3256
if isinstance(value[k], bytes):
3257
value[k] = value[k].decode("utf-8")
3258
if "key_id" not in value:
3259
value["key_id"] = ""
3260
elif "fingerprint" not in value:
3261
value["fingerprint"] = ""
3262
# old_client_settings
3263
# .keys()
3264
old_client_settings = {
3265
(key.decode("utf-8")
3266
if isinstance(key, bytes)
3267
else key): value
3268
for key, value in
3269
bytes_old_client_settings.items()}
3270
del bytes_old_client_settings
3271
# .host
3272
for value in old_client_settings.values():
3273
if isinstance(value["host"], bytes):
3274
value["host"] = (value["host"]
3275
.decode("utf-8"))
3276
os.remove(stored_state_path)
3277
except IOError as e:
3278
if e.errno == errno.ENOENT:
3279
logger.warning("Could not load persistent state:"
3280
" {}".format(os.strerror(e.errno)))
3281
else:
3282
logger.critical("Could not load persistent state:",
3283
exc_info=e)
3284
raise
3285
except EOFError as e:
3286
logger.warning("Could not load persistent state: "
3287
"EOFError:",
3288
exc_info=e)
3289
3290
with PGPEngine() as pgp:
3291
for client_name, client in clients_data.items():
3292
# Skip removed clients
3293
if client_name not in client_settings:
3294
continue
3295
3296
# Decide which value to use after restoring saved state.
3297
# We have three different values: Old config file,
3298
# new config file, and saved state.
3299
# New config value takes precedence if it differs from old
3300
# config value, otherwise use saved state.
3301
for name, value in client_settings[client_name].items():
3302
try:
3303
# For each value in new config, check if it
3304
# differs from the old config value (Except for
3305
# the "secret" attribute)
3306
if (name != "secret"
3307
and (value !=
3308
old_client_settings[client_name][name])):
3309
client[name] = value
3310
except KeyError:
3311
pass
3312
3313
# Clients who has passed its expire date can still be
3314
# enabled if its last checker was successful. A Client
3315
# whose checker succeeded before we stored its state is
3316
# assumed to have successfully run all checkers during
3317
# downtime.
3318
if client["enabled"]:
3319
if datetime.datetime.utcnow() >= client["expires"]:
3320
if not client["last_checked_ok"]:
3321
logger.warning(
3322
"disabling client {} - Client never "
3323
"performed a successful checker".format(
3324
client_name))
3325
client["enabled"] = False
3326
elif client["last_checker_status"] != 0:
3327
logger.warning(
3328
"disabling client {} - Client last"
3329
" checker failed with error code"
3330
" {}".format(
3331
client_name,
3332
client["last_checker_status"]))
3333
client["enabled"] = False
3334
else:
3335
client["expires"] = (
3336
datetime.datetime.utcnow()
3337
+ client["timeout"])
3338
logger.debug("Last checker succeeded,"
3339
" keeping {} enabled".format(
3340
client_name))
2036
client_class = functools.partial(ClientDBusTransitional,
2037
bus = bus)
2038
def client_config_items(config, section):
2039
special_settings = {
2040
"approved_by_default":
2041
lambda: config.getboolean(section,
2042
"approved_by_default"),
2043
}
2044
for name, value in config.items(section):
3341
2045
try:
3342
client["secret"] = pgp.decrypt(
3343
client["encrypted_secret"],
3344
client_settings[client_name]["secret"])
3345
except PGPError:
3346
# If decryption fails, we use secret from new settings
3347
logger.debug("Failed to decrypt {} old secret".format(
3348
client_name))
3349
client["secret"] = (client_settings[client_name]
3350
["secret"])
3351
3352
# Add/remove clients based on new changes made to config
3353
for client_name in (set(old_client_settings)
3354
- set(client_settings)):
3355
del clients_data[client_name]
3356
for client_name in (set(client_settings)
3357
- set(old_client_settings)):
3358
clients_data[client_name] = client_settings[client_name]
3359
3360
# Create all client objects
3361
for client_name, client in clients_data.items():
3362
tcp_server.clients[client_name] = client_class(
3363
name=client_name,
3364
settings=client,
3365
server_settings=server_settings)
3366
2046
yield (name, special_settings[name]())
2047
except KeyError:
2048
yield (name, value)
2049
2050
tcp_server.clients.update(set(
2051
client_class(name = section,
2052
config= dict(client_config_items(
2053
client_config, section)))
2054
for section in client_config.sections()))
3367
2055
if not tcp_server.clients:
3368
2056
logger.warning("No clients defined")
3369
3370
if not foreground:
3371
if pidfile is not None:
3372
pid = os.getpid()
3373
try:
3374
with pidfile:
3375
print(pid, file=pidfile)
3376
except IOError:
3377
logger.error("Could not write to file %r with PID %d",
3378
pidfilename, pid)
3379
del pidfile
2057
2058
if not debug:
2059
try:
2060
with pidfile:
2061
pid = os.getpid()
2062
pidfile.write(str(pid) + "\n".encode("utf-8"))
2063
del pidfile
2064
except IOError:
2065
logger.error("Could not write to file %r with PID %d",
2066
pidfilename, pid)
2067
except NameError:
2068
# "pidfile" was never created
2069
pass
3380
2070
del pidfilename
3381
3382
for termsig in (signal.SIGHUP, signal.SIGTERM):
3383
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3384
lambda: main_loop.quit() and False)
3385
2071
2072
signal.signal(signal.SIGINT, signal.SIG_IGN)
2073
2074
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2075
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2076
3386
2077
if use_dbus:
3387
3388
@alternate_dbus_interfaces(
3389
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3390
class MandosDBusService(DBusObjectWithObjectManager):
2078
class MandosDBusService(dbus.service.Object):
3391
2079
"""A D-Bus proxy object"""
3392
3393
2080
def __init__(self):
3394
2081
dbus.service.Object.__init__(self, bus, "/")
3395
3396
2082
_interface = "se.recompile.Mandos"
3397
2083
3398
2084
@dbus.service.signal(_interface, signature="o")
3399
2085
def ClientAdded(self, objpath):
3400
2086
"D-Bus signal"
3401
2087
pass
3402
2088
3403
2089
@dbus.service.signal(_interface, signature="ss")
3404
def ClientNotFound(self, key_id, address):
2090
def ClientNotFound(self, fingerprint, address):
3405
2091
"D-Bus signal"
3406
2092
pass
3407
3408
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3409
"true"})
2093
3410
2094
@dbus.service.signal(_interface, signature="os")
3411
2095
def ClientRemoved(self, objpath, name):
3412
2096
"D-Bus signal"
3413
2097
pass
3414
3415
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3416
"true"})
2098
3417
2099
@dbus.service.method(_interface, out_signature="ao")
3418
2100
def GetAllClients(self):
3419
2101
"D-Bus method"
3420
return dbus.Array(c.dbus_object_path for c in
3421
tcp_server.clients.values())
3422
3423
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3424
"true"})
2102
return dbus.Array(c.dbus_object_path
2103
for c in tcp_server.clients)
2104
3425
2105
@dbus.service.method(_interface,
3426
2106
out_signature="a{oa{sv}}")
3427
2107
def GetAllClientsWithProperties(self):
3428
2108
"D-Bus method"
3429
2109
return dbus.Dictionary(
3430
{c.dbus_object_path: c.GetAll(
3431
"se.recompile.Mandos.Client")
3432
for c in tcp_server.clients.values()},
2110
((c.dbus_object_path, c.GetAll(""))
2111
for c in tcp_server.clients),
3433
2112
signature="oa{sv}")
3434
2113
3435
2114
@dbus.service.method(_interface, in_signature="o")
3436
2115
def RemoveClient(self, object_path):
3437
2116
"D-Bus method"
3438
for c in tcp_server.clients.values():
2117
for c in tcp_server.clients:
3439
2118
if c.dbus_object_path == object_path:
3440
del tcp_server.clients[c.name]
2119
tcp_server.clients.remove(c)
3441
2120
c.remove_from_connection()
3442
# Don't signal the disabling
2121
# Don't signal anything except ClientRemoved
3443
2122
c.disable(quiet=True)
3444
# Emit D-Bus signal for removal
3445
self.client_removed_signal(c)
2123
# Emit D-Bus signal
2124
self.ClientRemoved(object_path, c.name)
3446
2125
return
3447
2126
raise KeyError(object_path)
3448
2127
3449
2128
del _interface
3450
3451
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3452
out_signature="a{oa{sa{sv}}}")
3453
def GetManagedObjects(self):
3454
"""D-Bus method"""
3455
return dbus.Dictionary(
3456
{client.dbus_object_path:
3457
dbus.Dictionary(
3458
{interface: client.GetAll(interface)
3459
for interface in
3460
client._get_all_interface_names()})
3461
for client in tcp_server.clients.values()})
3462
3463
def client_added_signal(self, client):
3464
"""Send the new standard signal and the old signal"""
3465
if use_dbus:
3466
# New standard signal
3467
self.InterfacesAdded(
3468
client.dbus_object_path,
3469
dbus.Dictionary(
3470
{interface: client.GetAll(interface)
3471
for interface in
3472
client._get_all_interface_names()}))
3473
# Old signal
3474
self.ClientAdded(client.dbus_object_path)
3475
3476
def client_removed_signal(self, client):
3477
"""Send the new standard signal and the old signal"""
3478
if use_dbus:
3479
# New standard signal
3480
self.InterfacesRemoved(
3481
client.dbus_object_path,
3482
client._get_all_interface_names())
3483
# Old signal
3484
self.ClientRemoved(client.dbus_object_path,
3485
client.name)
3486
3487
mandos_dbus_service = MandosDBusService()
3488
3489
# Save modules to variables to exempt the modules from being
3490
# unloaded before the function registered with atexit() is run.
3491
mp = multiprocessing
3492
wn = wnull
3493
2129
2130
class MandosDBusServiceTransitional(MandosDBusService):
2131
__metaclass__ = AlternateDBusNamesMetaclass
2132
mandos_dbus_service = MandosDBusServiceTransitional()
2133
3494
2134
def cleanup():
3495
2135
"Cleanup function; run on exit"
3496
if zeroconf:
3497
service.cleanup()
3498
3499
mp.active_children()
3500
wn.close()
3501
if not (tcp_server.clients or client_settings):
3502
return
3503
3504
# Store client before exiting. Secrets are encrypted with key
3505
# based on what config file has. If config file is
3506
# removed/edited, old secret will thus be unrecovable.
3507
clients = {}
3508
with PGPEngine() as pgp:
3509
for client in tcp_server.clients.values():
3510
key = client_settings[client.name]["secret"]
3511
client.encrypted_secret = pgp.encrypt(client.secret,
3512
key)
3513
client_dict = {}
3514
3515
# A list of attributes that can not be pickled
3516
# + secret.
3517
exclude = {"bus", "changedstate", "secret",
3518
"checker", "server_settings"}
3519
for name, typ in inspect.getmembers(dbus.service
3520
.Object):
3521
exclude.add(name)
3522
3523
client_dict["encrypted_secret"] = (client
3524
.encrypted_secret)
3525
for attr in client.client_structure:
3526
if attr not in exclude:
3527
client_dict[attr] = getattr(client, attr)
3528
3529
clients[client.name] = client_dict
3530
del client_settings[client.name]["secret"]
3531
3532
try:
3533
with tempfile.NamedTemporaryFile(
3534
mode='wb',
3535
suffix=".pickle",
3536
prefix='clients-',
3537
dir=os.path.dirname(stored_state_path),
3538
delete=False) as stored_state:
3539
pickle.dump((clients, client_settings), stored_state,
3540
protocol=2)
3541
tempname = stored_state.name
3542
os.rename(tempname, stored_state_path)
3543
except (IOError, OSError) as e:
3544
if not debug:
3545
try:
3546
os.remove(tempname)
3547
except NameError:
3548
pass
3549
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3550
logger.warning("Could not save persistent state: {}"
3551
.format(os.strerror(e.errno)))
3552
else:
3553
logger.warning("Could not save persistent state:",
3554
exc_info=e)
3555
raise
3556
3557
# Delete all clients, and settings from config
2136
service.cleanup()
2137
2138
multiprocessing.active_children()
3558
2139
while tcp_server.clients:
3559
name, client = tcp_server.clients.popitem()
2140
client = tcp_server.clients.pop()
3560
2141
if use_dbus:
3561
2142
client.remove_from_connection()
3562
# Don't signal the disabling
2143
client.disable_hook = None
2144
# Don't signal anything except ClientRemoved
3563
2145
client.disable(quiet=True)
3564
# Emit D-Bus signal for removal
3565
2146
if use_dbus:
3566
mandos_dbus_service.client_removed_signal(client)
3567
client_settings.clear()
3568
2147
# Emit D-Bus signal
2148
mandos_dbus_service.ClientRemoved(client
2149
.dbus_object_path,
2150
client.name)
2151
3569
2152
atexit.register(cleanup)
3570
3571
for client in tcp_server.clients.values():
2153
2154
for client in tcp_server.clients:
3572
2155
if use_dbus:
3573
# Emit D-Bus signal for adding
3574
mandos_dbus_service.client_added_signal(client)
3575
# Need to initiate checking of clients
3576
if client.enabled:
3577
client.init_checker()
3578
2156
# Emit D-Bus signal
2157
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2158
client.enable()
2159
3579
2160
tcp_server.enable()
3580
2161
tcp_server.server_activate()
3581
2162
3582
2163
# Find out what port we got
3583
if zeroconf:
3584
service.port = tcp_server.socket.getsockname()[1]
2164
service.port = tcp_server.socket.getsockname()[1]
3585
2165
if use_ipv6:
3586
2166
logger.info("Now listening on address %r, port %d,"
3587
" flowinfo %d, scope_id %d",
3588
*tcp_server.socket.getsockname())
2167
" flowinfo %d, scope_id %d"
2168
% tcp_server.socket.getsockname())
3589
2169
else: # IPv4
3590
logger.info("Now listening on address %r, port %d",
3591
*tcp_server.socket.getsockname())
3592
3593
# service.interface = tcp_server.socket.getsockname()[3]
3594
2170
logger.info("Now listening on address %r, port %d"
2171
% tcp_server.socket.getsockname())
2172
2173
#service.interface = tcp_server.socket.getsockname()[3]
2174
3595
2175
try:
3596
if zeroconf:
3597
# From the Avahi example code
3598
try:
3599
service.activate()
3600
except dbus.exceptions.DBusException as error:
3601
logger.critical("D-Bus Exception", exc_info=error)
3602
cleanup()
3603
sys.exit(1)
3604
# End of Avahi example code
3605
3606
GLib.io_add_watch(
3607
GLib.IOChannel.unix_new(tcp_server.fileno()),
3608
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3609
lambda *args, **kwargs: (tcp_server.handle_request
3610
(*args[2:], **kwargs) or True))
3611
2176
# From the Avahi example code
2177
try:
2178
service.activate()
2179
except dbus.exceptions.DBusException as error:
2180
logger.critical("DBusException: %s", error)
2181
cleanup()
2182
sys.exit(1)
2183
# End of Avahi example code
2184
2185
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2186
lambda *args, **kwargs:
2187
(tcp_server.handle_request
2188
(*args[2:], **kwargs) or True))
2189
3612
2190
logger.debug("Starting main loop")
3613
2191
main_loop.run()
3614
2192
except AvahiError as error:
3615
logger.critical("Avahi Error", exc_info=error)
2193
logger.critical("AvahiError: %s", error)
3616
2194
cleanup()
3617
2195
sys.exit(1)
3618
2196
except KeyboardInterrupt:
3623
2201
# Must run before the D-Bus bus name gets deregistered
3624
2202
cleanup()
3625
2203
3626
3627
def should_only_run_tests():
3628
parser = argparse.ArgumentParser(add_help=False)
3629
parser.add_argument("--check", action='store_true')
3630
args, unknown_args = parser.parse_known_args()
3631
run_tests = args.check
3632
if run_tests:
3633
# Remove --check argument from sys.argv
3634
sys.argv[1:] = unknown_args
3635
return run_tests
3636
3637
# Add all tests from doctest strings
3638
def load_tests(loader, tests, none):
3639
import doctest
3640
tests.addTests(doctest.DocTestSuite())
3641
return tests
3642
2204
3643
2205
if __name__ == '__main__':
3644
try:
3645
if should_only_run_tests():
3646
# Call using ./mandos --check [--verbose]
3647
unittest.main()
3648
else:
3649
main()
3650
finally:
3651
logging.shutdown()
2206
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0