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- Committer: teddy at recompile
- Date: 2020-07-04 11:58:52 UTC
- Revision ID: teddy@recompile.se-20200704115852-oquhnmng3zom4ldl
Update copyright year
* DBUS-API: Update copyright year to 2020
* debian/copyright: - '' -
* dracut-module/ask-password-mandos.service: - '' -
* dracut-module/password-agent.c: - '' -
* mandos: - '' -
* mandos-ctl: - '' -
* plugin-runner.c: - '' -
* plugins.d/mandos-client.c: - '' -
* plugins.d/plymouth.c: - '' -
* mandos-to-cryptroot-unlock: Update copyright year to 2019.
* DBUS-API: Update copyright year to 2020
* debian/copyright: - '' -
* dracut-module/ask-password-mandos.service: - '' -
* dracut-module/password-agent.c: - '' -
* mandos: - '' -
* mandos-ctl: - '' -
* plugin-runner.c: - '' -
* plugins.d/mandos-client.c: - '' -
* plugins.d/plymouth.c: - '' -
* mandos-to-cryptroot-unlock: Update copyright year to 2019.
- 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 © 2008-2014 Teddy Hogeborn
15
# Copyright © 2008-2014 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 = "1.6.4"
129
# In Python 2.7 it seems to have been removed entirely.
130
# Try running the C preprocessor:
131
try:
132
cc = subprocess.Popen(["cc", "--language=c", "-E",
133
"/dev/stdin"],
134
stdin=subprocess.PIPE,
135
stdout=subprocess.PIPE)
136
stdout = cc.communicate(
137
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
138
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
139
except (OSError, ValueError, IndexError):
140
# No value found
141
SO_BINDTODEVICE = None
142
143
if sys.version_info < (3, 2):
144
configparser.Configparser = configparser.SafeConfigParser
145
146
version = "1.8.11"
92
147
stored_state_file = "clients.pickle"
93
148
94
149
logger = logging.getLogger()
150
logging.captureWarnings(True) # Show warnings via the logging system
95
151
syslogger = None
96
152
97
153
try:
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
100
.if_nametoindex)
154
if_nametoindex = ctypes.cdll.LoadLibrary(
155
ctypes.util.find_library("c")).if_nametoindex
101
156
except (OSError, AttributeError):
157
102
158
def if_nametoindex(interface):
103
159
"Get an interface index the hard way, i.e. using fcntl()"
104
160
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
105
161
with contextlib.closing(socket.socket()) as s:
106
162
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
107
struct.pack(str("16s16x"),
108
interface))
109
interface_index = struct.unpack(str("I"),
110
ifreq[16:20])[0]
163
struct.pack(b"16s16x", interface))
164
interface_index = struct.unpack("I", ifreq[16:20])[0]
111
165
return interface_index
112
166
113
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
114
184
def initlogger(debug, level=logging.WARNING):
115
185
"""init logger and add loglevel"""
116
117
syslogger = (logging.handlers.SysLogHandler
118
(facility =
119
logging.handlers.SysLogHandler.LOG_DAEMON,
120
address = str("/dev/log")))
186
187
global syslogger
188
syslogger = (logging.handlers.SysLogHandler(
189
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
190
address="/dev/log"))
121
191
syslogger.setFormatter(logging.Formatter
122
192
('Mandos [%(process)d]: %(levelname)s:'
123
193
' %(message)s'))
124
194
logger.addHandler(syslogger)
125
195
126
196
if debug:
127
197
console = logging.StreamHandler()
128
198
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
138
208
pass
139
209
140
210
141
class PGPEngine(object):
211
class PGPEngine:
142
212
"""A simple class for OpenPGP symmetric encryption & decryption"""
213
143
214
def __init__(self):
144
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
145
227
self.gnupgargs = ['--batch',
146
'--home', self.tempdir,
228
'--homedir', self.tempdir,
147
229
'--force-mdc',
148
'--quiet',
149
'--no-use-agent']
150
230
'--quiet']
231
# Only GPG version 1 has the --no-use-agent option.
232
if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
233
self.gnupgargs.append("--no-use-agent")
234
151
235
def __enter__(self):
152
236
return self
153
237
154
238
def __exit__(self, exc_type, exc_value, traceback):
155
239
self._cleanup()
156
240
return False
157
241
158
242
def __del__(self):
159
243
self._cleanup()
160
244
161
245
def _cleanup(self):
162
246
if self.tempdir is not None:
163
247
# Delete contents of tempdir
164
248
for root, dirs, files in os.walk(self.tempdir,
165
topdown = False):
249
topdown=False):
166
250
for filename in files:
167
251
os.remove(os.path.join(root, filename))
168
252
for dirname in dirs:
170
254
# Remove tempdir
171
255
os.rmdir(self.tempdir)
172
256
self.tempdir = None
173
257
174
258
def password_encode(self, password):
175
259
# Passphrase can not be empty and can not contain newlines or
176
260
# NUL bytes. So we prefix it and hex encode it.
181
265
.replace(b"\n", b"\\n")
182
266
.replace(b"\0", b"\\x00"))
183
267
return encoded
184
268
185
269
def encrypt(self, data, password):
186
270
passphrase = self.password_encode(password)
187
with tempfile.NamedTemporaryFile(dir=self.tempdir
188
) as passfile:
271
with tempfile.NamedTemporaryFile(
272
dir=self.tempdir) as passfile:
189
273
passfile.write(passphrase)
190
274
passfile.flush()
191
proc = subprocess.Popen(['gpg', '--symmetric',
275
proc = subprocess.Popen([self.gpg, '--symmetric',
192
276
'--passphrase-file',
193
277
passfile.name]
194
278
+ self.gnupgargs,
195
stdin = subprocess.PIPE,
196
stdout = subprocess.PIPE,
197
stderr = subprocess.PIPE)
198
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)
199
283
if proc.returncode != 0:
200
284
raise PGPError(err)
201
285
return ciphertext
202
286
203
287
def decrypt(self, data, password):
204
288
passphrase = self.password_encode(password)
205
with tempfile.NamedTemporaryFile(dir = self.tempdir
206
) as passfile:
289
with tempfile.NamedTemporaryFile(
290
dir=self.tempdir) as passfile:
207
291
passfile.write(passphrase)
208
292
passfile.flush()
209
proc = subprocess.Popen(['gpg', '--decrypt',
293
proc = subprocess.Popen([self.gpg, '--decrypt',
210
294
'--passphrase-file',
211
295
passfile.name]
212
296
+ self.gnupgargs,
213
stdin = subprocess.PIPE,
214
stdout = subprocess.PIPE,
215
stderr = subprocess.PIPE)
216
decrypted_plaintext, err = proc.communicate(input
217
= data)
297
stdin=subprocess.PIPE,
298
stdout=subprocess.PIPE,
299
stderr=subprocess.PIPE)
300
decrypted_plaintext, err = proc.communicate(input=data)
218
301
if proc.returncode != 0:
219
302
raise PGPError(err)
220
303
return decrypted_plaintext
221
304
222
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
223
332
class AvahiError(Exception):
224
333
def __init__(self, value, *args, **kwargs):
225
334
self.value = value
226
super(AvahiError, self).__init__(value, *args, **kwargs)
227
def __unicode__(self):
228
return unicode(repr(self.value))
335
return super(AvahiError, self).__init__(value, *args,
336
**kwargs)
337
229
338
230
339
class AvahiServiceError(AvahiError):
231
340
pass
232
341
342
233
343
class AvahiGroupError(AvahiError):
234
344
pass
235
345
236
346
237
class AvahiService(object):
347
class AvahiService:
238
348
"""An Avahi (Zeroconf) service.
239
349
240
350
Attributes:
241
351
interface: integer; avahi.IF_UNSPEC or an interface index.
242
352
Used to optionally bind to the specified interface.
254
364
server: D-Bus Server
255
365
bus: dbus.SystemBus()
256
366
"""
257
258
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
259
servicetype = None, port = None, TXT = None,
260
domain = "", host = "", max_renames = 32768,
261
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):
262
379
self.interface = interface
263
380
self.name = name
264
381
self.type = servicetype
273
390
self.server = None
274
391
self.bus = bus
275
392
self.entry_group_state_changed_match = None
276
277
def rename(self):
393
394
def rename(self, remove=True):
278
395
"""Derived from the Avahi example code"""
279
396
if self.rename_count >= self.max_renames:
280
397
logger.critical("No suitable Zeroconf service name found"
281
398
" after %i retries, exiting.",
282
399
self.rename_count)
283
400
raise AvahiServiceError("Too many renames")
284
self.name = unicode(self.server
285
.GetAlternativeServiceName(self.name))
401
self.name = str(
402
self.server.GetAlternativeServiceName(self.name))
403
self.rename_count += 1
286
404
logger.info("Changing Zeroconf service name to %r ...",
287
405
self.name)
288
self.remove()
406
if remove:
407
self.remove()
289
408
try:
290
409
self.add()
291
410
except dbus.exceptions.DBusException as error:
292
logger.critical("D-Bus Exception", exc_info=error)
293
self.cleanup()
294
os._exit(1)
295
self.rename_count += 1
296
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
297
420
def remove(self):
298
421
"""Derived from the Avahi example code"""
299
422
if self.entry_group_state_changed_match is not None:
301
424
self.entry_group_state_changed_match = None
302
425
if self.group is not None:
303
426
self.group.Reset()
304
427
305
428
def add(self):
306
429
"""Derived from the Avahi example code"""
307
430
self.remove()
324
447
dbus.UInt16(self.port),
325
448
avahi.string_array_to_txt_array(self.TXT))
326
449
self.group.Commit()
327
450
328
451
def entry_group_state_changed(self, state, error):
329
452
"""Derived from the Avahi example code"""
330
453
logger.debug("Avahi entry group state change: %i", state)
331
454
332
455
if state == avahi.ENTRY_GROUP_ESTABLISHED:
333
456
logger.debug("Zeroconf service established.")
334
457
elif state == avahi.ENTRY_GROUP_COLLISION:
336
459
self.rename()
337
460
elif state == avahi.ENTRY_GROUP_FAILURE:
338
461
logger.critical("Avahi: Error in group state changed %s",
339
unicode(error))
340
raise AvahiGroupError("State changed: {0!s}"
341
.format(error))
342
462
str(error))
463
raise AvahiGroupError("State changed: {!s}".format(error))
464
343
465
def cleanup(self):
344
466
"""Derived from the Avahi example code"""
345
467
if self.group is not None:
350
472
pass
351
473
self.group = None
352
474
self.remove()
353
475
354
476
def server_state_changed(self, state, error=None):
355
477
"""Derived from the Avahi example code"""
356
478
logger.debug("Avahi server state change: %i", state)
357
bad_states = { avahi.SERVER_INVALID:
358
"Zeroconf server invalid",
359
avahi.SERVER_REGISTERING: None,
360
avahi.SERVER_COLLISION:
361
"Zeroconf server name collision",
362
avahi.SERVER_FAILURE:
363
"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
}
364
485
if state in bad_states:
365
486
if bad_states[state] is not None:
366
487
if error is None:
369
490
logger.error(bad_states[state] + ": %r", error)
370
491
self.cleanup()
371
492
elif state == avahi.SERVER_RUNNING:
372
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)
373
505
else:
374
506
if error is None:
375
507
logger.debug("Unknown state: %r", state)
376
508
else:
377
509
logger.debug("Unknown state: %r: %r", state, error)
378
510
379
511
def activate(self):
380
512
"""Derived from the Avahi example code"""
381
513
if self.server is None:
385
517
follow_name_owner_changes=True),
386
518
avahi.DBUS_INTERFACE_SERVER)
387
519
self.server.connect_to_signal("StateChanged",
388
self.server_state_changed)
520
self.server_state_changed)
389
521
self.server_state_changed(self.server.GetState())
390
522
391
523
392
524
class AvahiServiceToSyslog(AvahiService):
393
def rename(self):
525
def rename(self, *args, **kwargs):
394
526
"""Add the new name to the syslog messages"""
395
ret = AvahiService.rename(self)
396
syslogger.setFormatter(logging.Formatter
397
('Mandos ({0}) [%(process)d]:'
398
' %(levelname)s: %(message)s'
399
.format(self.name)))
527
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
528
syslogger.setFormatter(logging.Formatter(
529
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
530
.format(self.name)))
400
531
return ret
401
532
402
533
403
def timedelta_to_milliseconds(td):
404
"Convert a datetime.timedelta() to milliseconds"
405
return ((td.days * 24 * 60 * 60 * 1000)
406
+ (td.seconds * 1000)
407
+ (td.microseconds // 1000))
408
409
410
class Client(object):
534
# Pretend that we have a GnuTLS module
535
class gnutls:
536
"""This isn't so much a class as it is a module-like namespace."""
537
538
library = ctypes.util.find_library("gnutls")
539
if library is None:
540
library = ctypes.util.find_library("gnutls-deb0")
541
_library = ctypes.cdll.LoadLibrary(library)
542
del library
543
544
# Unless otherwise indicated, the constants and types below are
545
# all from the gnutls/gnutls.h C header file.
546
547
# Constants
548
E_SUCCESS = 0
549
E_INTERRUPTED = -52
550
E_AGAIN = -28
551
CRT_OPENPGP = 2
552
CRT_RAWPK = 3
553
CLIENT = 2
554
SHUT_RDWR = 0
555
CRD_CERTIFICATE = 1
556
E_NO_CERTIFICATE_FOUND = -49
557
X509_FMT_DER = 0
558
NO_TICKETS = 1<<10
559
ENABLE_RAWPK = 1<<18
560
CTYPE_PEERS = 3
561
KEYID_USE_SHA256 = 1 # gnutls/x509.h
562
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
563
564
# Types
565
class session_int(ctypes.Structure):
566
_fields_ = []
567
session_t = ctypes.POINTER(session_int)
568
569
class certificate_credentials_st(ctypes.Structure):
570
_fields_ = []
571
certificate_credentials_t = ctypes.POINTER(
572
certificate_credentials_st)
573
certificate_type_t = ctypes.c_int
574
575
class datum_t(ctypes.Structure):
576
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
577
('size', ctypes.c_uint)]
578
579
class openpgp_crt_int(ctypes.Structure):
580
_fields_ = []
581
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
582
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
583
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
584
credentials_type_t = ctypes.c_int
585
transport_ptr_t = ctypes.c_void_p
586
close_request_t = ctypes.c_int
587
588
# Exceptions
589
class Error(Exception):
590
def __init__(self, message=None, code=None, args=()):
591
# Default usage is by a message string, but if a return
592
# code is passed, convert it to a string with
593
# gnutls.strerror()
594
self.code = code
595
if message is None and code is not None:
596
message = gnutls.strerror(code)
597
return super(gnutls.Error, self).__init__(
598
message, *args)
599
600
class CertificateSecurityError(Error):
601
pass
602
603
# Classes
604
class Credentials:
605
def __init__(self):
606
self._c_object = gnutls.certificate_credentials_t()
607
gnutls.certificate_allocate_credentials(
608
ctypes.byref(self._c_object))
609
self.type = gnutls.CRD_CERTIFICATE
610
611
def __del__(self):
612
gnutls.certificate_free_credentials(self._c_object)
613
614
class ClientSession:
615
def __init__(self, socket, credentials=None):
616
self._c_object = gnutls.session_t()
617
gnutls_flags = gnutls.CLIENT
618
if gnutls.check_version(b"3.5.6"):
619
gnutls_flags |= gnutls.NO_TICKETS
620
if gnutls.has_rawpk:
621
gnutls_flags |= gnutls.ENABLE_RAWPK
622
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
623
del gnutls_flags
624
gnutls.set_default_priority(self._c_object)
625
gnutls.transport_set_ptr(self._c_object, socket.fileno())
626
gnutls.handshake_set_private_extensions(self._c_object,
627
True)
628
self.socket = socket
629
if credentials is None:
630
credentials = gnutls.Credentials()
631
gnutls.credentials_set(self._c_object, credentials.type,
632
ctypes.cast(credentials._c_object,
633
ctypes.c_void_p))
634
self.credentials = credentials
635
636
def __del__(self):
637
gnutls.deinit(self._c_object)
638
639
def handshake(self):
640
return gnutls.handshake(self._c_object)
641
642
def send(self, data):
643
data = bytes(data)
644
data_len = len(data)
645
while data_len > 0:
646
data_len -= gnutls.record_send(self._c_object,
647
data[-data_len:],
648
data_len)
649
650
def bye(self):
651
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
652
653
# Error handling functions
654
def _error_code(result):
655
"""A function to raise exceptions on errors, suitable
656
for the 'restype' attribute on ctypes functions"""
657
if result >= 0:
658
return result
659
if result == gnutls.E_NO_CERTIFICATE_FOUND:
660
raise gnutls.CertificateSecurityError(code=result)
661
raise gnutls.Error(code=result)
662
663
def _retry_on_error(result, func, arguments):
664
"""A function to retry on some errors, suitable
665
for the 'errcheck' attribute on ctypes functions"""
666
while result < 0:
667
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
668
return _error_code(result)
669
result = func(*arguments)
670
return result
671
672
# Unless otherwise indicated, the function declarations below are
673
# all from the gnutls/gnutls.h C header file.
674
675
# Functions
676
priority_set_direct = _library.gnutls_priority_set_direct
677
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
678
ctypes.POINTER(ctypes.c_char_p)]
679
priority_set_direct.restype = _error_code
680
681
init = _library.gnutls_init
682
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
683
init.restype = _error_code
684
685
set_default_priority = _library.gnutls_set_default_priority
686
set_default_priority.argtypes = [session_t]
687
set_default_priority.restype = _error_code
688
689
record_send = _library.gnutls_record_send
690
record_send.argtypes = [session_t, ctypes.c_void_p,
691
ctypes.c_size_t]
692
record_send.restype = ctypes.c_ssize_t
693
record_send.errcheck = _retry_on_error
694
695
certificate_allocate_credentials = (
696
_library.gnutls_certificate_allocate_credentials)
697
certificate_allocate_credentials.argtypes = [
698
ctypes.POINTER(certificate_credentials_t)]
699
certificate_allocate_credentials.restype = _error_code
700
701
certificate_free_credentials = (
702
_library.gnutls_certificate_free_credentials)
703
certificate_free_credentials.argtypes = [
704
certificate_credentials_t]
705
certificate_free_credentials.restype = None
706
707
handshake_set_private_extensions = (
708
_library.gnutls_handshake_set_private_extensions)
709
handshake_set_private_extensions.argtypes = [session_t,
710
ctypes.c_int]
711
handshake_set_private_extensions.restype = None
712
713
credentials_set = _library.gnutls_credentials_set
714
credentials_set.argtypes = [session_t, credentials_type_t,
715
ctypes.c_void_p]
716
credentials_set.restype = _error_code
717
718
strerror = _library.gnutls_strerror
719
strerror.argtypes = [ctypes.c_int]
720
strerror.restype = ctypes.c_char_p
721
722
certificate_type_get = _library.gnutls_certificate_type_get
723
certificate_type_get.argtypes = [session_t]
724
certificate_type_get.restype = _error_code
725
726
certificate_get_peers = _library.gnutls_certificate_get_peers
727
certificate_get_peers.argtypes = [session_t,
728
ctypes.POINTER(ctypes.c_uint)]
729
certificate_get_peers.restype = ctypes.POINTER(datum_t)
730
731
global_set_log_level = _library.gnutls_global_set_log_level
732
global_set_log_level.argtypes = [ctypes.c_int]
733
global_set_log_level.restype = None
734
735
global_set_log_function = _library.gnutls_global_set_log_function
736
global_set_log_function.argtypes = [log_func]
737
global_set_log_function.restype = None
738
739
deinit = _library.gnutls_deinit
740
deinit.argtypes = [session_t]
741
deinit.restype = None
742
743
handshake = _library.gnutls_handshake
744
handshake.argtypes = [session_t]
745
handshake.restype = _error_code
746
handshake.errcheck = _retry_on_error
747
748
transport_set_ptr = _library.gnutls_transport_set_ptr
749
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
750
transport_set_ptr.restype = None
751
752
bye = _library.gnutls_bye
753
bye.argtypes = [session_t, close_request_t]
754
bye.restype = _error_code
755
bye.errcheck = _retry_on_error
756
757
check_version = _library.gnutls_check_version
758
check_version.argtypes = [ctypes.c_char_p]
759
check_version.restype = ctypes.c_char_p
760
761
_need_version = b"3.3.0"
762
if check_version(_need_version) is None:
763
raise self.Error("Needs GnuTLS {} or later"
764
.format(_need_version))
765
766
_tls_rawpk_version = b"3.6.6"
767
has_rawpk = bool(check_version(_tls_rawpk_version))
768
769
if has_rawpk:
770
# Types
771
class pubkey_st(ctypes.Structure):
772
_fields = []
773
pubkey_t = ctypes.POINTER(pubkey_st)
774
775
x509_crt_fmt_t = ctypes.c_int
776
777
# All the function declarations below are from gnutls/abstract.h
778
pubkey_init = _library.gnutls_pubkey_init
779
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
780
pubkey_init.restype = _error_code
781
782
pubkey_import = _library.gnutls_pubkey_import
783
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
784
x509_crt_fmt_t]
785
pubkey_import.restype = _error_code
786
787
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
788
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
789
ctypes.POINTER(ctypes.c_ubyte),
790
ctypes.POINTER(ctypes.c_size_t)]
791
pubkey_get_key_id.restype = _error_code
792
793
pubkey_deinit = _library.gnutls_pubkey_deinit
794
pubkey_deinit.argtypes = [pubkey_t]
795
pubkey_deinit.restype = None
796
else:
797
# All the function declarations below are from gnutls/openpgp.h
798
799
openpgp_crt_init = _library.gnutls_openpgp_crt_init
800
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
801
openpgp_crt_init.restype = _error_code
802
803
openpgp_crt_import = _library.gnutls_openpgp_crt_import
804
openpgp_crt_import.argtypes = [openpgp_crt_t,
805
ctypes.POINTER(datum_t),
806
openpgp_crt_fmt_t]
807
openpgp_crt_import.restype = _error_code
808
809
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
810
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
811
ctypes.POINTER(ctypes.c_uint)]
812
openpgp_crt_verify_self.restype = _error_code
813
814
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
815
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
816
openpgp_crt_deinit.restype = None
817
818
openpgp_crt_get_fingerprint = (
819
_library.gnutls_openpgp_crt_get_fingerprint)
820
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
821
ctypes.c_void_p,
822
ctypes.POINTER(
823
ctypes.c_size_t)]
824
openpgp_crt_get_fingerprint.restype = _error_code
825
826
if check_version(b"3.6.4"):
827
certificate_type_get2 = _library.gnutls_certificate_type_get2
828
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
829
certificate_type_get2.restype = _error_code
830
831
# Remove non-public functions
832
del _error_code, _retry_on_error
833
834
835
def call_pipe(connection, # : multiprocessing.Connection
836
func, *args, **kwargs):
837
"""This function is meant to be called by multiprocessing.Process
838
839
This function runs func(*args, **kwargs), and writes the resulting
840
return value on the provided multiprocessing.Connection.
841
"""
842
connection.send(func(*args, **kwargs))
843
connection.close()
844
845
846
class Client:
411
847
"""A representation of a client host served by this server.
412
848
413
849
Attributes:
414
850
approved: bool(); 'None' if not yet approved/disapproved
415
851
approval_delay: datetime.timedelta(); Time to wait for approval
416
852
approval_duration: datetime.timedelta(); Duration of one approval
417
checker: subprocess.Popen(); a running checker process used
418
to see if the client lives.
419
'None' if no process is running.
420
checker_callback_tag: a gobject event source tag, or None
853
checker: multiprocessing.Process(); a running checker process used
854
to see if the client lives. 'None' if no process is
855
running.
856
checker_callback_tag: a GLib event source tag, or None
421
857
checker_command: string; External command which is run to check
422
858
if client lives. %() expansions are done at
423
859
runtime with vars(self) as dict, so that for
424
860
instance %(name)s can be used in the command.
425
checker_initiator_tag: a gobject event source tag, or None
861
checker_initiator_tag: a GLib event source tag, or None
426
862
created: datetime.datetime(); (UTC) object creation
427
863
client_structure: Object describing what attributes a client has
428
864
and is used for storing the client at exit
429
865
current_checker_command: string; current running checker_command
430
disable_initiator_tag: a gobject event source tag, or None
866
disable_initiator_tag: a GLib event source tag, or None
431
867
enabled: bool()
432
868
fingerprint: string (40 or 32 hexadecimal digits); used to
433
uniquely identify the client
869
uniquely identify an OpenPGP client
870
key_id: string (64 hexadecimal digits); used to uniquely identify
871
a client using raw public keys
434
872
host: string; available for use by the checker command
435
873
interval: datetime.timedelta(); How often to start a new checker
436
874
last_approval_request: datetime.datetime(); (UTC) or None
438
876
last_checker_status: integer between 0 and 255 reflecting exit
439
877
status of last checker. -1 reflects crashed
440
878
checker, -2 means no checker completed yet.
879
last_checker_signal: The signal which killed the last checker, if
880
last_checker_status is -1
441
881
last_enabled: datetime.datetime(); (UTC) or None
442
882
name: string; from the config file, used in log messages and
443
883
D-Bus identifiers
450
890
disabled, or None
451
891
server_settings: The server_settings dict from main()
452
892
"""
453
893
454
894
runtime_expansions = ("approval_delay", "approval_duration",
455
"created", "enabled", "expires",
895
"created", "enabled", "expires", "key_id",
456
896
"fingerprint", "host", "interval",
457
897
"last_approval_request", "last_checked_ok",
458
898
"last_enabled", "name", "timeout")
459
client_defaults = { "timeout": "PT5M",
460
"extended_timeout": "PT15M",
461
"interval": "PT2M",
462
"checker": "fping -q -- %%(host)s",
463
"host": "",
464
"approval_delay": "PT0S",
465
"approval_duration": "PT1S",
466
"approved_by_default": "True",
467
"enabled": "True",
468
}
469
470
def timeout_milliseconds(self):
471
"Return the 'timeout' attribute in milliseconds"
472
return timedelta_to_milliseconds(self.timeout)
473
474
def extended_timeout_milliseconds(self):
475
"Return the 'extended_timeout' attribute in milliseconds"
476
return timedelta_to_milliseconds(self.extended_timeout)
477
478
def interval_milliseconds(self):
479
"Return the 'interval' attribute in milliseconds"
480
return timedelta_to_milliseconds(self.interval)
481
482
def approval_delay_milliseconds(self):
483
return timedelta_to_milliseconds(self.approval_delay)
484
899
client_defaults = {
900
"timeout": "PT5M",
901
"extended_timeout": "PT15M",
902
"interval": "PT2M",
903
"checker": "fping -q -- %%(host)s",
904
"host": "",
905
"approval_delay": "PT0S",
906
"approval_duration": "PT1S",
907
"approved_by_default": "True",
908
"enabled": "True",
909
}
910
485
911
@staticmethod
486
912
def config_parser(config):
487
913
"""Construct a new dict of client settings of this form:
494
920
for client_name in config.sections():
495
921
section = dict(config.items(client_name))
496
922
client = settings[client_name] = {}
497
923
498
924
client["host"] = section["host"]
499
925
# Reformat values from string types to Python types
500
926
client["approved_by_default"] = config.getboolean(
501
927
client_name, "approved_by_default")
502
928
client["enabled"] = config.getboolean(client_name,
503
929
"enabled")
504
930
931
# Uppercase and remove spaces from key_id and fingerprint
932
# for later comparison purposes with return value from the
933
# key_id() and fingerprint() functions
934
client["key_id"] = (section.get("key_id", "").upper()
935
.replace(" ", ""))
505
936
client["fingerprint"] = (section["fingerprint"].upper()
506
937
.replace(" ", ""))
507
938
if "secret" in section:
508
client["secret"] = section["secret"].decode("base64")
939
client["secret"] = codecs.decode(section["secret"]
940
.encode("utf-8"),
941
"base64")
509
942
elif "secfile" in section:
510
943
with open(os.path.expanduser(os.path.expandvars
511
944
(section["secfile"])),
512
945
"rb") as secfile:
513
946
client["secret"] = secfile.read()
514
947
else:
515
raise TypeError("No secret or secfile for section {0}"
948
raise TypeError("No secret or secfile for section {}"
516
949
.format(section))
517
950
client["timeout"] = string_to_delta(section["timeout"])
518
951
client["extended_timeout"] = string_to_delta(
526
959
client["last_approval_request"] = None
527
960
client["last_checked_ok"] = None
528
961
client["last_checker_status"] = -2
529
962
530
963
return settings
531
532
def __init__(self, settings, name = None, server_settings=None):
964
965
def __init__(self, settings, name=None, server_settings=None):
533
966
self.name = name
534
967
if server_settings is None:
535
968
server_settings = {}
536
969
self.server_settings = server_settings
537
970
# adding all client settings
538
for setting, value in settings.iteritems():
971
for setting, value in settings.items():
539
972
setattr(self, setting, value)
540
973
541
974
if self.enabled:
542
975
if not hasattr(self, "last_enabled"):
543
976
self.last_enabled = datetime.datetime.utcnow()
547
980
else:
548
981
self.last_enabled = None
549
982
self.expires = None
550
983
551
984
logger.debug("Creating client %r", self.name)
552
# Uppercase and remove spaces from fingerprint for later
553
# comparison purposes with return value from the fingerprint()
554
# function
985
logger.debug(" Key ID: %s", self.key_id)
555
986
logger.debug(" Fingerprint: %s", self.fingerprint)
556
987
self.created = settings.get("created",
557
988
datetime.datetime.utcnow())
558
989
559
990
# attributes specific for this server instance
560
991
self.checker = None
561
992
self.checker_initiator_tag = None
564
995
self.current_checker_command = None
565
996
self.approved = None
566
997
self.approvals_pending = 0
567
self.changedstate = (multiprocessing_manager
568
.Condition(multiprocessing_manager
569
.Lock()))
570
self.client_structure = [attr for attr in
571
self.__dict__.iterkeys()
998
self.changedstate = multiprocessing_manager.Condition(
999
multiprocessing_manager.Lock())
1000
self.client_structure = [attr
1001
for attr in self.__dict__.keys()
572
1002
if not attr.startswith("_")]
573
1003
self.client_structure.append("client_structure")
574
575
for name, t in inspect.getmembers(type(self),
576
lambda obj:
577
isinstance(obj,
578
property)):
1004
1005
for name, t in inspect.getmembers(
1006
type(self), lambda obj: isinstance(obj, property)):
579
1007
if not name.startswith("_"):
580
1008
self.client_structure.append(name)
581
1009
582
1010
# Send notice to process children that client state has changed
583
1011
def send_changedstate(self):
584
1012
with self.changedstate:
585
1013
self.changedstate.notify_all()
586
1014
587
1015
def enable(self):
588
1016
"""Start this client's checker and timeout hooks"""
589
1017
if getattr(self, "enabled", False):
594
1022
self.last_enabled = datetime.datetime.utcnow()
595
1023
self.init_checker()
596
1024
self.send_changedstate()
597
1025
598
1026
def disable(self, quiet=True):
599
1027
"""Disable this client."""
600
1028
if not getattr(self, "enabled", False):
602
1030
if not quiet:
603
1031
logger.info("Disabling client %s", self.name)
604
1032
if getattr(self, "disable_initiator_tag", None) is not None:
605
gobject.source_remove(self.disable_initiator_tag)
1033
GLib.source_remove(self.disable_initiator_tag)
606
1034
self.disable_initiator_tag = None
607
1035
self.expires = None
608
1036
if getattr(self, "checker_initiator_tag", None) is not None:
609
gobject.source_remove(self.checker_initiator_tag)
1037
GLib.source_remove(self.checker_initiator_tag)
610
1038
self.checker_initiator_tag = None
611
1039
self.stop_checker()
612
1040
self.enabled = False
613
1041
if not quiet:
614
1042
self.send_changedstate()
615
# Do not run this again if called by a gobject.timeout_add
1043
# Do not run this again if called by a GLib.timeout_add
616
1044
return False
617
1045
618
1046
def __del__(self):
619
1047
self.disable()
620
1048
621
1049
def init_checker(self):
622
1050
# Schedule a new checker to be started an 'interval' from now,
623
1051
# and every interval from then on.
624
1052
if self.checker_initiator_tag is not None:
625
gobject.source_remove(self.checker_initiator_tag)
626
self.checker_initiator_tag = (gobject.timeout_add
627
(self.interval_milliseconds(),
628
self.start_checker))
1053
GLib.source_remove(self.checker_initiator_tag)
1054
self.checker_initiator_tag = GLib.timeout_add(
1055
random.randrange(int(self.interval.total_seconds() * 1000
1056
+ 1)),
1057
self.start_checker)
629
1058
# Schedule a disable() when 'timeout' has passed
630
1059
if self.disable_initiator_tag is not None:
631
gobject.source_remove(self.disable_initiator_tag)
632
self.disable_initiator_tag = (gobject.timeout_add
633
(self.timeout_milliseconds(),
634
self.disable))
1060
GLib.source_remove(self.disable_initiator_tag)
1061
self.disable_initiator_tag = GLib.timeout_add(
1062
int(self.timeout.total_seconds() * 1000), self.disable)
635
1063
# Also start a new checker *right now*.
636
1064
self.start_checker()
637
638
def checker_callback(self, pid, condition, command):
1065
1066
def checker_callback(self, source, condition, connection,
1067
command):
639
1068
"""The checker has completed, so take appropriate actions."""
1069
# Read return code from connection (see call_pipe)
1070
returncode = connection.recv()
1071
connection.close()
1072
if self.checker is not None:
1073
self.checker.join()
640
1074
self.checker_callback_tag = None
641
1075
self.checker = None
642
if os.WIFEXITED(condition):
643
self.last_checker_status = os.WEXITSTATUS(condition)
1076
1077
if returncode >= 0:
1078
self.last_checker_status = returncode
1079
self.last_checker_signal = None
644
1080
if self.last_checker_status == 0:
645
1081
logger.info("Checker for %(name)s succeeded",
646
1082
vars(self))
647
1083
self.checked_ok()
648
1084
else:
649
logger.info("Checker for %(name)s failed",
650
vars(self))
1085
logger.info("Checker for %(name)s failed", vars(self))
651
1086
else:
652
1087
self.last_checker_status = -1
1088
self.last_checker_signal = -returncode
653
1089
logger.warning("Checker for %(name)s crashed?",
654
1090
vars(self))
655
1091
return False
1092
656
1093
def checked_ok(self):
657
1094
"""Assert that the client has been seen, alive and well."""
658
1095
self.last_checked_ok = datetime.datetime.utcnow()
659
1096
self.last_checker_status = 0
1097
self.last_checker_signal = None
660
1098
self.bump_timeout()
661
1099
662
1100
def bump_timeout(self, timeout=None):
663
1101
"""Bump up the timeout for this client."""
664
1102
if timeout is None:
665
1103
timeout = self.timeout
666
1104
if self.disable_initiator_tag is not None:
667
gobject.source_remove(self.disable_initiator_tag)
1105
GLib.source_remove(self.disable_initiator_tag)
668
1106
self.disable_initiator_tag = None
669
1107
if getattr(self, "enabled", False):
670
self.disable_initiator_tag = (gobject.timeout_add
671
(timedelta_to_milliseconds
672
(timeout), self.disable))
1108
self.disable_initiator_tag = GLib.timeout_add(
1109
int(timeout.total_seconds() * 1000), self.disable)
673
1110
self.expires = datetime.datetime.utcnow() + timeout
674
1111
675
1112
def need_approval(self):
676
1113
self.last_approval_request = datetime.datetime.utcnow()
677
1114
678
1115
def start_checker(self):
679
1116
"""Start a new checker subprocess if one is not running.
680
1117
681
1118
If a checker already exists, leave it running and do
682
1119
nothing."""
683
1120
# The reason for not killing a running checker is that if we
688
1125
# checkers alone, the checker would have to take more time
689
1126
# than 'timeout' for the client to be disabled, which is as it
690
1127
# should be.
691
692
# If a checker exists, make sure it is not a zombie
693
try:
694
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
695
except AttributeError:
696
pass
697
except OSError as error:
698
if error.errno != errno.ECHILD:
699
raise
700
else:
701
if pid:
702
logger.warning("Checker was a zombie")
703
gobject.source_remove(self.checker_callback_tag)
704
self.checker_callback(pid, status,
705
self.current_checker_command)
1128
1129
if self.checker is not None and not self.checker.is_alive():
1130
logger.warning("Checker was not alive; joining")
1131
self.checker.join()
1132
self.checker = None
706
1133
# Start a new checker if needed
707
1134
if self.checker is None:
708
1135
# Escape attributes for the shell
709
escaped_attrs = dict(
710
(attr, re.escape(unicode(getattr(self, attr))))
711
for attr in
712
self.runtime_expansions)
1136
escaped_attrs = {
1137
attr: shlex.quote(str(getattr(self, attr)))
1138
for attr in self.runtime_expansions}
713
1139
try:
714
1140
command = self.checker_command % escaped_attrs
715
1141
except TypeError as error:
716
1142
logger.error('Could not format string "%s"',
717
self.checker_command, exc_info=error)
718
return True # Try again later
1143
self.checker_command,
1144
exc_info=error)
1145
return True # Try again later
719
1146
self.current_checker_command = command
720
try:
721
logger.info("Starting checker %r for %s",
722
command, self.name)
723
# We don't need to redirect stdout and stderr, since
724
# in normal mode, that is already done by daemon(),
725
# and in debug mode we don't want to. (Stdin is
726
# always replaced by /dev/null.)
727
# The exception is when not debugging but nevertheless
728
# running in the foreground; use the previously
729
# created wnull.
730
popen_args = {}
731
if (not self.server_settings["debug"]
732
and self.server_settings["foreground"]):
733
popen_args.update({"stdout": wnull,
734
"stderr": wnull })
735
self.checker = subprocess.Popen(command,
736
close_fds=True,
737
shell=True, cwd="/",
738
**popen_args)
739
except OSError as error:
740
logger.error("Failed to start subprocess",
741
exc_info=error)
742
return True
743
self.checker_callback_tag = (gobject.child_watch_add
744
(self.checker.pid,
745
self.checker_callback,
746
data=command))
747
# The checker may have completed before the gobject
748
# watch was added. Check for this.
749
try:
750
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
751
except OSError as error:
752
if error.errno == errno.ECHILD:
753
# This should never happen
754
logger.error("Child process vanished",
755
exc_info=error)
756
return True
757
raise
758
if pid:
759
gobject.source_remove(self.checker_callback_tag)
760
self.checker_callback(pid, status, command)
761
# Re-run this periodically if run by gobject.timeout_add
1147
logger.info("Starting checker %r for %s", command,
1148
self.name)
1149
# We don't need to redirect stdout and stderr, since
1150
# in normal mode, that is already done by daemon(),
1151
# and in debug mode we don't want to. (Stdin is
1152
# always replaced by /dev/null.)
1153
# The exception is when not debugging but nevertheless
1154
# running in the foreground; use the previously
1155
# created wnull.
1156
popen_args = {"close_fds": True,
1157
"shell": True,
1158
"cwd": "/"}
1159
if (not self.server_settings["debug"]
1160
and self.server_settings["foreground"]):
1161
popen_args.update({"stdout": wnull,
1162
"stderr": wnull})
1163
pipe = multiprocessing.Pipe(duplex=False)
1164
self.checker = multiprocessing.Process(
1165
target=call_pipe,
1166
args=(pipe[1], subprocess.call, command),
1167
kwargs=popen_args)
1168
self.checker.start()
1169
self.checker_callback_tag = GLib.io_add_watch(
1170
GLib.IOChannel.unix_new(pipe[0].fileno()),
1171
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1172
self.checker_callback, pipe[0], command)
1173
# Re-run this periodically if run by GLib.timeout_add
762
1174
return True
763
1175
764
1176
def stop_checker(self):
765
1177
"""Force the checker process, if any, to stop."""
766
1178
if self.checker_callback_tag:
767
gobject.source_remove(self.checker_callback_tag)
1179
GLib.source_remove(self.checker_callback_tag)
768
1180
self.checker_callback_tag = None
769
1181
if getattr(self, "checker", None) is None:
770
1182
return
771
1183
logger.debug("Stopping checker for %(name)s", vars(self))
772
try:
773
self.checker.terminate()
774
#time.sleep(0.5)
775
#if self.checker.poll() is None:
776
# self.checker.kill()
777
except OSError as error:
778
if error.errno != errno.ESRCH: # No such process
779
raise
1184
self.checker.terminate()
780
1185
self.checker = None
781
1186
782
1187
783
def dbus_service_property(dbus_interface, signature="v",
784
access="readwrite", byte_arrays=False):
1188
def dbus_service_property(dbus_interface,
1189
signature="v",
1190
access="readwrite",
1191
byte_arrays=False):
785
1192
"""Decorators for marking methods of a DBusObjectWithProperties to
786
1193
become properties on the D-Bus.
787
1194
788
1195
The decorated method will be called with no arguments by "Get"
789
1196
and with one argument by "Set".
790
1197
791
1198
The parameters, where they are supported, are the same as
792
1199
dbus.service.method, except there is only "signature", since the
793
1200
type from Get() and the type sent to Set() is the same.
796
1203
# "Set" method, so we fail early here:
797
1204
if byte_arrays and signature != "ay":
798
1205
raise ValueError("Byte arrays not supported for non-'ay'"
799
" signature {0!r}".format(signature))
1206
" signature {!r}".format(signature))
1207
800
1208
def decorator(func):
801
1209
func._dbus_is_property = True
802
1210
func._dbus_interface = dbus_interface
805
1213
func._dbus_name = func.__name__
806
1214
if func._dbus_name.endswith("_dbus_property"):
807
1215
func._dbus_name = func._dbus_name[:-14]
808
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1216
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
809
1217
return func
1218
810
1219
return decorator
811
1220
812
1221
813
1222
def dbus_interface_annotations(dbus_interface):
814
1223
"""Decorator for marking functions returning interface annotations
815
1224
816
1225
Usage:
817
1226
818
1227
@dbus_interface_annotations("org.example.Interface")
819
1228
def _foo(self): # Function name does not matter
820
1229
return {"org.freedesktop.DBus.Deprecated": "true",
821
1230
"org.freedesktop.DBus.Property.EmitsChangedSignal":
822
1231
"false"}
823
1232
"""
1233
824
1234
def decorator(func):
825
1235
func._dbus_is_interface = True
826
1236
func._dbus_interface = dbus_interface
827
1237
func._dbus_name = dbus_interface
828
1238
return func
1239
829
1240
return decorator
830
1241
831
1242
832
1243
def dbus_annotations(annotations):
833
1244
"""Decorator to annotate D-Bus methods, signals or properties
834
1245
Usage:
835
1246
1247
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1248
"org.freedesktop.DBus.Property."
1249
"EmitsChangedSignal": "false"})
836
1250
@dbus_service_property("org.example.Interface", signature="b",
837
1251
access="r")
838
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
839
"org.freedesktop.DBus.Property."
840
"EmitsChangedSignal": "false"})
841
1252
def Property_dbus_property(self):
842
1253
return dbus.Boolean(False)
1254
1255
See also the DBusObjectWithAnnotations class.
843
1256
"""
1257
844
1258
def decorator(func):
845
1259
func._dbus_annotations = annotations
846
1260
return func
1261
847
1262
return decorator
848
1263
849
1264
850
1265
class DBusPropertyException(dbus.exceptions.DBusException):
851
1266
"""A base class for D-Bus property-related exceptions
852
1267
"""
853
def __unicode__(self):
854
return unicode(str(self))
1268
pass
855
1269
856
1270
857
1271
class DBusPropertyAccessException(DBusPropertyException):
866
1280
pass
867
1281
868
1282
869
class DBusObjectWithProperties(dbus.service.Object):
870
"""A D-Bus object with properties.
871
872
Classes inheriting from this can use the dbus_service_property
873
decorator to expose methods as D-Bus properties. It exposes the
874
standard Get(), Set(), and GetAll() methods on the D-Bus.
1283
class DBusObjectWithAnnotations(dbus.service.Object):
1284
"""A D-Bus object with annotations.
1285
1286
Classes inheriting from this can use the dbus_annotations
1287
decorator to add annotations to methods or signals.
875
1288
"""
876
1289
877
1290
@staticmethod
878
1291
def _is_dbus_thing(thing):
879
1292
"""Returns a function testing if an attribute is a D-Bus thing
880
1293
881
1294
If called like _is_dbus_thing("method") it returns a function
882
1295
suitable for use as predicate to inspect.getmembers().
883
1296
"""
884
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
1297
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
885
1298
False)
886
1299
887
1300
def _get_all_dbus_things(self, thing):
888
1301
"""Returns a generator of (name, attribute) pairs
889
1302
"""
890
return ((getattr(athing.__get__(self), "_dbus_name",
891
name),
1303
return ((getattr(athing.__get__(self), "_dbus_name", name),
892
1304
athing.__get__(self))
893
1305
for cls in self.__class__.__mro__
894
1306
for name, athing in
895
inspect.getmembers(cls,
896
self._is_dbus_thing(thing)))
897
1307
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1308
1309
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1310
out_signature="s",
1311
path_keyword='object_path',
1312
connection_keyword='connection')
1313
def Introspect(self, object_path, connection):
1314
"""Overloading of standard D-Bus method.
1315
1316
Inserts annotation tags on methods and signals.
1317
"""
1318
xmlstring = dbus.service.Object.Introspect(self, object_path,
1319
connection)
1320
try:
1321
document = xml.dom.minidom.parseString(xmlstring)
1322
1323
for if_tag in document.getElementsByTagName("interface"):
1324
# Add annotation tags
1325
for typ in ("method", "signal"):
1326
for tag in if_tag.getElementsByTagName(typ):
1327
annots = dict()
1328
for name, prop in (self.
1329
_get_all_dbus_things(typ)):
1330
if (name == tag.getAttribute("name")
1331
and prop._dbus_interface
1332
== if_tag.getAttribute("name")):
1333
annots.update(getattr(
1334
prop, "_dbus_annotations", {}))
1335
for name, value in annots.items():
1336
ann_tag = document.createElement(
1337
"annotation")
1338
ann_tag.setAttribute("name", name)
1339
ann_tag.setAttribute("value", value)
1340
tag.appendChild(ann_tag)
1341
# Add interface annotation tags
1342
for annotation, value in dict(
1343
itertools.chain.from_iterable(
1344
annotations().items()
1345
for name, annotations
1346
in self._get_all_dbus_things("interface")
1347
if name == if_tag.getAttribute("name")
1348
)).items():
1349
ann_tag = document.createElement("annotation")
1350
ann_tag.setAttribute("name", annotation)
1351
ann_tag.setAttribute("value", value)
1352
if_tag.appendChild(ann_tag)
1353
# Fix argument name for the Introspect method itself
1354
if (if_tag.getAttribute("name")
1355
== dbus.INTROSPECTABLE_IFACE):
1356
for cn in if_tag.getElementsByTagName("method"):
1357
if cn.getAttribute("name") == "Introspect":
1358
for arg in cn.getElementsByTagName("arg"):
1359
if (arg.getAttribute("direction")
1360
== "out"):
1361
arg.setAttribute("name",
1362
"xml_data")
1363
xmlstring = document.toxml("utf-8")
1364
document.unlink()
1365
except (AttributeError, xml.dom.DOMException,
1366
xml.parsers.expat.ExpatError) as error:
1367
logger.error("Failed to override Introspection method",
1368
exc_info=error)
1369
return xmlstring
1370
1371
1372
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1373
"""A D-Bus object with properties.
1374
1375
Classes inheriting from this can use the dbus_service_property
1376
decorator to expose methods as D-Bus properties. It exposes the
1377
standard Get(), Set(), and GetAll() methods on the D-Bus.
1378
"""
1379
898
1380
def _get_dbus_property(self, interface_name, property_name):
899
1381
"""Returns a bound method if one exists which is a D-Bus
900
1382
property with the specified name and interface.
901
1383
"""
902
for cls in self.__class__.__mro__:
903
for name, value in (inspect.getmembers
904
(cls,
905
self._is_dbus_thing("property"))):
1384
for cls in self.__class__.__mro__:
1385
for name, value in inspect.getmembers(
1386
cls, self._is_dbus_thing("property")):
906
1387
if (value._dbus_name == property_name
907
1388
and value._dbus_interface == interface_name):
908
1389
return value.__get__(self)
909
1390
910
1391
# No such property
911
raise DBusPropertyNotFound(self.dbus_object_path + ":"
912
+ interface_name + "."
913
+ property_name)
914
915
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1392
raise DBusPropertyNotFound("{}:{}.{}".format(
1393
self.dbus_object_path, interface_name, property_name))
1394
1395
@classmethod
1396
def _get_all_interface_names(cls):
1397
"""Get a sequence of all interfaces supported by an object"""
1398
return (name for name in set(getattr(getattr(x, attr),
1399
"_dbus_interface", None)
1400
for x in (inspect.getmro(cls))
1401
for attr in dir(x))
1402
if name is not None)
1403
1404
@dbus.service.method(dbus.PROPERTIES_IFACE,
1405
in_signature="ss",
916
1406
out_signature="v")
917
1407
def Get(self, interface_name, property_name):
918
1408
"""Standard D-Bus property Get() method, see D-Bus standard.
924
1414
if not hasattr(value, "variant_level"):
925
1415
return value
926
1416
return type(value)(value, variant_level=value.variant_level+1)
927
1417
928
1418
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
929
1419
def Set(self, interface_name, property_name, value):
930
1420
"""Standard D-Bus property Set() method, see D-Bus standard.
937
1427
# signatures other than "ay".
938
1428
if prop._dbus_signature != "ay":
939
1429
raise ValueError("Byte arrays not supported for non-"
940
"'ay' signature {0!r}"
1430
"'ay' signature {!r}"
941
1431
.format(prop._dbus_signature))
942
value = dbus.ByteArray(b''.join(chr(byte)
943
for byte in value))
1432
value = dbus.ByteArray(bytes(value))
944
1433
prop(value)
945
946
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1434
1435
@dbus.service.method(dbus.PROPERTIES_IFACE,
1436
in_signature="s",
947
1437
out_signature="a{sv}")
948
1438
def GetAll(self, interface_name):
949
1439
"""Standard D-Bus property GetAll() method, see D-Bus
950
1440
standard.
951
1441
952
1442
Note: Will not include properties with access="write".
953
1443
"""
954
1444
properties = {}
964
1454
if not hasattr(value, "variant_level"):
965
1455
properties[name] = value
966
1456
continue
967
properties[name] = type(value)(value, variant_level=
968
value.variant_level+1)
1457
properties[name] = type(value)(
1458
value, variant_level=value.variant_level + 1)
969
1459
return dbus.Dictionary(properties, signature="sv")
970
1460
1461
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1462
def PropertiesChanged(self, interface_name, changed_properties,
1463
invalidated_properties):
1464
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1465
standard.
1466
"""
1467
pass
1468
971
1469
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
972
1470
out_signature="s",
973
1471
path_keyword='object_path',
974
1472
connection_keyword='connection')
975
1473
def Introspect(self, object_path, connection):
976
1474
"""Overloading of standard D-Bus method.
977
1475
978
1476
Inserts property tags and interface annotation tags.
979
1477
"""
980
xmlstring = dbus.service.Object.Introspect(self, object_path,
981
connection)
1478
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1479
object_path,
1480
connection)
982
1481
try:
983
1482
document = xml.dom.minidom.parseString(xmlstring)
1483
984
1484
def make_tag(document, name, prop):
985
1485
e = document.createElement("property")
986
1486
e.setAttribute("name", name)
987
1487
e.setAttribute("type", prop._dbus_signature)
988
1488
e.setAttribute("access", prop._dbus_access)
989
1489
return e
1490
990
1491
for if_tag in document.getElementsByTagName("interface"):
991
1492
# Add property tags
992
1493
for tag in (make_tag(document, name, prop)
995
1496
if prop._dbus_interface
996
1497
== if_tag.getAttribute("name")):
997
1498
if_tag.appendChild(tag)
998
# Add annotation tags
999
for typ in ("method", "signal", "property"):
1000
for tag in if_tag.getElementsByTagName(typ):
1001
annots = dict()
1002
for name, prop in (self.
1003
_get_all_dbus_things(typ)):
1004
if (name == tag.getAttribute("name")
1005
and prop._dbus_interface
1006
== if_tag.getAttribute("name")):
1007
annots.update(getattr
1008
(prop,
1009
"_dbus_annotations",
1010
{}))
1011
for name, value in annots.iteritems():
1012
ann_tag = document.createElement(
1013
"annotation")
1014
ann_tag.setAttribute("name", name)
1015
ann_tag.setAttribute("value", value)
1016
tag.appendChild(ann_tag)
1017
# Add interface annotation tags
1018
for annotation, value in dict(
1019
itertools.chain.from_iterable(
1020
annotations().iteritems()
1021
for name, annotations in
1022
self._get_all_dbus_things("interface")
1023
if name == if_tag.getAttribute("name")
1024
)).iteritems():
1025
ann_tag = document.createElement("annotation")
1026
ann_tag.setAttribute("name", annotation)
1027
ann_tag.setAttribute("value", value)
1028
if_tag.appendChild(ann_tag)
1499
# Add annotation tags for properties
1500
for tag in if_tag.getElementsByTagName("property"):
1501
annots = dict()
1502
for name, prop in self._get_all_dbus_things(
1503
"property"):
1504
if (name == tag.getAttribute("name")
1505
and prop._dbus_interface
1506
== if_tag.getAttribute("name")):
1507
annots.update(getattr(
1508
prop, "_dbus_annotations", {}))
1509
for name, value in annots.items():
1510
ann_tag = document.createElement(
1511
"annotation")
1512
ann_tag.setAttribute("name", name)
1513
ann_tag.setAttribute("value", value)
1514
tag.appendChild(ann_tag)
1029
1515
# Add the names to the return values for the
1030
1516
# "org.freedesktop.DBus.Properties" methods
1031
1517
if (if_tag.getAttribute("name")
1050
1536
return xmlstring
1051
1537
1052
1538
1539
try:
1540
dbus.OBJECT_MANAGER_IFACE
1541
except AttributeError:
1542
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1543
1544
1545
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1546
"""A D-Bus object with an ObjectManager.
1547
1548
Classes inheriting from this exposes the standard
1549
GetManagedObjects call and the InterfacesAdded and
1550
InterfacesRemoved signals on the standard
1551
"org.freedesktop.DBus.ObjectManager" interface.
1552
1553
Note: No signals are sent automatically; they must be sent
1554
manually.
1555
"""
1556
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1557
out_signature="a{oa{sa{sv}}}")
1558
def GetManagedObjects(self):
1559
"""This function must be overridden"""
1560
raise NotImplementedError()
1561
1562
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1563
signature="oa{sa{sv}}")
1564
def InterfacesAdded(self, object_path, interfaces_and_properties):
1565
pass
1566
1567
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1568
def InterfacesRemoved(self, object_path, interfaces):
1569
pass
1570
1571
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1572
out_signature="s",
1573
path_keyword='object_path',
1574
connection_keyword='connection')
1575
def Introspect(self, object_path, connection):
1576
"""Overloading of standard D-Bus method.
1577
1578
Override return argument name of GetManagedObjects to be
1579
"objpath_interfaces_and_properties"
1580
"""
1581
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1582
object_path,
1583
connection)
1584
try:
1585
document = xml.dom.minidom.parseString(xmlstring)
1586
1587
for if_tag in document.getElementsByTagName("interface"):
1588
# Fix argument name for the GetManagedObjects method
1589
if (if_tag.getAttribute("name")
1590
== dbus.OBJECT_MANAGER_IFACE):
1591
for cn in if_tag.getElementsByTagName("method"):
1592
if (cn.getAttribute("name")
1593
== "GetManagedObjects"):
1594
for arg in cn.getElementsByTagName("arg"):
1595
if (arg.getAttribute("direction")
1596
== "out"):
1597
arg.setAttribute(
1598
"name",
1599
"objpath_interfaces"
1600
"_and_properties")
1601
xmlstring = document.toxml("utf-8")
1602
document.unlink()
1603
except (AttributeError, xml.dom.DOMException,
1604
xml.parsers.expat.ExpatError) as error:
1605
logger.error("Failed to override Introspection method",
1606
exc_info=error)
1607
return xmlstring
1608
1609
1053
1610
def datetime_to_dbus(dt, variant_level=0):
1054
1611
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1055
1612
if dt is None:
1056
return dbus.String("", variant_level = variant_level)
1057
return dbus.String(dt.isoformat(),
1058
variant_level=variant_level)
1613
return dbus.String("", variant_level=variant_level)
1614
return dbus.String(dt.isoformat(), variant_level=variant_level)
1059
1615
1060
1616
1061
1617
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1063
1619
dbus.service.Object, it will add alternate D-Bus attributes with
1064
1620
interface names according to the "alt_interface_names" mapping.
1065
1621
Usage:
1066
1622
1067
1623
@alternate_dbus_interfaces({"org.example.Interface":
1068
1624
"net.example.AlternateInterface"})
1069
1625
class SampleDBusObject(dbus.service.Object):
1070
1626
@dbus.service.method("org.example.Interface")
1071
1627
def SampleDBusMethod():
1072
1628
pass
1073
1629
1074
1630
The above "SampleDBusMethod" on "SampleDBusObject" will be
1075
1631
reachable via two interfaces: "org.example.Interface" and
1076
1632
"net.example.AlternateInterface", the latter of which will have
1077
1633
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1078
1634
"true", unless "deprecate" is passed with a False value.
1079
1635
1080
1636
This works for methods and signals, and also for D-Bus properties
1081
1637
(from DBusObjectWithProperties) and interfaces (from the
1082
1638
dbus_interface_annotations decorator).
1083
1639
"""
1640
1084
1641
def wrapper(cls):
1085
1642
for orig_interface_name, alt_interface_name in (
1086
alt_interface_names.iteritems()):
1643
alt_interface_names.items()):
1087
1644
attr = {}
1088
1645
interface_names = set()
1089
1646
# Go though all attributes of the class
1091
1648
# Ignore non-D-Bus attributes, and D-Bus attributes
1092
1649
# with the wrong interface name
1093
1650
if (not hasattr(attribute, "_dbus_interface")
1094
or not attribute._dbus_interface
1095
.startswith(orig_interface_name)):
1651
or not attribute._dbus_interface.startswith(
1652
orig_interface_name)):
1096
1653
continue
1097
1654
# Create an alternate D-Bus interface name based on
1098
1655
# the current name
1099
alt_interface = (attribute._dbus_interface
1100
.replace(orig_interface_name,
1101
alt_interface_name))
1656
alt_interface = attribute._dbus_interface.replace(
1657
orig_interface_name, alt_interface_name)
1102
1658
interface_names.add(alt_interface)
1103
1659
# Is this a D-Bus signal?
1104
1660
if getattr(attribute, "_dbus_is_signal", False):
1105
1661
# Extract the original non-method undecorated
1106
1662
# function by black magic
1107
nonmethod_func = (dict(
1663
if sys.version_info.major == 2:
1664
nonmethod_func = (dict(
1108
1665
zip(attribute.func_code.co_freevars,
1109
attribute.__closure__))["func"]
1110
.cell_contents)
1666
attribute.__closure__))
1667
["func"].cell_contents)
1668
else:
1669
nonmethod_func = (dict(
1670
zip(attribute.__code__.co_freevars,
1671
attribute.__closure__))
1672
["func"].cell_contents)
1111
1673
# Create a new, but exactly alike, function
1112
1674
# object, and decorate it to be a new D-Bus signal
1113
1675
# with the alternate D-Bus interface name
1114
new_function = (dbus.service.signal
1115
(alt_interface,
1116
attribute._dbus_signature)
1117
(types.FunctionType(
1118
nonmethod_func.func_code,
1119
nonmethod_func.func_globals,
1120
nonmethod_func.func_name,
1121
nonmethod_func.func_defaults,
1122
nonmethod_func.func_closure)))
1676
new_function = copy_function(nonmethod_func)
1677
new_function = (dbus.service.signal(
1678
alt_interface,
1679
attribute._dbus_signature)(new_function))
1123
1680
# Copy annotations, if any
1124
1681
try:
1125
new_function._dbus_annotations = (
1126
dict(attribute._dbus_annotations))
1682
new_function._dbus_annotations = dict(
1683
attribute._dbus_annotations)
1127
1684
except AttributeError:
1128
1685
pass
1686
1129
1687
# Define a creator of a function to call both the
1130
1688
# original and alternate functions, so both the
1131
1689
# original and alternate signals gets sent when
1134
1692
"""This function is a scope container to pass
1135
1693
func1 and func2 to the "call_both" function
1136
1694
outside of its arguments"""
1695
1696
@functools.wraps(func2)
1137
1697
def call_both(*args, **kwargs):
1138
1698
"""This function will emit two D-Bus
1139
1699
signals by calling func1 and func2"""
1140
1700
func1(*args, **kwargs)
1141
1701
func2(*args, **kwargs)
1702
# Make wrapper function look like a D-Bus
1703
# signal
1704
for name, attr in inspect.getmembers(func2):
1705
if name.startswith("_dbus_"):
1706
setattr(call_both, name, attr)
1707
1142
1708
return call_both
1143
1709
# Create the "call_both" function and add it to
1144
1710
# the class
1149
1715
# object. Decorate it to be a new D-Bus method
1150
1716
# with the alternate D-Bus interface name. Add it
1151
1717
# to the class.
1152
attr[attrname] = (dbus.service.method
1153
(alt_interface,
1154
attribute._dbus_in_signature,
1155
attribute._dbus_out_signature)
1156
(types.FunctionType
1157
(attribute.func_code,
1158
attribute.func_globals,
1159
attribute.func_name,
1160
attribute.func_defaults,
1161
attribute.func_closure)))
1718
attr[attrname] = (
1719
dbus.service.method(
1720
alt_interface,
1721
attribute._dbus_in_signature,
1722
attribute._dbus_out_signature)
1723
(copy_function(attribute)))
1162
1724
# Copy annotations, if any
1163
1725
try:
1164
attr[attrname]._dbus_annotations = (
1165
dict(attribute._dbus_annotations))
1726
attr[attrname]._dbus_annotations = dict(
1727
attribute._dbus_annotations)
1166
1728
except AttributeError:
1167
1729
pass
1168
1730
# Is this a D-Bus property?
1171
1733
# object, and decorate it to be a new D-Bus
1172
1734
# property with the alternate D-Bus interface
1173
1735
# name. Add it to the class.
1174
attr[attrname] = (dbus_service_property
1175
(alt_interface,
1176
attribute._dbus_signature,
1177
attribute._dbus_access,
1178
attribute
1179
._dbus_get_args_options
1180
["byte_arrays"])
1181
(types.FunctionType
1182
(attribute.func_code,
1183
attribute.func_globals,
1184
attribute.func_name,
1185
attribute.func_defaults,
1186
attribute.func_closure)))
1736
attr[attrname] = (dbus_service_property(
1737
alt_interface, attribute._dbus_signature,
1738
attribute._dbus_access,
1739
attribute._dbus_get_args_options
1740
["byte_arrays"])
1741
(copy_function(attribute)))
1187
1742
# Copy annotations, if any
1188
1743
try:
1189
attr[attrname]._dbus_annotations = (
1190
dict(attribute._dbus_annotations))
1744
attr[attrname]._dbus_annotations = dict(
1745
attribute._dbus_annotations)
1191
1746
except AttributeError:
1192
1747
pass
1193
1748
# Is this a D-Bus interface?
1196
1751
# object. Decorate it to be a new D-Bus interface
1197
1752
# with the alternate D-Bus interface name. Add it
1198
1753
# to the class.
1199
attr[attrname] = (dbus_interface_annotations
1200
(alt_interface)
1201
(types.FunctionType
1202
(attribute.func_code,
1203
attribute.func_globals,
1204
attribute.func_name,
1205
attribute.func_defaults,
1206
attribute.func_closure)))
1754
attr[attrname] = (
1755
dbus_interface_annotations(alt_interface)
1756
(copy_function(attribute)))
1207
1757
if deprecate:
1208
1758
# Deprecate all alternate interfaces
1209
iname="_AlternateDBusNames_interface_annotation{0}"
1759
iname = "_AlternateDBusNames_interface_annotation{}"
1210
1760
for interface_name in interface_names:
1761
1211
1762
@dbus_interface_annotations(interface_name)
1212
1763
def func(self):
1213
return { "org.freedesktop.DBus.Deprecated":
1214
"true" }
1764
return {"org.freedesktop.DBus.Deprecated":
1765
"true"}
1215
1766
# Find an unused name
1216
1767
for aname in (iname.format(i)
1217
1768
for i in itertools.count()):
1221
1772
if interface_names:
1222
1773
# Replace the class with a new subclass of it with
1223
1774
# methods, signals, etc. as created above.
1224
cls = type(b"{0}Alternate".format(cls.__name__),
1225
(cls,), attr)
1775
if sys.version_info.major == 2:
1776
cls = type(b"{}Alternate".format(cls.__name__),
1777
(cls, ), attr)
1778
else:
1779
cls = type("{}Alternate".format(cls.__name__),
1780
(cls, ), attr)
1226
1781
return cls
1782
1227
1783
return wrapper
1228
1784
1229
1785
1230
1786
@alternate_dbus_interfaces({"se.recompile.Mandos":
1231
"se.bsnet.fukt.Mandos"})
1787
"se.bsnet.fukt.Mandos"})
1232
1788
class ClientDBus(Client, DBusObjectWithProperties):
1233
1789
"""A Client class using D-Bus
1234
1790
1235
1791
Attributes:
1236
1792
dbus_object_path: dbus.ObjectPath
1237
1793
bus: dbus.SystemBus()
1238
1794
"""
1239
1795
1240
1796
runtime_expansions = (Client.runtime_expansions
1241
+ ("dbus_object_path",))
1242
1797
+ ("dbus_object_path", ))
1798
1799
_interface = "se.recompile.Mandos.Client"
1800
1243
1801
# dbus.service.Object doesn't use super(), so we can't either.
1244
1245
def __init__(self, bus = None, *args, **kwargs):
1802
1803
def __init__(self, bus=None, *args, **kwargs):
1246
1804
self.bus = bus
1247
1805
Client.__init__(self, *args, **kwargs)
1248
1806
# Only now, when this client is initialized, can it show up on
1249
1807
# the D-Bus
1250
client_object_name = unicode(self.name).translate(
1808
client_object_name = str(self.name).translate(
1251
1809
{ord("."): ord("_"),
1252
1810
ord("-"): ord("_")})
1253
self.dbus_object_path = (dbus.ObjectPath
1254
("/clients/" + client_object_name))
1811
self.dbus_object_path = dbus.ObjectPath(
1812
"/clients/" + client_object_name)
1255
1813
DBusObjectWithProperties.__init__(self, self.bus,
1256
1814
self.dbus_object_path)
1257
1258
def notifychangeproperty(transform_func,
1259
dbus_name, type_func=lambda x: x,
1260
variant_level=1):
1815
1816
def notifychangeproperty(transform_func, dbus_name,
1817
type_func=lambda x: x,
1818
variant_level=1,
1819
invalidate_only=False,
1820
_interface=_interface):
1261
1821
""" Modify a variable so that it's a property which announces
1262
1822
its changes to DBus.
1263
1823
1264
1824
transform_fun: Function that takes a value and a variant_level
1265
1825
and transforms it to a D-Bus type.
1266
1826
dbus_name: D-Bus name of the variable
1268
1828
to the D-Bus. Default: no transform
1269
1829
variant_level: D-Bus variant level. Default: 1
1270
1830
"""
1271
attrname = "_{0}".format(dbus_name)
1831
attrname = "_{}".format(dbus_name)
1832
1272
1833
def setter(self, value):
1273
1834
if hasattr(self, "dbus_object_path"):
1274
1835
if (not hasattr(self, attrname) or
1275
1836
type_func(getattr(self, attrname, None))
1276
1837
!= type_func(value)):
1277
dbus_value = transform_func(type_func(value),
1278
variant_level
1279
=variant_level)
1280
self.PropertyChanged(dbus.String(dbus_name),
1281
dbus_value)
1838
if invalidate_only:
1839
self.PropertiesChanged(
1840
_interface, dbus.Dictionary(),
1841
dbus.Array((dbus_name, )))
1842
else:
1843
dbus_value = transform_func(
1844
type_func(value),
1845
variant_level=variant_level)
1846
self.PropertyChanged(dbus.String(dbus_name),
1847
dbus_value)
1848
self.PropertiesChanged(
1849
_interface,
1850
dbus.Dictionary({dbus.String(dbus_name):
1851
dbus_value}),
1852
dbus.Array())
1282
1853
setattr(self, attrname, value)
1283
1854
1284
1855
return property(lambda self: getattr(self, attrname), setter)
1285
1856
1286
1857
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1287
1858
approvals_pending = notifychangeproperty(dbus.Boolean,
1288
1859
"ApprovalPending",
1289
type_func = bool)
1860
type_func=bool)
1290
1861
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1291
1862
last_enabled = notifychangeproperty(datetime_to_dbus,
1292
1863
"LastEnabled")
1293
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1294
type_func = lambda checker:
1295
checker is not None)
1864
checker = notifychangeproperty(
1865
dbus.Boolean, "CheckerRunning",
1866
type_func=lambda checker: checker is not None)
1296
1867
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1297
1868
"LastCheckedOK")
1298
1869
last_checker_status = notifychangeproperty(dbus.Int16,
1301
1872
datetime_to_dbus, "LastApprovalRequest")
1302
1873
approved_by_default = notifychangeproperty(dbus.Boolean,
1303
1874
"ApprovedByDefault")
1304
approval_delay = notifychangeproperty(dbus.UInt64,
1305
"ApprovalDelay",
1306
type_func =
1307
timedelta_to_milliseconds)
1875
approval_delay = notifychangeproperty(
1876
dbus.UInt64, "ApprovalDelay",
1877
type_func=lambda td: td.total_seconds() * 1000)
1308
1878
approval_duration = notifychangeproperty(
1309
1879
dbus.UInt64, "ApprovalDuration",
1310
type_func = timedelta_to_milliseconds)
1880
type_func=lambda td: td.total_seconds() * 1000)
1311
1881
host = notifychangeproperty(dbus.String, "Host")
1312
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1313
type_func =
1314
timedelta_to_milliseconds)
1882
timeout = notifychangeproperty(
1883
dbus.UInt64, "Timeout",
1884
type_func=lambda td: td.total_seconds() * 1000)
1315
1885
extended_timeout = notifychangeproperty(
1316
1886
dbus.UInt64, "ExtendedTimeout",
1317
type_func = timedelta_to_milliseconds)
1318
interval = notifychangeproperty(dbus.UInt64,
1319
"Interval",
1320
type_func =
1321
timedelta_to_milliseconds)
1887
type_func=lambda td: td.total_seconds() * 1000)
1888
interval = notifychangeproperty(
1889
dbus.UInt64, "Interval",
1890
type_func=lambda td: td.total_seconds() * 1000)
1322
1891
checker_command = notifychangeproperty(dbus.String, "Checker")
1323
1892
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1893
invalidate_only=True)
1894
1324
1895
del notifychangeproperty
1325
1896
1326
1897
def __del__(self, *args, **kwargs):
1327
1898
try:
1328
1899
self.remove_from_connection()
1331
1902
if hasattr(DBusObjectWithProperties, "__del__"):
1332
1903
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1333
1904
Client.__del__(self, *args, **kwargs)
1334
1335
def checker_callback(self, pid, condition, command,
1336
*args, **kwargs):
1337
self.checker_callback_tag = None
1338
self.checker = None
1339
if os.WIFEXITED(condition):
1340
exitstatus = os.WEXITSTATUS(condition)
1905
1906
def checker_callback(self, source, condition,
1907
connection, command, *args, **kwargs):
1908
ret = Client.checker_callback(self, source, condition,
1909
connection, command, *args,
1910
**kwargs)
1911
exitstatus = self.last_checker_status
1912
if exitstatus >= 0:
1341
1913
# Emit D-Bus signal
1342
1914
self.CheckerCompleted(dbus.Int16(exitstatus),
1343
dbus.Int64(condition),
1915
# This is specific to GNU libC
1916
dbus.Int64(exitstatus << 8),
1344
1917
dbus.String(command))
1345
1918
else:
1346
1919
# Emit D-Bus signal
1347
1920
self.CheckerCompleted(dbus.Int16(-1),
1348
dbus.Int64(condition),
1921
dbus.Int64(
1922
# This is specific to GNU libC
1923
(exitstatus << 8)
1924
| self.last_checker_signal),
1349
1925
dbus.String(command))
1350
1351
return Client.checker_callback(self, pid, condition, command,
1352
*args, **kwargs)
1353
1926
return ret
1927
1354
1928
def start_checker(self, *args, **kwargs):
1355
1929
old_checker_pid = getattr(self.checker, "pid", None)
1356
1930
r = Client.start_checker(self, *args, **kwargs)
1360
1934
# Emit D-Bus signal
1361
1935
self.CheckerStarted(self.current_checker_command)
1362
1936
return r
1363
1937
1364
1938
def _reset_approved(self):
1365
1939
self.approved = None
1366
1940
return False
1367
1941
1368
1942
def approve(self, value=True):
1369
1943
self.approved = value
1370
gobject.timeout_add(timedelta_to_milliseconds
1371
(self.approval_duration),
1372
self._reset_approved)
1944
GLib.timeout_add(int(self.approval_duration.total_seconds()
1945
* 1000), self._reset_approved)
1373
1946
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
1947
1948
# D-Bus methods, signals & properties
1949
1950
# Interfaces
1951
1952
# Signals
1953
1387
1954
# CheckerCompleted - signal
1388
1955
@dbus.service.signal(_interface, signature="nxs")
1389
1956
def CheckerCompleted(self, exitcode, waitstatus, command):
1390
1957
"D-Bus signal"
1391
1958
pass
1392
1959
1393
1960
# CheckerStarted - signal
1394
1961
@dbus.service.signal(_interface, signature="s")
1395
1962
def CheckerStarted(self, command):
1396
1963
"D-Bus signal"
1397
1964
pass
1398
1965
1399
1966
# PropertyChanged - signal
1967
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1400
1968
@dbus.service.signal(_interface, signature="sv")
1401
1969
def PropertyChanged(self, property, value):
1402
1970
"D-Bus signal"
1403
1971
pass
1404
1972
1405
1973
# GotSecret - signal
1406
1974
@dbus.service.signal(_interface)
1407
1975
def GotSecret(self):
1410
1978
server to mandos-client
1411
1979
"""
1412
1980
pass
1413
1981
1414
1982
# Rejected - signal
1415
1983
@dbus.service.signal(_interface, signature="s")
1416
1984
def Rejected(self, reason):
1417
1985
"D-Bus signal"
1418
1986
pass
1419
1987
1420
1988
# NeedApproval - signal
1421
1989
@dbus.service.signal(_interface, signature="tb")
1422
1990
def NeedApproval(self, timeout, default):
1423
1991
"D-Bus signal"
1424
1992
return self.need_approval()
1425
1426
## Methods
1427
1993
1994
# Methods
1995
1428
1996
# Approve - method
1429
1997
@dbus.service.method(_interface, in_signature="b")
1430
1998
def Approve(self, value):
1431
1999
self.approve(value)
1432
2000
1433
2001
# CheckedOK - method
1434
2002
@dbus.service.method(_interface)
1435
2003
def CheckedOK(self):
1436
2004
self.checked_ok()
1437
2005
1438
2006
# Enable - method
2007
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1439
2008
@dbus.service.method(_interface)
1440
2009
def Enable(self):
1441
2010
"D-Bus method"
1442
2011
self.enable()
1443
2012
1444
2013
# StartChecker - method
2014
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1445
2015
@dbus.service.method(_interface)
1446
2016
def StartChecker(self):
1447
2017
"D-Bus method"
1448
2018
self.start_checker()
1449
2019
1450
2020
# Disable - method
2021
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1451
2022
@dbus.service.method(_interface)
1452
2023
def Disable(self):
1453
2024
"D-Bus method"
1454
2025
self.disable()
1455
2026
1456
2027
# StopChecker - method
2028
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1457
2029
@dbus.service.method(_interface)
1458
2030
def StopChecker(self):
1459
2031
self.stop_checker()
1460
1461
## Properties
1462
2032
2033
# Properties
2034
1463
2035
# ApprovalPending - property
1464
2036
@dbus_service_property(_interface, signature="b", access="read")
1465
2037
def ApprovalPending_dbus_property(self):
1466
2038
return dbus.Boolean(bool(self.approvals_pending))
1467
2039
1468
2040
# ApprovedByDefault - property
1469
@dbus_service_property(_interface, signature="b",
2041
@dbus_service_property(_interface,
2042
signature="b",
1470
2043
access="readwrite")
1471
2044
def ApprovedByDefault_dbus_property(self, value=None):
1472
2045
if value is None: # get
1473
2046
return dbus.Boolean(self.approved_by_default)
1474
2047
self.approved_by_default = bool(value)
1475
2048
1476
2049
# ApprovalDelay - property
1477
@dbus_service_property(_interface, signature="t",
2050
@dbus_service_property(_interface,
2051
signature="t",
1478
2052
access="readwrite")
1479
2053
def ApprovalDelay_dbus_property(self, value=None):
1480
2054
if value is None: # get
1481
return dbus.UInt64(self.approval_delay_milliseconds())
2055
return dbus.UInt64(self.approval_delay.total_seconds()
2056
* 1000)
1482
2057
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1483
2058
1484
2059
# ApprovalDuration - property
1485
@dbus_service_property(_interface, signature="t",
2060
@dbus_service_property(_interface,
2061
signature="t",
1486
2062
access="readwrite")
1487
2063
def ApprovalDuration_dbus_property(self, value=None):
1488
2064
if value is None: # get
1489
return dbus.UInt64(timedelta_to_milliseconds(
1490
self.approval_duration))
2065
return dbus.UInt64(self.approval_duration.total_seconds()
2066
* 1000)
1491
2067
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1492
2068
1493
2069
# Name - property
2070
@dbus_annotations(
2071
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1494
2072
@dbus_service_property(_interface, signature="s", access="read")
1495
2073
def Name_dbus_property(self):
1496
2074
return dbus.String(self.name)
1497
2075
2076
# KeyID - property
2077
@dbus_annotations(
2078
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2079
@dbus_service_property(_interface, signature="s", access="read")
2080
def KeyID_dbus_property(self):
2081
return dbus.String(self.key_id)
2082
1498
2083
# Fingerprint - property
2084
@dbus_annotations(
2085
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1499
2086
@dbus_service_property(_interface, signature="s", access="read")
1500
2087
def Fingerprint_dbus_property(self):
1501
2088
return dbus.String(self.fingerprint)
1502
2089
1503
2090
# Host - property
1504
@dbus_service_property(_interface, signature="s",
2091
@dbus_service_property(_interface,
2092
signature="s",
1505
2093
access="readwrite")
1506
2094
def Host_dbus_property(self, value=None):
1507
2095
if value is None: # get
1508
2096
return dbus.String(self.host)
1509
self.host = unicode(value)
1510
2097
self.host = str(value)
2098
1511
2099
# Created - property
2100
@dbus_annotations(
2101
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1512
2102
@dbus_service_property(_interface, signature="s", access="read")
1513
2103
def Created_dbus_property(self):
1514
2104
return datetime_to_dbus(self.created)
1515
2105
1516
2106
# LastEnabled - property
1517
2107
@dbus_service_property(_interface, signature="s", access="read")
1518
2108
def LastEnabled_dbus_property(self):
1519
2109
return datetime_to_dbus(self.last_enabled)
1520
2110
1521
2111
# Enabled - property
1522
@dbus_service_property(_interface, signature="b",
2112
@dbus_service_property(_interface,
2113
signature="b",
1523
2114
access="readwrite")
1524
2115
def Enabled_dbus_property(self, value=None):
1525
2116
if value is None: # get
1528
2119
self.enable()
1529
2120
else:
1530
2121
self.disable()
1531
2122
1532
2123
# LastCheckedOK - property
1533
@dbus_service_property(_interface, signature="s",
2124
@dbus_service_property(_interface,
2125
signature="s",
1534
2126
access="readwrite")
1535
2127
def LastCheckedOK_dbus_property(self, value=None):
1536
2128
if value is not None:
1537
2129
self.checked_ok()
1538
2130
return
1539
2131
return datetime_to_dbus(self.last_checked_ok)
1540
2132
1541
2133
# LastCheckerStatus - property
1542
@dbus_service_property(_interface, signature="n",
1543
access="read")
2134
@dbus_service_property(_interface, signature="n", access="read")
1544
2135
def LastCheckerStatus_dbus_property(self):
1545
2136
return dbus.Int16(self.last_checker_status)
1546
2137
1547
2138
# Expires - property
1548
2139
@dbus_service_property(_interface, signature="s", access="read")
1549
2140
def Expires_dbus_property(self):
1550
2141
return datetime_to_dbus(self.expires)
1551
2142
1552
2143
# LastApprovalRequest - property
1553
2144
@dbus_service_property(_interface, signature="s", access="read")
1554
2145
def LastApprovalRequest_dbus_property(self):
1555
2146
return datetime_to_dbus(self.last_approval_request)
1556
2147
1557
2148
# Timeout - property
1558
@dbus_service_property(_interface, signature="t",
2149
@dbus_service_property(_interface,
2150
signature="t",
1559
2151
access="readwrite")
1560
2152
def Timeout_dbus_property(self, value=None):
1561
2153
if value is None: # get
1562
return dbus.UInt64(self.timeout_milliseconds())
2154
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1563
2155
old_timeout = self.timeout
1564
2156
self.timeout = datetime.timedelta(0, 0, 0, value)
1565
2157
# Reschedule disabling
1573
2165
if (getattr(self, "disable_initiator_tag", None)
1574
2166
is None):
1575
2167
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
2168
GLib.source_remove(self.disable_initiator_tag)
2169
self.disable_initiator_tag = GLib.timeout_add(
2170
int((self.expires - now).total_seconds() * 1000),
2171
self.disable)
2172
1582
2173
# ExtendedTimeout - property
1583
@dbus_service_property(_interface, signature="t",
2174
@dbus_service_property(_interface,
2175
signature="t",
1584
2176
access="readwrite")
1585
2177
def ExtendedTimeout_dbus_property(self, value=None):
1586
2178
if value is None: # get
1587
return dbus.UInt64(self.extended_timeout_milliseconds())
2179
return dbus.UInt64(self.extended_timeout.total_seconds()
2180
* 1000)
1588
2181
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1589
2182
1590
2183
# Interval - property
1591
@dbus_service_property(_interface, signature="t",
2184
@dbus_service_property(_interface,
2185
signature="t",
1592
2186
access="readwrite")
1593
2187
def Interval_dbus_property(self, value=None):
1594
2188
if value is None: # get
1595
return dbus.UInt64(self.interval_milliseconds())
2189
return dbus.UInt64(self.interval.total_seconds() * 1000)
1596
2190
self.interval = datetime.timedelta(0, 0, 0, value)
1597
2191
if getattr(self, "checker_initiator_tag", None) is None:
1598
2192
return
1599
2193
if self.enabled:
1600
2194
# 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
2195
GLib.source_remove(self.checker_initiator_tag)
2196
self.checker_initiator_tag = GLib.timeout_add(
2197
value, self.start_checker)
2198
self.start_checker() # Start one now, too
2199
1606
2200
# Checker - property
1607
@dbus_service_property(_interface, signature="s",
2201
@dbus_service_property(_interface,
2202
signature="s",
1608
2203
access="readwrite")
1609
2204
def Checker_dbus_property(self, value=None):
1610
2205
if value is None: # get
1611
2206
return dbus.String(self.checker_command)
1612
self.checker_command = unicode(value)
1613
2207
self.checker_command = str(value)
2208
1614
2209
# CheckerRunning - property
1615
@dbus_service_property(_interface, signature="b",
2210
@dbus_service_property(_interface,
2211
signature="b",
1616
2212
access="readwrite")
1617
2213
def CheckerRunning_dbus_property(self, value=None):
1618
2214
if value is None: # get
1621
2217
self.start_checker()
1622
2218
else:
1623
2219
self.stop_checker()
1624
2220
1625
2221
# ObjectPath - property
2222
@dbus_annotations(
2223
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2224
"org.freedesktop.DBus.Deprecated": "true"})
1626
2225
@dbus_service_property(_interface, signature="o", access="read")
1627
2226
def ObjectPath_dbus_property(self):
1628
return self.dbus_object_path # is already a dbus.ObjectPath
1629
2227
return self.dbus_object_path # is already a dbus.ObjectPath
2228
1630
2229
# Secret = property
1631
@dbus_service_property(_interface, signature="ay",
1632
access="write", byte_arrays=True)
2230
@dbus_annotations(
2231
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2232
"invalidates"})
2233
@dbus_service_property(_interface,
2234
signature="ay",
2235
access="write",
2236
byte_arrays=True)
1633
2237
def Secret_dbus_property(self, value):
1634
self.secret = str(value)
1635
2238
self.secret = bytes(value)
2239
1636
2240
del _interface
1637
2241
1638
2242
1639
class ProxyClient(object):
1640
def __init__(self, child_pipe, fpr, address):
2243
class ProxyClient:
2244
def __init__(self, child_pipe, key_id, fpr, address):
1641
2245
self._pipe = child_pipe
1642
self._pipe.send(('init', fpr, address))
2246
self._pipe.send(('init', key_id, fpr, address))
1643
2247
if not self._pipe.recv():
1644
raise KeyError()
1645
2248
raise KeyError(key_id or fpr)
2249
1646
2250
def __getattribute__(self, name):
1647
2251
if name == '_pipe':
1648
2252
return super(ProxyClient, self).__getattribute__(name)
1651
2255
if data[0] == 'data':
1652
2256
return data[1]
1653
2257
if data[0] == 'function':
2258
1654
2259
def func(*args, **kwargs):
1655
2260
self._pipe.send(('funcall', name, args, kwargs))
1656
2261
return self._pipe.recv()[1]
2262
1657
2263
return func
1658
2264
1659
2265
def __setattr__(self, name, value):
1660
2266
if name == '_pipe':
1661
2267
return super(ProxyClient, self).__setattr__(name, value)
1664
2270
1665
2271
class ClientHandler(socketserver.BaseRequestHandler, object):
1666
2272
"""A class to handle client connections.
1667
2273
1668
2274
Instantiated once for each connection to handle it.
1669
2275
Note: This will run in its own forked process."""
1670
2276
1671
2277
def handle(self):
1672
2278
with contextlib.closing(self.server.child_pipe) as child_pipe:
1673
2279
logger.info("TCP connection from: %s",
1674
unicode(self.client_address))
2280
str(self.client_address))
1675
2281
logger.debug("Pipe FD: %d",
1676
2282
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"))
2283
2284
session = gnutls.ClientSession(self.request)
2285
2286
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2287
# "+AES-256-CBC", "+SHA1",
2288
# "+COMP-NULL", "+CTYPE-OPENPGP",
2289
# "+DHE-DSS"))
1692
2290
# Use a fallback default, since this MUST be set.
1693
2291
priority = self.server.gnutls_priority
1694
2292
if priority is None:
1695
2293
priority = "NORMAL"
1696
(gnutls.library.functions
1697
.gnutls_priority_set_direct(session._c_object,
1698
priority, None))
1699
2294
gnutls.priority_set_direct(session._c_object,
2295
priority.encode("utf-8"),
2296
None)
2297
1700
2298
# Start communication using the Mandos protocol
1701
2299
# Get protocol number
1702
2300
line = self.request.makefile().readline()
1707
2305
except (ValueError, IndexError, RuntimeError) as error:
1708
2306
logger.error("Unknown protocol version: %s", error)
1709
2307
return
1710
2308
1711
2309
# Start GnuTLS connection
1712
2310
try:
1713
2311
session.handshake()
1714
except gnutls.errors.GNUTLSError as error:
2312
except gnutls.Error as error:
1715
2313
logger.warning("Handshake failed: %s", error)
1716
2314
# Do not run session.bye() here: the session is not
1717
2315
# established. Just abandon the request.
1718
2316
return
1719
2317
logger.debug("Handshake succeeded")
1720
2318
1721
2319
approval_required = False
1722
2320
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,
2321
if gnutls.has_rawpk:
2322
fpr = b""
2323
try:
2324
key_id = self.key_id(
2325
self.peer_certificate(session))
2326
except (TypeError, gnutls.Error) as error:
2327
logger.warning("Bad certificate: %s", error)
2328
return
2329
logger.debug("Key ID: %s", key_id)
2330
2331
else:
2332
key_id = b""
2333
try:
2334
fpr = self.fingerprint(
2335
self.peer_certificate(session))
2336
except (TypeError, gnutls.Error) as error:
2337
logger.warning("Bad certificate: %s", error)
2338
return
2339
logger.debug("Fingerprint: %s", fpr)
2340
2341
try:
2342
client = ProxyClient(child_pipe, key_id, fpr,
1734
2343
self.client_address)
1735
2344
except KeyError:
1736
2345
return
1737
2346
1738
2347
if client.approval_delay:
1739
2348
delay = client.approval_delay
1740
2349
client.approvals_pending += 1
1741
2350
approval_required = True
1742
2351
1743
2352
while True:
1744
2353
if not client.enabled:
1745
2354
logger.info("Client %s is disabled",
1746
client.name)
2355
client.name)
1747
2356
if self.server.use_dbus:
1748
2357
# Emit D-Bus signal
1749
2358
client.Rejected("Disabled")
1750
2359
return
1751
2360
1752
2361
if client.approved or not client.approval_delay:
1753
#We are approved or approval is disabled
2362
# We are approved or approval is disabled
1754
2363
break
1755
2364
elif client.approved is None:
1756
2365
logger.info("Client %s needs approval",
1758
2367
if self.server.use_dbus:
1759
2368
# Emit D-Bus signal
1760
2369
client.NeedApproval(
1761
client.approval_delay_milliseconds(),
1762
client.approved_by_default)
2370
client.approval_delay.total_seconds()
2371
* 1000, client.approved_by_default)
1763
2372
else:
1764
2373
logger.warning("Client %s was not approved",
1765
2374
client.name)
1767
2376
# Emit D-Bus signal
1768
2377
client.Rejected("Denied")
1769
2378
return
1770
1771
#wait until timeout or approved
2379
2380
# wait until timeout or approved
1772
2381
time = datetime.datetime.now()
1773
2382
client.changedstate.acquire()
1774
client.changedstate.wait(
1775
float(timedelta_to_milliseconds(delay)
1776
/ 1000))
2383
client.changedstate.wait(delay.total_seconds())
1777
2384
client.changedstate.release()
1778
2385
time2 = datetime.datetime.now()
1779
2386
if (time2 - time) >= delay:
1789
2396
break
1790
2397
else:
1791
2398
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
2399
2400
try:
2401
session.send(client.secret)
2402
except gnutls.Error as error:
2403
logger.warning("gnutls send failed",
2404
exc_info=error)
2405
return
2406
1806
2407
logger.info("Sending secret to %s", client.name)
1807
2408
# bump the timeout using extended_timeout
1808
2409
client.bump_timeout(client.extended_timeout)
1809
2410
if self.server.use_dbus:
1810
2411
# Emit D-Bus signal
1811
2412
client.GotSecret()
1812
2413
1813
2414
finally:
1814
2415
if approval_required:
1815
2416
client.approvals_pending -= 1
1816
2417
try:
1817
2418
session.bye()
1818
except gnutls.errors.GNUTLSError as error:
2419
except gnutls.Error as error:
1819
2420
logger.warning("GnuTLS bye failed",
1820
2421
exc_info=error)
1821
2422
1822
2423
@staticmethod
1823
2424
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
2425
"Return the peer's certificate as a bytestring"
2426
try:
2427
cert_type = gnutls.certificate_type_get2(session._c_object,
2428
gnutls.CTYPE_PEERS)
2429
except AttributeError:
2430
cert_type = gnutls.certificate_type_get(session._c_object)
2431
if gnutls.has_rawpk:
2432
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2433
else:
2434
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2435
# If not a valid certificate type...
2436
if cert_type not in valid_cert_types:
2437
logger.info("Cert type %r not in %r", cert_type,
2438
valid_cert_types)
2439
# ...return invalid data
2440
return b""
1831
2441
list_size = ctypes.c_uint(1)
1832
cert_list = (gnutls.library.functions
1833
.gnutls_certificate_get_peers
2442
cert_list = (gnutls.certificate_get_peers
1834
2443
(session._c_object, ctypes.byref(list_size)))
1835
2444
if not bool(cert_list) and list_size.value != 0:
1836
raise gnutls.errors.GNUTLSError("error getting peer"
1837
" certificate")
2445
raise gnutls.Error("error getting peer certificate")
1838
2446
if list_size.value == 0:
1839
2447
return None
1840
2448
cert = cert_list[0]
1841
2449
return ctypes.string_at(cert.data, cert.size)
1842
2450
2451
@staticmethod
2452
def key_id(certificate):
2453
"Convert a certificate bytestring to a hexdigit key ID"
2454
# New GnuTLS "datum" with the public key
2455
datum = gnutls.datum_t(
2456
ctypes.cast(ctypes.c_char_p(certificate),
2457
ctypes.POINTER(ctypes.c_ubyte)),
2458
ctypes.c_uint(len(certificate)))
2459
# XXX all these need to be created in the gnutls "module"
2460
# New empty GnuTLS certificate
2461
pubkey = gnutls.pubkey_t()
2462
gnutls.pubkey_init(ctypes.byref(pubkey))
2463
# Import the raw public key into the certificate
2464
gnutls.pubkey_import(pubkey,
2465
ctypes.byref(datum),
2466
gnutls.X509_FMT_DER)
2467
# New buffer for the key ID
2468
buf = ctypes.create_string_buffer(32)
2469
buf_len = ctypes.c_size_t(len(buf))
2470
# Get the key ID from the raw public key into the buffer
2471
gnutls.pubkey_get_key_id(pubkey,
2472
gnutls.KEYID_USE_SHA256,
2473
ctypes.cast(ctypes.byref(buf),
2474
ctypes.POINTER(ctypes.c_ubyte)),
2475
ctypes.byref(buf_len))
2476
# Deinit the certificate
2477
gnutls.pubkey_deinit(pubkey)
2478
2479
# Convert the buffer to a Python bytestring
2480
key_id = ctypes.string_at(buf, buf_len.value)
2481
# Convert the bytestring to hexadecimal notation
2482
hex_key_id = binascii.hexlify(key_id).upper()
2483
return hex_key_id
2484
1843
2485
@staticmethod
1844
2486
def fingerprint(openpgp):
1845
2487
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1846
2488
# 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))))
2489
datum = gnutls.datum_t(
2490
ctypes.cast(ctypes.c_char_p(openpgp),
2491
ctypes.POINTER(ctypes.c_ubyte)),
2492
ctypes.c_uint(len(openpgp)))
1852
2493
# 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)))
2494
crt = gnutls.openpgp_crt_t()
2495
gnutls.openpgp_crt_init(ctypes.byref(crt))
1856
2496
# 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))
2497
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2498
gnutls.OPENPGP_FMT_RAW)
1861
2499
# Verify the self signature in the key
1862
2500
crtverify = ctypes.c_uint()
1863
(gnutls.library.functions
1864
.gnutls_openpgp_crt_verify_self(crt, 0,
1865
ctypes.byref(crtverify)))
2501
gnutls.openpgp_crt_verify_self(crt, 0,
2502
ctypes.byref(crtverify))
1866
2503
if crtverify.value != 0:
1867
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1868
raise (gnutls.errors.CertificateSecurityError
1869
("Verify failed"))
2504
gnutls.openpgp_crt_deinit(crt)
2505
raise gnutls.CertificateSecurityError(code
2506
=crtverify.value)
1870
2507
# New buffer for the fingerprint
1871
2508
buf = ctypes.create_string_buffer(20)
1872
2509
buf_len = ctypes.c_size_t()
1873
2510
# 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)))
2511
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2512
ctypes.byref(buf_len))
1877
2513
# Deinit the certificate
1878
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2514
gnutls.openpgp_crt_deinit(crt)
1879
2515
# Convert the buffer to a Python bytestring
1880
2516
fpr = ctypes.string_at(buf, buf_len.value)
1881
2517
# Convert the bytestring to hexadecimal notation
1883
2519
return hex_fpr
1884
2520
1885
2521
1886
class MultiprocessingMixIn(object):
2522
class MultiprocessingMixIn:
1887
2523
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2524
1888
2525
def sub_process_main(self, request, address):
1889
2526
try:
1890
2527
self.finish_request(request, address)
1891
2528
except Exception:
1892
2529
self.handle_error(request, address)
1893
2530
self.close_request(request)
1894
2531
1895
2532
def process_request(self, request, address):
1896
2533
"""Start a new process to process the request."""
1897
proc = multiprocessing.Process(target = self.sub_process_main,
1898
args = (request, address))
2534
proc = multiprocessing.Process(target=self.sub_process_main,
2535
args=(request, address))
1899
2536
proc.start()
1900
2537
return proc
1901
2538
1902
2539
1903
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2540
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1904
2541
""" adds a pipe to the MixIn """
2542
1905
2543
def process_request(self, request, client_address):
1906
2544
"""Overrides and wraps the original process_request().
1907
2545
1908
2546
This function creates a new pipe in self.pipe
1909
2547
"""
1910
2548
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1911
2549
1912
2550
proc = MultiprocessingMixIn.process_request(self, request,
1913
2551
client_address)
1914
2552
self.child_pipe.close()
1915
2553
self.add_pipe(parent_pipe, proc)
1916
2554
1917
2555
def add_pipe(self, parent_pipe, proc):
1918
2556
"""Dummy function; override as necessary"""
1919
2557
raise NotImplementedError()
1920
2558
1921
2559
1922
2560
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1923
socketserver.TCPServer, object):
2561
socketserver.TCPServer):
1924
2562
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1925
2563
1926
2564
Attributes:
1927
2565
enabled: Boolean; whether this server is activated yet
1928
2566
interface: None or a network interface name (string)
1929
2567
use_ipv6: Boolean; to use IPv6 or not
1930
2568
"""
2569
1931
2570
def __init__(self, server_address, RequestHandlerClass,
1932
interface=None, use_ipv6=True, socketfd=None):
2571
interface=None,
2572
use_ipv6=True,
2573
socketfd=None):
1933
2574
"""If socketfd is set, use that file descriptor instead of
1934
2575
creating a new one with socket.socket().
1935
2576
"""
1941
2582
self.socketfd = socketfd
1942
2583
# Save the original socket.socket() function
1943
2584
self.socket_socket = socket.socket
2585
1944
2586
# To implement --socket, we monkey patch socket.socket.
1945
#
2587
#
1946
2588
# (When socketserver.TCPServer is a new-style class, we
1947
2589
# could make self.socket into a property instead of monkey
1948
2590
# patching socket.socket.)
1949
#
2591
#
1950
2592
# Create a one-time-only replacement for socket.socket()
1951
2593
@functools.wraps(socket.socket)
1952
2594
def socket_wrapper(*args, **kwargs):
1964
2606
# socket_wrapper(), if socketfd was set.
1965
2607
socketserver.TCPServer.__init__(self, server_address,
1966
2608
RequestHandlerClass)
1967
2609
1968
2610
def server_bind(self):
1969
2611
"""This overrides the normal server_bind() function
1970
2612
to bind to an interface if one was specified, and also NOT to
1971
2613
bind to an address or port if they were not specified."""
2614
global SO_BINDTODEVICE
1972
2615
if self.interface is not None:
1973
2616
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
2617
# Fall back to a hard-coded value which seems to be
2618
# common enough.
2619
logger.warning("SO_BINDTODEVICE not found, trying 25")
2620
SO_BINDTODEVICE = 25
2621
try:
2622
self.socket.setsockopt(
2623
socket.SOL_SOCKET, SO_BINDTODEVICE,
2624
(self.interface + "\0").encode("utf-8"))
2625
except socket.error as error:
2626
if error.errno == errno.EPERM:
2627
logger.error("No permission to bind to"
2628
" interface %s", self.interface)
2629
elif error.errno == errno.ENOPROTOOPT:
2630
logger.error("SO_BINDTODEVICE not available;"
2631
" cannot bind to interface %s",
2632
self.interface)
2633
elif error.errno == errno.ENODEV:
2634
logger.error("Interface %s does not exist,"
2635
" cannot bind", self.interface)
2636
else:
2637
raise
1995
2638
# Only bind(2) the socket if we really need to.
1996
2639
if self.server_address[0] or self.server_address[1]:
2640
if self.server_address[1]:
2641
self.allow_reuse_address = True
1997
2642
if not self.server_address[0]:
1998
2643
if self.address_family == socket.AF_INET6:
1999
any_address = "::" # in6addr_any
2644
any_address = "::" # in6addr_any
2000
2645
else:
2001
any_address = "0.0.0.0" # INADDR_ANY
2646
any_address = "0.0.0.0" # INADDR_ANY
2002
2647
self.server_address = (any_address,
2003
2648
self.server_address[1])
2004
2649
elif not self.server_address[1]:
2005
self.server_address = (self.server_address[0],
2006
0)
2650
self.server_address = (self.server_address[0], 0)
2007
2651
# if self.interface:
2008
2652
# self.server_address = (self.server_address[0],
2009
2653
# 0, # port
2015
2659
2016
2660
class MandosServer(IPv6_TCPServer):
2017
2661
"""Mandos server.
2018
2662
2019
2663
Attributes:
2020
2664
clients: set of Client objects
2021
2665
gnutls_priority GnuTLS priority string
2022
2666
use_dbus: Boolean; to emit D-Bus signals or not
2023
2024
Assumes a gobject.MainLoop event loop.
2667
2668
Assumes a GLib.MainLoop event loop.
2025
2669
"""
2670
2026
2671
def __init__(self, server_address, RequestHandlerClass,
2027
interface=None, use_ipv6=True, clients=None,
2028
gnutls_priority=None, use_dbus=True, socketfd=None):
2672
interface=None,
2673
use_ipv6=True,
2674
clients=None,
2675
gnutls_priority=None,
2676
use_dbus=True,
2677
socketfd=None):
2029
2678
self.enabled = False
2030
2679
self.clients = clients
2031
2680
if self.clients is None:
2034
2683
self.gnutls_priority = gnutls_priority
2035
2684
IPv6_TCPServer.__init__(self, server_address,
2036
2685
RequestHandlerClass,
2037
interface = interface,
2038
use_ipv6 = use_ipv6,
2039
socketfd = socketfd)
2686
interface=interface,
2687
use_ipv6=use_ipv6,
2688
socketfd=socketfd)
2689
2040
2690
def server_activate(self):
2041
2691
if self.enabled:
2042
2692
return socketserver.TCPServer.server_activate(self)
2043
2693
2044
2694
def enable(self):
2045
2695
self.enabled = True
2046
2696
2047
2697
def add_pipe(self, parent_pipe, proc):
2048
2698
# 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):
2699
GLib.io_add_watch(
2700
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2701
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2702
functools.partial(self.handle_ipc,
2703
parent_pipe=parent_pipe,
2704
proc=proc))
2705
2706
def handle_ipc(self, source, condition,
2707
parent_pipe=None,
2708
proc=None,
2709
client_object=None):
2058
2710
# error, or the other end of multiprocessing.Pipe has closed
2059
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2711
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2060
2712
# Wait for other process to exit
2061
2713
proc.join()
2062
2714
return False
2063
2715
2064
2716
# Read a request from the child
2065
2717
request = parent_pipe.recv()
2066
2718
command = request[0]
2067
2719
2068
2720
if command == 'init':
2069
fpr = request[1]
2070
address = request[2]
2071
2072
for c in self.clients.itervalues():
2073
if c.fingerprint == fpr:
2721
key_id = request[1].decode("ascii")
2722
fpr = request[2].decode("ascii")
2723
address = request[3]
2724
2725
for c in self.clients.values():
2726
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2727
continue
2728
if key_id and c.key_id == key_id:
2729
client = c
2730
break
2731
if fpr and c.fingerprint == fpr:
2074
2732
client = c
2075
2733
break
2076
2734
else:
2077
logger.info("Client not found for fingerprint: %s, ad"
2078
"dress: %s", fpr, address)
2735
logger.info("Client not found for key ID: %s, address"
2736
": %s", key_id or fpr, address)
2079
2737
if self.use_dbus:
2080
2738
# Emit D-Bus signal
2081
mandos_dbus_service.ClientNotFound(fpr,
2739
mandos_dbus_service.ClientNotFound(key_id or fpr,
2082
2740
address[0])
2083
2741
parent_pipe.send(False)
2084
2742
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))
2743
2744
GLib.io_add_watch(
2745
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2746
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2747
functools.partial(self.handle_ipc,
2748
parent_pipe=parent_pipe,
2749
proc=proc,
2750
client_object=client))
2094
2751
parent_pipe.send(True)
2095
2752
# remove the old hook in favor of the new above hook on
2096
2753
# same fileno
2099
2756
funcname = request[1]
2100
2757
args = request[2]
2101
2758
kwargs = request[3]
2102
2759
2103
2760
parent_pipe.send(('data', getattr(client_object,
2104
2761
funcname)(*args,
2105
**kwargs)))
2106
2762
**kwargs)))
2763
2107
2764
if command == 'getattr':
2108
2765
attrname = request[1]
2109
if callable(client_object.__getattribute__(attrname)):
2110
parent_pipe.send(('function',))
2766
if isinstance(client_object.__getattribute__(attrname),
2767
collections.abc.Callable):
2768
parent_pipe.send(('function', ))
2111
2769
else:
2112
parent_pipe.send(('data', client_object
2113
.__getattribute__(attrname)))
2114
2770
parent_pipe.send((
2771
'data', client_object.__getattribute__(attrname)))
2772
2115
2773
if command == 'setattr':
2116
2774
attrname = request[1]
2117
2775
value = request[2]
2118
2776
setattr(client_object, attrname, value)
2119
2777
2120
2778
return True
2121
2779
2122
2780
2123
2781
def rfc3339_duration_to_delta(duration):
2124
2782
"""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)
2783
2784
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2785
True
2786
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2787
True
2788
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2789
True
2790
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2791
True
2792
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2793
True
2794
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2795
True
2796
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2797
True
2140
2798
"""
2141
2799
2142
2800
# Parsing an RFC 3339 duration with regular expressions is not
2143
2801
# possible - there would have to be multiple places for the same
2144
2802
# values, like seconds. The current code, while more esoteric, is
2145
2803
# cleaner without depending on a parsing library. If Python had a
2146
2804
# built-in library for parsing we would use it, but we'd like to
2147
2805
# avoid excessive use of external libraries.
2148
2806
2149
2807
# 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
2808
Token = collections.namedtuple("Token", (
2809
"regexp", # To match token; if "value" is not None, must have
2810
# a "group" containing digits
2811
"value", # datetime.timedelta or None
2812
"followers")) # Tokens valid after this token
2159
2813
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2160
2814
# the "duration" ABNF definition in RFC 3339, Appendix A.
2161
2815
token_end = Token(re.compile(r"$"), None, frozenset())
2162
2816
token_second = Token(re.compile(r"(\d+)S"),
2163
2817
datetime.timedelta(seconds=1),
2164
frozenset((token_end,)))
2818
frozenset((token_end, )))
2165
2819
token_minute = Token(re.compile(r"(\d+)M"),
2166
2820
datetime.timedelta(minutes=1),
2167
2821
frozenset((token_second, token_end)))
2183
2837
frozenset((token_month, token_end)))
2184
2838
token_week = Token(re.compile(r"(\d+)W"),
2185
2839
datetime.timedelta(weeks=1),
2186
frozenset((token_end,)))
2840
frozenset((token_end, )))
2187
2841
token_duration = Token(re.compile(r"P"), None,
2188
2842
frozenset((token_year, token_month,
2189
2843
token_day, token_time,
2190
token_week))),
2191
# Define starting values
2192
value = datetime.timedelta() # Value so far
2844
token_week)))
2845
# Define starting values:
2846
# Value so far
2847
value = datetime.timedelta()
2193
2848
found_token = None
2194
followers = frozenset(token_duration,) # Following valid tokens
2195
s = duration # String left to parse
2849
# Following valid tokens
2850
followers = frozenset((token_duration, ))
2851
# String left to parse
2852
s = duration
2196
2853
# Loop until end token is found
2197
2854
while found_token is not token_end:
2198
2855
# Search for any currently valid tokens
2214
2871
break
2215
2872
else:
2216
2873
# No currently valid tokens were found
2217
raise ValueError("Invalid RFC 3339 duration")
2874
raise ValueError("Invalid RFC 3339 duration: {!r}"
2875
.format(duration))
2218
2876
# End token found
2219
2877
return value
2220
2878
2221
2879
2222
2880
def string_to_delta(interval):
2223
2881
"""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)
2882
2883
>>> string_to_delta('7d') == datetime.timedelta(7)
2884
True
2885
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2886
True
2887
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2888
True
2889
>>> string_to_delta('24h') == datetime.timedelta(1)
2890
True
2891
>>> string_to_delta('1w') == datetime.timedelta(7)
2892
True
2893
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2894
True
2237
2895
"""
2238
2896
2239
2897
try:
2240
2898
return rfc3339_duration_to_delta(interval)
2241
2899
except ValueError:
2242
2900
pass
2243
2901
2244
2902
timevalue = datetime.timedelta(0)
2245
2903
for s in interval.split():
2246
2904
try:
2247
suffix = unicode(s[-1])
2905
suffix = s[-1]
2248
2906
value = int(s[:-1])
2249
2907
if suffix == "d":
2250
2908
delta = datetime.timedelta(value)
2257
2915
elif suffix == "w":
2258
2916
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2259
2917
else:
2260
raise ValueError("Unknown suffix {0!r}"
2261
.format(suffix))
2918
raise ValueError("Unknown suffix {!r}".format(suffix))
2262
2919
except IndexError as e:
2263
2920
raise ValueError(*(e.args))
2264
2921
timevalue += delta
2265
2922
return timevalue
2266
2923
2267
2924
2268
def daemon(nochdir = False, noclose = False):
2925
def daemon(nochdir=False, noclose=False):
2269
2926
"""See daemon(3). Standard BSD Unix function.
2270
2927
2271
2928
This should really exist as os.daemon, but it doesn't (yet)."""
2272
2929
if os.fork():
2273
2930
sys.exit()
2281
2938
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2282
2939
if not stat.S_ISCHR(os.fstat(null).st_mode):
2283
2940
raise OSError(errno.ENODEV,
2284
"{0} not a character device"
2941
"{} not a character device"
2285
2942
.format(os.devnull))
2286
2943
os.dup2(null, sys.stdin.fileno())
2287
2944
os.dup2(null, sys.stdout.fileno())
2291
2948
2292
2949
2293
2950
def main():
2294
2951
2295
2952
##################################################################
2296
2953
# Parsing of options, both command line and config file
2297
2954
2298
2955
parser = argparse.ArgumentParser()
2299
2956
parser.add_argument("-v", "--version", action="version",
2300
version = "%(prog)s {0}".format(version),
2957
version="%(prog)s {}".format(version),
2301
2958
help="show version number and exit")
2302
2959
parser.add_argument("-i", "--interface", metavar="IF",
2303
2960
help="Bind to interface IF")
2336
2993
help="Directory to save/restore state in")
2337
2994
parser.add_argument("--foreground", action="store_true",
2338
2995
help="Run in foreground", default=None)
2339
2996
parser.add_argument("--no-zeroconf", action="store_false",
2997
dest="zeroconf", help="Do not use Zeroconf",
2998
default=None)
2999
2340
3000
options = parser.parse_args()
2341
2342
if options.check:
2343
import doctest
2344
fail_count, test_count = doctest.testmod()
2345
sys.exit(os.EX_OK if fail_count == 0 else 1)
2346
3001
2347
3002
# 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
3003
if gnutls.has_rawpk:
3004
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3005
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3006
else:
3007
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3008
":+SIGN-DSA-SHA256")
3009
server_defaults = {"interface": "",
3010
"address": "",
3011
"port": "",
3012
"debug": "False",
3013
"priority": priority,
3014
"servicename": "Mandos",
3015
"use_dbus": "True",
3016
"use_ipv6": "True",
3017
"debuglevel": "",
3018
"restore": "True",
3019
"socket": "",
3020
"statedir": "/var/lib/mandos",
3021
"foreground": "False",
3022
"zeroconf": "True",
3023
}
3024
del priority
3025
2364
3026
# Parse config file for server-global settings
2365
server_config = configparser.SafeConfigParser(server_defaults)
3027
server_config = configparser.ConfigParser(server_defaults)
2366
3028
del server_defaults
2367
server_config.read(os.path.join(options.configdir,
2368
"mandos.conf"))
2369
# Convert the SafeConfigParser object to a dict
3029
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3030
# Convert the ConfigParser object to a dict
2370
3031
server_settings = server_config.defaults()
2371
3032
# Use the appropriate methods on the non-string config options
2372
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
3033
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3034
"foreground", "zeroconf"):
2373
3035
server_settings[option] = server_config.getboolean("DEFAULT",
2374
3036
option)
2375
3037
if server_settings["port"]:
2385
3047
server_settings["socket"] = os.dup(server_settings
2386
3048
["socket"])
2387
3049
del server_config
2388
3050
2389
3051
# Override the settings from the config file with command line
2390
3052
# options, if set.
2391
3053
for option in ("interface", "address", "port", "debug",
2392
"priority", "servicename", "configdir",
2393
"use_dbus", "use_ipv6", "debuglevel", "restore",
2394
"statedir", "socket", "foreground"):
3054
"priority", "servicename", "configdir", "use_dbus",
3055
"use_ipv6", "debuglevel", "restore", "statedir",
3056
"socket", "foreground", "zeroconf"):
2395
3057
value = getattr(options, option)
2396
3058
if value is not None:
2397
3059
server_settings[option] = value
2398
3060
del options
2399
3061
# Force all strings to be unicode
2400
3062
for option in server_settings.keys():
2401
if type(server_settings[option]) is str:
2402
server_settings[option] = unicode(server_settings[option])
3063
if isinstance(server_settings[option], bytes):
3064
server_settings[option] = (server_settings[option]
3065
.decode("utf-8"))
2403
3066
# Force all boolean options to be boolean
2404
3067
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2405
"foreground"):
3068
"foreground", "zeroconf"):
2406
3069
server_settings[option] = bool(server_settings[option])
2407
3070
# Debug implies foreground
2408
3071
if server_settings["debug"]:
2409
3072
server_settings["foreground"] = True
2410
3073
# Now we have our good server settings in "server_settings"
2411
3074
2412
3075
##################################################################
2413
3076
3077
if (not server_settings["zeroconf"]
3078
and not (server_settings["port"]
3079
or server_settings["socket"] != "")):
3080
parser.error("Needs port or socket to work without Zeroconf")
3081
2414
3082
# For convenience
2415
3083
debug = server_settings["debug"]
2416
3084
debuglevel = server_settings["debuglevel"]
2419
3087
stored_state_path = os.path.join(server_settings["statedir"],
2420
3088
stored_state_file)
2421
3089
foreground = server_settings["foreground"]
2422
3090
zeroconf = server_settings["zeroconf"]
3091
2423
3092
if debug:
2424
3093
initlogger(debug, logging.DEBUG)
2425
3094
else:
2428
3097
else:
2429
3098
level = getattr(logging, debuglevel.upper())
2430
3099
initlogger(debug, level)
2431
3100
2432
3101
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
3102
syslogger.setFormatter(
3103
logging.Formatter('Mandos ({}) [%(process)d]:'
3104
' %(levelname)s: %(message)s'.format(
3105
server_settings["servicename"])))
3106
2439
3107
# Parse config file with clients
2440
client_config = configparser.SafeConfigParser(Client
2441
.client_defaults)
3108
client_config = configparser.ConfigParser(Client.client_defaults)
2442
3109
client_config.read(os.path.join(server_settings["configdir"],
2443
3110
"clients.conf"))
2444
3111
2445
3112
global mandos_dbus_service
2446
3113
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))
3114
3115
socketfd = None
3116
if server_settings["socket"] != "":
3117
socketfd = server_settings["socket"]
3118
tcp_server = MandosServer(
3119
(server_settings["address"], server_settings["port"]),
3120
ClientHandler,
3121
interface=(server_settings["interface"] or None),
3122
use_ipv6=use_ipv6,
3123
gnutls_priority=server_settings["priority"],
3124
use_dbus=use_dbus,
3125
socketfd=socketfd)
2459
3126
if not foreground:
2460
3127
pidfilename = "/run/mandos.pid"
2461
3128
if not os.path.isdir("/run/."):
2462
3129
pidfilename = "/var/run/mandos.pid"
2463
3130
pidfile = None
2464
3131
try:
2465
pidfile = open(pidfilename, "w")
3132
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2466
3133
except IOError as e:
2467
3134
logger.error("Could not open file %r", pidfilename,
2468
3135
exc_info=e)
2469
2470
for name in ("_mandos", "mandos", "nobody"):
3136
3137
for name, group in (("_mandos", "_mandos"),
3138
("mandos", "mandos"),
3139
("nobody", "nogroup")):
2471
3140
try:
2472
3141
uid = pwd.getpwnam(name).pw_uid
2473
gid = pwd.getpwnam(name).pw_gid
3142
gid = pwd.getpwnam(group).pw_gid
2474
3143
break
2475
3144
except KeyError:
2476
3145
continue
2480
3149
try:
2481
3150
os.setgid(gid)
2482
3151
os.setuid(uid)
3152
if debug:
3153
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3154
gid))
2483
3155
except OSError as error:
3156
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3157
.format(uid, gid, os.strerror(error.errno)))
2484
3158
if error.errno != errno.EPERM:
2485
3159
raise
2486
3160
2487
3161
if debug:
2488
3162
# Enable all possible GnuTLS debugging
2489
3163
2490
3164
# "Use a log level over 10 to enable all debugging options."
2491
3165
# - GnuTLS manual
2492
gnutls.library.functions.gnutls_global_set_log_level(11)
2493
2494
@gnutls.library.types.gnutls_log_func
3166
gnutls.global_set_log_level(11)
3167
3168
@gnutls.log_func
2495
3169
def debug_gnutls(level, string):
2496
3170
logger.debug("GnuTLS: %s", string[:-1])
2497
2498
(gnutls.library.functions
2499
.gnutls_global_set_log_function(debug_gnutls))
2500
3171
3172
gnutls.global_set_log_function(debug_gnutls)
3173
2501
3174
# Redirect stdin so all checkers get /dev/null
2502
3175
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2503
3176
os.dup2(null, sys.stdin.fileno())
2504
3177
if null > 2:
2505
3178
os.close(null)
2506
3179
2507
3180
# Need to fork before connecting to D-Bus
2508
3181
if not foreground:
2509
3182
# Close all input and output, do double fork, etc.
2510
3183
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
3184
3185
if gi.version_info < (3, 10, 2):
3186
# multiprocessing will use threads, so before we use GLib we
3187
# need to inform GLib that threads will be used.
3188
GLib.threads_init()
3189
2516
3190
global main_loop
2517
3191
# From the Avahi example code
2518
3192
DBusGMainLoop(set_as_default=True)
2519
main_loop = gobject.MainLoop()
3193
main_loop = GLib.MainLoop()
2520
3194
bus = dbus.SystemBus()
2521
3195
# End of Avahi example code
2522
3196
if use_dbus:
2523
3197
try:
2524
3198
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:
3199
bus,
3200
do_not_queue=True)
3201
old_bus_name = dbus.service.BusName(
3202
"se.bsnet.fukt.Mandos", bus,
3203
do_not_queue=True)
3204
except dbus.exceptions.DBusException as e:
2530
3205
logger.error("Disabling D-Bus:", exc_info=e)
2531
3206
use_dbus = False
2532
3207
server_settings["use_dbus"] = False
2533
3208
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
3209
if zeroconf:
3210
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3211
service = AvahiServiceToSyslog(
3212
name=server_settings["servicename"],
3213
servicetype="_mandos._tcp",
3214
protocol=protocol,
3215
bus=bus)
3216
if server_settings["interface"]:
3217
service.interface = if_nametoindex(
3218
server_settings["interface"].encode("utf-8"))
3219
2543
3220
global multiprocessing_manager
2544
3221
multiprocessing_manager = multiprocessing.Manager()
2545
3222
2546
3223
client_class = Client
2547
3224
if use_dbus:
2548
client_class = functools.partial(ClientDBus, bus = bus)
2549
3225
client_class = functools.partial(ClientDBus, bus=bus)
3226
2550
3227
client_settings = Client.config_parser(client_config)
2551
3228
old_client_settings = {}
2552
3229
clients_data = {}
2553
3230
2554
3231
# This is used to redirect stdout and stderr for checker processes
2555
3232
global wnull
2556
wnull = open(os.devnull, "w") # A writable /dev/null
3233
wnull = open(os.devnull, "w") # A writable /dev/null
2557
3234
# Only used if server is running in foreground but not in debug
2558
3235
# mode
2559
3236
if debug or not foreground:
2560
3237
wnull.close()
2561
3238
2562
3239
# Get client data and settings from last running state.
2563
3240
if server_settings["restore"]:
2564
3241
try:
2565
3242
with open(stored_state_path, "rb") as stored_state:
2566
clients_data, old_client_settings = (pickle.load
2567
(stored_state))
3243
if sys.version_info.major == 2:
3244
clients_data, old_client_settings = pickle.load(
3245
stored_state)
3246
else:
3247
bytes_clients_data, bytes_old_client_settings = (
3248
pickle.load(stored_state, encoding="bytes"))
3249
# Fix bytes to strings
3250
# clients_data
3251
# .keys()
3252
clients_data = {(key.decode("utf-8")
3253
if isinstance(key, bytes)
3254
else key): value
3255
for key, value in
3256
bytes_clients_data.items()}
3257
del bytes_clients_data
3258
for key in clients_data:
3259
value = {(k.decode("utf-8")
3260
if isinstance(k, bytes) else k): v
3261
for k, v in
3262
clients_data[key].items()}
3263
clients_data[key] = value
3264
# .client_structure
3265
value["client_structure"] = [
3266
(s.decode("utf-8")
3267
if isinstance(s, bytes)
3268
else s) for s in
3269
value["client_structure"]]
3270
# .name, .host, and .checker_command
3271
for k in ("name", "host", "checker_command"):
3272
if isinstance(value[k], bytes):
3273
value[k] = value[k].decode("utf-8")
3274
if "key_id" not in value:
3275
value["key_id"] = ""
3276
elif "fingerprint" not in value:
3277
value["fingerprint"] = ""
3278
# old_client_settings
3279
# .keys()
3280
old_client_settings = {
3281
(key.decode("utf-8")
3282
if isinstance(key, bytes)
3283
else key): value
3284
for key, value in
3285
bytes_old_client_settings.items()}
3286
del bytes_old_client_settings
3287
# .host and .checker_command
3288
for value in old_client_settings.values():
3289
for attribute in ("host", "checker_command"):
3290
if isinstance(value[attribute], bytes):
3291
value[attribute] = (value[attribute]
3292
.decode("utf-8"))
2568
3293
os.remove(stored_state_path)
2569
3294
except IOError as e:
2570
3295
if e.errno == errno.ENOENT:
2571
logger.warning("Could not load persistent state: {0}"
2572
.format(os.strerror(e.errno)))
3296
logger.warning("Could not load persistent state:"
3297
" {}".format(os.strerror(e.errno)))
2573
3298
else:
2574
3299
logger.critical("Could not load persistent state:",
2575
3300
exc_info=e)
2576
3301
raise
2577
3302
except EOFError as e:
2578
3303
logger.warning("Could not load persistent state: "
2579
"EOFError:", exc_info=e)
2580
3304
"EOFError:",
3305
exc_info=e)
3306
2581
3307
with PGPEngine() as pgp:
2582
for client_name, client in clients_data.iteritems():
3308
for client_name, client in clients_data.items():
2583
3309
# Skip removed clients
2584
3310
if client_name not in client_settings:
2585
3311
continue
2586
3312
2587
3313
# Decide which value to use after restoring saved state.
2588
3314
# We have three different values: Old config file,
2589
3315
# new config file, and saved state.
2594
3320
# For each value in new config, check if it
2595
3321
# differs from the old config value (Except for
2596
3322
# the "secret" attribute)
2597
if (name != "secret" and
2598
value != old_client_settings[client_name]
2599
[name]):
3323
if (name != "secret"
3324
and (value !=
3325
old_client_settings[client_name][name])):
2600
3326
client[name] = value
2601
3327
except KeyError:
2602
3328
pass
2603
3329
2604
3330
# Clients who has passed its expire date can still be
2605
# enabled if its last checker was successful. Clients
3331
# enabled if its last checker was successful. A Client
2606
3332
# whose checker succeeded before we stored its state is
2607
3333
# assumed to have successfully run all checkers during
2608
3334
# downtime.
2610
3336
if datetime.datetime.utcnow() >= client["expires"]:
2611
3337
if not client["last_checked_ok"]:
2612
3338
logger.warning(
2613
"disabling client {0} - Client never "
2614
"performed a successful checker"
2615
.format(client_name))
3339
"disabling client {} - Client never "
3340
"performed a successful checker".format(
3341
client_name))
2616
3342
client["enabled"] = False
2617
3343
elif client["last_checker_status"] != 0:
2618
3344
logger.warning(
2619
"disabling client {0} - Client "
2620
"last checker failed with error code {1}"
2621
.format(client_name,
2622
client["last_checker_status"]))
3345
"disabling client {} - Client last"
3346
" checker failed with error code"
3347
" {}".format(
3348
client_name,
3349
client["last_checker_status"]))
2623
3350
client["enabled"] = False
2624
3351
else:
2625
client["expires"] = (datetime.datetime
2626
.utcnow()
2627
+ client["timeout"])
3352
client["expires"] = (
3353
datetime.datetime.utcnow()
3354
+ client["timeout"])
2628
3355
logger.debug("Last checker succeeded,"
2629
" keeping {0} enabled"
2630
.format(client_name))
3356
" keeping {} enabled".format(
3357
client_name))
2631
3358
try:
2632
client["secret"] = (
2633
pgp.decrypt(client["encrypted_secret"],
2634
client_settings[client_name]
2635
["secret"]))
3359
client["secret"] = pgp.decrypt(
3360
client["encrypted_secret"],
3361
client_settings[client_name]["secret"])
2636
3362
except PGPError:
2637
3363
# 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
3364
logger.debug("Failed to decrypt {} old secret".format(
3365
client_name))
3366
client["secret"] = (client_settings[client_name]
3367
["secret"])
3368
2643
3369
# Add/remove clients based on new changes made to config
2644
3370
for client_name in (set(old_client_settings)
2645
3371
- set(client_settings)):
2647
3373
for client_name in (set(client_settings)
2648
3374
- set(old_client_settings)):
2649
3375
clients_data[client_name] = client_settings[client_name]
2650
3376
2651
3377
# Create all client objects
2652
for client_name, client in clients_data.iteritems():
3378
for client_name, client in clients_data.items():
2653
3379
tcp_server.clients[client_name] = client_class(
2654
name = client_name, settings = client,
2655
server_settings = server_settings)
2656
3380
name=client_name,
3381
settings=client,
3382
server_settings=server_settings)
3383
2657
3384
if not tcp_server.clients:
2658
3385
logger.warning("No clients defined")
2659
3386
2660
3387
if not foreground:
2661
3388
if pidfile is not None:
3389
pid = os.getpid()
2662
3390
try:
2663
3391
with pidfile:
2664
pid = os.getpid()
2665
pidfile.write(str(pid) + "\n".encode("utf-8"))
3392
print(pid, file=pidfile)
2666
3393
except IOError:
2667
3394
logger.error("Could not write to file %r with PID %d",
2668
3395
pidfilename, pid)
2669
3396
del pidfile
2670
3397
del pidfilename
2671
2672
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2673
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2674
3398
3399
for termsig in (signal.SIGHUP, signal.SIGTERM):
3400
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3401
lambda: main_loop.quit() and False)
3402
2675
3403
if use_dbus:
2676
@alternate_dbus_interfaces({"se.recompile.Mandos":
2677
"se.bsnet.fukt.Mandos"})
2678
class MandosDBusService(DBusObjectWithProperties):
3404
3405
@alternate_dbus_interfaces(
3406
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3407
class MandosDBusService(DBusObjectWithObjectManager):
2679
3408
"""A D-Bus proxy object"""
3409
2680
3410
def __init__(self):
2681
3411
dbus.service.Object.__init__(self, bus, "/")
3412
2682
3413
_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
3414
2690
3415
@dbus.service.signal(_interface, signature="o")
2691
3416
def ClientAdded(self, objpath):
2692
3417
"D-Bus signal"
2693
3418
pass
2694
3419
2695
3420
@dbus.service.signal(_interface, signature="ss")
2696
def ClientNotFound(self, fingerprint, address):
3421
def ClientNotFound(self, key_id, address):
2697
3422
"D-Bus signal"
2698
3423
pass
2699
3424
3425
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3426
"true"})
2700
3427
@dbus.service.signal(_interface, signature="os")
2701
3428
def ClientRemoved(self, objpath, name):
2702
3429
"D-Bus signal"
2703
3430
pass
2704
3431
3432
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3433
"true"})
2705
3434
@dbus.service.method(_interface, out_signature="ao")
2706
3435
def GetAllClients(self):
2707
3436
"D-Bus method"
2708
return dbus.Array(c.dbus_object_path
2709
for c in
2710
tcp_server.clients.itervalues())
2711
3437
return dbus.Array(c.dbus_object_path for c in
3438
tcp_server.clients.values())
3439
3440
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3441
"true"})
2712
3442
@dbus.service.method(_interface,
2713
3443
out_signature="a{oa{sv}}")
2714
3444
def GetAllClientsWithProperties(self):
2715
3445
"D-Bus method"
2716
3446
return dbus.Dictionary(
2717
((c.dbus_object_path, c.GetAll(""))
2718
for c in tcp_server.clients.itervalues()),
3447
{c.dbus_object_path: c.GetAll(
3448
"se.recompile.Mandos.Client")
3449
for c in tcp_server.clients.values()},
2719
3450
signature="oa{sv}")
2720
3451
2721
3452
@dbus.service.method(_interface, in_signature="o")
2722
3453
def RemoveClient(self, object_path):
2723
3454
"D-Bus method"
2724
for c in tcp_server.clients.itervalues():
3455
for c in tcp_server.clients.values():
2725
3456
if c.dbus_object_path == object_path:
2726
3457
del tcp_server.clients[c.name]
2727
3458
c.remove_from_connection()
2728
# Don't signal anything except ClientRemoved
3459
# Don't signal the disabling
2729
3460
c.disable(quiet=True)
2730
# Emit D-Bus signal
2731
self.ClientRemoved(object_path, c.name)
3461
# Emit D-Bus signal for removal
3462
self.client_removed_signal(c)
2732
3463
return
2733
3464
raise KeyError(object_path)
2734
3465
2735
3466
del _interface
2736
3467
3468
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3469
out_signature="a{oa{sa{sv}}}")
3470
def GetManagedObjects(self):
3471
"""D-Bus method"""
3472
return dbus.Dictionary(
3473
{client.dbus_object_path:
3474
dbus.Dictionary(
3475
{interface: client.GetAll(interface)
3476
for interface in
3477
client._get_all_interface_names()})
3478
for client in tcp_server.clients.values()})
3479
3480
def client_added_signal(self, client):
3481
"""Send the new standard signal and the old signal"""
3482
if use_dbus:
3483
# New standard signal
3484
self.InterfacesAdded(
3485
client.dbus_object_path,
3486
dbus.Dictionary(
3487
{interface: client.GetAll(interface)
3488
for interface in
3489
client._get_all_interface_names()}))
3490
# Old signal
3491
self.ClientAdded(client.dbus_object_path)
3492
3493
def client_removed_signal(self, client):
3494
"""Send the new standard signal and the old signal"""
3495
if use_dbus:
3496
# New standard signal
3497
self.InterfacesRemoved(
3498
client.dbus_object_path,
3499
client._get_all_interface_names())
3500
# Old signal
3501
self.ClientRemoved(client.dbus_object_path,
3502
client.name)
3503
2737
3504
mandos_dbus_service = MandosDBusService()
2738
3505
3506
# Save modules to variables to exempt the modules from being
3507
# unloaded before the function registered with atexit() is run.
3508
mp = multiprocessing
3509
wn = wnull
3510
2739
3511
def cleanup():
2740
3512
"Cleanup function; run on exit"
2741
service.cleanup()
2742
2743
multiprocessing.active_children()
2744
wnull.close()
3513
if zeroconf:
3514
service.cleanup()
3515
3516
mp.active_children()
3517
wn.close()
2745
3518
if not (tcp_server.clients or client_settings):
2746
3519
return
2747
3520
2748
3521
# Store client before exiting. Secrets are encrypted with key
2749
3522
# based on what config file has. If config file is
2750
3523
# removed/edited, old secret will thus be unrecovable.
2751
3524
clients = {}
2752
3525
with PGPEngine() as pgp:
2753
for client in tcp_server.clients.itervalues():
3526
for client in tcp_server.clients.values():
2754
3527
key = client_settings[client.name]["secret"]
2755
3528
client.encrypted_secret = pgp.encrypt(client.secret,
2756
3529
key)
2757
3530
client_dict = {}
2758
3531
2759
3532
# A list of attributes that can not be pickled
2760
3533
# + secret.
2761
exclude = set(("bus", "changedstate", "secret",
2762
"checker", "server_settings"))
2763
for name, typ in (inspect.getmembers
2764
(dbus.service.Object)):
3534
exclude = {"bus", "changedstate", "secret",
3535
"checker", "server_settings"}
3536
for name, typ in inspect.getmembers(dbus.service
3537
.Object):
2765
3538
exclude.add(name)
2766
3539
2767
3540
client_dict["encrypted_secret"] = (client
2768
3541
.encrypted_secret)
2769
3542
for attr in client.client_structure:
2770
3543
if attr not in exclude:
2771
3544
client_dict[attr] = getattr(client, attr)
2772
3545
2773
3546
clients[client.name] = client_dict
2774
3547
del client_settings[client.name]["secret"]
2775
3548
2776
3549
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
3550
with tempfile.NamedTemporaryFile(
3551
mode='wb',
3552
suffix=".pickle",
3553
prefix='clients-',
3554
dir=os.path.dirname(stored_state_path),
3555
delete=False) as stored_state:
3556
pickle.dump((clients, client_settings), stored_state,
3557
protocol=2)
3558
tempname = stored_state.name
2783
3559
os.rename(tempname, stored_state_path)
2784
3560
except (IOError, OSError) as e:
2785
3561
if not debug:
2788
3564
except NameError:
2789
3565
pass
2790
3566
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2791
logger.warning("Could not save persistent state: {0}"
3567
logger.warning("Could not save persistent state: {}"
2792
3568
.format(os.strerror(e.errno)))
2793
3569
else:
2794
3570
logger.warning("Could not save persistent state:",
2795
3571
exc_info=e)
2796
3572
raise
2797
3573
2798
3574
# Delete all clients, and settings from config
2799
3575
while tcp_server.clients:
2800
3576
name, client = tcp_server.clients.popitem()
2801
3577
if use_dbus:
2802
3578
client.remove_from_connection()
2803
# Don't signal anything except ClientRemoved
3579
# Don't signal the disabling
2804
3580
client.disable(quiet=True)
3581
# Emit D-Bus signal for removal
2805
3582
if use_dbus:
2806
# Emit D-Bus signal
2807
mandos_dbus_service.ClientRemoved(client
2808
.dbus_object_path,
2809
client.name)
3583
mandos_dbus_service.client_removed_signal(client)
2810
3584
client_settings.clear()
2811
3585
2812
3586
atexit.register(cleanup)
2813
2814
for client in tcp_server.clients.itervalues():
3587
3588
for client in tcp_server.clients.values():
2815
3589
if use_dbus:
2816
# Emit D-Bus signal
2817
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3590
# Emit D-Bus signal for adding
3591
mandos_dbus_service.client_added_signal(client)
2818
3592
# Need to initiate checking of clients
2819
3593
if client.enabled:
2820
3594
client.init_checker()
2821
3595
2822
3596
tcp_server.enable()
2823
3597
tcp_server.server_activate()
2824
3598
2825
3599
# Find out what port we got
2826
service.port = tcp_server.socket.getsockname()[1]
3600
if zeroconf:
3601
service.port = tcp_server.socket.getsockname()[1]
2827
3602
if use_ipv6:
2828
3603
logger.info("Now listening on address %r, port %d,"
2829
3604
" flowinfo %d, scope_id %d",
2831
3606
else: # IPv4
2832
3607
logger.info("Now listening on address %r, port %d",
2833
3608
*tcp_server.socket.getsockname())
2834
2835
#service.interface = tcp_server.socket.getsockname()[3]
2836
3609
3610
# service.interface = tcp_server.socket.getsockname()[3]
3611
2837
3612
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
3613
if zeroconf:
3614
# From the Avahi example code
3615
try:
3616
service.activate()
3617
except dbus.exceptions.DBusException as error:
3618
logger.critical("D-Bus Exception", exc_info=error)
3619
cleanup()
3620
sys.exit(1)
3621
# End of Avahi example code
3622
3623
GLib.io_add_watch(
3624
GLib.IOChannel.unix_new(tcp_server.fileno()),
3625
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3626
lambda *args, **kwargs: (tcp_server.handle_request
3627
(*args[2:], **kwargs) or True))
3628
2852
3629
logger.debug("Starting main loop")
2853
3630
main_loop.run()
2854
3631
except AvahiError as error:
2863
3640
# Must run before the D-Bus bus name gets deregistered
2864
3641
cleanup()
2865
3642
3643
3644
def should_only_run_tests():
3645
parser = argparse.ArgumentParser(add_help=False)
3646
parser.add_argument("--check", action='store_true')
3647
args, unknown_args = parser.parse_known_args()
3648
run_tests = args.check
3649
if run_tests:
3650
# Remove --check argument from sys.argv
3651
sys.argv[1:] = unknown_args
3652
return run_tests
3653
3654
# Add all tests from doctest strings
3655
def load_tests(loader, tests, none):
3656
import doctest
3657
tests.addTests(doctest.DocTestSuite())
3658
return tests
3659
2866
3660
if __name__ == '__main__':
2867
main()
3661
try:
3662
if should_only_run_tests():
3663
# Call using ./mandos --check [--verbose]
3664
unittest.main()
3665
else:
3666
main()
3667
finally:
3668
logging.shutdown()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0