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- Committer: Teddy Hogeborn
- Date: 2011-07-15 01:07:51 UTC
- Revision ID: teddy@fukt.bsnet.se-20110715010751-bh9rhcm6hv8f174e
* initramfs-tools-script: Bug fix: Add missing "--options" argument to
getopt.
getopt.
- 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
#
32
# Contact the authors at <mandos@recompile.se>.
33
#
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
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
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
80
import unittest
81
65
82
66
import dbus
83
67
import dbus.service
84
import gi
85
from gi.repository import GLib
68
import gobject
69
import avahi
86
70
from dbus.mainloop.glib import DBusGMainLoop
87
71
import ctypes
88
72
import ctypes.util
89
73
import xml.dom.minidom
90
74
import inspect
91
75
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
76
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
77
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
105
78
except AttributeError:
106
79
try:
107
# This is where SO_BINDTODEVICE was up to and including Python
108
# 2.6, and also 3.2:
109
80
from IN import SO_BINDTODEVICE
110
81
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
82
SO_BINDTODEVICE = None
83
84
85
version = "1.3.0"
86
87
#logger = logging.getLogger('mandos')
88
logger = logging.Logger('mandos')
89
syslogger = (logging.handlers.SysLogHandler
90
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
91
address = str("/dev/log")))
92
syslogger.setFormatter(logging.Formatter
93
('Mandos [%(process)d]: %(levelname)s:'
94
' %(message)s'))
95
logger.addHandler(syslogger)
96
97
console = logging.StreamHandler()
98
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
99
' %(levelname)s:'
100
' %(message)s'))
101
logger.addHandler(console)
316
102
317
103
class AvahiError(Exception):
318
104
def __init__(self, value, *args, **kwargs):
319
105
self.value = value
320
return super(AvahiError, self).__init__(value, *args,
321
**kwargs)
322
106
super(AvahiError, self).__init__(value, *args, **kwargs)
107
def __unicode__(self):
108
return unicode(repr(self.value))
323
109
324
110
class AvahiServiceError(AvahiError):
325
111
pass
326
112
327
328
113
class AvahiGroupError(AvahiError):
329
114
pass
330
115
331
116
332
class AvahiService:
117
class AvahiService(object):
333
118
"""An Avahi (Zeroconf) service.
334
119
335
120
Attributes:
336
121
interface: integer; avahi.IF_UNSPEC or an interface index.
337
122
Used to optionally bind to the specified interface.
338
123
name: string; Example: 'Mandos'
339
124
type: string; Example: '_mandos._tcp'.
340
See <https://www.iana.org/assignments/service-names-port-numbers>
125
See <http://www.dns-sd.org/ServiceTypes.html>
341
126
port: integer; what port to announce
342
127
TXT: list of strings; TXT record for the service
343
128
domain: string; Domain to publish on, default to .local if empty.
349
134
server: D-Bus Server
350
135
bus: dbus.SystemBus()
351
136
"""
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):
137
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
138
servicetype = None, port = None, TXT = None,
139
domain = "", host = "", max_renames = 32768,
140
protocol = avahi.PROTO_UNSPEC, bus = None):
364
141
self.interface = interface
365
142
self.name = name
366
143
self.type = servicetype
375
152
self.server = None
376
153
self.bus = bus
377
154
self.entry_group_state_changed_match = None
378
379
def rename(self, remove=True):
155
def rename(self):
380
156
"""Derived from the Avahi example code"""
381
157
if self.rename_count >= self.max_renames:
382
158
logger.critical("No suitable Zeroconf service name found"
383
159
" after %i retries, exiting.",
384
160
self.rename_count)
385
161
raise AvahiServiceError("Too many renames")
386
self.name = str(
387
self.server.GetAlternativeServiceName(self.name))
388
self.rename_count += 1
162
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
389
163
logger.info("Changing Zeroconf service name to %r ...",
390
164
self.name)
391
if remove:
392
self.remove()
165
syslogger.setFormatter(logging.Formatter
166
('Mandos (%s) [%%(process)d]:'
167
' %%(levelname)s: %%(message)s'
168
% self.name))
169
self.remove()
393
170
try:
394
171
self.add()
395
172
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
173
logger.critical("DBusException: %s", error)
174
self.cleanup()
175
os._exit(1)
176
self.rename_count += 1
405
177
def remove(self):
406
178
"""Derived from the Avahi example code"""
407
179
if self.entry_group_state_changed_match is not None:
409
181
self.entry_group_state_changed_match = None
410
182
if self.group is not None:
411
183
self.group.Reset()
412
413
184
def add(self):
414
185
"""Derived from the Avahi example code"""
415
186
self.remove()
420
191
avahi.DBUS_INTERFACE_ENTRY_GROUP)
421
192
self.entry_group_state_changed_match = (
422
193
self.group.connect_to_signal(
423
'StateChanged', self.entry_group_state_changed))
194
'StateChanged', self .entry_group_state_changed))
424
195
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
425
196
self.name, self.type)
426
197
self.group.AddService(
432
203
dbus.UInt16(self.port),
433
204
avahi.string_array_to_txt_array(self.TXT))
434
205
self.group.Commit()
435
436
206
def entry_group_state_changed(self, state, error):
437
207
"""Derived from the Avahi example code"""
438
208
logger.debug("Avahi entry group state change: %i", state)
439
209
440
210
if state == avahi.ENTRY_GROUP_ESTABLISHED:
441
211
logger.debug("Zeroconf service established.")
442
212
elif state == avahi.ENTRY_GROUP_COLLISION:
444
214
self.rename()
445
215
elif state == avahi.ENTRY_GROUP_FAILURE:
446
216
logger.critical("Avahi: Error in group state changed %s",
447
str(error))
448
raise AvahiGroupError("State changed: {!s}".format(error))
449
217
unicode(error))
218
raise AvahiGroupError("State changed: %s"
219
% unicode(error))
450
220
def cleanup(self):
451
221
"""Derived from the Avahi example code"""
452
222
if self.group is not None:
453
223
try:
454
224
self.group.Free()
455
225
except (dbus.exceptions.UnknownMethodException,
456
dbus.exceptions.DBusException):
226
dbus.exceptions.DBusException) as e:
457
227
pass
458
228
self.group = None
459
229
self.remove()
460
461
230
def server_state_changed(self, state, error=None):
462
231
"""Derived from the Avahi example code"""
463
232
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
}
233
bad_states = { avahi.SERVER_INVALID:
234
"Zeroconf server invalid",
235
avahi.SERVER_REGISTERING: None,
236
avahi.SERVER_COLLISION:
237
"Zeroconf server name collision",
238
avahi.SERVER_FAILURE:
239
"Zeroconf server failure" }
470
240
if state in bad_states:
471
241
if bad_states[state] is not None:
472
242
if error is None:
475
245
logger.error(bad_states[state] + ": %r", error)
476
246
self.cleanup()
477
247
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)
248
self.add()
490
249
else:
491
250
if error is None:
492
251
logger.debug("Unknown state: %r", state)
493
252
else:
494
253
logger.debug("Unknown state: %r: %r", state, error)
495
496
254
def activate(self):
497
255
"""Derived from the Avahi example code"""
498
256
if self.server is None:
502
260
follow_name_owner_changes=True),
503
261
avahi.DBUS_INTERFACE_SERVER)
504
262
self.server.connect_to_signal("StateChanged",
505
self.server_state_changed)
263
self.server_state_changed)
506
264
self.server_state_changed(self.server.GetState())
507
265
508
266
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:
267
class Client(object):
832
268
"""A representation of a client host served by this server.
833
269
834
270
Attributes:
835
approved: bool(); 'None' if not yet approved/disapproved
271
_approved: bool(); 'None' if not yet approved/disapproved
836
272
approval_delay: datetime.timedelta(); Time to wait for approval
837
273
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
274
checker: subprocess.Popen(); a running checker process used
275
to see if the client lives.
276
'None' if no process is running.
277
checker_callback_tag: a gobject event source tag, or None
842
278
checker_command: string; External command which is run to check
843
279
if client lives. %() expansions are done at
844
280
runtime with vars(self) as dict, so that for
845
281
instance %(name)s can be used in the command.
846
checker_initiator_tag: a GLib event source tag, or None
282
checker_initiator_tag: a gobject event source tag, or None
847
283
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
284
current_checker_command: string; current running checker_command
851
disable_initiator_tag: a GLib event source tag, or None
285
disable_hook: If set, called by disable() as disable_hook(self)
286
disable_initiator_tag: a gobject event source tag, or None
852
287
enabled: bool()
853
288
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
289
uniquely identify the client
857
290
host: string; available for use by the checker command
858
291
interval: datetime.timedelta(); How often to start a new checker
859
292
last_approval_request: datetime.datetime(); (UTC) or None
860
293
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
294
last_enabled: datetime.datetime(); (UTC)
867
295
name: string; from the config file, used in log messages and
868
296
D-Bus identifiers
869
297
secret: bytestring; sent verbatim (over TLS) to client
870
298
timeout: datetime.timedelta(); How long from last_checked_ok
871
299
until this client is disabled
872
extended_timeout: extra long timeout when secret has been sent
873
300
runtime_expansions: Allowed attributes for runtime expansion.
874
expires: datetime.datetime(); time (UTC) when a client will be
875
disabled, or None
876
server_settings: The server_settings dict from main()
877
301
"""
878
302
879
303
runtime_expansions = ("approval_delay", "approval_duration",
880
"created", "enabled", "expires", "key_id",
881
"fingerprint", "host", "interval",
882
"last_approval_request", "last_checked_ok",
304
"created", "enabled", "fingerprint",
305
"host", "interval", "last_checked_ok",
883
306
"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
307
896
308
@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):
309
def _timedelta_to_milliseconds(td):
310
"Convert a datetime.timedelta() to milliseconds"
311
return ((td.days * 24 * 60 * 60 * 1000)
312
+ (td.seconds * 1000)
313
+ (td.microseconds // 1000))
314
315
def timeout_milliseconds(self):
316
"Return the 'timeout' attribute in milliseconds"
317
return self._timedelta_to_milliseconds(self.timeout)
318
319
def interval_milliseconds(self):
320
"Return the 'interval' attribute in milliseconds"
321
return self._timedelta_to_milliseconds(self.interval)
322
323
def approval_delay_milliseconds(self):
324
return self._timedelta_to_milliseconds(self.approval_delay)
325
326
def __init__(self, name = None, disable_hook=None, config=None):
327
"""Note: the 'checker' key in 'config' sets the
328
'checker_command' attribute and *not* the 'checker'
329
attribute."""
951
330
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
331
if config is None:
332
config = {}
969
333
logger.debug("Creating client %r", self.name)
970
logger.debug(" Key ID: %s", self.key_id)
334
# Uppercase and remove spaces from fingerprint for later
335
# comparison purposes with return value from the fingerprint()
336
# function
337
self.fingerprint = (config["fingerprint"].upper()
338
.replace(" ", ""))
971
339
logger.debug(" Fingerprint: %s", self.fingerprint)
972
self.created = settings.get("created",
973
datetime.datetime.utcnow())
974
975
# attributes specific for this server instance
340
if "secret" in config:
341
self.secret = config["secret"].decode("base64")
342
elif "secfile" in config:
343
with open(os.path.expanduser(os.path.expandvars
344
(config["secfile"])),
345
"rb") as secfile:
346
self.secret = secfile.read()
347
else:
348
raise TypeError("No secret or secfile for client %s"
349
% self.name)
350
self.host = config.get("host", "")
351
self.created = datetime.datetime.utcnow()
352
self.enabled = False
353
self.last_approval_request = None
354
self.last_enabled = None
355
self.last_checked_ok = None
356
self.timeout = string_to_delta(config["timeout"])
357
self.interval = string_to_delta(config["interval"])
358
self.disable_hook = disable_hook
976
359
self.checker = None
977
360
self.checker_initiator_tag = None
978
361
self.disable_initiator_tag = None
979
362
self.checker_callback_tag = None
363
self.checker_command = config["checker"]
980
364
self.current_checker_command = None
981
self.approved = None
365
self.last_connect = None
366
self._approved = None
367
self.approved_by_default = config.get("approved_by_default",
368
True)
982
369
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
370
self.approval_delay = string_to_delta(
371
config["approval_delay"])
372
self.approval_duration = string_to_delta(
373
config["approval_duration"])
374
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
375
996
376
def send_changedstate(self):
997
with self.changedstate:
998
self.changedstate.notify_all()
999
377
self.changedstate.acquire()
378
self.changedstate.notify_all()
379
self.changedstate.release()
380
1000
381
def enable(self):
1001
382
"""Start this client's checker and timeout hooks"""
1002
383
if getattr(self, "enabled", False):
1003
384
# Already enabled
1004
385
return
1005
self.expires = datetime.datetime.utcnow() + self.timeout
1006
self.enabled = True
386
self.send_changedstate()
1007
387
self.last_enabled = datetime.datetime.utcnow()
1008
self.init_checker()
1009
self.send_changedstate()
1010
388
# Schedule a new checker to be started an 'interval' from now,
389
# and every interval from then on.
390
self.checker_initiator_tag = (gobject.timeout_add
391
(self.interval_milliseconds(),
392
self.start_checker))
393
# Schedule a disable() when 'timeout' has passed
394
self.disable_initiator_tag = (gobject.timeout_add
395
(self.timeout_milliseconds(),
396
self.disable))
397
self.enabled = True
398
# Also start a new checker *right now*.
399
self.start_checker()
400
1011
401
def disable(self, quiet=True):
1012
402
"""Disable this client."""
1013
403
if not getattr(self, "enabled", False):
1014
404
return False
1015
405
if not quiet:
406
self.send_changedstate()
407
if not quiet:
1016
408
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)
409
if getattr(self, "disable_initiator_tag", False):
410
gobject.source_remove(self.disable_initiator_tag)
1019
411
self.disable_initiator_tag = None
1020
self.expires = None
1021
if getattr(self, "checker_initiator_tag", None) is not None:
1022
GLib.source_remove(self.checker_initiator_tag)
412
if getattr(self, "checker_initiator_tag", False):
413
gobject.source_remove(self.checker_initiator_tag)
1023
414
self.checker_initiator_tag = None
1024
415
self.stop_checker()
416
if self.disable_hook:
417
self.disable_hook(self)
1025
418
self.enabled = False
1026
if not quiet:
1027
self.send_changedstate()
1028
# Do not run this again if called by a GLib.timeout_add
419
# Do not run this again if called by a gobject.timeout_add
1029
420
return False
1030
421
1031
422
def __del__(self):
423
self.disable_hook = None
1032
424
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):
425
426
def checker_callback(self, pid, condition, command):
1052
427
"""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
428
self.checker_callback_tag = None
1058
429
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:
430
if os.WIFEXITED(condition):
431
exitstatus = os.WEXITSTATUS(condition)
432
if exitstatus == 0:
1064
433
logger.info("Checker for %(name)s succeeded",
1065
434
vars(self))
1066
435
self.checked_ok()
1067
436
else:
1068
logger.info("Checker for %(name)s failed", vars(self))
437
logger.info("Checker for %(name)s failed",
438
vars(self))
1069
439
else:
1070
self.last_checker_status = -1
1071
self.last_checker_signal = -returncode
1072
440
logger.warning("Checker for %(name)s crashed?",
1073
441
vars(self))
1074
return False
1075
442
1076
443
def checked_ok(self):
1077
"""Assert that the client has been seen, alive and well."""
444
"""Bump up the timeout for this client.
445
446
This should only be called when the client has been seen,
447
alive and well.
448
"""
1078
449
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."""
1085
if timeout is None:
1086
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
450
gobject.source_remove(self.disable_initiator_tag)
451
self.disable_initiator_tag = (gobject.timeout_add
452
(self.timeout_milliseconds(),
453
self.disable))
454
1095
455
def need_approval(self):
1096
456
self.last_approval_request = datetime.datetime.utcnow()
1097
457
1098
458
def start_checker(self):
1099
459
"""Start a new checker subprocess if one is not running.
1100
460
1101
461
If a checker already exists, leave it running and do
1102
462
nothing."""
1103
463
# 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
464
# did that, then if a checker (for some reason) started
465
# running slowly and taking more than 'interval' time, the
466
# client would inevitably timeout, since no checker would get
467
# a chance to run to completion. If we instead leave running
1108
468
# checkers alone, the checker would have to take more time
1109
469
# than 'timeout' for the client to be disabled, which is as it
1110
470
# 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
471
472
# If a checker exists, make sure it is not a zombie
473
try:
474
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
475
except (AttributeError, OSError) as error:
476
if (isinstance(error, OSError)
477
and error.errno != errno.ECHILD):
478
raise error
479
else:
480
if pid:
481
logger.warning("Checker was a zombie")
482
gobject.source_remove(self.checker_callback_tag)
483
self.checker_callback(pid, status,
484
self.current_checker_command)
1116
485
# Start a new checker if needed
1117
486
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
487
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
488
# In case checker_command has exactly one % operator
489
command = self.checker_command % self.host
490
except TypeError:
491
# Escape attributes for the shell
492
escaped_attrs = dict(
493
(attr,
494
re.escape(unicode(str(getattr(self, attr, "")),
495
errors=
496
'replace')))
497
for attr in
498
self.runtime_expansions)
499
500
try:
501
command = self.checker_command % escaped_attrs
502
except TypeError as error:
503
logger.error('Could not format string "%s":'
504
' %s', self.checker_command, error)
505
return True # Try again later
1129
506
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
507
try:
508
logger.info("Starting checker %r for %s",
509
command, self.name)
510
# We don't need to redirect stdout and stderr, since
511
# in normal mode, that is already done by daemon(),
512
# and in debug mode we don't want to. (Stdin is
513
# always replaced by /dev/null.)
514
self.checker = subprocess.Popen(command,
515
close_fds=True,
516
shell=True, cwd="/")
517
self.checker_callback_tag = (gobject.child_watch_add
518
(self.checker.pid,
519
self.checker_callback,
520
data=command))
521
# The checker may have completed before the gobject
522
# watch was added. Check for this.
523
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
524
if pid:
525
gobject.source_remove(self.checker_callback_tag)
526
self.checker_callback(pid, status, command)
527
except OSError as error:
528
logger.error("Failed to start subprocess: %s",
529
error)
530
# Re-run this periodically if run by gobject.timeout_add
1157
531
return True
1158
532
1159
533
def stop_checker(self):
1160
534
"""Force the checker process, if any, to stop."""
1161
535
if self.checker_callback_tag:
1162
GLib.source_remove(self.checker_callback_tag)
536
gobject.source_remove(self.checker_callback_tag)
1163
537
self.checker_callback_tag = None
1164
538
if getattr(self, "checker", None) is None:
1165
539
return
1166
540
logger.debug("Stopping checker for %(name)s", vars(self))
1167
self.checker.terminate()
541
try:
542
os.kill(self.checker.pid, signal.SIGTERM)
543
#time.sleep(0.5)
544
#if self.checker.poll() is None:
545
# os.kill(self.checker.pid, signal.SIGKILL)
546
except OSError as error:
547
if error.errno != errno.ESRCH: # No such process
548
raise
1168
549
self.checker = None
1169
550
1170
1171
def dbus_service_property(dbus_interface,
1172
signature="v",
1173
access="readwrite",
1174
byte_arrays=False):
551
def dbus_service_property(dbus_interface, signature="v",
552
access="readwrite", byte_arrays=False):
1175
553
"""Decorators for marking methods of a DBusObjectWithProperties to
1176
554
become properties on the D-Bus.
1177
555
1178
556
The decorated method will be called with no arguments by "Get"
1179
557
and with one argument by "Set".
1180
558
1181
559
The parameters, where they are supported, are the same as
1182
560
dbus.service.method, except there is only "signature", since the
1183
561
type from Get() and the type sent to Set() is the same.
1186
564
# "Set" method, so we fail early here:
1187
565
if byte_arrays and signature != "ay":
1188
566
raise ValueError("Byte arrays not supported for non-'ay'"
1189
" signature {!r}".format(signature))
1190
567
" signature %r" % signature)
1191
568
def decorator(func):
1192
569
func._dbus_is_property = True
1193
570
func._dbus_interface = dbus_interface
1196
573
func._dbus_name = func.__name__
1197
574
if func._dbus_name.endswith("_dbus_property"):
1198
575
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
576
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
577
return func
1245
578
return decorator
1246
579
1247
580
1248
581
class DBusPropertyException(dbus.exceptions.DBusException):
1249
582
"""A base class for D-Bus property-related exceptions
1250
583
"""
1251
pass
584
def __unicode__(self):
585
return unicode(str(self))
1252
586
1253
587
1254
588
class DBusPropertyAccessException(DBusPropertyException):
1263
597
pass
1264
598
1265
599
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):
600
class DBusObjectWithProperties(dbus.service.Object):
1356
601
"""A D-Bus object with properties.
1357
602
1358
603
Classes inheriting from this can use the dbus_service_property
1359
604
decorator to expose methods as D-Bus properties. It exposes the
1360
605
standard Get(), Set(), and GetAll() methods on the D-Bus.
1361
606
"""
1362
607
608
@staticmethod
609
def _is_dbus_property(obj):
610
return getattr(obj, "_dbus_is_property", False)
611
612
def _get_all_dbus_properties(self):
613
"""Returns a generator of (name, attribute) pairs
614
"""
615
return ((prop._dbus_name, prop)
616
for name, prop in
617
inspect.getmembers(self, self._is_dbus_property))
618
1363
619
def _get_dbus_property(self, interface_name, property_name):
1364
620
"""Returns a bound method if one exists which is a D-Bus
1365
621
property with the specified name and interface.
1366
622
"""
1367
for cls in self.__class__.__mro__:
1368
for name, value in inspect.getmembers(
1369
cls, self._is_dbus_thing("property")):
1370
if (value._dbus_name == property_name
1371
and value._dbus_interface == interface_name):
1372
return value.__get__(self)
1373
623
for name in (property_name,
624
property_name + "_dbus_property"):
625
prop = getattr(self, name, None)
626
if (prop is None
627
or not self._is_dbus_property(prop)
628
or prop._dbus_name != property_name
629
or (interface_name and prop._dbus_interface
630
and interface_name != prop._dbus_interface)):
631
continue
632
return prop
1374
633
# 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",
634
raise DBusPropertyNotFound(self.dbus_object_path + ":"
635
+ interface_name + "."
636
+ property_name)
637
638
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1389
639
out_signature="v")
1390
640
def Get(self, interface_name, property_name):
1391
641
"""Standard D-Bus property Get() method, see D-Bus standard.
1397
647
if not hasattr(value, "variant_level"):
1398
648
return value
1399
649
return type(value)(value, variant_level=value.variant_level+1)
1400
650
1401
651
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1402
652
def Set(self, interface_name, property_name, value):
1403
653
"""Standard D-Bus property Set() method, see D-Bus standard.
1409
659
# The byte_arrays option is not supported yet on
1410
660
# signatures other than "ay".
1411
661
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))
662
raise ValueError
663
value = dbus.ByteArray(''.join(unichr(byte)
664
for byte in value))
1417
665
prop(value)
1418
1419
@dbus.service.method(dbus.PROPERTIES_IFACE,
1420
in_signature="s",
666
667
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1421
668
out_signature="a{sv}")
1422
669
def GetAll(self, interface_name):
1423
670
"""Standard D-Bus property GetAll() method, see D-Bus
1425
672
1426
673
Note: Will not include properties with access="write".
1427
674
"""
1428
properties = {}
1429
for name, prop in self._get_all_dbus_things("property"):
675
all = {}
676
for name, prop in self._get_all_dbus_properties():
1430
677
if (interface_name
1431
678
and interface_name != prop._dbus_interface):
1432
679
# Interface non-empty but did not match
1436
683
continue
1437
684
value = prop()
1438
685
if not hasattr(value, "variant_level"):
1439
properties[name] = value
686
all[name] = value
1440
687
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
688
all[name] = type(value)(value, variant_level=
689
value.variant_level+1)
690
return dbus.Dictionary(all, signature="sv")
691
1453
692
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1454
693
out_signature="s",
1455
694
path_keyword='object_path',
1456
695
connection_keyword='connection')
1457
696
def Introspect(self, object_path, connection):
1458
"""Overloading of standard D-Bus method.
1459
1460
Inserts property tags and interface annotation tags.
697
"""Standard D-Bus method, overloaded to insert property tags.
1461
698
"""
1462
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1463
object_path,
1464
connection)
699
xmlstring = dbus.service.Object.Introspect(self, object_path,
700
connection)
1465
701
try:
1466
702
document = xml.dom.minidom.parseString(xmlstring)
1467
1468
703
def make_tag(document, name, prop):
1469
704
e = document.createElement("property")
1470
705
e.setAttribute("name", name)
1471
706
e.setAttribute("type", prop._dbus_signature)
1472
707
e.setAttribute("access", prop._dbus_access)
1473
708
return e
1474
1475
709
for if_tag in document.getElementsByTagName("interface"):
1476
# Add property tags
1477
710
for tag in (make_tag(document, name, prop)
1478
711
for name, prop
1479
in self._get_all_dbus_things("property")
712
in self._get_all_dbus_properties()
1480
713
if prop._dbus_interface
1481
714
== if_tag.getAttribute("name")):
1482
715
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
716
# Add the names to the return values for the
1500
717
# "org.freedesktop.DBus.Properties" methods
1501
718
if (if_tag.getAttribute("name")
1516
733
except (AttributeError, xml.dom.DOMException,
1517
734
xml.parsers.expat.ExpatError) as error:
1518
735
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):
1595
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1596
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).
1623
"""
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):
1632
# Ignore non-D-Bus attributes, and D-Bus attributes
1633
# with the wrong interface name
1634
if (not hasattr(attribute, "_dbus_interface")
1635
or not attribute._dbus_interface.startswith(
1636
orig_interface_name)):
1637
continue
1638
# Create an alternate D-Bus interface name based on
1639
# the current name
1640
alt_interface = attribute._dbus_interface.replace(
1641
orig_interface_name, alt_interface_name)
1642
interface_names.add(alt_interface)
1643
# Is this a D-Bus signal?
1644
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(
1649
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)
1657
# Create a new, but exactly alike, function
1658
# object, and decorate it to be a new D-Bus signal
1659
# 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
1671
# 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
1675
def fixscope(func1, func2):
1676
"""This function is a scope container to pass
1677
func1 and func2 to the "call_both" function
1678
outside of its arguments"""
1679
1680
@functools.wraps(func2)
1681
def call_both(*args, **kwargs):
1682
"""This function will emit two D-Bus
1683
signals by calling func1 and func2"""
1684
func1(*args, **kwargs)
1685
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
return call_both
1693
# Create the "call_both" function and add it to
1694
# the class
1695
attr[attrname] = fixscope(attribute, new_function)
1696
# Is this a D-Bus method?
1697
elif getattr(attribute, "_dbus_is_method", False):
1698
# Create a new, but exactly alike, function
1699
# object. Decorate it to be a new D-Bus method
1700
# with the alternate D-Bus interface name. Add it
1701
# 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
1714
# Is this a D-Bus property?
1715
elif getattr(attribute, "_dbus_is_property", False):
1716
# Create a new, but exactly alike, function
1717
# object, and decorate it to be a new D-Bus
1718
# property with the alternate D-Bus interface
1719
# 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"})
736
error)
737
return xmlstring
738
739
1772
740
class ClientDBus(Client, DBusObjectWithProperties):
1773
741
"""A Client class using D-Bus
1774
742
1775
743
Attributes:
1776
744
dbus_object_path: dbus.ObjectPath
1777
745
bus: dbus.SystemBus()
1778
746
"""
1779
747
1780
748
runtime_expansions = (Client.runtime_expansions
1781
+ ("dbus_object_path", ))
1782
1783
_interface = "se.recompile.Mandos.Client"
1784
749
+ ("dbus_object_path",))
750
1785
751
# dbus.service.Object doesn't use super(), so we can't either.
1786
1787
def __init__(self, bus=None, *args, **kwargs):
752
753
def __init__(self, bus = None, *args, **kwargs):
754
self._approvals_pending = 0
1788
755
self.bus = bus
1789
756
Client.__init__(self, *args, **kwargs)
1790
757
# Only now, when this client is initialized, can it show up on
1791
758
# the D-Bus
1792
client_object_name = str(self.name).translate(
759
client_object_name = unicode(self.name).translate(
1793
760
{ord("."): ord("_"),
1794
761
ord("-"): ord("_")})
1795
self.dbus_object_path = dbus.ObjectPath(
1796
"/clients/" + client_object_name)
762
self.dbus_object_path = (dbus.ObjectPath
763
("/clients/" + client_object_name))
1797
764
DBusObjectWithProperties.__init__(self, self.bus,
1798
765
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):
1805
""" Modify a variable so that it's a property which announces
1806
its changes to DBus.
1807
1808
transform_fun: Function that takes a value and a variant_level
1809
and transforms it to a D-Bus type.
1810
dbus_name: D-Bus name of the variable
1811
type_func: Function that transform the value before sending it
1812
to the D-Bus. Default: no transform
1813
variant_level: D-Bus variant level. Default: 1
1814
"""
1815
attrname = "_{}".format(dbus_name)
1816
1817
def setter(self, value):
1818
if hasattr(self, "dbus_object_path"):
1819
if (not hasattr(self, attrname) or
1820
type_func(getattr(self, attrname, None))
1821
!= 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())
1837
setattr(self, attrname, value)
1838
1839
return property(lambda self: getattr(self, attrname), setter)
1840
1841
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1842
approvals_pending = notifychangeproperty(dbus.Boolean,
1843
"ApprovalPending",
1844
type_func=bool)
1845
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1846
last_enabled = notifychangeproperty(datetime_to_dbus,
1847
"LastEnabled")
1848
checker = notifychangeproperty(
1849
dbus.Boolean, "CheckerRunning",
1850
type_func=lambda checker: checker is not None)
1851
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1852
"LastCheckedOK")
1853
last_checker_status = notifychangeproperty(dbus.Int16,
1854
"LastCheckerStatus")
1855
last_approval_request = notifychangeproperty(
1856
datetime_to_dbus, "LastApprovalRequest")
1857
approved_by_default = notifychangeproperty(dbus.Boolean,
1858
"ApprovedByDefault")
1859
approval_delay = notifychangeproperty(
1860
dbus.UInt64, "ApprovalDelay",
1861
type_func=lambda td: td.total_seconds() * 1000)
1862
approval_duration = notifychangeproperty(
1863
dbus.UInt64, "ApprovalDuration",
1864
type_func=lambda td: td.total_seconds() * 1000)
1865
host = notifychangeproperty(dbus.String, "Host")
1866
timeout = notifychangeproperty(
1867
dbus.UInt64, "Timeout",
1868
type_func=lambda td: td.total_seconds() * 1000)
1869
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)
1875
checker_command = notifychangeproperty(dbus.String, "Checker")
1876
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1877
invalidate_only=True)
1878
1879
del notifychangeproperty
1880
766
767
def _get_approvals_pending(self):
768
return self._approvals_pending
769
def _set_approvals_pending(self, value):
770
old_value = self._approvals_pending
771
self._approvals_pending = value
772
bval = bool(value)
773
if (hasattr(self, "dbus_object_path")
774
and bval is not bool(old_value)):
775
dbus_bool = dbus.Boolean(bval, variant_level=1)
776
self.PropertyChanged(dbus.String("ApprovalPending"),
777
dbus_bool)
778
779
approvals_pending = property(_get_approvals_pending,
780
_set_approvals_pending)
781
del _get_approvals_pending, _set_approvals_pending
782
783
@staticmethod
784
def _datetime_to_dbus(dt, variant_level=0):
785
"""Convert a UTC datetime.datetime() to a D-Bus type."""
786
return dbus.String(dt.isoformat(),
787
variant_level=variant_level)
788
789
def enable(self):
790
oldstate = getattr(self, "enabled", False)
791
r = Client.enable(self)
792
if oldstate != self.enabled:
793
# Emit D-Bus signals
794
self.PropertyChanged(dbus.String("Enabled"),
795
dbus.Boolean(True, variant_level=1))
796
self.PropertyChanged(
797
dbus.String("LastEnabled"),
798
self._datetime_to_dbus(self.last_enabled,
799
variant_level=1))
800
return r
801
802
def disable(self, quiet = False):
803
oldstate = getattr(self, "enabled", False)
804
r = Client.disable(self, quiet=quiet)
805
if not quiet and oldstate != self.enabled:
806
# Emit D-Bus signal
807
self.PropertyChanged(dbus.String("Enabled"),
808
dbus.Boolean(False, variant_level=1))
809
return r
810
1881
811
def __del__(self, *args, **kwargs):
1882
812
try:
1883
813
self.remove_from_connection()
1886
816
if hasattr(DBusObjectWithProperties, "__del__"):
1887
817
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1888
818
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:
819
820
def checker_callback(self, pid, condition, command,
821
*args, **kwargs):
822
self.checker_callback_tag = None
823
self.checker = None
824
# Emit D-Bus signal
825
self.PropertyChanged(dbus.String("CheckerRunning"),
826
dbus.Boolean(False, variant_level=1))
827
if os.WIFEXITED(condition):
828
exitstatus = os.WEXITSTATUS(condition)
1897
829
# Emit D-Bus signal
1898
830
self.CheckerCompleted(dbus.Int16(exitstatus),
1899
# This is specific to GNU libC
1900
dbus.Int64(exitstatus << 8),
831
dbus.Int64(condition),
1901
832
dbus.String(command))
1902
833
else:
1903
834
# Emit D-Bus signal
1904
835
self.CheckerCompleted(dbus.Int16(-1),
1905
dbus.Int64(
1906
# This is specific to GNU libC
1907
(exitstatus << 8)
1908
| self.last_checker_signal),
836
dbus.Int64(condition),
1909
837
dbus.String(command))
1910
return ret
1911
838
839
return Client.checker_callback(self, pid, condition, command,
840
*args, **kwargs)
841
842
def checked_ok(self, *args, **kwargs):
843
Client.checked_ok(self, *args, **kwargs)
844
# Emit D-Bus signal
845
self.PropertyChanged(
846
dbus.String("LastCheckedOK"),
847
(self._datetime_to_dbus(self.last_checked_ok,
848
variant_level=1)))
849
850
def need_approval(self, *args, **kwargs):
851
r = Client.need_approval(self, *args, **kwargs)
852
# Emit D-Bus signal
853
self.PropertyChanged(
854
dbus.String("LastApprovalRequest"),
855
(self._datetime_to_dbus(self.last_approval_request,
856
variant_level=1)))
857
return r
858
1912
859
def start_checker(self, *args, **kwargs):
1913
old_checker_pid = getattr(self.checker, "pid", None)
860
old_checker = self.checker
861
if self.checker is not None:
862
old_checker_pid = self.checker.pid
863
else:
864
old_checker_pid = None
1914
865
r = Client.start_checker(self, *args, **kwargs)
1915
866
# Only if new checker process was started
1916
867
if (self.checker is not None
1917
868
and old_checker_pid != self.checker.pid):
1918
869
# Emit D-Bus signal
1919
870
self.CheckerStarted(self.current_checker_command)
871
self.PropertyChanged(
872
dbus.String("CheckerRunning"),
873
dbus.Boolean(True, variant_level=1))
874
return r
875
876
def stop_checker(self, *args, **kwargs):
877
old_checker = getattr(self, "checker", None)
878
r = Client.stop_checker(self, *args, **kwargs)
879
if (old_checker is not None
880
and getattr(self, "checker", None) is None):
881
self.PropertyChanged(dbus.String("CheckerRunning"),
882
dbus.Boolean(False, variant_level=1))
1920
883
return r
1921
884
1922
885
def _reset_approved(self):
1923
self.approved = None
886
self._approved = None
1924
887
return False
1925
888
1926
889
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
890
self.send_changedstate()
1931
1932
# D-Bus methods, signals & properties
1933
1934
# Interfaces
1935
1936
# Signals
1937
891
self._approved = value
892
gobject.timeout_add(self._timedelta_to_milliseconds
893
(self.approval_duration),
894
self._reset_approved)
895
896
897
## D-Bus methods, signals & properties
898
_interface = "se.bsnet.fukt.Mandos.Client"
899
900
## Signals
901
1938
902
# CheckerCompleted - signal
1939
903
@dbus.service.signal(_interface, signature="nxs")
1940
904
def CheckerCompleted(self, exitcode, waitstatus, command):
1941
905
"D-Bus signal"
1942
906
pass
1943
907
1944
908
# CheckerStarted - signal
1945
909
@dbus.service.signal(_interface, signature="s")
1946
910
def CheckerStarted(self, command):
1947
911
"D-Bus signal"
1948
912
pass
1949
913
1950
914
# PropertyChanged - signal
1951
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1952
915
@dbus.service.signal(_interface, signature="sv")
1953
916
def PropertyChanged(self, property, value):
1954
917
"D-Bus signal"
1955
918
pass
1956
919
1957
920
# GotSecret - signal
1958
921
@dbus.service.signal(_interface)
1959
922
def GotSecret(self):
1962
925
server to mandos-client
1963
926
"""
1964
927
pass
1965
928
1966
929
# Rejected - signal
1967
930
@dbus.service.signal(_interface, signature="s")
1968
931
def Rejected(self, reason):
1969
932
"D-Bus signal"
1970
933
pass
1971
934
1972
935
# NeedApproval - signal
1973
936
@dbus.service.signal(_interface, signature="tb")
1974
937
def NeedApproval(self, timeout, default):
1975
938
"D-Bus signal"
1976
939
return self.need_approval()
1977
1978
# Methods
1979
940
941
## Methods
942
1980
943
# Approve - method
1981
944
@dbus.service.method(_interface, in_signature="b")
1982
945
def Approve(self, value):
1983
946
self.approve(value)
1984
947
1985
948
# CheckedOK - method
1986
949
@dbus.service.method(_interface)
1987
950
def CheckedOK(self):
1988
951
self.checked_ok()
1989
952
1990
953
# Enable - method
1991
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1992
954
@dbus.service.method(_interface)
1993
955
def Enable(self):
1994
956
"D-Bus method"
1995
957
self.enable()
1996
958
1997
959
# StartChecker - method
1998
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1999
960
@dbus.service.method(_interface)
2000
961
def StartChecker(self):
2001
962
"D-Bus method"
2002
963
self.start_checker()
2003
964
2004
965
# Disable - method
2005
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2006
966
@dbus.service.method(_interface)
2007
967
def Disable(self):
2008
968
"D-Bus method"
2009
969
self.disable()
2010
970
2011
971
# StopChecker - method
2012
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2013
972
@dbus.service.method(_interface)
2014
973
def StopChecker(self):
2015
974
self.stop_checker()
2016
2017
# Properties
2018
975
976
## Properties
977
2019
978
# ApprovalPending - property
2020
979
@dbus_service_property(_interface, signature="b", access="read")
2021
980
def ApprovalPending_dbus_property(self):
2022
981
return dbus.Boolean(bool(self.approvals_pending))
2023
982
2024
983
# ApprovedByDefault - property
2025
@dbus_service_property(_interface,
2026
signature="b",
984
@dbus_service_property(_interface, signature="b",
2027
985
access="readwrite")
2028
986
def ApprovedByDefault_dbus_property(self, value=None):
2029
987
if value is None: # get
2030
988
return dbus.Boolean(self.approved_by_default)
2031
989
self.approved_by_default = bool(value)
2032
990
# Emit D-Bus signal
991
self.PropertyChanged(dbus.String("ApprovedByDefault"),
992
dbus.Boolean(value, variant_level=1))
993
2033
994
# ApprovalDelay - property
2034
@dbus_service_property(_interface,
2035
signature="t",
995
@dbus_service_property(_interface, signature="t",
2036
996
access="readwrite")
2037
997
def ApprovalDelay_dbus_property(self, value=None):
2038
998
if value is None: # get
2039
return dbus.UInt64(self.approval_delay.total_seconds()
2040
* 1000)
999
return dbus.UInt64(self.approval_delay_milliseconds())
2041
1000
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2042
1001
# Emit D-Bus signal
1002
self.PropertyChanged(dbus.String("ApprovalDelay"),
1003
dbus.UInt64(value, variant_level=1))
1004
2043
1005
# ApprovalDuration - property
2044
@dbus_service_property(_interface,
2045
signature="t",
1006
@dbus_service_property(_interface, signature="t",
2046
1007
access="readwrite")
2047
1008
def ApprovalDuration_dbus_property(self, value=None):
2048
1009
if value is None: # get
2049
return dbus.UInt64(self.approval_duration.total_seconds()
2050
* 1000)
1010
return dbus.UInt64(self._timedelta_to_milliseconds(
1011
self.approval_duration))
2051
1012
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2052
1013
# Emit D-Bus signal
1014
self.PropertyChanged(dbus.String("ApprovalDuration"),
1015
dbus.UInt64(value, variant_level=1))
1016
2053
1017
# Name - property
2054
@dbus_annotations(
2055
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2056
1018
@dbus_service_property(_interface, signature="s", access="read")
2057
1019
def Name_dbus_property(self):
2058
1020
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
1021
2067
1022
# Fingerprint - property
2068
@dbus_annotations(
2069
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2070
1023
@dbus_service_property(_interface, signature="s", access="read")
2071
1024
def Fingerprint_dbus_property(self):
2072
1025
return dbus.String(self.fingerprint)
2073
1026
2074
1027
# Host - property
2075
@dbus_service_property(_interface,
2076
signature="s",
1028
@dbus_service_property(_interface, signature="s",
2077
1029
access="readwrite")
2078
1030
def Host_dbus_property(self, value=None):
2079
1031
if value is None: # get
2080
1032
return dbus.String(self.host)
2081
self.host = str(value)
2082
1033
self.host = value
1034
# Emit D-Bus signal
1035
self.PropertyChanged(dbus.String("Host"),
1036
dbus.String(value, variant_level=1))
1037
2083
1038
# Created - property
2084
@dbus_annotations(
2085
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2086
1039
@dbus_service_property(_interface, signature="s", access="read")
2087
1040
def Created_dbus_property(self):
2088
return datetime_to_dbus(self.created)
2089
1041
return dbus.String(self._datetime_to_dbus(self.created))
1042
2090
1043
# LastEnabled - property
2091
1044
@dbus_service_property(_interface, signature="s", access="read")
2092
1045
def LastEnabled_dbus_property(self):
2093
return datetime_to_dbus(self.last_enabled)
2094
1046
if self.last_enabled is None:
1047
return dbus.String("")
1048
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1049
2095
1050
# Enabled - property
2096
@dbus_service_property(_interface,
2097
signature="b",
1051
@dbus_service_property(_interface, signature="b",
2098
1052
access="readwrite")
2099
1053
def Enabled_dbus_property(self, value=None):
2100
1054
if value is None: # get
2103
1057
self.enable()
2104
1058
else:
2105
1059
self.disable()
2106
1060
2107
1061
# LastCheckedOK - property
2108
@dbus_service_property(_interface,
2109
signature="s",
1062
@dbus_service_property(_interface, signature="s",
2110
1063
access="readwrite")
2111
1064
def LastCheckedOK_dbus_property(self, value=None):
2112
1065
if value is not None:
2113
1066
self.checked_ok()
2114
1067
return
2115
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
2122
# Expires - property
2123
@dbus_service_property(_interface, signature="s", access="read")
2124
def Expires_dbus_property(self):
2125
return datetime_to_dbus(self.expires)
2126
1068
if self.last_checked_ok is None:
1069
return dbus.String("")
1070
return dbus.String(self._datetime_to_dbus(self
1071
.last_checked_ok))
1072
2127
1073
# LastApprovalRequest - property
2128
1074
@dbus_service_property(_interface, signature="s", access="read")
2129
1075
def LastApprovalRequest_dbus_property(self):
2130
return datetime_to_dbus(self.last_approval_request)
2131
1076
if self.last_approval_request is None:
1077
return dbus.String("")
1078
return dbus.String(self.
1079
_datetime_to_dbus(self
1080
.last_approval_request))
1081
2132
1082
# Timeout - property
2133
@dbus_service_property(_interface,
2134
signature="t",
1083
@dbus_service_property(_interface, signature="t",
2135
1084
access="readwrite")
2136
1085
def Timeout_dbus_property(self, value=None):
2137
1086
if value is None: # get
2138
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2139
old_timeout = self.timeout
1087
return dbus.UInt64(self.timeout_milliseconds())
2140
1088
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
2157
# ExtendedTimeout - property
2158
@dbus_service_property(_interface,
2159
signature="t",
2160
access="readwrite")
2161
def ExtendedTimeout_dbus_property(self, value=None):
2162
if value is None: # get
2163
return dbus.UInt64(self.extended_timeout.total_seconds()
2164
* 1000)
2165
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2166
1089
# Emit D-Bus signal
1090
self.PropertyChanged(dbus.String("Timeout"),
1091
dbus.UInt64(value, variant_level=1))
1092
if getattr(self, "disable_initiator_tag", None) is None:
1093
return
1094
# Reschedule timeout
1095
gobject.source_remove(self.disable_initiator_tag)
1096
self.disable_initiator_tag = None
1097
time_to_die = (self.
1098
_timedelta_to_milliseconds((self
1099
.last_checked_ok
1100
+ self.timeout)
1101
- datetime.datetime
1102
.utcnow()))
1103
if time_to_die <= 0:
1104
# The timeout has passed
1105
self.disable()
1106
else:
1107
self.disable_initiator_tag = (gobject.timeout_add
1108
(time_to_die, self.disable))
1109
2167
1110
# Interval - property
2168
@dbus_service_property(_interface,
2169
signature="t",
1111
@dbus_service_property(_interface, signature="t",
2170
1112
access="readwrite")
2171
1113
def Interval_dbus_property(self, value=None):
2172
1114
if value is None: # get
2173
return dbus.UInt64(self.interval.total_seconds() * 1000)
1115
return dbus.UInt64(self.interval_milliseconds())
2174
1116
self.interval = datetime.timedelta(0, 0, 0, value)
1117
# Emit D-Bus signal
1118
self.PropertyChanged(dbus.String("Interval"),
1119
dbus.UInt64(value, variant_level=1))
2175
1120
if getattr(self, "checker_initiator_tag", None) is None:
2176
1121
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
1122
# Reschedule checker run
1123
gobject.source_remove(self.checker_initiator_tag)
1124
self.checker_initiator_tag = (gobject.timeout_add
1125
(value, self.start_checker))
1126
self.start_checker() # Start one now, too
2183
1127
2184
1128
# Checker - property
2185
@dbus_service_property(_interface,
2186
signature="s",
1129
@dbus_service_property(_interface, signature="s",
2187
1130
access="readwrite")
2188
1131
def Checker_dbus_property(self, value=None):
2189
1132
if value is None: # get
2190
1133
return dbus.String(self.checker_command)
2191
self.checker_command = str(value)
2192
1134
self.checker_command = value
1135
# Emit D-Bus signal
1136
self.PropertyChanged(dbus.String("Checker"),
1137
dbus.String(self.checker_command,
1138
variant_level=1))
1139
2193
1140
# CheckerRunning - property
2194
@dbus_service_property(_interface,
2195
signature="b",
1141
@dbus_service_property(_interface, signature="b",
2196
1142
access="readwrite")
2197
1143
def CheckerRunning_dbus_property(self, value=None):
2198
1144
if value is None: # get
2201
1147
self.start_checker()
2202
1148
else:
2203
1149
self.stop_checker()
2204
1150
2205
1151
# ObjectPath - property
2206
@dbus_annotations(
2207
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2208
"org.freedesktop.DBus.Deprecated": "true"})
2209
1152
@dbus_service_property(_interface, signature="o", access="read")
2210
1153
def ObjectPath_dbus_property(self):
2211
return self.dbus_object_path # is already a dbus.ObjectPath
2212
1154
return self.dbus_object_path # is already a dbus.ObjectPath
1155
2213
1156
# 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)
1157
@dbus_service_property(_interface, signature="ay",
1158
access="write", byte_arrays=True)
2221
1159
def Secret_dbus_property(self, value):
2222
self.secret = bytes(value)
2223
1160
self.secret = str(value)
1161
2224
1162
del _interface
2225
1163
2226
1164
2227
class ProxyClient:
2228
def __init__(self, child_pipe, key_id, fpr, address):
1165
class ProxyClient(object):
1166
def __init__(self, child_pipe, fpr, address):
2229
1167
self._pipe = child_pipe
2230
self._pipe.send(('init', key_id, fpr, address))
1168
self._pipe.send(('init', fpr, address))
2231
1169
if not self._pipe.recv():
2232
raise KeyError(key_id or fpr)
1170
raise KeyError()
2233
1171
2234
1172
def __getattribute__(self, name):
2235
if name == '_pipe':
1173
if(name == '_pipe'):
2236
1174
return super(ProxyClient, self).__getattribute__(name)
2237
1175
self._pipe.send(('getattr', name))
2238
1176
data = self._pipe.recv()
2239
1177
if data[0] == 'data':
2240
1178
return data[1]
2241
1179
if data[0] == 'function':
2242
2243
1180
def func(*args, **kwargs):
2244
1181
self._pipe.send(('funcall', name, args, kwargs))
2245
1182
return self._pipe.recv()[1]
2246
2247
1183
return func
2248
1184
2249
1185
def __setattr__(self, name, value):
2250
if name == '_pipe':
1186
if(name == '_pipe'):
2251
1187
return super(ProxyClient, self).__setattr__(name, value)
2252
1188
self._pipe.send(('setattr', name, value))
2253
1189
2254
1190
2255
1191
class ClientHandler(socketserver.BaseRequestHandler, object):
2256
1192
"""A class to handle client connections.
2257
1193
2258
1194
Instantiated once for each connection to handle it.
2259
1195
Note: This will run in its own forked process."""
2260
1196
2261
1197
def handle(self):
2262
1198
with contextlib.closing(self.server.child_pipe) as child_pipe:
2263
1199
logger.info("TCP connection from: %s",
2264
str(self.client_address))
1200
unicode(self.client_address))
2265
1201
logger.debug("Pipe FD: %d",
2266
1202
self.server.child_pipe.fileno())
2267
1203
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"))
1204
session = (gnutls.connection
1205
.ClientSession(self.request,
1206
gnutls.connection
1207
.X509Credentials()))
1208
1209
# Note: gnutls.connection.X509Credentials is really a
1210
# generic GnuTLS certificate credentials object so long as
1211
# no X.509 keys are added to it. Therefore, we can use it
1212
# here despite using OpenPGP certificates.
1213
1214
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1215
# "+AES-256-CBC", "+SHA1",
1216
# "+COMP-NULL", "+CTYPE-OPENPGP",
1217
# "+DHE-DSS"))
2274
1218
# Use a fallback default, since this MUST be set.
2275
1219
priority = self.server.gnutls_priority
2276
1220
if priority is None:
2277
1221
priority = "NORMAL"
2278
gnutls.priority_set_direct(session._c_object,
2279
priority.encode("utf-8"),
2280
None)
1222
(gnutls.library.functions
1223
.gnutls_priority_set_direct(session._c_object,
1224
priority, None))
2281
1225
2282
1226
# Start communication using the Mandos protocol
2283
1227
# Get protocol number
2285
1229
logger.debug("Protocol version: %r", line)
2286
1230
try:
2287
1231
if int(line.strip().split()[0]) > 1:
2288
raise RuntimeError(line)
1232
raise RuntimeError
2289
1233
except (ValueError, IndexError, RuntimeError) as error:
2290
1234
logger.error("Unknown protocol version: %s", error)
2291
1235
return
2293
1237
# Start GnuTLS connection
2294
1238
try:
2295
1239
session.handshake()
2296
except gnutls.Error as error:
1240
except gnutls.errors.GNUTLSError as error:
2297
1241
logger.warning("Handshake failed: %s", error)
2298
1242
# Do not run session.bye() here: the session is not
2299
1243
# established. Just abandon the request.
2302
1246
2303
1247
approval_required = False
2304
1248
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,
1249
try:
1250
fpr = self.fingerprint(self.peer_certificate
1251
(session))
1252
except (TypeError,
1253
gnutls.errors.GNUTLSError) as error:
1254
logger.warning("Bad certificate: %s", error)
1255
return
1256
logger.debug("Fingerprint: %s", fpr)
1257
1258
try:
1259
client = ProxyClient(child_pipe, fpr,
2327
1260
self.client_address)
2328
1261
except KeyError:
2329
1262
return
2330
1263
2331
1264
if client.approval_delay:
2332
1265
delay = client.approval_delay
2333
1266
client.approvals_pending += 1
2334
1267
approval_required = True
2335
1268
2336
1269
while True:
2337
1270
if not client.enabled:
2338
1271
logger.info("Client %s is disabled",
2339
client.name)
1272
client.name)
2340
1273
if self.server.use_dbus:
2341
1274
# Emit D-Bus signal
2342
client.Rejected("Disabled")
1275
client.Rejected("Disabled")
2343
1276
return
2344
2345
if client.approved or not client.approval_delay:
2346
# We are approved or approval is disabled
1277
1278
if client._approved or not client.approval_delay:
1279
#We are approved or approval is disabled
2347
1280
break
2348
elif client.approved is None:
1281
elif client._approved is None:
2349
1282
logger.info("Client %s needs approval",
2350
1283
client.name)
2351
1284
if self.server.use_dbus:
2352
1285
# Emit D-Bus signal
2353
1286
client.NeedApproval(
2354
client.approval_delay.total_seconds()
2355
* 1000, client.approved_by_default)
1287
client.approval_delay_milliseconds(),
1288
client.approved_by_default)
2356
1289
else:
2357
1290
logger.warning("Client %s was not approved",
2358
1291
client.name)
2360
1293
# Emit D-Bus signal
2361
1294
client.Rejected("Denied")
2362
1295
return
2363
2364
# wait until timeout or approved
1296
1297
#wait until timeout or approved
1298
#x = float(client._timedelta_to_milliseconds(delay))
2365
1299
time = datetime.datetime.now()
2366
1300
client.changedstate.acquire()
2367
client.changedstate.wait(delay.total_seconds())
1301
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2368
1302
client.changedstate.release()
2369
1303
time2 = datetime.datetime.now()
2370
1304
if (time2 - time) >= delay:
2380
1314
break
2381
1315
else:
2382
1316
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
1317
1318
sent_size = 0
1319
while sent_size < len(client.secret):
1320
try:
1321
sent = session.send(client.secret[sent_size:])
1322
except gnutls.errors.GNUTLSError as error:
1323
logger.warning("gnutls send failed")
1324
return
1325
logger.debug("Sent: %d, remaining: %d",
1326
sent, len(client.secret)
1327
- (sent_size + sent))
1328
sent_size += sent
2390
1329
2391
1330
logger.info("Sending secret to %s", client.name)
2392
# bump the timeout using extended_timeout
2393
client.bump_timeout(client.extended_timeout)
1331
# bump the timeout as if seen
1332
client.checked_ok()
2394
1333
if self.server.use_dbus:
2395
1334
# Emit D-Bus signal
2396
1335
client.GotSecret()
2397
1336
2398
1337
finally:
2399
1338
if approval_required:
2400
1339
client.approvals_pending -= 1
2401
1340
try:
2402
1341
session.bye()
2403
except gnutls.Error as error:
2404
logger.warning("GnuTLS bye failed",
2405
exc_info=error)
2406
1342
except gnutls.errors.GNUTLSError as error:
1343
logger.warning("GnuTLS bye failed")
1344
2407
1345
@staticmethod
2408
1346
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""
1347
"Return the peer's OpenPGP certificate as a bytestring"
1348
# If not an OpenPGP certificate...
1349
if (gnutls.library.functions
1350
.gnutls_certificate_type_get(session._c_object)
1351
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1352
# ...do the normal thing
1353
return session.peer_certificate
2425
1354
list_size = ctypes.c_uint(1)
2426
cert_list = (gnutls.certificate_get_peers
1355
cert_list = (gnutls.library.functions
1356
.gnutls_certificate_get_peers
2427
1357
(session._c_object, ctypes.byref(list_size)))
2428
1358
if not bool(cert_list) and list_size.value != 0:
2429
raise gnutls.Error("error getting peer certificate")
1359
raise gnutls.errors.GNUTLSError("error getting peer"
1360
" certificate")
2430
1361
if list_size.value == 0:
2431
1362
return None
2432
1363
cert = cert_list[0]
2433
1364
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
1365
2469
1366
@staticmethod
2470
1367
def fingerprint(openpgp):
2471
1368
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2472
1369
# 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)))
1370
datum = (gnutls.library.types
1371
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1372
ctypes.POINTER
1373
(ctypes.c_ubyte)),
1374
ctypes.c_uint(len(openpgp))))
2477
1375
# New empty GnuTLS certificate
2478
crt = gnutls.openpgp_crt_t()
2479
gnutls.openpgp_crt_init(ctypes.byref(crt))
1376
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1377
(gnutls.library.functions
1378
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2480
1379
# Import the OpenPGP public key into the certificate
2481
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2482
gnutls.OPENPGP_FMT_RAW)
1380
(gnutls.library.functions
1381
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1382
gnutls.library.constants
1383
.GNUTLS_OPENPGP_FMT_RAW))
2483
1384
# Verify the self signature in the key
2484
1385
crtverify = ctypes.c_uint()
2485
gnutls.openpgp_crt_verify_self(crt, 0,
2486
ctypes.byref(crtverify))
1386
(gnutls.library.functions
1387
.gnutls_openpgp_crt_verify_self(crt, 0,
1388
ctypes.byref(crtverify)))
2487
1389
if crtverify.value != 0:
2488
gnutls.openpgp_crt_deinit(crt)
2489
raise gnutls.CertificateSecurityError(code
2490
=crtverify.value)
1390
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1391
raise (gnutls.errors.CertificateSecurityError
1392
("Verify failed"))
2491
1393
# New buffer for the fingerprint
2492
1394
buf = ctypes.create_string_buffer(20)
2493
1395
buf_len = ctypes.c_size_t()
2494
1396
# Get the fingerprint from the certificate into the buffer
2495
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2496
ctypes.byref(buf_len))
1397
(gnutls.library.functions
1398
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1399
ctypes.byref(buf_len)))
2497
1400
# Deinit the certificate
2498
gnutls.openpgp_crt_deinit(crt)
1401
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2499
1402
# Convert the buffer to a Python bytestring
2500
1403
fpr = ctypes.string_at(buf, buf_len.value)
2501
1404
# Convert the bytestring to hexadecimal notation
2502
hex_fpr = binascii.hexlify(fpr).upper()
1405
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2503
1406
return hex_fpr
2504
1407
2505
1408
2506
class MultiprocessingMixIn:
1409
class MultiprocessingMixIn(object):
2507
1410
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2508
2509
1411
def sub_process_main(self, request, address):
2510
1412
try:
2511
1413
self.finish_request(request, address)
2512
except Exception:
1414
except:
2513
1415
self.handle_error(request, address)
2514
1416
self.close_request(request)
2515
1417
2516
1418
def process_request(self, request, address):
2517
1419
"""Start a new process to process the request."""
2518
proc = multiprocessing.Process(target=self.sub_process_main,
2519
args=(request, address))
2520
proc.start()
2521
return proc
2522
2523
2524
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1420
multiprocessing.Process(target = self.sub_process_main,
1421
args = (request, address)).start()
1422
1423
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2525
1424
""" adds a pipe to the MixIn """
2526
2527
1425
def process_request(self, request, client_address):
2528
1426
"""Overrides and wraps the original process_request().
2529
1427
2530
1428
This function creates a new pipe in self.pipe
2531
1429
"""
2532
1430
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2533
1431
2534
proc = MultiprocessingMixIn.process_request(self, request,
2535
client_address)
1432
super(MultiprocessingMixInWithPipe,
1433
self).process_request(request, client_address)
2536
1434
self.child_pipe.close()
2537
self.add_pipe(parent_pipe, proc)
1435
self.add_pipe(parent_pipe)
2538
1436
2539
def add_pipe(self, parent_pipe, proc):
1437
def add_pipe(self, parent_pipe):
2540
1438
"""Dummy function; override as necessary"""
2541
raise NotImplementedError()
2542
1439
raise NotImplementedError
2543
1440
2544
1441
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2545
socketserver.TCPServer):
1442
socketserver.TCPServer, object):
2546
1443
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2547
1444
2548
1445
Attributes:
2549
1446
enabled: Boolean; whether this server is activated yet
2550
1447
interface: None or a network interface name (string)
2551
1448
use_ipv6: Boolean; to use IPv6 or not
2552
1449
"""
2553
2554
1450
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
"""
1451
interface=None, use_ipv6=True):
2561
1452
self.interface = interface
2562
1453
if use_ipv6:
2563
1454
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
1455
socketserver.TCPServer.__init__(self, server_address,
2592
1456
RequestHandlerClass)
2593
2594
1457
def server_bind(self):
2595
1458
"""This overrides the normal server_bind() function
2596
1459
to bind to an interface if one was specified, and also NOT to
2597
1460
bind to an address or port if they were not specified."""
2598
global SO_BINDTODEVICE
2599
1461
if self.interface is not None:
2600
1462
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
1463
logger.error("SO_BINDTODEVICE does not exist;"
1464
" cannot bind to interface %s",
1465
self.interface)
1466
else:
1467
try:
1468
self.socket.setsockopt(socket.SOL_SOCKET,
1469
SO_BINDTODEVICE,
1470
str(self.interface
1471
+ '\0'))
1472
except socket.error as error:
1473
if error[0] == errno.EPERM:
1474
logger.error("No permission to"
1475
" bind to interface %s",
1476
self.interface)
1477
elif error[0] == errno.ENOPROTOOPT:
1478
logger.error("SO_BINDTODEVICE not available;"
1479
" cannot bind to interface %s",
1480
self.interface)
1481
else:
1482
raise
2622
1483
# Only bind(2) the socket if we really need to.
2623
1484
if self.server_address[0] or self.server_address[1]:
2624
if self.server_address[1]:
2625
self.allow_reuse_address = True
2626
1485
if not self.server_address[0]:
2627
1486
if self.address_family == socket.AF_INET6:
2628
any_address = "::" # in6addr_any
1487
any_address = "::" # in6addr_any
2629
1488
else:
2630
any_address = "0.0.0.0" # INADDR_ANY
1489
any_address = socket.INADDR_ANY
2631
1490
self.server_address = (any_address,
2632
1491
self.server_address[1])
2633
1492
elif not self.server_address[1]:
2634
self.server_address = (self.server_address[0], 0)
1493
self.server_address = (self.server_address[0],
1494
0)
2635
1495
# if self.interface:
2636
1496
# self.server_address = (self.server_address[0],
2637
1497
# 0, # port
2643
1503
2644
1504
class MandosServer(IPv6_TCPServer):
2645
1505
"""Mandos server.
2646
1506
2647
1507
Attributes:
2648
1508
clients: set of Client objects
2649
1509
gnutls_priority GnuTLS priority string
2650
1510
use_dbus: Boolean; to emit D-Bus signals or not
2651
2652
Assumes a GLib.MainLoop event loop.
1511
1512
Assumes a gobject.MainLoop event loop.
2653
1513
"""
2654
2655
1514
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):
1515
interface=None, use_ipv6=True, clients=None,
1516
gnutls_priority=None, use_dbus=True):
2662
1517
self.enabled = False
2663
1518
self.clients = clients
2664
1519
if self.clients is None:
2665
self.clients = {}
1520
self.clients = set()
2666
1521
self.use_dbus = use_dbus
2667
1522
self.gnutls_priority = gnutls_priority
2668
1523
IPv6_TCPServer.__init__(self, server_address,
2669
1524
RequestHandlerClass,
2670
interface=interface,
2671
use_ipv6=use_ipv6,
2672
socketfd=socketfd)
2673
1525
interface = interface,
1526
use_ipv6 = use_ipv6)
2674
1527
def server_activate(self):
2675
1528
if self.enabled:
2676
1529
return socketserver.TCPServer.server_activate(self)
2677
2678
1530
def enable(self):
2679
1531
self.enabled = True
2680
2681
def add_pipe(self, parent_pipe, proc):
1532
def add_pipe(self, parent_pipe):
2682
1533
# 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,
1534
gobject.io_add_watch(parent_pipe.fileno(),
1535
gobject.IO_IN | gobject.IO_HUP,
1536
functools.partial(self.handle_ipc,
1537
parent_pipe = parent_pipe))
1538
1539
def handle_ipc(self, source, condition, parent_pipe=None,
2693
1540
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
2697
proc.join()
1541
condition_names = {
1542
gobject.IO_IN: "IN", # There is data to read.
1543
gobject.IO_OUT: "OUT", # Data can be written (without
1544
# blocking).
1545
gobject.IO_PRI: "PRI", # There is urgent data to read.
1546
gobject.IO_ERR: "ERR", # Error condition.
1547
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1548
# broken, usually for pipes and
1549
# sockets).
1550
}
1551
conditions_string = ' | '.join(name
1552
for cond, name in
1553
condition_names.iteritems()
1554
if cond & condition)
1555
# error or the other end of multiprocessing.Pipe has closed
1556
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2698
1557
return False
2699
1558
2700
1559
# Read a request from the child
2701
1560
request = parent_pipe.recv()
2702
1561
command = request[0]
2703
1562
2704
1563
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:
1564
fpr = request[1]
1565
address = request[2]
1566
1567
for c in self.clients:
1568
if c.fingerprint == fpr:
2716
1569
client = c
2717
1570
break
2718
1571
else:
2719
logger.info("Client not found for key ID: %s, address"
2720
": %s", key_id or fpr, address)
1572
logger.info("Client not found for fingerprint: %s, ad"
1573
"dress: %s", fpr, address)
2721
1574
if self.use_dbus:
2722
1575
# Emit D-Bus signal
2723
mandos_dbus_service.ClientNotFound(key_id or fpr,
2724
address[0])
1576
mandos_dbus_service.ClientNotFound(fpr, address[0])
2725
1577
parent_pipe.send(False)
2726
1578
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))
1579
1580
gobject.io_add_watch(parent_pipe.fileno(),
1581
gobject.IO_IN | gobject.IO_HUP,
1582
functools.partial(self.handle_ipc,
1583
parent_pipe = parent_pipe,
1584
client_object = client))
2735
1585
parent_pipe.send(True)
2736
# remove the old hook in favor of the new above hook on
2737
# same fileno
1586
# remove the old hook in favor of the new above hook on same fileno
2738
1587
return False
2739
1588
if command == 'funcall':
2740
1589
funcname = request[1]
2741
1590
args = request[2]
2742
1591
kwargs = request[3]
2743
2744
parent_pipe.send(('data', getattr(client_object,
2745
funcname)(*args,
2746
**kwargs)))
1592
1593
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2747
1594
2748
1595
if command == 'getattr':
2749
1596
attrname = request[1]
2750
if isinstance(client_object.__getattribute__(attrname),
2751
collections.Callable):
2752
parent_pipe.send(('function', ))
1597
if callable(client_object.__getattribute__(attrname)):
1598
parent_pipe.send(('function',))
2753
1599
else:
2754
parent_pipe.send((
2755
'data', client_object.__getattribute__(attrname)))
2756
1600
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1601
2757
1602
if command == 'setattr':
2758
1603
attrname = request[1]
2759
1604
value = request[2]
2762
1607
return True
2763
1608
2764
1609
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") == datetime.timedelta(7)
2769
True
2770
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2771
True
2772
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2773
True
2774
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2775
True
2776
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2777
True
2778
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2779
True
2780
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2781
True
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
1610
def string_to_delta(interval):
2865
1611
"""Parse a string and return a datetime.timedelta
2866
2867
>>> string_to_delta('7d') == datetime.timedelta(7)
2868
True
2869
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2870
True
2871
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2872
True
2873
>>> string_to_delta('24h') == datetime.timedelta(1)
2874
True
2875
>>> string_to_delta('1w') == datetime.timedelta(7)
2876
True
2877
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2878
True
1612
1613
>>> string_to_delta('7d')
1614
datetime.timedelta(7)
1615
>>> string_to_delta('60s')
1616
datetime.timedelta(0, 60)
1617
>>> string_to_delta('60m')
1618
datetime.timedelta(0, 3600)
1619
>>> string_to_delta('24h')
1620
datetime.timedelta(1)
1621
>>> string_to_delta('1w')
1622
datetime.timedelta(7)
1623
>>> string_to_delta('5m 30s')
1624
datetime.timedelta(0, 330)
2879
1625
"""
2880
2881
try:
2882
return rfc3339_duration_to_delta(interval)
2883
except ValueError:
2884
pass
2885
2886
1626
timevalue = datetime.timedelta(0)
2887
1627
for s in interval.split():
2888
1628
try:
2889
suffix = s[-1]
1629
suffix = unicode(s[-1])
2890
1630
value = int(s[:-1])
2891
1631
if suffix == "d":
2892
1632
delta = datetime.timedelta(value)
2899
1639
elif suffix == "w":
2900
1640
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2901
1641
else:
2902
raise ValueError("Unknown suffix {!r}".format(suffix))
2903
except IndexError as e:
1642
raise ValueError("Unknown suffix %r" % suffix)
1643
except (ValueError, IndexError) as e:
2904
1644
raise ValueError(*(e.args))
2905
1645
timevalue += delta
2906
1646
return timevalue
2907
1647
2908
1648
2909
def daemon(nochdir=False, noclose=False):
1649
def if_nametoindex(interface):
1650
"""Call the C function if_nametoindex(), or equivalent
1651
1652
Note: This function cannot accept a unicode string."""
1653
global if_nametoindex
1654
try:
1655
if_nametoindex = (ctypes.cdll.LoadLibrary
1656
(ctypes.util.find_library("c"))
1657
.if_nametoindex)
1658
except (OSError, AttributeError):
1659
logger.warning("Doing if_nametoindex the hard way")
1660
def if_nametoindex(interface):
1661
"Get an interface index the hard way, i.e. using fcntl()"
1662
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1663
with contextlib.closing(socket.socket()) as s:
1664
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1665
struct.pack(str("16s16x"),
1666
interface))
1667
interface_index = struct.unpack(str("I"),
1668
ifreq[16:20])[0]
1669
return interface_index
1670
return if_nametoindex(interface)
1671
1672
1673
def daemon(nochdir = False, noclose = False):
2910
1674
"""See daemon(3). Standard BSD Unix function.
2911
1675
2912
1676
This should really exist as os.daemon, but it doesn't (yet)."""
2913
1677
if os.fork():
2914
1678
sys.exit()
2919
1683
sys.exit()
2920
1684
if not noclose:
2921
1685
# Close all standard open file descriptors
2922
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1686
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2923
1687
if not stat.S_ISCHR(os.fstat(null).st_mode):
2924
1688
raise OSError(errno.ENODEV,
2925
"{} not a character device"
2926
.format(os.devnull))
1689
"%s not a character device"
1690
% os.path.devnull)
2927
1691
os.dup2(null, sys.stdin.fileno())
2928
1692
os.dup2(null, sys.stdout.fileno())
2929
1693
os.dup2(null, sys.stderr.fileno())
2932
1696
2933
1697
2934
1698
def main():
2935
1699
2936
1700
##################################################################
2937
1701
# Parsing of options, both command line and config file
2938
1702
2939
1703
parser = argparse.ArgumentParser()
2940
1704
parser.add_argument("-v", "--version", action="version",
2941
version="%(prog)s {}".format(version),
1705
version = "%%(prog)s %s" % version,
2942
1706
help="show version number and exit")
2943
1707
parser.add_argument("-i", "--interface", metavar="IF",
2944
1708
help="Bind to interface IF")
2950
1714
help="Run self-test")
2951
1715
parser.add_argument("--debug", action="store_true",
2952
1716
help="Debug mode; run in foreground and log"
2953
" to terminal", default=None)
1717
" to terminal")
2954
1718
parser.add_argument("--debuglevel", metavar="LEVEL",
2955
1719
help="Debug level for stdout output")
2956
1720
parser.add_argument("--priority", help="GnuTLS"
2963
1727
" files")
2964
1728
parser.add_argument("--no-dbus", action="store_false",
2965
1729
dest="use_dbus", help="Do not provide D-Bus"
2966
" system bus interface", default=None)
1730
" system bus interface")
2967
1731
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
1732
dest="use_ipv6", help="Do not use IPv6")
2984
1733
options = parser.parse_args()
2985
1734
1735
if options.check:
1736
import doctest
1737
doctest.testmod()
1738
sys.exit()
1739
2986
1740
# 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
1741
server_defaults = { "interface": "",
1742
"address": "",
1743
"port": "",
1744
"debug": "False",
1745
"priority":
1746
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1747
"servicename": "Mandos",
1748
"use_dbus": "True",
1749
"use_ipv6": "True",
1750
"debuglevel": "",
1751
}
1752
3010
1753
# Parse config file for server-global settings
3011
server_config = configparser.ConfigParser(server_defaults)
1754
server_config = configparser.SafeConfigParser(server_defaults)
3012
1755
del server_defaults
3013
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3014
# Convert the ConfigParser object to a dict
1756
server_config.read(os.path.join(options.configdir,
1757
"mandos.conf"))
1758
# Convert the SafeConfigParser object to a dict
3015
1759
server_settings = server_config.defaults()
3016
1760
# Use the appropriate methods on the non-string config options
3017
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3018
"foreground", "zeroconf"):
1761
for option in ("debug", "use_dbus", "use_ipv6"):
3019
1762
server_settings[option] = server_config.getboolean("DEFAULT",
3020
1763
option)
3021
1764
if server_settings["port"]:
3022
1765
server_settings["port"] = server_config.getint("DEFAULT",
3023
1766
"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
1767
del server_config
3034
1768
3035
1769
# Override the settings from the config file with command line
3036
1770
# options, if set.
3037
1771
for option in ("interface", "address", "port", "debug",
3038
"priority", "servicename", "configdir", "use_dbus",
3039
"use_ipv6", "debuglevel", "restore", "statedir",
3040
"socket", "foreground", "zeroconf"):
1772
"priority", "servicename", "configdir",
1773
"use_dbus", "use_ipv6", "debuglevel"):
3041
1774
value = getattr(options, option)
3042
1775
if value is not None:
3043
1776
server_settings[option] = value
3044
1777
del options
3045
1778
# Force all strings to be unicode
3046
1779
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
1780
if type(server_settings[option]) is str:
1781
server_settings[option] = unicode(server_settings[option])
3057
1782
# Now we have our good server settings in "server_settings"
3058
1783
3059
1784
##################################################################
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
1785
3066
1786
# For convenience
3067
1787
debug = server_settings["debug"]
3068
1788
debuglevel = server_settings["debuglevel"]
3069
1789
use_dbus = server_settings["use_dbus"]
3070
1790
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
1791
3085
1792
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
1793
syslogger.setFormatter(logging.Formatter
1794
('Mandos (%s) [%%(process)d]:'
1795
' %%(levelname)s: %%(message)s'
1796
% server_settings["servicename"]))
1797
3091
1798
# Parse config file with clients
3092
client_config = configparser.ConfigParser(Client.client_defaults)
1799
client_defaults = { "timeout": "1h",
1800
"interval": "5m",
1801
"checker": "fping -q -- %%(host)s",
1802
"host": "",
1803
"approval_delay": "0s",
1804
"approval_duration": "1s",
1805
}
1806
client_config = configparser.SafeConfigParser(client_defaults)
3093
1807
client_config.read(os.path.join(server_settings["configdir"],
3094
1808
"clients.conf"))
3095
1809
3096
1810
global mandos_dbus_service
3097
1811
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
1812
1813
tcp_server = MandosServer((server_settings["address"],
1814
server_settings["port"]),
1815
ClientHandler,
1816
interface=(server_settings["interface"]
1817
or None),
1818
use_ipv6=use_ipv6,
1819
gnutls_priority=
1820
server_settings["priority"],
1821
use_dbus=use_dbus)
1822
if not debug:
1823
pidfilename = "/var/run/mandos.pid"
1824
try:
1825
pidfile = open(pidfilename, "w")
1826
except IOError:
1827
logger.error("Could not open file %r", pidfilename)
1828
1829
try:
1830
uid = pwd.getpwnam("_mandos").pw_uid
1831
gid = pwd.getpwnam("_mandos").pw_gid
1832
except KeyError:
1833
try:
1834
uid = pwd.getpwnam("mandos").pw_uid
1835
gid = pwd.getpwnam("mandos").pw_gid
3128
1836
except KeyError:
3129
continue
3130
else:
3131
uid = 65534
3132
gid = 65534
1837
try:
1838
uid = pwd.getpwnam("nobody").pw_uid
1839
gid = pwd.getpwnam("nobody").pw_gid
1840
except KeyError:
1841
uid = 65534
1842
gid = 65534
3133
1843
try:
3134
1844
os.setgid(gid)
3135
1845
os.setuid(uid)
3136
if debug:
3137
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3138
gid))
3139
1846
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
1847
if error[0] != errno.EPERM:
1848
raise error
1849
1850
if not debug and not debuglevel:
1851
syslogger.setLevel(logging.WARNING)
1852
console.setLevel(logging.WARNING)
1853
if debuglevel:
1854
level = getattr(logging, debuglevel.upper())
1855
syslogger.setLevel(level)
1856
console.setLevel(level)
3144
1857
3145
1858
if debug:
3146
1859
# Enable all possible GnuTLS debugging
3147
1860
3148
1861
# "Use a log level over 10 to enable all debugging options."
3149
1862
# - GnuTLS manual
3150
gnutls.global_set_log_level(11)
3151
3152
@gnutls.log_func
1863
gnutls.library.functions.gnutls_global_set_log_level(11)
1864
1865
@gnutls.library.types.gnutls_log_func
3153
1866
def debug_gnutls(level, string):
3154
1867
logger.debug("GnuTLS: %s", string[:-1])
3155
3156
gnutls.global_set_log_function(debug_gnutls)
3157
1868
1869
(gnutls.library.functions
1870
.gnutls_global_set_log_function(debug_gnutls))
1871
3158
1872
# Redirect stdin so all checkers get /dev/null
3159
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1873
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3160
1874
os.dup2(null, sys.stdin.fileno())
3161
1875
if null > 2:
3162
1876
os.close(null)
3163
1877
else:
1878
# No console logging
1879
logger.removeHandler(console)
1880
3164
1881
# Need to fork before connecting to D-Bus
3165
if not foreground:
1882
if not debug:
3166
1883
# Close all input and output, do double fork, etc.
3167
1884
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
1885
3174
1886
global main_loop
3175
1887
# From the Avahi example code
3176
DBusGMainLoop(set_as_default=True)
3177
main_loop = GLib.MainLoop()
1888
DBusGMainLoop(set_as_default=True )
1889
main_loop = gobject.MainLoop()
3178
1890
bus = dbus.SystemBus()
3179
1891
# End of Avahi example code
3180
1892
if use_dbus:
3181
1893
try:
3182
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)
1894
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1895
bus, do_not_queue=True)
1896
except dbus.exceptions.NameExistsException as e:
1897
logger.error(unicode(e) + ", disabling D-Bus")
3190
1898
use_dbus = False
3191
1899
server_settings["use_dbus"] = False
3192
1900
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
1901
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1902
service = AvahiService(name = server_settings["servicename"],
1903
servicetype = "_mandos._tcp",
1904
protocol = protocol, bus = bus)
1905
if server_settings["interface"]:
1906
service.interface = (if_nametoindex
1907
(str(server_settings["interface"])))
1908
3204
1909
global multiprocessing_manager
3205
1910
multiprocessing_manager = multiprocessing.Manager()
3206
1911
3207
1912
client_class = Client
3208
1913
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))
1914
client_class = functools.partial(ClientDBus, bus = bus)
1915
def client_config_items(config, section):
1916
special_settings = {
1917
"approved_by_default":
1918
lambda: config.getboolean(section,
1919
"approved_by_default"),
1920
}
1921
for name, value in config.items(section):
3341
1922
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
1923
yield (name, special_settings[name]())
1924
except KeyError:
1925
yield (name, value)
1926
1927
tcp_server.clients.update(set(
1928
client_class(name = section,
1929
config= dict(client_config_items(
1930
client_config, section)))
1931
for section in client_config.sections()))
3367
1932
if not tcp_server.clients:
3368
1933
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
1934
1935
if not debug:
1936
try:
1937
with pidfile:
1938
pid = os.getpid()
1939
pidfile.write(str(pid) + "\n".encode("utf-8"))
1940
del pidfile
1941
except IOError:
1942
logger.error("Could not write to file %r with PID %d",
1943
pidfilename, pid)
1944
except NameError:
1945
# "pidfile" was never created
1946
pass
3380
1947
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
1948
1949
signal.signal(signal.SIGINT, signal.SIG_IGN)
1950
1951
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1952
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1953
3386
1954
if use_dbus:
3387
3388
@alternate_dbus_interfaces(
3389
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3390
class MandosDBusService(DBusObjectWithObjectManager):
1955
class MandosDBusService(dbus.service.Object):
3391
1956
"""A D-Bus proxy object"""
3392
3393
1957
def __init__(self):
3394
1958
dbus.service.Object.__init__(self, bus, "/")
3395
3396
_interface = "se.recompile.Mandos"
3397
1959
_interface = "se.bsnet.fukt.Mandos"
1960
3398
1961
@dbus.service.signal(_interface, signature="o")
3399
1962
def ClientAdded(self, objpath):
3400
1963
"D-Bus signal"
3401
1964
pass
3402
1965
3403
1966
@dbus.service.signal(_interface, signature="ss")
3404
def ClientNotFound(self, key_id, address):
1967
def ClientNotFound(self, fingerprint, address):
3405
1968
"D-Bus signal"
3406
1969
pass
3407
3408
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3409
"true"})
1970
3410
1971
@dbus.service.signal(_interface, signature="os")
3411
1972
def ClientRemoved(self, objpath, name):
3412
1973
"D-Bus signal"
3413
1974
pass
3414
3415
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3416
"true"})
1975
3417
1976
@dbus.service.method(_interface, out_signature="ao")
3418
1977
def GetAllClients(self):
3419
1978
"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"})
1979
return dbus.Array(c.dbus_object_path
1980
for c in tcp_server.clients)
1981
3425
1982
@dbus.service.method(_interface,
3426
1983
out_signature="a{oa{sv}}")
3427
1984
def GetAllClientsWithProperties(self):
3428
1985
"D-Bus method"
3429
1986
return dbus.Dictionary(
3430
{c.dbus_object_path: c.GetAll(
3431
"se.recompile.Mandos.Client")
3432
for c in tcp_server.clients.values()},
1987
((c.dbus_object_path, c.GetAll(""))
1988
for c in tcp_server.clients),
3433
1989
signature="oa{sv}")
3434
1990
3435
1991
@dbus.service.method(_interface, in_signature="o")
3436
1992
def RemoveClient(self, object_path):
3437
1993
"D-Bus method"
3438
for c in tcp_server.clients.values():
1994
for c in tcp_server.clients:
3439
1995
if c.dbus_object_path == object_path:
3440
del tcp_server.clients[c.name]
1996
tcp_server.clients.remove(c)
3441
1997
c.remove_from_connection()
3442
# Don't signal the disabling
1998
# Don't signal anything except ClientRemoved
3443
1999
c.disable(quiet=True)
3444
# Emit D-Bus signal for removal
3445
self.client_removed_signal(c)
2000
# Emit D-Bus signal
2001
self.ClientRemoved(object_path, c.name)
3446
2002
return
3447
2003
raise KeyError(object_path)
3448
2004
3449
2005
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
2006
3487
2007
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
2008
3494
2009
def cleanup():
3495
2010
"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
2011
service.cleanup()
2012
3558
2013
while tcp_server.clients:
3559
name, client = tcp_server.clients.popitem()
2014
client = tcp_server.clients.pop()
3560
2015
if use_dbus:
3561
2016
client.remove_from_connection()
3562
# Don't signal the disabling
2017
client.disable_hook = None
2018
# Don't signal anything except ClientRemoved
3563
2019
client.disable(quiet=True)
3564
# Emit D-Bus signal for removal
3565
2020
if use_dbus:
3566
mandos_dbus_service.client_removed_signal(client)
3567
client_settings.clear()
3568
2021
# Emit D-Bus signal
2022
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2023
client.name)
2024
3569
2025
atexit.register(cleanup)
3570
3571
for client in tcp_server.clients.values():
2026
2027
for client in tcp_server.clients:
3572
2028
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
2029
# Emit D-Bus signal
2030
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2031
client.enable()
2032
3579
2033
tcp_server.enable()
3580
2034
tcp_server.server_activate()
3581
2035
3582
2036
# Find out what port we got
3583
if zeroconf:
3584
service.port = tcp_server.socket.getsockname()[1]
2037
service.port = tcp_server.socket.getsockname()[1]
3585
2038
if use_ipv6:
3586
2039
logger.info("Now listening on address %r, port %d,"
3587
" flowinfo %d, scope_id %d",
3588
*tcp_server.socket.getsockname())
2040
" flowinfo %d, scope_id %d"
2041
% tcp_server.socket.getsockname())
3589
2042
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
2043
logger.info("Now listening on address %r, port %d"
2044
% tcp_server.socket.getsockname())
2045
2046
#service.interface = tcp_server.socket.getsockname()[3]
2047
3595
2048
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
2049
# From the Avahi example code
2050
try:
2051
service.activate()
2052
except dbus.exceptions.DBusException as error:
2053
logger.critical("DBusException: %s", error)
2054
cleanup()
2055
sys.exit(1)
2056
# End of Avahi example code
2057
2058
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2059
lambda *args, **kwargs:
2060
(tcp_server.handle_request
2061
(*args[2:], **kwargs) or True))
2062
3612
2063
logger.debug("Starting main loop")
3613
2064
main_loop.run()
3614
2065
except AvahiError as error:
3615
logger.critical("Avahi Error", exc_info=error)
2066
logger.critical("AvahiError: %s", error)
3616
2067
cleanup()
3617
2068
sys.exit(1)
3618
2069
except KeyboardInterrupt:
3623
2074
# Must run before the D-Bus bus name gets deregistered
3624
2075
cleanup()
3625
2076
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
3643
2077
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()
2078
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0