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- Committer: Teddy Hogeborn
- Date: 2021-02-03 10:35:45 UTC
- mfrom: (237.4.136 release)
- Revision ID: teddy@recompile.se-20210203103545-fkhhqnfu4gxx4c1j
Merge from release branch
- 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 © 2008-2013 Teddy Hogeborn
15
# Copyright © 2008-2013 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
71
78
import collections
79
import codecs
80
import unittest
81
import random
82
import shlex
72
83
73
84
import dbus
74
85
import dbus.service
75
import gobject
76
import avahi
86
import gi
87
from gi.repository import GLib
77
88
from dbus.mainloop.glib import DBusGMainLoop
78
89
import ctypes
79
90
import ctypes.util
80
91
import xml.dom.minidom
81
92
import inspect
82
93
83
try:
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 = "1.6.2"
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
215
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
216
self.gpg = "gpg"
217
try:
218
output = subprocess.check_output(["gpgconf"])
219
for line in output.splitlines():
220
name, text, path = line.split(b":")
221
if name == b"gpg":
222
self.gpg = path
223
break
224
except OSError as e:
225
if e.errno != errno.ENOENT:
226
raise
143
227
self.gnupgargs = ['--batch',
144
'--home', self.tempdir,
228
'--homedir', self.tempdir,
145
229
'--force-mdc',
146
'--quiet',
147
'--no-use-agent']
148
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
149
235
def __enter__(self):
150
236
return self
151
237
152
238
def __exit__(self, exc_type, exc_value, traceback):
153
239
self._cleanup()
154
240
return False
155
241
156
242
def __del__(self):
157
243
self._cleanup()
158
244
159
245
def _cleanup(self):
160
246
if self.tempdir is not None:
161
247
# Delete contents of tempdir
162
248
for root, dirs, files in os.walk(self.tempdir,
163
topdown = False):
249
topdown=False):
164
250
for filename in files:
165
251
os.remove(os.path.join(root, filename))
166
252
for dirname in dirs:
168
254
# Remove tempdir
169
255
os.rmdir(self.tempdir)
170
256
self.tempdir = None
171
257
172
258
def password_encode(self, password):
173
259
# Passphrase can not be empty and can not contain newlines or
174
260
# NUL bytes. So we prefix it and hex encode it.
179
265
.replace(b"\n", b"\\n")
180
266
.replace(b"\0", b"\\x00"))
181
267
return encoded
182
268
183
269
def encrypt(self, data, password):
184
270
passphrase = self.password_encode(password)
185
with tempfile.NamedTemporaryFile(dir=self.tempdir
186
) as passfile:
271
with tempfile.NamedTemporaryFile(
272
dir=self.tempdir) as passfile:
187
273
passfile.write(passphrase)
188
274
passfile.flush()
189
proc = subprocess.Popen(['gpg', '--symmetric',
275
proc = subprocess.Popen([self.gpg, '--symmetric',
190
276
'--passphrase-file',
191
277
passfile.name]
192
278
+ self.gnupgargs,
193
stdin = subprocess.PIPE,
194
stdout = subprocess.PIPE,
195
stderr = subprocess.PIPE)
196
ciphertext, err = proc.communicate(input = data)
279
stdin=subprocess.PIPE,
280
stdout=subprocess.PIPE,
281
stderr=subprocess.PIPE)
282
ciphertext, err = proc.communicate(input=data)
197
283
if proc.returncode != 0:
198
284
raise PGPError(err)
199
285
return ciphertext
200
286
201
287
def decrypt(self, data, password):
202
288
passphrase = self.password_encode(password)
203
with tempfile.NamedTemporaryFile(dir = self.tempdir
204
) as passfile:
289
with tempfile.NamedTemporaryFile(
290
dir=self.tempdir) as passfile:
205
291
passfile.write(passphrase)
206
292
passfile.flush()
207
proc = subprocess.Popen(['gpg', '--decrypt',
293
proc = subprocess.Popen([self.gpg, '--decrypt',
208
294
'--passphrase-file',
209
295
passfile.name]
210
296
+ self.gnupgargs,
211
stdin = subprocess.PIPE,
212
stdout = subprocess.PIPE,
213
stderr = subprocess.PIPE)
214
decrypted_plaintext, err = proc.communicate(input
215
= data)
297
stdin=subprocess.PIPE,
298
stdout=subprocess.PIPE,
299
stderr=subprocess.PIPE)
300
decrypted_plaintext, err = proc.communicate(input=data)
216
301
if proc.returncode != 0:
217
302
raise PGPError(err)
218
303
return decrypted_plaintext
219
304
220
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
221
332
class AvahiError(Exception):
222
333
def __init__(self, value, *args, **kwargs):
223
334
self.value = value
224
super(AvahiError, self).__init__(value, *args, **kwargs)
225
def __unicode__(self):
226
return unicode(repr(self.value))
335
return super(AvahiError, self).__init__(value, *args,
336
**kwargs)
337
227
338
228
339
class AvahiServiceError(AvahiError):
229
340
pass
230
341
342
231
343
class AvahiGroupError(AvahiError):
232
344
pass
233
345
234
346
235
class AvahiService(object):
347
class AvahiService:
236
348
"""An Avahi (Zeroconf) service.
237
349
238
350
Attributes:
239
351
interface: integer; avahi.IF_UNSPEC or an interface index.
240
352
Used to optionally bind to the specified interface.
252
364
server: D-Bus Server
253
365
bus: dbus.SystemBus()
254
366
"""
255
256
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
257
servicetype = None, port = None, TXT = None,
258
domain = "", host = "", max_renames = 32768,
259
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):
260
379
self.interface = interface
261
380
self.name = name
262
381
self.type = servicetype
271
390
self.server = None
272
391
self.bus = bus
273
392
self.entry_group_state_changed_match = None
274
275
def rename(self):
393
394
def rename(self, remove=True):
276
395
"""Derived from the Avahi example code"""
277
396
if self.rename_count >= self.max_renames:
278
397
logger.critical("No suitable Zeroconf service name found"
279
398
" after %i retries, exiting.",
280
399
self.rename_count)
281
400
raise AvahiServiceError("Too many renames")
282
self.name = unicode(self.server
283
.GetAlternativeServiceName(self.name))
401
self.name = str(
402
self.server.GetAlternativeServiceName(self.name))
403
self.rename_count += 1
284
404
logger.info("Changing Zeroconf service name to %r ...",
285
405
self.name)
286
self.remove()
406
if remove:
407
self.remove()
287
408
try:
288
409
self.add()
289
410
except dbus.exceptions.DBusException as error:
290
logger.critical("D-Bus Exception", exc_info=error)
291
self.cleanup()
292
os._exit(1)
293
self.rename_count += 1
294
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
295
420
def remove(self):
296
421
"""Derived from the Avahi example code"""
297
422
if self.entry_group_state_changed_match is not None:
299
424
self.entry_group_state_changed_match = None
300
425
if self.group is not None:
301
426
self.group.Reset()
302
427
303
428
def add(self):
304
429
"""Derived from the Avahi example code"""
305
430
self.remove()
322
447
dbus.UInt16(self.port),
323
448
avahi.string_array_to_txt_array(self.TXT))
324
449
self.group.Commit()
325
450
326
451
def entry_group_state_changed(self, state, error):
327
452
"""Derived from the Avahi example code"""
328
453
logger.debug("Avahi entry group state change: %i", state)
329
454
330
455
if state == avahi.ENTRY_GROUP_ESTABLISHED:
331
456
logger.debug("Zeroconf service established.")
332
457
elif state == avahi.ENTRY_GROUP_COLLISION:
334
459
self.rename()
335
460
elif state == avahi.ENTRY_GROUP_FAILURE:
336
461
logger.critical("Avahi: Error in group state changed %s",
337
unicode(error))
338
raise AvahiGroupError("State changed: {0!s}"
339
.format(error))
340
462
str(error))
463
raise AvahiGroupError("State changed: {!s}".format(error))
464
341
465
def cleanup(self):
342
466
"""Derived from the Avahi example code"""
343
467
if self.group is not None:
348
472
pass
349
473
self.group = None
350
474
self.remove()
351
475
352
476
def server_state_changed(self, state, error=None):
353
477
"""Derived from the Avahi example code"""
354
478
logger.debug("Avahi server state change: %i", state)
355
bad_states = { avahi.SERVER_INVALID:
356
"Zeroconf server invalid",
357
avahi.SERVER_REGISTERING: None,
358
avahi.SERVER_COLLISION:
359
"Zeroconf server name collision",
360
avahi.SERVER_FAILURE:
361
"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
}
362
485
if state in bad_states:
363
486
if bad_states[state] is not None:
364
487
if error is None:
367
490
logger.error(bad_states[state] + ": %r", error)
368
491
self.cleanup()
369
492
elif state == avahi.SERVER_RUNNING:
370
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)
371
505
else:
372
506
if error is None:
373
507
logger.debug("Unknown state: %r", state)
374
508
else:
375
509
logger.debug("Unknown state: %r: %r", state, error)
376
510
377
511
def activate(self):
378
512
"""Derived from the Avahi example code"""
379
513
if self.server is None:
383
517
follow_name_owner_changes=True),
384
518
avahi.DBUS_INTERFACE_SERVER)
385
519
self.server.connect_to_signal("StateChanged",
386
self.server_state_changed)
520
self.server_state_changed)
387
521
self.server_state_changed(self.server.GetState())
388
522
389
523
390
524
class AvahiServiceToSyslog(AvahiService):
391
def rename(self):
525
def rename(self, *args, **kwargs):
392
526
"""Add the new name to the syslog messages"""
393
ret = AvahiService.rename(self)
394
syslogger.setFormatter(logging.Formatter
395
('Mandos ({0}) [%(process)d]:'
396
' %(levelname)s: %(message)s'
397
.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)))
398
532
return ret
399
533
400
534
401
def timedelta_to_milliseconds(td):
402
"Convert a datetime.timedelta() to milliseconds"
403
return ((td.days * 24 * 60 * 60 * 1000)
404
+ (td.seconds * 1000)
405
+ (td.microseconds // 1000))
406
407
408
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)
598
return super(gnutls.Error, self).__init__(
599
message, *args)
600
601
class CertificateSecurityError(Error):
602
pass
603
604
# Classes
605
class Credentials:
606
def __init__(self):
607
self._c_object = gnutls.certificate_credentials_t()
608
gnutls.certificate_allocate_credentials(
609
ctypes.byref(self._c_object))
610
self.type = gnutls.CRD_CERTIFICATE
611
612
def __del__(self):
613
gnutls.certificate_free_credentials(self._c_object)
614
615
class ClientSession:
616
def __init__(self, socket, credentials=None):
617
self._c_object = gnutls.session_t()
618
gnutls_flags = gnutls.CLIENT
619
if gnutls.check_version(b"3.5.6"):
620
gnutls_flags |= gnutls.NO_TICKETS
621
if gnutls.has_rawpk:
622
gnutls_flags |= gnutls.ENABLE_RAWPK
623
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
624
del gnutls_flags
625
gnutls.set_default_priority(self._c_object)
626
gnutls.transport_set_ptr(self._c_object, socket.fileno())
627
gnutls.handshake_set_private_extensions(self._c_object,
628
True)
629
self.socket = socket
630
if credentials is None:
631
credentials = gnutls.Credentials()
632
gnutls.credentials_set(self._c_object, credentials.type,
633
ctypes.cast(credentials._c_object,
634
ctypes.c_void_p))
635
self.credentials = credentials
636
637
def __del__(self):
638
gnutls.deinit(self._c_object)
639
640
def handshake(self):
641
return gnutls.handshake(self._c_object)
642
643
def send(self, data):
644
data = bytes(data)
645
data_len = len(data)
646
while data_len > 0:
647
data_len -= gnutls.record_send(self._c_object,
648
data[-data_len:],
649
data_len)
650
651
def bye(self):
652
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
653
654
# Error handling functions
655
def _error_code(result):
656
"""A function to raise exceptions on errors, suitable
657
for the 'restype' attribute on ctypes functions"""
658
if result >= 0:
659
return result
660
if result == gnutls.E_NO_CERTIFICATE_FOUND:
661
raise gnutls.CertificateSecurityError(code=result)
662
raise gnutls.Error(code=result)
663
664
def _retry_on_error(result, func, arguments):
665
"""A function to retry on some errors, suitable
666
for the 'errcheck' attribute on ctypes functions"""
667
while result < 0:
668
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
669
return _error_code(result)
670
result = func(*arguments)
671
return result
672
673
# Unless otherwise indicated, the function declarations below are
674
# all from the gnutls/gnutls.h C header file.
675
676
# Functions
677
priority_set_direct = _library.gnutls_priority_set_direct
678
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
679
ctypes.POINTER(ctypes.c_char_p)]
680
priority_set_direct.restype = _error_code
681
682
init = _library.gnutls_init
683
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
684
init.restype = _error_code
685
686
set_default_priority = _library.gnutls_set_default_priority
687
set_default_priority.argtypes = [session_t]
688
set_default_priority.restype = _error_code
689
690
record_send = _library.gnutls_record_send
691
record_send.argtypes = [session_t, ctypes.c_void_p,
692
ctypes.c_size_t]
693
record_send.restype = ctypes.c_ssize_t
694
record_send.errcheck = _retry_on_error
695
696
certificate_allocate_credentials = (
697
_library.gnutls_certificate_allocate_credentials)
698
certificate_allocate_credentials.argtypes = [
699
ctypes.POINTER(certificate_credentials_t)]
700
certificate_allocate_credentials.restype = _error_code
701
702
certificate_free_credentials = (
703
_library.gnutls_certificate_free_credentials)
704
certificate_free_credentials.argtypes = [
705
certificate_credentials_t]
706
certificate_free_credentials.restype = None
707
708
handshake_set_private_extensions = (
709
_library.gnutls_handshake_set_private_extensions)
710
handshake_set_private_extensions.argtypes = [session_t,
711
ctypes.c_int]
712
handshake_set_private_extensions.restype = None
713
714
credentials_set = _library.gnutls_credentials_set
715
credentials_set.argtypes = [session_t, credentials_type_t,
716
ctypes.c_void_p]
717
credentials_set.restype = _error_code
718
719
strerror = _library.gnutls_strerror
720
strerror.argtypes = [ctypes.c_int]
721
strerror.restype = ctypes.c_char_p
722
723
certificate_type_get = _library.gnutls_certificate_type_get
724
certificate_type_get.argtypes = [session_t]
725
certificate_type_get.restype = _error_code
726
727
certificate_get_peers = _library.gnutls_certificate_get_peers
728
certificate_get_peers.argtypes = [session_t,
729
ctypes.POINTER(ctypes.c_uint)]
730
certificate_get_peers.restype = ctypes.POINTER(datum_t)
731
732
global_set_log_level = _library.gnutls_global_set_log_level
733
global_set_log_level.argtypes = [ctypes.c_int]
734
global_set_log_level.restype = None
735
736
global_set_log_function = _library.gnutls_global_set_log_function
737
global_set_log_function.argtypes = [log_func]
738
global_set_log_function.restype = None
739
740
deinit = _library.gnutls_deinit
741
deinit.argtypes = [session_t]
742
deinit.restype = None
743
744
handshake = _library.gnutls_handshake
745
handshake.argtypes = [session_t]
746
handshake.restype = _error_code
747
handshake.errcheck = _retry_on_error
748
749
transport_set_ptr = _library.gnutls_transport_set_ptr
750
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
751
transport_set_ptr.restype = None
752
753
bye = _library.gnutls_bye
754
bye.argtypes = [session_t, close_request_t]
755
bye.restype = _error_code
756
bye.errcheck = _retry_on_error
757
758
check_version = _library.gnutls_check_version
759
check_version.argtypes = [ctypes.c_char_p]
760
check_version.restype = ctypes.c_char_p
761
762
_need_version = b"3.3.0"
763
if check_version(_need_version) is None:
764
raise self.Error("Needs GnuTLS {} or later"
765
.format(_need_version))
766
767
_tls_rawpk_version = b"3.6.6"
768
has_rawpk = bool(check_version(_tls_rawpk_version))
769
770
if has_rawpk:
771
# Types
772
class pubkey_st(ctypes.Structure):
773
_fields = []
774
pubkey_t = ctypes.POINTER(pubkey_st)
775
776
x509_crt_fmt_t = ctypes.c_int
777
778
# All the function declarations below are from
779
# gnutls/abstract.h
780
pubkey_init = _library.gnutls_pubkey_init
781
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
782
pubkey_init.restype = _error_code
783
784
pubkey_import = _library.gnutls_pubkey_import
785
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
786
x509_crt_fmt_t]
787
pubkey_import.restype = _error_code
788
789
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
790
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
791
ctypes.POINTER(ctypes.c_ubyte),
792
ctypes.POINTER(ctypes.c_size_t)]
793
pubkey_get_key_id.restype = _error_code
794
795
pubkey_deinit = _library.gnutls_pubkey_deinit
796
pubkey_deinit.argtypes = [pubkey_t]
797
pubkey_deinit.restype = None
798
else:
799
# All the function declarations below are from
800
# gnutls/openpgp.h
801
802
openpgp_crt_init = _library.gnutls_openpgp_crt_init
803
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
804
openpgp_crt_init.restype = _error_code
805
806
openpgp_crt_import = _library.gnutls_openpgp_crt_import
807
openpgp_crt_import.argtypes = [openpgp_crt_t,
808
ctypes.POINTER(datum_t),
809
openpgp_crt_fmt_t]
810
openpgp_crt_import.restype = _error_code
811
812
openpgp_crt_verify_self = \
813
_library.gnutls_openpgp_crt_verify_self
814
openpgp_crt_verify_self.argtypes = [
815
openpgp_crt_t,
816
ctypes.c_uint,
817
ctypes.POINTER(ctypes.c_uint),
818
]
819
openpgp_crt_verify_self.restype = _error_code
820
821
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
822
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
823
openpgp_crt_deinit.restype = None
824
825
openpgp_crt_get_fingerprint = (
826
_library.gnutls_openpgp_crt_get_fingerprint)
827
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
828
ctypes.c_void_p,
829
ctypes.POINTER(
830
ctypes.c_size_t)]
831
openpgp_crt_get_fingerprint.restype = _error_code
832
833
if check_version(b"3.6.4"):
834
certificate_type_get2 = _library.gnutls_certificate_type_get2
835
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
836
certificate_type_get2.restype = _error_code
837
838
# Remove non-public functions
839
del _error_code, _retry_on_error
840
841
842
def call_pipe(connection, # : multiprocessing.Connection
843
func, *args, **kwargs):
844
"""This function is meant to be called by multiprocessing.Process
845
846
This function runs func(*args, **kwargs), and writes the resulting
847
return value on the provided multiprocessing.Connection.
848
"""
849
connection.send(func(*args, **kwargs))
850
connection.close()
851
852
853
class Client:
409
854
"""A representation of a client host served by this server.
410
855
411
856
Attributes:
412
857
approved: bool(); 'None' if not yet approved/disapproved
413
858
approval_delay: datetime.timedelta(); Time to wait for approval
414
859
approval_duration: datetime.timedelta(); Duration of one approval
415
checker: subprocess.Popen(); a running checker process used
416
to see if the client lives.
417
'None' if no process is running.
418
checker_callback_tag: a gobject event source tag, or None
860
checker: multiprocessing.Process(); a running checker process used
861
to see if the client lives. 'None' if no process is
862
running.
863
checker_callback_tag: a GLib event source tag, or None
419
864
checker_command: string; External command which is run to check
420
865
if client lives. %() expansions are done at
421
866
runtime with vars(self) as dict, so that for
422
867
instance %(name)s can be used in the command.
423
checker_initiator_tag: a gobject event source tag, or None
868
checker_initiator_tag: a GLib event source tag, or None
424
869
created: datetime.datetime(); (UTC) object creation
425
870
client_structure: Object describing what attributes a client has
426
871
and is used for storing the client at exit
427
872
current_checker_command: string; current running checker_command
428
disable_initiator_tag: a gobject event source tag, or None
873
disable_initiator_tag: a GLib event source tag, or None
429
874
enabled: bool()
430
875
fingerprint: string (40 or 32 hexadecimal digits); used to
431
uniquely identify the client
876
uniquely identify an OpenPGP client
877
key_id: string (64 hexadecimal digits); used to uniquely identify
878
a client using raw public keys
432
879
host: string; available for use by the checker command
433
880
interval: datetime.timedelta(); How often to start a new checker
434
881
last_approval_request: datetime.datetime(); (UTC) or None
436
883
last_checker_status: integer between 0 and 255 reflecting exit
437
884
status of last checker. -1 reflects crashed
438
885
checker, -2 means no checker completed yet.
886
last_checker_signal: The signal which killed the last checker, if
887
last_checker_status is -1
439
888
last_enabled: datetime.datetime(); (UTC) or None
440
889
name: string; from the config file, used in log messages and
441
890
D-Bus identifiers
448
897
disabled, or None
449
898
server_settings: The server_settings dict from main()
450
899
"""
451
900
452
901
runtime_expansions = ("approval_delay", "approval_duration",
453
"created", "enabled", "expires",
902
"created", "enabled", "expires", "key_id",
454
903
"fingerprint", "host", "interval",
455
904
"last_approval_request", "last_checked_ok",
456
905
"last_enabled", "name", "timeout")
457
client_defaults = { "timeout": "PT5M",
458
"extended_timeout": "PT15M",
459
"interval": "PT2M",
460
"checker": "fping -q -- %%(host)s",
461
"host": "",
462
"approval_delay": "PT0S",
463
"approval_duration": "PT1S",
464
"approved_by_default": "True",
465
"enabled": "True",
466
}
467
468
def timeout_milliseconds(self):
469
"Return the 'timeout' attribute in milliseconds"
470
return timedelta_to_milliseconds(self.timeout)
471
472
def extended_timeout_milliseconds(self):
473
"Return the 'extended_timeout' attribute in milliseconds"
474
return timedelta_to_milliseconds(self.extended_timeout)
475
476
def interval_milliseconds(self):
477
"Return the 'interval' attribute in milliseconds"
478
return timedelta_to_milliseconds(self.interval)
479
480
def approval_delay_milliseconds(self):
481
return timedelta_to_milliseconds(self.approval_delay)
482
906
client_defaults = {
907
"timeout": "PT5M",
908
"extended_timeout": "PT15M",
909
"interval": "PT2M",
910
"checker": "fping -q -- %%(host)s",
911
"host": "",
912
"approval_delay": "PT0S",
913
"approval_duration": "PT1S",
914
"approved_by_default": "True",
915
"enabled": "True",
916
}
917
483
918
@staticmethod
484
919
def config_parser(config):
485
920
"""Construct a new dict of client settings of this form:
492
927
for client_name in config.sections():
493
928
section = dict(config.items(client_name))
494
929
client = settings[client_name] = {}
495
930
496
931
client["host"] = section["host"]
497
932
# Reformat values from string types to Python types
498
933
client["approved_by_default"] = config.getboolean(
499
934
client_name, "approved_by_default")
500
935
client["enabled"] = config.getboolean(client_name,
501
936
"enabled")
502
937
938
# Uppercase and remove spaces from key_id and fingerprint
939
# for later comparison purposes with return value from the
940
# key_id() and fingerprint() functions
941
client["key_id"] = (section.get("key_id", "").upper()
942
.replace(" ", ""))
503
943
client["fingerprint"] = (section["fingerprint"].upper()
504
944
.replace(" ", ""))
505
945
if "secret" in section:
506
client["secret"] = section["secret"].decode("base64")
946
client["secret"] = codecs.decode(section["secret"]
947
.encode("utf-8"),
948
"base64")
507
949
elif "secfile" in section:
508
950
with open(os.path.expanduser(os.path.expandvars
509
951
(section["secfile"])),
510
952
"rb") as secfile:
511
953
client["secret"] = secfile.read()
512
954
else:
513
raise TypeError("No secret or secfile for section {0}"
955
raise TypeError("No secret or secfile for section {}"
514
956
.format(section))
515
957
client["timeout"] = string_to_delta(section["timeout"])
516
958
client["extended_timeout"] = string_to_delta(
524
966
client["last_approval_request"] = None
525
967
client["last_checked_ok"] = None
526
968
client["last_checker_status"] = -2
527
969
528
970
return settings
529
530
def __init__(self, settings, name = None, server_settings=None):
971
972
def __init__(self, settings, name=None, server_settings=None):
531
973
self.name = name
532
974
if server_settings is None:
533
975
server_settings = {}
534
976
self.server_settings = server_settings
535
977
# adding all client settings
536
for setting, value in settings.iteritems():
978
for setting, value in settings.items():
537
979
setattr(self, setting, value)
538
980
539
981
if self.enabled:
540
982
if not hasattr(self, "last_enabled"):
541
983
self.last_enabled = datetime.datetime.utcnow()
545
987
else:
546
988
self.last_enabled = None
547
989
self.expires = None
548
990
549
991
logger.debug("Creating client %r", self.name)
550
# Uppercase and remove spaces from fingerprint for later
551
# comparison purposes with return value from the fingerprint()
552
# function
992
logger.debug(" Key ID: %s", self.key_id)
553
993
logger.debug(" Fingerprint: %s", self.fingerprint)
554
994
self.created = settings.get("created",
555
995
datetime.datetime.utcnow())
556
996
557
997
# attributes specific for this server instance
558
998
self.checker = None
559
999
self.checker_initiator_tag = None
562
1002
self.current_checker_command = None
563
1003
self.approved = None
564
1004
self.approvals_pending = 0
565
self.changedstate = (multiprocessing_manager
566
.Condition(multiprocessing_manager
567
.Lock()))
568
self.client_structure = [attr for attr in
569
self.__dict__.iterkeys()
1005
self.changedstate = multiprocessing_manager.Condition(
1006
multiprocessing_manager.Lock())
1007
self.client_structure = [attr
1008
for attr in self.__dict__.keys()
570
1009
if not attr.startswith("_")]
571
1010
self.client_structure.append("client_structure")
572
573
for name, t in inspect.getmembers(type(self),
574
lambda obj:
575
isinstance(obj,
576
property)):
1011
1012
for name, t in inspect.getmembers(
1013
type(self), lambda obj: isinstance(obj, property)):
577
1014
if not name.startswith("_"):
578
1015
self.client_structure.append(name)
579
1016
580
1017
# Send notice to process children that client state has changed
581
1018
def send_changedstate(self):
582
1019
with self.changedstate:
583
1020
self.changedstate.notify_all()
584
1021
585
1022
def enable(self):
586
1023
"""Start this client's checker and timeout hooks"""
587
1024
if getattr(self, "enabled", False):
592
1029
self.last_enabled = datetime.datetime.utcnow()
593
1030
self.init_checker()
594
1031
self.send_changedstate()
595
1032
596
1033
def disable(self, quiet=True):
597
1034
"""Disable this client."""
598
1035
if not getattr(self, "enabled", False):
600
1037
if not quiet:
601
1038
logger.info("Disabling client %s", self.name)
602
1039
if getattr(self, "disable_initiator_tag", None) is not None:
603
gobject.source_remove(self.disable_initiator_tag)
1040
GLib.source_remove(self.disable_initiator_tag)
604
1041
self.disable_initiator_tag = None
605
1042
self.expires = None
606
1043
if getattr(self, "checker_initiator_tag", None) is not None:
607
gobject.source_remove(self.checker_initiator_tag)
1044
GLib.source_remove(self.checker_initiator_tag)
608
1045
self.checker_initiator_tag = None
609
1046
self.stop_checker()
610
1047
self.enabled = False
611
1048
if not quiet:
612
1049
self.send_changedstate()
613
# Do not run this again if called by a gobject.timeout_add
1050
# Do not run this again if called by a GLib.timeout_add
614
1051
return False
615
1052
616
1053
def __del__(self):
617
1054
self.disable()
618
1055
619
1056
def init_checker(self):
620
1057
# Schedule a new checker to be started an 'interval' from now,
621
1058
# and every interval from then on.
622
1059
if self.checker_initiator_tag is not None:
623
gobject.source_remove(self.checker_initiator_tag)
624
self.checker_initiator_tag = (gobject.timeout_add
625
(self.interval_milliseconds(),
626
self.start_checker))
1060
GLib.source_remove(self.checker_initiator_tag)
1061
self.checker_initiator_tag = GLib.timeout_add(
1062
random.randrange(int(self.interval.total_seconds() * 1000
1063
+ 1)),
1064
self.start_checker)
627
1065
# Schedule a disable() when 'timeout' has passed
628
1066
if self.disable_initiator_tag is not None:
629
gobject.source_remove(self.disable_initiator_tag)
630
self.disable_initiator_tag = (gobject.timeout_add
631
(self.timeout_milliseconds(),
632
self.disable))
1067
GLib.source_remove(self.disable_initiator_tag)
1068
self.disable_initiator_tag = GLib.timeout_add(
1069
int(self.timeout.total_seconds() * 1000), self.disable)
633
1070
# Also start a new checker *right now*.
634
1071
self.start_checker()
635
636
def checker_callback(self, pid, condition, command):
1072
1073
def checker_callback(self, source, condition, connection,
1074
command):
637
1075
"""The checker has completed, so take appropriate actions."""
1076
# Read return code from connection (see call_pipe)
1077
returncode = connection.recv()
1078
connection.close()
1079
if self.checker is not None:
1080
self.checker.join()
638
1081
self.checker_callback_tag = None
639
1082
self.checker = None
640
if os.WIFEXITED(condition):
641
self.last_checker_status = os.WEXITSTATUS(condition)
1083
1084
if returncode >= 0:
1085
self.last_checker_status = returncode
1086
self.last_checker_signal = None
642
1087
if self.last_checker_status == 0:
643
1088
logger.info("Checker for %(name)s succeeded",
644
1089
vars(self))
645
1090
self.checked_ok()
646
1091
else:
647
logger.info("Checker for %(name)s failed",
648
vars(self))
1092
logger.info("Checker for %(name)s failed", vars(self))
649
1093
else:
650
1094
self.last_checker_status = -1
1095
self.last_checker_signal = -returncode
651
1096
logger.warning("Checker for %(name)s crashed?",
652
1097
vars(self))
653
1098
return False
1099
654
1100
def checked_ok(self):
655
1101
"""Assert that the client has been seen, alive and well."""
656
1102
self.last_checked_ok = datetime.datetime.utcnow()
657
1103
self.last_checker_status = 0
1104
self.last_checker_signal = None
658
1105
self.bump_timeout()
659
1106
660
1107
def bump_timeout(self, timeout=None):
661
1108
"""Bump up the timeout for this client."""
662
1109
if timeout is None:
663
1110
timeout = self.timeout
664
1111
if self.disable_initiator_tag is not None:
665
gobject.source_remove(self.disable_initiator_tag)
1112
GLib.source_remove(self.disable_initiator_tag)
666
1113
self.disable_initiator_tag = None
667
1114
if getattr(self, "enabled", False):
668
self.disable_initiator_tag = (gobject.timeout_add
669
(timedelta_to_milliseconds
670
(timeout), self.disable))
1115
self.disable_initiator_tag = GLib.timeout_add(
1116
int(timeout.total_seconds() * 1000), self.disable)
671
1117
self.expires = datetime.datetime.utcnow() + timeout
672
1118
673
1119
def need_approval(self):
674
1120
self.last_approval_request = datetime.datetime.utcnow()
675
1121
676
1122
def start_checker(self):
677
1123
"""Start a new checker subprocess if one is not running.
678
1124
679
1125
If a checker already exists, leave it running and do
680
1126
nothing."""
681
1127
# The reason for not killing a running checker is that if we
686
1132
# checkers alone, the checker would have to take more time
687
1133
# than 'timeout' for the client to be disabled, which is as it
688
1134
# should be.
689
690
# If a checker exists, make sure it is not a zombie
691
try:
692
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
693
except AttributeError:
694
pass
695
except OSError as error:
696
if error.errno != errno.ECHILD:
697
raise
698
else:
699
if pid:
700
logger.warning("Checker was a zombie")
701
gobject.source_remove(self.checker_callback_tag)
702
self.checker_callback(pid, status,
703
self.current_checker_command)
1135
1136
if self.checker is not None and not self.checker.is_alive():
1137
logger.warning("Checker was not alive; joining")
1138
self.checker.join()
1139
self.checker = None
704
1140
# Start a new checker if needed
705
1141
if self.checker is None:
706
1142
# Escape attributes for the shell
707
escaped_attrs = dict(
708
(attr, re.escape(unicode(getattr(self, attr))))
709
for attr in
710
self.runtime_expansions)
1143
escaped_attrs = {
1144
attr: shlex.quote(str(getattr(self, attr)))
1145
for attr in self.runtime_expansions}
711
1146
try:
712
1147
command = self.checker_command % escaped_attrs
713
1148
except TypeError as error:
714
1149
logger.error('Could not format string "%s"',
715
self.checker_command, exc_info=error)
716
return True # Try again later
1150
self.checker_command,
1151
exc_info=error)
1152
return True # Try again later
717
1153
self.current_checker_command = command
718
try:
719
logger.info("Starting checker %r for %s",
720
command, self.name)
721
# We don't need to redirect stdout and stderr, since
722
# in normal mode, that is already done by daemon(),
723
# and in debug mode we don't want to. (Stdin is
724
# always replaced by /dev/null.)
725
# The exception is when not debugging but nevertheless
726
# running in the foreground; use the previously
727
# created wnull.
728
popen_args = {}
729
if (not self.server_settings["debug"]
730
and self.server_settings["foreground"]):
731
popen_args.update({"stdout": wnull,
732
"stderr": wnull })
733
self.checker = subprocess.Popen(command,
734
close_fds=True,
735
shell=True, cwd="/",
736
**popen_args)
737
except OSError as error:
738
logger.error("Failed to start subprocess",
739
exc_info=error)
740
return True
741
self.checker_callback_tag = (gobject.child_watch_add
742
(self.checker.pid,
743
self.checker_callback,
744
data=command))
745
# The checker may have completed before the gobject
746
# watch was added. Check for this.
747
try:
748
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
749
except OSError as error:
750
if error.errno == errno.ECHILD:
751
# This should never happen
752
logger.error("Child process vanished",
753
exc_info=error)
754
return True
755
raise
756
if pid:
757
gobject.source_remove(self.checker_callback_tag)
758
self.checker_callback(pid, status, command)
759
# Re-run this periodically if run by gobject.timeout_add
1154
logger.info("Starting checker %r for %s", command,
1155
self.name)
1156
# We don't need to redirect stdout and stderr, since
1157
# in normal mode, that is already done by daemon(),
1158
# and in debug mode we don't want to. (Stdin is
1159
# always replaced by /dev/null.)
1160
# The exception is when not debugging but nevertheless
1161
# running in the foreground; use the previously
1162
# created wnull.
1163
popen_args = {"close_fds": True,
1164
"shell": True,
1165
"cwd": "/"}
1166
if (not self.server_settings["debug"]
1167
and self.server_settings["foreground"]):
1168
popen_args.update({"stdout": wnull,
1169
"stderr": wnull})
1170
pipe = multiprocessing.Pipe(duplex=False)
1171
self.checker = multiprocessing.Process(
1172
target=call_pipe,
1173
args=(pipe[1], subprocess.call, command),
1174
kwargs=popen_args)
1175
self.checker.start()
1176
self.checker_callback_tag = GLib.io_add_watch(
1177
GLib.IOChannel.unix_new(pipe[0].fileno()),
1178
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1179
self.checker_callback, pipe[0], command)
1180
# Re-run this periodically if run by GLib.timeout_add
760
1181
return True
761
1182
762
1183
def stop_checker(self):
763
1184
"""Force the checker process, if any, to stop."""
764
1185
if self.checker_callback_tag:
765
gobject.source_remove(self.checker_callback_tag)
1186
GLib.source_remove(self.checker_callback_tag)
766
1187
self.checker_callback_tag = None
767
1188
if getattr(self, "checker", None) is None:
768
1189
return
769
1190
logger.debug("Stopping checker for %(name)s", vars(self))
770
try:
771
self.checker.terminate()
772
#time.sleep(0.5)
773
#if self.checker.poll() is None:
774
# self.checker.kill()
775
except OSError as error:
776
if error.errno != errno.ESRCH: # No such process
777
raise
1191
self.checker.terminate()
778
1192
self.checker = None
779
1193
780
1194
781
def dbus_service_property(dbus_interface, signature="v",
782
access="readwrite", byte_arrays=False):
1195
def dbus_service_property(dbus_interface,
1196
signature="v",
1197
access="readwrite",
1198
byte_arrays=False):
783
1199
"""Decorators for marking methods of a DBusObjectWithProperties to
784
1200
become properties on the D-Bus.
785
1201
786
1202
The decorated method will be called with no arguments by "Get"
787
1203
and with one argument by "Set".
788
1204
789
1205
The parameters, where they are supported, are the same as
790
1206
dbus.service.method, except there is only "signature", since the
791
1207
type from Get() and the type sent to Set() is the same.
794
1210
# "Set" method, so we fail early here:
795
1211
if byte_arrays and signature != "ay":
796
1212
raise ValueError("Byte arrays not supported for non-'ay'"
797
" signature {0!r}".format(signature))
1213
" signature {!r}".format(signature))
1214
798
1215
def decorator(func):
799
1216
func._dbus_is_property = True
800
1217
func._dbus_interface = dbus_interface
803
1220
func._dbus_name = func.__name__
804
1221
if func._dbus_name.endswith("_dbus_property"):
805
1222
func._dbus_name = func._dbus_name[:-14]
806
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1223
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
807
1224
return func
1225
808
1226
return decorator
809
1227
810
1228
811
1229
def dbus_interface_annotations(dbus_interface):
812
1230
"""Decorator for marking functions returning interface annotations
813
1231
814
1232
Usage:
815
1233
816
1234
@dbus_interface_annotations("org.example.Interface")
817
1235
def _foo(self): # Function name does not matter
818
1236
return {"org.freedesktop.DBus.Deprecated": "true",
819
1237
"org.freedesktop.DBus.Property.EmitsChangedSignal":
820
1238
"false"}
821
1239
"""
1240
822
1241
def decorator(func):
823
1242
func._dbus_is_interface = True
824
1243
func._dbus_interface = dbus_interface
825
1244
func._dbus_name = dbus_interface
826
1245
return func
1246
827
1247
return decorator
828
1248
829
1249
830
1250
def dbus_annotations(annotations):
831
1251
"""Decorator to annotate D-Bus methods, signals or properties
832
1252
Usage:
833
1253
1254
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1255
"org.freedesktop.DBus.Property."
1256
"EmitsChangedSignal": "false"})
834
1257
@dbus_service_property("org.example.Interface", signature="b",
835
1258
access="r")
836
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
837
"org.freedesktop.DBus.Property."
838
"EmitsChangedSignal": "false"})
839
1259
def Property_dbus_property(self):
840
1260
return dbus.Boolean(False)
1261
1262
See also the DBusObjectWithAnnotations class.
841
1263
"""
1264
842
1265
def decorator(func):
843
1266
func._dbus_annotations = annotations
844
1267
return func
1268
845
1269
return decorator
846
1270
847
1271
848
1272
class DBusPropertyException(dbus.exceptions.DBusException):
849
1273
"""A base class for D-Bus property-related exceptions
850
1274
"""
851
def __unicode__(self):
852
return unicode(str(self))
1275
pass
853
1276
854
1277
855
1278
class DBusPropertyAccessException(DBusPropertyException):
864
1287
pass
865
1288
866
1289
867
class DBusObjectWithProperties(dbus.service.Object):
868
"""A D-Bus object with properties.
869
870
Classes inheriting from this can use the dbus_service_property
871
decorator to expose methods as D-Bus properties. It exposes the
872
standard Get(), Set(), and GetAll() methods on the D-Bus.
1290
class DBusObjectWithAnnotations(dbus.service.Object):
1291
"""A D-Bus object with annotations.
1292
1293
Classes inheriting from this can use the dbus_annotations
1294
decorator to add annotations to methods or signals.
873
1295
"""
874
1296
875
1297
@staticmethod
876
1298
def _is_dbus_thing(thing):
877
1299
"""Returns a function testing if an attribute is a D-Bus thing
878
1300
879
1301
If called like _is_dbus_thing("method") it returns a function
880
1302
suitable for use as predicate to inspect.getmembers().
881
1303
"""
882
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
1304
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
883
1305
False)
884
1306
885
1307
def _get_all_dbus_things(self, thing):
886
1308
"""Returns a generator of (name, attribute) pairs
887
1309
"""
888
return ((getattr(athing.__get__(self), "_dbus_name",
889
name),
1310
return ((getattr(athing.__get__(self), "_dbus_name", name),
890
1311
athing.__get__(self))
891
1312
for cls in self.__class__.__mro__
892
1313
for name, athing in
893
inspect.getmembers(cls,
894
self._is_dbus_thing(thing)))
895
1314
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1315
1316
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1317
out_signature="s",
1318
path_keyword='object_path',
1319
connection_keyword='connection')
1320
def Introspect(self, object_path, connection):
1321
"""Overloading of standard D-Bus method.
1322
1323
Inserts annotation tags on methods and signals.
1324
"""
1325
xmlstring = dbus.service.Object.Introspect(self, object_path,
1326
connection)
1327
try:
1328
document = xml.dom.minidom.parseString(xmlstring)
1329
1330
for if_tag in document.getElementsByTagName("interface"):
1331
# Add annotation tags
1332
for typ in ("method", "signal"):
1333
for tag in if_tag.getElementsByTagName(typ):
1334
annots = dict()
1335
for name, prop in (self.
1336
_get_all_dbus_things(typ)):
1337
if (name == tag.getAttribute("name")
1338
and prop._dbus_interface
1339
== if_tag.getAttribute("name")):
1340
annots.update(getattr(
1341
prop, "_dbus_annotations", {}))
1342
for name, value in annots.items():
1343
ann_tag = document.createElement(
1344
"annotation")
1345
ann_tag.setAttribute("name", name)
1346
ann_tag.setAttribute("value", value)
1347
tag.appendChild(ann_tag)
1348
# Add interface annotation tags
1349
for annotation, value in dict(
1350
itertools.chain.from_iterable(
1351
annotations().items()
1352
for name, annotations
1353
in self._get_all_dbus_things("interface")
1354
if name == if_tag.getAttribute("name")
1355
)).items():
1356
ann_tag = document.createElement("annotation")
1357
ann_tag.setAttribute("name", annotation)
1358
ann_tag.setAttribute("value", value)
1359
if_tag.appendChild(ann_tag)
1360
# Fix argument name for the Introspect method itself
1361
if (if_tag.getAttribute("name")
1362
== dbus.INTROSPECTABLE_IFACE):
1363
for cn in if_tag.getElementsByTagName("method"):
1364
if cn.getAttribute("name") == "Introspect":
1365
for arg in cn.getElementsByTagName("arg"):
1366
if (arg.getAttribute("direction")
1367
== "out"):
1368
arg.setAttribute("name",
1369
"xml_data")
1370
xmlstring = document.toxml("utf-8")
1371
document.unlink()
1372
except (AttributeError, xml.dom.DOMException,
1373
xml.parsers.expat.ExpatError) as error:
1374
logger.error("Failed to override Introspection method",
1375
exc_info=error)
1376
return xmlstring
1377
1378
1379
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1380
"""A D-Bus object with properties.
1381
1382
Classes inheriting from this can use the dbus_service_property
1383
decorator to expose methods as D-Bus properties. It exposes the
1384
standard Get(), Set(), and GetAll() methods on the D-Bus.
1385
"""
1386
896
1387
def _get_dbus_property(self, interface_name, property_name):
897
1388
"""Returns a bound method if one exists which is a D-Bus
898
1389
property with the specified name and interface.
899
1390
"""
900
for cls in self.__class__.__mro__:
901
for name, value in (inspect.getmembers
902
(cls,
903
self._is_dbus_thing("property"))):
1391
for cls in self.__class__.__mro__:
1392
for name, value in inspect.getmembers(
1393
cls, self._is_dbus_thing("property")):
904
1394
if (value._dbus_name == property_name
905
1395
and value._dbus_interface == interface_name):
906
1396
return value.__get__(self)
907
1397
908
1398
# No such property
909
raise DBusPropertyNotFound(self.dbus_object_path + ":"
910
+ interface_name + "."
911
+ property_name)
912
913
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1399
raise DBusPropertyNotFound("{}:{}.{}".format(
1400
self.dbus_object_path, interface_name, property_name))
1401
1402
@classmethod
1403
def _get_all_interface_names(cls):
1404
"""Get a sequence of all interfaces supported by an object"""
1405
return (name for name in set(getattr(getattr(x, attr),
1406
"_dbus_interface", None)
1407
for x in (inspect.getmro(cls))
1408
for attr in dir(x))
1409
if name is not None)
1410
1411
@dbus.service.method(dbus.PROPERTIES_IFACE,
1412
in_signature="ss",
914
1413
out_signature="v")
915
1414
def Get(self, interface_name, property_name):
916
1415
"""Standard D-Bus property Get() method, see D-Bus standard.
922
1421
if not hasattr(value, "variant_level"):
923
1422
return value
924
1423
return type(value)(value, variant_level=value.variant_level+1)
925
1424
926
1425
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
927
1426
def Set(self, interface_name, property_name, value):
928
1427
"""Standard D-Bus property Set() method, see D-Bus standard.
934
1433
# The byte_arrays option is not supported yet on
935
1434
# signatures other than "ay".
936
1435
if prop._dbus_signature != "ay":
937
raise ValueError
938
value = dbus.ByteArray(b''.join(chr(byte)
939
for byte in value))
1436
raise ValueError("Byte arrays not supported for non-"
1437
"'ay' signature {!r}"
1438
.format(prop._dbus_signature))
1439
value = dbus.ByteArray(bytes(value))
940
1440
prop(value)
941
942
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1441
1442
@dbus.service.method(dbus.PROPERTIES_IFACE,
1443
in_signature="s",
943
1444
out_signature="a{sv}")
944
1445
def GetAll(self, interface_name):
945
1446
"""Standard D-Bus property GetAll() method, see D-Bus
946
1447
standard.
947
1448
948
1449
Note: Will not include properties with access="write".
949
1450
"""
950
1451
properties = {}
960
1461
if not hasattr(value, "variant_level"):
961
1462
properties[name] = value
962
1463
continue
963
properties[name] = type(value)(value, variant_level=
964
value.variant_level+1)
1464
properties[name] = type(value)(
1465
value, variant_level=value.variant_level + 1)
965
1466
return dbus.Dictionary(properties, signature="sv")
966
1467
1468
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1469
def PropertiesChanged(self, interface_name, changed_properties,
1470
invalidated_properties):
1471
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1472
standard.
1473
"""
1474
pass
1475
967
1476
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
968
1477
out_signature="s",
969
1478
path_keyword='object_path',
970
1479
connection_keyword='connection')
971
1480
def Introspect(self, object_path, connection):
972
1481
"""Overloading of standard D-Bus method.
973
1482
974
1483
Inserts property tags and interface annotation tags.
975
1484
"""
976
xmlstring = dbus.service.Object.Introspect(self, object_path,
977
connection)
1485
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1486
object_path,
1487
connection)
978
1488
try:
979
1489
document = xml.dom.minidom.parseString(xmlstring)
1490
980
1491
def make_tag(document, name, prop):
981
1492
e = document.createElement("property")
982
1493
e.setAttribute("name", name)
983
1494
e.setAttribute("type", prop._dbus_signature)
984
1495
e.setAttribute("access", prop._dbus_access)
985
1496
return e
1497
986
1498
for if_tag in document.getElementsByTagName("interface"):
987
1499
# Add property tags
988
1500
for tag in (make_tag(document, name, prop)
991
1503
if prop._dbus_interface
992
1504
== if_tag.getAttribute("name")):
993
1505
if_tag.appendChild(tag)
994
# Add annotation tags
995
for typ in ("method", "signal", "property"):
996
for tag in if_tag.getElementsByTagName(typ):
997
annots = dict()
998
for name, prop in (self.
999
_get_all_dbus_things(typ)):
1000
if (name == tag.getAttribute("name")
1001
and prop._dbus_interface
1002
== if_tag.getAttribute("name")):
1003
annots.update(getattr
1004
(prop,
1005
"_dbus_annotations",
1006
{}))
1007
for name, value in annots.iteritems():
1008
ann_tag = document.createElement(
1009
"annotation")
1010
ann_tag.setAttribute("name", name)
1011
ann_tag.setAttribute("value", value)
1012
tag.appendChild(ann_tag)
1013
# Add interface annotation tags
1014
for annotation, value in dict(
1015
itertools.chain.from_iterable(
1016
annotations().iteritems()
1017
for name, annotations in
1018
self._get_all_dbus_things("interface")
1019
if name == if_tag.getAttribute("name")
1020
)).iteritems():
1021
ann_tag = document.createElement("annotation")
1022
ann_tag.setAttribute("name", annotation)
1023
ann_tag.setAttribute("value", value)
1024
if_tag.appendChild(ann_tag)
1506
# Add annotation tags for properties
1507
for tag in if_tag.getElementsByTagName("property"):
1508
annots = dict()
1509
for name, prop in self._get_all_dbus_things(
1510
"property"):
1511
if (name == tag.getAttribute("name")
1512
and prop._dbus_interface
1513
== if_tag.getAttribute("name")):
1514
annots.update(getattr(
1515
prop, "_dbus_annotations", {}))
1516
for name, value in annots.items():
1517
ann_tag = document.createElement(
1518
"annotation")
1519
ann_tag.setAttribute("name", name)
1520
ann_tag.setAttribute("value", value)
1521
tag.appendChild(ann_tag)
1025
1522
# Add the names to the return values for the
1026
1523
# "org.freedesktop.DBus.Properties" methods
1027
1524
if (if_tag.getAttribute("name")
1046
1543
return xmlstring
1047
1544
1048
1545
1546
try:
1547
dbus.OBJECT_MANAGER_IFACE
1548
except AttributeError:
1549
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1550
1551
1552
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1553
"""A D-Bus object with an ObjectManager.
1554
1555
Classes inheriting from this exposes the standard
1556
GetManagedObjects call and the InterfacesAdded and
1557
InterfacesRemoved signals on the standard
1558
"org.freedesktop.DBus.ObjectManager" interface.
1559
1560
Note: No signals are sent automatically; they must be sent
1561
manually.
1562
"""
1563
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1564
out_signature="a{oa{sa{sv}}}")
1565
def GetManagedObjects(self):
1566
"""This function must be overridden"""
1567
raise NotImplementedError()
1568
1569
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1570
signature="oa{sa{sv}}")
1571
def InterfacesAdded(self, object_path, interfaces_and_properties):
1572
pass
1573
1574
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1575
def InterfacesRemoved(self, object_path, interfaces):
1576
pass
1577
1578
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1579
out_signature="s",
1580
path_keyword='object_path',
1581
connection_keyword='connection')
1582
def Introspect(self, object_path, connection):
1583
"""Overloading of standard D-Bus method.
1584
1585
Override return argument name of GetManagedObjects to be
1586
"objpath_interfaces_and_properties"
1587
"""
1588
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1589
object_path,
1590
connection)
1591
try:
1592
document = xml.dom.minidom.parseString(xmlstring)
1593
1594
for if_tag in document.getElementsByTagName("interface"):
1595
# Fix argument name for the GetManagedObjects method
1596
if (if_tag.getAttribute("name")
1597
== dbus.OBJECT_MANAGER_IFACE):
1598
for cn in if_tag.getElementsByTagName("method"):
1599
if (cn.getAttribute("name")
1600
== "GetManagedObjects"):
1601
for arg in cn.getElementsByTagName("arg"):
1602
if (arg.getAttribute("direction")
1603
== "out"):
1604
arg.setAttribute(
1605
"name",
1606
"objpath_interfaces"
1607
"_and_properties")
1608
xmlstring = document.toxml("utf-8")
1609
document.unlink()
1610
except (AttributeError, xml.dom.DOMException,
1611
xml.parsers.expat.ExpatError) as error:
1612
logger.error("Failed to override Introspection method",
1613
exc_info=error)
1614
return xmlstring
1615
1616
1049
1617
def datetime_to_dbus(dt, variant_level=0):
1050
1618
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1051
1619
if dt is None:
1052
return dbus.String("", variant_level = variant_level)
1053
return dbus.String(dt.isoformat(),
1054
variant_level=variant_level)
1620
return dbus.String("", variant_level=variant_level)
1621
return dbus.String(dt.isoformat(), variant_level=variant_level)
1055
1622
1056
1623
1057
1624
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1059
1626
dbus.service.Object, it will add alternate D-Bus attributes with
1060
1627
interface names according to the "alt_interface_names" mapping.
1061
1628
Usage:
1062
1629
1063
1630
@alternate_dbus_interfaces({"org.example.Interface":
1064
1631
"net.example.AlternateInterface"})
1065
1632
class SampleDBusObject(dbus.service.Object):
1066
1633
@dbus.service.method("org.example.Interface")
1067
1634
def SampleDBusMethod():
1068
1635
pass
1069
1636
1070
1637
The above "SampleDBusMethod" on "SampleDBusObject" will be
1071
1638
reachable via two interfaces: "org.example.Interface" and
1072
1639
"net.example.AlternateInterface", the latter of which will have
1073
1640
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1074
1641
"true", unless "deprecate" is passed with a False value.
1075
1642
1076
1643
This works for methods and signals, and also for D-Bus properties
1077
1644
(from DBusObjectWithProperties) and interfaces (from the
1078
1645
dbus_interface_annotations decorator).
1079
1646
"""
1647
1080
1648
def wrapper(cls):
1081
1649
for orig_interface_name, alt_interface_name in (
1082
alt_interface_names.iteritems()):
1650
alt_interface_names.items()):
1083
1651
attr = {}
1084
1652
interface_names = set()
1085
1653
# Go though all attributes of the class
1087
1655
# Ignore non-D-Bus attributes, and D-Bus attributes
1088
1656
# with the wrong interface name
1089
1657
if (not hasattr(attribute, "_dbus_interface")
1090
or not attribute._dbus_interface
1091
.startswith(orig_interface_name)):
1658
or not attribute._dbus_interface.startswith(
1659
orig_interface_name)):
1092
1660
continue
1093
1661
# Create an alternate D-Bus interface name based on
1094
1662
# the current name
1095
alt_interface = (attribute._dbus_interface
1096
.replace(orig_interface_name,
1097
alt_interface_name))
1663
alt_interface = attribute._dbus_interface.replace(
1664
orig_interface_name, alt_interface_name)
1098
1665
interface_names.add(alt_interface)
1099
1666
# Is this a D-Bus signal?
1100
1667
if getattr(attribute, "_dbus_is_signal", False):
1101
1668
# Extract the original non-method undecorated
1102
1669
# function by black magic
1103
nonmethod_func = (dict(
1670
if sys.version_info.major == 2:
1671
nonmethod_func = (dict(
1104
1672
zip(attribute.func_code.co_freevars,
1105
attribute.__closure__))["func"]
1106
.cell_contents)
1673
attribute.__closure__))
1674
["func"].cell_contents)
1675
else:
1676
nonmethod_func = (dict(
1677
zip(attribute.__code__.co_freevars,
1678
attribute.__closure__))
1679
["func"].cell_contents)
1107
1680
# Create a new, but exactly alike, function
1108
1681
# object, and decorate it to be a new D-Bus signal
1109
1682
# with the alternate D-Bus interface name
1110
new_function = (dbus.service.signal
1111
(alt_interface,
1112
attribute._dbus_signature)
1113
(types.FunctionType(
1114
nonmethod_func.func_code,
1115
nonmethod_func.func_globals,
1116
nonmethod_func.func_name,
1117
nonmethod_func.func_defaults,
1118
nonmethod_func.func_closure)))
1683
new_function = copy_function(nonmethod_func)
1684
new_function = (dbus.service.signal(
1685
alt_interface,
1686
attribute._dbus_signature)(new_function))
1119
1687
# Copy annotations, if any
1120
1688
try:
1121
new_function._dbus_annotations = (
1122
dict(attribute._dbus_annotations))
1689
new_function._dbus_annotations = dict(
1690
attribute._dbus_annotations)
1123
1691
except AttributeError:
1124
1692
pass
1693
1125
1694
# Define a creator of a function to call both the
1126
1695
# original and alternate functions, so both the
1127
1696
# original and alternate signals gets sent when
1130
1699
"""This function is a scope container to pass
1131
1700
func1 and func2 to the "call_both" function
1132
1701
outside of its arguments"""
1702
1703
@functools.wraps(func2)
1133
1704
def call_both(*args, **kwargs):
1134
1705
"""This function will emit two D-Bus
1135
1706
signals by calling func1 and func2"""
1136
1707
func1(*args, **kwargs)
1137
1708
func2(*args, **kwargs)
1709
# Make wrapper function look like a D-Bus
1710
# signal
1711
for name, attr in inspect.getmembers(func2):
1712
if name.startswith("_dbus_"):
1713
setattr(call_both, name, attr)
1714
1138
1715
return call_both
1139
1716
# Create the "call_both" function and add it to
1140
1717
# the class
1145
1722
# object. Decorate it to be a new D-Bus method
1146
1723
# with the alternate D-Bus interface name. Add it
1147
1724
# to the class.
1148
attr[attrname] = (dbus.service.method
1149
(alt_interface,
1150
attribute._dbus_in_signature,
1151
attribute._dbus_out_signature)
1152
(types.FunctionType
1153
(attribute.func_code,
1154
attribute.func_globals,
1155
attribute.func_name,
1156
attribute.func_defaults,
1157
attribute.func_closure)))
1725
attr[attrname] = (
1726
dbus.service.method(
1727
alt_interface,
1728
attribute._dbus_in_signature,
1729
attribute._dbus_out_signature)
1730
(copy_function(attribute)))
1158
1731
# Copy annotations, if any
1159
1732
try:
1160
attr[attrname]._dbus_annotations = (
1161
dict(attribute._dbus_annotations))
1733
attr[attrname]._dbus_annotations = dict(
1734
attribute._dbus_annotations)
1162
1735
except AttributeError:
1163
1736
pass
1164
1737
# Is this a D-Bus property?
1167
1740
# object, and decorate it to be a new D-Bus
1168
1741
# property with the alternate D-Bus interface
1169
1742
# name. Add it to the class.
1170
attr[attrname] = (dbus_service_property
1171
(alt_interface,
1172
attribute._dbus_signature,
1173
attribute._dbus_access,
1174
attribute
1175
._dbus_get_args_options
1176
["byte_arrays"])
1177
(types.FunctionType
1178
(attribute.func_code,
1179
attribute.func_globals,
1180
attribute.func_name,
1181
attribute.func_defaults,
1182
attribute.func_closure)))
1743
attr[attrname] = (dbus_service_property(
1744
alt_interface, attribute._dbus_signature,
1745
attribute._dbus_access,
1746
attribute._dbus_get_args_options
1747
["byte_arrays"])
1748
(copy_function(attribute)))
1183
1749
# Copy annotations, if any
1184
1750
try:
1185
attr[attrname]._dbus_annotations = (
1186
dict(attribute._dbus_annotations))
1751
attr[attrname]._dbus_annotations = dict(
1752
attribute._dbus_annotations)
1187
1753
except AttributeError:
1188
1754
pass
1189
1755
# Is this a D-Bus interface?
1192
1758
# object. Decorate it to be a new D-Bus interface
1193
1759
# with the alternate D-Bus interface name. Add it
1194
1760
# to the class.
1195
attr[attrname] = (dbus_interface_annotations
1196
(alt_interface)
1197
(types.FunctionType
1198
(attribute.func_code,
1199
attribute.func_globals,
1200
attribute.func_name,
1201
attribute.func_defaults,
1202
attribute.func_closure)))
1761
attr[attrname] = (
1762
dbus_interface_annotations(alt_interface)
1763
(copy_function(attribute)))
1203
1764
if deprecate:
1204
1765
# Deprecate all alternate interfaces
1205
iname="_AlternateDBusNames_interface_annotation{0}"
1766
iname = "_AlternateDBusNames_interface_annotation{}"
1206
1767
for interface_name in interface_names:
1768
1207
1769
@dbus_interface_annotations(interface_name)
1208
1770
def func(self):
1209
return { "org.freedesktop.DBus.Deprecated":
1210
"true" }
1771
return {"org.freedesktop.DBus.Deprecated":
1772
"true"}
1211
1773
# Find an unused name
1212
1774
for aname in (iname.format(i)
1213
1775
for i in itertools.count()):
1217
1779
if interface_names:
1218
1780
# Replace the class with a new subclass of it with
1219
1781
# methods, signals, etc. as created above.
1220
cls = type(b"{0}Alternate".format(cls.__name__),
1221
(cls,), attr)
1782
if sys.version_info.major == 2:
1783
cls = type(b"{}Alternate".format(cls.__name__),
1784
(cls, ), attr)
1785
else:
1786
cls = type("{}Alternate".format(cls.__name__),
1787
(cls, ), attr)
1222
1788
return cls
1789
1223
1790
return wrapper
1224
1791
1225
1792
1226
1793
@alternate_dbus_interfaces({"se.recompile.Mandos":
1227
"se.bsnet.fukt.Mandos"})
1794
"se.bsnet.fukt.Mandos"})
1228
1795
class ClientDBus(Client, DBusObjectWithProperties):
1229
1796
"""A Client class using D-Bus
1230
1797
1231
1798
Attributes:
1232
1799
dbus_object_path: dbus.ObjectPath
1233
1800
bus: dbus.SystemBus()
1234
1801
"""
1235
1802
1236
1803
runtime_expansions = (Client.runtime_expansions
1237
+ ("dbus_object_path",))
1238
1804
+ ("dbus_object_path", ))
1805
1806
_interface = "se.recompile.Mandos.Client"
1807
1239
1808
# dbus.service.Object doesn't use super(), so we can't either.
1240
1241
def __init__(self, bus = None, *args, **kwargs):
1809
1810
def __init__(self, bus=None, *args, **kwargs):
1242
1811
self.bus = bus
1243
1812
Client.__init__(self, *args, **kwargs)
1244
1813
# Only now, when this client is initialized, can it show up on
1245
1814
# the D-Bus
1246
client_object_name = unicode(self.name).translate(
1815
client_object_name = str(self.name).translate(
1247
1816
{ord("."): ord("_"),
1248
1817
ord("-"): ord("_")})
1249
self.dbus_object_path = (dbus.ObjectPath
1250
("/clients/" + client_object_name))
1818
self.dbus_object_path = dbus.ObjectPath(
1819
"/clients/" + client_object_name)
1251
1820
DBusObjectWithProperties.__init__(self, self.bus,
1252
1821
self.dbus_object_path)
1253
1254
def notifychangeproperty(transform_func,
1255
dbus_name, type_func=lambda x: x,
1256
variant_level=1):
1822
1823
def notifychangeproperty(transform_func, dbus_name,
1824
type_func=lambda x: x,
1825
variant_level=1,
1826
invalidate_only=False,
1827
_interface=_interface):
1257
1828
""" Modify a variable so that it's a property which announces
1258
1829
its changes to DBus.
1259
1830
1260
1831
transform_fun: Function that takes a value and a variant_level
1261
1832
and transforms it to a D-Bus type.
1262
1833
dbus_name: D-Bus name of the variable
1264
1835
to the D-Bus. Default: no transform
1265
1836
variant_level: D-Bus variant level. Default: 1
1266
1837
"""
1267
attrname = "_{0}".format(dbus_name)
1838
attrname = "_{}".format(dbus_name)
1839
1268
1840
def setter(self, value):
1269
1841
if hasattr(self, "dbus_object_path"):
1270
1842
if (not hasattr(self, attrname) or
1271
1843
type_func(getattr(self, attrname, None))
1272
1844
!= type_func(value)):
1273
dbus_value = transform_func(type_func(value),
1274
variant_level
1275
=variant_level)
1276
self.PropertyChanged(dbus.String(dbus_name),
1277
dbus_value)
1845
if invalidate_only:
1846
self.PropertiesChanged(
1847
_interface, dbus.Dictionary(),
1848
dbus.Array((dbus_name, )))
1849
else:
1850
dbus_value = transform_func(
1851
type_func(value),
1852
variant_level=variant_level)
1853
self.PropertyChanged(dbus.String(dbus_name),
1854
dbus_value)
1855
self.PropertiesChanged(
1856
_interface,
1857
dbus.Dictionary({dbus.String(dbus_name):
1858
dbus_value}),
1859
dbus.Array())
1278
1860
setattr(self, attrname, value)
1279
1861
1280
1862
return property(lambda self: getattr(self, attrname), setter)
1281
1863
1282
1864
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1283
1865
approvals_pending = notifychangeproperty(dbus.Boolean,
1284
1866
"ApprovalPending",
1285
type_func = bool)
1867
type_func=bool)
1286
1868
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1287
1869
last_enabled = notifychangeproperty(datetime_to_dbus,
1288
1870
"LastEnabled")
1289
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1290
type_func = lambda checker:
1291
checker is not None)
1871
checker = notifychangeproperty(
1872
dbus.Boolean, "CheckerRunning",
1873
type_func=lambda checker: checker is not None)
1292
1874
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1293
1875
"LastCheckedOK")
1294
1876
last_checker_status = notifychangeproperty(dbus.Int16,
1297
1879
datetime_to_dbus, "LastApprovalRequest")
1298
1880
approved_by_default = notifychangeproperty(dbus.Boolean,
1299
1881
"ApprovedByDefault")
1300
approval_delay = notifychangeproperty(dbus.UInt64,
1301
"ApprovalDelay",
1302
type_func =
1303
timedelta_to_milliseconds)
1882
approval_delay = notifychangeproperty(
1883
dbus.UInt64, "ApprovalDelay",
1884
type_func=lambda td: td.total_seconds() * 1000)
1304
1885
approval_duration = notifychangeproperty(
1305
1886
dbus.UInt64, "ApprovalDuration",
1306
type_func = timedelta_to_milliseconds)
1887
type_func=lambda td: td.total_seconds() * 1000)
1307
1888
host = notifychangeproperty(dbus.String, "Host")
1308
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1309
type_func =
1310
timedelta_to_milliseconds)
1889
timeout = notifychangeproperty(
1890
dbus.UInt64, "Timeout",
1891
type_func=lambda td: td.total_seconds() * 1000)
1311
1892
extended_timeout = notifychangeproperty(
1312
1893
dbus.UInt64, "ExtendedTimeout",
1313
type_func = timedelta_to_milliseconds)
1314
interval = notifychangeproperty(dbus.UInt64,
1315
"Interval",
1316
type_func =
1317
timedelta_to_milliseconds)
1894
type_func=lambda td: td.total_seconds() * 1000)
1895
interval = notifychangeproperty(
1896
dbus.UInt64, "Interval",
1897
type_func=lambda td: td.total_seconds() * 1000)
1318
1898
checker_command = notifychangeproperty(dbus.String, "Checker")
1319
1899
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1900
invalidate_only=True)
1901
1320
1902
del notifychangeproperty
1321
1903
1322
1904
def __del__(self, *args, **kwargs):
1323
1905
try:
1324
1906
self.remove_from_connection()
1327
1909
if hasattr(DBusObjectWithProperties, "__del__"):
1328
1910
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1329
1911
Client.__del__(self, *args, **kwargs)
1330
1331
def checker_callback(self, pid, condition, command,
1332
*args, **kwargs):
1333
self.checker_callback_tag = None
1334
self.checker = None
1335
if os.WIFEXITED(condition):
1336
exitstatus = os.WEXITSTATUS(condition)
1912
1913
def checker_callback(self, source, condition,
1914
connection, command, *args, **kwargs):
1915
ret = Client.checker_callback(self, source, condition,
1916
connection, command, *args,
1917
**kwargs)
1918
exitstatus = self.last_checker_status
1919
if exitstatus >= 0:
1337
1920
# Emit D-Bus signal
1338
1921
self.CheckerCompleted(dbus.Int16(exitstatus),
1339
dbus.Int64(condition),
1922
# This is specific to GNU libC
1923
dbus.Int64(exitstatus << 8),
1340
1924
dbus.String(command))
1341
1925
else:
1342
1926
# Emit D-Bus signal
1343
1927
self.CheckerCompleted(dbus.Int16(-1),
1344
dbus.Int64(condition),
1928
dbus.Int64(
1929
# This is specific to GNU libC
1930
(exitstatus << 8)
1931
| self.last_checker_signal),
1345
1932
dbus.String(command))
1346
1347
return Client.checker_callback(self, pid, condition, command,
1348
*args, **kwargs)
1349
1933
return ret
1934
1350
1935
def start_checker(self, *args, **kwargs):
1351
old_checker = self.checker
1352
if self.checker is not None:
1353
old_checker_pid = self.checker.pid
1354
else:
1355
old_checker_pid = None
1936
old_checker_pid = getattr(self.checker, "pid", None)
1356
1937
r = Client.start_checker(self, *args, **kwargs)
1357
1938
# Only if new checker process was started
1358
1939
if (self.checker is not None
1360
1941
# Emit D-Bus signal
1361
1942
self.CheckerStarted(self.current_checker_command)
1362
1943
return r
1363
1944
1364
1945
def _reset_approved(self):
1365
1946
self.approved = None
1366
1947
return False
1367
1948
1368
1949
def approve(self, value=True):
1369
1950
self.approved = value
1370
gobject.timeout_add(timedelta_to_milliseconds
1371
(self.approval_duration),
1372
self._reset_approved)
1951
GLib.timeout_add(int(self.approval_duration.total_seconds()
1952
* 1000), self._reset_approved)
1373
1953
self.send_changedstate()
1374
1375
## D-Bus methods, signals & properties
1376
_interface = "se.recompile.Mandos.Client"
1377
1378
## Interfaces
1379
1380
@dbus_interface_annotations(_interface)
1381
def _foo(self):
1382
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1383
"false"}
1384
1385
## Signals
1386
1954
1955
# D-Bus methods, signals & properties
1956
1957
# Interfaces
1958
1959
# Signals
1960
1387
1961
# CheckerCompleted - signal
1388
1962
@dbus.service.signal(_interface, signature="nxs")
1389
1963
def CheckerCompleted(self, exitcode, waitstatus, command):
1390
1964
"D-Bus signal"
1391
1965
pass
1392
1966
1393
1967
# CheckerStarted - signal
1394
1968
@dbus.service.signal(_interface, signature="s")
1395
1969
def CheckerStarted(self, command):
1396
1970
"D-Bus signal"
1397
1971
pass
1398
1972
1399
1973
# PropertyChanged - signal
1974
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1400
1975
@dbus.service.signal(_interface, signature="sv")
1401
1976
def PropertyChanged(self, property, value):
1402
1977
"D-Bus signal"
1403
1978
pass
1404
1979
1405
1980
# GotSecret - signal
1406
1981
@dbus.service.signal(_interface)
1407
1982
def GotSecret(self):
1410
1985
server to mandos-client
1411
1986
"""
1412
1987
pass
1413
1988
1414
1989
# Rejected - signal
1415
1990
@dbus.service.signal(_interface, signature="s")
1416
1991
def Rejected(self, reason):
1417
1992
"D-Bus signal"
1418
1993
pass
1419
1994
1420
1995
# NeedApproval - signal
1421
1996
@dbus.service.signal(_interface, signature="tb")
1422
1997
def NeedApproval(self, timeout, default):
1423
1998
"D-Bus signal"
1424
1999
return self.need_approval()
1425
1426
## Methods
1427
2000
2001
# Methods
2002
1428
2003
# Approve - method
1429
2004
@dbus.service.method(_interface, in_signature="b")
1430
2005
def Approve(self, value):
1431
2006
self.approve(value)
1432
2007
1433
2008
# CheckedOK - method
1434
2009
@dbus.service.method(_interface)
1435
2010
def CheckedOK(self):
1436
2011
self.checked_ok()
1437
2012
1438
2013
# Enable - method
2014
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1439
2015
@dbus.service.method(_interface)
1440
2016
def Enable(self):
1441
2017
"D-Bus method"
1442
2018
self.enable()
1443
2019
1444
2020
# StartChecker - method
2021
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1445
2022
@dbus.service.method(_interface)
1446
2023
def StartChecker(self):
1447
2024
"D-Bus method"
1448
2025
self.start_checker()
1449
2026
1450
2027
# Disable - method
2028
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1451
2029
@dbus.service.method(_interface)
1452
2030
def Disable(self):
1453
2031
"D-Bus method"
1454
2032
self.disable()
1455
2033
1456
2034
# StopChecker - method
2035
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1457
2036
@dbus.service.method(_interface)
1458
2037
def StopChecker(self):
1459
2038
self.stop_checker()
1460
1461
## Properties
1462
2039
2040
# Properties
2041
1463
2042
# ApprovalPending - property
1464
2043
@dbus_service_property(_interface, signature="b", access="read")
1465
2044
def ApprovalPending_dbus_property(self):
1466
2045
return dbus.Boolean(bool(self.approvals_pending))
1467
2046
1468
2047
# ApprovedByDefault - property
1469
@dbus_service_property(_interface, signature="b",
2048
@dbus_service_property(_interface,
2049
signature="b",
1470
2050
access="readwrite")
1471
2051
def ApprovedByDefault_dbus_property(self, value=None):
1472
2052
if value is None: # get
1473
2053
return dbus.Boolean(self.approved_by_default)
1474
2054
self.approved_by_default = bool(value)
1475
2055
1476
2056
# ApprovalDelay - property
1477
@dbus_service_property(_interface, signature="t",
2057
@dbus_service_property(_interface,
2058
signature="t",
1478
2059
access="readwrite")
1479
2060
def ApprovalDelay_dbus_property(self, value=None):
1480
2061
if value is None: # get
1481
return dbus.UInt64(self.approval_delay_milliseconds())
2062
return dbus.UInt64(self.approval_delay.total_seconds()
2063
* 1000)
1482
2064
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1483
2065
1484
2066
# ApprovalDuration - property
1485
@dbus_service_property(_interface, signature="t",
2067
@dbus_service_property(_interface,
2068
signature="t",
1486
2069
access="readwrite")
1487
2070
def ApprovalDuration_dbus_property(self, value=None):
1488
2071
if value is None: # get
1489
return dbus.UInt64(timedelta_to_milliseconds(
1490
self.approval_duration))
2072
return dbus.UInt64(self.approval_duration.total_seconds()
2073
* 1000)
1491
2074
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1492
2075
1493
2076
# Name - property
2077
@dbus_annotations(
2078
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1494
2079
@dbus_service_property(_interface, signature="s", access="read")
1495
2080
def Name_dbus_property(self):
1496
2081
return dbus.String(self.name)
1497
2082
2083
# KeyID - property
2084
@dbus_annotations(
2085
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2086
@dbus_service_property(_interface, signature="s", access="read")
2087
def KeyID_dbus_property(self):
2088
return dbus.String(self.key_id)
2089
1498
2090
# Fingerprint - property
2091
@dbus_annotations(
2092
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1499
2093
@dbus_service_property(_interface, signature="s", access="read")
1500
2094
def Fingerprint_dbus_property(self):
1501
2095
return dbus.String(self.fingerprint)
1502
2096
1503
2097
# Host - property
1504
@dbus_service_property(_interface, signature="s",
2098
@dbus_service_property(_interface,
2099
signature="s",
1505
2100
access="readwrite")
1506
2101
def Host_dbus_property(self, value=None):
1507
2102
if value is None: # get
1508
2103
return dbus.String(self.host)
1509
self.host = unicode(value)
1510
2104
self.host = str(value)
2105
1511
2106
# Created - property
2107
@dbus_annotations(
2108
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1512
2109
@dbus_service_property(_interface, signature="s", access="read")
1513
2110
def Created_dbus_property(self):
1514
2111
return datetime_to_dbus(self.created)
1515
2112
1516
2113
# LastEnabled - property
1517
2114
@dbus_service_property(_interface, signature="s", access="read")
1518
2115
def LastEnabled_dbus_property(self):
1519
2116
return datetime_to_dbus(self.last_enabled)
1520
2117
1521
2118
# Enabled - property
1522
@dbus_service_property(_interface, signature="b",
2119
@dbus_service_property(_interface,
2120
signature="b",
1523
2121
access="readwrite")
1524
2122
def Enabled_dbus_property(self, value=None):
1525
2123
if value is None: # get
1528
2126
self.enable()
1529
2127
else:
1530
2128
self.disable()
1531
2129
1532
2130
# LastCheckedOK - property
1533
@dbus_service_property(_interface, signature="s",
2131
@dbus_service_property(_interface,
2132
signature="s",
1534
2133
access="readwrite")
1535
2134
def LastCheckedOK_dbus_property(self, value=None):
1536
2135
if value is not None:
1537
2136
self.checked_ok()
1538
2137
return
1539
2138
return datetime_to_dbus(self.last_checked_ok)
1540
2139
1541
2140
# LastCheckerStatus - property
1542
@dbus_service_property(_interface, signature="n",
1543
access="read")
2141
@dbus_service_property(_interface, signature="n", access="read")
1544
2142
def LastCheckerStatus_dbus_property(self):
1545
2143
return dbus.Int16(self.last_checker_status)
1546
2144
1547
2145
# Expires - property
1548
2146
@dbus_service_property(_interface, signature="s", access="read")
1549
2147
def Expires_dbus_property(self):
1550
2148
return datetime_to_dbus(self.expires)
1551
2149
1552
2150
# LastApprovalRequest - property
1553
2151
@dbus_service_property(_interface, signature="s", access="read")
1554
2152
def LastApprovalRequest_dbus_property(self):
1555
2153
return datetime_to_dbus(self.last_approval_request)
1556
2154
1557
2155
# Timeout - property
1558
@dbus_service_property(_interface, signature="t",
2156
@dbus_service_property(_interface,
2157
signature="t",
1559
2158
access="readwrite")
1560
2159
def Timeout_dbus_property(self, value=None):
1561
2160
if value is None: # get
1562
return dbus.UInt64(self.timeout_milliseconds())
2161
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1563
2162
old_timeout = self.timeout
1564
2163
self.timeout = datetime.timedelta(0, 0, 0, value)
1565
2164
# Reschedule disabling
1573
2172
if (getattr(self, "disable_initiator_tag", None)
1574
2173
is None):
1575
2174
return
1576
gobject.source_remove(self.disable_initiator_tag)
1577
self.disable_initiator_tag = (
1578
gobject.timeout_add(
1579
timedelta_to_milliseconds(self.expires - now),
1580
self.disable))
1581
2175
GLib.source_remove(self.disable_initiator_tag)
2176
self.disable_initiator_tag = GLib.timeout_add(
2177
int((self.expires - now).total_seconds() * 1000),
2178
self.disable)
2179
1582
2180
# ExtendedTimeout - property
1583
@dbus_service_property(_interface, signature="t",
2181
@dbus_service_property(_interface,
2182
signature="t",
1584
2183
access="readwrite")
1585
2184
def ExtendedTimeout_dbus_property(self, value=None):
1586
2185
if value is None: # get
1587
return dbus.UInt64(self.extended_timeout_milliseconds())
2186
return dbus.UInt64(self.extended_timeout.total_seconds()
2187
* 1000)
1588
2188
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1589
2189
1590
2190
# Interval - property
1591
@dbus_service_property(_interface, signature="t",
2191
@dbus_service_property(_interface,
2192
signature="t",
1592
2193
access="readwrite")
1593
2194
def Interval_dbus_property(self, value=None):
1594
2195
if value is None: # get
1595
return dbus.UInt64(self.interval_milliseconds())
2196
return dbus.UInt64(self.interval.total_seconds() * 1000)
1596
2197
self.interval = datetime.timedelta(0, 0, 0, value)
1597
2198
if getattr(self, "checker_initiator_tag", None) is None:
1598
2199
return
1599
2200
if self.enabled:
1600
2201
# Reschedule checker run
1601
gobject.source_remove(self.checker_initiator_tag)
1602
self.checker_initiator_tag = (gobject.timeout_add
1603
(value, self.start_checker))
1604
self.start_checker() # Start one now, too
1605
2202
GLib.source_remove(self.checker_initiator_tag)
2203
self.checker_initiator_tag = GLib.timeout_add(
2204
value, self.start_checker)
2205
self.start_checker() # Start one now, too
2206
1606
2207
# Checker - property
1607
@dbus_service_property(_interface, signature="s",
2208
@dbus_service_property(_interface,
2209
signature="s",
1608
2210
access="readwrite")
1609
2211
def Checker_dbus_property(self, value=None):
1610
2212
if value is None: # get
1611
2213
return dbus.String(self.checker_command)
1612
self.checker_command = unicode(value)
1613
2214
self.checker_command = str(value)
2215
1614
2216
# CheckerRunning - property
1615
@dbus_service_property(_interface, signature="b",
2217
@dbus_service_property(_interface,
2218
signature="b",
1616
2219
access="readwrite")
1617
2220
def CheckerRunning_dbus_property(self, value=None):
1618
2221
if value is None: # get
1621
2224
self.start_checker()
1622
2225
else:
1623
2226
self.stop_checker()
1624
2227
1625
2228
# ObjectPath - property
2229
@dbus_annotations(
2230
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2231
"org.freedesktop.DBus.Deprecated": "true"})
1626
2232
@dbus_service_property(_interface, signature="o", access="read")
1627
2233
def ObjectPath_dbus_property(self):
1628
return self.dbus_object_path # is already a dbus.ObjectPath
1629
2234
return self.dbus_object_path # is already a dbus.ObjectPath
2235
1630
2236
# Secret = property
1631
@dbus_service_property(_interface, signature="ay",
1632
access="write", byte_arrays=True)
2237
@dbus_annotations(
2238
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2239
"invalidates"})
2240
@dbus_service_property(_interface,
2241
signature="ay",
2242
access="write",
2243
byte_arrays=True)
1633
2244
def Secret_dbus_property(self, value):
1634
self.secret = str(value)
1635
2245
self.secret = bytes(value)
2246
1636
2247
del _interface
1637
2248
1638
2249
1639
class ProxyClient(object):
1640
def __init__(self, child_pipe, fpr, address):
2250
class ProxyClient:
2251
def __init__(self, child_pipe, key_id, fpr, address):
1641
2252
self._pipe = child_pipe
1642
self._pipe.send(('init', fpr, address))
2253
self._pipe.send(('init', key_id, fpr, address))
1643
2254
if not self._pipe.recv():
1644
raise KeyError()
1645
2255
raise KeyError(key_id or fpr)
2256
1646
2257
def __getattribute__(self, name):
1647
2258
if name == '_pipe':
1648
2259
return super(ProxyClient, self).__getattribute__(name)
1651
2262
if data[0] == 'data':
1652
2263
return data[1]
1653
2264
if data[0] == 'function':
2265
1654
2266
def func(*args, **kwargs):
1655
2267
self._pipe.send(('funcall', name, args, kwargs))
1656
2268
return self._pipe.recv()[1]
2269
1657
2270
return func
1658
2271
1659
2272
def __setattr__(self, name, value):
1660
2273
if name == '_pipe':
1661
2274
return super(ProxyClient, self).__setattr__(name, value)
1664
2277
1665
2278
class ClientHandler(socketserver.BaseRequestHandler, object):
1666
2279
"""A class to handle client connections.
1667
2280
1668
2281
Instantiated once for each connection to handle it.
1669
2282
Note: This will run in its own forked process."""
1670
2283
1671
2284
def handle(self):
1672
2285
with contextlib.closing(self.server.child_pipe) as child_pipe:
1673
2286
logger.info("TCP connection from: %s",
1674
unicode(self.client_address))
2287
str(self.client_address))
1675
2288
logger.debug("Pipe FD: %d",
1676
2289
self.server.child_pipe.fileno())
1677
1678
session = (gnutls.connection
1679
.ClientSession(self.request,
1680
gnutls.connection
1681
.X509Credentials()))
1682
1683
# Note: gnutls.connection.X509Credentials is really a
1684
# generic GnuTLS certificate credentials object so long as
1685
# no X.509 keys are added to it. Therefore, we can use it
1686
# here despite using OpenPGP certificates.
1687
1688
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1689
# "+AES-256-CBC", "+SHA1",
1690
# "+COMP-NULL", "+CTYPE-OPENPGP",
1691
# "+DHE-DSS"))
2290
2291
session = gnutls.ClientSession(self.request)
2292
2293
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2294
# "+AES-256-CBC", "+SHA1",
2295
# "+COMP-NULL", "+CTYPE-OPENPGP",
2296
# "+DHE-DSS"))
1692
2297
# Use a fallback default, since this MUST be set.
1693
2298
priority = self.server.gnutls_priority
1694
2299
if priority is None:
1695
2300
priority = "NORMAL"
1696
(gnutls.library.functions
1697
.gnutls_priority_set_direct(session._c_object,
1698
priority, None))
1699
2301
gnutls.priority_set_direct(session._c_object,
2302
priority.encode("utf-8"),
2303
None)
2304
1700
2305
# Start communication using the Mandos protocol
1701
2306
# Get protocol number
1702
2307
line = self.request.makefile().readline()
1707
2312
except (ValueError, IndexError, RuntimeError) as error:
1708
2313
logger.error("Unknown protocol version: %s", error)
1709
2314
return
1710
2315
1711
2316
# Start GnuTLS connection
1712
2317
try:
1713
2318
session.handshake()
1714
except gnutls.errors.GNUTLSError as error:
2319
except gnutls.Error as error:
1715
2320
logger.warning("Handshake failed: %s", error)
1716
2321
# Do not run session.bye() here: the session is not
1717
2322
# established. Just abandon the request.
1718
2323
return
1719
2324
logger.debug("Handshake succeeded")
1720
2325
1721
2326
approval_required = False
1722
2327
try:
1723
try:
1724
fpr = self.fingerprint(self.peer_certificate
1725
(session))
1726
except (TypeError,
1727
gnutls.errors.GNUTLSError) as error:
1728
logger.warning("Bad certificate: %s", error)
1729
return
1730
logger.debug("Fingerprint: %s", fpr)
1731
1732
try:
1733
client = ProxyClient(child_pipe, fpr,
2328
if gnutls.has_rawpk:
2329
fpr = b""
2330
try:
2331
key_id = self.key_id(
2332
self.peer_certificate(session))
2333
except (TypeError, gnutls.Error) as error:
2334
logger.warning("Bad certificate: %s", error)
2335
return
2336
logger.debug("Key ID: %s", key_id)
2337
2338
else:
2339
key_id = b""
2340
try:
2341
fpr = self.fingerprint(
2342
self.peer_certificate(session))
2343
except (TypeError, gnutls.Error) as error:
2344
logger.warning("Bad certificate: %s", error)
2345
return
2346
logger.debug("Fingerprint: %s", fpr)
2347
2348
try:
2349
client = ProxyClient(child_pipe, key_id, fpr,
1734
2350
self.client_address)
1735
2351
except KeyError:
1736
2352
return
1737
2353
1738
2354
if client.approval_delay:
1739
2355
delay = client.approval_delay
1740
2356
client.approvals_pending += 1
1741
2357
approval_required = True
1742
2358
1743
2359
while True:
1744
2360
if not client.enabled:
1745
2361
logger.info("Client %s is disabled",
1746
client.name)
2362
client.name)
1747
2363
if self.server.use_dbus:
1748
2364
# Emit D-Bus signal
1749
2365
client.Rejected("Disabled")
1750
2366
return
1751
2367
1752
2368
if client.approved or not client.approval_delay:
1753
#We are approved or approval is disabled
2369
# We are approved or approval is disabled
1754
2370
break
1755
2371
elif client.approved is None:
1756
2372
logger.info("Client %s needs approval",
1758
2374
if self.server.use_dbus:
1759
2375
# Emit D-Bus signal
1760
2376
client.NeedApproval(
1761
client.approval_delay_milliseconds(),
1762
client.approved_by_default)
2377
client.approval_delay.total_seconds()
2378
* 1000, client.approved_by_default)
1763
2379
else:
1764
2380
logger.warning("Client %s was not approved",
1765
2381
client.name)
1767
2383
# Emit D-Bus signal
1768
2384
client.Rejected("Denied")
1769
2385
return
1770
1771
#wait until timeout or approved
2386
2387
# wait until timeout or approved
1772
2388
time = datetime.datetime.now()
1773
2389
client.changedstate.acquire()
1774
client.changedstate.wait(
1775
float(timedelta_to_milliseconds(delay)
1776
/ 1000))
2390
client.changedstate.wait(delay.total_seconds())
1777
2391
client.changedstate.release()
1778
2392
time2 = datetime.datetime.now()
1779
2393
if (time2 - time) >= delay:
1789
2403
break
1790
2404
else:
1791
2405
delay -= time2 - time
1792
1793
sent_size = 0
1794
while sent_size < len(client.secret):
1795
try:
1796
sent = session.send(client.secret[sent_size:])
1797
except gnutls.errors.GNUTLSError as error:
1798
logger.warning("gnutls send failed",
1799
exc_info=error)
1800
return
1801
logger.debug("Sent: %d, remaining: %d",
1802
sent, len(client.secret)
1803
- (sent_size + sent))
1804
sent_size += sent
1805
2406
2407
try:
2408
session.send(client.secret)
2409
except gnutls.Error as error:
2410
logger.warning("gnutls send failed",
2411
exc_info=error)
2412
return
2413
1806
2414
logger.info("Sending secret to %s", client.name)
1807
2415
# bump the timeout using extended_timeout
1808
2416
client.bump_timeout(client.extended_timeout)
1809
2417
if self.server.use_dbus:
1810
2418
# Emit D-Bus signal
1811
2419
client.GotSecret()
1812
2420
1813
2421
finally:
1814
2422
if approval_required:
1815
2423
client.approvals_pending -= 1
1816
2424
try:
1817
2425
session.bye()
1818
except gnutls.errors.GNUTLSError as error:
2426
except gnutls.Error as error:
1819
2427
logger.warning("GnuTLS bye failed",
1820
2428
exc_info=error)
1821
2429
1822
2430
@staticmethod
1823
2431
def peer_certificate(session):
1824
"Return the peer's OpenPGP certificate as a bytestring"
1825
# If not an OpenPGP certificate...
1826
if (gnutls.library.functions
1827
.gnutls_certificate_type_get(session._c_object)
1828
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1829
# ...do the normal thing
1830
return session.peer_certificate
2432
"Return the peer's certificate as a bytestring"
2433
try:
2434
cert_type = gnutls.certificate_type_get2(session._c_object,
2435
gnutls.CTYPE_PEERS)
2436
except AttributeError:
2437
cert_type = gnutls.certificate_type_get(session._c_object)
2438
if gnutls.has_rawpk:
2439
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2440
else:
2441
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2442
# If not a valid certificate type...
2443
if cert_type not in valid_cert_types:
2444
logger.info("Cert type %r not in %r", cert_type,
2445
valid_cert_types)
2446
# ...return invalid data
2447
return b""
1831
2448
list_size = ctypes.c_uint(1)
1832
cert_list = (gnutls.library.functions
1833
.gnutls_certificate_get_peers
2449
cert_list = (gnutls.certificate_get_peers
1834
2450
(session._c_object, ctypes.byref(list_size)))
1835
2451
if not bool(cert_list) and list_size.value != 0:
1836
raise gnutls.errors.GNUTLSError("error getting peer"
1837
" certificate")
2452
raise gnutls.Error("error getting peer certificate")
1838
2453
if list_size.value == 0:
1839
2454
return None
1840
2455
cert = cert_list[0]
1841
2456
return ctypes.string_at(cert.data, cert.size)
1842
2457
2458
@staticmethod
2459
def key_id(certificate):
2460
"Convert a certificate bytestring to a hexdigit key ID"
2461
# New GnuTLS "datum" with the public key
2462
datum = gnutls.datum_t(
2463
ctypes.cast(ctypes.c_char_p(certificate),
2464
ctypes.POINTER(ctypes.c_ubyte)),
2465
ctypes.c_uint(len(certificate)))
2466
# XXX all these need to be created in the gnutls "module"
2467
# New empty GnuTLS certificate
2468
pubkey = gnutls.pubkey_t()
2469
gnutls.pubkey_init(ctypes.byref(pubkey))
2470
# Import the raw public key into the certificate
2471
gnutls.pubkey_import(pubkey,
2472
ctypes.byref(datum),
2473
gnutls.X509_FMT_DER)
2474
# New buffer for the key ID
2475
buf = ctypes.create_string_buffer(32)
2476
buf_len = ctypes.c_size_t(len(buf))
2477
# Get the key ID from the raw public key into the buffer
2478
gnutls.pubkey_get_key_id(
2479
pubkey,
2480
gnutls.KEYID_USE_SHA256,
2481
ctypes.cast(ctypes.byref(buf),
2482
ctypes.POINTER(ctypes.c_ubyte)),
2483
ctypes.byref(buf_len))
2484
# Deinit the certificate
2485
gnutls.pubkey_deinit(pubkey)
2486
2487
# Convert the buffer to a Python bytestring
2488
key_id = ctypes.string_at(buf, buf_len.value)
2489
# Convert the bytestring to hexadecimal notation
2490
hex_key_id = binascii.hexlify(key_id).upper()
2491
return hex_key_id
2492
1843
2493
@staticmethod
1844
2494
def fingerprint(openpgp):
1845
2495
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1846
2496
# New GnuTLS "datum" with the OpenPGP public key
1847
datum = (gnutls.library.types
1848
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1849
ctypes.POINTER
1850
(ctypes.c_ubyte)),
1851
ctypes.c_uint(len(openpgp))))
2497
datum = gnutls.datum_t(
2498
ctypes.cast(ctypes.c_char_p(openpgp),
2499
ctypes.POINTER(ctypes.c_ubyte)),
2500
ctypes.c_uint(len(openpgp)))
1852
2501
# New empty GnuTLS certificate
1853
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1854
(gnutls.library.functions
1855
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2502
crt = gnutls.openpgp_crt_t()
2503
gnutls.openpgp_crt_init(ctypes.byref(crt))
1856
2504
# Import the OpenPGP public key into the certificate
1857
(gnutls.library.functions
1858
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1859
gnutls.library.constants
1860
.GNUTLS_OPENPGP_FMT_RAW))
2505
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2506
gnutls.OPENPGP_FMT_RAW)
1861
2507
# Verify the self signature in the key
1862
2508
crtverify = ctypes.c_uint()
1863
(gnutls.library.functions
1864
.gnutls_openpgp_crt_verify_self(crt, 0,
1865
ctypes.byref(crtverify)))
2509
gnutls.openpgp_crt_verify_self(crt, 0,
2510
ctypes.byref(crtverify))
1866
2511
if crtverify.value != 0:
1867
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1868
raise (gnutls.errors.CertificateSecurityError
1869
("Verify failed"))
2512
gnutls.openpgp_crt_deinit(crt)
2513
raise gnutls.CertificateSecurityError(code
2514
=crtverify.value)
1870
2515
# New buffer for the fingerprint
1871
2516
buf = ctypes.create_string_buffer(20)
1872
2517
buf_len = ctypes.c_size_t()
1873
2518
# Get the fingerprint from the certificate into the buffer
1874
(gnutls.library.functions
1875
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1876
ctypes.byref(buf_len)))
2519
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2520
ctypes.byref(buf_len))
1877
2521
# Deinit the certificate
1878
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2522
gnutls.openpgp_crt_deinit(crt)
1879
2523
# Convert the buffer to a Python bytestring
1880
2524
fpr = ctypes.string_at(buf, buf_len.value)
1881
2525
# Convert the bytestring to hexadecimal notation
1883
2527
return hex_fpr
1884
2528
1885
2529
1886
class MultiprocessingMixIn(object):
2530
class MultiprocessingMixIn:
1887
2531
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2532
1888
2533
def sub_process_main(self, request, address):
1889
2534
try:
1890
2535
self.finish_request(request, address)
1891
2536
except Exception:
1892
2537
self.handle_error(request, address)
1893
2538
self.close_request(request)
1894
2539
1895
2540
def process_request(self, request, address):
1896
2541
"""Start a new process to process the request."""
1897
proc = multiprocessing.Process(target = self.sub_process_main,
1898
args = (request, address))
2542
proc = multiprocessing.Process(target=self.sub_process_main,
2543
args=(request, address))
1899
2544
proc.start()
1900
2545
return proc
1901
2546
1902
2547
1903
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2548
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1904
2549
""" adds a pipe to the MixIn """
2550
1905
2551
def process_request(self, request, client_address):
1906
2552
"""Overrides and wraps the original process_request().
1907
2553
1908
2554
This function creates a new pipe in self.pipe
1909
2555
"""
1910
2556
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1911
2557
1912
2558
proc = MultiprocessingMixIn.process_request(self, request,
1913
2559
client_address)
1914
2560
self.child_pipe.close()
1915
2561
self.add_pipe(parent_pipe, proc)
1916
2562
1917
2563
def add_pipe(self, parent_pipe, proc):
1918
2564
"""Dummy function; override as necessary"""
1919
2565
raise NotImplementedError()
1920
2566
1921
2567
1922
2568
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1923
socketserver.TCPServer, object):
2569
socketserver.TCPServer):
1924
2570
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1925
2571
1926
2572
Attributes:
1927
2573
enabled: Boolean; whether this server is activated yet
1928
2574
interface: None or a network interface name (string)
1929
2575
use_ipv6: Boolean; to use IPv6 or not
1930
2576
"""
2577
1931
2578
def __init__(self, server_address, RequestHandlerClass,
1932
interface=None, use_ipv6=True, socketfd=None):
2579
interface=None,
2580
use_ipv6=True,
2581
socketfd=None):
1933
2582
"""If socketfd is set, use that file descriptor instead of
1934
2583
creating a new one with socket.socket().
1935
2584
"""
1941
2590
self.socketfd = socketfd
1942
2591
# Save the original socket.socket() function
1943
2592
self.socket_socket = socket.socket
2593
1944
2594
# To implement --socket, we monkey patch socket.socket.
1945
#
2595
#
1946
2596
# (When socketserver.TCPServer is a new-style class, we
1947
2597
# could make self.socket into a property instead of monkey
1948
2598
# patching socket.socket.)
1949
#
2599
#
1950
2600
# Create a one-time-only replacement for socket.socket()
1951
2601
@functools.wraps(socket.socket)
1952
2602
def socket_wrapper(*args, **kwargs):
1964
2614
# socket_wrapper(), if socketfd was set.
1965
2615
socketserver.TCPServer.__init__(self, server_address,
1966
2616
RequestHandlerClass)
1967
2617
1968
2618
def server_bind(self):
1969
2619
"""This overrides the normal server_bind() function
1970
2620
to bind to an interface if one was specified, and also NOT to
1971
2621
bind to an address or port if they were not specified."""
2622
global SO_BINDTODEVICE
1972
2623
if self.interface is not None:
1973
2624
if SO_BINDTODEVICE is None:
1974
logger.error("SO_BINDTODEVICE does not exist;"
1975
" cannot bind to interface %s",
1976
self.interface)
1977
else:
1978
try:
1979
self.socket.setsockopt(socket.SOL_SOCKET,
1980
SO_BINDTODEVICE,
1981
str(self.interface + '\0'))
1982
except socket.error as error:
1983
if error.errno == errno.EPERM:
1984
logger.error("No permission to bind to"
1985
" interface %s", self.interface)
1986
elif error.errno == errno.ENOPROTOOPT:
1987
logger.error("SO_BINDTODEVICE not available;"
1988
" cannot bind to interface %s",
1989
self.interface)
1990
elif error.errno == errno.ENODEV:
1991
logger.error("Interface %s does not exist,"
1992
" cannot bind", self.interface)
1993
else:
1994
raise
2625
# Fall back to a hard-coded value which seems to be
2626
# common enough.
2627
logger.warning("SO_BINDTODEVICE not found, trying 25")
2628
SO_BINDTODEVICE = 25
2629
try:
2630
self.socket.setsockopt(
2631
socket.SOL_SOCKET, SO_BINDTODEVICE,
2632
(self.interface + "\0").encode("utf-8"))
2633
except socket.error as error:
2634
if error.errno == errno.EPERM:
2635
logger.error("No permission to bind to"
2636
" interface %s", self.interface)
2637
elif error.errno == errno.ENOPROTOOPT:
2638
logger.error("SO_BINDTODEVICE not available;"
2639
" cannot bind to interface %s",
2640
self.interface)
2641
elif error.errno == errno.ENODEV:
2642
logger.error("Interface %s does not exist,"
2643
" cannot bind", self.interface)
2644
else:
2645
raise
1995
2646
# Only bind(2) the socket if we really need to.
1996
2647
if self.server_address[0] or self.server_address[1]:
2648
if self.server_address[1]:
2649
self.allow_reuse_address = True
1997
2650
if not self.server_address[0]:
1998
2651
if self.address_family == socket.AF_INET6:
1999
any_address = "::" # in6addr_any
2652
any_address = "::" # in6addr_any
2000
2653
else:
2001
any_address = "0.0.0.0" # INADDR_ANY
2654
any_address = "0.0.0.0" # INADDR_ANY
2002
2655
self.server_address = (any_address,
2003
2656
self.server_address[1])
2004
2657
elif not self.server_address[1]:
2005
self.server_address = (self.server_address[0],
2006
0)
2658
self.server_address = (self.server_address[0], 0)
2007
2659
# if self.interface:
2008
2660
# self.server_address = (self.server_address[0],
2009
2661
# 0, # port
2015
2667
2016
2668
class MandosServer(IPv6_TCPServer):
2017
2669
"""Mandos server.
2018
2670
2019
2671
Attributes:
2020
2672
clients: set of Client objects
2021
2673
gnutls_priority GnuTLS priority string
2022
2674
use_dbus: Boolean; to emit D-Bus signals or not
2023
2024
Assumes a gobject.MainLoop event loop.
2675
2676
Assumes a GLib.MainLoop event loop.
2025
2677
"""
2678
2026
2679
def __init__(self, server_address, RequestHandlerClass,
2027
interface=None, use_ipv6=True, clients=None,
2028
gnutls_priority=None, use_dbus=True, socketfd=None):
2680
interface=None,
2681
use_ipv6=True,
2682
clients=None,
2683
gnutls_priority=None,
2684
use_dbus=True,
2685
socketfd=None):
2029
2686
self.enabled = False
2030
2687
self.clients = clients
2031
2688
if self.clients is None:
2034
2691
self.gnutls_priority = gnutls_priority
2035
2692
IPv6_TCPServer.__init__(self, server_address,
2036
2693
RequestHandlerClass,
2037
interface = interface,
2038
use_ipv6 = use_ipv6,
2039
socketfd = socketfd)
2694
interface=interface,
2695
use_ipv6=use_ipv6,
2696
socketfd=socketfd)
2697
2040
2698
def server_activate(self):
2041
2699
if self.enabled:
2042
2700
return socketserver.TCPServer.server_activate(self)
2043
2701
2044
2702
def enable(self):
2045
2703
self.enabled = True
2046
2704
2047
2705
def add_pipe(self, parent_pipe, proc):
2048
2706
# Call "handle_ipc" for both data and EOF events
2049
gobject.io_add_watch(parent_pipe.fileno(),
2050
gobject.IO_IN | gobject.IO_HUP,
2051
functools.partial(self.handle_ipc,
2052
parent_pipe =
2053
parent_pipe,
2054
proc = proc))
2055
2056
def handle_ipc(self, source, condition, parent_pipe=None,
2057
proc = None, client_object=None):
2707
GLib.io_add_watch(
2708
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2709
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2710
functools.partial(self.handle_ipc,
2711
parent_pipe=parent_pipe,
2712
proc=proc))
2713
2714
def handle_ipc(self, source, condition,
2715
parent_pipe=None,
2716
proc=None,
2717
client_object=None):
2058
2718
# error, or the other end of multiprocessing.Pipe has closed
2059
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2719
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2060
2720
# Wait for other process to exit
2061
2721
proc.join()
2062
2722
return False
2063
2723
2064
2724
# Read a request from the child
2065
2725
request = parent_pipe.recv()
2066
2726
command = request[0]
2067
2727
2068
2728
if command == 'init':
2069
fpr = request[1]
2070
address = request[2]
2071
2072
for c in self.clients.itervalues():
2073
if c.fingerprint == fpr:
2729
key_id = request[1].decode("ascii")
2730
fpr = request[2].decode("ascii")
2731
address = request[3]
2732
2733
for c in self.clients.values():
2734
if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"
2735
"27AE41E4649B934CA495991B7852B855"):
2736
continue
2737
if key_id and c.key_id == key_id:
2738
client = c
2739
break
2740
if fpr and c.fingerprint == fpr:
2074
2741
client = c
2075
2742
break
2076
2743
else:
2077
logger.info("Client not found for fingerprint: %s, ad"
2078
"dress: %s", fpr, address)
2744
logger.info("Client not found for key ID: %s, address"
2745
": %s", key_id or fpr, address)
2079
2746
if self.use_dbus:
2080
2747
# Emit D-Bus signal
2081
mandos_dbus_service.ClientNotFound(fpr,
2748
mandos_dbus_service.ClientNotFound(key_id or fpr,
2082
2749
address[0])
2083
2750
parent_pipe.send(False)
2084
2751
return False
2085
2086
gobject.io_add_watch(parent_pipe.fileno(),
2087
gobject.IO_IN | gobject.IO_HUP,
2088
functools.partial(self.handle_ipc,
2089
parent_pipe =
2090
parent_pipe,
2091
proc = proc,
2092
client_object =
2093
client))
2752
2753
GLib.io_add_watch(
2754
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2755
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2756
functools.partial(self.handle_ipc,
2757
parent_pipe=parent_pipe,
2758
proc=proc,
2759
client_object=client))
2094
2760
parent_pipe.send(True)
2095
2761
# remove the old hook in favor of the new above hook on
2096
2762
# same fileno
2099
2765
funcname = request[1]
2100
2766
args = request[2]
2101
2767
kwargs = request[3]
2102
2768
2103
2769
parent_pipe.send(('data', getattr(client_object,
2104
2770
funcname)(*args,
2105
**kwargs)))
2106
2771
**kwargs)))
2772
2107
2773
if command == 'getattr':
2108
2774
attrname = request[1]
2109
if callable(client_object.__getattribute__(attrname)):
2110
parent_pipe.send(('function',))
2775
if isinstance(client_object.__getattribute__(attrname),
2776
collections.abc.Callable):
2777
parent_pipe.send(('function', ))
2111
2778
else:
2112
parent_pipe.send(('data', client_object
2113
.__getattribute__(attrname)))
2114
2779
parent_pipe.send((
2780
'data', client_object.__getattribute__(attrname)))
2781
2115
2782
if command == 'setattr':
2116
2783
attrname = request[1]
2117
2784
value = request[2]
2118
2785
setattr(client_object, attrname, value)
2119
2786
2120
2787
return True
2121
2788
2122
2789
2123
2790
def rfc3339_duration_to_delta(duration):
2124
2791
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2125
2126
>>> rfc3339_duration_to_delta("P7D")
2127
datetime.timedelta(7)
2128
>>> rfc3339_duration_to_delta("PT60S")
2129
datetime.timedelta(0, 60)
2130
>>> rfc3339_duration_to_delta("PT60M")
2131
datetime.timedelta(0, 3600)
2132
>>> rfc3339_duration_to_delta("PT24H")
2133
datetime.timedelta(1)
2134
>>> rfc3339_duration_to_delta("P1W")
2135
datetime.timedelta(7)
2136
>>> rfc3339_duration_to_delta("PT5M30S")
2137
datetime.timedelta(0, 330)
2138
>>> rfc3339_duration_to_delta("P1DT3M20S")
2139
datetime.timedelta(1, 200)
2792
2793
>>> timedelta = datetime.timedelta
2794
>>> rfc3339_duration_to_delta("P7D") == timedelta(7)
2795
True
2796
>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)
2797
True
2798
>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)
2799
True
2800
>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)
2801
True
2802
>>> rfc3339_duration_to_delta("P1W") == timedelta(7)
2803
True
2804
>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)
2805
True
2806
>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)
2807
True
2808
>>> del timedelta
2140
2809
"""
2141
2810
2142
2811
# Parsing an RFC 3339 duration with regular expressions is not
2143
2812
# possible - there would have to be multiple places for the same
2144
2813
# values, like seconds. The current code, while more esoteric, is
2145
2814
# cleaner without depending on a parsing library. If Python had a
2146
2815
# built-in library for parsing we would use it, but we'd like to
2147
2816
# avoid excessive use of external libraries.
2148
2817
2149
2818
# New type for defining tokens, syntax, and semantics all-in-one
2150
Token = collections.namedtuple("Token",
2151
("regexp", # To match token; if
2152
# "value" is not None,
2153
# must have a "group"
2154
# containing digits
2155
"value", # datetime.timedelta or
2156
# None
2157
"followers")) # Tokens valid after
2158
# this token
2819
Token = collections.namedtuple("Token", (
2820
"regexp", # To match token; if "value" is not None, must have
2821
# a "group" containing digits
2822
"value", # datetime.timedelta or None
2823
"followers")) # Tokens valid after this token
2159
2824
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2160
2825
# the "duration" ABNF definition in RFC 3339, Appendix A.
2161
2826
token_end = Token(re.compile(r"$"), None, frozenset())
2162
2827
token_second = Token(re.compile(r"(\d+)S"),
2163
2828
datetime.timedelta(seconds=1),
2164
frozenset((token_end,)))
2829
frozenset((token_end, )))
2165
2830
token_minute = Token(re.compile(r"(\d+)M"),
2166
2831
datetime.timedelta(minutes=1),
2167
2832
frozenset((token_second, token_end)))
2183
2848
frozenset((token_month, token_end)))
2184
2849
token_week = Token(re.compile(r"(\d+)W"),
2185
2850
datetime.timedelta(weeks=1),
2186
frozenset((token_end,)))
2851
frozenset((token_end, )))
2187
2852
token_duration = Token(re.compile(r"P"), None,
2188
2853
frozenset((token_year, token_month,
2189
2854
token_day, token_time,
2190
token_week))),
2191
# Define starting values
2192
value = datetime.timedelta() # Value so far
2855
token_week)))
2856
# Define starting values:
2857
# Value so far
2858
value = datetime.timedelta()
2193
2859
found_token = None
2194
followers = frozenset(token_duration,) # Following valid tokens
2195
s = duration # String left to parse
2860
# Following valid tokens
2861
followers = frozenset((token_duration, ))
2862
# String left to parse
2863
s = duration
2196
2864
# Loop until end token is found
2197
2865
while found_token is not token_end:
2198
2866
# Search for any currently valid tokens
2214
2882
break
2215
2883
else:
2216
2884
# No currently valid tokens were found
2217
raise ValueError("Invalid RFC 3339 duration")
2885
raise ValueError("Invalid RFC 3339 duration: {!r}"
2886
.format(duration))
2218
2887
# End token found
2219
2888
return value
2220
2889
2221
2890
2222
2891
def string_to_delta(interval):
2223
2892
"""Parse a string and return a datetime.timedelta
2224
2225
>>> string_to_delta('7d')
2226
datetime.timedelta(7)
2227
>>> string_to_delta('60s')
2228
datetime.timedelta(0, 60)
2229
>>> string_to_delta('60m')
2230
datetime.timedelta(0, 3600)
2231
>>> string_to_delta('24h')
2232
datetime.timedelta(1)
2233
>>> string_to_delta('1w')
2234
datetime.timedelta(7)
2235
>>> string_to_delta('5m 30s')
2236
datetime.timedelta(0, 330)
2893
2894
>>> string_to_delta('7d') == datetime.timedelta(7)
2895
True
2896
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2897
True
2898
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2899
True
2900
>>> string_to_delta('24h') == datetime.timedelta(1)
2901
True
2902
>>> string_to_delta('1w') == datetime.timedelta(7)
2903
True
2904
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2905
True
2237
2906
"""
2238
2907
2239
2908
try:
2240
2909
return rfc3339_duration_to_delta(interval)
2241
2910
except ValueError:
2242
2911
pass
2243
2912
2244
2913
timevalue = datetime.timedelta(0)
2245
2914
for s in interval.split():
2246
2915
try:
2247
suffix = unicode(s[-1])
2916
suffix = s[-1]
2248
2917
value = int(s[:-1])
2249
2918
if suffix == "d":
2250
2919
delta = datetime.timedelta(value)
2257
2926
elif suffix == "w":
2258
2927
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2259
2928
else:
2260
raise ValueError("Unknown suffix {0!r}"
2261
.format(suffix))
2929
raise ValueError("Unknown suffix {!r}".format(suffix))
2262
2930
except IndexError as e:
2263
2931
raise ValueError(*(e.args))
2264
2932
timevalue += delta
2265
2933
return timevalue
2266
2934
2267
2935
2268
def daemon(nochdir = False, noclose = False):
2936
def daemon(nochdir=False, noclose=False):
2269
2937
"""See daemon(3). Standard BSD Unix function.
2270
2938
2271
2939
This should really exist as os.daemon, but it doesn't (yet)."""
2272
2940
if os.fork():
2273
2941
sys.exit()
2281
2949
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2282
2950
if not stat.S_ISCHR(os.fstat(null).st_mode):
2283
2951
raise OSError(errno.ENODEV,
2284
"{0} not a character device"
2952
"{} not a character device"
2285
2953
.format(os.devnull))
2286
2954
os.dup2(null, sys.stdin.fileno())
2287
2955
os.dup2(null, sys.stdout.fileno())
2291
2959
2292
2960
2293
2961
def main():
2294
2962
2295
2963
##################################################################
2296
2964
# Parsing of options, both command line and config file
2297
2965
2298
2966
parser = argparse.ArgumentParser()
2299
2967
parser.add_argument("-v", "--version", action="version",
2300
version = "%(prog)s {0}".format(version),
2968
version="%(prog)s {}".format(version),
2301
2969
help="show version number and exit")
2302
2970
parser.add_argument("-i", "--interface", metavar="IF",
2303
2971
help="Bind to interface IF")
2336
3004
help="Directory to save/restore state in")
2337
3005
parser.add_argument("--foreground", action="store_true",
2338
3006
help="Run in foreground", default=None)
2339
3007
parser.add_argument("--no-zeroconf", action="store_false",
3008
dest="zeroconf", help="Do not use Zeroconf",
3009
default=None)
3010
2340
3011
options = parser.parse_args()
2341
2342
if options.check:
2343
import doctest
2344
doctest.testmod()
2345
sys.exit()
2346
3012
2347
3013
# Default values for config file for server-global settings
2348
server_defaults = { "interface": "",
2349
"address": "",
2350
"port": "",
2351
"debug": "False",
2352
"priority":
2353
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2354
"servicename": "Mandos",
2355
"use_dbus": "True",
2356
"use_ipv6": "True",
2357
"debuglevel": "",
2358
"restore": "True",
2359
"socket": "",
2360
"statedir": "/var/lib/mandos",
2361
"foreground": "False",
2362
}
2363
3014
if gnutls.has_rawpk:
3015
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3016
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3017
else:
3018
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3019
":+SIGN-DSA-SHA256")
3020
server_defaults = {"interface": "",
3021
"address": "",
3022
"port": "",
3023
"debug": "False",
3024
"priority": priority,
3025
"servicename": "Mandos",
3026
"use_dbus": "True",
3027
"use_ipv6": "True",
3028
"debuglevel": "",
3029
"restore": "True",
3030
"socket": "",
3031
"statedir": "/var/lib/mandos",
3032
"foreground": "False",
3033
"zeroconf": "True",
3034
}
3035
del priority
3036
2364
3037
# Parse config file for server-global settings
2365
server_config = configparser.SafeConfigParser(server_defaults)
3038
server_config = configparser.ConfigParser(server_defaults)
2366
3039
del server_defaults
2367
server_config.read(os.path.join(options.configdir,
2368
"mandos.conf"))
2369
# Convert the SafeConfigParser object to a dict
3040
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3041
# Convert the ConfigParser object to a dict
2370
3042
server_settings = server_config.defaults()
2371
3043
# Use the appropriate methods on the non-string config options
2372
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
3044
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3045
"foreground", "zeroconf"):
2373
3046
server_settings[option] = server_config.getboolean("DEFAULT",
2374
3047
option)
2375
3048
if server_settings["port"]:
2385
3058
server_settings["socket"] = os.dup(server_settings
2386
3059
["socket"])
2387
3060
del server_config
2388
3061
2389
3062
# Override the settings from the config file with command line
2390
3063
# options, if set.
2391
3064
for option in ("interface", "address", "port", "debug",
2392
"priority", "servicename", "configdir",
2393
"use_dbus", "use_ipv6", "debuglevel", "restore",
2394
"statedir", "socket", "foreground"):
3065
"priority", "servicename", "configdir", "use_dbus",
3066
"use_ipv6", "debuglevel", "restore", "statedir",
3067
"socket", "foreground", "zeroconf"):
2395
3068
value = getattr(options, option)
2396
3069
if value is not None:
2397
3070
server_settings[option] = value
2398
3071
del options
2399
3072
# Force all strings to be unicode
2400
3073
for option in server_settings.keys():
2401
if type(server_settings[option]) is str:
2402
server_settings[option] = unicode(server_settings[option])
3074
if isinstance(server_settings[option], bytes):
3075
server_settings[option] = (server_settings[option]
3076
.decode("utf-8"))
2403
3077
# Force all boolean options to be boolean
2404
3078
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2405
"foreground"):
3079
"foreground", "zeroconf"):
2406
3080
server_settings[option] = bool(server_settings[option])
2407
3081
# Debug implies foreground
2408
3082
if server_settings["debug"]:
2409
3083
server_settings["foreground"] = True
2410
3084
# Now we have our good server settings in "server_settings"
2411
3085
2412
3086
##################################################################
2413
3087
3088
if (not server_settings["zeroconf"]
3089
and not (server_settings["port"]
3090
or server_settings["socket"] != "")):
3091
parser.error("Needs port or socket to work without Zeroconf")
3092
2414
3093
# For convenience
2415
3094
debug = server_settings["debug"]
2416
3095
debuglevel = server_settings["debuglevel"]
2419
3098
stored_state_path = os.path.join(server_settings["statedir"],
2420
3099
stored_state_file)
2421
3100
foreground = server_settings["foreground"]
2422
3101
zeroconf = server_settings["zeroconf"]
3102
2423
3103
if debug:
2424
3104
initlogger(debug, logging.DEBUG)
2425
3105
else:
2428
3108
else:
2429
3109
level = getattr(logging, debuglevel.upper())
2430
3110
initlogger(debug, level)
2431
3111
2432
3112
if server_settings["servicename"] != "Mandos":
2433
syslogger.setFormatter(logging.Formatter
2434
('Mandos ({0}) [%(process)d]:'
2435
' %(levelname)s: %(message)s'
2436
.format(server_settings
2437
["servicename"])))
2438
3113
syslogger.setFormatter(
3114
logging.Formatter('Mandos ({}) [%(process)d]:'
3115
' %(levelname)s: %(message)s'.format(
3116
server_settings["servicename"])))
3117
2439
3118
# Parse config file with clients
2440
client_config = configparser.SafeConfigParser(Client
2441
.client_defaults)
3119
client_config = configparser.ConfigParser(Client.client_defaults)
2442
3120
client_config.read(os.path.join(server_settings["configdir"],
2443
3121
"clients.conf"))
2444
3122
2445
3123
global mandos_dbus_service
2446
3124
mandos_dbus_service = None
2447
2448
tcp_server = MandosServer((server_settings["address"],
2449
server_settings["port"]),
2450
ClientHandler,
2451
interface=(server_settings["interface"]
2452
or None),
2453
use_ipv6=use_ipv6,
2454
gnutls_priority=
2455
server_settings["priority"],
2456
use_dbus=use_dbus,
2457
socketfd=(server_settings["socket"]
2458
or None))
3125
3126
socketfd = None
3127
if server_settings["socket"] != "":
3128
socketfd = server_settings["socket"]
3129
tcp_server = MandosServer(
3130
(server_settings["address"], server_settings["port"]),
3131
ClientHandler,
3132
interface=(server_settings["interface"] or None),
3133
use_ipv6=use_ipv6,
3134
gnutls_priority=server_settings["priority"],
3135
use_dbus=use_dbus,
3136
socketfd=socketfd)
2459
3137
if not foreground:
2460
3138
pidfilename = "/run/mandos.pid"
2461
3139
if not os.path.isdir("/run/."):
2462
3140
pidfilename = "/var/run/mandos.pid"
2463
3141
pidfile = None
2464
3142
try:
2465
pidfile = open(pidfilename, "w")
3143
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2466
3144
except IOError as e:
2467
3145
logger.error("Could not open file %r", pidfilename,
2468
3146
exc_info=e)
2469
2470
for name in ("_mandos", "mandos", "nobody"):
3147
3148
for name, group in (("_mandos", "_mandos"),
3149
("mandos", "mandos"),
3150
("nobody", "nogroup")):
2471
3151
try:
2472
3152
uid = pwd.getpwnam(name).pw_uid
2473
gid = pwd.getpwnam(name).pw_gid
3153
gid = pwd.getpwnam(group).pw_gid
2474
3154
break
2475
3155
except KeyError:
2476
3156
continue
2480
3160
try:
2481
3161
os.setgid(gid)
2482
3162
os.setuid(uid)
3163
if debug:
3164
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3165
gid))
2483
3166
except OSError as error:
3167
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3168
.format(uid, gid, os.strerror(error.errno)))
2484
3169
if error.errno != errno.EPERM:
2485
3170
raise
2486
3171
2487
3172
if debug:
2488
3173
# Enable all possible GnuTLS debugging
2489
3174
2490
3175
# "Use a log level over 10 to enable all debugging options."
2491
3176
# - GnuTLS manual
2492
gnutls.library.functions.gnutls_global_set_log_level(11)
2493
2494
@gnutls.library.types.gnutls_log_func
3177
gnutls.global_set_log_level(11)
3178
3179
@gnutls.log_func
2495
3180
def debug_gnutls(level, string):
2496
3181
logger.debug("GnuTLS: %s", string[:-1])
2497
2498
(gnutls.library.functions
2499
.gnutls_global_set_log_function(debug_gnutls))
2500
3182
3183
gnutls.global_set_log_function(debug_gnutls)
3184
2501
3185
# Redirect stdin so all checkers get /dev/null
2502
3186
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2503
3187
os.dup2(null, sys.stdin.fileno())
2504
3188
if null > 2:
2505
3189
os.close(null)
2506
3190
2507
3191
# Need to fork before connecting to D-Bus
2508
3192
if not foreground:
2509
3193
# Close all input and output, do double fork, etc.
2510
3194
daemon()
2511
2512
# multiprocessing will use threads, so before we use gobject we
2513
# need to inform gobject that threads will be used.
2514
gobject.threads_init()
2515
3195
3196
if gi.version_info < (3, 10, 2):
3197
# multiprocessing will use threads, so before we use GLib we
3198
# need to inform GLib that threads will be used.
3199
GLib.threads_init()
3200
2516
3201
global main_loop
2517
3202
# From the Avahi example code
2518
3203
DBusGMainLoop(set_as_default=True)
2519
main_loop = gobject.MainLoop()
3204
main_loop = GLib.MainLoop()
2520
3205
bus = dbus.SystemBus()
2521
3206
# End of Avahi example code
2522
3207
if use_dbus:
2523
3208
try:
2524
3209
bus_name = dbus.service.BusName("se.recompile.Mandos",
2525
bus, do_not_queue=True)
2526
old_bus_name = (dbus.service.BusName
2527
("se.bsnet.fukt.Mandos", bus,
2528
do_not_queue=True))
2529
except dbus.exceptions.NameExistsException as e:
3210
bus,
3211
do_not_queue=True)
3212
old_bus_name = dbus.service.BusName(
3213
"se.bsnet.fukt.Mandos", bus,
3214
do_not_queue=True)
3215
except dbus.exceptions.DBusException as e:
2530
3216
logger.error("Disabling D-Bus:", exc_info=e)
2531
3217
use_dbus = False
2532
3218
server_settings["use_dbus"] = False
2533
3219
tcp_server.use_dbus = False
2534
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2535
service = AvahiServiceToSyslog(name =
2536
server_settings["servicename"],
2537
servicetype = "_mandos._tcp",
2538
protocol = protocol, bus = bus)
2539
if server_settings["interface"]:
2540
service.interface = (if_nametoindex
2541
(str(server_settings["interface"])))
2542
3220
if zeroconf:
3221
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3222
service = AvahiServiceToSyslog(
3223
name=server_settings["servicename"],
3224
servicetype="_mandos._tcp",
3225
protocol=protocol,
3226
bus=bus)
3227
if server_settings["interface"]:
3228
service.interface = if_nametoindex(
3229
server_settings["interface"].encode("utf-8"))
3230
2543
3231
global multiprocessing_manager
2544
3232
multiprocessing_manager = multiprocessing.Manager()
2545
3233
2546
3234
client_class = Client
2547
3235
if use_dbus:
2548
client_class = functools.partial(ClientDBus, bus = bus)
2549
3236
client_class = functools.partial(ClientDBus, bus=bus)
3237
2550
3238
client_settings = Client.config_parser(client_config)
2551
3239
old_client_settings = {}
2552
3240
clients_data = {}
2553
3241
2554
3242
# This is used to redirect stdout and stderr for checker processes
2555
3243
global wnull
2556
wnull = open(os.devnull, "w") # A writable /dev/null
3244
wnull = open(os.devnull, "w") # A writable /dev/null
2557
3245
# Only used if server is running in foreground but not in debug
2558
3246
# mode
2559
3247
if debug or not foreground:
2560
3248
wnull.close()
2561
3249
2562
3250
# Get client data and settings from last running state.
2563
3251
if server_settings["restore"]:
2564
3252
try:
2565
3253
with open(stored_state_path, "rb") as stored_state:
2566
clients_data, old_client_settings = (pickle.load
2567
(stored_state))
3254
if sys.version_info.major == 2:
3255
clients_data, old_client_settings = pickle.load(
3256
stored_state)
3257
else:
3258
bytes_clients_data, bytes_old_client_settings = (
3259
pickle.load(stored_state, encoding="bytes"))
3260
# Fix bytes to strings
3261
# clients_data
3262
# .keys()
3263
clients_data = {(key.decode("utf-8")
3264
if isinstance(key, bytes)
3265
else key): value
3266
for key, value in
3267
bytes_clients_data.items()}
3268
del bytes_clients_data
3269
for key in clients_data:
3270
value = {(k.decode("utf-8")
3271
if isinstance(k, bytes) else k): v
3272
for k, v in
3273
clients_data[key].items()}
3274
clients_data[key] = value
3275
# .client_structure
3276
value["client_structure"] = [
3277
(s.decode("utf-8")
3278
if isinstance(s, bytes)
3279
else s) for s in
3280
value["client_structure"]]
3281
# .name, .host, and .checker_command
3282
for k in ("name", "host", "checker_command"):
3283
if isinstance(value[k], bytes):
3284
value[k] = value[k].decode("utf-8")
3285
if "key_id" not in value:
3286
value["key_id"] = ""
3287
elif "fingerprint" not in value:
3288
value["fingerprint"] = ""
3289
# old_client_settings
3290
# .keys()
3291
old_client_settings = {
3292
(key.decode("utf-8")
3293
if isinstance(key, bytes)
3294
else key): value
3295
for key, value in
3296
bytes_old_client_settings.items()}
3297
del bytes_old_client_settings
3298
# .host and .checker_command
3299
for value in old_client_settings.values():
3300
for attribute in ("host", "checker_command"):
3301
if isinstance(value[attribute], bytes):
3302
value[attribute] = (value[attribute]
3303
.decode("utf-8"))
2568
3304
os.remove(stored_state_path)
2569
3305
except IOError as e:
2570
3306
if e.errno == errno.ENOENT:
2571
logger.warning("Could not load persistent state: {0}"
2572
.format(os.strerror(e.errno)))
3307
logger.warning("Could not load persistent state:"
3308
" {}".format(os.strerror(e.errno)))
2573
3309
else:
2574
3310
logger.critical("Could not load persistent state:",
2575
3311
exc_info=e)
2576
3312
raise
2577
3313
except EOFError as e:
2578
3314
logger.warning("Could not load persistent state: "
2579
"EOFError:", exc_info=e)
2580
3315
"EOFError:",
3316
exc_info=e)
3317
2581
3318
with PGPEngine() as pgp:
2582
for client_name, client in clients_data.iteritems():
3319
for client_name, client in clients_data.items():
2583
3320
# Skip removed clients
2584
3321
if client_name not in client_settings:
2585
3322
continue
2586
3323
2587
3324
# Decide which value to use after restoring saved state.
2588
3325
# We have three different values: Old config file,
2589
3326
# new config file, and saved state.
2594
3331
# For each value in new config, check if it
2595
3332
# differs from the old config value (Except for
2596
3333
# the "secret" attribute)
2597
if (name != "secret" and
2598
value != old_client_settings[client_name]
2599
[name]):
3334
if (name != "secret"
3335
and (value !=
3336
old_client_settings[client_name][name])):
2600
3337
client[name] = value
2601
3338
except KeyError:
2602
3339
pass
2603
3340
2604
3341
# Clients who has passed its expire date can still be
2605
# enabled if its last checker was successful. Clients
3342
# enabled if its last checker was successful. A Client
2606
3343
# whose checker succeeded before we stored its state is
2607
3344
# assumed to have successfully run all checkers during
2608
3345
# downtime.
2610
3347
if datetime.datetime.utcnow() >= client["expires"]:
2611
3348
if not client["last_checked_ok"]:
2612
3349
logger.warning(
2613
"disabling client {0} - Client never "
2614
"performed a successful checker"
2615
.format(client_name))
3350
"disabling client {} - Client never "
3351
"performed a successful checker".format(
3352
client_name))
2616
3353
client["enabled"] = False
2617
3354
elif client["last_checker_status"] != 0:
2618
3355
logger.warning(
2619
"disabling client {0} - Client "
2620
"last checker failed with error code {1}"
2621
.format(client_name,
2622
client["last_checker_status"]))
3356
"disabling client {} - Client last"
3357
" checker failed with error code"
3358
" {}".format(
3359
client_name,
3360
client["last_checker_status"]))
2623
3361
client["enabled"] = False
2624
3362
else:
2625
client["expires"] = (datetime.datetime
2626
.utcnow()
2627
+ client["timeout"])
3363
client["expires"] = (
3364
datetime.datetime.utcnow()
3365
+ client["timeout"])
2628
3366
logger.debug("Last checker succeeded,"
2629
" keeping {0} enabled"
2630
.format(client_name))
3367
" keeping {} enabled".format(
3368
client_name))
2631
3369
try:
2632
client["secret"] = (
2633
pgp.decrypt(client["encrypted_secret"],
2634
client_settings[client_name]
2635
["secret"]))
3370
client["secret"] = pgp.decrypt(
3371
client["encrypted_secret"],
3372
client_settings[client_name]["secret"])
2636
3373
except PGPError:
2637
3374
# If decryption fails, we use secret from new settings
2638
logger.debug("Failed to decrypt {0} old secret"
2639
.format(client_name))
2640
client["secret"] = (
2641
client_settings[client_name]["secret"])
2642
3375
logger.debug("Failed to decrypt {} old secret".format(
3376
client_name))
3377
client["secret"] = (client_settings[client_name]
3378
["secret"])
3379
2643
3380
# Add/remove clients based on new changes made to config
2644
3381
for client_name in (set(old_client_settings)
2645
3382
- set(client_settings)):
2647
3384
for client_name in (set(client_settings)
2648
3385
- set(old_client_settings)):
2649
3386
clients_data[client_name] = client_settings[client_name]
2650
3387
2651
3388
# Create all client objects
2652
for client_name, client in clients_data.iteritems():
3389
for client_name, client in clients_data.items():
2653
3390
tcp_server.clients[client_name] = client_class(
2654
name = client_name, settings = client,
2655
server_settings = server_settings)
2656
3391
name=client_name,
3392
settings=client,
3393
server_settings=server_settings)
3394
2657
3395
if not tcp_server.clients:
2658
3396
logger.warning("No clients defined")
2659
3397
2660
3398
if not foreground:
2661
3399
if pidfile is not None:
3400
pid = os.getpid()
2662
3401
try:
2663
3402
with pidfile:
2664
pid = os.getpid()
2665
pidfile.write(str(pid) + "\n".encode("utf-8"))
3403
print(pid, file=pidfile)
2666
3404
except IOError:
2667
3405
logger.error("Could not write to file %r with PID %d",
2668
3406
pidfilename, pid)
2669
3407
del pidfile
2670
3408
del pidfilename
2671
2672
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2673
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2674
3409
3410
for termsig in (signal.SIGHUP, signal.SIGTERM):
3411
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3412
lambda: main_loop.quit() and False)
3413
2675
3414
if use_dbus:
2676
@alternate_dbus_interfaces({"se.recompile.Mandos":
2677
"se.bsnet.fukt.Mandos"})
2678
class MandosDBusService(DBusObjectWithProperties):
3415
3416
@alternate_dbus_interfaces(
3417
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3418
class MandosDBusService(DBusObjectWithObjectManager):
2679
3419
"""A D-Bus proxy object"""
3420
2680
3421
def __init__(self):
2681
3422
dbus.service.Object.__init__(self, bus, "/")
3423
2682
3424
_interface = "se.recompile.Mandos"
2683
2684
@dbus_interface_annotations(_interface)
2685
def _foo(self):
2686
return { "org.freedesktop.DBus.Property"
2687
".EmitsChangedSignal":
2688
"false"}
2689
3425
2690
3426
@dbus.service.signal(_interface, signature="o")
2691
3427
def ClientAdded(self, objpath):
2692
3428
"D-Bus signal"
2693
3429
pass
2694
3430
2695
3431
@dbus.service.signal(_interface, signature="ss")
2696
def ClientNotFound(self, fingerprint, address):
3432
def ClientNotFound(self, key_id, address):
2697
3433
"D-Bus signal"
2698
3434
pass
2699
3435
3436
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3437
"true"})
2700
3438
@dbus.service.signal(_interface, signature="os")
2701
3439
def ClientRemoved(self, objpath, name):
2702
3440
"D-Bus signal"
2703
3441
pass
2704
3442
3443
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3444
"true"})
2705
3445
@dbus.service.method(_interface, out_signature="ao")
2706
3446
def GetAllClients(self):
2707
3447
"D-Bus method"
2708
return dbus.Array(c.dbus_object_path
2709
for c in
2710
tcp_server.clients.itervalues())
2711
3448
return dbus.Array(c.dbus_object_path for c in
3449
tcp_server.clients.values())
3450
3451
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3452
"true"})
2712
3453
@dbus.service.method(_interface,
2713
3454
out_signature="a{oa{sv}}")
2714
3455
def GetAllClientsWithProperties(self):
2715
3456
"D-Bus method"
2716
3457
return dbus.Dictionary(
2717
((c.dbus_object_path, c.GetAll(""))
2718
for c in tcp_server.clients.itervalues()),
3458
{c.dbus_object_path: c.GetAll(
3459
"se.recompile.Mandos.Client")
3460
for c in tcp_server.clients.values()},
2719
3461
signature="oa{sv}")
2720
3462
2721
3463
@dbus.service.method(_interface, in_signature="o")
2722
3464
def RemoveClient(self, object_path):
2723
3465
"D-Bus method"
2724
for c in tcp_server.clients.itervalues():
3466
for c in tcp_server.clients.values():
2725
3467
if c.dbus_object_path == object_path:
2726
3468
del tcp_server.clients[c.name]
2727
3469
c.remove_from_connection()
2728
# Don't signal anything except ClientRemoved
3470
# Don't signal the disabling
2729
3471
c.disable(quiet=True)
2730
# Emit D-Bus signal
2731
self.ClientRemoved(object_path, c.name)
3472
# Emit D-Bus signal for removal
3473
self.client_removed_signal(c)
2732
3474
return
2733
3475
raise KeyError(object_path)
2734
3476
2735
3477
del _interface
2736
3478
3479
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3480
out_signature="a{oa{sa{sv}}}")
3481
def GetManagedObjects(self):
3482
"""D-Bus method"""
3483
return dbus.Dictionary(
3484
{client.dbus_object_path:
3485
dbus.Dictionary(
3486
{interface: client.GetAll(interface)
3487
for interface in
3488
client._get_all_interface_names()})
3489
for client in tcp_server.clients.values()})
3490
3491
def client_added_signal(self, client):
3492
"""Send the new standard signal and the old signal"""
3493
if use_dbus:
3494
# New standard signal
3495
self.InterfacesAdded(
3496
client.dbus_object_path,
3497
dbus.Dictionary(
3498
{interface: client.GetAll(interface)
3499
for interface in
3500
client._get_all_interface_names()}))
3501
# Old signal
3502
self.ClientAdded(client.dbus_object_path)
3503
3504
def client_removed_signal(self, client):
3505
"""Send the new standard signal and the old signal"""
3506
if use_dbus:
3507
# New standard signal
3508
self.InterfacesRemoved(
3509
client.dbus_object_path,
3510
client._get_all_interface_names())
3511
# Old signal
3512
self.ClientRemoved(client.dbus_object_path,
3513
client.name)
3514
2737
3515
mandos_dbus_service = MandosDBusService()
2738
3516
3517
# Save modules to variables to exempt the modules from being
3518
# unloaded before the function registered with atexit() is run.
3519
mp = multiprocessing
3520
wn = wnull
3521
2739
3522
def cleanup():
2740
3523
"Cleanup function; run on exit"
2741
service.cleanup()
2742
2743
multiprocessing.active_children()
2744
wnull.close()
3524
if zeroconf:
3525
service.cleanup()
3526
3527
mp.active_children()
3528
wn.close()
2745
3529
if not (tcp_server.clients or client_settings):
2746
3530
return
2747
3531
2748
3532
# Store client before exiting. Secrets are encrypted with key
2749
3533
# based on what config file has. If config file is
2750
3534
# removed/edited, old secret will thus be unrecovable.
2751
3535
clients = {}
2752
3536
with PGPEngine() as pgp:
2753
for client in tcp_server.clients.itervalues():
3537
for client in tcp_server.clients.values():
2754
3538
key = client_settings[client.name]["secret"]
2755
3539
client.encrypted_secret = pgp.encrypt(client.secret,
2756
3540
key)
2757
3541
client_dict = {}
2758
3542
2759
3543
# A list of attributes that can not be pickled
2760
3544
# + secret.
2761
exclude = set(("bus", "changedstate", "secret",
2762
"checker", "server_settings"))
2763
for name, typ in (inspect.getmembers
2764
(dbus.service.Object)):
3545
exclude = {"bus", "changedstate", "secret",
3546
"checker", "server_settings"}
3547
for name, typ in inspect.getmembers(dbus.service
3548
.Object):
2765
3549
exclude.add(name)
2766
3550
2767
3551
client_dict["encrypted_secret"] = (client
2768
3552
.encrypted_secret)
2769
3553
for attr in client.client_structure:
2770
3554
if attr not in exclude:
2771
3555
client_dict[attr] = getattr(client, attr)
2772
3556
2773
3557
clients[client.name] = client_dict
2774
3558
del client_settings[client.name]["secret"]
2775
3559
2776
3560
try:
2777
with (tempfile.NamedTemporaryFile
2778
(mode='wb', suffix=".pickle", prefix='clients-',
2779
dir=os.path.dirname(stored_state_path),
2780
delete=False)) as stored_state:
2781
pickle.dump((clients, client_settings), stored_state)
2782
tempname=stored_state.name
3561
with tempfile.NamedTemporaryFile(
3562
mode='wb',
3563
suffix=".pickle",
3564
prefix='clients-',
3565
dir=os.path.dirname(stored_state_path),
3566
delete=False) as stored_state:
3567
pickle.dump((clients, client_settings), stored_state,
3568
protocol=2)
3569
tempname = stored_state.name
2783
3570
os.rename(tempname, stored_state_path)
2784
3571
except (IOError, OSError) as e:
2785
3572
if not debug:
2788
3575
except NameError:
2789
3576
pass
2790
3577
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2791
logger.warning("Could not save persistent state: {0}"
3578
logger.warning("Could not save persistent state: {}"
2792
3579
.format(os.strerror(e.errno)))
2793
3580
else:
2794
3581
logger.warning("Could not save persistent state:",
2795
3582
exc_info=e)
2796
3583
raise
2797
3584
2798
3585
# Delete all clients, and settings from config
2799
3586
while tcp_server.clients:
2800
3587
name, client = tcp_server.clients.popitem()
2801
3588
if use_dbus:
2802
3589
client.remove_from_connection()
2803
# Don't signal anything except ClientRemoved
3590
# Don't signal the disabling
2804
3591
client.disable(quiet=True)
3592
# Emit D-Bus signal for removal
2805
3593
if use_dbus:
2806
# Emit D-Bus signal
2807
mandos_dbus_service.ClientRemoved(client
2808
.dbus_object_path,
2809
client.name)
3594
mandos_dbus_service.client_removed_signal(client)
2810
3595
client_settings.clear()
2811
3596
2812
3597
atexit.register(cleanup)
2813
2814
for client in tcp_server.clients.itervalues():
3598
3599
for client in tcp_server.clients.values():
2815
3600
if use_dbus:
2816
# Emit D-Bus signal
2817
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3601
# Emit D-Bus signal for adding
3602
mandos_dbus_service.client_added_signal(client)
2818
3603
# Need to initiate checking of clients
2819
3604
if client.enabled:
2820
3605
client.init_checker()
2821
3606
2822
3607
tcp_server.enable()
2823
3608
tcp_server.server_activate()
2824
3609
2825
3610
# Find out what port we got
2826
service.port = tcp_server.socket.getsockname()[1]
3611
if zeroconf:
3612
service.port = tcp_server.socket.getsockname()[1]
2827
3613
if use_ipv6:
2828
3614
logger.info("Now listening on address %r, port %d,"
2829
3615
" flowinfo %d, scope_id %d",
2831
3617
else: # IPv4
2832
3618
logger.info("Now listening on address %r, port %d",
2833
3619
*tcp_server.socket.getsockname())
2834
2835
#service.interface = tcp_server.socket.getsockname()[3]
2836
3620
3621
# service.interface = tcp_server.socket.getsockname()[3]
3622
2837
3623
try:
2838
# From the Avahi example code
2839
try:
2840
service.activate()
2841
except dbus.exceptions.DBusException as error:
2842
logger.critical("D-Bus Exception", exc_info=error)
2843
cleanup()
2844
sys.exit(1)
2845
# End of Avahi example code
2846
2847
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2848
lambda *args, **kwargs:
2849
(tcp_server.handle_request
2850
(*args[2:], **kwargs) or True))
2851
3624
if zeroconf:
3625
# From the Avahi example code
3626
try:
3627
service.activate()
3628
except dbus.exceptions.DBusException as error:
3629
logger.critical("D-Bus Exception", exc_info=error)
3630
cleanup()
3631
sys.exit(1)
3632
# End of Avahi example code
3633
3634
GLib.io_add_watch(
3635
GLib.IOChannel.unix_new(tcp_server.fileno()),
3636
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3637
lambda *args, **kwargs: (tcp_server.handle_request
3638
(*args[2:], **kwargs) or True))
3639
2852
3640
logger.debug("Starting main loop")
2853
3641
main_loop.run()
2854
3642
except AvahiError as error:
2863
3651
# Must run before the D-Bus bus name gets deregistered
2864
3652
cleanup()
2865
3653
3654
3655
def should_only_run_tests():
3656
parser = argparse.ArgumentParser(add_help=False)
3657
parser.add_argument("--check", action='store_true')
3658
args, unknown_args = parser.parse_known_args()
3659
run_tests = args.check
3660
if run_tests:
3661
# Remove --check argument from sys.argv
3662
sys.argv[1:] = unknown_args
3663
return run_tests
3664
3665
# Add all tests from doctest strings
3666
def load_tests(loader, tests, none):
3667
import doctest
3668
tests.addTests(doctest.DocTestSuite())
3669
return tests
3670
2866
3671
if __name__ == '__main__':
2867
main()
3672
try:
3673
if should_only_run_tests():
3674
# Call using ./mandos --check [--verbose]
3675
unittest.main()
3676
else:
3677
main()
3678
finally:
3679
logging.shutdown()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0