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- Committer: teddy at bsnet
- Date: 2011-07-31 13:05:34 UTC
- Revision ID: teddy@fukt.bsnet.se-20110731130534-v4d9hsvek80ms9uo
* plugins.d/mandos-client.c (avahi_loop_with_timeout): Fix warning.
(main): Disallow "--retry" arguments < 0. Allow brackets [] around
IPv6 addresses, as recommended by RFC 5952. Bug fix: When
using --connect, really use retry_interval, not 1 second.
* plugins.d/mandos-client.xml (DESCRIPTION): Add retry info.
(--retry): Remove repeated word.
(main): Disallow "--retry" arguments < 0. Allow brackets [] around
IPv6 addresses, as recommended by RFC 5952. Bug fix: When
using --connect, really use retry_interval, not 1 second.
* plugins.d/mandos-client.xml (DESCRIPTION): Add retry info.
(--retry): Remove repeated word.
- 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
#!/usr/bin/python3 -bI
2
# -*- coding: utf-8; lexical-binding: t -*-
3
#
1
#!/usr/bin/python
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 © 2008-2022 Teddy Hogeborn
15
# Copyright © 2008-2022 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
#
33
34
34
from __future__ import (division, absolute_import, print_function,
35
35
unicode_literals)
36
36
37
try:
38
from future_builtins import *
39
except ImportError:
40
pass
41
42
import sys
43
import unittest
37
import SocketServer as socketserver
38
import socket
44
39
import argparse
45
import logging
46
import os
47
try:
48
import SocketServer as socketserver
49
except ImportError:
50
import socketserver
51
import socket
52
40
import datetime
53
41
import errno
54
try:
55
import ConfigParser as configparser
56
except ImportError:
57
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
49
import sys
58
50
import re
51
import os
59
52
import signal
60
53
import subprocess
61
54
import atexit
62
55
import stat
56
import logging
63
57
import logging.handlers
64
58
import pwd
65
59
import contextlib
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 random
81
import shlex
82
65
83
66
import dbus
84
67
import dbus.service
85
import gi
86
from gi.repository import GLib
68
import gobject
69
import avahi
87
70
from dbus.mainloop.glib import DBusGMainLoop
88
71
import ctypes
89
72
import ctypes.util
90
73
import xml.dom.minidom
91
74
import inspect
92
75
93
if sys.version_info.major == 2:
94
__metaclass__ = type
95
str = unicode
96
input = raw_input
97
98
# Add collections.abc.Callable if it does not exist
99
try:
100
collections.abc.Callable
101
except AttributeError:
102
class abc:
103
Callable = collections.Callable
104
collections.abc = abc
105
del abc
106
107
# Add shlex.quote if it does not exist
108
try:
109
shlex.quote
110
except AttributeError:
111
shlex.quote = re.escape
112
113
# Show warnings by default
114
if not sys.warnoptions:
115
import warnings
116
warnings.simplefilter("default")
117
118
# Try to find the value of SO_BINDTODEVICE:
119
try:
120
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
121
# newer, and it is also the most natural place for it:
76
try:
122
77
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
123
78
except AttributeError:
124
79
try:
125
# This is where SO_BINDTODEVICE was up to and including Python
126
# 2.6, and also 3.2:
127
80
from IN import SO_BINDTODEVICE
128
81
except ImportError:
129
# In Python 2.7 it seems to have been removed entirely.
130
# Try running the C preprocessor:
131
try:
132
cc = subprocess.Popen(["cc", "--language=c", "-E",
133
"/dev/stdin"],
134
stdin=subprocess.PIPE,
135
stdout=subprocess.PIPE)
136
stdout = cc.communicate(
137
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
138
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
139
except (OSError, ValueError, IndexError):
140
# No value found
141
SO_BINDTODEVICE = None
142
143
if sys.version_info < (3, 2):
144
configparser.Configparser = configparser.SafeConfigParser
145
146
version = "1.8.15"
147
stored_state_file = "clients.pickle"
148
149
log = logging.getLogger(os.path.basename(sys.argv[0]))
150
logging.captureWarnings(True) # Show warnings via the logging system
151
syslogger = None
152
153
try:
154
if_nametoindex = ctypes.cdll.LoadLibrary(
155
ctypes.util.find_library("c")).if_nametoindex
156
except (OSError, AttributeError):
157
158
def if_nametoindex(interface):
159
"Get an interface index the hard way, i.e. using fcntl()"
160
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
161
with contextlib.closing(socket.socket()) as s:
162
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
163
struct.pack(b"16s16x", interface))
164
interface_index = struct.unpack("I", ifreq[16:20])[0]
165
return interface_index
166
167
168
def copy_function(func):
169
"""Make a copy of a function"""
170
if sys.version_info.major == 2:
171
return types.FunctionType(func.func_code,
172
func.func_globals,
173
func.func_name,
174
func.func_defaults,
175
func.func_closure)
176
else:
177
return types.FunctionType(func.__code__,
178
func.__globals__,
179
func.__name__,
180
func.__defaults__,
181
func.__closure__)
182
183
184
def initlogger(debug, level=logging.WARNING):
185
"""init logger and add loglevel"""
186
187
global syslogger
188
syslogger = (logging.handlers.SysLogHandler(
189
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
190
address="/dev/log"))
191
syslogger.setFormatter(logging.Formatter
192
("Mandos [%(process)d]: %(levelname)s:"
193
" %(message)s"))
194
log.addHandler(syslogger)
195
196
if debug:
197
console = logging.StreamHandler()
198
console.setFormatter(logging.Formatter("%(asctime)s %(name)s"
199
" [%(process)d]:"
200
" %(levelname)s:"
201
" %(message)s"))
202
log.addHandler(console)
203
log.setLevel(level)
204
205
206
class PGPError(Exception):
207
"""Exception if encryption/decryption fails"""
208
pass
209
210
211
class PGPEngine:
212
"""A simple class for OpenPGP symmetric encryption & decryption"""
213
214
def __init__(self):
215
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
216
self.gpg = "gpg"
217
try:
218
output = subprocess.check_output(["gpgconf"])
219
for line in output.splitlines():
220
name, text, path = line.split(b":")
221
if name == b"gpg":
222
self.gpg = path
223
break
224
except OSError as e:
225
if e.errno != errno.ENOENT:
226
raise
227
self.gnupgargs = ["--batch",
228
"--homedir", self.tempdir,
229
"--force-mdc",
230
"--quiet"]
231
# Only GPG version 1 has the --no-use-agent option.
232
if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
233
self.gnupgargs.append("--no-use-agent")
234
235
def __enter__(self):
236
return self
237
238
def __exit__(self, exc_type, exc_value, traceback):
239
self._cleanup()
240
return False
241
242
def __del__(self):
243
self._cleanup()
244
245
def _cleanup(self):
246
if self.tempdir is not None:
247
# Delete contents of tempdir
248
for root, dirs, files in os.walk(self.tempdir,
249
topdown=False):
250
for filename in files:
251
os.remove(os.path.join(root, filename))
252
for dirname in dirs:
253
os.rmdir(os.path.join(root, dirname))
254
# Remove tempdir
255
os.rmdir(self.tempdir)
256
self.tempdir = None
257
258
def password_encode(self, password):
259
# Passphrase can not be empty and can not contain newlines or
260
# NUL bytes. So we prefix it and hex encode it.
261
encoded = b"mandos" + binascii.hexlify(password)
262
if len(encoded) > 2048:
263
# GnuPG can't handle long passwords, so encode differently
264
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
265
.replace(b"\n", b"\\n")
266
.replace(b"\0", b"\\x00"))
267
return encoded
268
269
def encrypt(self, data, password):
270
passphrase = self.password_encode(password)
271
with tempfile.NamedTemporaryFile(
272
dir=self.tempdir) as passfile:
273
passfile.write(passphrase)
274
passfile.flush()
275
proc = subprocess.Popen([self.gpg, "--symmetric",
276
"--passphrase-file",
277
passfile.name]
278
+ self.gnupgargs,
279
stdin=subprocess.PIPE,
280
stdout=subprocess.PIPE,
281
stderr=subprocess.PIPE)
282
ciphertext, err = proc.communicate(input=data)
283
if proc.returncode != 0:
284
raise PGPError(err)
285
return ciphertext
286
287
def decrypt(self, data, password):
288
passphrase = self.password_encode(password)
289
with tempfile.NamedTemporaryFile(
290
dir=self.tempdir) as passfile:
291
passfile.write(passphrase)
292
passfile.flush()
293
proc = subprocess.Popen([self.gpg, "--decrypt",
294
"--passphrase-file",
295
passfile.name]
296
+ self.gnupgargs,
297
stdin=subprocess.PIPE,
298
stdout=subprocess.PIPE,
299
stderr=subprocess.PIPE)
300
decrypted_plaintext, err = proc.communicate(input=data)
301
if proc.returncode != 0:
302
raise PGPError(err)
303
return decrypted_plaintext
304
305
306
# Pretend that we have an Avahi module
307
class avahi:
308
"""This isn't so much a class as it is a module-like namespace."""
309
IF_UNSPEC = -1 # avahi-common/address.h
310
PROTO_UNSPEC = -1 # avahi-common/address.h
311
PROTO_INET = 0 # avahi-common/address.h
312
PROTO_INET6 = 1 # avahi-common/address.h
313
DBUS_NAME = "org.freedesktop.Avahi"
314
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
315
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
316
DBUS_PATH_SERVER = "/"
317
318
@staticmethod
319
def string_array_to_txt_array(t):
320
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
321
for s in t), signature="ay")
322
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
323
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
324
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
325
SERVER_INVALID = 0 # avahi-common/defs.h
326
SERVER_REGISTERING = 1 # avahi-common/defs.h
327
SERVER_RUNNING = 2 # avahi-common/defs.h
328
SERVER_COLLISION = 3 # avahi-common/defs.h
329
SERVER_FAILURE = 4 # avahi-common/defs.h
330
82
SO_BINDTODEVICE = None
83
84
85
version = "1.3.1"
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)
331
102
332
103
class AvahiError(Exception):
333
104
def __init__(self, value, *args, **kwargs):
334
105
self.value = value
335
return super(AvahiError, self).__init__(value, *args,
336
**kwargs)
337
106
super(AvahiError, self).__init__(value, *args, **kwargs)
107
def __unicode__(self):
108
return unicode(repr(self.value))
338
109
339
110
class AvahiServiceError(AvahiError):
340
111
pass
341
112
342
343
113
class AvahiGroupError(AvahiError):
344
114
pass
345
115
346
116
347
class AvahiService:
117
class AvahiService(object):
348
118
"""An Avahi (Zeroconf) service.
349
119
350
120
Attributes:
351
121
interface: integer; avahi.IF_UNSPEC or an interface index.
352
122
Used to optionally bind to the specified interface.
353
name: string; Example: "Mandos"
354
type: string; Example: "_mandos._tcp".
355
See <https://www.iana.org/assignments/service-names-port-numbers>
123
name: string; Example: 'Mandos'
124
type: string; Example: '_mandos._tcp'.
125
See <http://www.dns-sd.org/ServiceTypes.html>
356
126
port: integer; what port to announce
357
127
TXT: list of strings; TXT record for the service
358
128
domain: string; Domain to publish on, default to .local if empty.
364
134
server: D-Bus Server
365
135
bus: dbus.SystemBus()
366
136
"""
367
368
def __init__(self,
369
interface=avahi.IF_UNSPEC,
370
name=None,
371
servicetype=None,
372
port=None,
373
TXT=None,
374
domain="",
375
host="",
376
max_renames=32768,
377
protocol=avahi.PROTO_UNSPEC,
378
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):
379
141
self.interface = interface
380
142
self.name = name
381
143
self.type = servicetype
390
152
self.server = None
391
153
self.bus = bus
392
154
self.entry_group_state_changed_match = None
393
394
def rename(self, remove=True):
155
def rename(self):
395
156
"""Derived from the Avahi example code"""
396
157
if self.rename_count >= self.max_renames:
397
log.critical("No suitable Zeroconf service name found"
398
" after %i retries, exiting.",
399
self.rename_count)
158
logger.critical("No suitable Zeroconf service name found"
159
" after %i retries, exiting.",
160
self.rename_count)
400
161
raise AvahiServiceError("Too many renames")
401
self.name = str(
402
self.server.GetAlternativeServiceName(self.name))
162
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
163
logger.info("Changing Zeroconf service name to %r ...",
164
self.name)
165
syslogger.setFormatter(logging.Formatter
166
('Mandos (%s) [%%(process)d]:'
167
' %%(levelname)s: %%(message)s'
168
% self.name))
169
self.remove()
170
try:
171
self.add()
172
except dbus.exceptions.DBusException as error:
173
logger.critical("DBusException: %s", error)
174
self.cleanup()
175
os._exit(1)
403
176
self.rename_count += 1
404
log.info("Changing Zeroconf service name to %r ...",
405
self.name)
406
if remove:
407
self.remove()
408
try:
409
self.add()
410
except dbus.exceptions.DBusException as error:
411
if (error.get_dbus_name()
412
== "org.freedesktop.Avahi.CollisionError"):
413
log.info("Local Zeroconf service name collision.")
414
return self.rename(remove=False)
415
else:
416
log.critical("D-Bus Exception", exc_info=error)
417
self.cleanup()
418
os._exit(1)
419
420
177
def remove(self):
421
178
"""Derived from the Avahi example code"""
422
179
if self.entry_group_state_changed_match is not None:
424
181
self.entry_group_state_changed_match = None
425
182
if self.group is not None:
426
183
self.group.Reset()
427
428
184
def add(self):
429
185
"""Derived from the Avahi example code"""
430
186
self.remove()
435
191
avahi.DBUS_INTERFACE_ENTRY_GROUP)
436
192
self.entry_group_state_changed_match = (
437
193
self.group.connect_to_signal(
438
"StateChanged", self.entry_group_state_changed))
439
log.debug("Adding Zeroconf service '%s' of type '%s' ...",
440
self.name, self.type)
194
'StateChanged', self .entry_group_state_changed))
195
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
196
self.name, self.type)
441
197
self.group.AddService(
442
198
self.interface,
443
199
self.protocol,
447
203
dbus.UInt16(self.port),
448
204
avahi.string_array_to_txt_array(self.TXT))
449
205
self.group.Commit()
450
451
206
def entry_group_state_changed(self, state, error):
452
207
"""Derived from the Avahi example code"""
453
log.debug("Avahi entry group state change: %i", state)
454
208
logger.debug("Avahi entry group state change: %i", state)
209
455
210
if state == avahi.ENTRY_GROUP_ESTABLISHED:
456
log.debug("Zeroconf service established.")
211
logger.debug("Zeroconf service established.")
457
212
elif state == avahi.ENTRY_GROUP_COLLISION:
458
log.info("Zeroconf service name collision.")
213
logger.info("Zeroconf service name collision.")
459
214
self.rename()
460
215
elif state == avahi.ENTRY_GROUP_FAILURE:
461
log.critical("Avahi: Error in group state changed %s",
462
str(error))
463
raise AvahiGroupError("State changed: {!s}".format(error))
464
216
logger.critical("Avahi: Error in group state changed %s",
217
unicode(error))
218
raise AvahiGroupError("State changed: %s"
219
% unicode(error))
465
220
def cleanup(self):
466
221
"""Derived from the Avahi example code"""
467
222
if self.group is not None:
468
223
try:
469
224
self.group.Free()
470
225
except (dbus.exceptions.UnknownMethodException,
471
dbus.exceptions.DBusException):
226
dbus.exceptions.DBusException) as e:
472
227
pass
473
228
self.group = None
474
229
self.remove()
475
476
230
def server_state_changed(self, state, error=None):
477
231
"""Derived from the Avahi example code"""
478
log.debug("Avahi server state change: %i", state)
479
bad_states = {
480
avahi.SERVER_INVALID: "Zeroconf server invalid",
481
avahi.SERVER_REGISTERING: None,
482
avahi.SERVER_COLLISION: "Zeroconf server name collision",
483
avahi.SERVER_FAILURE: "Zeroconf server failure",
484
}
232
logger.debug("Avahi server state change: %i", state)
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" }
485
240
if state in bad_states:
486
241
if bad_states[state] is not None:
487
242
if error is None:
488
log.error(bad_states[state])
243
logger.error(bad_states[state])
489
244
else:
490
log.error(bad_states[state] + ": %r", error)
245
logger.error(bad_states[state] + ": %r", error)
491
246
self.cleanup()
492
247
elif state == avahi.SERVER_RUNNING:
493
try:
494
self.add()
495
except dbus.exceptions.DBusException as error:
496
if (error.get_dbus_name()
497
== "org.freedesktop.Avahi.CollisionError"):
498
log.info("Local Zeroconf service name collision.")
499
return self.rename(remove=False)
500
else:
501
log.critical("D-Bus Exception", exc_info=error)
502
self.cleanup()
503
os._exit(1)
248
self.add()
504
249
else:
505
250
if error is None:
506
log.debug("Unknown state: %r", state)
251
logger.debug("Unknown state: %r", state)
507
252
else:
508
log.debug("Unknown state: %r: %r", state, error)
509
253
logger.debug("Unknown state: %r: %r", state, error)
510
254
def activate(self):
511
255
"""Derived from the Avahi example code"""
512
256
if self.server is None:
516
260
follow_name_owner_changes=True),
517
261
avahi.DBUS_INTERFACE_SERVER)
518
262
self.server.connect_to_signal("StateChanged",
519
self.server_state_changed)
263
self.server_state_changed)
520
264
self.server_state_changed(self.server.GetState())
521
265
522
266
523
class AvahiServiceToSyslog(AvahiService):
524
def rename(self, *args, **kwargs):
525
"""Add the new name to the syslog messages"""
526
ret = super(AvahiServiceToSyslog, self).rename(*args,
527
**kwargs)
528
syslogger.setFormatter(logging.Formatter(
529
"Mandos ({}) [%(process)d]: %(levelname)s: %(message)s"
530
.format(self.name)))
531
return ret
532
533
534
# Pretend that we have a GnuTLS module
535
class gnutls:
536
"""This isn't so much a class as it is a module-like namespace."""
537
538
library = ctypes.util.find_library("gnutls")
539
if library is None:
540
library = ctypes.util.find_library("gnutls-deb0")
541
_library = ctypes.cdll.LoadLibrary(library)
542
del library
543
544
# Unless otherwise indicated, the constants and types below are
545
# all from the gnutls/gnutls.h C header file.
546
547
# Constants
548
E_SUCCESS = 0
549
E_INTERRUPTED = -52
550
E_AGAIN = -28
551
CRT_OPENPGP = 2
552
CRT_RAWPK = 3
553
CLIENT = 2
554
SHUT_RDWR = 0
555
CRD_CERTIFICATE = 1
556
E_NO_CERTIFICATE_FOUND = -49
557
X509_FMT_DER = 0
558
NO_TICKETS = 1<<10
559
ENABLE_RAWPK = 1<<18
560
CTYPE_PEERS = 3
561
KEYID_USE_SHA256 = 1 # gnutls/x509.h
562
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
563
564
# Types
565
class _session_int(ctypes.Structure):
566
_fields_ = []
567
session_t = ctypes.POINTER(_session_int)
568
569
class certificate_credentials_st(ctypes.Structure):
570
_fields_ = []
571
certificate_credentials_t = ctypes.POINTER(
572
certificate_credentials_st)
573
certificate_type_t = ctypes.c_int
574
575
class datum_t(ctypes.Structure):
576
_fields_ = [("data", ctypes.POINTER(ctypes.c_ubyte)),
577
("size", ctypes.c_uint)]
578
579
class _openpgp_crt_int(ctypes.Structure):
580
_fields_ = []
581
openpgp_crt_t = ctypes.POINTER(_openpgp_crt_int)
582
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
583
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
584
credentials_type_t = ctypes.c_int
585
transport_ptr_t = ctypes.c_void_p
586
close_request_t = ctypes.c_int
587
588
# Exceptions
589
class Error(Exception):
590
def __init__(self, message=None, code=None, args=()):
591
# Default usage is by a message string, but if a return
592
# code is passed, convert it to a string with
593
# gnutls.strerror()
594
self.code = code
595
if message is None and code is not None:
596
message = gnutls.strerror(code).decode(
597
"utf-8", errors="replace")
598
return super(gnutls.Error, self).__init__(
599
message, *args)
600
601
class CertificateSecurityError(Error):
602
pass
603
604
class PointerTo:
605
def __init__(self, cls):
606
self.cls = cls
607
608
def from_param(self, obj):
609
if not isinstance(obj, self.cls):
610
raise TypeError("Not of type {}: {!r}"
611
.format(self.cls.__name__, obj))
612
return ctypes.byref(obj.from_param(obj))
613
614
class CastToVoidPointer:
615
def __init__(self, cls):
616
self.cls = cls
617
618
def from_param(self, obj):
619
if not isinstance(obj, self.cls):
620
raise TypeError("Not of type {}: {!r}"
621
.format(self.cls.__name__, obj))
622
return ctypes.cast(obj.from_param(obj), ctypes.c_void_p)
623
624
class With_from_param:
625
@classmethod
626
def from_param(cls, obj):
627
return obj._as_parameter_
628
629
# Classes
630
class Credentials(With_from_param):
631
def __init__(self):
632
self._as_parameter_ = gnutls.certificate_credentials_t()
633
gnutls.certificate_allocate_credentials(self)
634
self.type = gnutls.CRD_CERTIFICATE
635
636
def __del__(self):
637
gnutls.certificate_free_credentials(self)
638
639
class ClientSession(With_from_param):
640
def __init__(self, socket, credentials=None):
641
self._as_parameter_ = gnutls.session_t()
642
gnutls_flags = gnutls.CLIENT
643
if gnutls.check_version(b"3.5.6"):
644
gnutls_flags |= gnutls.NO_TICKETS
645
if gnutls.has_rawpk:
646
gnutls_flags |= gnutls.ENABLE_RAWPK
647
gnutls.init(self, gnutls_flags)
648
del gnutls_flags
649
gnutls.set_default_priority(self)
650
gnutls.transport_set_ptr(self, socket.fileno())
651
gnutls.handshake_set_private_extensions(self, True)
652
self.socket = socket
653
if credentials is None:
654
credentials = gnutls.Credentials()
655
gnutls.credentials_set(self, credentials.type,
656
credentials)
657
self.credentials = credentials
658
659
def __del__(self):
660
gnutls.deinit(self)
661
662
def handshake(self):
663
return gnutls.handshake(self)
664
665
def send(self, data):
666
data = bytes(data)
667
data_len = len(data)
668
while data_len > 0:
669
data_len -= gnutls.record_send(self, data[-data_len:],
670
data_len)
671
672
def bye(self):
673
return gnutls.bye(self, gnutls.SHUT_RDWR)
674
675
# Error handling functions
676
def _error_code(result):
677
"""A function to raise exceptions on errors, suitable
678
for the "restype" attribute on ctypes functions"""
679
if result >= gnutls.E_SUCCESS:
680
return result
681
if result == gnutls.E_NO_CERTIFICATE_FOUND:
682
raise gnutls.CertificateSecurityError(code=result)
683
raise gnutls.Error(code=result)
684
685
def _retry_on_error(result, func, arguments,
686
_error_code=_error_code):
687
"""A function to retry on some errors, suitable
688
for the "errcheck" attribute on ctypes functions"""
689
while result < gnutls.E_SUCCESS:
690
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
691
return _error_code(result)
692
result = func(*arguments)
693
return result
694
695
# Unless otherwise indicated, the function declarations below are
696
# all from the gnutls/gnutls.h C header file.
697
698
# Functions
699
priority_set_direct = _library.gnutls_priority_set_direct
700
priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,
701
ctypes.POINTER(ctypes.c_char_p)]
702
priority_set_direct.restype = _error_code
703
704
init = _library.gnutls_init
705
init.argtypes = [PointerTo(ClientSession), ctypes.c_int]
706
init.restype = _error_code
707
708
set_default_priority = _library.gnutls_set_default_priority
709
set_default_priority.argtypes = [ClientSession]
710
set_default_priority.restype = _error_code
711
712
record_send = _library.gnutls_record_send
713
record_send.argtypes = [ClientSession, ctypes.c_void_p,
714
ctypes.c_size_t]
715
record_send.restype = ctypes.c_ssize_t
716
record_send.errcheck = _retry_on_error
717
718
certificate_allocate_credentials = (
719
_library.gnutls_certificate_allocate_credentials)
720
certificate_allocate_credentials.argtypes = [
721
PointerTo(Credentials)]
722
certificate_allocate_credentials.restype = _error_code
723
724
certificate_free_credentials = (
725
_library.gnutls_certificate_free_credentials)
726
certificate_free_credentials.argtypes = [Credentials]
727
certificate_free_credentials.restype = None
728
729
handshake_set_private_extensions = (
730
_library.gnutls_handshake_set_private_extensions)
731
handshake_set_private_extensions.argtypes = [ClientSession,
732
ctypes.c_int]
733
handshake_set_private_extensions.restype = None
734
735
credentials_set = _library.gnutls_credentials_set
736
credentials_set.argtypes = [ClientSession, credentials_type_t,
737
CastToVoidPointer(Credentials)]
738
credentials_set.restype = _error_code
739
740
strerror = _library.gnutls_strerror
741
strerror.argtypes = [ctypes.c_int]
742
strerror.restype = ctypes.c_char_p
743
744
certificate_type_get = _library.gnutls_certificate_type_get
745
certificate_type_get.argtypes = [ClientSession]
746
certificate_type_get.restype = _error_code
747
748
certificate_get_peers = _library.gnutls_certificate_get_peers
749
certificate_get_peers.argtypes = [ClientSession,
750
ctypes.POINTER(ctypes.c_uint)]
751
certificate_get_peers.restype = ctypes.POINTER(datum_t)
752
753
global_set_log_level = _library.gnutls_global_set_log_level
754
global_set_log_level.argtypes = [ctypes.c_int]
755
global_set_log_level.restype = None
756
757
global_set_log_function = _library.gnutls_global_set_log_function
758
global_set_log_function.argtypes = [log_func]
759
global_set_log_function.restype = None
760
761
deinit = _library.gnutls_deinit
762
deinit.argtypes = [ClientSession]
763
deinit.restype = None
764
765
handshake = _library.gnutls_handshake
766
handshake.argtypes = [ClientSession]
767
handshake.restype = ctypes.c_int
768
handshake.errcheck = _retry_on_error
769
770
transport_set_ptr = _library.gnutls_transport_set_ptr
771
transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]
772
transport_set_ptr.restype = None
773
774
bye = _library.gnutls_bye
775
bye.argtypes = [ClientSession, close_request_t]
776
bye.restype = ctypes.c_int
777
bye.errcheck = _retry_on_error
778
779
check_version = _library.gnutls_check_version
780
check_version.argtypes = [ctypes.c_char_p]
781
check_version.restype = ctypes.c_char_p
782
783
_need_version = b"3.3.0"
784
if check_version(_need_version) is None:
785
raise self.Error("Needs GnuTLS {} or later"
786
.format(_need_version))
787
788
_tls_rawpk_version = b"3.6.6"
789
has_rawpk = bool(check_version(_tls_rawpk_version))
790
791
if has_rawpk:
792
# Types
793
class pubkey_st(ctypes.Structure):
794
_fields = []
795
pubkey_t = ctypes.POINTER(pubkey_st)
796
797
x509_crt_fmt_t = ctypes.c_int
798
799
# All the function declarations below are from
800
# gnutls/abstract.h
801
pubkey_init = _library.gnutls_pubkey_init
802
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
803
pubkey_init.restype = _error_code
804
805
pubkey_import = _library.gnutls_pubkey_import
806
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
807
x509_crt_fmt_t]
808
pubkey_import.restype = _error_code
809
810
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
811
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
812
ctypes.POINTER(ctypes.c_ubyte),
813
ctypes.POINTER(ctypes.c_size_t)]
814
pubkey_get_key_id.restype = _error_code
815
816
pubkey_deinit = _library.gnutls_pubkey_deinit
817
pubkey_deinit.argtypes = [pubkey_t]
818
pubkey_deinit.restype = None
819
else:
820
# All the function declarations below are from
821
# gnutls/openpgp.h
822
823
openpgp_crt_init = _library.gnutls_openpgp_crt_init
824
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
825
openpgp_crt_init.restype = _error_code
826
827
openpgp_crt_import = _library.gnutls_openpgp_crt_import
828
openpgp_crt_import.argtypes = [openpgp_crt_t,
829
ctypes.POINTER(datum_t),
830
openpgp_crt_fmt_t]
831
openpgp_crt_import.restype = _error_code
832
833
openpgp_crt_verify_self = \
834
_library.gnutls_openpgp_crt_verify_self
835
openpgp_crt_verify_self.argtypes = [
836
openpgp_crt_t,
837
ctypes.c_uint,
838
ctypes.POINTER(ctypes.c_uint),
839
]
840
openpgp_crt_verify_self.restype = _error_code
841
842
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
843
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
844
openpgp_crt_deinit.restype = None
845
846
openpgp_crt_get_fingerprint = (
847
_library.gnutls_openpgp_crt_get_fingerprint)
848
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
849
ctypes.c_void_p,
850
ctypes.POINTER(
851
ctypes.c_size_t)]
852
openpgp_crt_get_fingerprint.restype = _error_code
853
854
if check_version(b"3.6.4"):
855
certificate_type_get2 = _library.gnutls_certificate_type_get2
856
certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]
857
certificate_type_get2.restype = _error_code
858
859
# Remove non-public functions
860
del _error_code, _retry_on_error
861
862
863
def call_pipe(connection, # : multiprocessing.Connection
864
func, *args, **kwargs):
865
"""This function is meant to be called by multiprocessing.Process
866
867
This function runs func(*args, **kwargs), and writes the resulting
868
return value on the provided multiprocessing.Connection.
869
"""
870
connection.send(func(*args, **kwargs))
871
connection.close()
872
873
874
class Client:
267
class Client(object):
875
268
"""A representation of a client host served by this server.
876
269
877
270
Attributes:
878
approved: bool(); None if not yet approved/disapproved
271
_approved: bool(); 'None' if not yet approved/disapproved
879
272
approval_delay: datetime.timedelta(); Time to wait for approval
880
273
approval_duration: datetime.timedelta(); Duration of one approval
881
checker: multiprocessing.Process(); a running checker process used
882
to see if the client lives. None if no process is
883
running.
884
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
885
278
checker_command: string; External command which is run to check
886
279
if client lives. %() expansions are done at
887
280
runtime with vars(self) as dict, so that for
888
281
instance %(name)s can be used in the command.
889
checker_initiator_tag: a GLib event source tag, or None
282
checker_initiator_tag: a gobject event source tag, or None
890
283
created: datetime.datetime(); (UTC) object creation
891
client_structure: Object describing what attributes a client has
892
and is used for storing the client at exit
893
284
current_checker_command: string; current running checker_command
894
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
895
287
enabled: bool()
896
288
fingerprint: string (40 or 32 hexadecimal digits); used to
897
uniquely identify an OpenPGP client
898
key_id: string (64 hexadecimal digits); used to uniquely identify
899
a client using raw public keys
289
uniquely identify the client
900
290
host: string; available for use by the checker command
901
291
interval: datetime.timedelta(); How often to start a new checker
902
292
last_approval_request: datetime.datetime(); (UTC) or None
903
293
last_checked_ok: datetime.datetime(); (UTC) or None
904
last_checker_status: integer between 0 and 255 reflecting exit
905
status of last checker. -1 reflects crashed
906
checker, -2 means no checker completed yet.
907
last_checker_signal: The signal which killed the last checker, if
908
last_checker_status is -1
909
last_enabled: datetime.datetime(); (UTC) or None
294
last_enabled: datetime.datetime(); (UTC)
910
295
name: string; from the config file, used in log messages and
911
296
D-Bus identifiers
912
297
secret: bytestring; sent verbatim (over TLS) to client
913
298
timeout: datetime.timedelta(); How long from last_checked_ok
914
299
until this client is disabled
915
extended_timeout: extra long timeout when secret has been sent
916
300
runtime_expansions: Allowed attributes for runtime expansion.
917
expires: datetime.datetime(); time (UTC) when a client will be
918
disabled, or None
919
server_settings: The server_settings dict from main()
920
301
"""
921
302
922
303
runtime_expansions = ("approval_delay", "approval_duration",
923
"created", "enabled", "expires", "key_id",
924
"fingerprint", "host", "interval",
925
"last_approval_request", "last_checked_ok",
304
"created", "enabled", "fingerprint",
305
"host", "interval", "last_checked_ok",
926
306
"last_enabled", "name", "timeout")
927
client_defaults = {
928
"timeout": "PT5M",
929
"extended_timeout": "PT15M",
930
"interval": "PT2M",
931
"checker": "fping -q -- %%(host)s",
932
"host": "",
933
"approval_delay": "PT0S",
934
"approval_duration": "PT1S",
935
"approved_by_default": "True",
936
"enabled": "True",
937
}
938
307
939
308
@staticmethod
940
def config_parser(config):
941
"""Construct a new dict of client settings of this form:
942
{ client_name: {setting_name: value, ...}, ...}
943
with exceptions for any special settings as defined above.
944
NOTE: Must be a pure function. Must return the same result
945
value given the same arguments.
946
"""
947
settings = {}
948
for client_name in config.sections():
949
section = dict(config.items(client_name))
950
client = settings[client_name] = {}
951
952
client["host"] = section["host"]
953
# Reformat values from string types to Python types
954
client["approved_by_default"] = config.getboolean(
955
client_name, "approved_by_default")
956
client["enabled"] = config.getboolean(client_name,
957
"enabled")
958
959
# Uppercase and remove spaces from key_id and fingerprint
960
# for later comparison purposes with return value from the
961
# key_id() and fingerprint() functions
962
client["key_id"] = (section.get("key_id", "").upper()
963
.replace(" ", ""))
964
client["fingerprint"] = (section["fingerprint"].upper()
965
.replace(" ", ""))
966
if "secret" in section:
967
client["secret"] = codecs.decode(section["secret"]
968
.encode("utf-8"),
969
"base64")
970
elif "secfile" in section:
971
with open(os.path.expanduser(os.path.expandvars
972
(section["secfile"])),
973
"rb") as secfile:
974
client["secret"] = secfile.read()
975
else:
976
raise TypeError("No secret or secfile for section {}"
977
.format(section))
978
client["timeout"] = string_to_delta(section["timeout"])
979
client["extended_timeout"] = string_to_delta(
980
section["extended_timeout"])
981
client["interval"] = string_to_delta(section["interval"])
982
client["approval_delay"] = string_to_delta(
983
section["approval_delay"])
984
client["approval_duration"] = string_to_delta(
985
section["approval_duration"])
986
client["checker_command"] = section["checker"]
987
client["last_approval_request"] = None
988
client["last_checked_ok"] = None
989
client["last_checker_status"] = -2
990
991
return settings
992
993
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."""
994
330
self.name = name
995
if server_settings is None:
996
server_settings = {}
997
self.server_settings = server_settings
998
# adding all client settings
999
for setting, value in settings.items():
1000
setattr(self, setting, value)
1001
1002
if self.enabled:
1003
if not hasattr(self, "last_enabled"):
1004
self.last_enabled = datetime.datetime.utcnow()
1005
if not hasattr(self, "expires"):
1006
self.expires = (datetime.datetime.utcnow()
1007
+ self.timeout)
331
if config is None:
332
config = {}
333
logger.debug("Creating client %r", self.name)
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(" ", ""))
339
logger.debug(" Fingerprint: %s", self.fingerprint)
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()
1008
347
else:
1009
self.last_enabled = None
1010
self.expires = None
1011
1012
log.debug("Creating client %r", self.name)
1013
log.debug(" Key ID: %s", self.key_id)
1014
log.debug(" Fingerprint: %s", self.fingerprint)
1015
self.created = settings.get("created",
1016
datetime.datetime.utcnow())
1017
1018
# attributes specific for this server instance
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
1019
359
self.checker = None
1020
360
self.checker_initiator_tag = None
1021
361
self.disable_initiator_tag = None
1022
362
self.checker_callback_tag = None
363
self.checker_command = config["checker"]
1023
364
self.current_checker_command = None
1024
self.approved = None
365
self.last_connect = None
366
self._approved = None
367
self.approved_by_default = config.get("approved_by_default",
368
True)
1025
369
self.approvals_pending = 0
1026
self.changedstate = multiprocessing_manager.Condition(
1027
multiprocessing_manager.Lock())
1028
self.client_structure = [attr
1029
for attr in self.__dict__.keys()
1030
if not attr.startswith("_")]
1031
self.client_structure.append("client_structure")
1032
1033
for name, t in inspect.getmembers(
1034
type(self), lambda obj: isinstance(obj, property)):
1035
if not name.startswith("_"):
1036
self.client_structure.append(name)
1037
1038
# 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
1039
376
def send_changedstate(self):
1040
with self.changedstate:
1041
self.changedstate.notify_all()
1042
377
self.changedstate.acquire()
378
self.changedstate.notify_all()
379
self.changedstate.release()
380
1043
381
def enable(self):
1044
382
"""Start this client's checker and timeout hooks"""
1045
383
if getattr(self, "enabled", False):
1046
384
# Already enabled
1047
385
return
1048
self.expires = datetime.datetime.utcnow() + self.timeout
1049
self.enabled = True
386
self.send_changedstate()
1050
387
self.last_enabled = datetime.datetime.utcnow()
1051
self.init_checker()
1052
self.send_changedstate()
1053
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
1054
401
def disable(self, quiet=True):
1055
402
"""Disable this client."""
1056
403
if not getattr(self, "enabled", False):
1057
404
return False
1058
405
if not quiet:
1059
log.info("Disabling client %s", self.name)
1060
if getattr(self, "disable_initiator_tag", None) is not None:
1061
GLib.source_remove(self.disable_initiator_tag)
406
self.send_changedstate()
407
if not quiet:
408
logger.info("Disabling client %s", self.name)
409
if getattr(self, "disable_initiator_tag", False):
410
gobject.source_remove(self.disable_initiator_tag)
1062
411
self.disable_initiator_tag = None
1063
self.expires = None
1064
if getattr(self, "checker_initiator_tag", None) is not None:
1065
GLib.source_remove(self.checker_initiator_tag)
412
if getattr(self, "checker_initiator_tag", False):
413
gobject.source_remove(self.checker_initiator_tag)
1066
414
self.checker_initiator_tag = None
1067
415
self.stop_checker()
416
if self.disable_hook:
417
self.disable_hook(self)
1068
418
self.enabled = False
1069
if not quiet:
1070
self.send_changedstate()
1071
# 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
1072
420
return False
1073
421
1074
422
def __del__(self):
423
self.disable_hook = None
1075
424
self.disable()
1076
1077
def init_checker(self):
1078
# Schedule a new checker to be started an 'interval' from now,
1079
# and every interval from then on.
1080
if self.checker_initiator_tag is not None:
1081
GLib.source_remove(self.checker_initiator_tag)
1082
self.checker_initiator_tag = GLib.timeout_add(
1083
random.randrange(int(self.interval.total_seconds() * 1000
1084
+ 1)),
1085
self.start_checker)
1086
# Schedule a disable() when 'timeout' has passed
1087
if self.disable_initiator_tag is not None:
1088
GLib.source_remove(self.disable_initiator_tag)
1089
self.disable_initiator_tag = GLib.timeout_add(
1090
int(self.timeout.total_seconds() * 1000), self.disable)
1091
# Also start a new checker *right now*.
1092
self.start_checker()
1093
1094
def checker_callback(self, source, condition, connection,
1095
command):
425
426
def checker_callback(self, pid, condition, command):
1096
427
"""The checker has completed, so take appropriate actions."""
1097
# Read return code from connection (see call_pipe)
1098
returncode = connection.recv()
1099
connection.close()
1100
if self.checker is not None:
1101
self.checker.join()
1102
428
self.checker_callback_tag = None
1103
429
self.checker = None
1104
1105
if returncode >= 0:
1106
self.last_checker_status = returncode
1107
self.last_checker_signal = None
1108
if self.last_checker_status == 0:
1109
log.info("Checker for %(name)s succeeded", vars(self))
430
if os.WIFEXITED(condition):
431
exitstatus = os.WEXITSTATUS(condition)
432
if exitstatus == 0:
433
logger.info("Checker for %(name)s succeeded",
434
vars(self))
1110
435
self.checked_ok()
1111
436
else:
1112
log.info("Checker for %(name)s failed", vars(self))
437
logger.info("Checker for %(name)s failed",
438
vars(self))
1113
439
else:
1114
self.last_checker_status = -1
1115
self.last_checker_signal = -returncode
1116
log.warning("Checker for %(name)s crashed?", vars(self))
1117
return False
1118
440
logger.warning("Checker for %(name)s crashed?",
441
vars(self))
442
1119
443
def checked_ok(self):
1120
"""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
"""
1121
449
self.last_checked_ok = datetime.datetime.utcnow()
1122
self.last_checker_status = 0
1123
self.last_checker_signal = None
1124
self.bump_timeout()
1125
1126
def bump_timeout(self, timeout=None):
1127
"""Bump up the timeout for this client."""
1128
if timeout is None:
1129
timeout = self.timeout
1130
if self.disable_initiator_tag is not None:
1131
GLib.source_remove(self.disable_initiator_tag)
1132
self.disable_initiator_tag = None
1133
if getattr(self, "enabled", False):
1134
self.disable_initiator_tag = GLib.timeout_add(
1135
int(timeout.total_seconds() * 1000), self.disable)
1136
self.expires = datetime.datetime.utcnow() + timeout
1137
450
gobject.source_remove(self.disable_initiator_tag)
451
self.disable_initiator_tag = (gobject.timeout_add
452
(self.timeout_milliseconds(),
453
self.disable))
454
1138
455
def need_approval(self):
1139
456
self.last_approval_request = datetime.datetime.utcnow()
1140
457
1141
458
def start_checker(self):
1142
459
"""Start a new checker subprocess if one is not running.
1143
460
1144
461
If a checker already exists, leave it running and do
1145
462
nothing."""
1146
463
# The reason for not killing a running checker is that if we
1147
# did that, and if a checker (for some reason) started running
1148
# slowly and taking more than 'interval' time, then the client
1149
# would inevitably timeout, since no checker would get a
1150
# 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
1151
468
# checkers alone, the checker would have to take more time
1152
469
# than 'timeout' for the client to be disabled, which is as it
1153
470
# should be.
1154
1155
if self.checker is not None and not self.checker.is_alive():
1156
log.warning("Checker was not alive; joining")
1157
self.checker.join()
1158
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)
1159
485
# Start a new checker if needed
1160
486
if self.checker is None:
1161
# Escape attributes for the shell
1162
escaped_attrs = {
1163
attr: shlex.quote(str(getattr(self, attr)))
1164
for attr in self.runtime_expansions}
1165
487
try:
1166
command = self.checker_command % escaped_attrs
1167
except TypeError as error:
1168
log.error('Could not format string "%s"',
1169
self.checker_command, exc_info=error)
1170
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
1171
506
self.current_checker_command = command
1172
log.info("Starting checker %r for %s", command, self.name)
1173
# We don't need to redirect stdout and stderr, since
1174
# in normal mode, that is already done by daemon(),
1175
# and in debug mode we don't want to. (Stdin is
1176
# always replaced by /dev/null.)
1177
# The exception is when not debugging but nevertheless
1178
# running in the foreground; use the previously
1179
# created wnull.
1180
popen_args = {"close_fds": True,
1181
"shell": True,
1182
"cwd": "/"}
1183
if (not self.server_settings["debug"]
1184
and self.server_settings["foreground"]):
1185
popen_args.update({"stdout": wnull,
1186
"stderr": wnull})
1187
pipe = multiprocessing.Pipe(duplex=False)
1188
self.checker = multiprocessing.Process(
1189
target=call_pipe,
1190
args=(pipe[1], subprocess.call, command),
1191
kwargs=popen_args)
1192
self.checker.start()
1193
self.checker_callback_tag = GLib.io_add_watch(
1194
GLib.IOChannel.unix_new(pipe[0].fileno()),
1195
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1196
self.checker_callback, pipe[0], command)
1197
# 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
1198
531
return True
1199
532
1200
533
def stop_checker(self):
1201
534
"""Force the checker process, if any, to stop."""
1202
535
if self.checker_callback_tag:
1203
GLib.source_remove(self.checker_callback_tag)
536
gobject.source_remove(self.checker_callback_tag)
1204
537
self.checker_callback_tag = None
1205
538
if getattr(self, "checker", None) is None:
1206
539
return
1207
log.debug("Stopping checker for %(name)s", vars(self))
1208
self.checker.terminate()
540
logger.debug("Stopping checker for %(name)s", vars(self))
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
1209
549
self.checker = None
1210
550
1211
1212
def dbus_service_property(dbus_interface,
1213
signature="v",
1214
access="readwrite",
1215
byte_arrays=False):
551
def dbus_service_property(dbus_interface, signature="v",
552
access="readwrite", byte_arrays=False):
1216
553
"""Decorators for marking methods of a DBusObjectWithProperties to
1217
554
become properties on the D-Bus.
1218
555
1219
556
The decorated method will be called with no arguments by "Get"
1220
557
and with one argument by "Set".
1221
558
1222
559
The parameters, where they are supported, are the same as
1223
560
dbus.service.method, except there is only "signature", since the
1224
561
type from Get() and the type sent to Set() is the same.
1227
564
# "Set" method, so we fail early here:
1228
565
if byte_arrays and signature != "ay":
1229
566
raise ValueError("Byte arrays not supported for non-'ay'"
1230
" signature {!r}".format(signature))
1231
567
" signature %r" % signature)
1232
568
def decorator(func):
1233
569
func._dbus_is_property = True
1234
570
func._dbus_interface = dbus_interface
1237
573
func._dbus_name = func.__name__
1238
574
if func._dbus_name.endswith("_dbus_property"):
1239
575
func._dbus_name = func._dbus_name[:-14]
1240
func._dbus_get_args_options = {"byte_arrays": byte_arrays}
1241
return func
1242
1243
return decorator
1244
1245
1246
def dbus_interface_annotations(dbus_interface):
1247
"""Decorator for marking functions returning interface annotations
1248
1249
Usage:
1250
1251
@dbus_interface_annotations("org.example.Interface")
1252
def _foo(self): # Function name does not matter
1253
return {"org.freedesktop.DBus.Deprecated": "true",
1254
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1255
"false"}
1256
"""
1257
1258
def decorator(func):
1259
func._dbus_is_interface = True
1260
func._dbus_interface = dbus_interface
1261
func._dbus_name = dbus_interface
1262
return func
1263
1264
return decorator
1265
1266
1267
def dbus_annotations(annotations):
1268
"""Decorator to annotate D-Bus methods, signals or properties
1269
Usage:
1270
1271
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1272
"org.freedesktop.DBus.Property."
1273
"EmitsChangedSignal": "false"})
1274
@dbus_service_property("org.example.Interface", signature="b",
1275
access="r")
1276
def Property_dbus_property(self):
1277
return dbus.Boolean(False)
1278
1279
See also the DBusObjectWithAnnotations class.
1280
"""
1281
1282
def decorator(func):
1283
func._dbus_annotations = annotations
1284
return func
1285
576
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
577
return func
1286
578
return decorator
1287
579
1288
580
1289
581
class DBusPropertyException(dbus.exceptions.DBusException):
1290
582
"""A base class for D-Bus property-related exceptions
1291
583
"""
1292
pass
584
def __unicode__(self):
585
return unicode(str(self))
1293
586
1294
587
1295
588
class DBusPropertyAccessException(DBusPropertyException):
1304
597
pass
1305
598
1306
599
1307
class DBusObjectWithAnnotations(dbus.service.Object):
1308
"""A D-Bus object with annotations.
1309
1310
Classes inheriting from this can use the dbus_annotations
1311
decorator to add annotations to methods or signals.
1312
"""
1313
1314
@staticmethod
1315
def _is_dbus_thing(thing):
1316
"""Returns a function testing if an attribute is a D-Bus thing
1317
1318
If called like _is_dbus_thing("method") it returns a function
1319
suitable for use as predicate to inspect.getmembers().
1320
"""
1321
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1322
False)
1323
1324
def _get_all_dbus_things(self, thing):
1325
"""Returns a generator of (name, attribute) pairs
1326
"""
1327
return ((getattr(athing.__get__(self), "_dbus_name", name),
1328
athing.__get__(self))
1329
for cls in self.__class__.__mro__
1330
for name, athing in
1331
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1332
1333
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1334
out_signature="s",
1335
path_keyword="object_path",
1336
connection_keyword="connection")
1337
def Introspect(self, object_path, connection):
1338
"""Overloading of standard D-Bus method.
1339
1340
Inserts annotation tags on methods and signals.
1341
"""
1342
xmlstring = dbus.service.Object.Introspect(self, object_path,
1343
connection)
1344
try:
1345
document = xml.dom.minidom.parseString(xmlstring)
1346
1347
for if_tag in document.getElementsByTagName("interface"):
1348
# Add annotation tags
1349
for typ in ("method", "signal"):
1350
for tag in if_tag.getElementsByTagName(typ):
1351
annots = dict()
1352
for name, prop in (self.
1353
_get_all_dbus_things(typ)):
1354
if (name == tag.getAttribute("name")
1355
and prop._dbus_interface
1356
== if_tag.getAttribute("name")):
1357
annots.update(getattr(
1358
prop, "_dbus_annotations", {}))
1359
for name, value in annots.items():
1360
ann_tag = document.createElement(
1361
"annotation")
1362
ann_tag.setAttribute("name", name)
1363
ann_tag.setAttribute("value", value)
1364
tag.appendChild(ann_tag)
1365
# Add interface annotation tags
1366
for annotation, value in dict(
1367
itertools.chain.from_iterable(
1368
annotations().items()
1369
for name, annotations
1370
in self._get_all_dbus_things("interface")
1371
if name == if_tag.getAttribute("name")
1372
)).items():
1373
ann_tag = document.createElement("annotation")
1374
ann_tag.setAttribute("name", annotation)
1375
ann_tag.setAttribute("value", value)
1376
if_tag.appendChild(ann_tag)
1377
# Fix argument name for the Introspect method itself
1378
if (if_tag.getAttribute("name")
1379
== dbus.INTROSPECTABLE_IFACE):
1380
for cn in if_tag.getElementsByTagName("method"):
1381
if cn.getAttribute("name") == "Introspect":
1382
for arg in cn.getElementsByTagName("arg"):
1383
if (arg.getAttribute("direction")
1384
== "out"):
1385
arg.setAttribute("name",
1386
"xml_data")
1387
xmlstring = document.toxml("utf-8")
1388
document.unlink()
1389
except (AttributeError, xml.dom.DOMException,
1390
xml.parsers.expat.ExpatError) as error:
1391
log.error("Failed to override Introspection method",
1392
exc_info=error)
1393
return xmlstring
1394
1395
1396
class DBusObjectWithProperties(DBusObjectWithAnnotations):
600
class DBusObjectWithProperties(dbus.service.Object):
1397
601
"""A D-Bus object with properties.
1398
602
1399
603
Classes inheriting from this can use the dbus_service_property
1400
604
decorator to expose methods as D-Bus properties. It exposes the
1401
605
standard Get(), Set(), and GetAll() methods on the D-Bus.
1402
606
"""
1403
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
1404
619
def _get_dbus_property(self, interface_name, property_name):
1405
620
"""Returns a bound method if one exists which is a D-Bus
1406
621
property with the specified name and interface.
1407
622
"""
1408
for cls in self.__class__.__mro__:
1409
for name, value in inspect.getmembers(
1410
cls, self._is_dbus_thing("property")):
1411
if (value._dbus_name == property_name
1412
and value._dbus_interface == interface_name):
1413
return value.__get__(self)
1414
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
1415
633
# No such property
1416
raise DBusPropertyNotFound("{}:{}.{}".format(
1417
self.dbus_object_path, interface_name, property_name))
1418
1419
@classmethod
1420
def _get_all_interface_names(cls):
1421
"""Get a sequence of all interfaces supported by an object"""
1422
return (name for name in set(getattr(getattr(x, attr),
1423
"_dbus_interface", None)
1424
for x in (inspect.getmro(cls))
1425
for attr in dir(x))
1426
if name is not None)
1427
1428
@dbus.service.method(dbus.PROPERTIES_IFACE,
1429
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",
1430
639
out_signature="v")
1431
640
def Get(self, interface_name, property_name):
1432
641
"""Standard D-Bus property Get() method, see D-Bus standard.
1438
647
if not hasattr(value, "variant_level"):
1439
648
return value
1440
649
return type(value)(value, variant_level=value.variant_level+1)
1441
650
1442
651
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1443
652
def Set(self, interface_name, property_name, value):
1444
653
"""Standard D-Bus property Set() method, see D-Bus standard.
1450
659
# The byte_arrays option is not supported yet on
1451
660
# signatures other than "ay".
1452
661
if prop._dbus_signature != "ay":
1453
raise ValueError("Byte arrays not supported for non-"
1454
"'ay' signature {!r}"
1455
.format(prop._dbus_signature))
1456
value = dbus.ByteArray(bytes(value))
662
raise ValueError
663
value = dbus.ByteArray(''.join(unichr(byte)
664
for byte in value))
1457
665
prop(value)
1458
1459
@dbus.service.method(dbus.PROPERTIES_IFACE,
1460
in_signature="s",
666
667
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1461
668
out_signature="a{sv}")
1462
669
def GetAll(self, interface_name):
1463
670
"""Standard D-Bus property GetAll() method, see D-Bus
1465
672
1466
673
Note: Will not include properties with access="write".
1467
674
"""
1468
properties = {}
1469
for name, prop in self._get_all_dbus_things("property"):
675
all = {}
676
for name, prop in self._get_all_dbus_properties():
1470
677
if (interface_name
1471
678
and interface_name != prop._dbus_interface):
1472
679
# Interface non-empty but did not match
1476
683
continue
1477
684
value = prop()
1478
685
if not hasattr(value, "variant_level"):
1479
properties[name] = value
686
all[name] = value
1480
687
continue
1481
properties[name] = type(value)(
1482
value, variant_level=value.variant_level + 1)
1483
return dbus.Dictionary(properties, signature="sv")
1484
1485
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1486
def PropertiesChanged(self, interface_name, changed_properties,
1487
invalidated_properties):
1488
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1489
standard.
1490
"""
1491
pass
1492
688
all[name] = type(value)(value, variant_level=
689
value.variant_level+1)
690
return dbus.Dictionary(all, signature="sv")
691
1493
692
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1494
693
out_signature="s",
1495
path_keyword="object_path",
1496
connection_keyword="connection")
694
path_keyword='object_path',
695
connection_keyword='connection')
1497
696
def Introspect(self, object_path, connection):
1498
"""Overloading of standard D-Bus method.
1499
1500
Inserts property tags and interface annotation tags.
697
"""Standard D-Bus method, overloaded to insert property tags.
1501
698
"""
1502
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1503
object_path,
1504
connection)
699
xmlstring = dbus.service.Object.Introspect(self, object_path,
700
connection)
1505
701
try:
1506
702
document = xml.dom.minidom.parseString(xmlstring)
1507
1508
703
def make_tag(document, name, prop):
1509
704
e = document.createElement("property")
1510
705
e.setAttribute("name", name)
1511
706
e.setAttribute("type", prop._dbus_signature)
1512
707
e.setAttribute("access", prop._dbus_access)
1513
708
return e
1514
1515
709
for if_tag in document.getElementsByTagName("interface"):
1516
# Add property tags
1517
710
for tag in (make_tag(document, name, prop)
1518
711
for name, prop
1519
in self._get_all_dbus_things("property")
712
in self._get_all_dbus_properties()
1520
713
if prop._dbus_interface
1521
714
== if_tag.getAttribute("name")):
1522
715
if_tag.appendChild(tag)
1523
# Add annotation tags for properties
1524
for tag in if_tag.getElementsByTagName("property"):
1525
annots = dict()
1526
for name, prop in self._get_all_dbus_things(
1527
"property"):
1528
if (name == tag.getAttribute("name")
1529
and prop._dbus_interface
1530
== if_tag.getAttribute("name")):
1531
annots.update(getattr(
1532
prop, "_dbus_annotations", {}))
1533
for name, value in annots.items():
1534
ann_tag = document.createElement(
1535
"annotation")
1536
ann_tag.setAttribute("name", name)
1537
ann_tag.setAttribute("value", value)
1538
tag.appendChild(ann_tag)
1539
716
# Add the names to the return values for the
1540
717
# "org.freedesktop.DBus.Properties" methods
1541
718
if (if_tag.getAttribute("name")
1555
732
document.unlink()
1556
733
except (AttributeError, xml.dom.DOMException,
1557
734
xml.parsers.expat.ExpatError) as error:
1558
log.error("Failed to override Introspection method",
1559
exc_info=error)
1560
return xmlstring
1561
1562
1563
try:
1564
dbus.OBJECT_MANAGER_IFACE
1565
except AttributeError:
1566
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1567
1568
1569
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1570
"""A D-Bus object with an ObjectManager.
1571
1572
Classes inheriting from this exposes the standard
1573
GetManagedObjects call and the InterfacesAdded and
1574
InterfacesRemoved signals on the standard
1575
"org.freedesktop.DBus.ObjectManager" interface.
1576
1577
Note: No signals are sent automatically; they must be sent
1578
manually.
1579
"""
1580
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1581
out_signature="a{oa{sa{sv}}}")
1582
def GetManagedObjects(self):
1583
"""This function must be overridden"""
1584
raise NotImplementedError()
1585
1586
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1587
signature="oa{sa{sv}}")
1588
def InterfacesAdded(self, object_path, interfaces_and_properties):
1589
pass
1590
1591
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1592
def InterfacesRemoved(self, object_path, interfaces):
1593
pass
1594
1595
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1596
out_signature="s",
1597
path_keyword="object_path",
1598
connection_keyword="connection")
1599
def Introspect(self, object_path, connection):
1600
"""Overloading of standard D-Bus method.
1601
1602
Override return argument name of GetManagedObjects to be
1603
"objpath_interfaces_and_properties"
1604
"""
1605
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1606
object_path,
1607
connection)
1608
try:
1609
document = xml.dom.minidom.parseString(xmlstring)
1610
1611
for if_tag in document.getElementsByTagName("interface"):
1612
# Fix argument name for the GetManagedObjects method
1613
if (if_tag.getAttribute("name")
1614
== dbus.OBJECT_MANAGER_IFACE):
1615
for cn in if_tag.getElementsByTagName("method"):
1616
if (cn.getAttribute("name")
1617
== "GetManagedObjects"):
1618
for arg in cn.getElementsByTagName("arg"):
1619
if (arg.getAttribute("direction")
1620
== "out"):
1621
arg.setAttribute(
1622
"name",
1623
"objpath_interfaces"
1624
"_and_properties")
1625
xmlstring = document.toxml("utf-8")
1626
document.unlink()
1627
except (AttributeError, xml.dom.DOMException,
1628
xml.parsers.expat.ExpatError) as error:
1629
log.error("Failed to override Introspection method",
1630
exc_info=error)
1631
return xmlstring
1632
1633
1634
def datetime_to_dbus(dt, variant_level=0):
1635
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1636
if dt is None:
1637
return dbus.String("", variant_level=variant_level)
1638
return dbus.String(dt.isoformat(), variant_level=variant_level)
1639
1640
1641
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1642
"""A class decorator; applied to a subclass of
1643
dbus.service.Object, it will add alternate D-Bus attributes with
1644
interface names according to the "alt_interface_names" mapping.
1645
Usage:
1646
1647
@alternate_dbus_interfaces({"org.example.Interface":
1648
"net.example.AlternateInterface"})
1649
class SampleDBusObject(dbus.service.Object):
1650
@dbus.service.method("org.example.Interface")
1651
def SampleDBusMethod():
1652
pass
1653
1654
The above "SampleDBusMethod" on "SampleDBusObject" will be
1655
reachable via two interfaces: "org.example.Interface" and
1656
"net.example.AlternateInterface", the latter of which will have
1657
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1658
"true", unless "deprecate" is passed with a False value.
1659
1660
This works for methods and signals, and also for D-Bus properties
1661
(from DBusObjectWithProperties) and interfaces (from the
1662
dbus_interface_annotations decorator).
1663
"""
1664
1665
def wrapper(cls):
1666
for orig_interface_name, alt_interface_name in (
1667
alt_interface_names.items()):
1668
attr = {}
1669
interface_names = set()
1670
# Go though all attributes of the class
1671
for attrname, attribute in inspect.getmembers(cls):
1672
# Ignore non-D-Bus attributes, and D-Bus attributes
1673
# with the wrong interface name
1674
if (not hasattr(attribute, "_dbus_interface")
1675
or not attribute._dbus_interface.startswith(
1676
orig_interface_name)):
1677
continue
1678
# Create an alternate D-Bus interface name based on
1679
# the current name
1680
alt_interface = attribute._dbus_interface.replace(
1681
orig_interface_name, alt_interface_name)
1682
interface_names.add(alt_interface)
1683
# Is this a D-Bus signal?
1684
if getattr(attribute, "_dbus_is_signal", False):
1685
# Extract the original non-method undecorated
1686
# function by black magic
1687
if sys.version_info.major == 2:
1688
nonmethod_func = (dict(
1689
zip(attribute.func_code.co_freevars,
1690
attribute.__closure__))
1691
["func"].cell_contents)
1692
else:
1693
nonmethod_func = (dict(
1694
zip(attribute.__code__.co_freevars,
1695
attribute.__closure__))
1696
["func"].cell_contents)
1697
# Create a new, but exactly alike, function
1698
# object, and decorate it to be a new D-Bus signal
1699
# with the alternate D-Bus interface name
1700
new_function = copy_function(nonmethod_func)
1701
new_function = (dbus.service.signal(
1702
alt_interface,
1703
attribute._dbus_signature)(new_function))
1704
# Copy annotations, if any
1705
try:
1706
new_function._dbus_annotations = dict(
1707
attribute._dbus_annotations)
1708
except AttributeError:
1709
pass
1710
1711
# Define a creator of a function to call both the
1712
# original and alternate functions, so both the
1713
# original and alternate signals gets sent when
1714
# the function is called
1715
def fixscope(func1, func2):
1716
"""This function is a scope container to pass
1717
func1 and func2 to the "call_both" function
1718
outside of its arguments"""
1719
1720
@functools.wraps(func2)
1721
def call_both(*args, **kwargs):
1722
"""This function will emit two D-Bus
1723
signals by calling func1 and func2"""
1724
func1(*args, **kwargs)
1725
func2(*args, **kwargs)
1726
# Make wrapper function look like a D-Bus
1727
# signal
1728
for name, attr in inspect.getmembers(func2):
1729
if name.startswith("_dbus_"):
1730
setattr(call_both, name, attr)
1731
1732
return call_both
1733
# Create the "call_both" function and add it to
1734
# the class
1735
attr[attrname] = fixscope(attribute, new_function)
1736
# Is this a D-Bus method?
1737
elif getattr(attribute, "_dbus_is_method", False):
1738
# Create a new, but exactly alike, function
1739
# object. Decorate it to be a new D-Bus method
1740
# with the alternate D-Bus interface name. Add it
1741
# to the class.
1742
attr[attrname] = (
1743
dbus.service.method(
1744
alt_interface,
1745
attribute._dbus_in_signature,
1746
attribute._dbus_out_signature)
1747
(copy_function(attribute)))
1748
# Copy annotations, if any
1749
try:
1750
attr[attrname]._dbus_annotations = dict(
1751
attribute._dbus_annotations)
1752
except AttributeError:
1753
pass
1754
# Is this a D-Bus property?
1755
elif getattr(attribute, "_dbus_is_property", False):
1756
# Create a new, but exactly alike, function
1757
# object, and decorate it to be a new D-Bus
1758
# property with the alternate D-Bus interface
1759
# name. Add it to the class.
1760
attr[attrname] = (dbus_service_property(
1761
alt_interface, attribute._dbus_signature,
1762
attribute._dbus_access,
1763
attribute._dbus_get_args_options
1764
["byte_arrays"])
1765
(copy_function(attribute)))
1766
# Copy annotations, if any
1767
try:
1768
attr[attrname]._dbus_annotations = dict(
1769
attribute._dbus_annotations)
1770
except AttributeError:
1771
pass
1772
# Is this a D-Bus interface?
1773
elif getattr(attribute, "_dbus_is_interface", False):
1774
# Create a new, but exactly alike, function
1775
# object. Decorate it to be a new D-Bus interface
1776
# with the alternate D-Bus interface name. Add it
1777
# to the class.
1778
attr[attrname] = (
1779
dbus_interface_annotations(alt_interface)
1780
(copy_function(attribute)))
1781
if deprecate:
1782
# Deprecate all alternate interfaces
1783
iname = "_AlternateDBusNames_interface_annotation{}"
1784
for interface_name in interface_names:
1785
1786
@dbus_interface_annotations(interface_name)
1787
def func(self):
1788
return {"org.freedesktop.DBus.Deprecated":
1789
"true"}
1790
# Find an unused name
1791
for aname in (iname.format(i)
1792
for i in itertools.count()):
1793
if aname not in attr:
1794
attr[aname] = func
1795
break
1796
if interface_names:
1797
# Replace the class with a new subclass of it with
1798
# methods, signals, etc. as created above.
1799
if sys.version_info.major == 2:
1800
cls = type(b"{}Alternate".format(cls.__name__),
1801
(cls, ), attr)
1802
else:
1803
cls = type("{}Alternate".format(cls.__name__),
1804
(cls, ), attr)
1805
return cls
1806
1807
return wrapper
1808
1809
1810
@alternate_dbus_interfaces({"se.recompile.Mandos":
1811
"se.bsnet.fukt.Mandos"})
735
logger.error("Failed to override Introspection method",
736
error)
737
return xmlstring
738
739
1812
740
class ClientDBus(Client, DBusObjectWithProperties):
1813
741
"""A Client class using D-Bus
1814
742
1815
743
Attributes:
1816
744
dbus_object_path: dbus.ObjectPath
1817
745
bus: dbus.SystemBus()
1818
746
"""
1819
747
1820
748
runtime_expansions = (Client.runtime_expansions
1821
+ ("dbus_object_path", ))
1822
1823
_interface = "se.recompile.Mandos.Client"
1824
749
+ ("dbus_object_path",))
750
1825
751
# dbus.service.Object doesn't use super(), so we can't either.
1826
1827
def __init__(self, bus=None, *args, **kwargs):
752
753
def __init__(self, bus = None, *args, **kwargs):
754
self._approvals_pending = 0
1828
755
self.bus = bus
1829
756
Client.__init__(self, *args, **kwargs)
1830
757
# Only now, when this client is initialized, can it show up on
1831
758
# the D-Bus
1832
client_object_name = str(self.name).translate(
759
client_object_name = unicode(self.name).translate(
1833
760
{ord("."): ord("_"),
1834
761
ord("-"): ord("_")})
1835
self.dbus_object_path = dbus.ObjectPath(
1836
"/clients/" + client_object_name)
762
self.dbus_object_path = (dbus.ObjectPath
763
("/clients/" + client_object_name))
1837
764
DBusObjectWithProperties.__init__(self, self.bus,
1838
765
self.dbus_object_path)
1839
1840
def notifychangeproperty(transform_func, dbus_name,
1841
type_func=lambda x: x,
1842
variant_level=1,
1843
invalidate_only=False,
1844
_interface=_interface):
1845
""" Modify a variable so that it's a property which announces
1846
its changes to DBus.
1847
1848
transform_fun: Function that takes a value and a variant_level
1849
and transforms it to a D-Bus type.
1850
dbus_name: D-Bus name of the variable
1851
type_func: Function that transform the value before sending it
1852
to the D-Bus. Default: no transform
1853
variant_level: D-Bus variant level. Default: 1
1854
"""
1855
attrname = "_{}".format(dbus_name)
1856
1857
def setter(self, value):
1858
if hasattr(self, "dbus_object_path"):
1859
if (not hasattr(self, attrname) or
1860
type_func(getattr(self, attrname, None))
1861
!= type_func(value)):
1862
if invalidate_only:
1863
self.PropertiesChanged(
1864
_interface, dbus.Dictionary(),
1865
dbus.Array((dbus_name, )))
1866
else:
1867
dbus_value = transform_func(
1868
type_func(value),
1869
variant_level=variant_level)
1870
self.PropertyChanged(dbus.String(dbus_name),
1871
dbus_value)
1872
self.PropertiesChanged(
1873
_interface,
1874
dbus.Dictionary({dbus.String(dbus_name):
1875
dbus_value}),
1876
dbus.Array())
1877
setattr(self, attrname, value)
1878
1879
return property(lambda self: getattr(self, attrname), setter)
1880
1881
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1882
approvals_pending = notifychangeproperty(dbus.Boolean,
1883
"ApprovalPending",
1884
type_func=bool)
1885
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1886
last_enabled = notifychangeproperty(datetime_to_dbus,
1887
"LastEnabled")
1888
checker = notifychangeproperty(
1889
dbus.Boolean, "CheckerRunning",
1890
type_func=lambda checker: checker is not None)
1891
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1892
"LastCheckedOK")
1893
last_checker_status = notifychangeproperty(dbus.Int16,
1894
"LastCheckerStatus")
1895
last_approval_request = notifychangeproperty(
1896
datetime_to_dbus, "LastApprovalRequest")
1897
approved_by_default = notifychangeproperty(dbus.Boolean,
1898
"ApprovedByDefault")
1899
approval_delay = notifychangeproperty(
1900
dbus.UInt64, "ApprovalDelay",
1901
type_func=lambda td: td.total_seconds() * 1000)
1902
approval_duration = notifychangeproperty(
1903
dbus.UInt64, "ApprovalDuration",
1904
type_func=lambda td: td.total_seconds() * 1000)
1905
host = notifychangeproperty(dbus.String, "Host")
1906
timeout = notifychangeproperty(
1907
dbus.UInt64, "Timeout",
1908
type_func=lambda td: td.total_seconds() * 1000)
1909
extended_timeout = notifychangeproperty(
1910
dbus.UInt64, "ExtendedTimeout",
1911
type_func=lambda td: td.total_seconds() * 1000)
1912
interval = notifychangeproperty(
1913
dbus.UInt64, "Interval",
1914
type_func=lambda td: td.total_seconds() * 1000)
1915
checker_command = notifychangeproperty(dbus.String, "Checker")
1916
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1917
invalidate_only=True)
1918
1919
del notifychangeproperty
1920
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
1921
811
def __del__(self, *args, **kwargs):
1922
812
try:
1923
813
self.remove_from_connection()
1926
816
if hasattr(DBusObjectWithProperties, "__del__"):
1927
817
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1928
818
Client.__del__(self, *args, **kwargs)
1929
1930
def checker_callback(self, source, condition,
1931
connection, command, *args, **kwargs):
1932
ret = Client.checker_callback(self, source, condition,
1933
connection, command, *args,
1934
**kwargs)
1935
exitstatus = self.last_checker_status
1936
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)
1937
829
# Emit D-Bus signal
1938
830
self.CheckerCompleted(dbus.Int16(exitstatus),
1939
# This is specific to GNU libC
1940
dbus.Int64(exitstatus << 8),
831
dbus.Int64(condition),
1941
832
dbus.String(command))
1942
833
else:
1943
834
# Emit D-Bus signal
1944
835
self.CheckerCompleted(dbus.Int16(-1),
1945
dbus.Int64(
1946
# This is specific to GNU libC
1947
(exitstatus << 8)
1948
| self.last_checker_signal),
836
dbus.Int64(condition),
1949
837
dbus.String(command))
1950
return ret
1951
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
1952
859
def start_checker(self, *args, **kwargs):
1953
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
1954
865
r = Client.start_checker(self, *args, **kwargs)
1955
866
# Only if new checker process was started
1956
867
if (self.checker is not None
1957
868
and old_checker_pid != self.checker.pid):
1958
869
# Emit D-Bus signal
1959
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))
1960
883
return r
1961
884
1962
885
def _reset_approved(self):
1963
self.approved = None
886
self._approved = None
1964
887
return False
1965
888
1966
889
def approve(self, value=True):
1967
self.approved = value
1968
GLib.timeout_add(int(self.approval_duration.total_seconds()
1969
* 1000), self._reset_approved)
1970
890
self.send_changedstate()
1971
1972
# D-Bus methods, signals & properties
1973
1974
# Interfaces
1975
1976
# Signals
1977
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
1978
902
# CheckerCompleted - signal
1979
903
@dbus.service.signal(_interface, signature="nxs")
1980
904
def CheckerCompleted(self, exitcode, waitstatus, command):
1981
905
"D-Bus signal"
1982
906
pass
1983
907
1984
908
# CheckerStarted - signal
1985
909
@dbus.service.signal(_interface, signature="s")
1986
910
def CheckerStarted(self, command):
1987
911
"D-Bus signal"
1988
912
pass
1989
913
1990
914
# PropertyChanged - signal
1991
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1992
915
@dbus.service.signal(_interface, signature="sv")
1993
916
def PropertyChanged(self, property, value):
1994
917
"D-Bus signal"
1995
918
pass
1996
919
1997
920
# GotSecret - signal
1998
921
@dbus.service.signal(_interface)
1999
922
def GotSecret(self):
2002
925
server to mandos-client
2003
926
"""
2004
927
pass
2005
928
2006
929
# Rejected - signal
2007
930
@dbus.service.signal(_interface, signature="s")
2008
931
def Rejected(self, reason):
2009
932
"D-Bus signal"
2010
933
pass
2011
934
2012
935
# NeedApproval - signal
2013
936
@dbus.service.signal(_interface, signature="tb")
2014
937
def NeedApproval(self, timeout, default):
2015
938
"D-Bus signal"
2016
939
return self.need_approval()
2017
2018
# Methods
2019
940
941
## Methods
942
2020
943
# Approve - method
2021
944
@dbus.service.method(_interface, in_signature="b")
2022
945
def Approve(self, value):
2023
946
self.approve(value)
2024
947
2025
948
# CheckedOK - method
2026
949
@dbus.service.method(_interface)
2027
950
def CheckedOK(self):
2028
951
self.checked_ok()
2029
952
2030
953
# Enable - method
2031
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2032
954
@dbus.service.method(_interface)
2033
955
def Enable(self):
2034
956
"D-Bus method"
2035
957
self.enable()
2036
958
2037
959
# StartChecker - method
2038
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2039
960
@dbus.service.method(_interface)
2040
961
def StartChecker(self):
2041
962
"D-Bus method"
2042
963
self.start_checker()
2043
964
2044
965
# Disable - method
2045
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2046
966
@dbus.service.method(_interface)
2047
967
def Disable(self):
2048
968
"D-Bus method"
2049
969
self.disable()
2050
970
2051
971
# StopChecker - method
2052
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2053
972
@dbus.service.method(_interface)
2054
973
def StopChecker(self):
2055
974
self.stop_checker()
2056
2057
# Properties
2058
975
976
## Properties
977
2059
978
# ApprovalPending - property
2060
979
@dbus_service_property(_interface, signature="b", access="read")
2061
980
def ApprovalPending_dbus_property(self):
2062
981
return dbus.Boolean(bool(self.approvals_pending))
2063
982
2064
983
# ApprovedByDefault - property
2065
@dbus_service_property(_interface,
2066
signature="b",
984
@dbus_service_property(_interface, signature="b",
2067
985
access="readwrite")
2068
986
def ApprovedByDefault_dbus_property(self, value=None):
2069
987
if value is None: # get
2070
988
return dbus.Boolean(self.approved_by_default)
2071
989
self.approved_by_default = bool(value)
2072
990
# Emit D-Bus signal
991
self.PropertyChanged(dbus.String("ApprovedByDefault"),
992
dbus.Boolean(value, variant_level=1))
993
2073
994
# ApprovalDelay - property
2074
@dbus_service_property(_interface,
2075
signature="t",
995
@dbus_service_property(_interface, signature="t",
2076
996
access="readwrite")
2077
997
def ApprovalDelay_dbus_property(self, value=None):
2078
998
if value is None: # get
2079
return dbus.UInt64(self.approval_delay.total_seconds()
2080
* 1000)
999
return dbus.UInt64(self.approval_delay_milliseconds())
2081
1000
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2082
1001
# Emit D-Bus signal
1002
self.PropertyChanged(dbus.String("ApprovalDelay"),
1003
dbus.UInt64(value, variant_level=1))
1004
2083
1005
# ApprovalDuration - property
2084
@dbus_service_property(_interface,
2085
signature="t",
1006
@dbus_service_property(_interface, signature="t",
2086
1007
access="readwrite")
2087
1008
def ApprovalDuration_dbus_property(self, value=None):
2088
1009
if value is None: # get
2089
return dbus.UInt64(self.approval_duration.total_seconds()
2090
* 1000)
1010
return dbus.UInt64(self._timedelta_to_milliseconds(
1011
self.approval_duration))
2091
1012
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2092
1013
# Emit D-Bus signal
1014
self.PropertyChanged(dbus.String("ApprovalDuration"),
1015
dbus.UInt64(value, variant_level=1))
1016
2093
1017
# Name - property
2094
@dbus_annotations(
2095
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2096
1018
@dbus_service_property(_interface, signature="s", access="read")
2097
1019
def Name_dbus_property(self):
2098
1020
return dbus.String(self.name)
2099
2100
# KeyID - property
2101
@dbus_annotations(
2102
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2103
@dbus_service_property(_interface, signature="s", access="read")
2104
def KeyID_dbus_property(self):
2105
return dbus.String(self.key_id)
2106
1021
2107
1022
# Fingerprint - property
2108
@dbus_annotations(
2109
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2110
1023
@dbus_service_property(_interface, signature="s", access="read")
2111
1024
def Fingerprint_dbus_property(self):
2112
1025
return dbus.String(self.fingerprint)
2113
1026
2114
1027
# Host - property
2115
@dbus_service_property(_interface,
2116
signature="s",
1028
@dbus_service_property(_interface, signature="s",
2117
1029
access="readwrite")
2118
1030
def Host_dbus_property(self, value=None):
2119
1031
if value is None: # get
2120
1032
return dbus.String(self.host)
2121
self.host = str(value)
2122
1033
self.host = value
1034
# Emit D-Bus signal
1035
self.PropertyChanged(dbus.String("Host"),
1036
dbus.String(value, variant_level=1))
1037
2123
1038
# Created - property
2124
@dbus_annotations(
2125
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2126
1039
@dbus_service_property(_interface, signature="s", access="read")
2127
1040
def Created_dbus_property(self):
2128
return datetime_to_dbus(self.created)
2129
1041
return dbus.String(self._datetime_to_dbus(self.created))
1042
2130
1043
# LastEnabled - property
2131
1044
@dbus_service_property(_interface, signature="s", access="read")
2132
1045
def LastEnabled_dbus_property(self):
2133
return datetime_to_dbus(self.last_enabled)
2134
1046
if self.last_enabled is None:
1047
return dbus.String("")
1048
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1049
2135
1050
# Enabled - property
2136
@dbus_service_property(_interface,
2137
signature="b",
1051
@dbus_service_property(_interface, signature="b",
2138
1052
access="readwrite")
2139
1053
def Enabled_dbus_property(self, value=None):
2140
1054
if value is None: # get
2143
1057
self.enable()
2144
1058
else:
2145
1059
self.disable()
2146
1060
2147
1061
# LastCheckedOK - property
2148
@dbus_service_property(_interface,
2149
signature="s",
1062
@dbus_service_property(_interface, signature="s",
2150
1063
access="readwrite")
2151
1064
def LastCheckedOK_dbus_property(self, value=None):
2152
1065
if value is not None:
2153
1066
self.checked_ok()
2154
1067
return
2155
return datetime_to_dbus(self.last_checked_ok)
2156
2157
# LastCheckerStatus - property
2158
@dbus_service_property(_interface, signature="n", access="read")
2159
def LastCheckerStatus_dbus_property(self):
2160
return dbus.Int16(self.last_checker_status)
2161
2162
# Expires - property
2163
@dbus_service_property(_interface, signature="s", access="read")
2164
def Expires_dbus_property(self):
2165
return datetime_to_dbus(self.expires)
2166
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
2167
1073
# LastApprovalRequest - property
2168
1074
@dbus_service_property(_interface, signature="s", access="read")
2169
1075
def LastApprovalRequest_dbus_property(self):
2170
return datetime_to_dbus(self.last_approval_request)
2171
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
2172
1082
# Timeout - property
2173
@dbus_service_property(_interface,
2174
signature="t",
1083
@dbus_service_property(_interface, signature="t",
2175
1084
access="readwrite")
2176
1085
def Timeout_dbus_property(self, value=None):
2177
1086
if value is None: # get
2178
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2179
old_timeout = self.timeout
1087
return dbus.UInt64(self.timeout_milliseconds())
2180
1088
self.timeout = datetime.timedelta(0, 0, 0, value)
2181
# Reschedule disabling
2182
if self.enabled:
2183
now = datetime.datetime.utcnow()
2184
self.expires += self.timeout - old_timeout
2185
if self.expires <= now:
2186
# The timeout has passed
2187
self.disable()
2188
else:
2189
if (getattr(self, "disable_initiator_tag", None)
2190
is None):
2191
return
2192
GLib.source_remove(self.disable_initiator_tag)
2193
self.disable_initiator_tag = GLib.timeout_add(
2194
int((self.expires - now).total_seconds() * 1000),
2195
self.disable)
2196
2197
# ExtendedTimeout - property
2198
@dbus_service_property(_interface,
2199
signature="t",
2200
access="readwrite")
2201
def ExtendedTimeout_dbus_property(self, value=None):
2202
if value is None: # get
2203
return dbus.UInt64(self.extended_timeout.total_seconds()
2204
* 1000)
2205
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2206
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
2207
1110
# Interval - property
2208
@dbus_service_property(_interface,
2209
signature="t",
1111
@dbus_service_property(_interface, signature="t",
2210
1112
access="readwrite")
2211
1113
def Interval_dbus_property(self, value=None):
2212
1114
if value is None: # get
2213
return dbus.UInt64(self.interval.total_seconds() * 1000)
1115
return dbus.UInt64(self.interval_milliseconds())
2214
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))
2215
1120
if getattr(self, "checker_initiator_tag", None) is None:
2216
1121
return
2217
if self.enabled:
2218
# Reschedule checker run
2219
GLib.source_remove(self.checker_initiator_tag)
2220
self.checker_initiator_tag = GLib.timeout_add(
2221
value, self.start_checker)
2222
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
2223
1127
2224
1128
# Checker - property
2225
@dbus_service_property(_interface,
2226
signature="s",
1129
@dbus_service_property(_interface, signature="s",
2227
1130
access="readwrite")
2228
1131
def Checker_dbus_property(self, value=None):
2229
1132
if value is None: # get
2230
1133
return dbus.String(self.checker_command)
2231
self.checker_command = str(value)
2232
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
2233
1140
# CheckerRunning - property
2234
@dbus_service_property(_interface,
2235
signature="b",
1141
@dbus_service_property(_interface, signature="b",
2236
1142
access="readwrite")
2237
1143
def CheckerRunning_dbus_property(self, value=None):
2238
1144
if value is None: # get
2241
1147
self.start_checker()
2242
1148
else:
2243
1149
self.stop_checker()
2244
1150
2245
1151
# ObjectPath - property
2246
@dbus_annotations(
2247
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2248
"org.freedesktop.DBus.Deprecated": "true"})
2249
1152
@dbus_service_property(_interface, signature="o", access="read")
2250
1153
def ObjectPath_dbus_property(self):
2251
return self.dbus_object_path # is already a dbus.ObjectPath
2252
1154
return self.dbus_object_path # is already a dbus.ObjectPath
1155
2253
1156
# Secret = property
2254
@dbus_annotations(
2255
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2256
"invalidates"})
2257
@dbus_service_property(_interface,
2258
signature="ay",
2259
access="write",
2260
byte_arrays=True)
1157
@dbus_service_property(_interface, signature="ay",
1158
access="write", byte_arrays=True)
2261
1159
def Secret_dbus_property(self, value):
2262
self.secret = bytes(value)
2263
1160
self.secret = str(value)
1161
2264
1162
del _interface
2265
1163
2266
1164
2267
class ProxyClient:
2268
def __init__(self, child_pipe, key_id, fpr, address):
1165
class ProxyClient(object):
1166
def __init__(self, child_pipe, fpr, address):
2269
1167
self._pipe = child_pipe
2270
self._pipe.send(("init", key_id, fpr, address))
1168
self._pipe.send(('init', fpr, address))
2271
1169
if not self._pipe.recv():
2272
raise KeyError(key_id or fpr)
1170
raise KeyError()
2273
1171
2274
1172
def __getattribute__(self, name):
2275
if name == "_pipe":
1173
if(name == '_pipe'):
2276
1174
return super(ProxyClient, self).__getattribute__(name)
2277
self._pipe.send(("getattr", name))
1175
self._pipe.send(('getattr', name))
2278
1176
data = self._pipe.recv()
2279
if data[0] == "data":
1177
if data[0] == 'data':
2280
1178
return data[1]
2281
if data[0] == "function":
2282
1179
if data[0] == 'function':
2283
1180
def func(*args, **kwargs):
2284
self._pipe.send(("funcall", name, args, kwargs))
1181
self._pipe.send(('funcall', name, args, kwargs))
2285
1182
return self._pipe.recv()[1]
2286
2287
1183
return func
2288
1184
2289
1185
def __setattr__(self, name, value):
2290
if name == "_pipe":
1186
if(name == '_pipe'):
2291
1187
return super(ProxyClient, self).__setattr__(name, value)
2292
self._pipe.send(("setattr", name, value))
1188
self._pipe.send(('setattr', name, value))
2293
1189
2294
1190
2295
1191
class ClientHandler(socketserver.BaseRequestHandler, object):
2296
1192
"""A class to handle client connections.
2297
1193
2298
1194
Instantiated once for each connection to handle it.
2299
1195
Note: This will run in its own forked process."""
2300
1196
2301
1197
def handle(self):
2302
1198
with contextlib.closing(self.server.child_pipe) as child_pipe:
2303
log.info("TCP connection from: %s",
2304
str(self.client_address))
2305
log.debug("Pipe FD: %d", self.server.child_pipe.fileno())
2306
2307
session = gnutls.ClientSession(self.request)
2308
2309
# priority = ":".join(("NONE", "+VERS-TLS1.1",
2310
# "+AES-256-CBC", "+SHA1",
2311
# "+COMP-NULL", "+CTYPE-OPENPGP",
2312
# "+DHE-DSS"))
1199
logger.info("TCP connection from: %s",
1200
unicode(self.client_address))
1201
logger.debug("Pipe FD: %d",
1202
self.server.child_pipe.fileno())
1203
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"))
2313
1218
# Use a fallback default, since this MUST be set.
2314
1219
priority = self.server.gnutls_priority
2315
1220
if priority is None:
2316
1221
priority = "NORMAL"
2317
gnutls.priority_set_direct(session,
2318
priority.encode("utf-8"), None)
1222
(gnutls.library.functions
1223
.gnutls_priority_set_direct(session._c_object,
1224
priority, None))
2319
1225
2320
1226
# Start communication using the Mandos protocol
2321
1227
# Get protocol number
2322
1228
line = self.request.makefile().readline()
2323
log.debug("Protocol version: %r", line)
1229
logger.debug("Protocol version: %r", line)
2324
1230
try:
2325
1231
if int(line.strip().split()[0]) > 1:
2326
raise RuntimeError(line)
1232
raise RuntimeError
2327
1233
except (ValueError, IndexError, RuntimeError) as error:
2328
log.error("Unknown protocol version: %s", error)
1234
logger.error("Unknown protocol version: %s", error)
2329
1235
return
2330
1236
2331
1237
# Start GnuTLS connection
2332
1238
try:
2333
1239
session.handshake()
2334
except gnutls.Error as error:
2335
log.warning("Handshake failed: %s", error)
1240
except gnutls.errors.GNUTLSError as error:
1241
logger.warning("Handshake failed: %s", error)
2336
1242
# Do not run session.bye() here: the session is not
2337
1243
# established. Just abandon the request.
2338
1244
return
2339
log.debug("Handshake succeeded")
1245
logger.debug("Handshake succeeded")
2340
1246
2341
1247
approval_required = False
2342
1248
try:
2343
if gnutls.has_rawpk:
2344
fpr = b""
2345
try:
2346
key_id = self.key_id(
2347
self.peer_certificate(session))
2348
except (TypeError, gnutls.Error) as error:
2349
log.warning("Bad certificate: %s", error)
2350
return
2351
log.debug("Key ID: %s",
2352
key_id.decode("utf-8",
2353
errors="replace"))
2354
2355
else:
2356
key_id = b""
2357
try:
2358
fpr = self.fingerprint(
2359
self.peer_certificate(session))
2360
except (TypeError, gnutls.Error) as error:
2361
log.warning("Bad certificate: %s", error)
2362
return
2363
log.debug("Fingerprint: %s", fpr)
2364
2365
try:
2366
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,
2367
1260
self.client_address)
2368
1261
except KeyError:
2369
1262
return
2370
1263
2371
1264
if client.approval_delay:
2372
1265
delay = client.approval_delay
2373
1266
client.approvals_pending += 1
2374
1267
approval_required = True
2375
1268
2376
1269
while True:
2377
1270
if not client.enabled:
2378
log.info("Client %s is disabled", client.name)
1271
logger.info("Client %s is disabled",
1272
client.name)
2379
1273
if self.server.use_dbus:
2380
1274
# Emit D-Bus signal
2381
client.Rejected("Disabled")
1275
client.Rejected("Disabled")
2382
1276
return
2383
2384
if client.approved or not client.approval_delay:
2385
# 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
2386
1280
break
2387
elif client.approved is None:
2388
log.info("Client %s needs approval",
2389
client.name)
1281
elif client._approved is None:
1282
logger.info("Client %s needs approval",
1283
client.name)
2390
1284
if self.server.use_dbus:
2391
1285
# Emit D-Bus signal
2392
1286
client.NeedApproval(
2393
client.approval_delay.total_seconds()
2394
* 1000, client.approved_by_default)
1287
client.approval_delay_milliseconds(),
1288
client.approved_by_default)
2395
1289
else:
2396
log.warning("Client %s was not approved",
2397
client.name)
1290
logger.warning("Client %s was not approved",
1291
client.name)
2398
1292
if self.server.use_dbus:
2399
1293
# Emit D-Bus signal
2400
1294
client.Rejected("Denied")
2401
1295
return
2402
2403
# wait until timeout or approved
1296
1297
#wait until timeout or approved
1298
#x = float(client._timedelta_to_milliseconds(delay))
2404
1299
time = datetime.datetime.now()
2405
1300
client.changedstate.acquire()
2406
client.changedstate.wait(delay.total_seconds())
1301
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2407
1302
client.changedstate.release()
2408
1303
time2 = datetime.datetime.now()
2409
1304
if (time2 - time) >= delay:
2410
1305
if not client.approved_by_default:
2411
log.warning("Client %s timed out while"
2412
" waiting for approval",
2413
client.name)
1306
logger.warning("Client %s timed out while"
1307
" waiting for approval",
1308
client.name)
2414
1309
if self.server.use_dbus:
2415
1310
# Emit D-Bus signal
2416
1311
client.Rejected("Approval timed out")
2419
1314
break
2420
1315
else:
2421
1316
delay -= time2 - time
2422
2423
try:
2424
session.send(client.secret)
2425
except gnutls.Error as error:
2426
log.warning("gnutls send failed", exc_info=error)
2427
return
2428
2429
log.info("Sending secret to %s", client.name)
2430
# bump the timeout using extended_timeout
2431
client.bump_timeout(client.extended_timeout)
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
1329
1330
logger.info("Sending secret to %s", client.name)
1331
# bump the timeout as if seen
1332
client.checked_ok()
2432
1333
if self.server.use_dbus:
2433
1334
# Emit D-Bus signal
2434
1335
client.GotSecret()
2435
1336
2436
1337
finally:
2437
1338
if approval_required:
2438
1339
client.approvals_pending -= 1
2439
1340
try:
2440
1341
session.bye()
2441
except gnutls.Error as error:
2442
log.warning("GnuTLS bye failed", exc_info=error)
2443
1342
except gnutls.errors.GNUTLSError as error:
1343
logger.warning("GnuTLS bye failed")
1344
2444
1345
@staticmethod
2445
1346
def peer_certificate(session):
2446
"Return the peer's certificate as a bytestring"
2447
try:
2448
cert_type = gnutls.certificate_type_get2(
2449
session, gnutls.CTYPE_PEERS)
2450
except AttributeError:
2451
cert_type = gnutls.certificate_type_get(session)
2452
if gnutls.has_rawpk:
2453
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2454
else:
2455
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2456
# If not a valid certificate type...
2457
if cert_type not in valid_cert_types:
2458
log.info("Cert type %r not in %r", cert_type,
2459
valid_cert_types)
2460
# ...return invalid data
2461
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
2462
1354
list_size = ctypes.c_uint(1)
2463
cert_list = (gnutls.certificate_get_peers
2464
(session, ctypes.byref(list_size)))
1355
cert_list = (gnutls.library.functions
1356
.gnutls_certificate_get_peers
1357
(session._c_object, ctypes.byref(list_size)))
2465
1358
if not bool(cert_list) and list_size.value != 0:
2466
raise gnutls.Error("error getting peer certificate")
1359
raise gnutls.errors.GNUTLSError("error getting peer"
1360
" certificate")
2467
1361
if list_size.value == 0:
2468
1362
return None
2469
1363
cert = cert_list[0]
2470
1364
return ctypes.string_at(cert.data, cert.size)
2471
2472
@staticmethod
2473
def key_id(certificate):
2474
"Convert a certificate bytestring to a hexdigit key ID"
2475
# New GnuTLS "datum" with the public key
2476
datum = gnutls.datum_t(
2477
ctypes.cast(ctypes.c_char_p(certificate),
2478
ctypes.POINTER(ctypes.c_ubyte)),
2479
ctypes.c_uint(len(certificate)))
2480
# XXX all these need to be created in the gnutls "module"
2481
# New empty GnuTLS certificate
2482
pubkey = gnutls.pubkey_t()
2483
gnutls.pubkey_init(ctypes.byref(pubkey))
2484
# Import the raw public key into the certificate
2485
gnutls.pubkey_import(pubkey,
2486
ctypes.byref(datum),
2487
gnutls.X509_FMT_DER)
2488
# New buffer for the key ID
2489
buf = ctypes.create_string_buffer(32)
2490
buf_len = ctypes.c_size_t(len(buf))
2491
# Get the key ID from the raw public key into the buffer
2492
gnutls.pubkey_get_key_id(
2493
pubkey,
2494
gnutls.KEYID_USE_SHA256,
2495
ctypes.cast(ctypes.byref(buf),
2496
ctypes.POINTER(ctypes.c_ubyte)),
2497
ctypes.byref(buf_len))
2498
# Deinit the certificate
2499
gnutls.pubkey_deinit(pubkey)
2500
2501
# Convert the buffer to a Python bytestring
2502
key_id = ctypes.string_at(buf, buf_len.value)
2503
# Convert the bytestring to hexadecimal notation
2504
hex_key_id = binascii.hexlify(key_id).upper()
2505
return hex_key_id
2506
1365
2507
1366
@staticmethod
2508
1367
def fingerprint(openpgp):
2509
1368
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2510
1369
# New GnuTLS "datum" with the OpenPGP public key
2511
datum = gnutls.datum_t(
2512
ctypes.cast(ctypes.c_char_p(openpgp),
2513
ctypes.POINTER(ctypes.c_ubyte)),
2514
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))))
2515
1375
# New empty GnuTLS certificate
2516
crt = gnutls.openpgp_crt_t()
2517
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)))
2518
1379
# Import the OpenPGP public key into the certificate
2519
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2520
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))
2521
1384
# Verify the self signature in the key
2522
1385
crtverify = ctypes.c_uint()
2523
gnutls.openpgp_crt_verify_self(crt, 0,
2524
ctypes.byref(crtverify))
1386
(gnutls.library.functions
1387
.gnutls_openpgp_crt_verify_self(crt, 0,
1388
ctypes.byref(crtverify)))
2525
1389
if crtverify.value != 0:
2526
gnutls.openpgp_crt_deinit(crt)
2527
raise gnutls.CertificateSecurityError(code
2528
=crtverify.value)
1390
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1391
raise (gnutls.errors.CertificateSecurityError
1392
("Verify failed"))
2529
1393
# New buffer for the fingerprint
2530
1394
buf = ctypes.create_string_buffer(20)
2531
1395
buf_len = ctypes.c_size_t()
2532
1396
# Get the fingerprint from the certificate into the buffer
2533
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2534
ctypes.byref(buf_len))
1397
(gnutls.library.functions
1398
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1399
ctypes.byref(buf_len)))
2535
1400
# Deinit the certificate
2536
gnutls.openpgp_crt_deinit(crt)
1401
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2537
1402
# Convert the buffer to a Python bytestring
2538
1403
fpr = ctypes.string_at(buf, buf_len.value)
2539
1404
# Convert the bytestring to hexadecimal notation
2540
hex_fpr = binascii.hexlify(fpr).upper()
1405
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2541
1406
return hex_fpr
2542
1407
2543
1408
2544
class MultiprocessingMixIn:
1409
class MultiprocessingMixIn(object):
2545
1410
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2546
2547
1411
def sub_process_main(self, request, address):
2548
1412
try:
2549
1413
self.finish_request(request, address)
2550
except Exception:
1414
except:
2551
1415
self.handle_error(request, address)
2552
1416
self.close_request(request)
2553
1417
2554
1418
def process_request(self, request, address):
2555
1419
"""Start a new process to process the request."""
2556
proc = multiprocessing.Process(target=self.sub_process_main,
2557
args=(request, address))
2558
proc.start()
2559
return proc
2560
2561
2562
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1420
multiprocessing.Process(target = self.sub_process_main,
1421
args = (request, address)).start()
1422
1423
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2563
1424
""" adds a pipe to the MixIn """
2564
2565
1425
def process_request(self, request, client_address):
2566
1426
"""Overrides and wraps the original process_request().
2567
1427
2568
1428
This function creates a new pipe in self.pipe
2569
1429
"""
2570
1430
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2571
1431
2572
proc = MultiprocessingMixIn.process_request(self, request,
2573
client_address)
1432
super(MultiprocessingMixInWithPipe,
1433
self).process_request(request, client_address)
2574
1434
self.child_pipe.close()
2575
self.add_pipe(parent_pipe, proc)
1435
self.add_pipe(parent_pipe)
2576
1436
2577
def add_pipe(self, parent_pipe, proc):
1437
def add_pipe(self, parent_pipe):
2578
1438
"""Dummy function; override as necessary"""
2579
raise NotImplementedError()
2580
1439
raise NotImplementedError
2581
1440
2582
1441
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2583
socketserver.TCPServer):
2584
"""IPv6-capable TCP server. Accepts None as address and/or port
2585
1442
socketserver.TCPServer, object):
1443
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1444
2586
1445
Attributes:
2587
1446
enabled: Boolean; whether this server is activated yet
2588
1447
interface: None or a network interface name (string)
2589
1448
use_ipv6: Boolean; to use IPv6 or not
2590
1449
"""
2591
2592
1450
def __init__(self, server_address, RequestHandlerClass,
2593
interface=None,
2594
use_ipv6=True,
2595
socketfd=None):
2596
"""If socketfd is set, use that file descriptor instead of
2597
creating a new one with socket.socket().
2598
"""
1451
interface=None, use_ipv6=True):
2599
1452
self.interface = interface
2600
1453
if use_ipv6:
2601
1454
self.address_family = socket.AF_INET6
2602
if socketfd is not None:
2603
# Save the file descriptor
2604
self.socketfd = socketfd
2605
# Save the original socket.socket() function
2606
self.socket_socket = socket.socket
2607
2608
# To implement --socket, we monkey patch socket.socket.
2609
#
2610
# (When socketserver.TCPServer is a new-style class, we
2611
# could make self.socket into a property instead of monkey
2612
# patching socket.socket.)
2613
#
2614
# Create a one-time-only replacement for socket.socket()
2615
@functools.wraps(socket.socket)
2616
def socket_wrapper(*args, **kwargs):
2617
# Restore original function so subsequent calls are
2618
# not affected.
2619
socket.socket = self.socket_socket
2620
del self.socket_socket
2621
# This time only, return a new socket object from the
2622
# saved file descriptor.
2623
return socket.fromfd(self.socketfd, *args, **kwargs)
2624
# Replace socket.socket() function with wrapper
2625
socket.socket = socket_wrapper
2626
# The socketserver.TCPServer.__init__ will call
2627
# socket.socket(), which might be our replacement,
2628
# socket_wrapper(), if socketfd was set.
2629
1455
socketserver.TCPServer.__init__(self, server_address,
2630
1456
RequestHandlerClass)
2631
2632
1457
def server_bind(self):
2633
1458
"""This overrides the normal server_bind() function
2634
1459
to bind to an interface if one was specified, and also NOT to
2635
1460
bind to an address or port if they were not specified."""
2636
global SO_BINDTODEVICE
2637
1461
if self.interface is not None:
2638
1462
if SO_BINDTODEVICE is None:
2639
# Fall back to a hard-coded value which seems to be
2640
# common enough.
2641
log.warning("SO_BINDTODEVICE not found, trying 25")
2642
SO_BINDTODEVICE = 25
2643
try:
2644
self.socket.setsockopt(
2645
socket.SOL_SOCKET, SO_BINDTODEVICE,
2646
(self.interface + "\0").encode("utf-8"))
2647
except socket.error as error:
2648
if error.errno == errno.EPERM:
2649
log.error("No permission to bind to interface %s",
2650
self.interface)
2651
elif error.errno == errno.ENOPROTOOPT:
2652
log.error("SO_BINDTODEVICE not available; cannot"
2653
" bind to interface %s", self.interface)
2654
elif error.errno == errno.ENODEV:
2655
log.error("Interface %s does not exist, cannot"
2656
" bind", self.interface)
2657
else:
2658
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
2659
1483
# Only bind(2) the socket if we really need to.
2660
1484
if self.server_address[0] or self.server_address[1]:
2661
if self.server_address[1]:
2662
self.allow_reuse_address = True
2663
1485
if not self.server_address[0]:
2664
1486
if self.address_family == socket.AF_INET6:
2665
any_address = "::" # in6addr_any
1487
any_address = "::" # in6addr_any
2666
1488
else:
2667
any_address = "0.0.0.0" # INADDR_ANY
1489
any_address = socket.INADDR_ANY
2668
1490
self.server_address = (any_address,
2669
1491
self.server_address[1])
2670
1492
elif not self.server_address[1]:
2671
self.server_address = (self.server_address[0], 0)
1493
self.server_address = (self.server_address[0],
1494
0)
2672
1495
# if self.interface:
2673
1496
# self.server_address = (self.server_address[0],
2674
1497
# 0, # port
2680
1503
2681
1504
class MandosServer(IPv6_TCPServer):
2682
1505
"""Mandos server.
2683
1506
2684
1507
Attributes:
2685
1508
clients: set of Client objects
2686
1509
gnutls_priority GnuTLS priority string
2687
1510
use_dbus: Boolean; to emit D-Bus signals or not
2688
2689
Assumes a GLib.MainLoop event loop.
1511
1512
Assumes a gobject.MainLoop event loop.
2690
1513
"""
2691
2692
1514
def __init__(self, server_address, RequestHandlerClass,
2693
interface=None,
2694
use_ipv6=True,
2695
clients=None,
2696
gnutls_priority=None,
2697
use_dbus=True,
2698
socketfd=None):
1515
interface=None, use_ipv6=True, clients=None,
1516
gnutls_priority=None, use_dbus=True):
2699
1517
self.enabled = False
2700
1518
self.clients = clients
2701
1519
if self.clients is None:
2702
self.clients = {}
1520
self.clients = set()
2703
1521
self.use_dbus = use_dbus
2704
1522
self.gnutls_priority = gnutls_priority
2705
1523
IPv6_TCPServer.__init__(self, server_address,
2706
1524
RequestHandlerClass,
2707
interface=interface,
2708
use_ipv6=use_ipv6,
2709
socketfd=socketfd)
2710
1525
interface = interface,
1526
use_ipv6 = use_ipv6)
2711
1527
def server_activate(self):
2712
1528
if self.enabled:
2713
1529
return socketserver.TCPServer.server_activate(self)
2714
2715
1530
def enable(self):
2716
1531
self.enabled = True
2717
2718
def add_pipe(self, parent_pipe, proc):
1532
def add_pipe(self, parent_pipe):
2719
1533
# Call "handle_ipc" for both data and EOF events
2720
GLib.io_add_watch(
2721
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2722
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2723
functools.partial(self.handle_ipc,
2724
parent_pipe=parent_pipe,
2725
proc=proc))
2726
2727
def handle_ipc(self, source, condition,
2728
parent_pipe=None,
2729
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,
2730
1540
client_object=None):
2731
# error, or the other end of multiprocessing.Pipe has closed
2732
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2733
# Wait for other process to exit
2734
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):
2735
1557
return False
2736
1558
2737
1559
# Read a request from the child
2738
1560
request = parent_pipe.recv()
2739
1561
command = request[0]
2740
2741
if command == "init":
2742
key_id = request[1].decode("ascii")
2743
fpr = request[2].decode("ascii")
2744
address = request[3]
2745
2746
for c in self.clients.values():
2747
if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"
2748
"27AE41E4649B934CA495991B7852B855"):
2749
continue
2750
if key_id and c.key_id == key_id:
2751
client = c
2752
break
2753
if fpr and c.fingerprint == fpr:
1562
1563
if command == 'init':
1564
fpr = request[1]
1565
address = request[2]
1566
1567
for c in self.clients:
1568
if c.fingerprint == fpr:
2754
1569
client = c
2755
1570
break
2756
1571
else:
2757
log.info("Client not found for key ID: %s, address:"
2758
" %s", key_id or fpr, address)
1572
logger.info("Client not found for fingerprint: %s, ad"
1573
"dress: %s", fpr, address)
2759
1574
if self.use_dbus:
2760
1575
# Emit D-Bus signal
2761
mandos_dbus_service.ClientNotFound(key_id or fpr,
2762
address[0])
1576
mandos_dbus_service.ClientNotFound(fpr, address[0])
2763
1577
parent_pipe.send(False)
2764
1578
return False
2765
2766
GLib.io_add_watch(
2767
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2768
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2769
functools.partial(self.handle_ipc,
2770
parent_pipe=parent_pipe,
2771
proc=proc,
2772
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))
2773
1585
parent_pipe.send(True)
2774
# remove the old hook in favor of the new above hook on
2775
# same fileno
1586
# remove the old hook in favor of the new above hook on same fileno
2776
1587
return False
2777
if command == "funcall":
1588
if command == 'funcall':
2778
1589
funcname = request[1]
2779
1590
args = request[2]
2780
1591
kwargs = request[3]
2781
2782
parent_pipe.send(("data", getattr(client_object,
2783
funcname)(*args,
2784
**kwargs)))
2785
2786
if command == "getattr":
1592
1593
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1594
1595
if command == 'getattr':
2787
1596
attrname = request[1]
2788
if isinstance(client_object.__getattribute__(attrname),
2789
collections.abc.Callable):
2790
parent_pipe.send(("function", ))
1597
if callable(client_object.__getattribute__(attrname)):
1598
parent_pipe.send(('function',))
2791
1599
else:
2792
parent_pipe.send((
2793
"data", client_object.__getattribute__(attrname)))
2794
2795
if command == "setattr":
1600
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1601
1602
if command == 'setattr':
2796
1603
attrname = request[1]
2797
1604
value = request[2]
2798
1605
setattr(client_object, attrname, value)
2800
1607
return True
2801
1608
2802
1609
2803
def rfc3339_duration_to_delta(duration):
2804
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2805
2806
>>> timedelta = datetime.timedelta
2807
>>> rfc3339_duration_to_delta("P7D") == timedelta(7)
2808
True
2809
>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)
2810
True
2811
>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)
2812
True
2813
>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)
2814
True
2815
>>> rfc3339_duration_to_delta("P1W") == timedelta(7)
2816
True
2817
>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)
2818
True
2819
>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)
2820
True
2821
>>> del timedelta
2822
"""
2823
2824
# Parsing an RFC 3339 duration with regular expressions is not
2825
# possible - there would have to be multiple places for the same
2826
# values, like seconds. The current code, while more esoteric, is
2827
# cleaner without depending on a parsing library. If Python had a
2828
# built-in library for parsing we would use it, but we'd like to
2829
# avoid excessive use of external libraries.
2830
2831
# New type for defining tokens, syntax, and semantics all-in-one
2832
Token = collections.namedtuple("Token", (
2833
"regexp", # To match token; if "value" is not None, must have
2834
# a "group" containing digits
2835
"value", # datetime.timedelta or None
2836
"followers")) # Tokens valid after this token
2837
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2838
# the "duration" ABNF definition in RFC 3339, Appendix A.
2839
token_end = Token(re.compile(r"$"), None, frozenset())
2840
token_second = Token(re.compile(r"(\d+)S"),
2841
datetime.timedelta(seconds=1),
2842
frozenset((token_end, )))
2843
token_minute = Token(re.compile(r"(\d+)M"),
2844
datetime.timedelta(minutes=1),
2845
frozenset((token_second, token_end)))
2846
token_hour = Token(re.compile(r"(\d+)H"),
2847
datetime.timedelta(hours=1),
2848
frozenset((token_minute, token_end)))
2849
token_time = Token(re.compile(r"T"),
2850
None,
2851
frozenset((token_hour, token_minute,
2852
token_second)))
2853
token_day = Token(re.compile(r"(\d+)D"),
2854
datetime.timedelta(days=1),
2855
frozenset((token_time, token_end)))
2856
token_month = Token(re.compile(r"(\d+)M"),
2857
datetime.timedelta(weeks=4),
2858
frozenset((token_day, token_end)))
2859
token_year = Token(re.compile(r"(\d+)Y"),
2860
datetime.timedelta(weeks=52),
2861
frozenset((token_month, token_end)))
2862
token_week = Token(re.compile(r"(\d+)W"),
2863
datetime.timedelta(weeks=1),
2864
frozenset((token_end, )))
2865
token_duration = Token(re.compile(r"P"), None,
2866
frozenset((token_year, token_month,
2867
token_day, token_time,
2868
token_week)))
2869
# Define starting values:
2870
# Value so far
2871
value = datetime.timedelta()
2872
found_token = None
2873
# Following valid tokens
2874
followers = frozenset((token_duration, ))
2875
# String left to parse
2876
s = duration
2877
# Loop until end token is found
2878
while found_token is not token_end:
2879
# Search for any currently valid tokens
2880
for token in followers:
2881
match = token.regexp.match(s)
2882
if match is not None:
2883
# Token found
2884
if token.value is not None:
2885
# Value found, parse digits
2886
factor = int(match.group(1), 10)
2887
# Add to value so far
2888
value += factor * token.value
2889
# Strip token from string
2890
s = token.regexp.sub("", s, 1)
2891
# Go to found token
2892
found_token = token
2893
# Set valid next tokens
2894
followers = found_token.followers
2895
break
2896
else:
2897
# No currently valid tokens were found
2898
raise ValueError("Invalid RFC 3339 duration: {!r}"
2899
.format(duration))
2900
# End token found
2901
return value
2902
2903
2904
1610
def string_to_delta(interval):
2905
1611
"""Parse a string and return a datetime.timedelta
2906
2907
>>> string_to_delta("7d") == datetime.timedelta(7)
2908
True
2909
>>> string_to_delta("60s") == datetime.timedelta(0, 60)
2910
True
2911
>>> string_to_delta("60m") == datetime.timedelta(0, 3600)
2912
True
2913
>>> string_to_delta("24h") == datetime.timedelta(1)
2914
True
2915
>>> string_to_delta("1w") == datetime.timedelta(7)
2916
True
2917
>>> string_to_delta("5m 30s") == datetime.timedelta(0, 330)
2918
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)
2919
1625
"""
2920
2921
try:
2922
return rfc3339_duration_to_delta(interval)
2923
except ValueError:
2924
pass
2925
2926
1626
timevalue = datetime.timedelta(0)
2927
1627
for s in interval.split():
2928
1628
try:
2929
suffix = s[-1]
1629
suffix = unicode(s[-1])
2930
1630
value = int(s[:-1])
2931
1631
if suffix == "d":
2932
1632
delta = datetime.timedelta(value)
2939
1639
elif suffix == "w":
2940
1640
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2941
1641
else:
2942
raise ValueError("Unknown suffix {!r}".format(suffix))
2943
except IndexError as e:
1642
raise ValueError("Unknown suffix %r" % suffix)
1643
except (ValueError, IndexError) as e:
2944
1644
raise ValueError(*(e.args))
2945
1645
timevalue += delta
2946
1646
return timevalue
2947
1647
2948
1648
2949
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):
2950
1674
"""See daemon(3). Standard BSD Unix function.
2951
1675
2952
1676
This should really exist as os.daemon, but it doesn't (yet)."""
2953
1677
if os.fork():
2954
1678
sys.exit()
2959
1683
sys.exit()
2960
1684
if not noclose:
2961
1685
# Close all standard open file descriptors
2962
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1686
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2963
1687
if not stat.S_ISCHR(os.fstat(null).st_mode):
2964
1688
raise OSError(errno.ENODEV,
2965
"{} not a character device"
2966
.format(os.devnull))
1689
"%s not a character device"
1690
% os.path.devnull)
2967
1691
os.dup2(null, sys.stdin.fileno())
2968
1692
os.dup2(null, sys.stdout.fileno())
2969
1693
os.dup2(null, sys.stderr.fileno())
2972
1696
2973
1697
2974
1698
def main():
2975
1699
2976
1700
##################################################################
2977
1701
# Parsing of options, both command line and config file
2978
1702
2979
1703
parser = argparse.ArgumentParser()
2980
1704
parser.add_argument("-v", "--version", action="version",
2981
version="%(prog)s {}".format(version),
1705
version = "%%(prog)s %s" % version,
2982
1706
help="show version number and exit")
2983
1707
parser.add_argument("-i", "--interface", metavar="IF",
2984
1708
help="Bind to interface IF")
2990
1714
help="Run self-test")
2991
1715
parser.add_argument("--debug", action="store_true",
2992
1716
help="Debug mode; run in foreground and log"
2993
" to terminal", default=None)
1717
" to terminal")
2994
1718
parser.add_argument("--debuglevel", metavar="LEVEL",
2995
1719
help="Debug level for stdout output")
2996
1720
parser.add_argument("--priority", help="GnuTLS"
3003
1727
" files")
3004
1728
parser.add_argument("--no-dbus", action="store_false",
3005
1729
dest="use_dbus", help="Do not provide D-Bus"
3006
" system bus interface", default=None)
1730
" system bus interface")
3007
1731
parser.add_argument("--no-ipv6", action="store_false",
3008
dest="use_ipv6", help="Do not use IPv6",
3009
default=None)
3010
parser.add_argument("--no-restore", action="store_false",
3011
dest="restore", help="Do not restore stored"
3012
" state", default=None)
3013
parser.add_argument("--socket", type=int,
3014
help="Specify a file descriptor to a network"
3015
" socket to use instead of creating one")
3016
parser.add_argument("--statedir", metavar="DIR",
3017
help="Directory to save/restore state in")
3018
parser.add_argument("--foreground", action="store_true",
3019
help="Run in foreground", default=None)
3020
parser.add_argument("--no-zeroconf", action="store_false",
3021
dest="zeroconf", help="Do not use Zeroconf",
3022
default=None)
3023
1732
dest="use_ipv6", help="Do not use IPv6")
3024
1733
options = parser.parse_args()
3025
1734
1735
if options.check:
1736
import doctest
1737
doctest.testmod()
1738
sys.exit()
1739
3026
1740
# Default values for config file for server-global settings
3027
if gnutls.has_rawpk:
3028
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3029
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3030
else:
3031
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3032
":+SIGN-DSA-SHA256")
3033
server_defaults = {"interface": "",
3034
"address": "",
3035
"port": "",
3036
"debug": "False",
3037
"priority": priority,
3038
"servicename": "Mandos",
3039
"use_dbus": "True",
3040
"use_ipv6": "True",
3041
"debuglevel": "",
3042
"restore": "True",
3043
"socket": "",
3044
"statedir": "/var/lib/mandos",
3045
"foreground": "False",
3046
"zeroconf": "True",
3047
}
3048
del priority
3049
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
3050
1753
# Parse config file for server-global settings
3051
server_config = configparser.ConfigParser(server_defaults)
1754
server_config = configparser.SafeConfigParser(server_defaults)
3052
1755
del server_defaults
3053
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3054
# 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
3055
1759
server_settings = server_config.defaults()
3056
1760
# Use the appropriate methods on the non-string config options
3057
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3058
"foreground", "zeroconf"):
1761
for option in ("debug", "use_dbus", "use_ipv6"):
3059
1762
server_settings[option] = server_config.getboolean("DEFAULT",
3060
1763
option)
3061
1764
if server_settings["port"]:
3062
1765
server_settings["port"] = server_config.getint("DEFAULT",
3063
1766
"port")
3064
if server_settings["socket"]:
3065
server_settings["socket"] = server_config.getint("DEFAULT",
3066
"socket")
3067
# Later, stdin will, and stdout and stderr might, be dup'ed
3068
# over with an opened os.devnull. But we don't want this to
3069
# happen with a supplied network socket.
3070
if 0 <= server_settings["socket"] <= 2:
3071
server_settings["socket"] = os.dup(server_settings
3072
["socket"])
3073
1767
del server_config
3074
1768
3075
1769
# Override the settings from the config file with command line
3076
1770
# options, if set.
3077
1771
for option in ("interface", "address", "port", "debug",
3078
"priority", "servicename", "configdir", "use_dbus",
3079
"use_ipv6", "debuglevel", "restore", "statedir",
3080
"socket", "foreground", "zeroconf"):
1772
"priority", "servicename", "configdir",
1773
"use_dbus", "use_ipv6", "debuglevel"):
3081
1774
value = getattr(options, option)
3082
1775
if value is not None:
3083
1776
server_settings[option] = value
3084
1777
del options
3085
1778
# Force all strings to be unicode
3086
1779
for option in server_settings.keys():
3087
if isinstance(server_settings[option], bytes):
3088
server_settings[option] = (server_settings[option]
3089
.decode("utf-8"))
3090
# Force all boolean options to be boolean
3091
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3092
"foreground", "zeroconf"):
3093
server_settings[option] = bool(server_settings[option])
3094
# Debug implies foreground
3095
if server_settings["debug"]:
3096
server_settings["foreground"] = True
1780
if type(server_settings[option]) is str:
1781
server_settings[option] = unicode(server_settings[option])
3097
1782
# Now we have our good server settings in "server_settings"
3098
1783
3099
1784
##################################################################
3100
3101
if (not server_settings["zeroconf"]
3102
and not (server_settings["port"]
3103
or server_settings["socket"] != "")):
3104
parser.error("Needs port or socket to work without Zeroconf")
3105
1785
3106
1786
# For convenience
3107
1787
debug = server_settings["debug"]
3108
1788
debuglevel = server_settings["debuglevel"]
3109
1789
use_dbus = server_settings["use_dbus"]
3110
1790
use_ipv6 = server_settings["use_ipv6"]
3111
stored_state_path = os.path.join(server_settings["statedir"],
3112
stored_state_file)
3113
foreground = server_settings["foreground"]
3114
zeroconf = server_settings["zeroconf"]
3115
3116
if debug:
3117
initlogger(debug, logging.DEBUG)
3118
else:
3119
if not debuglevel:
3120
initlogger(debug)
3121
else:
3122
level = getattr(logging, debuglevel.upper())
3123
initlogger(debug, level)
3124
1791
3125
1792
if server_settings["servicename"] != "Mandos":
3126
syslogger.setFormatter(
3127
logging.Formatter("Mandos ({}) [%(process)d]:"
3128
" %(levelname)s: %(message)s".format(
3129
server_settings["servicename"])))
3130
1793
syslogger.setFormatter(logging.Formatter
1794
('Mandos (%s) [%%(process)d]:'
1795
' %%(levelname)s: %%(message)s'
1796
% server_settings["servicename"]))
1797
3131
1798
# Parse config file with clients
3132
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)
3133
1807
client_config.read(os.path.join(server_settings["configdir"],
3134
1808
"clients.conf"))
3135
1809
3136
1810
global mandos_dbus_service
3137
1811
mandos_dbus_service = None
3138
3139
socketfd = None
3140
if server_settings["socket"] != "":
3141
socketfd = server_settings["socket"]
3142
tcp_server = MandosServer(
3143
(server_settings["address"], server_settings["port"]),
3144
ClientHandler,
3145
interface=(server_settings["interface"] or None),
3146
use_ipv6=use_ipv6,
3147
gnutls_priority=server_settings["priority"],
3148
use_dbus=use_dbus,
3149
socketfd=socketfd)
3150
if not foreground:
3151
pidfilename = "/run/mandos.pid"
3152
if not os.path.isdir("/run/."):
3153
pidfilename = "/var/run/mandos.pid"
3154
pidfile = None
3155
try:
3156
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3157
except IOError as e:
3158
log.error("Could not open file %r", pidfilename,
3159
exc_info=e)
3160
3161
for name, group in (("_mandos", "_mandos"),
3162
("mandos", "mandos"),
3163
("nobody", "nogroup")):
3164
try:
3165
uid = pwd.getpwnam(name).pw_uid
3166
gid = pwd.getpwnam(group).pw_gid
3167
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
3168
1836
except KeyError:
3169
continue
3170
else:
3171
uid = 65534
3172
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
3173
1843
try:
3174
1844
os.setgid(gid)
3175
1845
os.setuid(uid)
3176
log.debug("Did setuid/setgid to %s:%s", uid, gid)
3177
1846
except OSError as error:
3178
log.warning("Failed to setuid/setgid to %s:%s: %s", uid, gid,
3179
os.strerror(error.errno))
3180
if error.errno != errno.EPERM:
3181
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)
3182
1857
3183
1858
if debug:
3184
1859
# Enable all possible GnuTLS debugging
3185
1860
3186
1861
# "Use a log level over 10 to enable all debugging options."
3187
1862
# - GnuTLS manual
3188
gnutls.global_set_log_level(11)
3189
3190
@gnutls.log_func
1863
gnutls.library.functions.gnutls_global_set_log_level(11)
1864
1865
@gnutls.library.types.gnutls_log_func
3191
1866
def debug_gnutls(level, string):
3192
log.debug("GnuTLS: %s",
3193
string[:-1].decode("utf-8", errors="replace"))
3194
3195
gnutls.global_set_log_function(debug_gnutls)
3196
1867
logger.debug("GnuTLS: %s", string[:-1])
1868
1869
(gnutls.library.functions
1870
.gnutls_global_set_log_function(debug_gnutls))
1871
3197
1872
# Redirect stdin so all checkers get /dev/null
3198
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1873
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3199
1874
os.dup2(null, sys.stdin.fileno())
3200
1875
if null > 2:
3201
1876
os.close(null)
3202
1877
else:
1878
# No console logging
1879
logger.removeHandler(console)
1880
3203
1881
# Need to fork before connecting to D-Bus
3204
if not foreground:
1882
if not debug:
3205
1883
# Close all input and output, do double fork, etc.
3206
1884
daemon()
3207
3208
if gi.version_info < (3, 10, 2):
3209
# multiprocessing will use threads, so before we use GLib we
3210
# need to inform GLib that threads will be used.
3211
GLib.threads_init()
3212
1885
3213
1886
global main_loop
3214
1887
# From the Avahi example code
3215
DBusGMainLoop(set_as_default=True)
3216
main_loop = GLib.MainLoop()
1888
DBusGMainLoop(set_as_default=True )
1889
main_loop = gobject.MainLoop()
3217
1890
bus = dbus.SystemBus()
3218
1891
# End of Avahi example code
3219
1892
if use_dbus:
3220
1893
try:
3221
bus_name = dbus.service.BusName("se.recompile.Mandos",
3222
bus,
3223
do_not_queue=True)
3224
old_bus_name = dbus.service.BusName(
3225
"se.bsnet.fukt.Mandos", bus,
3226
do_not_queue=True)
3227
except dbus.exceptions.DBusException as e:
3228
log.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")
3229
1898
use_dbus = False
3230
1899
server_settings["use_dbus"] = False
3231
1900
tcp_server.use_dbus = False
3232
if zeroconf:
3233
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3234
service = AvahiServiceToSyslog(
3235
name=server_settings["servicename"],
3236
servicetype="_mandos._tcp",
3237
protocol=protocol,
3238
bus=bus)
3239
if server_settings["interface"]:
3240
service.interface = if_nametoindex(
3241
server_settings["interface"].encode("utf-8"))
3242
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
3243
1909
global multiprocessing_manager
3244
1910
multiprocessing_manager = multiprocessing.Manager()
3245
1911
3246
1912
client_class = Client
3247
1913
if use_dbus:
3248
client_class = functools.partial(ClientDBus, bus=bus)
3249
3250
client_settings = Client.config_parser(client_config)
3251
old_client_settings = {}
3252
clients_data = {}
3253
3254
# This is used to redirect stdout and stderr for checker processes
3255
global wnull
3256
wnull = open(os.devnull, "w") # A writable /dev/null
3257
# Only used if server is running in foreground but not in debug
3258
# mode
3259
if debug or not foreground:
3260
wnull.close()
3261
3262
# Get client data and settings from last running state.
3263
if server_settings["restore"]:
3264
try:
3265
with open(stored_state_path, "rb") as stored_state:
3266
if sys.version_info.major == 2:
3267
clients_data, old_client_settings = pickle.load(
3268
stored_state)
3269
else:
3270
bytes_clients_data, bytes_old_client_settings = (
3271
pickle.load(stored_state, encoding="bytes"))
3272
# Fix bytes to strings
3273
# clients_data
3274
# .keys()
3275
clients_data = {(key.decode("utf-8")
3276
if isinstance(key, bytes)
3277
else key): value
3278
for key, value in
3279
bytes_clients_data.items()}
3280
del bytes_clients_data
3281
for key in clients_data:
3282
value = {(k.decode("utf-8")
3283
if isinstance(k, bytes) else k): v
3284
for k, v in
3285
clients_data[key].items()}
3286
clients_data[key] = value
3287
# .client_structure
3288
value["client_structure"] = [
3289
(s.decode("utf-8")
3290
if isinstance(s, bytes)
3291
else s) for s in
3292
value["client_structure"]]
3293
# .name, .host, and .checker_command
3294
for k in ("name", "host", "checker_command"):
3295
if isinstance(value[k], bytes):
3296
value[k] = value[k].decode("utf-8")
3297
if "key_id" not in value:
3298
value["key_id"] = ""
3299
elif "fingerprint" not in value:
3300
value["fingerprint"] = ""
3301
# old_client_settings
3302
# .keys()
3303
old_client_settings = {
3304
(key.decode("utf-8")
3305
if isinstance(key, bytes)
3306
else key): value
3307
for key, value in
3308
bytes_old_client_settings.items()}
3309
del bytes_old_client_settings
3310
# .host and .checker_command
3311
for value in old_client_settings.values():
3312
for attribute in ("host", "checker_command"):
3313
if isinstance(value[attribute], bytes):
3314
value[attribute] = (value[attribute]
3315
.decode("utf-8"))
3316
os.remove(stored_state_path)
3317
except IOError as e:
3318
if e.errno == errno.ENOENT:
3319
log.warning("Could not load persistent state:"
3320
" %s", os.strerror(e.errno))
3321
else:
3322
log.critical("Could not load persistent state:",
3323
exc_info=e)
3324
raise
3325
except EOFError as e:
3326
log.warning("Could not load persistent state: EOFError:",
3327
exc_info=e)
3328
3329
with PGPEngine() as pgp:
3330
for client_name, client in clients_data.items():
3331
# Skip removed clients
3332
if client_name not in client_settings:
3333
continue
3334
3335
# Decide which value to use after restoring saved state.
3336
# We have three different values: Old config file,
3337
# new config file, and saved state.
3338
# New config value takes precedence if it differs from old
3339
# config value, otherwise use saved state.
3340
for name, value in client_settings[client_name].items():
3341
try:
3342
# For each value in new config, check if it
3343
# differs from the old config value (Except for
3344
# the "secret" attribute)
3345
if (name != "secret"
3346
and (value !=
3347
old_client_settings[client_name][name])):
3348
client[name] = value
3349
except KeyError:
3350
pass
3351
3352
# Clients who has passed its expire date can still be
3353
# enabled if its last checker was successful. A Client
3354
# whose checker succeeded before we stored its state is
3355
# assumed to have successfully run all checkers during
3356
# downtime.
3357
if client["enabled"]:
3358
if datetime.datetime.utcnow() >= client["expires"]:
3359
if not client["last_checked_ok"]:
3360
log.warning("disabling client %s - Client"
3361
" never performed a successful"
3362
" checker", client_name)
3363
client["enabled"] = False
3364
elif client["last_checker_status"] != 0:
3365
log.warning("disabling client %s - Client"
3366
" last checker failed with error"
3367
" code %s", client_name,
3368
client["last_checker_status"])
3369
client["enabled"] = False
3370
else:
3371
client["expires"] = (
3372
datetime.datetime.utcnow()
3373
+ client["timeout"])
3374
log.debug("Last checker succeeded, keeping %s"
3375
" enabled", 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):
3376
1922
try:
3377
client["secret"] = pgp.decrypt(
3378
client["encrypted_secret"],
3379
client_settings[client_name]["secret"])
3380
except PGPError:
3381
# If decryption fails, we use secret from new settings
3382
log.debug("Failed to decrypt %s old secret",
3383
client_name)
3384
client["secret"] = (client_settings[client_name]
3385
["secret"])
3386
3387
# Add/remove clients based on new changes made to config
3388
for client_name in (set(old_client_settings)
3389
- set(client_settings)):
3390
del clients_data[client_name]
3391
for client_name in (set(client_settings)
3392
- set(old_client_settings)):
3393
clients_data[client_name] = client_settings[client_name]
3394
3395
# Create all client objects
3396
for client_name, client in clients_data.items():
3397
tcp_server.clients[client_name] = client_class(
3398
name=client_name,
3399
settings=client,
3400
server_settings=server_settings)
3401
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()))
3402
1932
if not tcp_server.clients:
3403
log.warning("No clients defined")
3404
3405
if not foreground:
3406
if pidfile is not None:
3407
pid = os.getpid()
3408
try:
3409
with pidfile:
3410
print(pid, file=pidfile)
3411
except IOError:
3412
log.error("Could not write to file %r with PID %d",
3413
pidfilename, pid)
3414
del pidfile
1933
logger.warning("No clients defined")
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
3415
1947
del pidfilename
3416
3417
for termsig in (signal.SIGHUP, signal.SIGTERM):
3418
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3419
lambda: main_loop.quit() and False)
3420
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
3421
1954
if use_dbus:
3422
3423
@alternate_dbus_interfaces(
3424
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3425
class MandosDBusService(DBusObjectWithObjectManager):
1955
class MandosDBusService(dbus.service.Object):
3426
1956
"""A D-Bus proxy object"""
3427
3428
1957
def __init__(self):
3429
1958
dbus.service.Object.__init__(self, bus, "/")
3430
3431
_interface = "se.recompile.Mandos"
3432
1959
_interface = "se.bsnet.fukt.Mandos"
1960
3433
1961
@dbus.service.signal(_interface, signature="o")
3434
1962
def ClientAdded(self, objpath):
3435
1963
"D-Bus signal"
3436
1964
pass
3437
1965
3438
1966
@dbus.service.signal(_interface, signature="ss")
3439
def ClientNotFound(self, key_id, address):
1967
def ClientNotFound(self, fingerprint, address):
3440
1968
"D-Bus signal"
3441
1969
pass
3442
3443
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3444
"true"})
1970
3445
1971
@dbus.service.signal(_interface, signature="os")
3446
1972
def ClientRemoved(self, objpath, name):
3447
1973
"D-Bus signal"
3448
1974
pass
3449
3450
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3451
"true"})
1975
3452
1976
@dbus.service.method(_interface, out_signature="ao")
3453
1977
def GetAllClients(self):
3454
1978
"D-Bus method"
3455
return dbus.Array(c.dbus_object_path for c in
3456
tcp_server.clients.values())
3457
3458
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3459
"true"})
1979
return dbus.Array(c.dbus_object_path
1980
for c in tcp_server.clients)
1981
3460
1982
@dbus.service.method(_interface,
3461
1983
out_signature="a{oa{sv}}")
3462
1984
def GetAllClientsWithProperties(self):
3463
1985
"D-Bus method"
3464
1986
return dbus.Dictionary(
3465
{c.dbus_object_path: c.GetAll(
3466
"se.recompile.Mandos.Client")
3467
for c in tcp_server.clients.values()},
1987
((c.dbus_object_path, c.GetAll(""))
1988
for c in tcp_server.clients),
3468
1989
signature="oa{sv}")
3469
1990
3470
1991
@dbus.service.method(_interface, in_signature="o")
3471
1992
def RemoveClient(self, object_path):
3472
1993
"D-Bus method"
3473
for c in tcp_server.clients.values():
1994
for c in tcp_server.clients:
3474
1995
if c.dbus_object_path == object_path:
3475
del tcp_server.clients[c.name]
1996
tcp_server.clients.remove(c)
3476
1997
c.remove_from_connection()
3477
# Don't signal the disabling
1998
# Don't signal anything except ClientRemoved
3478
1999
c.disable(quiet=True)
3479
# Emit D-Bus signal for removal
3480
self.client_removed_signal(c)
2000
# Emit D-Bus signal
2001
self.ClientRemoved(object_path, c.name)
3481
2002
return
3482
2003
raise KeyError(object_path)
3483
2004
3484
2005
del _interface
3485
3486
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3487
out_signature="a{oa{sa{sv}}}")
3488
def GetManagedObjects(self):
3489
"""D-Bus method"""
3490
return dbus.Dictionary(
3491
{client.dbus_object_path:
3492
dbus.Dictionary(
3493
{interface: client.GetAll(interface)
3494
for interface in
3495
client._get_all_interface_names()})
3496
for client in tcp_server.clients.values()})
3497
3498
def client_added_signal(self, client):
3499
"""Send the new standard signal and the old signal"""
3500
if use_dbus:
3501
# New standard signal
3502
self.InterfacesAdded(
3503
client.dbus_object_path,
3504
dbus.Dictionary(
3505
{interface: client.GetAll(interface)
3506
for interface in
3507
client._get_all_interface_names()}))
3508
# Old signal
3509
self.ClientAdded(client.dbus_object_path)
3510
3511
def client_removed_signal(self, client):
3512
"""Send the new standard signal and the old signal"""
3513
if use_dbus:
3514
# New standard signal
3515
self.InterfacesRemoved(
3516
client.dbus_object_path,
3517
client._get_all_interface_names())
3518
# Old signal
3519
self.ClientRemoved(client.dbus_object_path,
3520
client.name)
3521
2006
3522
2007
mandos_dbus_service = MandosDBusService()
3523
3524
# Save modules to variables to exempt the modules from being
3525
# unloaded before the function registered with atexit() is run.
3526
mp = multiprocessing
3527
wn = wnull
3528
2008
3529
2009
def cleanup():
3530
2010
"Cleanup function; run on exit"
3531
if zeroconf:
3532
service.cleanup()
3533
3534
mp.active_children()
3535
wn.close()
3536
if not (tcp_server.clients or client_settings):
3537
return
3538
3539
# Store client before exiting. Secrets are encrypted with key
3540
# based on what config file has. If config file is
3541
# removed/edited, old secret will thus be unrecovable.
3542
clients = {}
3543
with PGPEngine() as pgp:
3544
for client in tcp_server.clients.values():
3545
key = client_settings[client.name]["secret"]
3546
client.encrypted_secret = pgp.encrypt(client.secret,
3547
key)
3548
client_dict = {}
3549
3550
# A list of attributes that can not be pickled
3551
# + secret.
3552
exclude = {"bus", "changedstate", "secret",
3553
"checker", "server_settings"}
3554
for name, typ in inspect.getmembers(dbus.service
3555
.Object):
3556
exclude.add(name)
3557
3558
client_dict["encrypted_secret"] = (client
3559
.encrypted_secret)
3560
for attr in client.client_structure:
3561
if attr not in exclude:
3562
client_dict[attr] = getattr(client, attr)
3563
3564
clients[client.name] = client_dict
3565
del client_settings[client.name]["secret"]
3566
3567
try:
3568
with tempfile.NamedTemporaryFile(
3569
mode="wb",
3570
suffix=".pickle",
3571
prefix="clients-",
3572
dir=os.path.dirname(stored_state_path),
3573
delete=False) as stored_state:
3574
pickle.dump((clients, client_settings), stored_state,
3575
protocol=2)
3576
tempname = stored_state.name
3577
os.rename(tempname, stored_state_path)
3578
except (IOError, OSError) as e:
3579
if not debug:
3580
try:
3581
os.remove(tempname)
3582
except NameError:
3583
pass
3584
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3585
log.warning("Could not save persistent state: %s",
3586
os.strerror(e.errno))
3587
else:
3588
log.warning("Could not save persistent state:",
3589
exc_info=e)
3590
raise
3591
3592
# Delete all clients, and settings from config
2011
service.cleanup()
2012
3593
2013
while tcp_server.clients:
3594
name, client = tcp_server.clients.popitem()
2014
client = tcp_server.clients.pop()
3595
2015
if use_dbus:
3596
2016
client.remove_from_connection()
3597
# Don't signal the disabling
2017
client.disable_hook = None
2018
# Don't signal anything except ClientRemoved
3598
2019
client.disable(quiet=True)
3599
# Emit D-Bus signal for removal
3600
2020
if use_dbus:
3601
mandos_dbus_service.client_removed_signal(client)
3602
client_settings.clear()
3603
2021
# Emit D-Bus signal
2022
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2023
client.name)
2024
3604
2025
atexit.register(cleanup)
3605
3606
for client in tcp_server.clients.values():
2026
2027
for client in tcp_server.clients:
3607
2028
if use_dbus:
3608
# Emit D-Bus signal for adding
3609
mandos_dbus_service.client_added_signal(client)
3610
# Need to initiate checking of clients
3611
if client.enabled:
3612
client.init_checker()
3613
2029
# Emit D-Bus signal
2030
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2031
client.enable()
2032
3614
2033
tcp_server.enable()
3615
2034
tcp_server.server_activate()
3616
2035
3617
2036
# Find out what port we got
3618
if zeroconf:
3619
service.port = tcp_server.socket.getsockname()[1]
2037
service.port = tcp_server.socket.getsockname()[1]
3620
2038
if use_ipv6:
3621
log.info("Now listening on address %r, port %d, flowinfo %d,"
3622
" scope_id %d", *tcp_server.socket.getsockname())
2039
logger.info("Now listening on address %r, port %d,"
2040
" flowinfo %d, scope_id %d"
2041
% tcp_server.socket.getsockname())
3623
2042
else: # IPv4
3624
log.info("Now listening on address %r, port %d",
3625
*tcp_server.socket.getsockname())
3626
3627
# service.interface = tcp_server.socket.getsockname()[3]
3628
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
3629
2048
try:
3630
if zeroconf:
3631
# From the Avahi example code
3632
try:
3633
service.activate()
3634
except dbus.exceptions.DBusException as error:
3635
log.critical("D-Bus Exception", exc_info=error)
3636
cleanup()
3637
sys.exit(1)
3638
# End of Avahi example code
3639
3640
GLib.io_add_watch(
3641
GLib.IOChannel.unix_new(tcp_server.fileno()),
3642
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3643
lambda *args, **kwargs: (tcp_server.handle_request
3644
(*args[2:], **kwargs) or True))
3645
3646
log.debug("Starting main loop")
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
2063
logger.debug("Starting main loop")
3647
2064
main_loop.run()
3648
2065
except AvahiError as error:
3649
log.critical("Avahi Error", exc_info=error)
2066
logger.critical("AvahiError: %s", error)
3650
2067
cleanup()
3651
2068
sys.exit(1)
3652
2069
except KeyboardInterrupt:
3653
2070
if debug:
3654
2071
print("", file=sys.stderr)
3655
log.debug("Server received KeyboardInterrupt")
3656
log.debug("Server exiting")
2072
logger.debug("Server received KeyboardInterrupt")
2073
logger.debug("Server exiting")
3657
2074
# Must run before the D-Bus bus name gets deregistered
3658
2075
cleanup()
3659
2076
3660
3661
def parse_test_args():
3662
# type: () -> argparse.Namespace
3663
parser = argparse.ArgumentParser(add_help=False)
3664
parser.add_argument("--check", action="store_true")
3665
parser.add_argument("--prefix", )
3666
args, unknown_args = parser.parse_known_args()
3667
if args.check:
3668
# Remove test options from sys.argv
3669
sys.argv[1:] = unknown_args
3670
return args
3671
3672
# Add all tests from doctest strings
3673
def load_tests(loader, tests, none):
3674
import doctest
3675
tests.addTests(doctest.DocTestSuite())
3676
return tests
3677
3678
if __name__ == "__main__":
3679
options = parse_test_args()
3680
try:
3681
if options.check:
3682
extra_test_prefix = options.prefix
3683
if extra_test_prefix is not None:
3684
if not (unittest.main(argv=[""], exit=False)
3685
.result.wasSuccessful()):
3686
sys.exit(1)
3687
class ExtraTestLoader(unittest.TestLoader):
3688
testMethodPrefix = extra_test_prefix
3689
# Call using ./scriptname --test [--verbose]
3690
unittest.main(argv=[""], testLoader=ExtraTestLoader())
3691
else:
3692
unittest.main(argv=[""])
3693
else:
3694
main()
3695
finally:
3696
logging.shutdown()
3697
3698
# Local Variables:
3699
# run-tests:
3700
# (lambda (&optional extra)
3701
# (if (not (funcall run-tests-in-test-buffer default-directory
3702
# extra))
3703
# (funcall show-test-buffer-in-test-window)
3704
# (funcall remove-test-window)
3705
# (if extra (message "Extra tests run successfully!"))))
3706
# run-tests-in-test-buffer:
3707
# (lambda (dir &optional extra)
3708
# (with-current-buffer (get-buffer-create "*Test*")
3709
# (setq buffer-read-only nil
3710
# default-directory dir)
3711
# (erase-buffer)
3712
# (compilation-mode))
3713
# (let ((process-result
3714
# (let ((inhibit-read-only t))
3715
# (process-file-shell-command
3716
# (funcall get-command-line extra) nil "*Test*"))))
3717
# (and (numberp process-result)
3718
# (= process-result 0))))
3719
# get-command-line:
3720
# (lambda (&optional extra)
3721
# (let ((quoted-script
3722
# (shell-quote-argument (funcall get-script-name))))
3723
# (format
3724
# (concat "%s --check" (if extra " --prefix=atest" ""))
3725
# quoted-script)))
3726
# get-script-name:
3727
# (lambda ()
3728
# (if (fboundp 'file-local-name)
3729
# (file-local-name (buffer-file-name))
3730
# (or (file-remote-p (buffer-file-name) 'localname)
3731
# (buffer-file-name))))
3732
# remove-test-window:
3733
# (lambda ()
3734
# (let ((test-window (get-buffer-window "*Test*")))
3735
# (if test-window (delete-window test-window))))
3736
# show-test-buffer-in-test-window:
3737
# (lambda ()
3738
# (when (not (get-buffer-window-list "*Test*"))
3739
# (setq next-error-last-buffer (get-buffer "*Test*"))
3740
# (let* ((side (if (>= (window-width) 146) 'right 'bottom))
3741
# (display-buffer-overriding-action
3742
# `((display-buffer-in-side-window) (side . ,side)
3743
# (window-height . fit-window-to-buffer)
3744
# (window-width . fit-window-to-buffer))))
3745
# (display-buffer "*Test*"))))
3746
# eval:
3747
# (progn
3748
# (let* ((run-extra-tests (lambda () (interactive)
3749
# (funcall run-tests t)))
3750
# (inner-keymap `(keymap (116 . ,run-extra-tests))) ; t
3751
# (outer-keymap `(keymap (3 . ,inner-keymap)))) ; C-c
3752
# (setq minor-mode-overriding-map-alist
3753
# (cons `(run-tests . ,outer-keymap)
3754
# minor-mode-overriding-map-alist)))
3755
# (add-hook 'after-save-hook run-tests 90 t))
3756
# End:
2077
if __name__ == '__main__':
2078
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0