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- Committer: Teddy Hogeborn
- Date: 2011-11-27 19:37:54 UTC
- mto: (518.1.11 mandos-persistent)
- mto: This revision was merged to the branch mainline in revision 524.
- Revision ID: teddy@recompile.se-20111127193754-4366e18gmi11kew0
* mandos (_timedelta_to_milliseconds): Renamed to
"timedelta_to_milliseconds";
all callers changed.
(Client._approved): Bug fix; renamed to "approved" without
underscore. All users changed.
(ProxyClient): Removed superfluous parens in "if" statements.
(ClientHandler.handle): Bug fix: Emit NewRequest signal *after*
client is found, not before.
"timedelta_to_milliseconds";
all callers changed.
(Client._approved): Bug fix; renamed to "approved" without
underscore. All users changed.
(ProxyClient): Removed superfluous parens in "if" statements.
(ClientHandler.handle): Bug fix: Emit NewRequest signal *after*
client is found, not before.
- files added:
- initramfs-tools-hook-conf
- files removed:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python3 -bI
2
# -*- 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
#
1
#!/usr/bin/python
2
# -*- mode: python; coding: utf-8 -*-
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
28
#
26
#
29
27
# You should have received a copy of the GNU General Public License
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
32
31
# Contact the authors at <mandos@recompile.se>.
33
#
32
#
34
33
35
34
from __future__ import (division, absolute_import, print_function,
36
35
unicode_literals)
37
36
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
37
import SocketServer as socketserver
47
38
import socket
48
39
import argparse
49
40
import datetime
50
41
import errno
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
55
49
import sys
56
50
import re
57
51
import os
66
60
import struct
67
61
import fcntl
68
62
import functools
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
63
import cPickle as pickle
73
64
import multiprocessing
74
65
import types
75
66
import binascii
76
67
import tempfile
77
import itertools
78
import collections
79
import codecs
80
import unittest
81
import random
82
import shlex
83
68
84
69
import dbus
85
70
import dbus.service
86
import gi
87
from gi.repository import GLib
71
import gobject
72
import avahi
88
73
from dbus.mainloop.glib import DBusGMainLoop
89
74
import ctypes
90
75
import ctypes.util
91
76
import xml.dom.minidom
92
77
import inspect
93
94
if sys.version_info.major == 2:
95
__metaclass__ = type
96
str = unicode
97
98
# Add collections.abc.Callable if it does not exist
99
try:
100
collections.abc.Callable
101
except AttributeError:
102
class abc:
103
Callable = collections.Callable
104
collections.abc = abc
105
del abc
106
107
# Add shlex.quote if it does not exist
108
try:
109
shlex.quote
110
except AttributeError:
111
shlex.quote = re.escape
112
113
# Show warnings by default
114
if not sys.warnoptions:
115
import warnings
116
warnings.simplefilter("default")
117
118
# Try to find the value of SO_BINDTODEVICE:
119
try:
120
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
121
# newer, and it is also the most natural place for it:
78
import GnuPGInterface
79
80
try:
122
81
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
123
82
except AttributeError:
124
83
try:
125
# This is where SO_BINDTODEVICE was up to and including Python
126
# 2.6, and also 3.2:
127
84
from IN import SO_BINDTODEVICE
128
85
except ImportError:
129
# In Python 2.7 it seems to have been removed entirely.
130
# Try running the C preprocessor:
131
try:
132
cc = subprocess.Popen(["cc", "--language=c", "-E",
133
"/dev/stdin"],
134
stdin=subprocess.PIPE,
135
stdout=subprocess.PIPE)
136
stdout = cc.communicate(
137
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
138
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
139
except (OSError, ValueError, IndexError):
140
# No value found
141
SO_BINDTODEVICE = None
142
143
if sys.version_info < (3, 2):
144
configparser.Configparser = configparser.SafeConfigParser
145
146
version = "1.8.11"
86
SO_BINDTODEVICE = None
87
88
89
version = "1.4.1"
147
90
stored_state_file = "clients.pickle"
148
91
149
92
logger = logging.getLogger()
150
logging.captureWarnings(True) # Show warnings via the logging system
151
syslogger = None
93
syslogger = (logging.handlers.SysLogHandler
94
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
95
address = str("/dev/log")))
152
96
153
97
try:
154
if_nametoindex = ctypes.cdll.LoadLibrary(
155
ctypes.util.find_library("c")).if_nametoindex
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
100
.if_nametoindex)
156
101
except (OSError, AttributeError):
157
158
102
def if_nametoindex(interface):
159
103
"Get an interface index the hard way, i.e. using fcntl()"
160
104
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
161
105
with contextlib.closing(socket.socket()) as s:
162
106
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
163
struct.pack(b"16s16x", interface))
164
interface_index = struct.unpack("I", ifreq[16:20])[0]
107
struct.pack(str("16s16x"),
108
interface))
109
interface_index = struct.unpack(str("I"),
110
ifreq[16:20])[0]
165
111
return interface_index
166
112
167
113
168
def copy_function(func):
169
"""Make a copy of a function"""
170
if sys.version_info.major == 2:
171
return types.FunctionType(func.func_code,
172
func.func_globals,
173
func.func_name,
174
func.func_defaults,
175
func.func_closure)
176
else:
177
return types.FunctionType(func.__code__,
178
func.__globals__,
179
func.__name__,
180
func.__defaults__,
181
func.__closure__)
182
183
184
def initlogger(debug, level=logging.WARNING):
114
def initlogger(level=logging.WARNING):
185
115
"""init logger and add loglevel"""
186
187
global syslogger
188
syslogger = (logging.handlers.SysLogHandler(
189
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
190
address="/dev/log"))
116
191
117
syslogger.setFormatter(logging.Formatter
192
118
('Mandos [%(process)d]: %(levelname)s:'
193
119
' %(message)s'))
194
120
logger.addHandler(syslogger)
195
196
if debug:
197
console = logging.StreamHandler()
198
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
199
' [%(process)d]:'
200
' %(levelname)s:'
201
' %(message)s'))
202
logger.addHandler(console)
121
122
console = logging.StreamHandler()
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
124
' [%(process)d]:'
125
' %(levelname)s:'
126
' %(message)s'))
127
logger.addHandler(console)
203
128
logger.setLevel(level)
204
129
205
130
206
class PGPError(Exception):
207
"""Exception if encryption/decryption fails"""
131
class CryptoError(Exception):
208
132
pass
209
133
210
134
211
class PGPEngine:
135
class Crypto(object):
212
136
"""A simple class for OpenPGP symmetric encryption & decryption"""
213
214
137
def __init__(self):
138
self.gnupg = GnuPGInterface.GnuPG()
215
139
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
216
self.gpg = "gpg"
217
try:
218
output = subprocess.check_output(["gpgconf"])
219
for line in output.splitlines():
220
name, text, path = line.split(b":")
221
if name == b"gpg":
222
self.gpg = path
223
break
224
except OSError as e:
225
if e.errno != errno.ENOENT:
226
raise
227
self.gnupgargs = ['--batch',
228
'--homedir', self.tempdir,
229
'--force-mdc',
230
'--quiet']
231
# Only GPG version 1 has the --no-use-agent option.
232
if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
233
self.gnupgargs.append("--no-use-agent")
234
140
self.gnupg = GnuPGInterface.GnuPG()
141
self.gnupg.options.meta_interactive = False
142
self.gnupg.options.homedir = self.tempdir
143
self.gnupg.options.extra_args.extend(['--force-mdc',
144
'--quiet'])
145
235
146
def __enter__(self):
236
147
return self
237
238
def __exit__(self, exc_type, exc_value, traceback):
148
149
def __exit__ (self, exc_type, exc_value, traceback):
239
150
self._cleanup()
240
151
return False
241
152
242
153
def __del__(self):
243
154
self._cleanup()
244
155
245
156
def _cleanup(self):
246
157
if self.tempdir is not None:
247
158
# Delete contents of tempdir
248
159
for root, dirs, files in os.walk(self.tempdir,
249
topdown=False):
160
topdown = False):
250
161
for filename in files:
251
162
os.remove(os.path.join(root, filename))
252
163
for dirname in dirs:
254
165
# Remove tempdir
255
166
os.rmdir(self.tempdir)
256
167
self.tempdir = None
257
168
258
169
def password_encode(self, password):
259
170
# Passphrase can not be empty and can not contain newlines or
260
171
# NUL bytes. So we prefix it and hex encode it.
261
encoded = b"mandos" + binascii.hexlify(password)
262
if len(encoded) > 2048:
263
# GnuPG can't handle long passwords, so encode differently
264
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
265
.replace(b"\n", b"\\n")
266
.replace(b"\0", b"\\x00"))
267
return encoded
268
172
return b"mandos" + binascii.hexlify(password)
173
269
174
def encrypt(self, data, password):
270
passphrase = self.password_encode(password)
271
with tempfile.NamedTemporaryFile(
272
dir=self.tempdir) as passfile:
273
passfile.write(passphrase)
274
passfile.flush()
275
proc = subprocess.Popen([self.gpg, '--symmetric',
276
'--passphrase-file',
277
passfile.name]
278
+ self.gnupgargs,
279
stdin=subprocess.PIPE,
280
stdout=subprocess.PIPE,
281
stderr=subprocess.PIPE)
282
ciphertext, err = proc.communicate(input=data)
283
if proc.returncode != 0:
284
raise PGPError(err)
175
self.gnupg.passphrase = self.password_encode(password)
176
with open(os.devnull) as devnull:
177
try:
178
proc = self.gnupg.run(['--symmetric'],
179
create_fhs=['stdin', 'stdout'],
180
attach_fhs={'stderr': devnull})
181
with contextlib.closing(proc.handles['stdin']) as f:
182
f.write(data)
183
with contextlib.closing(proc.handles['stdout']) as f:
184
ciphertext = f.read()
185
proc.wait()
186
except IOError as e:
187
raise CryptoError(e)
188
self.gnupg.passphrase = None
285
189
return ciphertext
286
190
287
191
def decrypt(self, data, password):
288
passphrase = self.password_encode(password)
289
with tempfile.NamedTemporaryFile(
290
dir=self.tempdir) as passfile:
291
passfile.write(passphrase)
292
passfile.flush()
293
proc = subprocess.Popen([self.gpg, '--decrypt',
294
'--passphrase-file',
295
passfile.name]
296
+ self.gnupgargs,
297
stdin=subprocess.PIPE,
298
stdout=subprocess.PIPE,
299
stderr=subprocess.PIPE)
300
decrypted_plaintext, err = proc.communicate(input=data)
301
if proc.returncode != 0:
302
raise PGPError(err)
192
self.gnupg.passphrase = self.password_encode(password)
193
with open(os.devnull) as devnull:
194
try:
195
proc = self.gnupg.run(['--decrypt'],
196
create_fhs=['stdin', 'stdout'],
197
attach_fhs={'stderr': devnull})
198
with contextlib.closing(proc.handles['stdin'] ) as f:
199
f.write(data)
200
with contextlib.closing(proc.handles['stdout']) as f:
201
decrypted_plaintext = f.read()
202
proc.wait()
203
except IOError as e:
204
raise CryptoError(e)
205
self.gnupg.passphrase = None
303
206
return decrypted_plaintext
304
207
305
208
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
209
332
210
class AvahiError(Exception):
333
211
def __init__(self, value, *args, **kwargs):
334
212
self.value = value
335
return super(AvahiError, self).__init__(value, *args,
336
**kwargs)
337
213
super(AvahiError, self).__init__(value, *args, **kwargs)
214
def __unicode__(self):
215
return unicode(repr(self.value))
338
216
339
217
class AvahiServiceError(AvahiError):
340
218
pass
341
219
342
343
220
class AvahiGroupError(AvahiError):
344
221
pass
345
222
346
223
347
class AvahiService:
224
class AvahiService(object):
348
225
"""An Avahi (Zeroconf) service.
349
226
350
227
Attributes:
351
228
interface: integer; avahi.IF_UNSPEC or an interface index.
352
229
Used to optionally bind to the specified interface.
353
230
name: string; Example: 'Mandos'
354
231
type: string; Example: '_mandos._tcp'.
355
See <https://www.iana.org/assignments/service-names-port-numbers>
232
See <http://www.dns-sd.org/ServiceTypes.html>
356
233
port: integer; what port to announce
357
234
TXT: list of strings; TXT record for the service
358
235
domain: string; Domain to publish on, default to .local if empty.
364
241
server: D-Bus Server
365
242
bus: dbus.SystemBus()
366
243
"""
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):
244
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
245
servicetype = None, port = None, TXT = None,
246
domain = "", host = "", max_renames = 32768,
247
protocol = avahi.PROTO_UNSPEC, bus = None):
379
248
self.interface = interface
380
249
self.name = name
381
250
self.type = servicetype
390
259
self.server = None
391
260
self.bus = bus
392
261
self.entry_group_state_changed_match = None
393
394
def rename(self, remove=True):
262
def rename(self):
395
263
"""Derived from the Avahi example code"""
396
264
if self.rename_count >= self.max_renames:
397
265
logger.critical("No suitable Zeroconf service name found"
398
266
" after %i retries, exiting.",
399
267
self.rename_count)
400
268
raise AvahiServiceError("Too many renames")
401
self.name = str(
402
self.server.GetAlternativeServiceName(self.name))
403
self.rename_count += 1
269
self.name = unicode(self.server
270
.GetAlternativeServiceName(self.name))
404
271
logger.info("Changing Zeroconf service name to %r ...",
405
272
self.name)
406
if remove:
407
self.remove()
273
self.remove()
408
274
try:
409
275
self.add()
410
276
except dbus.exceptions.DBusException as error:
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
277
logger.critical("DBusException: %s", error)
278
self.cleanup()
279
os._exit(1)
280
self.rename_count += 1
420
281
def remove(self):
421
282
"""Derived from the Avahi example code"""
422
283
if self.entry_group_state_changed_match is not None:
424
285
self.entry_group_state_changed_match = None
425
286
if self.group is not None:
426
287
self.group.Reset()
427
428
288
def add(self):
429
289
"""Derived from the Avahi example code"""
430
290
self.remove()
447
307
dbus.UInt16(self.port),
448
308
avahi.string_array_to_txt_array(self.TXT))
449
309
self.group.Commit()
450
451
310
def entry_group_state_changed(self, state, error):
452
311
"""Derived from the Avahi example code"""
453
312
logger.debug("Avahi entry group state change: %i", state)
454
313
455
314
if state == avahi.ENTRY_GROUP_ESTABLISHED:
456
315
logger.debug("Zeroconf service established.")
457
316
elif state == avahi.ENTRY_GROUP_COLLISION:
459
318
self.rename()
460
319
elif state == avahi.ENTRY_GROUP_FAILURE:
461
320
logger.critical("Avahi: Error in group state changed %s",
462
str(error))
463
raise AvahiGroupError("State changed: {!s}".format(error))
464
321
unicode(error))
322
raise AvahiGroupError("State changed: %s"
323
% unicode(error))
465
324
def cleanup(self):
466
325
"""Derived from the Avahi example code"""
467
326
if self.group is not None:
472
331
pass
473
332
self.group = None
474
333
self.remove()
475
476
334
def server_state_changed(self, state, error=None):
477
335
"""Derived from the Avahi example code"""
478
336
logger.debug("Avahi server state change: %i", state)
479
bad_states = {
480
avahi.SERVER_INVALID: "Zeroconf server invalid",
481
avahi.SERVER_REGISTERING: None,
482
avahi.SERVER_COLLISION: "Zeroconf server name collision",
483
avahi.SERVER_FAILURE: "Zeroconf server failure",
484
}
337
bad_states = { avahi.SERVER_INVALID:
338
"Zeroconf server invalid",
339
avahi.SERVER_REGISTERING: None,
340
avahi.SERVER_COLLISION:
341
"Zeroconf server name collision",
342
avahi.SERVER_FAILURE:
343
"Zeroconf server failure" }
485
344
if state in bad_states:
486
345
if bad_states[state] is not None:
487
346
if error is None:
490
349
logger.error(bad_states[state] + ": %r", error)
491
350
self.cleanup()
492
351
elif state == avahi.SERVER_RUNNING:
493
try:
494
self.add()
495
except dbus.exceptions.DBusException as error:
496
if (error.get_dbus_name()
497
== "org.freedesktop.Avahi.CollisionError"):
498
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)
352
self.add()
505
353
else:
506
354
if error is None:
507
355
logger.debug("Unknown state: %r", state)
508
356
else:
509
357
logger.debug("Unknown state: %r: %r", state, error)
510
511
358
def activate(self):
512
359
"""Derived from the Avahi example code"""
513
360
if self.server is None:
517
364
follow_name_owner_changes=True),
518
365
avahi.DBUS_INTERFACE_SERVER)
519
366
self.server.connect_to_signal("StateChanged",
520
self.server_state_changed)
367
self.server_state_changed)
521
368
self.server_state_changed(self.server.GetState())
522
369
523
524
370
class AvahiServiceToSyslog(AvahiService):
525
def rename(self, *args, **kwargs):
371
def rename(self):
526
372
"""Add the new name to the syslog messages"""
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)))
373
ret = AvahiService.rename(self)
374
syslogger.setFormatter(logging.Formatter
375
('Mandos (%s) [%%(process)d]:'
376
' %%(levelname)s: %%(message)s'
377
% self.name))
531
378
return ret
532
379
533
534
# Pretend that we have a GnuTLS module
535
class gnutls:
536
"""This isn't so much a class as it is a module-like namespace."""
537
538
library = ctypes.util.find_library("gnutls")
539
if library is None:
540
library = ctypes.util.find_library("gnutls-deb0")
541
_library = ctypes.cdll.LoadLibrary(library)
542
del library
543
544
# Unless otherwise indicated, the constants and types below are
545
# all from the gnutls/gnutls.h C header file.
546
547
# Constants
548
E_SUCCESS = 0
549
E_INTERRUPTED = -52
550
E_AGAIN = -28
551
CRT_OPENPGP = 2
552
CRT_RAWPK = 3
553
CLIENT = 2
554
SHUT_RDWR = 0
555
CRD_CERTIFICATE = 1
556
E_NO_CERTIFICATE_FOUND = -49
557
X509_FMT_DER = 0
558
NO_TICKETS = 1<<10
559
ENABLE_RAWPK = 1<<18
560
CTYPE_PEERS = 3
561
KEYID_USE_SHA256 = 1 # gnutls/x509.h
562
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
563
564
# Types
565
class session_int(ctypes.Structure):
566
_fields_ = []
567
session_t = ctypes.POINTER(session_int)
568
569
class certificate_credentials_st(ctypes.Structure):
570
_fields_ = []
571
certificate_credentials_t = ctypes.POINTER(
572
certificate_credentials_st)
573
certificate_type_t = ctypes.c_int
574
575
class datum_t(ctypes.Structure):
576
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
577
('size', ctypes.c_uint)]
578
579
class openpgp_crt_int(ctypes.Structure):
580
_fields_ = []
581
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
582
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
583
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
584
credentials_type_t = ctypes.c_int
585
transport_ptr_t = ctypes.c_void_p
586
close_request_t = ctypes.c_int
587
588
# Exceptions
589
class Error(Exception):
590
def __init__(self, message=None, code=None, args=()):
591
# Default usage is by a message string, but if a return
592
# code is passed, convert it to a string with
593
# gnutls.strerror()
594
self.code = code
595
if message is None and code is not None:
596
message = gnutls.strerror(code)
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:
380
def timedelta_to_milliseconds(td):
381
"Convert a datetime.timedelta() to milliseconds"
382
return ((td.days * 24 * 60 * 60 * 1000)
383
+ (td.seconds * 1000)
384
+ (td.microseconds // 1000))
385
386
class Client(object):
847
387
"""A representation of a client host served by this server.
848
388
849
389
Attributes:
850
390
approved: bool(); 'None' if not yet approved/disapproved
851
391
approval_delay: datetime.timedelta(); Time to wait for approval
852
392
approval_duration: datetime.timedelta(); Duration of one approval
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
393
checker: subprocess.Popen(); a running checker process used
394
to see if the client lives.
395
'None' if no process is running.
396
checker_callback_tag: a gobject event source tag, or None
857
397
checker_command: string; External command which is run to check
858
398
if client lives. %() expansions are done at
859
399
runtime with vars(self) as dict, so that for
860
400
instance %(name)s can be used in the command.
861
checker_initiator_tag: a GLib event source tag, or None
401
checker_initiator_tag: a gobject event source tag, or None
862
402
created: datetime.datetime(); (UTC) object creation
863
403
client_structure: Object describing what attributes a client has
864
404
and is used for storing the client at exit
865
405
current_checker_command: string; current running checker_command
866
disable_initiator_tag: a GLib event source tag, or None
406
disable_initiator_tag: a gobject event source tag, or None
867
407
enabled: bool()
868
408
fingerprint: string (40 or 32 hexadecimal digits); used to
869
uniquely identify an OpenPGP client
870
key_id: string (64 hexadecimal digits); used to uniquely identify
871
a client using raw public keys
409
uniquely identify the client
872
410
host: string; available for use by the checker command
873
411
interval: datetime.timedelta(); How often to start a new checker
874
412
last_approval_request: datetime.datetime(); (UTC) or None
875
413
last_checked_ok: datetime.datetime(); (UTC) or None
414
876
415
last_checker_status: integer between 0 and 255 reflecting exit
877
416
status of last checker. -1 reflects crashed
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
417
checker, or None.
881
418
last_enabled: datetime.datetime(); (UTC) or None
882
419
name: string; from the config file, used in log messages and
883
420
D-Bus identifiers
884
421
secret: bytestring; sent verbatim (over TLS) to client
885
422
timeout: datetime.timedelta(); How long from last_checked_ok
886
423
until this client is disabled
887
extended_timeout: extra long timeout when secret has been sent
424
extended_timeout: extra long timeout when password has been sent
888
425
runtime_expansions: Allowed attributes for runtime expansion.
889
426
expires: datetime.datetime(); time (UTC) when a client will be
890
427
disabled, or None
891
server_settings: The server_settings dict from main()
892
428
"""
893
429
894
430
runtime_expansions = ("approval_delay", "approval_duration",
895
"created", "enabled", "expires", "key_id",
896
"fingerprint", "host", "interval",
897
"last_approval_request", "last_checked_ok",
431
"created", "enabled", "fingerprint",
432
"host", "interval", "last_checked_ok",
898
433
"last_enabled", "name", "timeout")
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
911
@staticmethod
912
def config_parser(config):
913
"""Construct a new dict of client settings of this form:
914
{ client_name: {setting_name: value, ...}, ...}
915
with exceptions for any special settings as defined above.
916
NOTE: Must be a pure function. Must return the same result
917
value given the same arguments.
918
"""
919
settings = {}
920
for client_name in config.sections():
921
section = dict(config.items(client_name))
922
client = settings[client_name] = {}
923
924
client["host"] = section["host"]
925
# Reformat values from string types to Python types
926
client["approved_by_default"] = config.getboolean(
927
client_name, "approved_by_default")
928
client["enabled"] = config.getboolean(client_name,
929
"enabled")
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(" ", ""))
936
client["fingerprint"] = (section["fingerprint"].upper()
937
.replace(" ", ""))
938
if "secret" in section:
939
client["secret"] = codecs.decode(section["secret"]
940
.encode("utf-8"),
941
"base64")
942
elif "secfile" in section:
943
with open(os.path.expanduser(os.path.expandvars
944
(section["secfile"])),
945
"rb") as secfile:
946
client["secret"] = secfile.read()
947
else:
948
raise TypeError("No secret or secfile for section {}"
949
.format(section))
950
client["timeout"] = string_to_delta(section["timeout"])
951
client["extended_timeout"] = string_to_delta(
952
section["extended_timeout"])
953
client["interval"] = string_to_delta(section["interval"])
954
client["approval_delay"] = string_to_delta(
955
section["approval_delay"])
956
client["approval_duration"] = string_to_delta(
957
section["approval_duration"])
958
client["checker_command"] = section["checker"]
959
client["last_approval_request"] = None
960
client["last_checked_ok"] = None
961
client["last_checker_status"] = -2
962
963
return settings
964
965
def __init__(self, settings, name=None, server_settings=None):
434
435
def timeout_milliseconds(self):
436
"Return the 'timeout' attribute in milliseconds"
437
return timedelta_to_milliseconds(self.timeout)
438
439
def extended_timeout_milliseconds(self):
440
"Return the 'extended_timeout' attribute in milliseconds"
441
return timedelta_to_milliseconds(self.extended_timeout)
442
443
def interval_milliseconds(self):
444
"Return the 'interval' attribute in milliseconds"
445
return timedelta_to_milliseconds(self.interval)
446
447
def approval_delay_milliseconds(self):
448
return timedelta_to_milliseconds(self.approval_delay)
449
450
def __init__(self, name = None, config=None):
451
"""Note: the 'checker' key in 'config' sets the
452
'checker_command' attribute and *not* the 'checker'
453
attribute."""
966
454
self.name = name
967
if server_settings is None:
968
server_settings = {}
969
self.server_settings = server_settings
970
# adding all client settings
971
for setting, value in settings.items():
972
setattr(self, setting, value)
973
974
if self.enabled:
975
if not hasattr(self, "last_enabled"):
976
self.last_enabled = datetime.datetime.utcnow()
977
if not hasattr(self, "expires"):
978
self.expires = (datetime.datetime.utcnow()
979
+ self.timeout)
980
else:
981
self.last_enabled = None
982
self.expires = None
983
455
if config is None:
456
config = {}
984
457
logger.debug("Creating client %r", self.name)
985
logger.debug(" Key ID: %s", self.key_id)
458
# Uppercase and remove spaces from fingerprint for later
459
# comparison purposes with return value from the fingerprint()
460
# function
461
self.fingerprint = (config["fingerprint"].upper()
462
.replace(" ", ""))
986
463
logger.debug(" Fingerprint: %s", self.fingerprint)
987
self.created = settings.get("created",
988
datetime.datetime.utcnow())
989
990
# attributes specific for this server instance
464
if "secret" in config:
465
self.secret = config["secret"].decode("base64")
466
elif "secfile" in config:
467
with open(os.path.expanduser(os.path.expandvars
468
(config["secfile"])),
469
"rb") as secfile:
470
self.secret = secfile.read()
471
else:
472
raise TypeError("No secret or secfile for client %s"
473
% self.name)
474
self.host = config.get("host", "")
475
self.created = datetime.datetime.utcnow()
476
self.enabled = config.get("enabled", True)
477
self.last_approval_request = None
478
if self.enabled:
479
self.last_enabled = datetime.datetime.utcnow()
480
else:
481
self.last_enabled = None
482
self.last_checked_ok = None
483
self.last_checker_status = None
484
self.timeout = string_to_delta(config["timeout"])
485
self.extended_timeout = string_to_delta(config
486
["extended_timeout"])
487
self.interval = string_to_delta(config["interval"])
991
488
self.checker = None
992
489
self.checker_initiator_tag = None
993
490
self.disable_initiator_tag = None
491
if self.enabled:
492
self.expires = datetime.datetime.utcnow() + self.timeout
493
else:
494
self.expires = None
994
495
self.checker_callback_tag = None
496
self.checker_command = config["checker"]
995
497
self.current_checker_command = None
996
498
self.approved = None
499
self.approved_by_default = config.get("approved_by_default",
500
True)
997
501
self.approvals_pending = 0
998
self.changedstate = multiprocessing_manager.Condition(
999
multiprocessing_manager.Lock())
1000
self.client_structure = [attr
1001
for attr in self.__dict__.keys()
502
self.approval_delay = string_to_delta(
503
config["approval_delay"])
504
self.approval_duration = string_to_delta(
505
config["approval_duration"])
506
self.changedstate = (multiprocessing_manager
507
.Condition(multiprocessing_manager
508
.Lock()))
509
self.client_structure = [attr for attr in
510
self.__dict__.iterkeys()
1002
511
if not attr.startswith("_")]
1003
512
self.client_structure.append("client_structure")
1004
1005
for name, t in inspect.getmembers(
1006
type(self), lambda obj: isinstance(obj, property)):
513
514
for name, t in inspect.getmembers(type(self),
515
lambda obj:
516
isinstance(obj,
517
property)):
1007
518
if not name.startswith("_"):
1008
519
self.client_structure.append(name)
1009
520
1010
521
# Send notice to process children that client state has changed
1011
522
def send_changedstate(self):
1012
523
with self.changedstate:
1013
524
self.changedstate.notify_all()
1014
525
1015
526
def enable(self):
1016
527
"""Start this client's checker and timeout hooks"""
1017
528
if getattr(self, "enabled", False):
1018
529
# Already enabled
1019
530
return
531
self.send_changedstate()
1020
532
self.expires = datetime.datetime.utcnow() + self.timeout
1021
533
self.enabled = True
1022
534
self.last_enabled = datetime.datetime.utcnow()
1023
535
self.init_checker()
1024
self.send_changedstate()
1025
536
1026
537
def disable(self, quiet=True):
1027
538
"""Disable this client."""
1028
539
if not getattr(self, "enabled", False):
1029
540
return False
1030
541
if not quiet:
542
self.send_changedstate()
543
if not quiet:
1031
544
logger.info("Disabling client %s", self.name)
1032
if getattr(self, "disable_initiator_tag", None) is not None:
1033
GLib.source_remove(self.disable_initiator_tag)
545
if getattr(self, "disable_initiator_tag", False):
546
gobject.source_remove(self.disable_initiator_tag)
1034
547
self.disable_initiator_tag = None
1035
548
self.expires = None
1036
if getattr(self, "checker_initiator_tag", None) is not None:
1037
GLib.source_remove(self.checker_initiator_tag)
549
if getattr(self, "checker_initiator_tag", False):
550
gobject.source_remove(self.checker_initiator_tag)
1038
551
self.checker_initiator_tag = None
1039
552
self.stop_checker()
1040
553
self.enabled = False
1041
if not quiet:
1042
self.send_changedstate()
1043
# Do not run this again if called by a GLib.timeout_add
554
# Do not run this again if called by a gobject.timeout_add
1044
555
return False
1045
556
1046
557
def __del__(self):
1047
558
self.disable()
1048
559
1049
560
def init_checker(self):
1050
561
# Schedule a new checker to be started an 'interval' from now,
1051
562
# and every interval from then on.
1052
if self.checker_initiator_tag is not None:
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)
563
self.checker_initiator_tag = (gobject.timeout_add
564
(self.interval_milliseconds(),
565
self.start_checker))
1058
566
# Schedule a disable() when 'timeout' has passed
1059
if self.disable_initiator_tag is not None:
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)
567
self.disable_initiator_tag = (gobject.timeout_add
568
(self.timeout_milliseconds(),
569
self.disable))
1063
570
# Also start a new checker *right now*.
1064
571
self.start_checker()
1065
1066
def checker_callback(self, source, condition, connection,
1067
command):
572
573
def checker_callback(self, pid, condition, command):
1068
574
"""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()
1074
575
self.checker_callback_tag = None
1075
576
self.checker = None
1076
1077
if returncode >= 0:
1078
self.last_checker_status = returncode
1079
self.last_checker_signal = None
577
if os.WIFEXITED(condition):
578
self.last_checker_status = os.WEXITSTATUS(condition)
1080
579
if self.last_checker_status == 0:
1081
580
logger.info("Checker for %(name)s succeeded",
1082
581
vars(self))
1083
582
self.checked_ok()
1084
583
else:
1085
logger.info("Checker for %(name)s failed", vars(self))
584
logger.info("Checker for %(name)s failed",
585
vars(self))
1086
586
else:
1087
587
self.last_checker_status = -1
1088
self.last_checker_signal = -returncode
1089
588
logger.warning("Checker for %(name)s crashed?",
1090
589
vars(self))
1091
return False
1092
1093
def checked_ok(self):
1094
"""Assert that the client has been seen, alive and well."""
1095
self.last_checked_ok = datetime.datetime.utcnow()
1096
self.last_checker_status = 0
1097
self.last_checker_signal = None
1098
self.bump_timeout()
1099
1100
def bump_timeout(self, timeout=None):
1101
"""Bump up the timeout for this client."""
590
591
def checked_ok(self, timeout=None):
592
"""Bump up the timeout for this client.
593
594
This should only be called when the client has been seen,
595
alive and well.
596
"""
1102
597
if timeout is None:
1103
598
timeout = self.timeout
599
self.last_checked_ok = datetime.datetime.utcnow()
1104
600
if self.disable_initiator_tag is not None:
1105
GLib.source_remove(self.disable_initiator_tag)
1106
self.disable_initiator_tag = None
601
gobject.source_remove(self.disable_initiator_tag)
1107
602
if getattr(self, "enabled", False):
1108
self.disable_initiator_tag = GLib.timeout_add(
1109
int(timeout.total_seconds() * 1000), self.disable)
603
self.disable_initiator_tag = (gobject.timeout_add
604
(timedelta_to_milliseconds
605
(timeout), self.disable))
1110
606
self.expires = datetime.datetime.utcnow() + timeout
1111
607
1112
608
def need_approval(self):
1113
609
self.last_approval_request = datetime.datetime.utcnow()
1114
610
1115
611
def start_checker(self):
1116
612
"""Start a new checker subprocess if one is not running.
1117
613
1118
614
If a checker already exists, leave it running and do
1119
615
nothing."""
1120
616
# The reason for not killing a running checker is that if we
1121
# did that, and if a checker (for some reason) started running
1122
# slowly and taking more than 'interval' time, then the client
1123
# would inevitably timeout, since no checker would get a
1124
# chance to run to completion. If we instead leave running
617
# did that, then if a checker (for some reason) started
618
# running slowly and taking more than 'interval' time, the
619
# client would inevitably timeout, since no checker would get
620
# a chance to run to completion. If we instead leave running
1125
621
# checkers alone, the checker would have to take more time
1126
622
# than 'timeout' for the client to be disabled, which is as it
1127
623
# should be.
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
624
625
# If a checker exists, make sure it is not a zombie
626
try:
627
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
628
except (AttributeError, OSError) as error:
629
if (isinstance(error, OSError)
630
and error.errno != errno.ECHILD):
631
raise error
632
else:
633
if pid:
634
logger.warning("Checker was a zombie")
635
gobject.source_remove(self.checker_callback_tag)
636
self.checker_callback(pid, status,
637
self.current_checker_command)
1133
638
# Start a new checker if needed
1134
639
if self.checker is None:
1135
# Escape attributes for the shell
1136
escaped_attrs = {
1137
attr: shlex.quote(str(getattr(self, attr)))
1138
for attr in self.runtime_expansions}
1139
640
try:
1140
command = self.checker_command % escaped_attrs
1141
except TypeError as error:
1142
logger.error('Could not format string "%s"',
1143
self.checker_command,
1144
exc_info=error)
1145
return True # Try again later
641
# In case checker_command has exactly one % operator
642
command = self.checker_command % self.host
643
except TypeError:
644
# Escape attributes for the shell
645
escaped_attrs = dict(
646
(attr,
647
re.escape(unicode(str(getattr(self, attr, "")),
648
errors=
649
'replace')))
650
for attr in
651
self.runtime_expansions)
652
653
try:
654
command = self.checker_command % escaped_attrs
655
except TypeError as error:
656
logger.error('Could not format string "%s":'
657
' %s', self.checker_command, error)
658
return True # Try again later
1146
659
self.current_checker_command = command
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
660
try:
661
logger.info("Starting checker %r for %s",
662
command, self.name)
663
# We don't need to redirect stdout and stderr, since
664
# in normal mode, that is already done by daemon(),
665
# and in debug mode we don't want to. (Stdin is
666
# always replaced by /dev/null.)
667
self.checker = subprocess.Popen(command,
668
close_fds=True,
669
shell=True, cwd="/")
670
self.checker_callback_tag = (gobject.child_watch_add
671
(self.checker.pid,
672
self.checker_callback,
673
data=command))
674
# The checker may have completed before the gobject
675
# watch was added. Check for this.
676
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
677
if pid:
678
gobject.source_remove(self.checker_callback_tag)
679
self.checker_callback(pid, status, command)
680
except OSError as error:
681
logger.error("Failed to start subprocess: %s",
682
error)
683
# Re-run this periodically if run by gobject.timeout_add
1174
684
return True
1175
685
1176
686
def stop_checker(self):
1177
687
"""Force the checker process, if any, to stop."""
1178
688
if self.checker_callback_tag:
1179
GLib.source_remove(self.checker_callback_tag)
689
gobject.source_remove(self.checker_callback_tag)
1180
690
self.checker_callback_tag = None
1181
691
if getattr(self, "checker", None) is None:
1182
692
return
1183
693
logger.debug("Stopping checker for %(name)s", vars(self))
1184
self.checker.terminate()
694
try:
695
os.kill(self.checker.pid, signal.SIGTERM)
696
#time.sleep(0.5)
697
#if self.checker.poll() is None:
698
# os.kill(self.checker.pid, signal.SIGKILL)
699
except OSError as error:
700
if error.errno != errno.ESRCH: # No such process
701
raise
1185
702
self.checker = None
1186
703
1187
704
1188
def dbus_service_property(dbus_interface,
1189
signature="v",
1190
access="readwrite",
1191
byte_arrays=False):
705
def dbus_service_property(dbus_interface, signature="v",
706
access="readwrite", byte_arrays=False):
1192
707
"""Decorators for marking methods of a DBusObjectWithProperties to
1193
708
become properties on the D-Bus.
1194
709
1195
710
The decorated method will be called with no arguments by "Get"
1196
711
and with one argument by "Set".
1197
712
1198
713
The parameters, where they are supported, are the same as
1199
714
dbus.service.method, except there is only "signature", since the
1200
715
type from Get() and the type sent to Set() is the same.
1203
718
# "Set" method, so we fail early here:
1204
719
if byte_arrays and signature != "ay":
1205
720
raise ValueError("Byte arrays not supported for non-'ay'"
1206
" signature {!r}".format(signature))
1207
721
" signature %r" % signature)
1208
722
def decorator(func):
1209
723
func._dbus_is_property = True
1210
724
func._dbus_interface = dbus_interface
1213
727
func._dbus_name = func.__name__
1214
728
if func._dbus_name.endswith("_dbus_property"):
1215
729
func._dbus_name = func._dbus_name[:-14]
1216
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1217
return func
1218
1219
return decorator
1220
1221
1222
def dbus_interface_annotations(dbus_interface):
1223
"""Decorator for marking functions returning interface annotations
1224
1225
Usage:
1226
1227
@dbus_interface_annotations("org.example.Interface")
1228
def _foo(self): # Function name does not matter
1229
return {"org.freedesktop.DBus.Deprecated": "true",
1230
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1231
"false"}
1232
"""
1233
1234
def decorator(func):
1235
func._dbus_is_interface = True
1236
func._dbus_interface = dbus_interface
1237
func._dbus_name = dbus_interface
1238
return func
1239
1240
return decorator
1241
1242
1243
def dbus_annotations(annotations):
1244
"""Decorator to annotate D-Bus methods, signals or properties
1245
Usage:
1246
1247
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1248
"org.freedesktop.DBus.Property."
1249
"EmitsChangedSignal": "false"})
1250
@dbus_service_property("org.example.Interface", signature="b",
1251
access="r")
1252
def Property_dbus_property(self):
1253
return dbus.Boolean(False)
1254
1255
See also the DBusObjectWithAnnotations class.
1256
"""
1257
1258
def decorator(func):
1259
func._dbus_annotations = annotations
1260
return func
1261
730
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
731
return func
1262
732
return decorator
1263
733
1264
734
1265
735
class DBusPropertyException(dbus.exceptions.DBusException):
1266
736
"""A base class for D-Bus property-related exceptions
1267
737
"""
1268
pass
738
def __unicode__(self):
739
return unicode(str(self))
1269
740
1270
741
1271
742
class DBusPropertyAccessException(DBusPropertyException):
1280
751
pass
1281
752
1282
753
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.
1288
"""
1289
1290
@staticmethod
1291
def _is_dbus_thing(thing):
1292
"""Returns a function testing if an attribute is a D-Bus thing
1293
1294
If called like _is_dbus_thing("method") it returns a function
1295
suitable for use as predicate to inspect.getmembers().
1296
"""
1297
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1298
False)
1299
1300
def _get_all_dbus_things(self, thing):
1301
"""Returns a generator of (name, attribute) pairs
1302
"""
1303
return ((getattr(athing.__get__(self), "_dbus_name", name),
1304
athing.__get__(self))
1305
for cls in self.__class__.__mro__
1306
for name, athing in
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):
754
class DBusObjectWithProperties(dbus.service.Object):
1373
755
"""A D-Bus object with properties.
1374
756
1375
757
Classes inheriting from this can use the dbus_service_property
1376
758
decorator to expose methods as D-Bus properties. It exposes the
1377
759
standard Get(), Set(), and GetAll() methods on the D-Bus.
1378
760
"""
1379
761
762
@staticmethod
763
def _is_dbus_property(obj):
764
return getattr(obj, "_dbus_is_property", False)
765
766
def _get_all_dbus_properties(self):
767
"""Returns a generator of (name, attribute) pairs
768
"""
769
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
770
for cls in self.__class__.__mro__
771
for name, prop in
772
inspect.getmembers(cls, self._is_dbus_property))
773
1380
774
def _get_dbus_property(self, interface_name, property_name):
1381
775
"""Returns a bound method if one exists which is a D-Bus
1382
776
property with the specified name and interface.
1383
777
"""
1384
for cls in self.__class__.__mro__:
1385
for name, value in inspect.getmembers(
1386
cls, self._is_dbus_thing("property")):
778
for cls in self.__class__.__mro__:
779
for name, value in (inspect.getmembers
780
(cls, self._is_dbus_property)):
1387
781
if (value._dbus_name == property_name
1388
782
and value._dbus_interface == interface_name):
1389
783
return value.__get__(self)
1390
784
1391
785
# No such property
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",
786
raise DBusPropertyNotFound(self.dbus_object_path + ":"
787
+ interface_name + "."
788
+ property_name)
789
790
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1406
791
out_signature="v")
1407
792
def Get(self, interface_name, property_name):
1408
793
"""Standard D-Bus property Get() method, see D-Bus standard.
1414
799
if not hasattr(value, "variant_level"):
1415
800
return value
1416
801
return type(value)(value, variant_level=value.variant_level+1)
1417
802
1418
803
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1419
804
def Set(self, interface_name, property_name, value):
1420
805
"""Standard D-Bus property Set() method, see D-Bus standard.
1426
811
# The byte_arrays option is not supported yet on
1427
812
# signatures other than "ay".
1428
813
if prop._dbus_signature != "ay":
1429
raise ValueError("Byte arrays not supported for non-"
1430
"'ay' signature {!r}"
1431
.format(prop._dbus_signature))
1432
value = dbus.ByteArray(bytes(value))
814
raise ValueError
815
value = dbus.ByteArray(''.join(unichr(byte)
816
for byte in value))
1433
817
prop(value)
1434
1435
@dbus.service.method(dbus.PROPERTIES_IFACE,
1436
in_signature="s",
818
819
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1437
820
out_signature="a{sv}")
1438
821
def GetAll(self, interface_name):
1439
822
"""Standard D-Bus property GetAll() method, see D-Bus
1440
823
standard.
1441
824
1442
825
Note: Will not include properties with access="write".
1443
826
"""
1444
827
properties = {}
1445
for name, prop in self._get_all_dbus_things("property"):
828
for name, prop in self._get_all_dbus_properties():
1446
829
if (interface_name
1447
830
and interface_name != prop._dbus_interface):
1448
831
# Interface non-empty but did not match
1454
837
if not hasattr(value, "variant_level"):
1455
838
properties[name] = value
1456
839
continue
1457
properties[name] = type(value)(
1458
value, variant_level=value.variant_level + 1)
840
properties[name] = type(value)(value, variant_level=
841
value.variant_level+1)
1459
842
return dbus.Dictionary(properties, signature="sv")
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
843
1469
844
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1470
845
out_signature="s",
1471
846
path_keyword='object_path',
1472
847
connection_keyword='connection')
1473
848
def Introspect(self, object_path, connection):
1474
"""Overloading of standard D-Bus method.
1475
1476
Inserts property tags and interface annotation tags.
849
"""Standard D-Bus method, overloaded to insert property tags.
1477
850
"""
1478
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1479
object_path,
1480
connection)
851
xmlstring = dbus.service.Object.Introspect(self, object_path,
852
connection)
1481
853
try:
1482
854
document = xml.dom.minidom.parseString(xmlstring)
1483
1484
855
def make_tag(document, name, prop):
1485
856
e = document.createElement("property")
1486
857
e.setAttribute("name", name)
1487
858
e.setAttribute("type", prop._dbus_signature)
1488
859
e.setAttribute("access", prop._dbus_access)
1489
860
return e
1490
1491
861
for if_tag in document.getElementsByTagName("interface"):
1492
# Add property tags
1493
862
for tag in (make_tag(document, name, prop)
1494
863
for name, prop
1495
in self._get_all_dbus_things("property")
864
in self._get_all_dbus_properties()
1496
865
if prop._dbus_interface
1497
866
== if_tag.getAttribute("name")):
1498
867
if_tag.appendChild(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)
1515
868
# Add the names to the return values for the
1516
869
# "org.freedesktop.DBus.Properties" methods
1517
870
if (if_tag.getAttribute("name")
1532
885
except (AttributeError, xml.dom.DOMException,
1533
886
xml.parsers.expat.ExpatError) as error:
1534
887
logger.error("Failed to override Introspection method",
1535
exc_info=error)
1536
return xmlstring
1537
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
1610
def datetime_to_dbus(dt, variant_level=0):
888
error)
889
return xmlstring
890
891
892
def datetime_to_dbus (dt, variant_level=0):
1611
893
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1612
894
if dt is None:
1613
return dbus.String("", variant_level=variant_level)
1614
return dbus.String(dt.isoformat(), variant_level=variant_level)
1615
1616
1617
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1618
"""A class decorator; applied to a subclass of
1619
dbus.service.Object, it will add alternate D-Bus attributes with
1620
interface names according to the "alt_interface_names" mapping.
1621
Usage:
1622
1623
@alternate_dbus_interfaces({"org.example.Interface":
1624
"net.example.AlternateInterface"})
1625
class SampleDBusObject(dbus.service.Object):
1626
@dbus.service.method("org.example.Interface")
1627
def SampleDBusMethod():
1628
pass
1629
1630
The above "SampleDBusMethod" on "SampleDBusObject" will be
1631
reachable via two interfaces: "org.example.Interface" and
1632
"net.example.AlternateInterface", the latter of which will have
1633
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1634
"true", unless "deprecate" is passed with a False value.
1635
1636
This works for methods and signals, and also for D-Bus properties
1637
(from DBusObjectWithProperties) and interfaces (from the
1638
dbus_interface_annotations decorator).
895
return dbus.String("", variant_level = variant_level)
896
return dbus.String(dt.isoformat(),
897
variant_level=variant_level)
898
899
900
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
901
.__metaclass__):
902
"""Applied to an empty subclass of a D-Bus object, this metaclass
903
will add additional D-Bus attributes matching a certain pattern.
1639
904
"""
1640
1641
def wrapper(cls):
1642
for orig_interface_name, alt_interface_name in (
1643
alt_interface_names.items()):
1644
attr = {}
1645
interface_names = set()
1646
# Go though all attributes of the class
1647
for attrname, attribute in inspect.getmembers(cls):
905
def __new__(mcs, name, bases, attr):
906
# Go through all the base classes which could have D-Bus
907
# methods, signals, or properties in them
908
for base in (b for b in bases
909
if issubclass(b, dbus.service.Object)):
910
# Go though all attributes of the base class
911
for attrname, attribute in inspect.getmembers(base):
1648
912
# Ignore non-D-Bus attributes, and D-Bus attributes
1649
913
# with the wrong interface name
1650
914
if (not hasattr(attribute, "_dbus_interface")
1651
or not attribute._dbus_interface.startswith(
1652
orig_interface_name)):
915
or not attribute._dbus_interface
916
.startswith("se.recompile.Mandos")):
1653
917
continue
1654
918
# Create an alternate D-Bus interface name based on
1655
919
# the current name
1656
alt_interface = attribute._dbus_interface.replace(
1657
orig_interface_name, alt_interface_name)
1658
interface_names.add(alt_interface)
920
alt_interface = (attribute._dbus_interface
921
.replace("se.recompile.Mandos",
922
"se.bsnet.fukt.Mandos"))
1659
923
# Is this a D-Bus signal?
1660
924
if getattr(attribute, "_dbus_is_signal", False):
1661
# Extract the original non-method undecorated
1662
# function by black magic
1663
if sys.version_info.major == 2:
1664
nonmethod_func = (dict(
925
# Extract the original non-method function by
926
# black magic
927
nonmethod_func = (dict(
1665
928
zip(attribute.func_code.co_freevars,
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)
929
attribute.__closure__))["func"]
930
.cell_contents)
1673
931
# Create a new, but exactly alike, function
1674
932
# object, and decorate it to be a new D-Bus signal
1675
933
# with the alternate D-Bus interface name
1676
new_function = copy_function(nonmethod_func)
1677
new_function = (dbus.service.signal(
1678
alt_interface,
1679
attribute._dbus_signature)(new_function))
1680
# Copy annotations, if any
1681
try:
1682
new_function._dbus_annotations = dict(
1683
attribute._dbus_annotations)
1684
except AttributeError:
1685
pass
1686
934
new_function = (dbus.service.signal
935
(alt_interface,
936
attribute._dbus_signature)
937
(types.FunctionType(
938
nonmethod_func.func_code,
939
nonmethod_func.func_globals,
940
nonmethod_func.func_name,
941
nonmethod_func.func_defaults,
942
nonmethod_func.func_closure)))
1687
943
# Define a creator of a function to call both the
1688
# original and alternate functions, so both the
1689
# original and alternate signals gets sent when
1690
# the function is called
944
# old and new functions, so both the old and new
945
# signals gets sent when the function is called
1691
946
def fixscope(func1, func2):
1692
947
"""This function is a scope container to pass
1693
948
func1 and func2 to the "call_both" function
1694
949
outside of its arguments"""
1695
1696
@functools.wraps(func2)
1697
950
def call_both(*args, **kwargs):
1698
951
"""This function will emit two D-Bus
1699
952
signals by calling func1 and func2"""
1700
953
func1(*args, **kwargs)
1701
954
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
1708
955
return call_both
1709
956
# Create the "call_both" function and add it to
1710
957
# the class
1711
attr[attrname] = fixscope(attribute, new_function)
958
attr[attrname] = fixscope(attribute,
959
new_function)
1712
960
# Is this a D-Bus method?
1713
961
elif getattr(attribute, "_dbus_is_method", False):
1714
962
# Create a new, but exactly alike, function
1715
963
# object. Decorate it to be a new D-Bus method
1716
964
# with the alternate D-Bus interface name. Add it
1717
965
# to the class.
1718
attr[attrname] = (
1719
dbus.service.method(
1720
alt_interface,
1721
attribute._dbus_in_signature,
1722
attribute._dbus_out_signature)
1723
(copy_function(attribute)))
1724
# Copy annotations, if any
1725
try:
1726
attr[attrname]._dbus_annotations = dict(
1727
attribute._dbus_annotations)
1728
except AttributeError:
1729
pass
966
attr[attrname] = (dbus.service.method
967
(alt_interface,
968
attribute._dbus_in_signature,
969
attribute._dbus_out_signature)
970
(types.FunctionType
971
(attribute.func_code,
972
attribute.func_globals,
973
attribute.func_name,
974
attribute.func_defaults,
975
attribute.func_closure)))
1730
976
# Is this a D-Bus property?
1731
977
elif getattr(attribute, "_dbus_is_property", False):
1732
978
# Create a new, but exactly alike, function
1733
979
# object, and decorate it to be a new D-Bus
1734
980
# property with the alternate D-Bus interface
1735
981
# name. Add it to the class.
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)))
1742
# Copy annotations, if any
1743
try:
1744
attr[attrname]._dbus_annotations = dict(
1745
attribute._dbus_annotations)
1746
except AttributeError:
1747
pass
1748
# Is this a D-Bus interface?
1749
elif getattr(attribute, "_dbus_is_interface", False):
1750
# Create a new, but exactly alike, function
1751
# object. Decorate it to be a new D-Bus interface
1752
# with the alternate D-Bus interface name. Add it
1753
# to the class.
1754
attr[attrname] = (
1755
dbus_interface_annotations(alt_interface)
1756
(copy_function(attribute)))
1757
if deprecate:
1758
# Deprecate all alternate interfaces
1759
iname = "_AlternateDBusNames_interface_annotation{}"
1760
for interface_name in interface_names:
1761
1762
@dbus_interface_annotations(interface_name)
1763
def func(self):
1764
return {"org.freedesktop.DBus.Deprecated":
1765
"true"}
1766
# Find an unused name
1767
for aname in (iname.format(i)
1768
for i in itertools.count()):
1769
if aname not in attr:
1770
attr[aname] = func
1771
break
1772
if interface_names:
1773
# Replace the class with a new subclass of it with
1774
# methods, signals, etc. as created above.
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)
1781
return cls
1782
1783
return wrapper
1784
1785
1786
@alternate_dbus_interfaces({"se.recompile.Mandos":
1787
"se.bsnet.fukt.Mandos"})
982
attr[attrname] = (dbus_service_property
983
(alt_interface,
984
attribute._dbus_signature,
985
attribute._dbus_access,
986
attribute
987
._dbus_get_args_options
988
["byte_arrays"])
989
(types.FunctionType
990
(attribute.func_code,
991
attribute.func_globals,
992
attribute.func_name,
993
attribute.func_defaults,
994
attribute.func_closure)))
995
return type.__new__(mcs, name, bases, attr)
996
997
1788
998
class ClientDBus(Client, DBusObjectWithProperties):
1789
999
"""A Client class using D-Bus
1790
1000
1791
1001
Attributes:
1792
1002
dbus_object_path: dbus.ObjectPath
1793
1003
bus: dbus.SystemBus()
1794
1004
"""
1795
1005
1796
1006
runtime_expansions = (Client.runtime_expansions
1797
+ ("dbus_object_path", ))
1798
1799
_interface = "se.recompile.Mandos.Client"
1800
1007
+ ("dbus_object_path",))
1008
1801
1009
# dbus.service.Object doesn't use super(), so we can't either.
1802
1803
def __init__(self, bus=None, *args, **kwargs):
1010
1011
def __init__(self, bus = None, *args, **kwargs):
1804
1012
self.bus = bus
1805
1013
Client.__init__(self, *args, **kwargs)
1014
1015
self._approvals_pending = 0
1806
1016
# Only now, when this client is initialized, can it show up on
1807
1017
# the D-Bus
1808
client_object_name = str(self.name).translate(
1018
client_object_name = unicode(self.name).translate(
1809
1019
{ord("."): ord("_"),
1810
1020
ord("-"): ord("_")})
1811
self.dbus_object_path = dbus.ObjectPath(
1812
"/clients/" + client_object_name)
1021
self.dbus_object_path = (dbus.ObjectPath
1022
("/clients/" + client_object_name))
1813
1023
DBusObjectWithProperties.__init__(self, self.bus,
1814
1024
self.dbus_object_path)
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):
1025
1026
def notifychangeproperty(transform_func,
1027
dbus_name, type_func=lambda x: x,
1028
variant_level=1):
1821
1029
""" Modify a variable so that it's a property which announces
1822
1030
its changes to DBus.
1823
1031
1824
1032
transform_fun: Function that takes a value and a variant_level
1825
1033
and transforms it to a D-Bus type.
1826
1034
dbus_name: D-Bus name of the variable
1828
1036
to the D-Bus. Default: no transform
1829
1037
variant_level: D-Bus variant level. Default: 1
1830
1038
"""
1831
attrname = "_{}".format(dbus_name)
1832
1039
attrname = "_{0}".format(dbus_name)
1833
1040
def setter(self, value):
1834
1041
if hasattr(self, "dbus_object_path"):
1835
1042
if (not hasattr(self, attrname) or
1836
1043
type_func(getattr(self, attrname, None))
1837
1044
!= type_func(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())
1045
dbus_value = transform_func(type_func(value),
1046
variant_level
1047
=variant_level)
1048
self.PropertyChanged(dbus.String(dbus_name),
1049
dbus_value)
1853
1050
setattr(self, attrname, value)
1854
1051
1855
1052
return property(lambda self: getattr(self, attrname), setter)
1856
1053
1054
1857
1055
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1858
1056
approvals_pending = notifychangeproperty(dbus.Boolean,
1859
1057
"ApprovalPending",
1860
type_func=bool)
1058
type_func = bool)
1861
1059
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1862
1060
last_enabled = notifychangeproperty(datetime_to_dbus,
1863
1061
"LastEnabled")
1864
checker = notifychangeproperty(
1865
dbus.Boolean, "CheckerRunning",
1866
type_func=lambda checker: checker is not None)
1062
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1063
type_func = lambda checker:
1064
checker is not None)
1867
1065
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1868
1066
"LastCheckedOK")
1869
last_checker_status = notifychangeproperty(dbus.Int16,
1870
"LastCheckerStatus")
1871
1067
last_approval_request = notifychangeproperty(
1872
1068
datetime_to_dbus, "LastApprovalRequest")
1873
1069
approved_by_default = notifychangeproperty(dbus.Boolean,
1874
1070
"ApprovedByDefault")
1875
approval_delay = notifychangeproperty(
1876
dbus.UInt64, "ApprovalDelay",
1877
type_func=lambda td: td.total_seconds() * 1000)
1071
approval_delay = notifychangeproperty(dbus.UInt16,
1072
"ApprovalDelay",
1073
type_func =
1074
timedelta_to_milliseconds)
1878
1075
approval_duration = notifychangeproperty(
1879
dbus.UInt64, "ApprovalDuration",
1880
type_func=lambda td: td.total_seconds() * 1000)
1076
dbus.UInt16, "ApprovalDuration",
1077
type_func = timedelta_to_milliseconds)
1881
1078
host = notifychangeproperty(dbus.String, "Host")
1882
timeout = notifychangeproperty(
1883
dbus.UInt64, "Timeout",
1884
type_func=lambda td: td.total_seconds() * 1000)
1079
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1080
type_func =
1081
timedelta_to_milliseconds)
1885
1082
extended_timeout = notifychangeproperty(
1886
dbus.UInt64, "ExtendedTimeout",
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)
1083
dbus.UInt16, "ExtendedTimeout",
1084
type_func = timedelta_to_milliseconds)
1085
interval = notifychangeproperty(dbus.UInt16,
1086
"Interval",
1087
type_func =
1088
timedelta_to_milliseconds)
1891
1089
checker_command = notifychangeproperty(dbus.String, "Checker")
1892
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1893
invalidate_only=True)
1894
1090
1895
1091
del notifychangeproperty
1896
1092
1897
1093
def __del__(self, *args, **kwargs):
1898
1094
try:
1899
1095
self.remove_from_connection()
1902
1098
if hasattr(DBusObjectWithProperties, "__del__"):
1903
1099
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1904
1100
Client.__del__(self, *args, **kwargs)
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:
1101
1102
def checker_callback(self, pid, condition, command,
1103
*args, **kwargs):
1104
self.checker_callback_tag = None
1105
self.checker = None
1106
if os.WIFEXITED(condition):
1107
exitstatus = os.WEXITSTATUS(condition)
1913
1108
# Emit D-Bus signal
1914
1109
self.CheckerCompleted(dbus.Int16(exitstatus),
1915
# This is specific to GNU libC
1916
dbus.Int64(exitstatus << 8),
1110
dbus.Int64(condition),
1917
1111
dbus.String(command))
1918
1112
else:
1919
1113
# Emit D-Bus signal
1920
1114
self.CheckerCompleted(dbus.Int16(-1),
1921
dbus.Int64(
1922
# This is specific to GNU libC
1923
(exitstatus << 8)
1924
| self.last_checker_signal),
1115
dbus.Int64(condition),
1925
1116
dbus.String(command))
1926
return ret
1927
1117
1118
return Client.checker_callback(self, pid, condition, command,
1119
*args, **kwargs)
1120
1928
1121
def start_checker(self, *args, **kwargs):
1929
old_checker_pid = getattr(self.checker, "pid", None)
1122
old_checker = self.checker
1123
if self.checker is not None:
1124
old_checker_pid = self.checker.pid
1125
else:
1126
old_checker_pid = None
1930
1127
r = Client.start_checker(self, *args, **kwargs)
1931
1128
# Only if new checker process was started
1932
1129
if (self.checker is not None
1934
1131
# Emit D-Bus signal
1935
1132
self.CheckerStarted(self.current_checker_command)
1936
1133
return r
1937
1134
1938
1135
def _reset_approved(self):
1939
1136
self.approved = None
1940
1137
return False
1941
1138
1942
1139
def approve(self, value=True):
1140
self.send_changedstate()
1943
1141
self.approved = value
1944
GLib.timeout_add(int(self.approval_duration.total_seconds()
1945
* 1000), self._reset_approved)
1946
self.send_changedstate()
1947
1948
# D-Bus methods, signals & properties
1949
1950
# Interfaces
1951
1952
# Signals
1953
1142
gobject.timeout_add(timedelta_to_milliseconds
1143
(self.approval_duration),
1144
self._reset_approved)
1145
1146
1147
## D-Bus methods, signals & properties
1148
_interface = "se.recompile.Mandos.Client"
1149
1150
## Signals
1151
1954
1152
# CheckerCompleted - signal
1955
1153
@dbus.service.signal(_interface, signature="nxs")
1956
1154
def CheckerCompleted(self, exitcode, waitstatus, command):
1957
1155
"D-Bus signal"
1958
1156
pass
1959
1157
1960
1158
# CheckerStarted - signal
1961
1159
@dbus.service.signal(_interface, signature="s")
1962
1160
def CheckerStarted(self, command):
1963
1161
"D-Bus signal"
1964
1162
pass
1965
1163
1966
1164
# PropertyChanged - signal
1967
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1968
1165
@dbus.service.signal(_interface, signature="sv")
1969
1166
def PropertyChanged(self, property, value):
1970
1167
"D-Bus signal"
1971
1168
pass
1972
1169
1973
1170
# GotSecret - signal
1974
1171
@dbus.service.signal(_interface)
1975
1172
def GotSecret(self):
1978
1175
server to mandos-client
1979
1176
"""
1980
1177
pass
1981
1178
1982
1179
# Rejected - signal
1983
1180
@dbus.service.signal(_interface, signature="s")
1984
1181
def Rejected(self, reason):
1985
1182
"D-Bus signal"
1986
1183
pass
1987
1184
1988
1185
# NeedApproval - signal
1989
1186
@dbus.service.signal(_interface, signature="tb")
1990
1187
def NeedApproval(self, timeout, default):
1991
1188
"D-Bus signal"
1992
1189
return self.need_approval()
1993
1994
# Methods
1995
1190
1191
# NeRwequest - signal
1192
@dbus.service.signal(_interface, signature="s")
1193
def NewRequest(self, ip):
1194
"""D-Bus signal
1195
Is sent after a client request a password.
1196
"""
1197
pass
1198
1199
## Methods
1200
1996
1201
# Approve - method
1997
1202
@dbus.service.method(_interface, in_signature="b")
1998
1203
def Approve(self, value):
1999
1204
self.approve(value)
2000
1205
2001
1206
# CheckedOK - method
2002
1207
@dbus.service.method(_interface)
2003
1208
def CheckedOK(self):
2004
1209
self.checked_ok()
2005
1210
2006
1211
# Enable - method
2007
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2008
1212
@dbus.service.method(_interface)
2009
1213
def Enable(self):
2010
1214
"D-Bus method"
2011
1215
self.enable()
2012
1216
2013
1217
# StartChecker - method
2014
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2015
1218
@dbus.service.method(_interface)
2016
1219
def StartChecker(self):
2017
1220
"D-Bus method"
2018
1221
self.start_checker()
2019
1222
2020
1223
# Disable - method
2021
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2022
1224
@dbus.service.method(_interface)
2023
1225
def Disable(self):
2024
1226
"D-Bus method"
2025
1227
self.disable()
2026
1228
2027
1229
# StopChecker - method
2028
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2029
1230
@dbus.service.method(_interface)
2030
1231
def StopChecker(self):
2031
1232
self.stop_checker()
2032
2033
# Properties
2034
1233
1234
## Properties
1235
2035
1236
# ApprovalPending - property
2036
1237
@dbus_service_property(_interface, signature="b", access="read")
2037
1238
def ApprovalPending_dbus_property(self):
2038
1239
return dbus.Boolean(bool(self.approvals_pending))
2039
1240
2040
1241
# ApprovedByDefault - property
2041
@dbus_service_property(_interface,
2042
signature="b",
1242
@dbus_service_property(_interface, signature="b",
2043
1243
access="readwrite")
2044
1244
def ApprovedByDefault_dbus_property(self, value=None):
2045
1245
if value is None: # get
2046
1246
return dbus.Boolean(self.approved_by_default)
2047
1247
self.approved_by_default = bool(value)
2048
1248
2049
1249
# ApprovalDelay - property
2050
@dbus_service_property(_interface,
2051
signature="t",
1250
@dbus_service_property(_interface, signature="t",
2052
1251
access="readwrite")
2053
1252
def ApprovalDelay_dbus_property(self, value=None):
2054
1253
if value is None: # get
2055
return dbus.UInt64(self.approval_delay.total_seconds()
2056
* 1000)
1254
return dbus.UInt64(self.approval_delay_milliseconds())
2057
1255
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2058
1256
2059
1257
# ApprovalDuration - property
2060
@dbus_service_property(_interface,
2061
signature="t",
1258
@dbus_service_property(_interface, signature="t",
2062
1259
access="readwrite")
2063
1260
def ApprovalDuration_dbus_property(self, value=None):
2064
1261
if value is None: # get
2065
return dbus.UInt64(self.approval_duration.total_seconds()
2066
* 1000)
1262
return dbus.UInt64(timedelta_to_milliseconds(
1263
self.approval_duration))
2067
1264
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2068
1265
2069
1266
# Name - property
2070
@dbus_annotations(
2071
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2072
1267
@dbus_service_property(_interface, signature="s", access="read")
2073
1268
def Name_dbus_property(self):
2074
1269
return dbus.String(self.name)
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
1270
2083
1271
# Fingerprint - property
2084
@dbus_annotations(
2085
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2086
1272
@dbus_service_property(_interface, signature="s", access="read")
2087
1273
def Fingerprint_dbus_property(self):
2088
1274
return dbus.String(self.fingerprint)
2089
1275
2090
1276
# Host - property
2091
@dbus_service_property(_interface,
2092
signature="s",
1277
@dbus_service_property(_interface, signature="s",
2093
1278
access="readwrite")
2094
1279
def Host_dbus_property(self, value=None):
2095
1280
if value is None: # get
2096
1281
return dbus.String(self.host)
2097
self.host = str(value)
2098
1282
self.host = value
1283
2099
1284
# Created - property
2100
@dbus_annotations(
2101
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2102
1285
@dbus_service_property(_interface, signature="s", access="read")
2103
1286
def Created_dbus_property(self):
2104
1287
return datetime_to_dbus(self.created)
2105
1288
2106
1289
# LastEnabled - property
2107
1290
@dbus_service_property(_interface, signature="s", access="read")
2108
1291
def LastEnabled_dbus_property(self):
2109
1292
return datetime_to_dbus(self.last_enabled)
2110
1293
2111
1294
# Enabled - property
2112
@dbus_service_property(_interface,
2113
signature="b",
1295
@dbus_service_property(_interface, signature="b",
2114
1296
access="readwrite")
2115
1297
def Enabled_dbus_property(self, value=None):
2116
1298
if value is None: # get
2119
1301
self.enable()
2120
1302
else:
2121
1303
self.disable()
2122
1304
2123
1305
# LastCheckedOK - property
2124
@dbus_service_property(_interface,
2125
signature="s",
1306
@dbus_service_property(_interface, signature="s",
2126
1307
access="readwrite")
2127
1308
def LastCheckedOK_dbus_property(self, value=None):
2128
1309
if value is not None:
2129
1310
self.checked_ok()
2130
1311
return
2131
1312
return datetime_to_dbus(self.last_checked_ok)
2132
2133
# LastCheckerStatus - property
2134
@dbus_service_property(_interface, signature="n", access="read")
2135
def LastCheckerStatus_dbus_property(self):
2136
return dbus.Int16(self.last_checker_status)
2137
1313
2138
1314
# Expires - property
2139
1315
@dbus_service_property(_interface, signature="s", access="read")
2140
1316
def Expires_dbus_property(self):
2141
1317
return datetime_to_dbus(self.expires)
2142
1318
2143
1319
# LastApprovalRequest - property
2144
1320
@dbus_service_property(_interface, signature="s", access="read")
2145
1321
def LastApprovalRequest_dbus_property(self):
2146
1322
return datetime_to_dbus(self.last_approval_request)
2147
1323
2148
1324
# Timeout - property
2149
@dbus_service_property(_interface,
2150
signature="t",
1325
@dbus_service_property(_interface, signature="t",
2151
1326
access="readwrite")
2152
1327
def Timeout_dbus_property(self, value=None):
2153
1328
if value is None: # get
2154
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2155
old_timeout = self.timeout
1329
return dbus.UInt64(self.timeout_milliseconds())
2156
1330
self.timeout = datetime.timedelta(0, 0, 0, value)
2157
# Reschedule disabling
2158
if self.enabled:
2159
now = datetime.datetime.utcnow()
2160
self.expires += self.timeout - old_timeout
2161
if self.expires <= now:
2162
# The timeout has passed
2163
self.disable()
2164
else:
2165
if (getattr(self, "disable_initiator_tag", None)
2166
is None):
2167
return
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
1331
if getattr(self, "disable_initiator_tag", None) is None:
1332
return
1333
# Reschedule timeout
1334
gobject.source_remove(self.disable_initiator_tag)
1335
self.disable_initiator_tag = None
1336
self.expires = None
1337
time_to_die = timedelta_to_milliseconds((self
1338
.last_checked_ok
1339
+ self.timeout)
1340
- datetime.datetime
1341
.utcnow())
1342
if time_to_die <= 0:
1343
# The timeout has passed
1344
self.disable()
1345
else:
1346
self.expires = (datetime.datetime.utcnow()
1347
+ datetime.timedelta(milliseconds =
1348
time_to_die))
1349
self.disable_initiator_tag = (gobject.timeout_add
1350
(time_to_die, self.disable))
1351
2173
1352
# ExtendedTimeout - property
2174
@dbus_service_property(_interface,
2175
signature="t",
1353
@dbus_service_property(_interface, signature="t",
2176
1354
access="readwrite")
2177
1355
def ExtendedTimeout_dbus_property(self, value=None):
2178
1356
if value is None: # get
2179
return dbus.UInt64(self.extended_timeout.total_seconds()
2180
* 1000)
1357
return dbus.UInt64(self.extended_timeout_milliseconds())
2181
1358
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2182
1359
2183
1360
# Interval - property
2184
@dbus_service_property(_interface,
2185
signature="t",
1361
@dbus_service_property(_interface, signature="t",
2186
1362
access="readwrite")
2187
1363
def Interval_dbus_property(self, value=None):
2188
1364
if value is None: # get
2189
return dbus.UInt64(self.interval.total_seconds() * 1000)
1365
return dbus.UInt64(self.interval_milliseconds())
2190
1366
self.interval = datetime.timedelta(0, 0, 0, value)
2191
1367
if getattr(self, "checker_initiator_tag", None) is None:
2192
1368
return
2193
1369
if self.enabled:
2194
1370
# Reschedule checker run
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
1371
gobject.source_remove(self.checker_initiator_tag)
1372
self.checker_initiator_tag = (gobject.timeout_add
1373
(value, self.start_checker))
1374
self.start_checker() # Start one now, too
1375
2200
1376
# Checker - property
2201
@dbus_service_property(_interface,
2202
signature="s",
1377
@dbus_service_property(_interface, signature="s",
2203
1378
access="readwrite")
2204
1379
def Checker_dbus_property(self, value=None):
2205
1380
if value is None: # get
2206
1381
return dbus.String(self.checker_command)
2207
self.checker_command = str(value)
2208
1382
self.checker_command = value
1383
2209
1384
# CheckerRunning - property
2210
@dbus_service_property(_interface,
2211
signature="b",
1385
@dbus_service_property(_interface, signature="b",
2212
1386
access="readwrite")
2213
1387
def CheckerRunning_dbus_property(self, value=None):
2214
1388
if value is None: # get
2217
1391
self.start_checker()
2218
1392
else:
2219
1393
self.stop_checker()
2220
1394
2221
1395
# ObjectPath - property
2222
@dbus_annotations(
2223
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2224
"org.freedesktop.DBus.Deprecated": "true"})
2225
1396
@dbus_service_property(_interface, signature="o", access="read")
2226
1397
def ObjectPath_dbus_property(self):
2227
return self.dbus_object_path # is already a dbus.ObjectPath
2228
1398
return self.dbus_object_path # is already a dbus.ObjectPath
1399
2229
1400
# Secret = property
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)
1401
@dbus_service_property(_interface, signature="ay",
1402
access="write", byte_arrays=True)
2237
1403
def Secret_dbus_property(self, value):
2238
self.secret = bytes(value)
2239
1404
self.secret = str(value)
1405
2240
1406
del _interface
2241
1407
2242
1408
2243
class ProxyClient:
2244
def __init__(self, child_pipe, key_id, fpr, address):
1409
class ProxyClient(object):
1410
def __init__(self, child_pipe, fpr, address):
2245
1411
self._pipe = child_pipe
2246
self._pipe.send(('init', key_id, fpr, address))
1412
self._pipe.send(('init', fpr, address))
2247
1413
if not self._pipe.recv():
2248
raise KeyError(key_id or fpr)
2249
1414
raise KeyError()
1415
2250
1416
def __getattribute__(self, name):
2251
1417
if name == '_pipe':
2252
1418
return super(ProxyClient, self).__getattribute__(name)
2255
1421
if data[0] == 'data':
2256
1422
return data[1]
2257
1423
if data[0] == 'function':
2258
2259
1424
def func(*args, **kwargs):
2260
1425
self._pipe.send(('funcall', name, args, kwargs))
2261
1426
return self._pipe.recv()[1]
2262
2263
1427
return func
2264
1428
2265
1429
def __setattr__(self, name, value):
2266
1430
if name == '_pipe':
2267
1431
return super(ProxyClient, self).__setattr__(name, value)
2268
1432
self._pipe.send(('setattr', name, value))
2269
1433
2270
1434
1435
class ClientDBusTransitional(ClientDBus):
1436
__metaclass__ = AlternateDBusNamesMetaclass
1437
1438
2271
1439
class ClientHandler(socketserver.BaseRequestHandler, object):
2272
1440
"""A class to handle client connections.
2273
1441
2274
1442
Instantiated once for each connection to handle it.
2275
1443
Note: This will run in its own forked process."""
2276
1444
2277
1445
def handle(self):
2278
1446
with contextlib.closing(self.server.child_pipe) as child_pipe:
2279
1447
logger.info("TCP connection from: %s",
2280
str(self.client_address))
1448
unicode(self.client_address))
2281
1449
logger.debug("Pipe FD: %d",
2282
1450
self.server.child_pipe.fileno())
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"))
1451
1452
session = (gnutls.connection
1453
.ClientSession(self.request,
1454
gnutls.connection
1455
.X509Credentials()))
1456
1457
# Note: gnutls.connection.X509Credentials is really a
1458
# generic GnuTLS certificate credentials object so long as
1459
# no X.509 keys are added to it. Therefore, we can use it
1460
# here despite using OpenPGP certificates.
1461
1462
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1463
# "+AES-256-CBC", "+SHA1",
1464
# "+COMP-NULL", "+CTYPE-OPENPGP",
1465
# "+DHE-DSS"))
2290
1466
# Use a fallback default, since this MUST be set.
2291
1467
priority = self.server.gnutls_priority
2292
1468
if priority is None:
2293
1469
priority = "NORMAL"
2294
gnutls.priority_set_direct(session._c_object,
2295
priority.encode("utf-8"),
2296
None)
2297
1470
(gnutls.library.functions
1471
.gnutls_priority_set_direct(session._c_object,
1472
priority, None))
1473
2298
1474
# Start communication using the Mandos protocol
2299
1475
# Get protocol number
2300
1476
line = self.request.makefile().readline()
2301
1477
logger.debug("Protocol version: %r", line)
2302
1478
try:
2303
1479
if int(line.strip().split()[0]) > 1:
2304
raise RuntimeError(line)
1480
raise RuntimeError
2305
1481
except (ValueError, IndexError, RuntimeError) as error:
2306
1482
logger.error("Unknown protocol version: %s", error)
2307
1483
return
2308
1484
2309
1485
# Start GnuTLS connection
2310
1486
try:
2311
1487
session.handshake()
2312
except gnutls.Error as error:
1488
except gnutls.errors.GNUTLSError as error:
2313
1489
logger.warning("Handshake failed: %s", error)
2314
1490
# Do not run session.bye() here: the session is not
2315
1491
# established. Just abandon the request.
2316
1492
return
2317
1493
logger.debug("Handshake succeeded")
2318
1494
2319
1495
approval_required = False
2320
1496
try:
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,
1497
try:
1498
fpr = self.fingerprint(self.peer_certificate
1499
(session))
1500
except (TypeError,
1501
gnutls.errors.GNUTLSError) as error:
1502
logger.warning("Bad certificate: %s", error)
1503
return
1504
logger.debug("Fingerprint: %s", fpr)
1505
1506
try:
1507
client = ProxyClient(child_pipe, fpr,
2343
1508
self.client_address)
2344
1509
except KeyError:
2345
1510
return
2346
1511
1512
if self.server.use_dbus:
1513
# Emit D-Bus signal
1514
client.NewRequest(str(self.client_address))
1515
2347
1516
if client.approval_delay:
2348
1517
delay = client.approval_delay
2349
1518
client.approvals_pending += 1
2350
1519
approval_required = True
2351
1520
2352
1521
while True:
2353
1522
if not client.enabled:
2354
1523
logger.info("Client %s is disabled",
2355
client.name)
1524
client.name)
2356
1525
if self.server.use_dbus:
2357
1526
# Emit D-Bus signal
2358
1527
client.Rejected("Disabled")
2359
1528
return
2360
1529
2361
1530
if client.approved or not client.approval_delay:
2362
# We are approved or approval is disabled
1531
#We are approved or approval is disabled
2363
1532
break
2364
1533
elif client.approved is None:
2365
1534
logger.info("Client %s needs approval",
2367
1536
if self.server.use_dbus:
2368
1537
# Emit D-Bus signal
2369
1538
client.NeedApproval(
2370
client.approval_delay.total_seconds()
2371
* 1000, client.approved_by_default)
1539
client.approval_delay_milliseconds(),
1540
client.approved_by_default)
2372
1541
else:
2373
1542
logger.warning("Client %s was not approved",
2374
1543
client.name)
2376
1545
# Emit D-Bus signal
2377
1546
client.Rejected("Denied")
2378
1547
return
2379
2380
# wait until timeout or approved
1548
1549
#wait until timeout or approved
2381
1550
time = datetime.datetime.now()
2382
1551
client.changedstate.acquire()
2383
client.changedstate.wait(delay.total_seconds())
1552
(client.changedstate.wait
1553
(float(client.timedelta_to_milliseconds(delay)
1554
/ 1000)))
2384
1555
client.changedstate.release()
2385
1556
time2 = datetime.datetime.now()
2386
1557
if (time2 - time) >= delay:
2396
1567
break
2397
1568
else:
2398
1569
delay -= time2 - time
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
1570
1571
sent_size = 0
1572
while sent_size < len(client.secret):
1573
try:
1574
sent = session.send(client.secret[sent_size:])
1575
except gnutls.errors.GNUTLSError as error:
1576
logger.warning("gnutls send failed")
1577
return
1578
logger.debug("Sent: %d, remaining: %d",
1579
sent, len(client.secret)
1580
- (sent_size + sent))
1581
sent_size += sent
1582
2407
1583
logger.info("Sending secret to %s", client.name)
2408
1584
# bump the timeout using extended_timeout
2409
client.bump_timeout(client.extended_timeout)
1585
client.checked_ok(client.extended_timeout)
2410
1586
if self.server.use_dbus:
2411
1587
# Emit D-Bus signal
2412
1588
client.GotSecret()
2413
1589
2414
1590
finally:
2415
1591
if approval_required:
2416
1592
client.approvals_pending -= 1
2417
1593
try:
2418
1594
session.bye()
2419
except gnutls.Error as error:
2420
logger.warning("GnuTLS bye failed",
2421
exc_info=error)
2422
1595
except gnutls.errors.GNUTLSError as error:
1596
logger.warning("GnuTLS bye failed")
1597
2423
1598
@staticmethod
2424
1599
def peer_certificate(session):
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""
1600
"Return the peer's OpenPGP certificate as a bytestring"
1601
# If not an OpenPGP certificate...
1602
if (gnutls.library.functions
1603
.gnutls_certificate_type_get(session._c_object)
1604
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1605
# ...do the normal thing
1606
return session.peer_certificate
2441
1607
list_size = ctypes.c_uint(1)
2442
cert_list = (gnutls.certificate_get_peers
1608
cert_list = (gnutls.library.functions
1609
.gnutls_certificate_get_peers
2443
1610
(session._c_object, ctypes.byref(list_size)))
2444
1611
if not bool(cert_list) and list_size.value != 0:
2445
raise gnutls.Error("error getting peer certificate")
1612
raise gnutls.errors.GNUTLSError("error getting peer"
1613
" certificate")
2446
1614
if list_size.value == 0:
2447
1615
return None
2448
1616
cert = cert_list[0]
2449
1617
return ctypes.string_at(cert.data, cert.size)
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
1618
2485
1619
@staticmethod
2486
1620
def fingerprint(openpgp):
2487
1621
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2488
1622
# New GnuTLS "datum" with the OpenPGP public key
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)))
1623
datum = (gnutls.library.types
1624
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1625
ctypes.POINTER
1626
(ctypes.c_ubyte)),
1627
ctypes.c_uint(len(openpgp))))
2493
1628
# New empty GnuTLS certificate
2494
crt = gnutls.openpgp_crt_t()
2495
gnutls.openpgp_crt_init(ctypes.byref(crt))
1629
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1630
(gnutls.library.functions
1631
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2496
1632
# Import the OpenPGP public key into the certificate
2497
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2498
gnutls.OPENPGP_FMT_RAW)
1633
(gnutls.library.functions
1634
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1635
gnutls.library.constants
1636
.GNUTLS_OPENPGP_FMT_RAW))
2499
1637
# Verify the self signature in the key
2500
1638
crtverify = ctypes.c_uint()
2501
gnutls.openpgp_crt_verify_self(crt, 0,
2502
ctypes.byref(crtverify))
1639
(gnutls.library.functions
1640
.gnutls_openpgp_crt_verify_self(crt, 0,
1641
ctypes.byref(crtverify)))
2503
1642
if crtverify.value != 0:
2504
gnutls.openpgp_crt_deinit(crt)
2505
raise gnutls.CertificateSecurityError(code
2506
=crtverify.value)
1643
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1644
raise (gnutls.errors.CertificateSecurityError
1645
("Verify failed"))
2507
1646
# New buffer for the fingerprint
2508
1647
buf = ctypes.create_string_buffer(20)
2509
1648
buf_len = ctypes.c_size_t()
2510
1649
# Get the fingerprint from the certificate into the buffer
2511
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2512
ctypes.byref(buf_len))
1650
(gnutls.library.functions
1651
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1652
ctypes.byref(buf_len)))
2513
1653
# Deinit the certificate
2514
gnutls.openpgp_crt_deinit(crt)
1654
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2515
1655
# Convert the buffer to a Python bytestring
2516
1656
fpr = ctypes.string_at(buf, buf_len.value)
2517
1657
# Convert the bytestring to hexadecimal notation
2519
1659
return hex_fpr
2520
1660
2521
1661
2522
class MultiprocessingMixIn:
1662
class MultiprocessingMixIn(object):
2523
1663
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2524
2525
1664
def sub_process_main(self, request, address):
2526
1665
try:
2527
1666
self.finish_request(request, address)
2528
except Exception:
1667
except:
2529
1668
self.handle_error(request, address)
2530
1669
self.close_request(request)
2531
1670
2532
1671
def process_request(self, request, address):
2533
1672
"""Start a new process to process the request."""
2534
proc = multiprocessing.Process(target=self.sub_process_main,
2535
args=(request, address))
1673
proc = multiprocessing.Process(target = self.sub_process_main,
1674
args = (request,
1675
address))
2536
1676
proc.start()
2537
1677
return proc
2538
1678
2539
1679
2540
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1680
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2541
1681
""" adds a pipe to the MixIn """
2542
2543
1682
def process_request(self, request, client_address):
2544
1683
"""Overrides and wraps the original process_request().
2545
1684
2546
1685
This function creates a new pipe in self.pipe
2547
1686
"""
2548
1687
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2549
1688
2550
1689
proc = MultiprocessingMixIn.process_request(self, request,
2551
1690
client_address)
2552
1691
self.child_pipe.close()
2553
1692
self.add_pipe(parent_pipe, proc)
2554
1693
2555
1694
def add_pipe(self, parent_pipe, proc):
2556
1695
"""Dummy function; override as necessary"""
2557
raise NotImplementedError()
1696
raise NotImplementedError
2558
1697
2559
1698
2560
1699
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2561
socketserver.TCPServer):
1700
socketserver.TCPServer, object):
2562
1701
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2563
1702
2564
1703
Attributes:
2565
1704
enabled: Boolean; whether this server is activated yet
2566
1705
interface: None or a network interface name (string)
2567
1706
use_ipv6: Boolean; to use IPv6 or not
2568
1707
"""
2569
2570
1708
def __init__(self, server_address, RequestHandlerClass,
2571
interface=None,
2572
use_ipv6=True,
2573
socketfd=None):
2574
"""If socketfd is set, use that file descriptor instead of
2575
creating a new one with socket.socket().
2576
"""
1709
interface=None, use_ipv6=True):
2577
1710
self.interface = interface
2578
1711
if use_ipv6:
2579
1712
self.address_family = socket.AF_INET6
2580
if socketfd is not None:
2581
# Save the file descriptor
2582
self.socketfd = socketfd
2583
# Save the original socket.socket() function
2584
self.socket_socket = socket.socket
2585
2586
# To implement --socket, we monkey patch socket.socket.
2587
#
2588
# (When socketserver.TCPServer is a new-style class, we
2589
# could make self.socket into a property instead of monkey
2590
# patching socket.socket.)
2591
#
2592
# Create a one-time-only replacement for socket.socket()
2593
@functools.wraps(socket.socket)
2594
def socket_wrapper(*args, **kwargs):
2595
# Restore original function so subsequent calls are
2596
# not affected.
2597
socket.socket = self.socket_socket
2598
del self.socket_socket
2599
# This time only, return a new socket object from the
2600
# saved file descriptor.
2601
return socket.fromfd(self.socketfd, *args, **kwargs)
2602
# Replace socket.socket() function with wrapper
2603
socket.socket = socket_wrapper
2604
# The socketserver.TCPServer.__init__ will call
2605
# socket.socket(), which might be our replacement,
2606
# socket_wrapper(), if socketfd was set.
2607
1713
socketserver.TCPServer.__init__(self, server_address,
2608
1714
RequestHandlerClass)
2609
2610
1715
def server_bind(self):
2611
1716
"""This overrides the normal server_bind() function
2612
1717
to bind to an interface if one was specified, and also NOT to
2613
1718
bind to an address or port if they were not specified."""
2614
global SO_BINDTODEVICE
2615
1719
if self.interface is not None:
2616
1720
if SO_BINDTODEVICE is None:
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
1721
logger.error("SO_BINDTODEVICE does not exist;"
1722
" cannot bind to interface %s",
1723
self.interface)
1724
else:
1725
try:
1726
self.socket.setsockopt(socket.SOL_SOCKET,
1727
SO_BINDTODEVICE,
1728
str(self.interface
1729
+ '\0'))
1730
except socket.error as error:
1731
if error[0] == errno.EPERM:
1732
logger.error("No permission to"
1733
" bind to interface %s",
1734
self.interface)
1735
elif error[0] == errno.ENOPROTOOPT:
1736
logger.error("SO_BINDTODEVICE not available;"
1737
" cannot bind to interface %s",
1738
self.interface)
1739
else:
1740
raise
2638
1741
# Only bind(2) the socket if we really need to.
2639
1742
if self.server_address[0] or self.server_address[1]:
2640
if self.server_address[1]:
2641
self.allow_reuse_address = True
2642
1743
if not self.server_address[0]:
2643
1744
if self.address_family == socket.AF_INET6:
2644
any_address = "::" # in6addr_any
1745
any_address = "::" # in6addr_any
2645
1746
else:
2646
any_address = "0.0.0.0" # INADDR_ANY
1747
any_address = socket.INADDR_ANY
2647
1748
self.server_address = (any_address,
2648
1749
self.server_address[1])
2649
1750
elif not self.server_address[1]:
2650
self.server_address = (self.server_address[0], 0)
1751
self.server_address = (self.server_address[0],
1752
0)
2651
1753
# if self.interface:
2652
1754
# self.server_address = (self.server_address[0],
2653
1755
# 0, # port
2659
1761
2660
1762
class MandosServer(IPv6_TCPServer):
2661
1763
"""Mandos server.
2662
1764
2663
1765
Attributes:
2664
1766
clients: set of Client objects
2665
1767
gnutls_priority GnuTLS priority string
2666
1768
use_dbus: Boolean; to emit D-Bus signals or not
2667
2668
Assumes a GLib.MainLoop event loop.
1769
1770
Assumes a gobject.MainLoop event loop.
2669
1771
"""
2670
2671
1772
def __init__(self, server_address, RequestHandlerClass,
2672
interface=None,
2673
use_ipv6=True,
2674
clients=None,
2675
gnutls_priority=None,
2676
use_dbus=True,
2677
socketfd=None):
1773
interface=None, use_ipv6=True, clients=None,
1774
gnutls_priority=None, use_dbus=True):
2678
1775
self.enabled = False
2679
1776
self.clients = clients
2680
1777
if self.clients is None:
2683
1780
self.gnutls_priority = gnutls_priority
2684
1781
IPv6_TCPServer.__init__(self, server_address,
2685
1782
RequestHandlerClass,
2686
interface=interface,
2687
use_ipv6=use_ipv6,
2688
socketfd=socketfd)
2689
1783
interface = interface,
1784
use_ipv6 = use_ipv6)
2690
1785
def server_activate(self):
2691
1786
if self.enabled:
2692
1787
return socketserver.TCPServer.server_activate(self)
2693
1788
2694
1789
def enable(self):
2695
1790
self.enabled = True
2696
1791
2697
1792
def add_pipe(self, parent_pipe, proc):
2698
1793
# Call "handle_ipc" for both data and EOF events
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):
1794
gobject.io_add_watch(parent_pipe.fileno(),
1795
gobject.IO_IN | gobject.IO_HUP,
1796
functools.partial(self.handle_ipc,
1797
parent_pipe =
1798
parent_pipe,
1799
proc = proc))
1800
1801
def handle_ipc(self, source, condition, parent_pipe=None,
1802
proc = None, client_object=None):
1803
condition_names = {
1804
gobject.IO_IN: "IN", # There is data to read.
1805
gobject.IO_OUT: "OUT", # Data can be written (without
1806
# blocking).
1807
gobject.IO_PRI: "PRI", # There is urgent data to read.
1808
gobject.IO_ERR: "ERR", # Error condition.
1809
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1810
# broken, usually for pipes and
1811
# sockets).
1812
}
1813
conditions_string = ' | '.join(name
1814
for cond, name in
1815
condition_names.iteritems()
1816
if cond & condition)
2710
1817
# error, or the other end of multiprocessing.Pipe has closed
2711
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1818
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2712
1819
# Wait for other process to exit
2713
1820
proc.join()
2714
1821
return False
2715
1822
2716
1823
# Read a request from the child
2717
1824
request = parent_pipe.recv()
2718
1825
command = request[0]
2719
1826
2720
1827
if command == 'init':
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:
1828
fpr = request[1]
1829
address = request[2]
1830
1831
for c in self.clients.itervalues():
1832
if c.fingerprint == fpr:
2732
1833
client = c
2733
1834
break
2734
1835
else:
2735
logger.info("Client not found for key ID: %s, address"
2736
": %s", key_id or fpr, address)
1836
logger.info("Client not found for fingerprint: %s, ad"
1837
"dress: %s", fpr, address)
2737
1838
if self.use_dbus:
2738
1839
# Emit D-Bus signal
2739
mandos_dbus_service.ClientNotFound(key_id or fpr,
1840
mandos_dbus_service.ClientNotFound(fpr,
2740
1841
address[0])
2741
1842
parent_pipe.send(False)
2742
1843
return False
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))
1844
1845
gobject.io_add_watch(parent_pipe.fileno(),
1846
gobject.IO_IN | gobject.IO_HUP,
1847
functools.partial(self.handle_ipc,
1848
parent_pipe =
1849
parent_pipe,
1850
proc = proc,
1851
client_object =
1852
client))
2751
1853
parent_pipe.send(True)
2752
1854
# remove the old hook in favor of the new above hook on
2753
1855
# same fileno
2756
1858
funcname = request[1]
2757
1859
args = request[2]
2758
1860
kwargs = request[3]
2759
1861
2760
1862
parent_pipe.send(('data', getattr(client_object,
2761
1863
funcname)(*args,
2762
**kwargs)))
2763
1864
**kwargs)))
1865
2764
1866
if command == 'getattr':
2765
1867
attrname = request[1]
2766
if isinstance(client_object.__getattribute__(attrname),
2767
collections.abc.Callable):
2768
parent_pipe.send(('function', ))
1868
if callable(client_object.__getattribute__(attrname)):
1869
parent_pipe.send(('function',))
2769
1870
else:
2770
parent_pipe.send((
2771
'data', client_object.__getattribute__(attrname)))
2772
1871
parent_pipe.send(('data', client_object
1872
.__getattribute__(attrname)))
1873
2773
1874
if command == 'setattr':
2774
1875
attrname = request[1]
2775
1876
value = request[2]
2776
1877
setattr(client_object, attrname, value)
2777
1878
2778
1879
return True
2779
1880
2780
1881
2781
def rfc3339_duration_to_delta(duration):
2782
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
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
2798
"""
2799
2800
# Parsing an RFC 3339 duration with regular expressions is not
2801
# possible - there would have to be multiple places for the same
2802
# values, like seconds. The current code, while more esoteric, is
2803
# cleaner without depending on a parsing library. If Python had a
2804
# built-in library for parsing we would use it, but we'd like to
2805
# avoid excessive use of external libraries.
2806
2807
# New type for defining tokens, syntax, and semantics all-in-one
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
2813
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2814
# the "duration" ABNF definition in RFC 3339, Appendix A.
2815
token_end = Token(re.compile(r"$"), None, frozenset())
2816
token_second = Token(re.compile(r"(\d+)S"),
2817
datetime.timedelta(seconds=1),
2818
frozenset((token_end, )))
2819
token_minute = Token(re.compile(r"(\d+)M"),
2820
datetime.timedelta(minutes=1),
2821
frozenset((token_second, token_end)))
2822
token_hour = Token(re.compile(r"(\d+)H"),
2823
datetime.timedelta(hours=1),
2824
frozenset((token_minute, token_end)))
2825
token_time = Token(re.compile(r"T"),
2826
None,
2827
frozenset((token_hour, token_minute,
2828
token_second)))
2829
token_day = Token(re.compile(r"(\d+)D"),
2830
datetime.timedelta(days=1),
2831
frozenset((token_time, token_end)))
2832
token_month = Token(re.compile(r"(\d+)M"),
2833
datetime.timedelta(weeks=4),
2834
frozenset((token_day, token_end)))
2835
token_year = Token(re.compile(r"(\d+)Y"),
2836
datetime.timedelta(weeks=52),
2837
frozenset((token_month, token_end)))
2838
token_week = Token(re.compile(r"(\d+)W"),
2839
datetime.timedelta(weeks=1),
2840
frozenset((token_end, )))
2841
token_duration = Token(re.compile(r"P"), None,
2842
frozenset((token_year, token_month,
2843
token_day, token_time,
2844
token_week)))
2845
# Define starting values:
2846
# Value so far
2847
value = datetime.timedelta()
2848
found_token = None
2849
# Following valid tokens
2850
followers = frozenset((token_duration, ))
2851
# String left to parse
2852
s = duration
2853
# Loop until end token is found
2854
while found_token is not token_end:
2855
# Search for any currently valid tokens
2856
for token in followers:
2857
match = token.regexp.match(s)
2858
if match is not None:
2859
# Token found
2860
if token.value is not None:
2861
# Value found, parse digits
2862
factor = int(match.group(1), 10)
2863
# Add to value so far
2864
value += factor * token.value
2865
# Strip token from string
2866
s = token.regexp.sub("", s, 1)
2867
# Go to found token
2868
found_token = token
2869
# Set valid next tokens
2870
followers = found_token.followers
2871
break
2872
else:
2873
# No currently valid tokens were found
2874
raise ValueError("Invalid RFC 3339 duration: {!r}"
2875
.format(duration))
2876
# End token found
2877
return value
2878
2879
2880
1882
def string_to_delta(interval):
2881
1883
"""Parse a string and return a datetime.timedelta
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
1884
1885
>>> string_to_delta('7d')
1886
datetime.timedelta(7)
1887
>>> string_to_delta('60s')
1888
datetime.timedelta(0, 60)
1889
>>> string_to_delta('60m')
1890
datetime.timedelta(0, 3600)
1891
>>> string_to_delta('24h')
1892
datetime.timedelta(1)
1893
>>> string_to_delta('1w')
1894
datetime.timedelta(7)
1895
>>> string_to_delta('5m 30s')
1896
datetime.timedelta(0, 330)
2895
1897
"""
2896
2897
try:
2898
return rfc3339_duration_to_delta(interval)
2899
except ValueError:
2900
pass
2901
2902
1898
timevalue = datetime.timedelta(0)
2903
1899
for s in interval.split():
2904
1900
try:
2905
suffix = s[-1]
1901
suffix = unicode(s[-1])
2906
1902
value = int(s[:-1])
2907
1903
if suffix == "d":
2908
1904
delta = datetime.timedelta(value)
2915
1911
elif suffix == "w":
2916
1912
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2917
1913
else:
2918
raise ValueError("Unknown suffix {!r}".format(suffix))
2919
except IndexError as e:
1914
raise ValueError("Unknown suffix %r" % suffix)
1915
except (ValueError, IndexError) as e:
2920
1916
raise ValueError(*(e.args))
2921
1917
timevalue += delta
2922
1918
return timevalue
2923
1919
2924
1920
2925
def daemon(nochdir=False, noclose=False):
1921
def daemon(nochdir = False, noclose = False):
2926
1922
"""See daemon(3). Standard BSD Unix function.
2927
1923
2928
1924
This should really exist as os.daemon, but it doesn't (yet)."""
2929
1925
if os.fork():
2930
1926
sys.exit()
2935
1931
sys.exit()
2936
1932
if not noclose:
2937
1933
# Close all standard open file descriptors
2938
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1934
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2939
1935
if not stat.S_ISCHR(os.fstat(null).st_mode):
2940
1936
raise OSError(errno.ENODEV,
2941
"{} not a character device"
2942
.format(os.devnull))
1937
"%s not a character device"
1938
% os.path.devnull)
2943
1939
os.dup2(null, sys.stdin.fileno())
2944
1940
os.dup2(null, sys.stdout.fileno())
2945
1941
os.dup2(null, sys.stderr.fileno())
2948
1944
2949
1945
2950
1946
def main():
2951
1947
2952
1948
##################################################################
2953
1949
# Parsing of options, both command line and config file
2954
1950
2955
1951
parser = argparse.ArgumentParser()
2956
1952
parser.add_argument("-v", "--version", action="version",
2957
version="%(prog)s {}".format(version),
1953
version = "%%(prog)s %s" % version,
2958
1954
help="show version number and exit")
2959
1955
parser.add_argument("-i", "--interface", metavar="IF",
2960
1956
help="Bind to interface IF")
2966
1962
help="Run self-test")
2967
1963
parser.add_argument("--debug", action="store_true",
2968
1964
help="Debug mode; run in foreground and log"
2969
" to terminal", default=None)
1965
" to terminal")
2970
1966
parser.add_argument("--debuglevel", metavar="LEVEL",
2971
1967
help="Debug level for stdout output")
2972
1968
parser.add_argument("--priority", help="GnuTLS"
2979
1975
" files")
2980
1976
parser.add_argument("--no-dbus", action="store_false",
2981
1977
dest="use_dbus", help="Do not provide D-Bus"
2982
" system bus interface", default=None)
1978
" system bus interface")
2983
1979
parser.add_argument("--no-ipv6", action="store_false",
2984
dest="use_ipv6", help="Do not use IPv6",
2985
default=None)
1980
dest="use_ipv6", help="Do not use IPv6")
2986
1981
parser.add_argument("--no-restore", action="store_false",
2987
1982
dest="restore", help="Do not restore stored"
2988
" state", default=None)
2989
parser.add_argument("--socket", type=int,
2990
help="Specify a file descriptor to a network"
2991
" socket to use instead of creating one")
1983
" state")
2992
1984
parser.add_argument("--statedir", metavar="DIR",
2993
1985
help="Directory to save/restore state in")
2994
parser.add_argument("--foreground", action="store_true",
2995
help="Run in foreground", default=None)
2996
parser.add_argument("--no-zeroconf", action="store_false",
2997
dest="zeroconf", help="Do not use Zeroconf",
2998
default=None)
2999
1986
3000
1987
options = parser.parse_args()
3001
1988
1989
if options.check:
1990
import doctest
1991
doctest.testmod()
1992
sys.exit()
1993
3002
1994
# Default values for config file for server-global settings
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
1995
server_defaults = { "interface": "",
1996
"address": "",
1997
"port": "",
1998
"debug": "False",
1999
"priority":
2000
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2001
"servicename": "Mandos",
2002
"use_dbus": "True",
2003
"use_ipv6": "True",
2004
"debuglevel": "",
2005
"restore": "True",
2006
"statedir": "/var/lib/mandos"
2007
}
2008
3026
2009
# Parse config file for server-global settings
3027
server_config = configparser.ConfigParser(server_defaults)
2010
server_config = configparser.SafeConfigParser(server_defaults)
3028
2011
del server_defaults
3029
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3030
# Convert the ConfigParser object to a dict
2012
server_config.read(os.path.join(options.configdir,
2013
"mandos.conf"))
2014
# Convert the SafeConfigParser object to a dict
3031
2015
server_settings = server_config.defaults()
3032
2016
# Use the appropriate methods on the non-string config options
3033
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3034
"foreground", "zeroconf"):
2017
for option in ("debug", "use_dbus", "use_ipv6"):
3035
2018
server_settings[option] = server_config.getboolean("DEFAULT",
3036
2019
option)
3037
2020
if server_settings["port"]:
3038
2021
server_settings["port"] = server_config.getint("DEFAULT",
3039
2022
"port")
3040
if server_settings["socket"]:
3041
server_settings["socket"] = server_config.getint("DEFAULT",
3042
"socket")
3043
# Later, stdin will, and stdout and stderr might, be dup'ed
3044
# over with an opened os.devnull. But we don't want this to
3045
# happen with a supplied network socket.
3046
if 0 <= server_settings["socket"] <= 2:
3047
server_settings["socket"] = os.dup(server_settings
3048
["socket"])
3049
2023
del server_config
3050
2024
3051
2025
# Override the settings from the config file with command line
3052
2026
# options, if set.
3053
2027
for option in ("interface", "address", "port", "debug",
3054
"priority", "servicename", "configdir", "use_dbus",
3055
"use_ipv6", "debuglevel", "restore", "statedir",
3056
"socket", "foreground", "zeroconf"):
2028
"priority", "servicename", "configdir",
2029
"use_dbus", "use_ipv6", "debuglevel", "restore",
2030
"statedir"):
3057
2031
value = getattr(options, option)
3058
2032
if value is not None:
3059
2033
server_settings[option] = value
3060
2034
del options
3061
2035
# Force all strings to be unicode
3062
2036
for option in server_settings.keys():
3063
if isinstance(server_settings[option], bytes):
3064
server_settings[option] = (server_settings[option]
3065
.decode("utf-8"))
3066
# Force all boolean options to be boolean
3067
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3068
"foreground", "zeroconf"):
3069
server_settings[option] = bool(server_settings[option])
3070
# Debug implies foreground
3071
if server_settings["debug"]:
3072
server_settings["foreground"] = True
2037
if type(server_settings[option]) is str:
2038
server_settings[option] = unicode(server_settings[option])
3073
2039
# Now we have our good server settings in "server_settings"
3074
2040
3075
2041
##################################################################
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
2042
3082
2043
# For convenience
3083
2044
debug = server_settings["debug"]
3084
2045
debuglevel = server_settings["debuglevel"]
3086
2047
use_ipv6 = server_settings["use_ipv6"]
3087
2048
stored_state_path = os.path.join(server_settings["statedir"],
3088
2049
stored_state_file)
3089
foreground = server_settings["foreground"]
3090
zeroconf = server_settings["zeroconf"]
3091
2050
3092
2051
if debug:
3093
initlogger(debug, logging.DEBUG)
2052
initlogger(logging.DEBUG)
3094
2053
else:
3095
2054
if not debuglevel:
3096
initlogger(debug)
2055
initlogger()
3097
2056
else:
3098
2057
level = getattr(logging, debuglevel.upper())
3099
initlogger(debug, level)
3100
2058
initlogger(level)
2059
3101
2060
if server_settings["servicename"] != "Mandos":
3102
syslogger.setFormatter(
3103
logging.Formatter('Mandos ({}) [%(process)d]:'
3104
' %(levelname)s: %(message)s'.format(
3105
server_settings["servicename"])))
3106
2061
syslogger.setFormatter(logging.Formatter
2062
('Mandos (%s) [%%(process)d]:'
2063
' %%(levelname)s: %%(message)s'
2064
% server_settings["servicename"]))
2065
3107
2066
# Parse config file with clients
3108
client_config = configparser.ConfigParser(Client.client_defaults)
2067
client_defaults = { "timeout": "5m",
2068
"extended_timeout": "15m",
2069
"interval": "2m",
2070
"checker": "fping -q -- %%(host)s",
2071
"host": "",
2072
"approval_delay": "0s",
2073
"approval_duration": "1s",
2074
}
2075
client_config = configparser.SafeConfigParser(client_defaults)
3109
2076
client_config.read(os.path.join(server_settings["configdir"],
3110
2077
"clients.conf"))
3111
2078
3112
2079
global mandos_dbus_service
3113
2080
mandos_dbus_service = 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)
3126
if not foreground:
3127
pidfilename = "/run/mandos.pid"
3128
if not os.path.isdir("/run/."):
3129
pidfilename = "/var/run/mandos.pid"
3130
pidfile = None
3131
try:
3132
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3133
except IOError as e:
3134
logger.error("Could not open file %r", pidfilename,
3135
exc_info=e)
3136
3137
for name, group in (("_mandos", "_mandos"),
3138
("mandos", "mandos"),
3139
("nobody", "nogroup")):
3140
try:
3141
uid = pwd.getpwnam(name).pw_uid
3142
gid = pwd.getpwnam(group).pw_gid
3143
break
2081
2082
tcp_server = MandosServer((server_settings["address"],
2083
server_settings["port"]),
2084
ClientHandler,
2085
interface=(server_settings["interface"]
2086
or None),
2087
use_ipv6=use_ipv6,
2088
gnutls_priority=
2089
server_settings["priority"],
2090
use_dbus=use_dbus)
2091
if not debug:
2092
pidfilename = "/var/run/mandos.pid"
2093
try:
2094
pidfile = open(pidfilename, "w")
2095
except IOError:
2096
logger.error("Could not open file %r", pidfilename)
2097
2098
try:
2099
uid = pwd.getpwnam("_mandos").pw_uid
2100
gid = pwd.getpwnam("_mandos").pw_gid
2101
except KeyError:
2102
try:
2103
uid = pwd.getpwnam("mandos").pw_uid
2104
gid = pwd.getpwnam("mandos").pw_gid
3144
2105
except KeyError:
3145
continue
3146
else:
3147
uid = 65534
3148
gid = 65534
2106
try:
2107
uid = pwd.getpwnam("nobody").pw_uid
2108
gid = pwd.getpwnam("nobody").pw_gid
2109
except KeyError:
2110
uid = 65534
2111
gid = 65534
3149
2112
try:
3150
2113
os.setgid(gid)
3151
2114
os.setuid(uid)
3152
if debug:
3153
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3154
gid))
3155
2115
except OSError as error:
3156
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3157
.format(uid, gid, os.strerror(error.errno)))
3158
if error.errno != errno.EPERM:
3159
raise
3160
2116
if error[0] != errno.EPERM:
2117
raise error
2118
3161
2119
if debug:
3162
2120
# Enable all possible GnuTLS debugging
3163
2121
3164
2122
# "Use a log level over 10 to enable all debugging options."
3165
2123
# - GnuTLS manual
3166
gnutls.global_set_log_level(11)
3167
3168
@gnutls.log_func
2124
gnutls.library.functions.gnutls_global_set_log_level(11)
2125
2126
@gnutls.library.types.gnutls_log_func
3169
2127
def debug_gnutls(level, string):
3170
2128
logger.debug("GnuTLS: %s", string[:-1])
3171
3172
gnutls.global_set_log_function(debug_gnutls)
3173
2129
2130
(gnutls.library.functions
2131
.gnutls_global_set_log_function(debug_gnutls))
2132
3174
2133
# Redirect stdin so all checkers get /dev/null
3175
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2134
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3176
2135
os.dup2(null, sys.stdin.fileno())
3177
2136
if null > 2:
3178
2137
os.close(null)
3179
2138
else:
2139
# No console logging
2140
logger.removeHandler(console)
2141
3180
2142
# Need to fork before connecting to D-Bus
3181
if not foreground:
2143
if not debug:
3182
2144
# Close all input and output, do double fork, etc.
3183
2145
daemon()
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
2146
3190
2147
global main_loop
3191
2148
# From the Avahi example code
3192
DBusGMainLoop(set_as_default=True)
3193
main_loop = GLib.MainLoop()
2149
DBusGMainLoop(set_as_default=True )
2150
main_loop = gobject.MainLoop()
3194
2151
bus = dbus.SystemBus()
3195
2152
# End of Avahi example code
3196
2153
if use_dbus:
3197
2154
try:
3198
2155
bus_name = dbus.service.BusName("se.recompile.Mandos",
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:
3205
logger.error("Disabling D-Bus:", exc_info=e)
2156
bus, do_not_queue=True)
2157
old_bus_name = (dbus.service.BusName
2158
("se.bsnet.fukt.Mandos", bus,
2159
do_not_queue=True))
2160
except dbus.exceptions.NameExistsException as e:
2161
logger.error(unicode(e) + ", disabling D-Bus")
3206
2162
use_dbus = False
3207
2163
server_settings["use_dbus"] = False
3208
2164
tcp_server.use_dbus = False
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
2165
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2166
service = AvahiServiceToSyslog(name =
2167
server_settings["servicename"],
2168
servicetype = "_mandos._tcp",
2169
protocol = protocol, bus = bus)
2170
if server_settings["interface"]:
2171
service.interface = (if_nametoindex
2172
(str(server_settings["interface"])))
2173
3220
2174
global multiprocessing_manager
3221
2175
multiprocessing_manager = multiprocessing.Manager()
3222
2176
3223
2177
client_class = Client
3224
2178
if use_dbus:
3225
client_class = functools.partial(ClientDBus, bus=bus)
3226
3227
client_settings = Client.config_parser(client_config)
2179
client_class = functools.partial(ClientDBusTransitional,
2180
bus = bus)
2181
2182
special_settings = {
2183
# Some settings need to be accessd by special methods;
2184
# booleans need .getboolean(), etc. Here is a list of them:
2185
"approved_by_default":
2186
lambda section:
2187
client_config.getboolean(section, "approved_by_default"),
2188
"enabled":
2189
lambda section:
2190
client_config.getboolean(section, "enabled"),
2191
}
2192
# Construct a new dict of client settings of this form:
2193
# { client_name: {setting_name: value, ...}, ...}
2194
# with exceptions for any special settings as defined above
2195
client_settings = dict((clientname,
2196
dict((setting,
2197
(value
2198
if setting not in special_settings
2199
else special_settings[setting]
2200
(clientname)))
2201
for setting, value in
2202
client_config.items(clientname)))
2203
for clientname in client_config.sections())
2204
3228
2205
old_client_settings = {}
3229
clients_data = {}
3230
3231
# This is used to redirect stdout and stderr for checker processes
3232
global wnull
3233
wnull = open(os.devnull, "w") # A writable /dev/null
3234
# Only used if server is running in foreground but not in debug
3235
# mode
3236
if debug or not foreground:
3237
wnull.close()
3238
2206
clients_data = []
2207
3239
2208
# Get client data and settings from last running state.
3240
2209
if server_settings["restore"]:
3241
2210
try:
3242
2211
with open(stored_state_path, "rb") as 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"))
2212
clients_data, old_client_settings = (pickle.load
2213
(stored_state))
3293
2214
os.remove(stored_state_path)
3294
2215
except IOError as e:
3295
if e.errno == errno.ENOENT:
3296
logger.warning("Could not load persistent state:"
3297
" {}".format(os.strerror(e.errno)))
3298
else:
3299
logger.critical("Could not load persistent state:",
3300
exc_info=e)
2216
logger.warning("Could not load persistent state: {0}"
2217
.format(e))
2218
if e.errno != errno.ENOENT:
3301
2219
raise
3302
except EOFError as e:
3303
logger.warning("Could not load persistent state: "
3304
"EOFError:",
3305
exc_info=e)
3306
3307
with PGPEngine() as pgp:
3308
for client_name, client in clients_data.items():
3309
# Skip removed clients
3310
if client_name not in client_settings:
3311
continue
3312
2220
2221
with Crypto() as crypt:
2222
for client in clients_data:
2223
client_name = client["name"]
2224
3313
2225
# Decide which value to use after restoring saved state.
3314
2226
# We have three different values: Old config file,
3315
2227
# new config file, and saved state.
3320
2232
# For each value in new config, check if it
3321
2233
# differs from the old config value (Except for
3322
2234
# the "secret" attribute)
3323
if (name != "secret"
3324
and (value !=
3325
old_client_settings[client_name][name])):
3326
client[name] = value
2235
if (name != "secret" and
2236
value != old_client_settings[client_name]
2237
[name]):
2238
setattr(client, name, value)
3327
2239
except KeyError:
3328
2240
pass
3329
2241
3330
2242
# Clients who has passed its expire date can still be
3331
# enabled if its last checker was successful. A Client
3332
# whose checker succeeded before we stored its state is
3333
# assumed to have successfully run all checkers during
3334
# downtime.
3335
if client["enabled"]:
3336
if datetime.datetime.utcnow() >= client["expires"]:
3337
if not client["last_checked_ok"]:
3338
logger.warning(
3339
"disabling client {} - Client never "
3340
"performed a successful checker".format(
3341
client_name))
3342
client["enabled"] = False
3343
elif client["last_checker_status"] != 0:
3344
logger.warning(
3345
"disabling client {} - Client last"
3346
" checker failed with error code"
3347
" {}".format(
3348
client_name,
3349
client["last_checker_status"]))
2243
# enabled if its last checker was sucessful. Clients
2244
# whose checker failed before we stored its state is
2245
# assumed to have failed all checkers during downtime.
2246
if client["enabled"] and client["last_checked_ok"]:
2247
if ((datetime.datetime.utcnow()
2248
- client["last_checked_ok"])
2249
> client["interval"]):
2250
if client["last_checker_status"] != 0:
3350
2251
client["enabled"] = False
3351
2252
else:
3352
client["expires"] = (
3353
datetime.datetime.utcnow()
3354
+ client["timeout"])
3355
logger.debug("Last checker succeeded,"
3356
" keeping {} enabled".format(
3357
client_name))
2253
client["expires"] = (datetime.datetime
2254
.utcnow()
2255
+ client["timeout"])
2256
2257
client["changedstate"] = (multiprocessing_manager
2258
.Condition
2259
(multiprocessing_manager
2260
.Lock()))
2261
if use_dbus:
2262
new_client = (ClientDBusTransitional.__new__
2263
(ClientDBusTransitional))
2264
tcp_server.clients[client_name] = new_client
2265
new_client.bus = bus
2266
for name, value in client.iteritems():
2267
setattr(new_client, name, value)
2268
client_object_name = unicode(client_name).translate(
2269
{ord("."): ord("_"),
2270
ord("-"): ord("_")})
2271
new_client.dbus_object_path = (dbus.ObjectPath
2272
("/clients/"
2273
+ client_object_name))
2274
DBusObjectWithProperties.__init__(new_client,
2275
new_client.bus,
2276
new_client
2277
.dbus_object_path)
2278
else:
2279
tcp_server.clients[client_name] = (Client.__new__
2280
(Client))
2281
for name, value in client.iteritems():
2282
setattr(tcp_server.clients[client_name],
2283
name, value)
2284
3358
2285
try:
3359
client["secret"] = pgp.decrypt(
3360
client["encrypted_secret"],
2286
tcp_server.clients[client_name].secret = (
2287
crypt.decrypt(tcp_server.clients[client_name]
2288
.encrypted_secret,
2289
client_settings[client_name]
2290
["secret"]))
2291
except CryptoError:
2292
# If decryption fails, we use secret from new settings
2293
tcp_server.clients[client_name].secret = (
3361
2294
client_settings[client_name]["secret"])
3362
except PGPError:
3363
# If decryption fails, we use secret from new settings
3364
logger.debug("Failed to decrypt {} old secret".format(
3365
client_name))
3366
client["secret"] = (client_settings[client_name]
3367
["secret"])
3368
3369
# Add/remove clients based on new changes made to config
3370
for client_name in (set(old_client_settings)
3371
- set(client_settings)):
3372
del clients_data[client_name]
3373
for client_name in (set(client_settings)
3374
- set(old_client_settings)):
3375
clients_data[client_name] = client_settings[client_name]
3376
3377
# Create all client objects
3378
for client_name, client in clients_data.items():
3379
tcp_server.clients[client_name] = client_class(
3380
name=client_name,
3381
settings=client,
3382
server_settings=server_settings)
3383
2295
2296
# Create/remove clients based on new changes made to config
2297
for clientname in set(old_client_settings) - set(client_settings):
2298
del tcp_server.clients[clientname]
2299
for clientname in set(client_settings) - set(old_client_settings):
2300
tcp_server.clients[clientname] = (client_class(name
2301
= clientname,
2302
config =
2303
client_settings
2304
[clientname]))
2305
3384
2306
if not tcp_server.clients:
3385
2307
logger.warning("No clients defined")
3386
3387
if not foreground:
3388
if pidfile is not None:
3389
pid = os.getpid()
3390
try:
3391
with pidfile:
3392
print(pid, file=pidfile)
3393
except IOError:
3394
logger.error("Could not write to file %r with PID %d",
3395
pidfilename, pid)
3396
del pidfile
2308
2309
if not debug:
2310
try:
2311
with pidfile:
2312
pid = os.getpid()
2313
pidfile.write(str(pid) + "\n".encode("utf-8"))
2314
del pidfile
2315
except IOError:
2316
logger.error("Could not write to file %r with PID %d",
2317
pidfilename, pid)
2318
except NameError:
2319
# "pidfile" was never created
2320
pass
3397
2321
del pidfilename
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
2322
2323
signal.signal(signal.SIGINT, signal.SIG_IGN)
2324
2325
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2326
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2327
3403
2328
if use_dbus:
3404
3405
@alternate_dbus_interfaces(
3406
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3407
class MandosDBusService(DBusObjectWithObjectManager):
2329
class MandosDBusService(dbus.service.Object):
3408
2330
"""A D-Bus proxy object"""
3409
3410
2331
def __init__(self):
3411
2332
dbus.service.Object.__init__(self, bus, "/")
3412
3413
2333
_interface = "se.recompile.Mandos"
3414
2334
3415
2335
@dbus.service.signal(_interface, signature="o")
3416
2336
def ClientAdded(self, objpath):
3417
2337
"D-Bus signal"
3418
2338
pass
3419
2339
3420
2340
@dbus.service.signal(_interface, signature="ss")
3421
def ClientNotFound(self, key_id, address):
2341
def ClientNotFound(self, fingerprint, address):
3422
2342
"D-Bus signal"
3423
2343
pass
3424
3425
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3426
"true"})
2344
3427
2345
@dbus.service.signal(_interface, signature="os")
3428
2346
def ClientRemoved(self, objpath, name):
3429
2347
"D-Bus signal"
3430
2348
pass
3431
3432
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3433
"true"})
2349
3434
2350
@dbus.service.method(_interface, out_signature="ao")
3435
2351
def GetAllClients(self):
3436
2352
"D-Bus method"
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"})
2353
return dbus.Array(c.dbus_object_path
2354
for c in
2355
tcp_server.clients.itervalues())
2356
3442
2357
@dbus.service.method(_interface,
3443
2358
out_signature="a{oa{sv}}")
3444
2359
def GetAllClientsWithProperties(self):
3445
2360
"D-Bus method"
3446
2361
return dbus.Dictionary(
3447
{c.dbus_object_path: c.GetAll(
3448
"se.recompile.Mandos.Client")
3449
for c in tcp_server.clients.values()},
2362
((c.dbus_object_path, c.GetAll(""))
2363
for c in tcp_server.clients.itervalues()),
3450
2364
signature="oa{sv}")
3451
2365
3452
2366
@dbus.service.method(_interface, in_signature="o")
3453
2367
def RemoveClient(self, object_path):
3454
2368
"D-Bus method"
3455
for c in tcp_server.clients.values():
2369
for c in tcp_server.clients.itervalues():
3456
2370
if c.dbus_object_path == object_path:
3457
2371
del tcp_server.clients[c.name]
3458
2372
c.remove_from_connection()
3459
# Don't signal the disabling
2373
# Don't signal anything except ClientRemoved
3460
2374
c.disable(quiet=True)
3461
# Emit D-Bus signal for removal
3462
self.client_removed_signal(c)
2375
# Emit D-Bus signal
2376
self.ClientRemoved(object_path, c.name)
3463
2377
return
3464
2378
raise KeyError(object_path)
3465
2379
3466
2380
del _interface
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
3504
mandos_dbus_service = MandosDBusService()
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
2381
2382
class MandosDBusServiceTransitional(MandosDBusService):
2383
__metaclass__ = AlternateDBusNamesMetaclass
2384
mandos_dbus_service = MandosDBusServiceTransitional()
2385
3511
2386
def cleanup():
3512
2387
"Cleanup function; run on exit"
3513
if zeroconf:
3514
service.cleanup()
3515
3516
mp.active_children()
3517
wn.close()
2388
service.cleanup()
2389
2390
multiprocessing.active_children()
3518
2391
if not (tcp_server.clients or client_settings):
3519
2392
return
3520
2393
3521
2394
# Store client before exiting. Secrets are encrypted with key
3522
2395
# based on what config file has. If config file is
3523
2396
# removed/edited, old secret will thus be unrecovable.
3524
clients = {}
3525
with PGPEngine() as pgp:
3526
for client in tcp_server.clients.values():
2397
clients = []
2398
with Crypto() as crypt:
2399
for client in tcp_server.clients.itervalues():
3527
2400
key = client_settings[client.name]["secret"]
3528
client.encrypted_secret = pgp.encrypt(client.secret,
3529
key)
2401
client.encrypted_secret = crypt.encrypt(client.secret,
2402
key)
3530
2403
client_dict = {}
3531
3532
# A list of attributes that can not be pickled
3533
# + secret.
3534
exclude = {"bus", "changedstate", "secret",
3535
"checker", "server_settings"}
3536
for name, typ in inspect.getmembers(dbus.service
3537
.Object):
2404
2405
# A list of attributes that will not be stored when
2406
# shutting down.
2407
exclude = set(("bus", "changedstate", "secret"))
2408
for name, typ in (inspect.getmembers
2409
(dbus.service.Object)):
3538
2410
exclude.add(name)
3539
2411
3540
2412
client_dict["encrypted_secret"] = (client
3541
2413
.encrypted_secret)
3542
2414
for attr in client.client_structure:
3543
2415
if attr not in exclude:
3544
2416
client_dict[attr] = getattr(client, attr)
3545
3546
clients[client.name] = client_dict
2417
2418
clients.append(client_dict)
3547
2419
del client_settings[client.name]["secret"]
3548
2420
3549
2421
try:
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
3559
os.rename(tempname, stored_state_path)
2422
with os.fdopen(os.open(stored_state_path,
2423
os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
2424
0600), "wb") as stored_state:
2425
pickle.dump((clients, client_settings), stored_state)
3560
2426
except (IOError, OSError) as e:
3561
if not debug:
3562
try:
3563
os.remove(tempname)
3564
except NameError:
3565
pass
3566
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3567
logger.warning("Could not save persistent state: {}"
3568
.format(os.strerror(e.errno)))
3569
else:
3570
logger.warning("Could not save persistent state:",
3571
exc_info=e)
2427
logger.warning("Could not save persistent state: {0}"
2428
.format(e))
2429
if e.errno not in (errno.ENOENT, errno.EACCES):
3572
2430
raise
3573
2431
3574
2432
# Delete all clients, and settings from config
3575
2433
while tcp_server.clients:
3576
2434
name, client = tcp_server.clients.popitem()
3577
2435
if use_dbus:
3578
2436
client.remove_from_connection()
3579
# Don't signal the disabling
2437
# Don't signal anything except ClientRemoved
3580
2438
client.disable(quiet=True)
3581
# Emit D-Bus signal for removal
3582
2439
if use_dbus:
3583
mandos_dbus_service.client_removed_signal(client)
2440
# Emit D-Bus signal
2441
mandos_dbus_service.ClientRemoved(client
2442
.dbus_object_path,
2443
client.name)
3584
2444
client_settings.clear()
3585
2445
3586
2446
atexit.register(cleanup)
3587
3588
for client in tcp_server.clients.values():
2447
2448
for client in tcp_server.clients.itervalues():
3589
2449
if use_dbus:
3590
# Emit D-Bus signal for adding
3591
mandos_dbus_service.client_added_signal(client)
2450
# Emit D-Bus signal
2451
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3592
2452
# Need to initiate checking of clients
3593
2453
if client.enabled:
3594
2454
client.init_checker()
3595
2455
3596
2456
tcp_server.enable()
3597
2457
tcp_server.server_activate()
3598
2458
3599
2459
# Find out what port we got
3600
if zeroconf:
3601
service.port = tcp_server.socket.getsockname()[1]
2460
service.port = tcp_server.socket.getsockname()[1]
3602
2461
if use_ipv6:
3603
2462
logger.info("Now listening on address %r, port %d,"
3604
" flowinfo %d, scope_id %d",
3605
*tcp_server.socket.getsockname())
2463
" flowinfo %d, scope_id %d"
2464
% tcp_server.socket.getsockname())
3606
2465
else: # IPv4
3607
logger.info("Now listening on address %r, port %d",
3608
*tcp_server.socket.getsockname())
3609
3610
# service.interface = tcp_server.socket.getsockname()[3]
3611
2466
logger.info("Now listening on address %r, port %d"
2467
% tcp_server.socket.getsockname())
2468
2469
#service.interface = tcp_server.socket.getsockname()[3]
2470
3612
2471
try:
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
2472
# From the Avahi example code
2473
try:
2474
service.activate()
2475
except dbus.exceptions.DBusException as error:
2476
logger.critical("DBusException: %s", error)
2477
cleanup()
2478
sys.exit(1)
2479
# End of Avahi example code
2480
2481
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2482
lambda *args, **kwargs:
2483
(tcp_server.handle_request
2484
(*args[2:], **kwargs) or True))
2485
3629
2486
logger.debug("Starting main loop")
3630
2487
main_loop.run()
3631
2488
except AvahiError as error:
3632
logger.critical("Avahi Error", exc_info=error)
2489
logger.critical("AvahiError: %s", error)
3633
2490
cleanup()
3634
2491
sys.exit(1)
3635
2492
except KeyboardInterrupt:
3640
2497
# Must run before the D-Bus bus name gets deregistered
3641
2498
cleanup()
3642
2499
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
2500
3660
2501
if __name__ == '__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()
2502
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0