To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/trunk
« back to all changes in this revision
Viewing changes to mandos
- browse files at revision 1245
- compare with another revision
- download diff
- download tarball
- view history from revision 1245
- Committer: Teddy Hogeborn
- Date: 2022-04-23 20:39:28 UTC
- Revision ID: teddy@recompile.se-20220423203928-q2ngppp3pt7cfv4x
Makefile: Add comment about phase out of -lpthread
* Makefile (dracut-module/password-agent): Add comment about -lpthread
being unnecessary in GNU C library 2.34 and later.
* Makefile (dracut-module/password-agent): Add comment about -lpthread
being unnecessary in GNU C library 2.34 and later.
- files added:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- plugin-helpers
- files removed:
- initramfs-tools-hook-conf
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python
2
# -*- mode: python; coding: utf-8 -*-
3
#
1
#!/usr/bin/python3 -bI
2
# -*- mode: python; after-save-hook: (lambda () (let ((command (if (fboundp 'file-local-name) (file-local-name (buffer-file-name)) (or (file-remote-p (buffer-file-name) 'localname) (buffer-file-name))))) (if (= (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (format "%s --check" (shell-quote-argument command)) nil "*Test*")) 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w))) (progn (with-current-buffer "*Test*" (compilation-mode)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); coding: utf-8 -*-
3
#
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 © 2008-2012 Teddy Hogeborn
15
# Copyright © 2008-2012 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
14
# Copyright © 2008-2020 Teddy Hogeborn
15
# Copyright © 2008-2020 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
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
31
32
# Contact the authors at <mandos@recompile.se>.
32
#
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
from future_builtins import *
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
38
42
39
import SocketServer as socketserver
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
40
47
import socket
41
48
import argparse
42
49
import datetime
43
50
import errno
44
import gnutls.crypto
45
import gnutls.connection
46
import gnutls.errors
47
import gnutls.library.functions
48
import gnutls.library.constants
49
import gnutls.library.types
50
import ConfigParser as configparser
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
51
55
import sys
52
56
import re
53
57
import os
62
66
import struct
63
67
import fcntl
64
68
import functools
65
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
66
73
import multiprocessing
67
74
import types
68
75
import binascii
69
76
import tempfile
70
77
import itertools
78
import collections
79
import codecs
80
import unittest
81
import random
82
import shlex
71
83
72
84
import dbus
73
85
import dbus.service
74
import gobject
75
import avahi
86
import gi
87
from gi.repository import GLib
76
88
from dbus.mainloop.glib import DBusGMainLoop
77
89
import ctypes
78
90
import ctypes.util
79
91
import xml.dom.minidom
80
92
import inspect
81
import GnuPGInterface
82
83
try:
93
94
if sys.version_info.major == 2:
95
__metaclass__ = type
96
str = unicode
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:
84
122
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
85
123
except AttributeError:
86
124
try:
125
# This is where SO_BINDTODEVICE was up to and including Python
126
# 2.6, and also 3.2:
87
127
from IN import SO_BINDTODEVICE
88
128
except ImportError:
89
SO_BINDTODEVICE = None
90
91
version = "1.5.4"
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 = "1.8.14"
92
147
stored_state_file = "clients.pickle"
93
148
94
149
logger = logging.getLogger()
95
syslogger = (logging.handlers.SysLogHandler
96
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
97
address = str("/dev/log")))
150
logging.captureWarnings(True) # Show warnings via the logging system
151
syslogger = None
98
152
99
153
try:
100
if_nametoindex = (ctypes.cdll.LoadLibrary
101
(ctypes.util.find_library("c"))
102
.if_nametoindex)
154
if_nametoindex = ctypes.cdll.LoadLibrary(
155
ctypes.util.find_library("c")).if_nametoindex
103
156
except (OSError, AttributeError):
157
104
158
def if_nametoindex(interface):
105
159
"Get an interface index the hard way, i.e. using fcntl()"
106
160
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
107
161
with contextlib.closing(socket.socket()) as s:
108
162
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
109
struct.pack(str("16s16x"),
110
interface))
111
interface_index = struct.unpack(str("I"),
112
ifreq[16:20])[0]
163
struct.pack(b"16s16x", interface))
164
interface_index = struct.unpack("I", ifreq[16:20])[0]
113
165
return interface_index
114
166
115
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
116
184
def initlogger(debug, level=logging.WARNING):
117
185
"""init logger and add loglevel"""
118
186
187
global syslogger
188
syslogger = (logging.handlers.SysLogHandler(
189
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
190
address="/dev/log"))
119
191
syslogger.setFormatter(logging.Formatter
120
192
('Mandos [%(process)d]: %(levelname)s:'
121
193
' %(message)s'))
122
194
logger.addHandler(syslogger)
123
195
124
196
if debug:
125
197
console = logging.StreamHandler()
126
198
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
136
208
pass
137
209
138
210
139
class PGPEngine(object):
211
class PGPEngine:
140
212
"""A simple class for OpenPGP symmetric encryption & decryption"""
213
141
214
def __init__(self):
142
self.gnupg = GnuPGInterface.GnuPG()
143
215
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
144
self.gnupg = GnuPGInterface.GnuPG()
145
self.gnupg.options.meta_interactive = False
146
self.gnupg.options.homedir = self.tempdir
147
self.gnupg.options.extra_args.extend(['--force-mdc',
148
'--quiet',
149
'--no-use-agent'])
150
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
151
235
def __enter__(self):
152
236
return self
153
237
154
238
def __exit__(self, exc_type, exc_value, traceback):
155
239
self._cleanup()
156
240
return False
157
241
158
242
def __del__(self):
159
243
self._cleanup()
160
244
161
245
def _cleanup(self):
162
246
if self.tempdir is not None:
163
247
# Delete contents of tempdir
164
248
for root, dirs, files in os.walk(self.tempdir,
165
topdown = False):
249
topdown=False):
166
250
for filename in files:
167
251
os.remove(os.path.join(root, filename))
168
252
for dirname in dirs:
170
254
# Remove tempdir
171
255
os.rmdir(self.tempdir)
172
256
self.tempdir = None
173
257
174
258
def password_encode(self, password):
175
259
# Passphrase can not be empty and can not contain newlines or
176
260
# NUL bytes. So we prefix it and hex encode it.
177
return b"mandos" + binascii.hexlify(password)
178
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
179
269
def encrypt(self, data, password):
180
self.gnupg.passphrase = self.password_encode(password)
181
with open(os.devnull, "w") as devnull:
182
try:
183
proc = self.gnupg.run(['--symmetric'],
184
create_fhs=['stdin', 'stdout'],
185
attach_fhs={'stderr': devnull})
186
with contextlib.closing(proc.handles['stdin']) as f:
187
f.write(data)
188
with contextlib.closing(proc.handles['stdout']) as f:
189
ciphertext = f.read()
190
proc.wait()
191
except IOError as e:
192
raise PGPError(e)
193
self.gnupg.passphrase = None
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)
194
285
return ciphertext
195
286
196
287
def decrypt(self, data, password):
197
self.gnupg.passphrase = self.password_encode(password)
198
with open(os.devnull, "w") as devnull:
199
try:
200
proc = self.gnupg.run(['--decrypt'],
201
create_fhs=['stdin', 'stdout'],
202
attach_fhs={'stderr': devnull})
203
with contextlib.closing(proc.handles['stdin']) as f:
204
f.write(data)
205
with contextlib.closing(proc.handles['stdout']) as f:
206
decrypted_plaintext = f.read()
207
proc.wait()
208
except IOError as e:
209
raise PGPError(e)
210
self.gnupg.passphrase = None
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)
211
303
return decrypted_plaintext
212
304
213
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
331
214
332
class AvahiError(Exception):
215
333
def __init__(self, value, *args, **kwargs):
216
334
self.value = value
217
super(AvahiError, self).__init__(value, *args, **kwargs)
218
def __unicode__(self):
219
return unicode(repr(self.value))
335
return super(AvahiError, self).__init__(value, *args,
336
**kwargs)
337
220
338
221
339
class AvahiServiceError(AvahiError):
222
340
pass
223
341
342
224
343
class AvahiGroupError(AvahiError):
225
344
pass
226
345
227
346
228
class AvahiService(object):
347
class AvahiService:
229
348
"""An Avahi (Zeroconf) service.
230
349
231
350
Attributes:
232
351
interface: integer; avahi.IF_UNSPEC or an interface index.
233
352
Used to optionally bind to the specified interface.
234
353
name: string; Example: 'Mandos'
235
354
type: string; Example: '_mandos._tcp'.
236
See <http://www.dns-sd.org/ServiceTypes.html>
355
See <https://www.iana.org/assignments/service-names-port-numbers>
237
356
port: integer; what port to announce
238
357
TXT: list of strings; TXT record for the service
239
358
domain: string; Domain to publish on, default to .local if empty.
245
364
server: D-Bus Server
246
365
bus: dbus.SystemBus()
247
366
"""
248
249
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
250
servicetype = None, port = None, TXT = None,
251
domain = "", host = "", max_renames = 32768,
252
protocol = avahi.PROTO_UNSPEC, bus = None):
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):
253
379
self.interface = interface
254
380
self.name = name
255
381
self.type = servicetype
264
390
self.server = None
265
391
self.bus = bus
266
392
self.entry_group_state_changed_match = None
267
268
def rename(self):
393
394
def rename(self, remove=True):
269
395
"""Derived from the Avahi example code"""
270
396
if self.rename_count >= self.max_renames:
271
397
logger.critical("No suitable Zeroconf service name found"
272
398
" after %i retries, exiting.",
273
399
self.rename_count)
274
400
raise AvahiServiceError("Too many renames")
275
self.name = unicode(self.server
276
.GetAlternativeServiceName(self.name))
401
self.name = str(
402
self.server.GetAlternativeServiceName(self.name))
403
self.rename_count += 1
277
404
logger.info("Changing Zeroconf service name to %r ...",
278
405
self.name)
279
self.remove()
406
if remove:
407
self.remove()
280
408
try:
281
409
self.add()
282
410
except dbus.exceptions.DBusException as error:
283
logger.critical("D-Bus Exception", exc_info=error)
284
self.cleanup()
285
os._exit(1)
286
self.rename_count += 1
287
411
if (error.get_dbus_name()
412
== "org.freedesktop.Avahi.CollisionError"):
413
logger.info("Local Zeroconf service name collision.")
414
return self.rename(remove=False)
415
else:
416
logger.critical("D-Bus Exception", exc_info=error)
417
self.cleanup()
418
os._exit(1)
419
288
420
def remove(self):
289
421
"""Derived from the Avahi example code"""
290
422
if self.entry_group_state_changed_match is not None:
292
424
self.entry_group_state_changed_match = None
293
425
if self.group is not None:
294
426
self.group.Reset()
295
427
296
428
def add(self):
297
429
"""Derived from the Avahi example code"""
298
430
self.remove()
315
447
dbus.UInt16(self.port),
316
448
avahi.string_array_to_txt_array(self.TXT))
317
449
self.group.Commit()
318
450
319
451
def entry_group_state_changed(self, state, error):
320
452
"""Derived from the Avahi example code"""
321
453
logger.debug("Avahi entry group state change: %i", state)
322
454
323
455
if state == avahi.ENTRY_GROUP_ESTABLISHED:
324
456
logger.debug("Zeroconf service established.")
325
457
elif state == avahi.ENTRY_GROUP_COLLISION:
327
459
self.rename()
328
460
elif state == avahi.ENTRY_GROUP_FAILURE:
329
461
logger.critical("Avahi: Error in group state changed %s",
330
unicode(error))
331
raise AvahiGroupError("State changed: {0!s}"
332
.format(error))
333
462
str(error))
463
raise AvahiGroupError("State changed: {!s}".format(error))
464
334
465
def cleanup(self):
335
466
"""Derived from the Avahi example code"""
336
467
if self.group is not None:
341
472
pass
342
473
self.group = None
343
474
self.remove()
344
475
345
476
def server_state_changed(self, state, error=None):
346
477
"""Derived from the Avahi example code"""
347
478
logger.debug("Avahi server state change: %i", state)
348
bad_states = { avahi.SERVER_INVALID:
349
"Zeroconf server invalid",
350
avahi.SERVER_REGISTERING: None,
351
avahi.SERVER_COLLISION:
352
"Zeroconf server name collision",
353
avahi.SERVER_FAILURE:
354
"Zeroconf server failure" }
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
}
355
485
if state in bad_states:
356
486
if bad_states[state] is not None:
357
487
if error is None:
360
490
logger.error(bad_states[state] + ": %r", error)
361
491
self.cleanup()
362
492
elif state == avahi.SERVER_RUNNING:
363
self.add()
493
try:
494
self.add()
495
except dbus.exceptions.DBusException as error:
496
if (error.get_dbus_name()
497
== "org.freedesktop.Avahi.CollisionError"):
498
logger.info("Local Zeroconf service name"
499
" collision.")
500
return self.rename(remove=False)
501
else:
502
logger.critical("D-Bus Exception", exc_info=error)
503
self.cleanup()
504
os._exit(1)
364
505
else:
365
506
if error is None:
366
507
logger.debug("Unknown state: %r", state)
367
508
else:
368
509
logger.debug("Unknown state: %r: %r", state, error)
369
510
370
511
def activate(self):
371
512
"""Derived from the Avahi example code"""
372
513
if self.server is None:
376
517
follow_name_owner_changes=True),
377
518
avahi.DBUS_INTERFACE_SERVER)
378
519
self.server.connect_to_signal("StateChanged",
379
self.server_state_changed)
520
self.server_state_changed)
380
521
self.server_state_changed(self.server.GetState())
381
522
382
523
383
524
class AvahiServiceToSyslog(AvahiService):
384
def rename(self):
525
def rename(self, *args, **kwargs):
385
526
"""Add the new name to the syslog messages"""
386
ret = AvahiService.rename(self)
387
syslogger.setFormatter(logging.Formatter
388
('Mandos ({0}) [%(process)d]:'
389
' %(levelname)s: %(message)s'
390
.format(self.name)))
527
ret = super(AvahiServiceToSyslog, self).rename(*args,
528
**kwargs)
529
syslogger.setFormatter(logging.Formatter(
530
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
531
.format(self.name)))
391
532
return ret
392
533
393
534
394
def timedelta_to_milliseconds(td):
395
"Convert a datetime.timedelta() to milliseconds"
396
return ((td.days * 24 * 60 * 60 * 1000)
397
+ (td.seconds * 1000)
398
+ (td.microseconds // 1000))
399
400
401
class Client(object):
535
# Pretend that we have a GnuTLS module
536
class gnutls:
537
"""This isn't so much a class as it is a module-like namespace."""
538
539
library = ctypes.util.find_library("gnutls")
540
if library is None:
541
library = ctypes.util.find_library("gnutls-deb0")
542
_library = ctypes.cdll.LoadLibrary(library)
543
del library
544
545
# Unless otherwise indicated, the constants and types below are
546
# all from the gnutls/gnutls.h C header file.
547
548
# Constants
549
E_SUCCESS = 0
550
E_INTERRUPTED = -52
551
E_AGAIN = -28
552
CRT_OPENPGP = 2
553
CRT_RAWPK = 3
554
CLIENT = 2
555
SHUT_RDWR = 0
556
CRD_CERTIFICATE = 1
557
E_NO_CERTIFICATE_FOUND = -49
558
X509_FMT_DER = 0
559
NO_TICKETS = 1<<10
560
ENABLE_RAWPK = 1<<18
561
CTYPE_PEERS = 3
562
KEYID_USE_SHA256 = 1 # gnutls/x509.h
563
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
564
565
# Types
566
class _session_int(ctypes.Structure):
567
_fields_ = []
568
session_t = ctypes.POINTER(_session_int)
569
570
class certificate_credentials_st(ctypes.Structure):
571
_fields_ = []
572
certificate_credentials_t = ctypes.POINTER(
573
certificate_credentials_st)
574
certificate_type_t = ctypes.c_int
575
576
class datum_t(ctypes.Structure):
577
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
578
('size', ctypes.c_uint)]
579
580
class _openpgp_crt_int(ctypes.Structure):
581
_fields_ = []
582
openpgp_crt_t = ctypes.POINTER(_openpgp_crt_int)
583
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
584
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
585
credentials_type_t = ctypes.c_int
586
transport_ptr_t = ctypes.c_void_p
587
close_request_t = ctypes.c_int
588
589
# Exceptions
590
class Error(Exception):
591
def __init__(self, message=None, code=None, args=()):
592
# Default usage is by a message string, but if a return
593
# code is passed, convert it to a string with
594
# gnutls.strerror()
595
self.code = code
596
if message is None and code is not None:
597
message = gnutls.strerror(code).decode(
598
"utf-8", errors="replace")
599
return super(gnutls.Error, self).__init__(
600
message, *args)
601
602
class CertificateSecurityError(Error):
603
pass
604
605
class PointerTo:
606
def __init__(self, cls):
607
self.cls = cls
608
609
def from_param(self, obj):
610
if not isinstance(obj, self.cls):
611
raise TypeError("Not of type {}: {!r}"
612
.format(self.cls.__name__, obj))
613
return ctypes.byref(obj.from_param(obj))
614
615
class CastToVoidPointer:
616
def __init__(self, cls):
617
self.cls = cls
618
619
def from_param(self, obj):
620
if not isinstance(obj, self.cls):
621
raise TypeError("Not of type {}: {!r}"
622
.format(self.cls.__name__, obj))
623
return ctypes.cast(obj.from_param(obj), ctypes.c_void_p)
624
625
class With_from_param:
626
@classmethod
627
def from_param(cls, obj):
628
return obj._as_parameter_
629
630
# Classes
631
class Credentials(With_from_param):
632
def __init__(self):
633
self._as_parameter_ = gnutls.certificate_credentials_t()
634
gnutls.certificate_allocate_credentials(self)
635
self.type = gnutls.CRD_CERTIFICATE
636
637
def __del__(self):
638
gnutls.certificate_free_credentials(self)
639
640
class ClientSession(With_from_param):
641
def __init__(self, socket, credentials=None):
642
self._as_parameter_ = gnutls.session_t()
643
gnutls_flags = gnutls.CLIENT
644
if gnutls.check_version(b"3.5.6"):
645
gnutls_flags |= gnutls.NO_TICKETS
646
if gnutls.has_rawpk:
647
gnutls_flags |= gnutls.ENABLE_RAWPK
648
gnutls.init(self, gnutls_flags)
649
del gnutls_flags
650
gnutls.set_default_priority(self)
651
gnutls.transport_set_ptr(self, socket.fileno())
652
gnutls.handshake_set_private_extensions(self, True)
653
self.socket = socket
654
if credentials is None:
655
credentials = gnutls.Credentials()
656
gnutls.credentials_set(self, credentials.type,
657
credentials)
658
self.credentials = credentials
659
660
def __del__(self):
661
gnutls.deinit(self)
662
663
def handshake(self):
664
return gnutls.handshake(self)
665
666
def send(self, data):
667
data = bytes(data)
668
data_len = len(data)
669
while data_len > 0:
670
data_len -= gnutls.record_send(self, data[-data_len:],
671
data_len)
672
673
def bye(self):
674
return gnutls.bye(self, gnutls.SHUT_RDWR)
675
676
# Error handling functions
677
def _error_code(result):
678
"""A function to raise exceptions on errors, suitable
679
for the 'restype' attribute on ctypes functions"""
680
if result >= gnutls.E_SUCCESS:
681
return result
682
if result == gnutls.E_NO_CERTIFICATE_FOUND:
683
raise gnutls.CertificateSecurityError(code=result)
684
raise gnutls.Error(code=result)
685
686
def _retry_on_error(result, func, arguments,
687
_error_code=_error_code):
688
"""A function to retry on some errors, suitable
689
for the 'errcheck' attribute on ctypes functions"""
690
while result < gnutls.E_SUCCESS:
691
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
692
return _error_code(result)
693
result = func(*arguments)
694
return result
695
696
# Unless otherwise indicated, the function declarations below are
697
# all from the gnutls/gnutls.h C header file.
698
699
# Functions
700
priority_set_direct = _library.gnutls_priority_set_direct
701
priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,
702
ctypes.POINTER(ctypes.c_char_p)]
703
priority_set_direct.restype = _error_code
704
705
init = _library.gnutls_init
706
init.argtypes = [PointerTo(ClientSession), ctypes.c_int]
707
init.restype = _error_code
708
709
set_default_priority = _library.gnutls_set_default_priority
710
set_default_priority.argtypes = [ClientSession]
711
set_default_priority.restype = _error_code
712
713
record_send = _library.gnutls_record_send
714
record_send.argtypes = [ClientSession, ctypes.c_void_p,
715
ctypes.c_size_t]
716
record_send.restype = ctypes.c_ssize_t
717
record_send.errcheck = _retry_on_error
718
719
certificate_allocate_credentials = (
720
_library.gnutls_certificate_allocate_credentials)
721
certificate_allocate_credentials.argtypes = [
722
PointerTo(Credentials)]
723
certificate_allocate_credentials.restype = _error_code
724
725
certificate_free_credentials = (
726
_library.gnutls_certificate_free_credentials)
727
certificate_free_credentials.argtypes = [Credentials]
728
certificate_free_credentials.restype = None
729
730
handshake_set_private_extensions = (
731
_library.gnutls_handshake_set_private_extensions)
732
handshake_set_private_extensions.argtypes = [ClientSession,
733
ctypes.c_int]
734
handshake_set_private_extensions.restype = None
735
736
credentials_set = _library.gnutls_credentials_set
737
credentials_set.argtypes = [ClientSession, credentials_type_t,
738
CastToVoidPointer(Credentials)]
739
credentials_set.restype = _error_code
740
741
strerror = _library.gnutls_strerror
742
strerror.argtypes = [ctypes.c_int]
743
strerror.restype = ctypes.c_char_p
744
745
certificate_type_get = _library.gnutls_certificate_type_get
746
certificate_type_get.argtypes = [ClientSession]
747
certificate_type_get.restype = _error_code
748
749
certificate_get_peers = _library.gnutls_certificate_get_peers
750
certificate_get_peers.argtypes = [ClientSession,
751
ctypes.POINTER(ctypes.c_uint)]
752
certificate_get_peers.restype = ctypes.POINTER(datum_t)
753
754
global_set_log_level = _library.gnutls_global_set_log_level
755
global_set_log_level.argtypes = [ctypes.c_int]
756
global_set_log_level.restype = None
757
758
global_set_log_function = _library.gnutls_global_set_log_function
759
global_set_log_function.argtypes = [log_func]
760
global_set_log_function.restype = None
761
762
deinit = _library.gnutls_deinit
763
deinit.argtypes = [ClientSession]
764
deinit.restype = None
765
766
handshake = _library.gnutls_handshake
767
handshake.argtypes = [ClientSession]
768
handshake.restype = ctypes.c_int
769
handshake.errcheck = _retry_on_error
770
771
transport_set_ptr = _library.gnutls_transport_set_ptr
772
transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]
773
transport_set_ptr.restype = None
774
775
bye = _library.gnutls_bye
776
bye.argtypes = [ClientSession, close_request_t]
777
bye.restype = ctypes.c_int
778
bye.errcheck = _retry_on_error
779
780
check_version = _library.gnutls_check_version
781
check_version.argtypes = [ctypes.c_char_p]
782
check_version.restype = ctypes.c_char_p
783
784
_need_version = b"3.3.0"
785
if check_version(_need_version) is None:
786
raise self.Error("Needs GnuTLS {} or later"
787
.format(_need_version))
788
789
_tls_rawpk_version = b"3.6.6"
790
has_rawpk = bool(check_version(_tls_rawpk_version))
791
792
if has_rawpk:
793
# Types
794
class pubkey_st(ctypes.Structure):
795
_fields = []
796
pubkey_t = ctypes.POINTER(pubkey_st)
797
798
x509_crt_fmt_t = ctypes.c_int
799
800
# All the function declarations below are from
801
# gnutls/abstract.h
802
pubkey_init = _library.gnutls_pubkey_init
803
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
804
pubkey_init.restype = _error_code
805
806
pubkey_import = _library.gnutls_pubkey_import
807
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
808
x509_crt_fmt_t]
809
pubkey_import.restype = _error_code
810
811
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
812
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
813
ctypes.POINTER(ctypes.c_ubyte),
814
ctypes.POINTER(ctypes.c_size_t)]
815
pubkey_get_key_id.restype = _error_code
816
817
pubkey_deinit = _library.gnutls_pubkey_deinit
818
pubkey_deinit.argtypes = [pubkey_t]
819
pubkey_deinit.restype = None
820
else:
821
# All the function declarations below are from
822
# gnutls/openpgp.h
823
824
openpgp_crt_init = _library.gnutls_openpgp_crt_init
825
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
826
openpgp_crt_init.restype = _error_code
827
828
openpgp_crt_import = _library.gnutls_openpgp_crt_import
829
openpgp_crt_import.argtypes = [openpgp_crt_t,
830
ctypes.POINTER(datum_t),
831
openpgp_crt_fmt_t]
832
openpgp_crt_import.restype = _error_code
833
834
openpgp_crt_verify_self = \
835
_library.gnutls_openpgp_crt_verify_self
836
openpgp_crt_verify_self.argtypes = [
837
openpgp_crt_t,
838
ctypes.c_uint,
839
ctypes.POINTER(ctypes.c_uint),
840
]
841
openpgp_crt_verify_self.restype = _error_code
842
843
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
844
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
845
openpgp_crt_deinit.restype = None
846
847
openpgp_crt_get_fingerprint = (
848
_library.gnutls_openpgp_crt_get_fingerprint)
849
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
850
ctypes.c_void_p,
851
ctypes.POINTER(
852
ctypes.c_size_t)]
853
openpgp_crt_get_fingerprint.restype = _error_code
854
855
if check_version(b"3.6.4"):
856
certificate_type_get2 = _library.gnutls_certificate_type_get2
857
certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]
858
certificate_type_get2.restype = _error_code
859
860
# Remove non-public functions
861
del _error_code, _retry_on_error
862
863
864
def call_pipe(connection, # : multiprocessing.Connection
865
func, *args, **kwargs):
866
"""This function is meant to be called by multiprocessing.Process
867
868
This function runs func(*args, **kwargs), and writes the resulting
869
return value on the provided multiprocessing.Connection.
870
"""
871
connection.send(func(*args, **kwargs))
872
connection.close()
873
874
875
class Client:
402
876
"""A representation of a client host served by this server.
403
877
404
878
Attributes:
405
879
approved: bool(); 'None' if not yet approved/disapproved
406
880
approval_delay: datetime.timedelta(); Time to wait for approval
407
881
approval_duration: datetime.timedelta(); Duration of one approval
408
checker: subprocess.Popen(); a running checker process used
409
to see if the client lives.
410
'None' if no process is running.
411
checker_callback_tag: a gobject event source tag, or None
882
checker: multiprocessing.Process(); a running checker process used
883
to see if the client lives. 'None' if no process is
884
running.
885
checker_callback_tag: a GLib event source tag, or None
412
886
checker_command: string; External command which is run to check
413
887
if client lives. %() expansions are done at
414
888
runtime with vars(self) as dict, so that for
415
889
instance %(name)s can be used in the command.
416
checker_initiator_tag: a gobject event source tag, or None
890
checker_initiator_tag: a GLib event source tag, or None
417
891
created: datetime.datetime(); (UTC) object creation
418
892
client_structure: Object describing what attributes a client has
419
893
and is used for storing the client at exit
420
894
current_checker_command: string; current running checker_command
421
disable_initiator_tag: a gobject event source tag, or None
895
disable_initiator_tag: a GLib event source tag, or None
422
896
enabled: bool()
423
897
fingerprint: string (40 or 32 hexadecimal digits); used to
424
uniquely identify the client
898
uniquely identify an OpenPGP client
899
key_id: string (64 hexadecimal digits); used to uniquely identify
900
a client using raw public keys
425
901
host: string; available for use by the checker command
426
902
interval: datetime.timedelta(); How often to start a new checker
427
903
last_approval_request: datetime.datetime(); (UTC) or None
429
905
last_checker_status: integer between 0 and 255 reflecting exit
430
906
status of last checker. -1 reflects crashed
431
907
checker, -2 means no checker completed yet.
908
last_checker_signal: The signal which killed the last checker, if
909
last_checker_status is -1
432
910
last_enabled: datetime.datetime(); (UTC) or None
433
911
name: string; from the config file, used in log messages and
434
912
D-Bus identifiers
439
917
runtime_expansions: Allowed attributes for runtime expansion.
440
918
expires: datetime.datetime(); time (UTC) when a client will be
441
919
disabled, or None
920
server_settings: The server_settings dict from main()
442
921
"""
443
922
444
923
runtime_expansions = ("approval_delay", "approval_duration",
445
"created", "enabled", "expires",
924
"created", "enabled", "expires", "key_id",
446
925
"fingerprint", "host", "interval",
447
926
"last_approval_request", "last_checked_ok",
448
927
"last_enabled", "name", "timeout")
449
client_defaults = { "timeout": "5m",
450
"extended_timeout": "15m",
451
"interval": "2m",
452
"checker": "fping -q -- %%(host)s",
453
"host": "",
454
"approval_delay": "0s",
455
"approval_duration": "1s",
456
"approved_by_default": "True",
457
"enabled": "True",
458
}
459
460
def timeout_milliseconds(self):
461
"Return the 'timeout' attribute in milliseconds"
462
return timedelta_to_milliseconds(self.timeout)
463
464
def extended_timeout_milliseconds(self):
465
"Return the 'extended_timeout' attribute in milliseconds"
466
return timedelta_to_milliseconds(self.extended_timeout)
467
468
def interval_milliseconds(self):
469
"Return the 'interval' attribute in milliseconds"
470
return timedelta_to_milliseconds(self.interval)
471
472
def approval_delay_milliseconds(self):
473
return timedelta_to_milliseconds(self.approval_delay)
474
928
client_defaults = {
929
"timeout": "PT5M",
930
"extended_timeout": "PT15M",
931
"interval": "PT2M",
932
"checker": "fping -q -- %%(host)s",
933
"host": "",
934
"approval_delay": "PT0S",
935
"approval_duration": "PT1S",
936
"approved_by_default": "True",
937
"enabled": "True",
938
}
939
475
940
@staticmethod
476
941
def config_parser(config):
477
942
"""Construct a new dict of client settings of this form:
484
949
for client_name in config.sections():
485
950
section = dict(config.items(client_name))
486
951
client = settings[client_name] = {}
487
952
488
953
client["host"] = section["host"]
489
954
# Reformat values from string types to Python types
490
955
client["approved_by_default"] = config.getboolean(
491
956
client_name, "approved_by_default")
492
957
client["enabled"] = config.getboolean(client_name,
493
958
"enabled")
494
959
960
# Uppercase and remove spaces from key_id and fingerprint
961
# for later comparison purposes with return value from the
962
# key_id() and fingerprint() functions
963
client["key_id"] = (section.get("key_id", "").upper()
964
.replace(" ", ""))
495
965
client["fingerprint"] = (section["fingerprint"].upper()
496
966
.replace(" ", ""))
497
967
if "secret" in section:
498
client["secret"] = section["secret"].decode("base64")
968
client["secret"] = codecs.decode(section["secret"]
969
.encode("utf-8"),
970
"base64")
499
971
elif "secfile" in section:
500
972
with open(os.path.expanduser(os.path.expandvars
501
973
(section["secfile"])),
502
974
"rb") as secfile:
503
975
client["secret"] = secfile.read()
504
976
else:
505
raise TypeError("No secret or secfile for section {0}"
977
raise TypeError("No secret or secfile for section {}"
506
978
.format(section))
507
979
client["timeout"] = string_to_delta(section["timeout"])
508
980
client["extended_timeout"] = string_to_delta(
516
988
client["last_approval_request"] = None
517
989
client["last_checked_ok"] = None
518
990
client["last_checker_status"] = -2
519
991
520
992
return settings
521
522
def __init__(self, settings, name = None):
993
994
def __init__(self, settings, name=None, server_settings=None):
523
995
self.name = name
996
if server_settings is None:
997
server_settings = {}
998
self.server_settings = server_settings
524
999
# adding all client settings
525
for setting, value in settings.iteritems():
1000
for setting, value in settings.items():
526
1001
setattr(self, setting, value)
527
1002
528
1003
if self.enabled:
529
1004
if not hasattr(self, "last_enabled"):
530
1005
self.last_enabled = datetime.datetime.utcnow()
534
1009
else:
535
1010
self.last_enabled = None
536
1011
self.expires = None
537
1012
538
1013
logger.debug("Creating client %r", self.name)
539
# Uppercase and remove spaces from fingerprint for later
540
# comparison purposes with return value from the fingerprint()
541
# function
1014
logger.debug(" Key ID: %s", self.key_id)
542
1015
logger.debug(" Fingerprint: %s", self.fingerprint)
543
1016
self.created = settings.get("created",
544
1017
datetime.datetime.utcnow())
545
1018
546
1019
# attributes specific for this server instance
547
1020
self.checker = None
548
1021
self.checker_initiator_tag = None
551
1024
self.current_checker_command = None
552
1025
self.approved = None
553
1026
self.approvals_pending = 0
554
self.changedstate = (multiprocessing_manager
555
.Condition(multiprocessing_manager
556
.Lock()))
557
self.client_structure = [attr for attr in
558
self.__dict__.iterkeys()
1027
self.changedstate = multiprocessing_manager.Condition(
1028
multiprocessing_manager.Lock())
1029
self.client_structure = [attr
1030
for attr in self.__dict__.keys()
559
1031
if not attr.startswith("_")]
560
1032
self.client_structure.append("client_structure")
561
562
for name, t in inspect.getmembers(type(self),
563
lambda obj:
564
isinstance(obj,
565
property)):
1033
1034
for name, t in inspect.getmembers(
1035
type(self), lambda obj: isinstance(obj, property)):
566
1036
if not name.startswith("_"):
567
1037
self.client_structure.append(name)
568
1038
569
1039
# Send notice to process children that client state has changed
570
1040
def send_changedstate(self):
571
1041
with self.changedstate:
572
1042
self.changedstate.notify_all()
573
1043
574
1044
def enable(self):
575
1045
"""Start this client's checker and timeout hooks"""
576
1046
if getattr(self, "enabled", False):
581
1051
self.last_enabled = datetime.datetime.utcnow()
582
1052
self.init_checker()
583
1053
self.send_changedstate()
584
1054
585
1055
def disable(self, quiet=True):
586
1056
"""Disable this client."""
587
1057
if not getattr(self, "enabled", False):
589
1059
if not quiet:
590
1060
logger.info("Disabling client %s", self.name)
591
1061
if getattr(self, "disable_initiator_tag", None) is not None:
592
gobject.source_remove(self.disable_initiator_tag)
1062
GLib.source_remove(self.disable_initiator_tag)
593
1063
self.disable_initiator_tag = None
594
1064
self.expires = None
595
1065
if getattr(self, "checker_initiator_tag", None) is not None:
596
gobject.source_remove(self.checker_initiator_tag)
1066
GLib.source_remove(self.checker_initiator_tag)
597
1067
self.checker_initiator_tag = None
598
1068
self.stop_checker()
599
1069
self.enabled = False
600
1070
if not quiet:
601
1071
self.send_changedstate()
602
# Do not run this again if called by a gobject.timeout_add
1072
# Do not run this again if called by a GLib.timeout_add
603
1073
return False
604
1074
605
1075
def __del__(self):
606
1076
self.disable()
607
1077
608
1078
def init_checker(self):
609
1079
# Schedule a new checker to be started an 'interval' from now,
610
1080
# and every interval from then on.
611
1081
if self.checker_initiator_tag is not None:
612
gobject.source_remove(self.checker_initiator_tag)
613
self.checker_initiator_tag = (gobject.timeout_add
614
(self.interval_milliseconds(),
615
self.start_checker))
1082
GLib.source_remove(self.checker_initiator_tag)
1083
self.checker_initiator_tag = GLib.timeout_add(
1084
random.randrange(int(self.interval.total_seconds() * 1000
1085
+ 1)),
1086
self.start_checker)
616
1087
# Schedule a disable() when 'timeout' has passed
617
1088
if self.disable_initiator_tag is not None:
618
gobject.source_remove(self.disable_initiator_tag)
619
self.disable_initiator_tag = (gobject.timeout_add
620
(self.timeout_milliseconds(),
621
self.disable))
1089
GLib.source_remove(self.disable_initiator_tag)
1090
self.disable_initiator_tag = GLib.timeout_add(
1091
int(self.timeout.total_seconds() * 1000), self.disable)
622
1092
# Also start a new checker *right now*.
623
1093
self.start_checker()
624
625
def checker_callback(self, pid, condition, command):
1094
1095
def checker_callback(self, source, condition, connection,
1096
command):
626
1097
"""The checker has completed, so take appropriate actions."""
1098
# Read return code from connection (see call_pipe)
1099
returncode = connection.recv()
1100
connection.close()
1101
if self.checker is not None:
1102
self.checker.join()
627
1103
self.checker_callback_tag = None
628
1104
self.checker = None
629
if os.WIFEXITED(condition):
630
self.last_checker_status = os.WEXITSTATUS(condition)
1105
1106
if returncode >= 0:
1107
self.last_checker_status = returncode
1108
self.last_checker_signal = None
631
1109
if self.last_checker_status == 0:
632
1110
logger.info("Checker for %(name)s succeeded",
633
1111
vars(self))
634
1112
self.checked_ok()
635
1113
else:
636
logger.info("Checker for %(name)s failed",
637
vars(self))
1114
logger.info("Checker for %(name)s failed", vars(self))
638
1115
else:
639
1116
self.last_checker_status = -1
1117
self.last_checker_signal = -returncode
640
1118
logger.warning("Checker for %(name)s crashed?",
641
1119
vars(self))
642
1120
return False
1121
643
1122
def checked_ok(self):
644
1123
"""Assert that the client has been seen, alive and well."""
645
1124
self.last_checked_ok = datetime.datetime.utcnow()
646
1125
self.last_checker_status = 0
1126
self.last_checker_signal = None
647
1127
self.bump_timeout()
648
1128
649
1129
def bump_timeout(self, timeout=None):
650
1130
"""Bump up the timeout for this client."""
651
1131
if timeout is None:
652
1132
timeout = self.timeout
653
1133
if self.disable_initiator_tag is not None:
654
gobject.source_remove(self.disable_initiator_tag)
1134
GLib.source_remove(self.disable_initiator_tag)
655
1135
self.disable_initiator_tag = None
656
1136
if getattr(self, "enabled", False):
657
self.disable_initiator_tag = (gobject.timeout_add
658
(timedelta_to_milliseconds
659
(timeout), self.disable))
1137
self.disable_initiator_tag = GLib.timeout_add(
1138
int(timeout.total_seconds() * 1000), self.disable)
660
1139
self.expires = datetime.datetime.utcnow() + timeout
661
1140
662
1141
def need_approval(self):
663
1142
self.last_approval_request = datetime.datetime.utcnow()
664
1143
665
1144
def start_checker(self):
666
1145
"""Start a new checker subprocess if one is not running.
667
1146
668
1147
If a checker already exists, leave it running and do
669
1148
nothing."""
670
1149
# The reason for not killing a running checker is that if we
675
1154
# checkers alone, the checker would have to take more time
676
1155
# than 'timeout' for the client to be disabled, which is as it
677
1156
# should be.
678
679
# If a checker exists, make sure it is not a zombie
680
try:
681
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
682
except (AttributeError, OSError) as error:
683
if (isinstance(error, OSError)
684
and error.errno != errno.ECHILD):
685
raise error
686
else:
687
if pid:
688
logger.warning("Checker was a zombie")
689
gobject.source_remove(self.checker_callback_tag)
690
self.checker_callback(pid, status,
691
self.current_checker_command)
1157
1158
if self.checker is not None and not self.checker.is_alive():
1159
logger.warning("Checker was not alive; joining")
1160
self.checker.join()
1161
self.checker = None
692
1162
# Start a new checker if needed
693
1163
if self.checker is None:
694
1164
# Escape attributes for the shell
695
escaped_attrs = dict(
696
(attr, re.escape(unicode(getattr(self, attr))))
697
for attr in
698
self.runtime_expansions)
1165
escaped_attrs = {
1166
attr: shlex.quote(str(getattr(self, attr)))
1167
for attr in self.runtime_expansions}
699
1168
try:
700
1169
command = self.checker_command % escaped_attrs
701
1170
except TypeError as error:
702
1171
logger.error('Could not format string "%s"',
703
self.checker_command, exc_info=error)
704
return True # Try again later
1172
self.checker_command,
1173
exc_info=error)
1174
return True # Try again later
705
1175
self.current_checker_command = command
706
try:
707
logger.info("Starting checker %r for %s",
708
command, self.name)
709
# We don't need to redirect stdout and stderr, since
710
# in normal mode, that is already done by daemon(),
711
# and in debug mode we don't want to. (Stdin is
712
# always replaced by /dev/null.)
713
self.checker = subprocess.Popen(command,
714
close_fds=True,
715
shell=True, cwd="/")
716
except OSError as error:
717
logger.error("Failed to start subprocess",
718
exc_info=error)
719
self.checker_callback_tag = (gobject.child_watch_add
720
(self.checker.pid,
721
self.checker_callback,
722
data=command))
723
# The checker may have completed before the gobject
724
# watch was added. Check for this.
725
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
726
if pid:
727
gobject.source_remove(self.checker_callback_tag)
728
self.checker_callback(pid, status, command)
729
# Re-run this periodically if run by gobject.timeout_add
1176
logger.info("Starting checker %r for %s", command,
1177
self.name)
1178
# We don't need to redirect stdout and stderr, since
1179
# in normal mode, that is already done by daemon(),
1180
# and in debug mode we don't want to. (Stdin is
1181
# always replaced by /dev/null.)
1182
# The exception is when not debugging but nevertheless
1183
# running in the foreground; use the previously
1184
# created wnull.
1185
popen_args = {"close_fds": True,
1186
"shell": True,
1187
"cwd": "/"}
1188
if (not self.server_settings["debug"]
1189
and self.server_settings["foreground"]):
1190
popen_args.update({"stdout": wnull,
1191
"stderr": wnull})
1192
pipe = multiprocessing.Pipe(duplex=False)
1193
self.checker = multiprocessing.Process(
1194
target=call_pipe,
1195
args=(pipe[1], subprocess.call, command),
1196
kwargs=popen_args)
1197
self.checker.start()
1198
self.checker_callback_tag = GLib.io_add_watch(
1199
GLib.IOChannel.unix_new(pipe[0].fileno()),
1200
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1201
self.checker_callback, pipe[0], command)
1202
# Re-run this periodically if run by GLib.timeout_add
730
1203
return True
731
1204
732
1205
def stop_checker(self):
733
1206
"""Force the checker process, if any, to stop."""
734
1207
if self.checker_callback_tag:
735
gobject.source_remove(self.checker_callback_tag)
1208
GLib.source_remove(self.checker_callback_tag)
736
1209
self.checker_callback_tag = None
737
1210
if getattr(self, "checker", None) is None:
738
1211
return
739
1212
logger.debug("Stopping checker for %(name)s", vars(self))
740
try:
741
self.checker.terminate()
742
#time.sleep(0.5)
743
#if self.checker.poll() is None:
744
# self.checker.kill()
745
except OSError as error:
746
if error.errno != errno.ESRCH: # No such process
747
raise
1213
self.checker.terminate()
748
1214
self.checker = None
749
1215
750
1216
751
def dbus_service_property(dbus_interface, signature="v",
752
access="readwrite", byte_arrays=False):
1217
def dbus_service_property(dbus_interface,
1218
signature="v",
1219
access="readwrite",
1220
byte_arrays=False):
753
1221
"""Decorators for marking methods of a DBusObjectWithProperties to
754
1222
become properties on the D-Bus.
755
1223
756
1224
The decorated method will be called with no arguments by "Get"
757
1225
and with one argument by "Set".
758
1226
759
1227
The parameters, where they are supported, are the same as
760
1228
dbus.service.method, except there is only "signature", since the
761
1229
type from Get() and the type sent to Set() is the same.
764
1232
# "Set" method, so we fail early here:
765
1233
if byte_arrays and signature != "ay":
766
1234
raise ValueError("Byte arrays not supported for non-'ay'"
767
" signature {0!r}".format(signature))
1235
" signature {!r}".format(signature))
1236
768
1237
def decorator(func):
769
1238
func._dbus_is_property = True
770
1239
func._dbus_interface = dbus_interface
773
1242
func._dbus_name = func.__name__
774
1243
if func._dbus_name.endswith("_dbus_property"):
775
1244
func._dbus_name = func._dbus_name[:-14]
776
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1245
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
777
1246
return func
1247
778
1248
return decorator
779
1249
780
1250
781
1251
def dbus_interface_annotations(dbus_interface):
782
1252
"""Decorator for marking functions returning interface annotations
783
1253
784
1254
Usage:
785
1255
786
1256
@dbus_interface_annotations("org.example.Interface")
787
1257
def _foo(self): # Function name does not matter
788
1258
return {"org.freedesktop.DBus.Deprecated": "true",
789
1259
"org.freedesktop.DBus.Property.EmitsChangedSignal":
790
1260
"false"}
791
1261
"""
1262
792
1263
def decorator(func):
793
1264
func._dbus_is_interface = True
794
1265
func._dbus_interface = dbus_interface
795
1266
func._dbus_name = dbus_interface
796
1267
return func
1268
797
1269
return decorator
798
1270
799
1271
800
1272
def dbus_annotations(annotations):
801
1273
"""Decorator to annotate D-Bus methods, signals or properties
802
1274
Usage:
803
1275
1276
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1277
"org.freedesktop.DBus.Property."
1278
"EmitsChangedSignal": "false"})
804
1279
@dbus_service_property("org.example.Interface", signature="b",
805
1280
access="r")
806
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
807
"org.freedesktop.DBus.Property."
808
"EmitsChangedSignal": "false"})
809
1281
def Property_dbus_property(self):
810
1282
return dbus.Boolean(False)
1283
1284
See also the DBusObjectWithAnnotations class.
811
1285
"""
1286
812
1287
def decorator(func):
813
1288
func._dbus_annotations = annotations
814
1289
return func
1290
815
1291
return decorator
816
1292
817
1293
818
1294
class DBusPropertyException(dbus.exceptions.DBusException):
819
1295
"""A base class for D-Bus property-related exceptions
820
1296
"""
821
def __unicode__(self):
822
return unicode(str(self))
1297
pass
823
1298
824
1299
825
1300
class DBusPropertyAccessException(DBusPropertyException):
834
1309
pass
835
1310
836
1311
837
class DBusObjectWithProperties(dbus.service.Object):
838
"""A D-Bus object with properties.
839
840
Classes inheriting from this can use the dbus_service_property
841
decorator to expose methods as D-Bus properties. It exposes the
842
standard Get(), Set(), and GetAll() methods on the D-Bus.
1312
class DBusObjectWithAnnotations(dbus.service.Object):
1313
"""A D-Bus object with annotations.
1314
1315
Classes inheriting from this can use the dbus_annotations
1316
decorator to add annotations to methods or signals.
843
1317
"""
844
1318
845
1319
@staticmethod
846
1320
def _is_dbus_thing(thing):
847
1321
"""Returns a function testing if an attribute is a D-Bus thing
848
1322
849
1323
If called like _is_dbus_thing("method") it returns a function
850
1324
suitable for use as predicate to inspect.getmembers().
851
1325
"""
852
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
1326
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
853
1327
False)
854
1328
855
1329
def _get_all_dbus_things(self, thing):
856
1330
"""Returns a generator of (name, attribute) pairs
857
1331
"""
858
return ((getattr(athing.__get__(self), "_dbus_name",
859
name),
1332
return ((getattr(athing.__get__(self), "_dbus_name", name),
860
1333
athing.__get__(self))
861
1334
for cls in self.__class__.__mro__
862
1335
for name, athing in
863
inspect.getmembers(cls,
864
self._is_dbus_thing(thing)))
865
1336
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1337
1338
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1339
out_signature="s",
1340
path_keyword='object_path',
1341
connection_keyword='connection')
1342
def Introspect(self, object_path, connection):
1343
"""Overloading of standard D-Bus method.
1344
1345
Inserts annotation tags on methods and signals.
1346
"""
1347
xmlstring = dbus.service.Object.Introspect(self, object_path,
1348
connection)
1349
try:
1350
document = xml.dom.minidom.parseString(xmlstring)
1351
1352
for if_tag in document.getElementsByTagName("interface"):
1353
# Add annotation tags
1354
for typ in ("method", "signal"):
1355
for tag in if_tag.getElementsByTagName(typ):
1356
annots = dict()
1357
for name, prop in (self.
1358
_get_all_dbus_things(typ)):
1359
if (name == tag.getAttribute("name")
1360
and prop._dbus_interface
1361
== if_tag.getAttribute("name")):
1362
annots.update(getattr(
1363
prop, "_dbus_annotations", {}))
1364
for name, value in annots.items():
1365
ann_tag = document.createElement(
1366
"annotation")
1367
ann_tag.setAttribute("name", name)
1368
ann_tag.setAttribute("value", value)
1369
tag.appendChild(ann_tag)
1370
# Add interface annotation tags
1371
for annotation, value in dict(
1372
itertools.chain.from_iterable(
1373
annotations().items()
1374
for name, annotations
1375
in self._get_all_dbus_things("interface")
1376
if name == if_tag.getAttribute("name")
1377
)).items():
1378
ann_tag = document.createElement("annotation")
1379
ann_tag.setAttribute("name", annotation)
1380
ann_tag.setAttribute("value", value)
1381
if_tag.appendChild(ann_tag)
1382
# Fix argument name for the Introspect method itself
1383
if (if_tag.getAttribute("name")
1384
== dbus.INTROSPECTABLE_IFACE):
1385
for cn in if_tag.getElementsByTagName("method"):
1386
if cn.getAttribute("name") == "Introspect":
1387
for arg in cn.getElementsByTagName("arg"):
1388
if (arg.getAttribute("direction")
1389
== "out"):
1390
arg.setAttribute("name",
1391
"xml_data")
1392
xmlstring = document.toxml("utf-8")
1393
document.unlink()
1394
except (AttributeError, xml.dom.DOMException,
1395
xml.parsers.expat.ExpatError) as error:
1396
logger.error("Failed to override Introspection method",
1397
exc_info=error)
1398
return xmlstring
1399
1400
1401
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1402
"""A D-Bus object with properties.
1403
1404
Classes inheriting from this can use the dbus_service_property
1405
decorator to expose methods as D-Bus properties. It exposes the
1406
standard Get(), Set(), and GetAll() methods on the D-Bus.
1407
"""
1408
866
1409
def _get_dbus_property(self, interface_name, property_name):
867
1410
"""Returns a bound method if one exists which is a D-Bus
868
1411
property with the specified name and interface.
869
1412
"""
870
for cls in self.__class__.__mro__:
871
for name, value in (inspect.getmembers
872
(cls,
873
self._is_dbus_thing("property"))):
1413
for cls in self.__class__.__mro__:
1414
for name, value in inspect.getmembers(
1415
cls, self._is_dbus_thing("property")):
874
1416
if (value._dbus_name == property_name
875
1417
and value._dbus_interface == interface_name):
876
1418
return value.__get__(self)
877
1419
878
1420
# No such property
879
raise DBusPropertyNotFound(self.dbus_object_path + ":"
880
+ interface_name + "."
881
+ property_name)
882
883
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1421
raise DBusPropertyNotFound("{}:{}.{}".format(
1422
self.dbus_object_path, interface_name, property_name))
1423
1424
@classmethod
1425
def _get_all_interface_names(cls):
1426
"""Get a sequence of all interfaces supported by an object"""
1427
return (name for name in set(getattr(getattr(x, attr),
1428
"_dbus_interface", None)
1429
for x in (inspect.getmro(cls))
1430
for attr in dir(x))
1431
if name is not None)
1432
1433
@dbus.service.method(dbus.PROPERTIES_IFACE,
1434
in_signature="ss",
884
1435
out_signature="v")
885
1436
def Get(self, interface_name, property_name):
886
1437
"""Standard D-Bus property Get() method, see D-Bus standard.
892
1443
if not hasattr(value, "variant_level"):
893
1444
return value
894
1445
return type(value)(value, variant_level=value.variant_level+1)
895
1446
896
1447
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
897
1448
def Set(self, interface_name, property_name, value):
898
1449
"""Standard D-Bus property Set() method, see D-Bus standard.
904
1455
# The byte_arrays option is not supported yet on
905
1456
# signatures other than "ay".
906
1457
if prop._dbus_signature != "ay":
907
raise ValueError
908
value = dbus.ByteArray(b''.join(chr(byte)
909
for byte in value))
1458
raise ValueError("Byte arrays not supported for non-"
1459
"'ay' signature {!r}"
1460
.format(prop._dbus_signature))
1461
value = dbus.ByteArray(bytes(value))
910
1462
prop(value)
911
912
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1463
1464
@dbus.service.method(dbus.PROPERTIES_IFACE,
1465
in_signature="s",
913
1466
out_signature="a{sv}")
914
1467
def GetAll(self, interface_name):
915
1468
"""Standard D-Bus property GetAll() method, see D-Bus
916
1469
standard.
917
1470
918
1471
Note: Will not include properties with access="write".
919
1472
"""
920
1473
properties = {}
930
1483
if not hasattr(value, "variant_level"):
931
1484
properties[name] = value
932
1485
continue
933
properties[name] = type(value)(value, variant_level=
934
value.variant_level+1)
1486
properties[name] = type(value)(
1487
value, variant_level=value.variant_level + 1)
935
1488
return dbus.Dictionary(properties, signature="sv")
936
1489
1490
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1491
def PropertiesChanged(self, interface_name, changed_properties,
1492
invalidated_properties):
1493
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1494
standard.
1495
"""
1496
pass
1497
937
1498
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
938
1499
out_signature="s",
939
1500
path_keyword='object_path',
940
1501
connection_keyword='connection')
941
1502
def Introspect(self, object_path, connection):
942
1503
"""Overloading of standard D-Bus method.
943
1504
944
1505
Inserts property tags and interface annotation tags.
945
1506
"""
946
xmlstring = dbus.service.Object.Introspect(self, object_path,
947
connection)
1507
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1508
object_path,
1509
connection)
948
1510
try:
949
1511
document = xml.dom.minidom.parseString(xmlstring)
1512
950
1513
def make_tag(document, name, prop):
951
1514
e = document.createElement("property")
952
1515
e.setAttribute("name", name)
953
1516
e.setAttribute("type", prop._dbus_signature)
954
1517
e.setAttribute("access", prop._dbus_access)
955
1518
return e
1519
956
1520
for if_tag in document.getElementsByTagName("interface"):
957
1521
# Add property tags
958
1522
for tag in (make_tag(document, name, prop)
961
1525
if prop._dbus_interface
962
1526
== if_tag.getAttribute("name")):
963
1527
if_tag.appendChild(tag)
964
# Add annotation tags
965
for typ in ("method", "signal", "property"):
966
for tag in if_tag.getElementsByTagName(typ):
967
annots = dict()
968
for name, prop in (self.
969
_get_all_dbus_things(typ)):
970
if (name == tag.getAttribute("name")
971
and prop._dbus_interface
972
== if_tag.getAttribute("name")):
973
annots.update(getattr
974
(prop,
975
"_dbus_annotations",
976
{}))
977
for name, value in annots.iteritems():
978
ann_tag = document.createElement(
979
"annotation")
980
ann_tag.setAttribute("name", name)
981
ann_tag.setAttribute("value", value)
982
tag.appendChild(ann_tag)
983
# Add interface annotation tags
984
for annotation, value in dict(
985
itertools.chain.from_iterable(
986
annotations().iteritems()
987
for name, annotations in
988
self._get_all_dbus_things("interface")
989
if name == if_tag.getAttribute("name")
990
)).iteritems():
991
ann_tag = document.createElement("annotation")
992
ann_tag.setAttribute("name", annotation)
993
ann_tag.setAttribute("value", value)
994
if_tag.appendChild(ann_tag)
1528
# Add annotation tags for properties
1529
for tag in if_tag.getElementsByTagName("property"):
1530
annots = dict()
1531
for name, prop in self._get_all_dbus_things(
1532
"property"):
1533
if (name == tag.getAttribute("name")
1534
and prop._dbus_interface
1535
== if_tag.getAttribute("name")):
1536
annots.update(getattr(
1537
prop, "_dbus_annotations", {}))
1538
for name, value in annots.items():
1539
ann_tag = document.createElement(
1540
"annotation")
1541
ann_tag.setAttribute("name", name)
1542
ann_tag.setAttribute("value", value)
1543
tag.appendChild(ann_tag)
995
1544
# Add the names to the return values for the
996
1545
# "org.freedesktop.DBus.Properties" methods
997
1546
if (if_tag.getAttribute("name")
1016
1565
return xmlstring
1017
1566
1018
1567
1568
try:
1569
dbus.OBJECT_MANAGER_IFACE
1570
except AttributeError:
1571
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1572
1573
1574
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1575
"""A D-Bus object with an ObjectManager.
1576
1577
Classes inheriting from this exposes the standard
1578
GetManagedObjects call and the InterfacesAdded and
1579
InterfacesRemoved signals on the standard
1580
"org.freedesktop.DBus.ObjectManager" interface.
1581
1582
Note: No signals are sent automatically; they must be sent
1583
manually.
1584
"""
1585
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1586
out_signature="a{oa{sa{sv}}}")
1587
def GetManagedObjects(self):
1588
"""This function must be overridden"""
1589
raise NotImplementedError()
1590
1591
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1592
signature="oa{sa{sv}}")
1593
def InterfacesAdded(self, object_path, interfaces_and_properties):
1594
pass
1595
1596
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1597
def InterfacesRemoved(self, object_path, interfaces):
1598
pass
1599
1600
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1601
out_signature="s",
1602
path_keyword='object_path',
1603
connection_keyword='connection')
1604
def Introspect(self, object_path, connection):
1605
"""Overloading of standard D-Bus method.
1606
1607
Override return argument name of GetManagedObjects to be
1608
"objpath_interfaces_and_properties"
1609
"""
1610
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1611
object_path,
1612
connection)
1613
try:
1614
document = xml.dom.minidom.parseString(xmlstring)
1615
1616
for if_tag in document.getElementsByTagName("interface"):
1617
# Fix argument name for the GetManagedObjects method
1618
if (if_tag.getAttribute("name")
1619
== dbus.OBJECT_MANAGER_IFACE):
1620
for cn in if_tag.getElementsByTagName("method"):
1621
if (cn.getAttribute("name")
1622
== "GetManagedObjects"):
1623
for arg in cn.getElementsByTagName("arg"):
1624
if (arg.getAttribute("direction")
1625
== "out"):
1626
arg.setAttribute(
1627
"name",
1628
"objpath_interfaces"
1629
"_and_properties")
1630
xmlstring = document.toxml("utf-8")
1631
document.unlink()
1632
except (AttributeError, xml.dom.DOMException,
1633
xml.parsers.expat.ExpatError) as error:
1634
logger.error("Failed to override Introspection method",
1635
exc_info=error)
1636
return xmlstring
1637
1638
1019
1639
def datetime_to_dbus(dt, variant_level=0):
1020
1640
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1021
1641
if dt is None:
1022
return dbus.String("", variant_level = variant_level)
1023
return dbus.String(dt.isoformat(),
1024
variant_level=variant_level)
1642
return dbus.String("", variant_level=variant_level)
1643
return dbus.String(dt.isoformat(), variant_level=variant_level)
1025
1644
1026
1645
1027
1646
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1029
1648
dbus.service.Object, it will add alternate D-Bus attributes with
1030
1649
interface names according to the "alt_interface_names" mapping.
1031
1650
Usage:
1032
1651
1033
1652
@alternate_dbus_interfaces({"org.example.Interface":
1034
1653
"net.example.AlternateInterface"})
1035
1654
class SampleDBusObject(dbus.service.Object):
1036
1655
@dbus.service.method("org.example.Interface")
1037
1656
def SampleDBusMethod():
1038
1657
pass
1039
1658
1040
1659
The above "SampleDBusMethod" on "SampleDBusObject" will be
1041
1660
reachable via two interfaces: "org.example.Interface" and
1042
1661
"net.example.AlternateInterface", the latter of which will have
1043
1662
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1044
1663
"true", unless "deprecate" is passed with a False value.
1045
1664
1046
1665
This works for methods and signals, and also for D-Bus properties
1047
1666
(from DBusObjectWithProperties) and interfaces (from the
1048
1667
dbus_interface_annotations decorator).
1049
1668
"""
1669
1050
1670
def wrapper(cls):
1051
1671
for orig_interface_name, alt_interface_name in (
1052
alt_interface_names.iteritems()):
1672
alt_interface_names.items()):
1053
1673
attr = {}
1054
1674
interface_names = set()
1055
1675
# Go though all attributes of the class
1057
1677
# Ignore non-D-Bus attributes, and D-Bus attributes
1058
1678
# with the wrong interface name
1059
1679
if (not hasattr(attribute, "_dbus_interface")
1060
or not attribute._dbus_interface
1061
.startswith(orig_interface_name)):
1680
or not attribute._dbus_interface.startswith(
1681
orig_interface_name)):
1062
1682
continue
1063
1683
# Create an alternate D-Bus interface name based on
1064
1684
# the current name
1065
alt_interface = (attribute._dbus_interface
1066
.replace(orig_interface_name,
1067
alt_interface_name))
1685
alt_interface = attribute._dbus_interface.replace(
1686
orig_interface_name, alt_interface_name)
1068
1687
interface_names.add(alt_interface)
1069
1688
# Is this a D-Bus signal?
1070
1689
if getattr(attribute, "_dbus_is_signal", False):
1071
# Extract the original non-method function by
1072
# black magic
1073
nonmethod_func = (dict(
1690
# Extract the original non-method undecorated
1691
# function by black magic
1692
if sys.version_info.major == 2:
1693
nonmethod_func = (dict(
1074
1694
zip(attribute.func_code.co_freevars,
1075
attribute.__closure__))["func"]
1076
.cell_contents)
1695
attribute.__closure__))
1696
["func"].cell_contents)
1697
else:
1698
nonmethod_func = (dict(
1699
zip(attribute.__code__.co_freevars,
1700
attribute.__closure__))
1701
["func"].cell_contents)
1077
1702
# Create a new, but exactly alike, function
1078
1703
# object, and decorate it to be a new D-Bus signal
1079
1704
# with the alternate D-Bus interface name
1080
new_function = (dbus.service.signal
1081
(alt_interface,
1082
attribute._dbus_signature)
1083
(types.FunctionType(
1084
nonmethod_func.func_code,
1085
nonmethod_func.func_globals,
1086
nonmethod_func.func_name,
1087
nonmethod_func.func_defaults,
1088
nonmethod_func.func_closure)))
1705
new_function = copy_function(nonmethod_func)
1706
new_function = (dbus.service.signal(
1707
alt_interface,
1708
attribute._dbus_signature)(new_function))
1089
1709
# Copy annotations, if any
1090
1710
try:
1091
new_function._dbus_annotations = (
1092
dict(attribute._dbus_annotations))
1711
new_function._dbus_annotations = dict(
1712
attribute._dbus_annotations)
1093
1713
except AttributeError:
1094
1714
pass
1715
1095
1716
# Define a creator of a function to call both the
1096
1717
# original and alternate functions, so both the
1097
1718
# original and alternate signals gets sent when
1100
1721
"""This function is a scope container to pass
1101
1722
func1 and func2 to the "call_both" function
1102
1723
outside of its arguments"""
1724
1725
@functools.wraps(func2)
1103
1726
def call_both(*args, **kwargs):
1104
1727
"""This function will emit two D-Bus
1105
1728
signals by calling func1 and func2"""
1106
1729
func1(*args, **kwargs)
1107
1730
func2(*args, **kwargs)
1731
# Make wrapper function look like a D-Bus
1732
# signal
1733
for name, attr in inspect.getmembers(func2):
1734
if name.startswith("_dbus_"):
1735
setattr(call_both, name, attr)
1736
1108
1737
return call_both
1109
1738
# Create the "call_both" function and add it to
1110
1739
# the class
1115
1744
# object. Decorate it to be a new D-Bus method
1116
1745
# with the alternate D-Bus interface name. Add it
1117
1746
# to the class.
1118
attr[attrname] = (dbus.service.method
1119
(alt_interface,
1120
attribute._dbus_in_signature,
1121
attribute._dbus_out_signature)
1122
(types.FunctionType
1123
(attribute.func_code,
1124
attribute.func_globals,
1125
attribute.func_name,
1126
attribute.func_defaults,
1127
attribute.func_closure)))
1747
attr[attrname] = (
1748
dbus.service.method(
1749
alt_interface,
1750
attribute._dbus_in_signature,
1751
attribute._dbus_out_signature)
1752
(copy_function(attribute)))
1128
1753
# Copy annotations, if any
1129
1754
try:
1130
attr[attrname]._dbus_annotations = (
1131
dict(attribute._dbus_annotations))
1755
attr[attrname]._dbus_annotations = dict(
1756
attribute._dbus_annotations)
1132
1757
except AttributeError:
1133
1758
pass
1134
1759
# Is this a D-Bus property?
1137
1762
# object, and decorate it to be a new D-Bus
1138
1763
# property with the alternate D-Bus interface
1139
1764
# name. Add it to the class.
1140
attr[attrname] = (dbus_service_property
1141
(alt_interface,
1142
attribute._dbus_signature,
1143
attribute._dbus_access,
1144
attribute
1145
._dbus_get_args_options
1146
["byte_arrays"])
1147
(types.FunctionType
1148
(attribute.func_code,
1149
attribute.func_globals,
1150
attribute.func_name,
1151
attribute.func_defaults,
1152
attribute.func_closure)))
1765
attr[attrname] = (dbus_service_property(
1766
alt_interface, attribute._dbus_signature,
1767
attribute._dbus_access,
1768
attribute._dbus_get_args_options
1769
["byte_arrays"])
1770
(copy_function(attribute)))
1153
1771
# Copy annotations, if any
1154
1772
try:
1155
attr[attrname]._dbus_annotations = (
1156
dict(attribute._dbus_annotations))
1773
attr[attrname]._dbus_annotations = dict(
1774
attribute._dbus_annotations)
1157
1775
except AttributeError:
1158
1776
pass
1159
1777
# Is this a D-Bus interface?
1162
1780
# object. Decorate it to be a new D-Bus interface
1163
1781
# with the alternate D-Bus interface name. Add it
1164
1782
# to the class.
1165
attr[attrname] = (dbus_interface_annotations
1166
(alt_interface)
1167
(types.FunctionType
1168
(attribute.func_code,
1169
attribute.func_globals,
1170
attribute.func_name,
1171
attribute.func_defaults,
1172
attribute.func_closure)))
1783
attr[attrname] = (
1784
dbus_interface_annotations(alt_interface)
1785
(copy_function(attribute)))
1173
1786
if deprecate:
1174
1787
# Deprecate all alternate interfaces
1175
iname="_AlternateDBusNames_interface_annotation{0}"
1788
iname = "_AlternateDBusNames_interface_annotation{}"
1176
1789
for interface_name in interface_names:
1790
1177
1791
@dbus_interface_annotations(interface_name)
1178
1792
def func(self):
1179
return { "org.freedesktop.DBus.Deprecated":
1180
"true" }
1793
return {"org.freedesktop.DBus.Deprecated":
1794
"true"}
1181
1795
# Find an unused name
1182
1796
for aname in (iname.format(i)
1183
1797
for i in itertools.count()):
1187
1801
if interface_names:
1188
1802
# Replace the class with a new subclass of it with
1189
1803
# methods, signals, etc. as created above.
1190
cls = type(b"{0}Alternate".format(cls.__name__),
1191
(cls,), attr)
1804
if sys.version_info.major == 2:
1805
cls = type(b"{}Alternate".format(cls.__name__),
1806
(cls, ), attr)
1807
else:
1808
cls = type("{}Alternate".format(cls.__name__),
1809
(cls, ), attr)
1192
1810
return cls
1811
1193
1812
return wrapper
1194
1813
1195
1814
1196
1815
@alternate_dbus_interfaces({"se.recompile.Mandos":
1197
"se.bsnet.fukt.Mandos"})
1816
"se.bsnet.fukt.Mandos"})
1198
1817
class ClientDBus(Client, DBusObjectWithProperties):
1199
1818
"""A Client class using D-Bus
1200
1819
1201
1820
Attributes:
1202
1821
dbus_object_path: dbus.ObjectPath
1203
1822
bus: dbus.SystemBus()
1204
1823
"""
1205
1824
1206
1825
runtime_expansions = (Client.runtime_expansions
1207
+ ("dbus_object_path",))
1208
1826
+ ("dbus_object_path", ))
1827
1828
_interface = "se.recompile.Mandos.Client"
1829
1209
1830
# dbus.service.Object doesn't use super(), so we can't either.
1210
1211
def __init__(self, bus = None, *args, **kwargs):
1831
1832
def __init__(self, bus=None, *args, **kwargs):
1212
1833
self.bus = bus
1213
1834
Client.__init__(self, *args, **kwargs)
1214
1835
# Only now, when this client is initialized, can it show up on
1215
1836
# the D-Bus
1216
client_object_name = unicode(self.name).translate(
1837
client_object_name = str(self.name).translate(
1217
1838
{ord("."): ord("_"),
1218
1839
ord("-"): ord("_")})
1219
self.dbus_object_path = (dbus.ObjectPath
1220
("/clients/" + client_object_name))
1840
self.dbus_object_path = dbus.ObjectPath(
1841
"/clients/" + client_object_name)
1221
1842
DBusObjectWithProperties.__init__(self, self.bus,
1222
1843
self.dbus_object_path)
1223
1224
def notifychangeproperty(transform_func,
1225
dbus_name, type_func=lambda x: x,
1226
variant_level=1):
1844
1845
def notifychangeproperty(transform_func, dbus_name,
1846
type_func=lambda x: x,
1847
variant_level=1,
1848
invalidate_only=False,
1849
_interface=_interface):
1227
1850
""" Modify a variable so that it's a property which announces
1228
1851
its changes to DBus.
1229
1852
1230
1853
transform_fun: Function that takes a value and a variant_level
1231
1854
and transforms it to a D-Bus type.
1232
1855
dbus_name: D-Bus name of the variable
1234
1857
to the D-Bus. Default: no transform
1235
1858
variant_level: D-Bus variant level. Default: 1
1236
1859
"""
1237
attrname = "_{0}".format(dbus_name)
1860
attrname = "_{}".format(dbus_name)
1861
1238
1862
def setter(self, value):
1239
1863
if hasattr(self, "dbus_object_path"):
1240
1864
if (not hasattr(self, attrname) or
1241
1865
type_func(getattr(self, attrname, None))
1242
1866
!= type_func(value)):
1243
dbus_value = transform_func(type_func(value),
1244
variant_level
1245
=variant_level)
1246
self.PropertyChanged(dbus.String(dbus_name),
1247
dbus_value)
1867
if invalidate_only:
1868
self.PropertiesChanged(
1869
_interface, dbus.Dictionary(),
1870
dbus.Array((dbus_name, )))
1871
else:
1872
dbus_value = transform_func(
1873
type_func(value),
1874
variant_level=variant_level)
1875
self.PropertyChanged(dbus.String(dbus_name),
1876
dbus_value)
1877
self.PropertiesChanged(
1878
_interface,
1879
dbus.Dictionary({dbus.String(dbus_name):
1880
dbus_value}),
1881
dbus.Array())
1248
1882
setattr(self, attrname, value)
1249
1883
1250
1884
return property(lambda self: getattr(self, attrname), setter)
1251
1885
1252
1886
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1253
1887
approvals_pending = notifychangeproperty(dbus.Boolean,
1254
1888
"ApprovalPending",
1255
type_func = bool)
1889
type_func=bool)
1256
1890
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1257
1891
last_enabled = notifychangeproperty(datetime_to_dbus,
1258
1892
"LastEnabled")
1259
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1260
type_func = lambda checker:
1261
checker is not None)
1893
checker = notifychangeproperty(
1894
dbus.Boolean, "CheckerRunning",
1895
type_func=lambda checker: checker is not None)
1262
1896
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1263
1897
"LastCheckedOK")
1264
1898
last_checker_status = notifychangeproperty(dbus.Int16,
1267
1901
datetime_to_dbus, "LastApprovalRequest")
1268
1902
approved_by_default = notifychangeproperty(dbus.Boolean,
1269
1903
"ApprovedByDefault")
1270
approval_delay = notifychangeproperty(dbus.UInt64,
1271
"ApprovalDelay",
1272
type_func =
1273
timedelta_to_milliseconds)
1904
approval_delay = notifychangeproperty(
1905
dbus.UInt64, "ApprovalDelay",
1906
type_func=lambda td: td.total_seconds() * 1000)
1274
1907
approval_duration = notifychangeproperty(
1275
1908
dbus.UInt64, "ApprovalDuration",
1276
type_func = timedelta_to_milliseconds)
1909
type_func=lambda td: td.total_seconds() * 1000)
1277
1910
host = notifychangeproperty(dbus.String, "Host")
1278
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1279
type_func =
1280
timedelta_to_milliseconds)
1911
timeout = notifychangeproperty(
1912
dbus.UInt64, "Timeout",
1913
type_func=lambda td: td.total_seconds() * 1000)
1281
1914
extended_timeout = notifychangeproperty(
1282
1915
dbus.UInt64, "ExtendedTimeout",
1283
type_func = timedelta_to_milliseconds)
1284
interval = notifychangeproperty(dbus.UInt64,
1285
"Interval",
1286
type_func =
1287
timedelta_to_milliseconds)
1916
type_func=lambda td: td.total_seconds() * 1000)
1917
interval = notifychangeproperty(
1918
dbus.UInt64, "Interval",
1919
type_func=lambda td: td.total_seconds() * 1000)
1288
1920
checker_command = notifychangeproperty(dbus.String, "Checker")
1289
1921
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1922
invalidate_only=True)
1923
1290
1924
del notifychangeproperty
1291
1925
1292
1926
def __del__(self, *args, **kwargs):
1293
1927
try:
1294
1928
self.remove_from_connection()
1297
1931
if hasattr(DBusObjectWithProperties, "__del__"):
1298
1932
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1299
1933
Client.__del__(self, *args, **kwargs)
1300
1301
def checker_callback(self, pid, condition, command,
1302
*args, **kwargs):
1303
self.checker_callback_tag = None
1304
self.checker = None
1305
if os.WIFEXITED(condition):
1306
exitstatus = os.WEXITSTATUS(condition)
1934
1935
def checker_callback(self, source, condition,
1936
connection, command, *args, **kwargs):
1937
ret = Client.checker_callback(self, source, condition,
1938
connection, command, *args,
1939
**kwargs)
1940
exitstatus = self.last_checker_status
1941
if exitstatus >= 0:
1307
1942
# Emit D-Bus signal
1308
1943
self.CheckerCompleted(dbus.Int16(exitstatus),
1309
dbus.Int64(condition),
1944
# This is specific to GNU libC
1945
dbus.Int64(exitstatus << 8),
1310
1946
dbus.String(command))
1311
1947
else:
1312
1948
# Emit D-Bus signal
1313
1949
self.CheckerCompleted(dbus.Int16(-1),
1314
dbus.Int64(condition),
1950
dbus.Int64(
1951
# This is specific to GNU libC
1952
(exitstatus << 8)
1953
| self.last_checker_signal),
1315
1954
dbus.String(command))
1316
1317
return Client.checker_callback(self, pid, condition, command,
1318
*args, **kwargs)
1319
1955
return ret
1956
1320
1957
def start_checker(self, *args, **kwargs):
1321
old_checker = self.checker
1322
if self.checker is not None:
1323
old_checker_pid = self.checker.pid
1324
else:
1325
old_checker_pid = None
1958
old_checker_pid = getattr(self.checker, "pid", None)
1326
1959
r = Client.start_checker(self, *args, **kwargs)
1327
1960
# Only if new checker process was started
1328
1961
if (self.checker is not None
1330
1963
# Emit D-Bus signal
1331
1964
self.CheckerStarted(self.current_checker_command)
1332
1965
return r
1333
1966
1334
1967
def _reset_approved(self):
1335
1968
self.approved = None
1336
1969
return False
1337
1970
1338
1971
def approve(self, value=True):
1339
1972
self.approved = value
1340
gobject.timeout_add(timedelta_to_milliseconds
1341
(self.approval_duration),
1342
self._reset_approved)
1973
GLib.timeout_add(int(self.approval_duration.total_seconds()
1974
* 1000), self._reset_approved)
1343
1975
self.send_changedstate()
1344
1345
## D-Bus methods, signals & properties
1346
_interface = "se.recompile.Mandos.Client"
1347
1348
## Interfaces
1349
1350
@dbus_interface_annotations(_interface)
1351
def _foo(self):
1352
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1353
"false"}
1354
1355
## Signals
1356
1976
1977
# D-Bus methods, signals & properties
1978
1979
# Interfaces
1980
1981
# Signals
1982
1357
1983
# CheckerCompleted - signal
1358
1984
@dbus.service.signal(_interface, signature="nxs")
1359
1985
def CheckerCompleted(self, exitcode, waitstatus, command):
1360
1986
"D-Bus signal"
1361
1987
pass
1362
1988
1363
1989
# CheckerStarted - signal
1364
1990
@dbus.service.signal(_interface, signature="s")
1365
1991
def CheckerStarted(self, command):
1366
1992
"D-Bus signal"
1367
1993
pass
1368
1994
1369
1995
# PropertyChanged - signal
1996
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1370
1997
@dbus.service.signal(_interface, signature="sv")
1371
1998
def PropertyChanged(self, property, value):
1372
1999
"D-Bus signal"
1373
2000
pass
1374
2001
1375
2002
# GotSecret - signal
1376
2003
@dbus.service.signal(_interface)
1377
2004
def GotSecret(self):
1380
2007
server to mandos-client
1381
2008
"""
1382
2009
pass
1383
2010
1384
2011
# Rejected - signal
1385
2012
@dbus.service.signal(_interface, signature="s")
1386
2013
def Rejected(self, reason):
1387
2014
"D-Bus signal"
1388
2015
pass
1389
2016
1390
2017
# NeedApproval - signal
1391
2018
@dbus.service.signal(_interface, signature="tb")
1392
2019
def NeedApproval(self, timeout, default):
1393
2020
"D-Bus signal"
1394
2021
return self.need_approval()
1395
1396
## Methods
1397
2022
2023
# Methods
2024
1398
2025
# Approve - method
1399
2026
@dbus.service.method(_interface, in_signature="b")
1400
2027
def Approve(self, value):
1401
2028
self.approve(value)
1402
2029
1403
2030
# CheckedOK - method
1404
2031
@dbus.service.method(_interface)
1405
2032
def CheckedOK(self):
1406
2033
self.checked_ok()
1407
2034
1408
2035
# Enable - method
2036
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1409
2037
@dbus.service.method(_interface)
1410
2038
def Enable(self):
1411
2039
"D-Bus method"
1412
2040
self.enable()
1413
2041
1414
2042
# StartChecker - method
2043
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1415
2044
@dbus.service.method(_interface)
1416
2045
def StartChecker(self):
1417
2046
"D-Bus method"
1418
2047
self.start_checker()
1419
2048
1420
2049
# Disable - method
2050
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1421
2051
@dbus.service.method(_interface)
1422
2052
def Disable(self):
1423
2053
"D-Bus method"
1424
2054
self.disable()
1425
2055
1426
2056
# StopChecker - method
2057
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1427
2058
@dbus.service.method(_interface)
1428
2059
def StopChecker(self):
1429
2060
self.stop_checker()
1430
1431
## Properties
1432
2061
2062
# Properties
2063
1433
2064
# ApprovalPending - property
1434
2065
@dbus_service_property(_interface, signature="b", access="read")
1435
2066
def ApprovalPending_dbus_property(self):
1436
2067
return dbus.Boolean(bool(self.approvals_pending))
1437
2068
1438
2069
# ApprovedByDefault - property
1439
@dbus_service_property(_interface, signature="b",
2070
@dbus_service_property(_interface,
2071
signature="b",
1440
2072
access="readwrite")
1441
2073
def ApprovedByDefault_dbus_property(self, value=None):
1442
2074
if value is None: # get
1443
2075
return dbus.Boolean(self.approved_by_default)
1444
2076
self.approved_by_default = bool(value)
1445
2077
1446
2078
# ApprovalDelay - property
1447
@dbus_service_property(_interface, signature="t",
2079
@dbus_service_property(_interface,
2080
signature="t",
1448
2081
access="readwrite")
1449
2082
def ApprovalDelay_dbus_property(self, value=None):
1450
2083
if value is None: # get
1451
return dbus.UInt64(self.approval_delay_milliseconds())
2084
return dbus.UInt64(self.approval_delay.total_seconds()
2085
* 1000)
1452
2086
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1453
2087
1454
2088
# ApprovalDuration - property
1455
@dbus_service_property(_interface, signature="t",
2089
@dbus_service_property(_interface,
2090
signature="t",
1456
2091
access="readwrite")
1457
2092
def ApprovalDuration_dbus_property(self, value=None):
1458
2093
if value is None: # get
1459
return dbus.UInt64(timedelta_to_milliseconds(
1460
self.approval_duration))
2094
return dbus.UInt64(self.approval_duration.total_seconds()
2095
* 1000)
1461
2096
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1462
2097
1463
2098
# Name - property
2099
@dbus_annotations(
2100
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1464
2101
@dbus_service_property(_interface, signature="s", access="read")
1465
2102
def Name_dbus_property(self):
1466
2103
return dbus.String(self.name)
1467
2104
2105
# KeyID - property
2106
@dbus_annotations(
2107
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2108
@dbus_service_property(_interface, signature="s", access="read")
2109
def KeyID_dbus_property(self):
2110
return dbus.String(self.key_id)
2111
1468
2112
# Fingerprint - property
2113
@dbus_annotations(
2114
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1469
2115
@dbus_service_property(_interface, signature="s", access="read")
1470
2116
def Fingerprint_dbus_property(self):
1471
2117
return dbus.String(self.fingerprint)
1472
2118
1473
2119
# Host - property
1474
@dbus_service_property(_interface, signature="s",
2120
@dbus_service_property(_interface,
2121
signature="s",
1475
2122
access="readwrite")
1476
2123
def Host_dbus_property(self, value=None):
1477
2124
if value is None: # get
1478
2125
return dbus.String(self.host)
1479
self.host = unicode(value)
1480
2126
self.host = str(value)
2127
1481
2128
# Created - property
2129
@dbus_annotations(
2130
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1482
2131
@dbus_service_property(_interface, signature="s", access="read")
1483
2132
def Created_dbus_property(self):
1484
2133
return datetime_to_dbus(self.created)
1485
2134
1486
2135
# LastEnabled - property
1487
2136
@dbus_service_property(_interface, signature="s", access="read")
1488
2137
def LastEnabled_dbus_property(self):
1489
2138
return datetime_to_dbus(self.last_enabled)
1490
2139
1491
2140
# Enabled - property
1492
@dbus_service_property(_interface, signature="b",
2141
@dbus_service_property(_interface,
2142
signature="b",
1493
2143
access="readwrite")
1494
2144
def Enabled_dbus_property(self, value=None):
1495
2145
if value is None: # get
1498
2148
self.enable()
1499
2149
else:
1500
2150
self.disable()
1501
2151
1502
2152
# LastCheckedOK - property
1503
@dbus_service_property(_interface, signature="s",
2153
@dbus_service_property(_interface,
2154
signature="s",
1504
2155
access="readwrite")
1505
2156
def LastCheckedOK_dbus_property(self, value=None):
1506
2157
if value is not None:
1507
2158
self.checked_ok()
1508
2159
return
1509
2160
return datetime_to_dbus(self.last_checked_ok)
1510
2161
1511
2162
# LastCheckerStatus - property
1512
@dbus_service_property(_interface, signature="n",
1513
access="read")
2163
@dbus_service_property(_interface, signature="n", access="read")
1514
2164
def LastCheckerStatus_dbus_property(self):
1515
2165
return dbus.Int16(self.last_checker_status)
1516
2166
1517
2167
# Expires - property
1518
2168
@dbus_service_property(_interface, signature="s", access="read")
1519
2169
def Expires_dbus_property(self):
1520
2170
return datetime_to_dbus(self.expires)
1521
2171
1522
2172
# LastApprovalRequest - property
1523
2173
@dbus_service_property(_interface, signature="s", access="read")
1524
2174
def LastApprovalRequest_dbus_property(self):
1525
2175
return datetime_to_dbus(self.last_approval_request)
1526
2176
1527
2177
# Timeout - property
1528
@dbus_service_property(_interface, signature="t",
2178
@dbus_service_property(_interface,
2179
signature="t",
1529
2180
access="readwrite")
1530
2181
def Timeout_dbus_property(self, value=None):
1531
2182
if value is None: # get
1532
return dbus.UInt64(self.timeout_milliseconds())
2183
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1533
2184
old_timeout = self.timeout
1534
2185
self.timeout = datetime.timedelta(0, 0, 0, value)
1535
2186
# Reschedule disabling
1543
2194
if (getattr(self, "disable_initiator_tag", None)
1544
2195
is None):
1545
2196
return
1546
gobject.source_remove(self.disable_initiator_tag)
1547
self.disable_initiator_tag = (
1548
gobject.timeout_add(
1549
timedelta_to_milliseconds(self.expires - now),
1550
self.disable))
1551
2197
GLib.source_remove(self.disable_initiator_tag)
2198
self.disable_initiator_tag = GLib.timeout_add(
2199
int((self.expires - now).total_seconds() * 1000),
2200
self.disable)
2201
1552
2202
# ExtendedTimeout - property
1553
@dbus_service_property(_interface, signature="t",
2203
@dbus_service_property(_interface,
2204
signature="t",
1554
2205
access="readwrite")
1555
2206
def ExtendedTimeout_dbus_property(self, value=None):
1556
2207
if value is None: # get
1557
return dbus.UInt64(self.extended_timeout_milliseconds())
2208
return dbus.UInt64(self.extended_timeout.total_seconds()
2209
* 1000)
1558
2210
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1559
2211
1560
2212
# Interval - property
1561
@dbus_service_property(_interface, signature="t",
2213
@dbus_service_property(_interface,
2214
signature="t",
1562
2215
access="readwrite")
1563
2216
def Interval_dbus_property(self, value=None):
1564
2217
if value is None: # get
1565
return dbus.UInt64(self.interval_milliseconds())
2218
return dbus.UInt64(self.interval.total_seconds() * 1000)
1566
2219
self.interval = datetime.timedelta(0, 0, 0, value)
1567
2220
if getattr(self, "checker_initiator_tag", None) is None:
1568
2221
return
1569
2222
if self.enabled:
1570
2223
# Reschedule checker run
1571
gobject.source_remove(self.checker_initiator_tag)
1572
self.checker_initiator_tag = (gobject.timeout_add
1573
(value, self.start_checker))
1574
self.start_checker() # Start one now, too
1575
2224
GLib.source_remove(self.checker_initiator_tag)
2225
self.checker_initiator_tag = GLib.timeout_add(
2226
value, self.start_checker)
2227
self.start_checker() # Start one now, too
2228
1576
2229
# Checker - property
1577
@dbus_service_property(_interface, signature="s",
2230
@dbus_service_property(_interface,
2231
signature="s",
1578
2232
access="readwrite")
1579
2233
def Checker_dbus_property(self, value=None):
1580
2234
if value is None: # get
1581
2235
return dbus.String(self.checker_command)
1582
self.checker_command = unicode(value)
1583
2236
self.checker_command = str(value)
2237
1584
2238
# CheckerRunning - property
1585
@dbus_service_property(_interface, signature="b",
2239
@dbus_service_property(_interface,
2240
signature="b",
1586
2241
access="readwrite")
1587
2242
def CheckerRunning_dbus_property(self, value=None):
1588
2243
if value is None: # get
1591
2246
self.start_checker()
1592
2247
else:
1593
2248
self.stop_checker()
1594
2249
1595
2250
# ObjectPath - property
2251
@dbus_annotations(
2252
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2253
"org.freedesktop.DBus.Deprecated": "true"})
1596
2254
@dbus_service_property(_interface, signature="o", access="read")
1597
2255
def ObjectPath_dbus_property(self):
1598
return self.dbus_object_path # is already a dbus.ObjectPath
1599
2256
return self.dbus_object_path # is already a dbus.ObjectPath
2257
1600
2258
# Secret = property
1601
@dbus_service_property(_interface, signature="ay",
1602
access="write", byte_arrays=True)
2259
@dbus_annotations(
2260
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2261
"invalidates"})
2262
@dbus_service_property(_interface,
2263
signature="ay",
2264
access="write",
2265
byte_arrays=True)
1603
2266
def Secret_dbus_property(self, value):
1604
self.secret = str(value)
1605
2267
self.secret = bytes(value)
2268
1606
2269
del _interface
1607
2270
1608
2271
1609
class ProxyClient(object):
1610
def __init__(self, child_pipe, fpr, address):
2272
class ProxyClient:
2273
def __init__(self, child_pipe, key_id, fpr, address):
1611
2274
self._pipe = child_pipe
1612
self._pipe.send(('init', fpr, address))
2275
self._pipe.send(('init', key_id, fpr, address))
1613
2276
if not self._pipe.recv():
1614
raise KeyError()
1615
2277
raise KeyError(key_id or fpr)
2278
1616
2279
def __getattribute__(self, name):
1617
2280
if name == '_pipe':
1618
2281
return super(ProxyClient, self).__getattribute__(name)
1621
2284
if data[0] == 'data':
1622
2285
return data[1]
1623
2286
if data[0] == 'function':
2287
1624
2288
def func(*args, **kwargs):
1625
2289
self._pipe.send(('funcall', name, args, kwargs))
1626
2290
return self._pipe.recv()[1]
2291
1627
2292
return func
1628
2293
1629
2294
def __setattr__(self, name, value):
1630
2295
if name == '_pipe':
1631
2296
return super(ProxyClient, self).__setattr__(name, value)
1634
2299
1635
2300
class ClientHandler(socketserver.BaseRequestHandler, object):
1636
2301
"""A class to handle client connections.
1637
2302
1638
2303
Instantiated once for each connection to handle it.
1639
2304
Note: This will run in its own forked process."""
1640
2305
1641
2306
def handle(self):
1642
2307
with contextlib.closing(self.server.child_pipe) as child_pipe:
1643
2308
logger.info("TCP connection from: %s",
1644
unicode(self.client_address))
2309
str(self.client_address))
1645
2310
logger.debug("Pipe FD: %d",
1646
2311
self.server.child_pipe.fileno())
1647
1648
session = (gnutls.connection
1649
.ClientSession(self.request,
1650
gnutls.connection
1651
.X509Credentials()))
1652
1653
# Note: gnutls.connection.X509Credentials is really a
1654
# generic GnuTLS certificate credentials object so long as
1655
# no X.509 keys are added to it. Therefore, we can use it
1656
# here despite using OpenPGP certificates.
1657
1658
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1659
# "+AES-256-CBC", "+SHA1",
1660
# "+COMP-NULL", "+CTYPE-OPENPGP",
1661
# "+DHE-DSS"))
2312
2313
session = gnutls.ClientSession(self.request)
2314
2315
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2316
# "+AES-256-CBC", "+SHA1",
2317
# "+COMP-NULL", "+CTYPE-OPENPGP",
2318
# "+DHE-DSS"))
1662
2319
# Use a fallback default, since this MUST be set.
1663
2320
priority = self.server.gnutls_priority
1664
2321
if priority is None:
1665
2322
priority = "NORMAL"
1666
(gnutls.library.functions
1667
.gnutls_priority_set_direct(session._c_object,
1668
priority, None))
1669
2323
gnutls.priority_set_direct(session,
2324
priority.encode("utf-8"), None)
2325
1670
2326
# Start communication using the Mandos protocol
1671
2327
# Get protocol number
1672
2328
line = self.request.makefile().readline()
1673
2329
logger.debug("Protocol version: %r", line)
1674
2330
try:
1675
2331
if int(line.strip().split()[0]) > 1:
1676
raise RuntimeError
2332
raise RuntimeError(line)
1677
2333
except (ValueError, IndexError, RuntimeError) as error:
1678
2334
logger.error("Unknown protocol version: %s", error)
1679
2335
return
1680
2336
1681
2337
# Start GnuTLS connection
1682
2338
try:
1683
2339
session.handshake()
1684
except gnutls.errors.GNUTLSError as error:
2340
except gnutls.Error as error:
1685
2341
logger.warning("Handshake failed: %s", error)
1686
2342
# Do not run session.bye() here: the session is not
1687
2343
# established. Just abandon the request.
1688
2344
return
1689
2345
logger.debug("Handshake succeeded")
1690
2346
1691
2347
approval_required = False
1692
2348
try:
1693
try:
1694
fpr = self.fingerprint(self.peer_certificate
1695
(session))
1696
except (TypeError,
1697
gnutls.errors.GNUTLSError) as error:
1698
logger.warning("Bad certificate: %s", error)
1699
return
1700
logger.debug("Fingerprint: %s", fpr)
1701
1702
try:
1703
client = ProxyClient(child_pipe, fpr,
2349
if gnutls.has_rawpk:
2350
fpr = b""
2351
try:
2352
key_id = self.key_id(
2353
self.peer_certificate(session))
2354
except (TypeError, gnutls.Error) as error:
2355
logger.warning("Bad certificate: %s", error)
2356
return
2357
logger.debug("Key ID: %s",
2358
key_id.decode("utf-8",
2359
errors="replace"))
2360
2361
else:
2362
key_id = b""
2363
try:
2364
fpr = self.fingerprint(
2365
self.peer_certificate(session))
2366
except (TypeError, gnutls.Error) as error:
2367
logger.warning("Bad certificate: %s", error)
2368
return
2369
logger.debug("Fingerprint: %s", fpr)
2370
2371
try:
2372
client = ProxyClient(child_pipe, key_id, fpr,
1704
2373
self.client_address)
1705
2374
except KeyError:
1706
2375
return
1707
2376
1708
2377
if client.approval_delay:
1709
2378
delay = client.approval_delay
1710
2379
client.approvals_pending += 1
1711
2380
approval_required = True
1712
2381
1713
2382
while True:
1714
2383
if not client.enabled:
1715
2384
logger.info("Client %s is disabled",
1716
client.name)
2385
client.name)
1717
2386
if self.server.use_dbus:
1718
2387
# Emit D-Bus signal
1719
2388
client.Rejected("Disabled")
1720
2389
return
1721
2390
1722
2391
if client.approved or not client.approval_delay:
1723
#We are approved or approval is disabled
2392
# We are approved or approval is disabled
1724
2393
break
1725
2394
elif client.approved is None:
1726
2395
logger.info("Client %s needs approval",
1728
2397
if self.server.use_dbus:
1729
2398
# Emit D-Bus signal
1730
2399
client.NeedApproval(
1731
client.approval_delay_milliseconds(),
1732
client.approved_by_default)
2400
client.approval_delay.total_seconds()
2401
* 1000, client.approved_by_default)
1733
2402
else:
1734
2403
logger.warning("Client %s was not approved",
1735
2404
client.name)
1737
2406
# Emit D-Bus signal
1738
2407
client.Rejected("Denied")
1739
2408
return
1740
1741
#wait until timeout or approved
2409
2410
# wait until timeout or approved
1742
2411
time = datetime.datetime.now()
1743
2412
client.changedstate.acquire()
1744
client.changedstate.wait(
1745
float(timedelta_to_milliseconds(delay)
1746
/ 1000))
2413
client.changedstate.wait(delay.total_seconds())
1747
2414
client.changedstate.release()
1748
2415
time2 = datetime.datetime.now()
1749
2416
if (time2 - time) >= delay:
1759
2426
break
1760
2427
else:
1761
2428
delay -= time2 - time
1762
1763
sent_size = 0
1764
while sent_size < len(client.secret):
1765
try:
1766
sent = session.send(client.secret[sent_size:])
1767
except gnutls.errors.GNUTLSError as error:
1768
logger.warning("gnutls send failed",
1769
exc_info=error)
1770
return
1771
logger.debug("Sent: %d, remaining: %d",
1772
sent, len(client.secret)
1773
- (sent_size + sent))
1774
sent_size += sent
1775
2429
2430
try:
2431
session.send(client.secret)
2432
except gnutls.Error as error:
2433
logger.warning("gnutls send failed",
2434
exc_info=error)
2435
return
2436
1776
2437
logger.info("Sending secret to %s", client.name)
1777
2438
# bump the timeout using extended_timeout
1778
2439
client.bump_timeout(client.extended_timeout)
1779
2440
if self.server.use_dbus:
1780
2441
# Emit D-Bus signal
1781
2442
client.GotSecret()
1782
2443
1783
2444
finally:
1784
2445
if approval_required:
1785
2446
client.approvals_pending -= 1
1786
2447
try:
1787
2448
session.bye()
1788
except gnutls.errors.GNUTLSError as error:
2449
except gnutls.Error as error:
1789
2450
logger.warning("GnuTLS bye failed",
1790
2451
exc_info=error)
1791
2452
1792
2453
@staticmethod
1793
2454
def peer_certificate(session):
1794
"Return the peer's OpenPGP certificate as a bytestring"
1795
# If not an OpenPGP certificate...
1796
if (gnutls.library.functions
1797
.gnutls_certificate_type_get(session._c_object)
1798
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1799
# ...do the normal thing
1800
return session.peer_certificate
2455
"Return the peer's certificate as a bytestring"
2456
try:
2457
cert_type = gnutls.certificate_type_get2(
2458
session, gnutls.CTYPE_PEERS)
2459
except AttributeError:
2460
cert_type = gnutls.certificate_type_get(session)
2461
if gnutls.has_rawpk:
2462
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2463
else:
2464
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2465
# If not a valid certificate type...
2466
if cert_type not in valid_cert_types:
2467
logger.info("Cert type %r not in %r", cert_type,
2468
valid_cert_types)
2469
# ...return invalid data
2470
return b""
1801
2471
list_size = ctypes.c_uint(1)
1802
cert_list = (gnutls.library.functions
1803
.gnutls_certificate_get_peers
1804
(session._c_object, ctypes.byref(list_size)))
2472
cert_list = (gnutls.certificate_get_peers
2473
(session, ctypes.byref(list_size)))
1805
2474
if not bool(cert_list) and list_size.value != 0:
1806
raise gnutls.errors.GNUTLSError("error getting peer"
1807
" certificate")
2475
raise gnutls.Error("error getting peer certificate")
1808
2476
if list_size.value == 0:
1809
2477
return None
1810
2478
cert = cert_list[0]
1811
2479
return ctypes.string_at(cert.data, cert.size)
1812
2480
2481
@staticmethod
2482
def key_id(certificate):
2483
"Convert a certificate bytestring to a hexdigit key ID"
2484
# New GnuTLS "datum" with the public key
2485
datum = gnutls.datum_t(
2486
ctypes.cast(ctypes.c_char_p(certificate),
2487
ctypes.POINTER(ctypes.c_ubyte)),
2488
ctypes.c_uint(len(certificate)))
2489
# XXX all these need to be created in the gnutls "module"
2490
# New empty GnuTLS certificate
2491
pubkey = gnutls.pubkey_t()
2492
gnutls.pubkey_init(ctypes.byref(pubkey))
2493
# Import the raw public key into the certificate
2494
gnutls.pubkey_import(pubkey,
2495
ctypes.byref(datum),
2496
gnutls.X509_FMT_DER)
2497
# New buffer for the key ID
2498
buf = ctypes.create_string_buffer(32)
2499
buf_len = ctypes.c_size_t(len(buf))
2500
# Get the key ID from the raw public key into the buffer
2501
gnutls.pubkey_get_key_id(
2502
pubkey,
2503
gnutls.KEYID_USE_SHA256,
2504
ctypes.cast(ctypes.byref(buf),
2505
ctypes.POINTER(ctypes.c_ubyte)),
2506
ctypes.byref(buf_len))
2507
# Deinit the certificate
2508
gnutls.pubkey_deinit(pubkey)
2509
2510
# Convert the buffer to a Python bytestring
2511
key_id = ctypes.string_at(buf, buf_len.value)
2512
# Convert the bytestring to hexadecimal notation
2513
hex_key_id = binascii.hexlify(key_id).upper()
2514
return hex_key_id
2515
1813
2516
@staticmethod
1814
2517
def fingerprint(openpgp):
1815
2518
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1816
2519
# New GnuTLS "datum" with the OpenPGP public key
1817
datum = (gnutls.library.types
1818
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1819
ctypes.POINTER
1820
(ctypes.c_ubyte)),
1821
ctypes.c_uint(len(openpgp))))
2520
datum = gnutls.datum_t(
2521
ctypes.cast(ctypes.c_char_p(openpgp),
2522
ctypes.POINTER(ctypes.c_ubyte)),
2523
ctypes.c_uint(len(openpgp)))
1822
2524
# New empty GnuTLS certificate
1823
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1824
(gnutls.library.functions
1825
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2525
crt = gnutls.openpgp_crt_t()
2526
gnutls.openpgp_crt_init(ctypes.byref(crt))
1826
2527
# Import the OpenPGP public key into the certificate
1827
(gnutls.library.functions
1828
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1829
gnutls.library.constants
1830
.GNUTLS_OPENPGP_FMT_RAW))
2528
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2529
gnutls.OPENPGP_FMT_RAW)
1831
2530
# Verify the self signature in the key
1832
2531
crtverify = ctypes.c_uint()
1833
(gnutls.library.functions
1834
.gnutls_openpgp_crt_verify_self(crt, 0,
1835
ctypes.byref(crtverify)))
2532
gnutls.openpgp_crt_verify_self(crt, 0,
2533
ctypes.byref(crtverify))
1836
2534
if crtverify.value != 0:
1837
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1838
raise (gnutls.errors.CertificateSecurityError
1839
("Verify failed"))
2535
gnutls.openpgp_crt_deinit(crt)
2536
raise gnutls.CertificateSecurityError(code
2537
=crtverify.value)
1840
2538
# New buffer for the fingerprint
1841
2539
buf = ctypes.create_string_buffer(20)
1842
2540
buf_len = ctypes.c_size_t()
1843
2541
# Get the fingerprint from the certificate into the buffer
1844
(gnutls.library.functions
1845
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1846
ctypes.byref(buf_len)))
2542
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2543
ctypes.byref(buf_len))
1847
2544
# Deinit the certificate
1848
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2545
gnutls.openpgp_crt_deinit(crt)
1849
2546
# Convert the buffer to a Python bytestring
1850
2547
fpr = ctypes.string_at(buf, buf_len.value)
1851
2548
# Convert the bytestring to hexadecimal notation
1853
2550
return hex_fpr
1854
2551
1855
2552
1856
class MultiprocessingMixIn(object):
2553
class MultiprocessingMixIn:
1857
2554
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2555
1858
2556
def sub_process_main(self, request, address):
1859
2557
try:
1860
2558
self.finish_request(request, address)
1861
2559
except Exception:
1862
2560
self.handle_error(request, address)
1863
2561
self.close_request(request)
1864
2562
1865
2563
def process_request(self, request, address):
1866
2564
"""Start a new process to process the request."""
1867
proc = multiprocessing.Process(target = self.sub_process_main,
1868
args = (request, address))
2565
proc = multiprocessing.Process(target=self.sub_process_main,
2566
args=(request, address))
1869
2567
proc.start()
1870
2568
return proc
1871
2569
1872
2570
1873
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2571
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1874
2572
""" adds a pipe to the MixIn """
2573
1875
2574
def process_request(self, request, client_address):
1876
2575
"""Overrides and wraps the original process_request().
1877
2576
1878
2577
This function creates a new pipe in self.pipe
1879
2578
"""
1880
2579
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1881
2580
1882
2581
proc = MultiprocessingMixIn.process_request(self, request,
1883
2582
client_address)
1884
2583
self.child_pipe.close()
1885
2584
self.add_pipe(parent_pipe, proc)
1886
2585
1887
2586
def add_pipe(self, parent_pipe, proc):
1888
2587
"""Dummy function; override as necessary"""
1889
raise NotImplementedError
2588
raise NotImplementedError()
1890
2589
1891
2590
1892
2591
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1893
socketserver.TCPServer, object):
2592
socketserver.TCPServer):
1894
2593
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1895
2594
1896
2595
Attributes:
1897
2596
enabled: Boolean; whether this server is activated yet
1898
2597
interface: None or a network interface name (string)
1899
2598
use_ipv6: Boolean; to use IPv6 or not
1900
2599
"""
2600
1901
2601
def __init__(self, server_address, RequestHandlerClass,
1902
interface=None, use_ipv6=True, socketfd=None):
2602
interface=None,
2603
use_ipv6=True,
2604
socketfd=None):
1903
2605
"""If socketfd is set, use that file descriptor instead of
1904
2606
creating a new one with socket.socket().
1905
2607
"""
1911
2613
self.socketfd = socketfd
1912
2614
# Save the original socket.socket() function
1913
2615
self.socket_socket = socket.socket
2616
1914
2617
# To implement --socket, we monkey patch socket.socket.
1915
#
2618
#
1916
2619
# (When socketserver.TCPServer is a new-style class, we
1917
2620
# could make self.socket into a property instead of monkey
1918
2621
# patching socket.socket.)
1919
#
2622
#
1920
2623
# Create a one-time-only replacement for socket.socket()
1921
2624
@functools.wraps(socket.socket)
1922
2625
def socket_wrapper(*args, **kwargs):
1934
2637
# socket_wrapper(), if socketfd was set.
1935
2638
socketserver.TCPServer.__init__(self, server_address,
1936
2639
RequestHandlerClass)
1937
2640
1938
2641
def server_bind(self):
1939
2642
"""This overrides the normal server_bind() function
1940
2643
to bind to an interface if one was specified, and also NOT to
1941
2644
bind to an address or port if they were not specified."""
2645
global SO_BINDTODEVICE
1942
2646
if self.interface is not None:
1943
2647
if SO_BINDTODEVICE is None:
1944
logger.error("SO_BINDTODEVICE does not exist;"
1945
" cannot bind to interface %s",
1946
self.interface)
1947
else:
1948
try:
1949
self.socket.setsockopt(socket.SOL_SOCKET,
1950
SO_BINDTODEVICE,
1951
str(self.interface
1952
+ '\0'))
1953
except socket.error as error:
1954
if error.errno == errno.EPERM:
1955
logger.error("No permission to"
1956
" bind to interface %s",
1957
self.interface)
1958
elif error.errno == errno.ENOPROTOOPT:
1959
logger.error("SO_BINDTODEVICE not available;"
1960
" cannot bind to interface %s",
1961
self.interface)
1962
elif error.errno == errno.ENODEV:
1963
logger.error("Interface %s does not"
1964
" exist, cannot bind",
1965
self.interface)
1966
else:
1967
raise
2648
# Fall back to a hard-coded value which seems to be
2649
# common enough.
2650
logger.warning("SO_BINDTODEVICE not found, trying 25")
2651
SO_BINDTODEVICE = 25
2652
try:
2653
self.socket.setsockopt(
2654
socket.SOL_SOCKET, SO_BINDTODEVICE,
2655
(self.interface + "\0").encode("utf-8"))
2656
except socket.error as error:
2657
if error.errno == errno.EPERM:
2658
logger.error("No permission to bind to"
2659
" interface %s", self.interface)
2660
elif error.errno == errno.ENOPROTOOPT:
2661
logger.error("SO_BINDTODEVICE not available;"
2662
" cannot bind to interface %s",
2663
self.interface)
2664
elif error.errno == errno.ENODEV:
2665
logger.error("Interface %s does not exist,"
2666
" cannot bind", self.interface)
2667
else:
2668
raise
1968
2669
# Only bind(2) the socket if we really need to.
1969
2670
if self.server_address[0] or self.server_address[1]:
2671
if self.server_address[1]:
2672
self.allow_reuse_address = True
1970
2673
if not self.server_address[0]:
1971
2674
if self.address_family == socket.AF_INET6:
1972
any_address = "::" # in6addr_any
2675
any_address = "::" # in6addr_any
1973
2676
else:
1974
any_address = socket.INADDR_ANY
2677
any_address = "0.0.0.0" # INADDR_ANY
1975
2678
self.server_address = (any_address,
1976
2679
self.server_address[1])
1977
2680
elif not self.server_address[1]:
1978
self.server_address = (self.server_address[0],
1979
0)
2681
self.server_address = (self.server_address[0], 0)
1980
2682
# if self.interface:
1981
2683
# self.server_address = (self.server_address[0],
1982
2684
# 0, # port
1988
2690
1989
2691
class MandosServer(IPv6_TCPServer):
1990
2692
"""Mandos server.
1991
2693
1992
2694
Attributes:
1993
2695
clients: set of Client objects
1994
2696
gnutls_priority GnuTLS priority string
1995
2697
use_dbus: Boolean; to emit D-Bus signals or not
1996
1997
Assumes a gobject.MainLoop event loop.
2698
2699
Assumes a GLib.MainLoop event loop.
1998
2700
"""
2701
1999
2702
def __init__(self, server_address, RequestHandlerClass,
2000
interface=None, use_ipv6=True, clients=None,
2001
gnutls_priority=None, use_dbus=True, socketfd=None):
2703
interface=None,
2704
use_ipv6=True,
2705
clients=None,
2706
gnutls_priority=None,
2707
use_dbus=True,
2708
socketfd=None):
2002
2709
self.enabled = False
2003
2710
self.clients = clients
2004
2711
if self.clients is None:
2007
2714
self.gnutls_priority = gnutls_priority
2008
2715
IPv6_TCPServer.__init__(self, server_address,
2009
2716
RequestHandlerClass,
2010
interface = interface,
2011
use_ipv6 = use_ipv6,
2012
socketfd = socketfd)
2717
interface=interface,
2718
use_ipv6=use_ipv6,
2719
socketfd=socketfd)
2720
2013
2721
def server_activate(self):
2014
2722
if self.enabled:
2015
2723
return socketserver.TCPServer.server_activate(self)
2016
2724
2017
2725
def enable(self):
2018
2726
self.enabled = True
2019
2727
2020
2728
def add_pipe(self, parent_pipe, proc):
2021
2729
# Call "handle_ipc" for both data and EOF events
2022
gobject.io_add_watch(parent_pipe.fileno(),
2023
gobject.IO_IN | gobject.IO_HUP,
2024
functools.partial(self.handle_ipc,
2025
parent_pipe =
2026
parent_pipe,
2027
proc = proc))
2028
2029
def handle_ipc(self, source, condition, parent_pipe=None,
2030
proc = None, client_object=None):
2730
GLib.io_add_watch(
2731
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2732
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2733
functools.partial(self.handle_ipc,
2734
parent_pipe=parent_pipe,
2735
proc=proc))
2736
2737
def handle_ipc(self, source, condition,
2738
parent_pipe=None,
2739
proc=None,
2740
client_object=None):
2031
2741
# error, or the other end of multiprocessing.Pipe has closed
2032
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2742
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2033
2743
# Wait for other process to exit
2034
2744
proc.join()
2035
2745
return False
2036
2746
2037
2747
# Read a request from the child
2038
2748
request = parent_pipe.recv()
2039
2749
command = request[0]
2040
2750
2041
2751
if command == 'init':
2042
fpr = request[1]
2043
address = request[2]
2044
2045
for c in self.clients.itervalues():
2046
if c.fingerprint == fpr:
2752
key_id = request[1].decode("ascii")
2753
fpr = request[2].decode("ascii")
2754
address = request[3]
2755
2756
for c in self.clients.values():
2757
if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"
2758
"27AE41E4649B934CA495991B7852B855"):
2759
continue
2760
if key_id and c.key_id == key_id:
2761
client = c
2762
break
2763
if fpr and c.fingerprint == fpr:
2047
2764
client = c
2048
2765
break
2049
2766
else:
2050
logger.info("Client not found for fingerprint: %s, ad"
2051
"dress: %s", fpr, address)
2767
logger.info("Client not found for key ID: %s, address"
2768
": %s", key_id or fpr, address)
2052
2769
if self.use_dbus:
2053
2770
# Emit D-Bus signal
2054
mandos_dbus_service.ClientNotFound(fpr,
2771
mandos_dbus_service.ClientNotFound(key_id or fpr,
2055
2772
address[0])
2056
2773
parent_pipe.send(False)
2057
2774
return False
2058
2059
gobject.io_add_watch(parent_pipe.fileno(),
2060
gobject.IO_IN | gobject.IO_HUP,
2061
functools.partial(self.handle_ipc,
2062
parent_pipe =
2063
parent_pipe,
2064
proc = proc,
2065
client_object =
2066
client))
2775
2776
GLib.io_add_watch(
2777
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2778
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2779
functools.partial(self.handle_ipc,
2780
parent_pipe=parent_pipe,
2781
proc=proc,
2782
client_object=client))
2067
2783
parent_pipe.send(True)
2068
2784
# remove the old hook in favor of the new above hook on
2069
2785
# same fileno
2072
2788
funcname = request[1]
2073
2789
args = request[2]
2074
2790
kwargs = request[3]
2075
2791
2076
2792
parent_pipe.send(('data', getattr(client_object,
2077
2793
funcname)(*args,
2078
**kwargs)))
2079
2794
**kwargs)))
2795
2080
2796
if command == 'getattr':
2081
2797
attrname = request[1]
2082
if callable(client_object.__getattribute__(attrname)):
2083
parent_pipe.send(('function',))
2798
if isinstance(client_object.__getattribute__(attrname),
2799
collections.abc.Callable):
2800
parent_pipe.send(('function', ))
2084
2801
else:
2085
parent_pipe.send(('data', client_object
2086
.__getattribute__(attrname)))
2087
2802
parent_pipe.send((
2803
'data', client_object.__getattribute__(attrname)))
2804
2088
2805
if command == 'setattr':
2089
2806
attrname = request[1]
2090
2807
value = request[2]
2091
2808
setattr(client_object, attrname, value)
2092
2809
2093
2810
return True
2094
2811
2095
2812
2813
def rfc3339_duration_to_delta(duration):
2814
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2815
2816
>>> timedelta = datetime.timedelta
2817
>>> rfc3339_duration_to_delta("P7D") == timedelta(7)
2818
True
2819
>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)
2820
True
2821
>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)
2822
True
2823
>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)
2824
True
2825
>>> rfc3339_duration_to_delta("P1W") == timedelta(7)
2826
True
2827
>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)
2828
True
2829
>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)
2830
True
2831
>>> del timedelta
2832
"""
2833
2834
# Parsing an RFC 3339 duration with regular expressions is not
2835
# possible - there would have to be multiple places for the same
2836
# values, like seconds. The current code, while more esoteric, is
2837
# cleaner without depending on a parsing library. If Python had a
2838
# built-in library for parsing we would use it, but we'd like to
2839
# avoid excessive use of external libraries.
2840
2841
# New type for defining tokens, syntax, and semantics all-in-one
2842
Token = collections.namedtuple("Token", (
2843
"regexp", # To match token; if "value" is not None, must have
2844
# a "group" containing digits
2845
"value", # datetime.timedelta or None
2846
"followers")) # Tokens valid after this token
2847
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2848
# the "duration" ABNF definition in RFC 3339, Appendix A.
2849
token_end = Token(re.compile(r"$"), None, frozenset())
2850
token_second = Token(re.compile(r"(\d+)S"),
2851
datetime.timedelta(seconds=1),
2852
frozenset((token_end, )))
2853
token_minute = Token(re.compile(r"(\d+)M"),
2854
datetime.timedelta(minutes=1),
2855
frozenset((token_second, token_end)))
2856
token_hour = Token(re.compile(r"(\d+)H"),
2857
datetime.timedelta(hours=1),
2858
frozenset((token_minute, token_end)))
2859
token_time = Token(re.compile(r"T"),
2860
None,
2861
frozenset((token_hour, token_minute,
2862
token_second)))
2863
token_day = Token(re.compile(r"(\d+)D"),
2864
datetime.timedelta(days=1),
2865
frozenset((token_time, token_end)))
2866
token_month = Token(re.compile(r"(\d+)M"),
2867
datetime.timedelta(weeks=4),
2868
frozenset((token_day, token_end)))
2869
token_year = Token(re.compile(r"(\d+)Y"),
2870
datetime.timedelta(weeks=52),
2871
frozenset((token_month, token_end)))
2872
token_week = Token(re.compile(r"(\d+)W"),
2873
datetime.timedelta(weeks=1),
2874
frozenset((token_end, )))
2875
token_duration = Token(re.compile(r"P"), None,
2876
frozenset((token_year, token_month,
2877
token_day, token_time,
2878
token_week)))
2879
# Define starting values:
2880
# Value so far
2881
value = datetime.timedelta()
2882
found_token = None
2883
# Following valid tokens
2884
followers = frozenset((token_duration, ))
2885
# String left to parse
2886
s = duration
2887
# Loop until end token is found
2888
while found_token is not token_end:
2889
# Search for any currently valid tokens
2890
for token in followers:
2891
match = token.regexp.match(s)
2892
if match is not None:
2893
# Token found
2894
if token.value is not None:
2895
# Value found, parse digits
2896
factor = int(match.group(1), 10)
2897
# Add to value so far
2898
value += factor * token.value
2899
# Strip token from string
2900
s = token.regexp.sub("", s, 1)
2901
# Go to found token
2902
found_token = token
2903
# Set valid next tokens
2904
followers = found_token.followers
2905
break
2906
else:
2907
# No currently valid tokens were found
2908
raise ValueError("Invalid RFC 3339 duration: {!r}"
2909
.format(duration))
2910
# End token found
2911
return value
2912
2913
2096
2914
def string_to_delta(interval):
2097
2915
"""Parse a string and return a datetime.timedelta
2098
2099
>>> string_to_delta('7d')
2100
datetime.timedelta(7)
2101
>>> string_to_delta('60s')
2102
datetime.timedelta(0, 60)
2103
>>> string_to_delta('60m')
2104
datetime.timedelta(0, 3600)
2105
>>> string_to_delta('24h')
2106
datetime.timedelta(1)
2107
>>> string_to_delta('1w')
2108
datetime.timedelta(7)
2109
>>> string_to_delta('5m 30s')
2110
datetime.timedelta(0, 330)
2916
2917
>>> string_to_delta('7d') == datetime.timedelta(7)
2918
True
2919
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2920
True
2921
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2922
True
2923
>>> string_to_delta('24h') == datetime.timedelta(1)
2924
True
2925
>>> string_to_delta('1w') == datetime.timedelta(7)
2926
True
2927
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2928
True
2111
2929
"""
2930
2931
try:
2932
return rfc3339_duration_to_delta(interval)
2933
except ValueError:
2934
pass
2935
2112
2936
timevalue = datetime.timedelta(0)
2113
2937
for s in interval.split():
2114
2938
try:
2115
suffix = unicode(s[-1])
2939
suffix = s[-1]
2116
2940
value = int(s[:-1])
2117
2941
if suffix == "d":
2118
2942
delta = datetime.timedelta(value)
2125
2949
elif suffix == "w":
2126
2950
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2127
2951
else:
2128
raise ValueError("Unknown suffix {0!r}"
2129
.format(suffix))
2130
except (ValueError, IndexError) as e:
2952
raise ValueError("Unknown suffix {!r}".format(suffix))
2953
except IndexError as e:
2131
2954
raise ValueError(*(e.args))
2132
2955
timevalue += delta
2133
2956
return timevalue
2134
2957
2135
2958
2136
def daemon(nochdir = False, noclose = False):
2959
def daemon(nochdir=False, noclose=False):
2137
2960
"""See daemon(3). Standard BSD Unix function.
2138
2961
2139
2962
This should really exist as os.daemon, but it doesn't (yet)."""
2140
2963
if os.fork():
2141
2964
sys.exit()
2149
2972
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2150
2973
if not stat.S_ISCHR(os.fstat(null).st_mode):
2151
2974
raise OSError(errno.ENODEV,
2152
"{0} not a character device"
2975
"{} not a character device"
2153
2976
.format(os.devnull))
2154
2977
os.dup2(null, sys.stdin.fileno())
2155
2978
os.dup2(null, sys.stdout.fileno())
2159
2982
2160
2983
2161
2984
def main():
2162
2985
2163
2986
##################################################################
2164
2987
# Parsing of options, both command line and config file
2165
2988
2166
2989
parser = argparse.ArgumentParser()
2167
2990
parser.add_argument("-v", "--version", action="version",
2168
version = "%(prog)s {0}".format(version),
2991
version="%(prog)s {}".format(version),
2169
2992
help="show version number and exit")
2170
2993
parser.add_argument("-i", "--interface", metavar="IF",
2171
2994
help="Bind to interface IF")
2177
3000
help="Run self-test")
2178
3001
parser.add_argument("--debug", action="store_true",
2179
3002
help="Debug mode; run in foreground and log"
2180
" to terminal")
3003
" to terminal", default=None)
2181
3004
parser.add_argument("--debuglevel", metavar="LEVEL",
2182
3005
help="Debug level for stdout output")
2183
3006
parser.add_argument("--priority", help="GnuTLS"
2190
3013
" files")
2191
3014
parser.add_argument("--no-dbus", action="store_false",
2192
3015
dest="use_dbus", help="Do not provide D-Bus"
2193
" system bus interface")
3016
" system bus interface", default=None)
2194
3017
parser.add_argument("--no-ipv6", action="store_false",
2195
dest="use_ipv6", help="Do not use IPv6")
3018
dest="use_ipv6", help="Do not use IPv6",
3019
default=None)
2196
3020
parser.add_argument("--no-restore", action="store_false",
2197
3021
dest="restore", help="Do not restore stored"
2198
" state")
3022
" state", default=None)
2199
3023
parser.add_argument("--socket", type=int,
2200
3024
help="Specify a file descriptor to a network"
2201
3025
" socket to use instead of creating one")
2202
3026
parser.add_argument("--statedir", metavar="DIR",
2203
3027
help="Directory to save/restore state in")
2204
3028
parser.add_argument("--foreground", action="store_true",
3029
help="Run in foreground", default=None)
3030
parser.add_argument("--no-zeroconf", action="store_false",
3031
dest="zeroconf", help="Do not use Zeroconf",
3032
default=None)
3033
2205
3034
options = parser.parse_args()
2206
2207
if options.check:
2208
import doctest
2209
doctest.testmod()
2210
sys.exit()
2211
3035
2212
3036
# Default values for config file for server-global settings
2213
server_defaults = { "interface": "",
2214
"address": "",
2215
"port": "",
2216
"debug": "False",
2217
"priority":
2218
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2219
"servicename": "Mandos",
2220
"use_dbus": "True",
2221
"use_ipv6": "True",
2222
"debuglevel": "",
2223
"restore": "True",
2224
"socket": "",
2225
"statedir": "/var/lib/mandos"
2226
}
2227
3037
if gnutls.has_rawpk:
3038
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3039
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3040
else:
3041
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3042
":+SIGN-DSA-SHA256")
3043
server_defaults = {"interface": "",
3044
"address": "",
3045
"port": "",
3046
"debug": "False",
3047
"priority": priority,
3048
"servicename": "Mandos",
3049
"use_dbus": "True",
3050
"use_ipv6": "True",
3051
"debuglevel": "",
3052
"restore": "True",
3053
"socket": "",
3054
"statedir": "/var/lib/mandos",
3055
"foreground": "False",
3056
"zeroconf": "True",
3057
}
3058
del priority
3059
2228
3060
# Parse config file for server-global settings
2229
server_config = configparser.SafeConfigParser(server_defaults)
3061
server_config = configparser.ConfigParser(server_defaults)
2230
3062
del server_defaults
2231
server_config.read(os.path.join(options.configdir,
2232
"mandos.conf"))
2233
# Convert the SafeConfigParser object to a dict
3063
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3064
# Convert the ConfigParser object to a dict
2234
3065
server_settings = server_config.defaults()
2235
3066
# Use the appropriate methods on the non-string config options
2236
for option in ("debug", "use_dbus", "use_ipv6"):
3067
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3068
"foreground", "zeroconf"):
2237
3069
server_settings[option] = server_config.getboolean("DEFAULT",
2238
3070
option)
2239
3071
if server_settings["port"]:
2249
3081
server_settings["socket"] = os.dup(server_settings
2250
3082
["socket"])
2251
3083
del server_config
2252
3084
2253
3085
# Override the settings from the config file with command line
2254
3086
# options, if set.
2255
3087
for option in ("interface", "address", "port", "debug",
2256
"priority", "servicename", "configdir",
2257
"use_dbus", "use_ipv6", "debuglevel", "restore",
2258
"statedir", "socket"):
3088
"priority", "servicename", "configdir", "use_dbus",
3089
"use_ipv6", "debuglevel", "restore", "statedir",
3090
"socket", "foreground", "zeroconf"):
2259
3091
value = getattr(options, option)
2260
3092
if value is not None:
2261
3093
server_settings[option] = value
2262
3094
del options
2263
3095
# Force all strings to be unicode
2264
3096
for option in server_settings.keys():
2265
if type(server_settings[option]) is str:
2266
server_settings[option] = unicode(server_settings[option])
3097
if isinstance(server_settings[option], bytes):
3098
server_settings[option] = (server_settings[option]
3099
.decode("utf-8"))
3100
# Force all boolean options to be boolean
3101
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3102
"foreground", "zeroconf"):
3103
server_settings[option] = bool(server_settings[option])
3104
# Debug implies foreground
3105
if server_settings["debug"]:
3106
server_settings["foreground"] = True
2267
3107
# Now we have our good server settings in "server_settings"
2268
3108
2269
3109
##################################################################
2270
3110
3111
if (not server_settings["zeroconf"]
3112
and not (server_settings["port"]
3113
or server_settings["socket"] != "")):
3114
parser.error("Needs port or socket to work without Zeroconf")
3115
2271
3116
# For convenience
2272
3117
debug = server_settings["debug"]
2273
3118
debuglevel = server_settings["debuglevel"]
2275
3120
use_ipv6 = server_settings["use_ipv6"]
2276
3121
stored_state_path = os.path.join(server_settings["statedir"],
2277
3122
stored_state_file)
2278
3123
foreground = server_settings["foreground"]
3124
zeroconf = server_settings["zeroconf"]
3125
2279
3126
if debug:
2280
3127
initlogger(debug, logging.DEBUG)
2281
3128
else:
2284
3131
else:
2285
3132
level = getattr(logging, debuglevel.upper())
2286
3133
initlogger(debug, level)
2287
3134
2288
3135
if server_settings["servicename"] != "Mandos":
2289
syslogger.setFormatter(logging.Formatter
2290
('Mandos ({0}) [%(process)d]:'
2291
' %(levelname)s: %(message)s'
2292
.format(server_settings
2293
["servicename"])))
2294
3136
syslogger.setFormatter(
3137
logging.Formatter('Mandos ({}) [%(process)d]:'
3138
' %(levelname)s: %(message)s'.format(
3139
server_settings["servicename"])))
3140
2295
3141
# Parse config file with clients
2296
client_config = configparser.SafeConfigParser(Client
2297
.client_defaults)
3142
client_config = configparser.ConfigParser(Client.client_defaults)
2298
3143
client_config.read(os.path.join(server_settings["configdir"],
2299
3144
"clients.conf"))
2300
3145
2301
3146
global mandos_dbus_service
2302
3147
mandos_dbus_service = None
2303
2304
tcp_server = MandosServer((server_settings["address"],
2305
server_settings["port"]),
2306
ClientHandler,
2307
interface=(server_settings["interface"]
2308
or None),
2309
use_ipv6=use_ipv6,
2310
gnutls_priority=
2311
server_settings["priority"],
2312
use_dbus=use_dbus,
2313
socketfd=(server_settings["socket"]
2314
or None))
2315
if not debug:
2316
pidfilename = "/var/run/mandos.pid"
3148
3149
socketfd = None
3150
if server_settings["socket"] != "":
3151
socketfd = server_settings["socket"]
3152
tcp_server = MandosServer(
3153
(server_settings["address"], server_settings["port"]),
3154
ClientHandler,
3155
interface=(server_settings["interface"] or None),
3156
use_ipv6=use_ipv6,
3157
gnutls_priority=server_settings["priority"],
3158
use_dbus=use_dbus,
3159
socketfd=socketfd)
3160
if not foreground:
3161
pidfilename = "/run/mandos.pid"
3162
if not os.path.isdir("/run/."):
3163
pidfilename = "/var/run/mandos.pid"
3164
pidfile = None
2317
3165
try:
2318
pidfile = open(pidfilename, "w")
3166
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2319
3167
except IOError as e:
2320
3168
logger.error("Could not open file %r", pidfilename,
2321
3169
exc_info=e)
2322
2323
for name in ("_mandos", "mandos", "nobody"):
3170
3171
for name, group in (("_mandos", "_mandos"),
3172
("mandos", "mandos"),
3173
("nobody", "nogroup")):
2324
3174
try:
2325
3175
uid = pwd.getpwnam(name).pw_uid
2326
gid = pwd.getpwnam(name).pw_gid
3176
gid = pwd.getpwnam(group).pw_gid
2327
3177
break
2328
3178
except KeyError:
2329
3179
continue
2333
3183
try:
2334
3184
os.setgid(gid)
2335
3185
os.setuid(uid)
3186
if debug:
3187
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3188
gid))
2336
3189
except OSError as error:
3190
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3191
.format(uid, gid, os.strerror(error.errno)))
2337
3192
if error.errno != errno.EPERM:
2338
raise error
2339
3193
raise
3194
2340
3195
if debug:
2341
3196
# Enable all possible GnuTLS debugging
2342
3197
2343
3198
# "Use a log level over 10 to enable all debugging options."
2344
3199
# - GnuTLS manual
2345
gnutls.library.functions.gnutls_global_set_log_level(11)
2346
2347
@gnutls.library.types.gnutls_log_func
3200
gnutls.global_set_log_level(11)
3201
3202
@gnutls.log_func
2348
3203
def debug_gnutls(level, string):
2349
logger.debug("GnuTLS: %s", string[:-1])
2350
2351
(gnutls.library.functions
2352
.gnutls_global_set_log_function(debug_gnutls))
2353
3204
logger.debug("GnuTLS: %s",
3205
string[:-1].decode("utf-8",
3206
errors="replace"))
3207
3208
gnutls.global_set_log_function(debug_gnutls)
3209
2354
3210
# Redirect stdin so all checkers get /dev/null
2355
3211
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2356
3212
os.dup2(null, sys.stdin.fileno())
2357
3213
if null > 2:
2358
3214
os.close(null)
2359
3215
2360
3216
# Need to fork before connecting to D-Bus
2361
if not debug:
3217
if not foreground:
2362
3218
# Close all input and output, do double fork, etc.
2363
3219
daemon()
2364
2365
# multiprocessing will use threads, so before we use gobject we
2366
# need to inform gobject that threads will be used.
2367
gobject.threads_init()
2368
3220
3221
if gi.version_info < (3, 10, 2):
3222
# multiprocessing will use threads, so before we use GLib we
3223
# need to inform GLib that threads will be used.
3224
GLib.threads_init()
3225
2369
3226
global main_loop
2370
3227
# From the Avahi example code
2371
3228
DBusGMainLoop(set_as_default=True)
2372
main_loop = gobject.MainLoop()
3229
main_loop = GLib.MainLoop()
2373
3230
bus = dbus.SystemBus()
2374
3231
# End of Avahi example code
2375
3232
if use_dbus:
2376
3233
try:
2377
3234
bus_name = dbus.service.BusName("se.recompile.Mandos",
2378
bus, do_not_queue=True)
2379
old_bus_name = (dbus.service.BusName
2380
("se.bsnet.fukt.Mandos", bus,
2381
do_not_queue=True))
2382
except dbus.exceptions.NameExistsException as e:
3235
bus,
3236
do_not_queue=True)
3237
old_bus_name = dbus.service.BusName(
3238
"se.bsnet.fukt.Mandos", bus,
3239
do_not_queue=True)
3240
except dbus.exceptions.DBusException as e:
2383
3241
logger.error("Disabling D-Bus:", exc_info=e)
2384
3242
use_dbus = False
2385
3243
server_settings["use_dbus"] = False
2386
3244
tcp_server.use_dbus = False
2387
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2388
service = AvahiServiceToSyslog(name =
2389
server_settings["servicename"],
2390
servicetype = "_mandos._tcp",
2391
protocol = protocol, bus = bus)
2392
if server_settings["interface"]:
2393
service.interface = (if_nametoindex
2394
(str(server_settings["interface"])))
2395
3245
if zeroconf:
3246
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3247
service = AvahiServiceToSyslog(
3248
name=server_settings["servicename"],
3249
servicetype="_mandos._tcp",
3250
protocol=protocol,
3251
bus=bus)
3252
if server_settings["interface"]:
3253
service.interface = if_nametoindex(
3254
server_settings["interface"].encode("utf-8"))
3255
2396
3256
global multiprocessing_manager
2397
3257
multiprocessing_manager = multiprocessing.Manager()
2398
3258
2399
3259
client_class = Client
2400
3260
if use_dbus:
2401
client_class = functools.partial(ClientDBus, bus = bus)
2402
3261
client_class = functools.partial(ClientDBus, bus=bus)
3262
2403
3263
client_settings = Client.config_parser(client_config)
2404
3264
old_client_settings = {}
2405
3265
clients_data = {}
2406
3266
3267
# This is used to redirect stdout and stderr for checker processes
3268
global wnull
3269
wnull = open(os.devnull, "w") # A writable /dev/null
3270
# Only used if server is running in foreground but not in debug
3271
# mode
3272
if debug or not foreground:
3273
wnull.close()
3274
2407
3275
# Get client data and settings from last running state.
2408
3276
if server_settings["restore"]:
2409
3277
try:
2410
3278
with open(stored_state_path, "rb") as stored_state:
2411
clients_data, old_client_settings = (pickle.load
2412
(stored_state))
3279
if sys.version_info.major == 2:
3280
clients_data, old_client_settings = pickle.load(
3281
stored_state)
3282
else:
3283
bytes_clients_data, bytes_old_client_settings = (
3284
pickle.load(stored_state, encoding="bytes"))
3285
# Fix bytes to strings
3286
# clients_data
3287
# .keys()
3288
clients_data = {(key.decode("utf-8")
3289
if isinstance(key, bytes)
3290
else key): value
3291
for key, value in
3292
bytes_clients_data.items()}
3293
del bytes_clients_data
3294
for key in clients_data:
3295
value = {(k.decode("utf-8")
3296
if isinstance(k, bytes) else k): v
3297
for k, v in
3298
clients_data[key].items()}
3299
clients_data[key] = value
3300
# .client_structure
3301
value["client_structure"] = [
3302
(s.decode("utf-8")
3303
if isinstance(s, bytes)
3304
else s) for s in
3305
value["client_structure"]]
3306
# .name, .host, and .checker_command
3307
for k in ("name", "host", "checker_command"):
3308
if isinstance(value[k], bytes):
3309
value[k] = value[k].decode("utf-8")
3310
if "key_id" not in value:
3311
value["key_id"] = ""
3312
elif "fingerprint" not in value:
3313
value["fingerprint"] = ""
3314
# old_client_settings
3315
# .keys()
3316
old_client_settings = {
3317
(key.decode("utf-8")
3318
if isinstance(key, bytes)
3319
else key): value
3320
for key, value in
3321
bytes_old_client_settings.items()}
3322
del bytes_old_client_settings
3323
# .host and .checker_command
3324
for value in old_client_settings.values():
3325
for attribute in ("host", "checker_command"):
3326
if isinstance(value[attribute], bytes):
3327
value[attribute] = (value[attribute]
3328
.decode("utf-8"))
2413
3329
os.remove(stored_state_path)
2414
3330
except IOError as e:
2415
3331
if e.errno == errno.ENOENT:
2416
logger.warning("Could not load persistent state: {0}"
2417
.format(os.strerror(e.errno)))
3332
logger.warning("Could not load persistent state:"
3333
" {}".format(os.strerror(e.errno)))
2418
3334
else:
2419
3335
logger.critical("Could not load persistent state:",
2420
3336
exc_info=e)
2421
3337
raise
2422
3338
except EOFError as e:
2423
3339
logger.warning("Could not load persistent state: "
2424
"EOFError:", exc_info=e)
2425
3340
"EOFError:",
3341
exc_info=e)
3342
2426
3343
with PGPEngine() as pgp:
2427
for client_name, client in clients_data.iteritems():
3344
for client_name, client in clients_data.items():
3345
# Skip removed clients
3346
if client_name not in client_settings:
3347
continue
3348
2428
3349
# Decide which value to use after restoring saved state.
2429
3350
# We have three different values: Old config file,
2430
3351
# new config file, and saved state.
2435
3356
# For each value in new config, check if it
2436
3357
# differs from the old config value (Except for
2437
3358
# the "secret" attribute)
2438
if (name != "secret" and
2439
value != old_client_settings[client_name]
2440
[name]):
3359
if (name != "secret"
3360
and (value !=
3361
old_client_settings[client_name][name])):
2441
3362
client[name] = value
2442
3363
except KeyError:
2443
3364
pass
2444
3365
2445
3366
# Clients who has passed its expire date can still be
2446
# enabled if its last checker was successful. Clients
3367
# enabled if its last checker was successful. A Client
2447
3368
# whose checker succeeded before we stored its state is
2448
3369
# assumed to have successfully run all checkers during
2449
3370
# downtime.
2451
3372
if datetime.datetime.utcnow() >= client["expires"]:
2452
3373
if not client["last_checked_ok"]:
2453
3374
logger.warning(
2454
"disabling client {0} - Client never "
2455
"performed a successful checker"
2456
.format(client_name))
3375
"disabling client {} - Client never "
3376
"performed a successful checker".format(
3377
client_name))
2457
3378
client["enabled"] = False
2458
3379
elif client["last_checker_status"] != 0:
2459
3380
logger.warning(
2460
"disabling client {0} - Client "
2461
"last checker failed with error code {1}"
2462
.format(client_name,
2463
client["last_checker_status"]))
3381
"disabling client {} - Client last"
3382
" checker failed with error code"
3383
" {}".format(
3384
client_name,
3385
client["last_checker_status"]))
2464
3386
client["enabled"] = False
2465
3387
else:
2466
client["expires"] = (datetime.datetime
2467
.utcnow()
2468
+ client["timeout"])
3388
client["expires"] = (
3389
datetime.datetime.utcnow()
3390
+ client["timeout"])
2469
3391
logger.debug("Last checker succeeded,"
2470
" keeping {0} enabled"
2471
.format(client_name))
3392
" keeping {} enabled".format(
3393
client_name))
2472
3394
try:
2473
client["secret"] = (
2474
pgp.decrypt(client["encrypted_secret"],
2475
client_settings[client_name]
2476
["secret"]))
3395
client["secret"] = pgp.decrypt(
3396
client["encrypted_secret"],
3397
client_settings[client_name]["secret"])
2477
3398
except PGPError:
2478
3399
# If decryption fails, we use secret from new settings
2479
logger.debug("Failed to decrypt {0} old secret"
2480
.format(client_name))
2481
client["secret"] = (
2482
client_settings[client_name]["secret"])
2483
3400
logger.debug("Failed to decrypt {} old secret".format(
3401
client_name))
3402
client["secret"] = (client_settings[client_name]
3403
["secret"])
3404
2484
3405
# Add/remove clients based on new changes made to config
2485
3406
for client_name in (set(old_client_settings)
2486
3407
- set(client_settings)):
2488
3409
for client_name in (set(client_settings)
2489
3410
- set(old_client_settings)):
2490
3411
clients_data[client_name] = client_settings[client_name]
2491
3412
2492
3413
# Create all client objects
2493
for client_name, client in clients_data.iteritems():
3414
for client_name, client in clients_data.items():
2494
3415
tcp_server.clients[client_name] = client_class(
2495
name = client_name, settings = client)
2496
3416
name=client_name,
3417
settings=client,
3418
server_settings=server_settings)
3419
2497
3420
if not tcp_server.clients:
2498
3421
logger.warning("No clients defined")
2499
2500
if not debug:
2501
try:
2502
with pidfile:
2503
pid = os.getpid()
2504
pidfile.write(str(pid) + "\n".encode("utf-8"))
2505
del pidfile
2506
except IOError:
2507
logger.error("Could not write to file %r with PID %d",
2508
pidfilename, pid)
2509
except NameError:
2510
# "pidfile" was never created
2511
pass
3422
3423
if not foreground:
3424
if pidfile is not None:
3425
pid = os.getpid()
3426
try:
3427
with pidfile:
3428
print(pid, file=pidfile)
3429
except IOError:
3430
logger.error("Could not write to file %r with PID %d",
3431
pidfilename, pid)
3432
del pidfile
2512
3433
del pidfilename
2513
2514
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2515
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2516
3434
3435
for termsig in (signal.SIGHUP, signal.SIGTERM):
3436
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3437
lambda: main_loop.quit() and False)
3438
2517
3439
if use_dbus:
2518
@alternate_dbus_interfaces({"se.recompile.Mandos":
2519
"se.bsnet.fukt.Mandos"})
2520
class MandosDBusService(DBusObjectWithProperties):
3440
3441
@alternate_dbus_interfaces(
3442
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3443
class MandosDBusService(DBusObjectWithObjectManager):
2521
3444
"""A D-Bus proxy object"""
3445
2522
3446
def __init__(self):
2523
3447
dbus.service.Object.__init__(self, bus, "/")
3448
2524
3449
_interface = "se.recompile.Mandos"
2525
2526
@dbus_interface_annotations(_interface)
2527
def _foo(self):
2528
return { "org.freedesktop.DBus.Property"
2529
".EmitsChangedSignal":
2530
"false"}
2531
3450
2532
3451
@dbus.service.signal(_interface, signature="o")
2533
3452
def ClientAdded(self, objpath):
2534
3453
"D-Bus signal"
2535
3454
pass
2536
3455
2537
3456
@dbus.service.signal(_interface, signature="ss")
2538
def ClientNotFound(self, fingerprint, address):
3457
def ClientNotFound(self, key_id, address):
2539
3458
"D-Bus signal"
2540
3459
pass
2541
3460
3461
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3462
"true"})
2542
3463
@dbus.service.signal(_interface, signature="os")
2543
3464
def ClientRemoved(self, objpath, name):
2544
3465
"D-Bus signal"
2545
3466
pass
2546
3467
3468
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3469
"true"})
2547
3470
@dbus.service.method(_interface, out_signature="ao")
2548
3471
def GetAllClients(self):
2549
3472
"D-Bus method"
2550
return dbus.Array(c.dbus_object_path
2551
for c in
2552
tcp_server.clients.itervalues())
2553
3473
return dbus.Array(c.dbus_object_path for c in
3474
tcp_server.clients.values())
3475
3476
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3477
"true"})
2554
3478
@dbus.service.method(_interface,
2555
3479
out_signature="a{oa{sv}}")
2556
3480
def GetAllClientsWithProperties(self):
2557
3481
"D-Bus method"
2558
3482
return dbus.Dictionary(
2559
((c.dbus_object_path, c.GetAll(""))
2560
for c in tcp_server.clients.itervalues()),
3483
{c.dbus_object_path: c.GetAll(
3484
"se.recompile.Mandos.Client")
3485
for c in tcp_server.clients.values()},
2561
3486
signature="oa{sv}")
2562
3487
2563
3488
@dbus.service.method(_interface, in_signature="o")
2564
3489
def RemoveClient(self, object_path):
2565
3490
"D-Bus method"
2566
for c in tcp_server.clients.itervalues():
3491
for c in tcp_server.clients.values():
2567
3492
if c.dbus_object_path == object_path:
2568
3493
del tcp_server.clients[c.name]
2569
3494
c.remove_from_connection()
2570
# Don't signal anything except ClientRemoved
3495
# Don't signal the disabling
2571
3496
c.disable(quiet=True)
2572
# Emit D-Bus signal
2573
self.ClientRemoved(object_path, c.name)
3497
# Emit D-Bus signal for removal
3498
self.client_removed_signal(c)
2574
3499
return
2575
3500
raise KeyError(object_path)
2576
3501
2577
3502
del _interface
2578
3503
3504
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3505
out_signature="a{oa{sa{sv}}}")
3506
def GetManagedObjects(self):
3507
"""D-Bus method"""
3508
return dbus.Dictionary(
3509
{client.dbus_object_path:
3510
dbus.Dictionary(
3511
{interface: client.GetAll(interface)
3512
for interface in
3513
client._get_all_interface_names()})
3514
for client in tcp_server.clients.values()})
3515
3516
def client_added_signal(self, client):
3517
"""Send the new standard signal and the old signal"""
3518
if use_dbus:
3519
# New standard signal
3520
self.InterfacesAdded(
3521
client.dbus_object_path,
3522
dbus.Dictionary(
3523
{interface: client.GetAll(interface)
3524
for interface in
3525
client._get_all_interface_names()}))
3526
# Old signal
3527
self.ClientAdded(client.dbus_object_path)
3528
3529
def client_removed_signal(self, client):
3530
"""Send the new standard signal and the old signal"""
3531
if use_dbus:
3532
# New standard signal
3533
self.InterfacesRemoved(
3534
client.dbus_object_path,
3535
client._get_all_interface_names())
3536
# Old signal
3537
self.ClientRemoved(client.dbus_object_path,
3538
client.name)
3539
2579
3540
mandos_dbus_service = MandosDBusService()
2580
3541
3542
# Save modules to variables to exempt the modules from being
3543
# unloaded before the function registered with atexit() is run.
3544
mp = multiprocessing
3545
wn = wnull
3546
2581
3547
def cleanup():
2582
3548
"Cleanup function; run on exit"
2583
service.cleanup()
2584
2585
multiprocessing.active_children()
3549
if zeroconf:
3550
service.cleanup()
3551
3552
mp.active_children()
3553
wn.close()
2586
3554
if not (tcp_server.clients or client_settings):
2587
3555
return
2588
3556
2589
3557
# Store client before exiting. Secrets are encrypted with key
2590
3558
# based on what config file has. If config file is
2591
3559
# removed/edited, old secret will thus be unrecovable.
2592
3560
clients = {}
2593
3561
with PGPEngine() as pgp:
2594
for client in tcp_server.clients.itervalues():
3562
for client in tcp_server.clients.values():
2595
3563
key = client_settings[client.name]["secret"]
2596
3564
client.encrypted_secret = pgp.encrypt(client.secret,
2597
3565
key)
2598
3566
client_dict = {}
2599
3567
2600
3568
# A list of attributes that can not be pickled
2601
3569
# + secret.
2602
exclude = set(("bus", "changedstate", "secret",
2603
"checker"))
2604
for name, typ in (inspect.getmembers
2605
(dbus.service.Object)):
3570
exclude = {"bus", "changedstate", "secret",
3571
"checker", "server_settings"}
3572
for name, typ in inspect.getmembers(dbus.service
3573
.Object):
2606
3574
exclude.add(name)
2607
3575
2608
3576
client_dict["encrypted_secret"] = (client
2609
3577
.encrypted_secret)
2610
3578
for attr in client.client_structure:
2611
3579
if attr not in exclude:
2612
3580
client_dict[attr] = getattr(client, attr)
2613
3581
2614
3582
clients[client.name] = client_dict
2615
3583
del client_settings[client.name]["secret"]
2616
3584
2617
3585
try:
2618
with (tempfile.NamedTemporaryFile
2619
(mode='wb', suffix=".pickle", prefix='clients-',
2620
dir=os.path.dirname(stored_state_path),
2621
delete=False)) as stored_state:
2622
pickle.dump((clients, client_settings), stored_state)
2623
tempname=stored_state.name
3586
with tempfile.NamedTemporaryFile(
3587
mode='wb',
3588
suffix=".pickle",
3589
prefix='clients-',
3590
dir=os.path.dirname(stored_state_path),
3591
delete=False) as stored_state:
3592
pickle.dump((clients, client_settings), stored_state,
3593
protocol=2)
3594
tempname = stored_state.name
2624
3595
os.rename(tempname, stored_state_path)
2625
3596
except (IOError, OSError) as e:
2626
3597
if not debug:
2629
3600
except NameError:
2630
3601
pass
2631
3602
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2632
logger.warning("Could not save persistent state: {0}"
3603
logger.warning("Could not save persistent state: {}"
2633
3604
.format(os.strerror(e.errno)))
2634
3605
else:
2635
3606
logger.warning("Could not save persistent state:",
2636
3607
exc_info=e)
2637
raise e
2638
3608
raise
3609
2639
3610
# Delete all clients, and settings from config
2640
3611
while tcp_server.clients:
2641
3612
name, client = tcp_server.clients.popitem()
2642
3613
if use_dbus:
2643
3614
client.remove_from_connection()
2644
# Don't signal anything except ClientRemoved
3615
# Don't signal the disabling
2645
3616
client.disable(quiet=True)
3617
# Emit D-Bus signal for removal
2646
3618
if use_dbus:
2647
# Emit D-Bus signal
2648
mandos_dbus_service.ClientRemoved(client
2649
.dbus_object_path,
2650
client.name)
3619
mandos_dbus_service.client_removed_signal(client)
2651
3620
client_settings.clear()
2652
3621
2653
3622
atexit.register(cleanup)
2654
2655
for client in tcp_server.clients.itervalues():
3623
3624
for client in tcp_server.clients.values():
2656
3625
if use_dbus:
2657
# Emit D-Bus signal
2658
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3626
# Emit D-Bus signal for adding
3627
mandos_dbus_service.client_added_signal(client)
2659
3628
# Need to initiate checking of clients
2660
3629
if client.enabled:
2661
3630
client.init_checker()
2662
3631
2663
3632
tcp_server.enable()
2664
3633
tcp_server.server_activate()
2665
3634
2666
3635
# Find out what port we got
2667
service.port = tcp_server.socket.getsockname()[1]
3636
if zeroconf:
3637
service.port = tcp_server.socket.getsockname()[1]
2668
3638
if use_ipv6:
2669
3639
logger.info("Now listening on address %r, port %d,"
2670
3640
" flowinfo %d, scope_id %d",
2672
3642
else: # IPv4
2673
3643
logger.info("Now listening on address %r, port %d",
2674
3644
*tcp_server.socket.getsockname())
2675
2676
#service.interface = tcp_server.socket.getsockname()[3]
2677
3645
3646
# service.interface = tcp_server.socket.getsockname()[3]
3647
2678
3648
try:
2679
# From the Avahi example code
2680
try:
2681
service.activate()
2682
except dbus.exceptions.DBusException as error:
2683
logger.critical("D-Bus Exception", exc_info=error)
2684
cleanup()
2685
sys.exit(1)
2686
# End of Avahi example code
2687
2688
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2689
lambda *args, **kwargs:
2690
(tcp_server.handle_request
2691
(*args[2:], **kwargs) or True))
2692
3649
if zeroconf:
3650
# From the Avahi example code
3651
try:
3652
service.activate()
3653
except dbus.exceptions.DBusException as error:
3654
logger.critical("D-Bus Exception", exc_info=error)
3655
cleanup()
3656
sys.exit(1)
3657
# End of Avahi example code
3658
3659
GLib.io_add_watch(
3660
GLib.IOChannel.unix_new(tcp_server.fileno()),
3661
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3662
lambda *args, **kwargs: (tcp_server.handle_request
3663
(*args[2:], **kwargs) or True))
3664
2693
3665
logger.debug("Starting main loop")
2694
3666
main_loop.run()
2695
3667
except AvahiError as error:
2704
3676
# Must run before the D-Bus bus name gets deregistered
2705
3677
cleanup()
2706
3678
3679
3680
def should_only_run_tests():
3681
parser = argparse.ArgumentParser(add_help=False)
3682
parser.add_argument("--check", action='store_true')
3683
args, unknown_args = parser.parse_known_args()
3684
run_tests = args.check
3685
if run_tests:
3686
# Remove --check argument from sys.argv
3687
sys.argv[1:] = unknown_args
3688
return run_tests
3689
3690
# Add all tests from doctest strings
3691
def load_tests(loader, tests, none):
3692
import doctest
3693
tests.addTests(doctest.DocTestSuite())
3694
return tests
3695
2707
3696
if __name__ == '__main__':
2708
main()
3697
try:
3698
if should_only_run_tests():
3699
# Call using ./mandos --check [--verbose]
3700
unittest.main()
3701
else:
3702
main()
3703
finally:
3704
logging.shutdown()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0