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- Committer: teddy at recompile
- Date: 2020-02-05 21:39:28 UTC
- Revision ID: teddy@recompile.se-20200205213928-vpvt0fwfg47ikv6f
Allow users to alter ask-password-mandos.service
If a user uses dracut with systemd and wishes to modify the options
passed to password-agent(8mandos) or mandos-client(8mandos), they
should be able to do so by simply creating a file
/etc/systemd/system/ask-password-mandos.service.d/override.conf,
containing, for instance:
[Service]
Environment=MANDOS_CLIENT_OPTIONS=--debug
Adding PASSWORD_AGENT_OPTIONS should also be possible (but should not
normally be needed).
* dracut-module/ask-password-mandos.service ([Service]/ExecStart): Add
$PASSWORD_AGENT_OPTIONS before "--" and "$MANDOS_CLIENT_OPTIONS" to
end of line.
* dracut-module/module-setup.sh (install): Install all files named
/etc/systemd/system/ask-password-mandos.service.d/*.conf if any
exists. Also add --dh-params before $MANDOS_CLIENT_OPTIONS instead
of at end of line.
If a user uses dracut with systemd and wishes to modify the options
passed to password-agent(8mandos) or mandos-client(8mandos), they
should be able to do so by simply creating a file
/etc/systemd/system/ask-password-mandos.service.d/override.conf,
containing, for instance:
[Service]
Environment=MANDOS_CLIENT_OPTIONS=--debug
Adding PASSWORD_AGENT_OPTIONS should also be possible (but should not
normally be needed).
* dracut-module/ask-password-mandos.service ([Service]/ExecStart): Add
$PASSWORD_AGENT_OPTIONS before "--" and "$MANDOS_CLIENT_OPTIONS" to
end of line.
* dracut-module/module-setup.sh (install): Install all files named
/etc/systemd/system/ask-password-mandos.service.d/*.conf if any
exists. Also add --dh-params before $MANDOS_CLIENT_OPTIONS instead
of at end of line.
- files added:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- network-hooks.d
- plugin-helpers
- files removed:
- initramfs-tools-hook-conf
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python
2
# -*- mode: python; coding: utf-8 -*-
3
#
1
#!/usr/bin/python3 -bI
2
# -*- mode: python; after-save-hook: (lambda () (let ((command (if (fboundp 'file-local-name) (file-local-name (buffer-file-name)) (or (file-remote-p (buffer-file-name) 'localname) (buffer-file-name))))) (if (= (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (format "%s --check" (shell-quote-argument command)) nil "*Test*")) 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w))) (progn (with-current-buffer "*Test*" (compilation-mode)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); coding: utf-8 -*-
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2011 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
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
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
32
# Contact the authors at <mandos@recompile.se>.
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
import SocketServer as socketserver
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
38
47
import socket
39
48
import argparse
40
49
import datetime
41
50
import errno
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
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
49
55
import sys
50
56
import re
51
57
import os
60
66
import struct
61
67
import fcntl
62
68
import functools
63
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
64
73
import multiprocessing
74
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
80
import unittest
81
import random
65
82
66
83
import dbus
67
84
import dbus.service
68
import gobject
69
import avahi
85
import gi
86
from gi.repository import GLib
70
87
from dbus.mainloop.glib import DBusGMainLoop
71
88
import ctypes
72
89
import ctypes.util
73
90
import xml.dom.minidom
74
91
import inspect
75
92
93
if sys.version_info.major == 2:
94
__metaclass__ = type
95
str = unicode
96
97
# Show warnings by default
98
if not sys.warnoptions:
99
import warnings
100
warnings.simplefilter("default")
101
102
# Try to find the value of SO_BINDTODEVICE:
76
103
try:
104
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
105
# newer, and it is also the most natural place for it:
77
106
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
78
107
except AttributeError:
79
108
try:
109
# This is where SO_BINDTODEVICE was up to and including Python
110
# 2.6, and also 3.2:
80
111
from IN import SO_BINDTODEVICE
81
112
except ImportError:
82
SO_BINDTODEVICE = None
83
84
85
version = "1.3.1"
86
87
#logger = logging.getLogger('mandos')
88
logger = logging.Logger('mandos')
89
syslogger = (logging.handlers.SysLogHandler
90
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
91
address = str("/dev/log")))
92
syslogger.setFormatter(logging.Formatter
93
('Mandos [%(process)d]: %(levelname)s:'
94
' %(message)s'))
95
logger.addHandler(syslogger)
96
97
console = logging.StreamHandler()
98
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
99
' %(levelname)s:'
100
' %(message)s'))
101
logger.addHandler(console)
113
# In Python 2.7 it seems to have been removed entirely.
114
# Try running the C preprocessor:
115
try:
116
cc = subprocess.Popen(["cc", "--language=c", "-E",
117
"/dev/stdin"],
118
stdin=subprocess.PIPE,
119
stdout=subprocess.PIPE)
120
stdout = cc.communicate(
121
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
122
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
123
except (OSError, ValueError, IndexError):
124
# No value found
125
SO_BINDTODEVICE = None
126
127
if sys.version_info < (3, 2):
128
configparser.Configparser = configparser.SafeConfigParser
129
130
version = "1.8.9"
131
stored_state_file = "clients.pickle"
132
133
logger = logging.getLogger()
134
logging.captureWarnings(True) # Show warnings via the logging system
135
syslogger = None
136
137
try:
138
if_nametoindex = ctypes.cdll.LoadLibrary(
139
ctypes.util.find_library("c")).if_nametoindex
140
except (OSError, AttributeError):
141
142
def if_nametoindex(interface):
143
"Get an interface index the hard way, i.e. using fcntl()"
144
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
145
with contextlib.closing(socket.socket()) as s:
146
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
147
struct.pack(b"16s16x", interface))
148
interface_index = struct.unpack("I", ifreq[16:20])[0]
149
return interface_index
150
151
152
def copy_function(func):
153
"""Make a copy of a function"""
154
if sys.version_info.major == 2:
155
return types.FunctionType(func.func_code,
156
func.func_globals,
157
func.func_name,
158
func.func_defaults,
159
func.func_closure)
160
else:
161
return types.FunctionType(func.__code__,
162
func.__globals__,
163
func.__name__,
164
func.__defaults__,
165
func.__closure__)
166
167
168
def initlogger(debug, level=logging.WARNING):
169
"""init logger and add loglevel"""
170
171
global syslogger
172
syslogger = (logging.handlers.SysLogHandler(
173
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
174
address="/dev/log"))
175
syslogger.setFormatter(logging.Formatter
176
('Mandos [%(process)d]: %(levelname)s:'
177
' %(message)s'))
178
logger.addHandler(syslogger)
179
180
if debug:
181
console = logging.StreamHandler()
182
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
183
' [%(process)d]:'
184
' %(levelname)s:'
185
' %(message)s'))
186
logger.addHandler(console)
187
logger.setLevel(level)
188
189
190
class PGPError(Exception):
191
"""Exception if encryption/decryption fails"""
192
pass
193
194
195
class PGPEngine:
196
"""A simple class for OpenPGP symmetric encryption & decryption"""
197
198
def __init__(self):
199
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
200
self.gpg = "gpg"
201
try:
202
output = subprocess.check_output(["gpgconf"])
203
for line in output.splitlines():
204
name, text, path = line.split(b":")
205
if name == b"gpg":
206
self.gpg = path
207
break
208
except OSError as e:
209
if e.errno != errno.ENOENT:
210
raise
211
self.gnupgargs = ['--batch',
212
'--homedir', self.tempdir,
213
'--force-mdc',
214
'--quiet']
215
# Only GPG version 1 has the --no-use-agent option.
216
if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
217
self.gnupgargs.append("--no-use-agent")
218
219
def __enter__(self):
220
return self
221
222
def __exit__(self, exc_type, exc_value, traceback):
223
self._cleanup()
224
return False
225
226
def __del__(self):
227
self._cleanup()
228
229
def _cleanup(self):
230
if self.tempdir is not None:
231
# Delete contents of tempdir
232
for root, dirs, files in os.walk(self.tempdir,
233
topdown=False):
234
for filename in files:
235
os.remove(os.path.join(root, filename))
236
for dirname in dirs:
237
os.rmdir(os.path.join(root, dirname))
238
# Remove tempdir
239
os.rmdir(self.tempdir)
240
self.tempdir = None
241
242
def password_encode(self, password):
243
# Passphrase can not be empty and can not contain newlines or
244
# NUL bytes. So we prefix it and hex encode it.
245
encoded = b"mandos" + binascii.hexlify(password)
246
if len(encoded) > 2048:
247
# GnuPG can't handle long passwords, so encode differently
248
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
249
.replace(b"\n", b"\\n")
250
.replace(b"\0", b"\\x00"))
251
return encoded
252
253
def encrypt(self, data, password):
254
passphrase = self.password_encode(password)
255
with tempfile.NamedTemporaryFile(
256
dir=self.tempdir) as passfile:
257
passfile.write(passphrase)
258
passfile.flush()
259
proc = subprocess.Popen([self.gpg, '--symmetric',
260
'--passphrase-file',
261
passfile.name]
262
+ self.gnupgargs,
263
stdin=subprocess.PIPE,
264
stdout=subprocess.PIPE,
265
stderr=subprocess.PIPE)
266
ciphertext, err = proc.communicate(input=data)
267
if proc.returncode != 0:
268
raise PGPError(err)
269
return ciphertext
270
271
def decrypt(self, data, password):
272
passphrase = self.password_encode(password)
273
with tempfile.NamedTemporaryFile(
274
dir=self.tempdir) as passfile:
275
passfile.write(passphrase)
276
passfile.flush()
277
proc = subprocess.Popen([self.gpg, '--decrypt',
278
'--passphrase-file',
279
passfile.name]
280
+ self.gnupgargs,
281
stdin=subprocess.PIPE,
282
stdout=subprocess.PIPE,
283
stderr=subprocess.PIPE)
284
decrypted_plaintext, err = proc.communicate(input=data)
285
if proc.returncode != 0:
286
raise PGPError(err)
287
return decrypted_plaintext
288
289
290
# Pretend that we have an Avahi module
291
class avahi:
292
"""This isn't so much a class as it is a module-like namespace."""
293
IF_UNSPEC = -1 # avahi-common/address.h
294
PROTO_UNSPEC = -1 # avahi-common/address.h
295
PROTO_INET = 0 # avahi-common/address.h
296
PROTO_INET6 = 1 # avahi-common/address.h
297
DBUS_NAME = "org.freedesktop.Avahi"
298
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
299
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
300
DBUS_PATH_SERVER = "/"
301
302
@staticmethod
303
def string_array_to_txt_array(t):
304
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
305
for s in t), signature="ay")
306
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
307
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
308
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
309
SERVER_INVALID = 0 # avahi-common/defs.h
310
SERVER_REGISTERING = 1 # avahi-common/defs.h
311
SERVER_RUNNING = 2 # avahi-common/defs.h
312
SERVER_COLLISION = 3 # avahi-common/defs.h
313
SERVER_FAILURE = 4 # avahi-common/defs.h
314
102
315
103
316
class AvahiError(Exception):
104
317
def __init__(self, value, *args, **kwargs):
105
318
self.value = value
106
super(AvahiError, self).__init__(value, *args, **kwargs)
107
def __unicode__(self):
108
return unicode(repr(self.value))
319
return super(AvahiError, self).__init__(value, *args,
320
**kwargs)
321
109
322
110
323
class AvahiServiceError(AvahiError):
111
324
pass
112
325
326
113
327
class AvahiGroupError(AvahiError):
114
328
pass
115
329
116
330
117
class AvahiService(object):
331
class AvahiService:
118
332
"""An Avahi (Zeroconf) service.
119
333
120
334
Attributes:
121
335
interface: integer; avahi.IF_UNSPEC or an interface index.
122
336
Used to optionally bind to the specified interface.
123
337
name: string; Example: 'Mandos'
124
338
type: string; Example: '_mandos._tcp'.
125
See <http://www.dns-sd.org/ServiceTypes.html>
339
See <https://www.iana.org/assignments/service-names-port-numbers>
126
340
port: integer; what port to announce
127
341
TXT: list of strings; TXT record for the service
128
342
domain: string; Domain to publish on, default to .local if empty.
134
348
server: D-Bus Server
135
349
bus: dbus.SystemBus()
136
350
"""
137
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
138
servicetype = None, port = None, TXT = None,
139
domain = "", host = "", max_renames = 32768,
140
protocol = avahi.PROTO_UNSPEC, bus = None):
351
352
def __init__(self,
353
interface=avahi.IF_UNSPEC,
354
name=None,
355
servicetype=None,
356
port=None,
357
TXT=None,
358
domain="",
359
host="",
360
max_renames=32768,
361
protocol=avahi.PROTO_UNSPEC,
362
bus=None):
141
363
self.interface = interface
142
364
self.name = name
143
365
self.type = servicetype
152
374
self.server = None
153
375
self.bus = bus
154
376
self.entry_group_state_changed_match = None
155
def rename(self):
377
378
def rename(self, remove=True):
156
379
"""Derived from the Avahi example code"""
157
380
if self.rename_count >= self.max_renames:
158
381
logger.critical("No suitable Zeroconf service name found"
159
382
" after %i retries, exiting.",
160
383
self.rename_count)
161
384
raise AvahiServiceError("Too many renames")
162
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
385
self.name = str(
386
self.server.GetAlternativeServiceName(self.name))
387
self.rename_count += 1
163
388
logger.info("Changing Zeroconf service name to %r ...",
164
389
self.name)
165
syslogger.setFormatter(logging.Formatter
166
('Mandos (%s) [%%(process)d]:'
167
' %%(levelname)s: %%(message)s'
168
% self.name))
169
self.remove()
390
if remove:
391
self.remove()
170
392
try:
171
393
self.add()
172
394
except dbus.exceptions.DBusException as error:
173
logger.critical("DBusException: %s", error)
174
self.cleanup()
175
os._exit(1)
176
self.rename_count += 1
395
if (error.get_dbus_name()
396
== "org.freedesktop.Avahi.CollisionError"):
397
logger.info("Local Zeroconf service name collision.")
398
return self.rename(remove=False)
399
else:
400
logger.critical("D-Bus Exception", exc_info=error)
401
self.cleanup()
402
os._exit(1)
403
177
404
def remove(self):
178
405
"""Derived from the Avahi example code"""
179
406
if self.entry_group_state_changed_match is not None:
181
408
self.entry_group_state_changed_match = None
182
409
if self.group is not None:
183
410
self.group.Reset()
411
184
412
def add(self):
185
413
"""Derived from the Avahi example code"""
186
414
self.remove()
191
419
avahi.DBUS_INTERFACE_ENTRY_GROUP)
192
420
self.entry_group_state_changed_match = (
193
421
self.group.connect_to_signal(
194
'StateChanged', self .entry_group_state_changed))
422
'StateChanged', self.entry_group_state_changed))
195
423
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
196
424
self.name, self.type)
197
425
self.group.AddService(
203
431
dbus.UInt16(self.port),
204
432
avahi.string_array_to_txt_array(self.TXT))
205
433
self.group.Commit()
434
206
435
def entry_group_state_changed(self, state, error):
207
436
"""Derived from the Avahi example code"""
208
437
logger.debug("Avahi entry group state change: %i", state)
209
438
210
439
if state == avahi.ENTRY_GROUP_ESTABLISHED:
211
440
logger.debug("Zeroconf service established.")
212
441
elif state == avahi.ENTRY_GROUP_COLLISION:
214
443
self.rename()
215
444
elif state == avahi.ENTRY_GROUP_FAILURE:
216
445
logger.critical("Avahi: Error in group state changed %s",
217
unicode(error))
218
raise AvahiGroupError("State changed: %s"
219
% unicode(error))
446
str(error))
447
raise AvahiGroupError("State changed: {!s}".format(error))
448
220
449
def cleanup(self):
221
450
"""Derived from the Avahi example code"""
222
451
if self.group is not None:
223
452
try:
224
453
self.group.Free()
225
454
except (dbus.exceptions.UnknownMethodException,
226
dbus.exceptions.DBusException) as e:
455
dbus.exceptions.DBusException):
227
456
pass
228
457
self.group = None
229
458
self.remove()
459
230
460
def server_state_changed(self, state, error=None):
231
461
"""Derived from the Avahi example code"""
232
462
logger.debug("Avahi server state change: %i", state)
233
bad_states = { avahi.SERVER_INVALID:
234
"Zeroconf server invalid",
235
avahi.SERVER_REGISTERING: None,
236
avahi.SERVER_COLLISION:
237
"Zeroconf server name collision",
238
avahi.SERVER_FAILURE:
239
"Zeroconf server failure" }
463
bad_states = {
464
avahi.SERVER_INVALID: "Zeroconf server invalid",
465
avahi.SERVER_REGISTERING: None,
466
avahi.SERVER_COLLISION: "Zeroconf server name collision",
467
avahi.SERVER_FAILURE: "Zeroconf server failure",
468
}
240
469
if state in bad_states:
241
470
if bad_states[state] is not None:
242
471
if error is None:
245
474
logger.error(bad_states[state] + ": %r", error)
246
475
self.cleanup()
247
476
elif state == avahi.SERVER_RUNNING:
248
self.add()
477
try:
478
self.add()
479
except dbus.exceptions.DBusException as error:
480
if (error.get_dbus_name()
481
== "org.freedesktop.Avahi.CollisionError"):
482
logger.info("Local Zeroconf service name"
483
" collision.")
484
return self.rename(remove=False)
485
else:
486
logger.critical("D-Bus Exception", exc_info=error)
487
self.cleanup()
488
os._exit(1)
249
489
else:
250
490
if error is None:
251
491
logger.debug("Unknown state: %r", state)
252
492
else:
253
493
logger.debug("Unknown state: %r: %r", state, error)
494
254
495
def activate(self):
255
496
"""Derived from the Avahi example code"""
256
497
if self.server is None:
260
501
follow_name_owner_changes=True),
261
502
avahi.DBUS_INTERFACE_SERVER)
262
503
self.server.connect_to_signal("StateChanged",
263
self.server_state_changed)
504
self.server_state_changed)
264
505
self.server_state_changed(self.server.GetState())
265
506
266
507
267
class Client(object):
508
class AvahiServiceToSyslog(AvahiService):
509
def rename(self, *args, **kwargs):
510
"""Add the new name to the syslog messages"""
511
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
512
syslogger.setFormatter(logging.Formatter(
513
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
514
.format(self.name)))
515
return ret
516
517
518
# Pretend that we have a GnuTLS module
519
class gnutls:
520
"""This isn't so much a class as it is a module-like namespace."""
521
522
library = ctypes.util.find_library("gnutls")
523
if library is None:
524
library = ctypes.util.find_library("gnutls-deb0")
525
_library = ctypes.cdll.LoadLibrary(library)
526
del library
527
528
# Unless otherwise indicated, the constants and types below are
529
# all from the gnutls/gnutls.h C header file.
530
531
# Constants
532
E_SUCCESS = 0
533
E_INTERRUPTED = -52
534
E_AGAIN = -28
535
CRT_OPENPGP = 2
536
CRT_RAWPK = 3
537
CLIENT = 2
538
SHUT_RDWR = 0
539
CRD_CERTIFICATE = 1
540
E_NO_CERTIFICATE_FOUND = -49
541
X509_FMT_DER = 0
542
NO_TICKETS = 1<<10
543
ENABLE_RAWPK = 1<<18
544
CTYPE_PEERS = 3
545
KEYID_USE_SHA256 = 1 # gnutls/x509.h
546
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
547
548
# Types
549
class session_int(ctypes.Structure):
550
_fields_ = []
551
session_t = ctypes.POINTER(session_int)
552
553
class certificate_credentials_st(ctypes.Structure):
554
_fields_ = []
555
certificate_credentials_t = ctypes.POINTER(
556
certificate_credentials_st)
557
certificate_type_t = ctypes.c_int
558
559
class datum_t(ctypes.Structure):
560
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
561
('size', ctypes.c_uint)]
562
563
class openpgp_crt_int(ctypes.Structure):
564
_fields_ = []
565
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
566
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
567
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
568
credentials_type_t = ctypes.c_int
569
transport_ptr_t = ctypes.c_void_p
570
close_request_t = ctypes.c_int
571
572
# Exceptions
573
class Error(Exception):
574
def __init__(self, message=None, code=None, args=()):
575
# Default usage is by a message string, but if a return
576
# code is passed, convert it to a string with
577
# gnutls.strerror()
578
self.code = code
579
if message is None and code is not None:
580
message = gnutls.strerror(code)
581
return super(gnutls.Error, self).__init__(
582
message, *args)
583
584
class CertificateSecurityError(Error):
585
pass
586
587
# Classes
588
class Credentials:
589
def __init__(self):
590
self._c_object = gnutls.certificate_credentials_t()
591
gnutls.certificate_allocate_credentials(
592
ctypes.byref(self._c_object))
593
self.type = gnutls.CRD_CERTIFICATE
594
595
def __del__(self):
596
gnutls.certificate_free_credentials(self._c_object)
597
598
class ClientSession:
599
def __init__(self, socket, credentials=None):
600
self._c_object = gnutls.session_t()
601
gnutls_flags = gnutls.CLIENT
602
if gnutls.check_version(b"3.5.6"):
603
gnutls_flags |= gnutls.NO_TICKETS
604
if gnutls.has_rawpk:
605
gnutls_flags |= gnutls.ENABLE_RAWPK
606
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
607
del gnutls_flags
608
gnutls.set_default_priority(self._c_object)
609
gnutls.transport_set_ptr(self._c_object, socket.fileno())
610
gnutls.handshake_set_private_extensions(self._c_object,
611
True)
612
self.socket = socket
613
if credentials is None:
614
credentials = gnutls.Credentials()
615
gnutls.credentials_set(self._c_object, credentials.type,
616
ctypes.cast(credentials._c_object,
617
ctypes.c_void_p))
618
self.credentials = credentials
619
620
def __del__(self):
621
gnutls.deinit(self._c_object)
622
623
def handshake(self):
624
return gnutls.handshake(self._c_object)
625
626
def send(self, data):
627
data = bytes(data)
628
data_len = len(data)
629
while data_len > 0:
630
data_len -= gnutls.record_send(self._c_object,
631
data[-data_len:],
632
data_len)
633
634
def bye(self):
635
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
636
637
# Error handling functions
638
def _error_code(result):
639
"""A function to raise exceptions on errors, suitable
640
for the 'restype' attribute on ctypes functions"""
641
if result >= 0:
642
return result
643
if result == gnutls.E_NO_CERTIFICATE_FOUND:
644
raise gnutls.CertificateSecurityError(code=result)
645
raise gnutls.Error(code=result)
646
647
def _retry_on_error(result, func, arguments):
648
"""A function to retry on some errors, suitable
649
for the 'errcheck' attribute on ctypes functions"""
650
while result < 0:
651
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
652
return _error_code(result)
653
result = func(*arguments)
654
return result
655
656
# Unless otherwise indicated, the function declarations below are
657
# all from the gnutls/gnutls.h C header file.
658
659
# Functions
660
priority_set_direct = _library.gnutls_priority_set_direct
661
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
662
ctypes.POINTER(ctypes.c_char_p)]
663
priority_set_direct.restype = _error_code
664
665
init = _library.gnutls_init
666
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
667
init.restype = _error_code
668
669
set_default_priority = _library.gnutls_set_default_priority
670
set_default_priority.argtypes = [session_t]
671
set_default_priority.restype = _error_code
672
673
record_send = _library.gnutls_record_send
674
record_send.argtypes = [session_t, ctypes.c_void_p,
675
ctypes.c_size_t]
676
record_send.restype = ctypes.c_ssize_t
677
record_send.errcheck = _retry_on_error
678
679
certificate_allocate_credentials = (
680
_library.gnutls_certificate_allocate_credentials)
681
certificate_allocate_credentials.argtypes = [
682
ctypes.POINTER(certificate_credentials_t)]
683
certificate_allocate_credentials.restype = _error_code
684
685
certificate_free_credentials = (
686
_library.gnutls_certificate_free_credentials)
687
certificate_free_credentials.argtypes = [
688
certificate_credentials_t]
689
certificate_free_credentials.restype = None
690
691
handshake_set_private_extensions = (
692
_library.gnutls_handshake_set_private_extensions)
693
handshake_set_private_extensions.argtypes = [session_t,
694
ctypes.c_int]
695
handshake_set_private_extensions.restype = None
696
697
credentials_set = _library.gnutls_credentials_set
698
credentials_set.argtypes = [session_t, credentials_type_t,
699
ctypes.c_void_p]
700
credentials_set.restype = _error_code
701
702
strerror = _library.gnutls_strerror
703
strerror.argtypes = [ctypes.c_int]
704
strerror.restype = ctypes.c_char_p
705
706
certificate_type_get = _library.gnutls_certificate_type_get
707
certificate_type_get.argtypes = [session_t]
708
certificate_type_get.restype = _error_code
709
710
certificate_get_peers = _library.gnutls_certificate_get_peers
711
certificate_get_peers.argtypes = [session_t,
712
ctypes.POINTER(ctypes.c_uint)]
713
certificate_get_peers.restype = ctypes.POINTER(datum_t)
714
715
global_set_log_level = _library.gnutls_global_set_log_level
716
global_set_log_level.argtypes = [ctypes.c_int]
717
global_set_log_level.restype = None
718
719
global_set_log_function = _library.gnutls_global_set_log_function
720
global_set_log_function.argtypes = [log_func]
721
global_set_log_function.restype = None
722
723
deinit = _library.gnutls_deinit
724
deinit.argtypes = [session_t]
725
deinit.restype = None
726
727
handshake = _library.gnutls_handshake
728
handshake.argtypes = [session_t]
729
handshake.restype = _error_code
730
handshake.errcheck = _retry_on_error
731
732
transport_set_ptr = _library.gnutls_transport_set_ptr
733
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
734
transport_set_ptr.restype = None
735
736
bye = _library.gnutls_bye
737
bye.argtypes = [session_t, close_request_t]
738
bye.restype = _error_code
739
bye.errcheck = _retry_on_error
740
741
check_version = _library.gnutls_check_version
742
check_version.argtypes = [ctypes.c_char_p]
743
check_version.restype = ctypes.c_char_p
744
745
_need_version = b"3.3.0"
746
if check_version(_need_version) is None:
747
raise self.Error("Needs GnuTLS {} or later"
748
.format(_need_version))
749
750
_tls_rawpk_version = b"3.6.6"
751
has_rawpk = bool(check_version(_tls_rawpk_version))
752
753
if has_rawpk:
754
# Types
755
class pubkey_st(ctypes.Structure):
756
_fields = []
757
pubkey_t = ctypes.POINTER(pubkey_st)
758
759
x509_crt_fmt_t = ctypes.c_int
760
761
# All the function declarations below are from gnutls/abstract.h
762
pubkey_init = _library.gnutls_pubkey_init
763
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
764
pubkey_init.restype = _error_code
765
766
pubkey_import = _library.gnutls_pubkey_import
767
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
768
x509_crt_fmt_t]
769
pubkey_import.restype = _error_code
770
771
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
772
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
773
ctypes.POINTER(ctypes.c_ubyte),
774
ctypes.POINTER(ctypes.c_size_t)]
775
pubkey_get_key_id.restype = _error_code
776
777
pubkey_deinit = _library.gnutls_pubkey_deinit
778
pubkey_deinit.argtypes = [pubkey_t]
779
pubkey_deinit.restype = None
780
else:
781
# All the function declarations below are from gnutls/openpgp.h
782
783
openpgp_crt_init = _library.gnutls_openpgp_crt_init
784
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
785
openpgp_crt_init.restype = _error_code
786
787
openpgp_crt_import = _library.gnutls_openpgp_crt_import
788
openpgp_crt_import.argtypes = [openpgp_crt_t,
789
ctypes.POINTER(datum_t),
790
openpgp_crt_fmt_t]
791
openpgp_crt_import.restype = _error_code
792
793
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
794
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
795
ctypes.POINTER(ctypes.c_uint)]
796
openpgp_crt_verify_self.restype = _error_code
797
798
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
799
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
800
openpgp_crt_deinit.restype = None
801
802
openpgp_crt_get_fingerprint = (
803
_library.gnutls_openpgp_crt_get_fingerprint)
804
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
805
ctypes.c_void_p,
806
ctypes.POINTER(
807
ctypes.c_size_t)]
808
openpgp_crt_get_fingerprint.restype = _error_code
809
810
if check_version(b"3.6.4"):
811
certificate_type_get2 = _library.gnutls_certificate_type_get2
812
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
813
certificate_type_get2.restype = _error_code
814
815
# Remove non-public functions
816
del _error_code, _retry_on_error
817
818
819
def call_pipe(connection, # : multiprocessing.Connection
820
func, *args, **kwargs):
821
"""This function is meant to be called by multiprocessing.Process
822
823
This function runs func(*args, **kwargs), and writes the resulting
824
return value on the provided multiprocessing.Connection.
825
"""
826
connection.send(func(*args, **kwargs))
827
connection.close()
828
829
830
class Client:
268
831
"""A representation of a client host served by this server.
269
832
270
833
Attributes:
271
_approved: bool(); 'None' if not yet approved/disapproved
834
approved: bool(); 'None' if not yet approved/disapproved
272
835
approval_delay: datetime.timedelta(); Time to wait for approval
273
836
approval_duration: datetime.timedelta(); Duration of one approval
274
checker: subprocess.Popen(); a running checker process used
275
to see if the client lives.
276
'None' if no process is running.
277
checker_callback_tag: a gobject event source tag, or None
837
checker: multiprocessing.Process(); a running checker process used
838
to see if the client lives. 'None' if no process is
839
running.
840
checker_callback_tag: a GLib event source tag, or None
278
841
checker_command: string; External command which is run to check
279
842
if client lives. %() expansions are done at
280
843
runtime with vars(self) as dict, so that for
281
844
instance %(name)s can be used in the command.
282
checker_initiator_tag: a gobject event source tag, or None
845
checker_initiator_tag: a GLib event source tag, or None
283
846
created: datetime.datetime(); (UTC) object creation
847
client_structure: Object describing what attributes a client has
848
and is used for storing the client at exit
284
849
current_checker_command: string; current running checker_command
285
disable_hook: If set, called by disable() as disable_hook(self)
286
disable_initiator_tag: a gobject event source tag, or None
850
disable_initiator_tag: a GLib event source tag, or None
287
851
enabled: bool()
288
852
fingerprint: string (40 or 32 hexadecimal digits); used to
289
uniquely identify the client
853
uniquely identify an OpenPGP client
854
key_id: string (64 hexadecimal digits); used to uniquely identify
855
a client using raw public keys
290
856
host: string; available for use by the checker command
291
857
interval: datetime.timedelta(); How often to start a new checker
292
858
last_approval_request: datetime.datetime(); (UTC) or None
293
859
last_checked_ok: datetime.datetime(); (UTC) or None
294
last_enabled: datetime.datetime(); (UTC)
860
last_checker_status: integer between 0 and 255 reflecting exit
861
status of last checker. -1 reflects crashed
862
checker, -2 means no checker completed yet.
863
last_checker_signal: The signal which killed the last checker, if
864
last_checker_status is -1
865
last_enabled: datetime.datetime(); (UTC) or None
295
866
name: string; from the config file, used in log messages and
296
867
D-Bus identifiers
297
868
secret: bytestring; sent verbatim (over TLS) to client
298
869
timeout: datetime.timedelta(); How long from last_checked_ok
299
870
until this client is disabled
300
extended_timeout: extra long timeout when password has been sent
871
extended_timeout: extra long timeout when secret has been sent
301
872
runtime_expansions: Allowed attributes for runtime expansion.
302
873
expires: datetime.datetime(); time (UTC) when a client will be
303
874
disabled, or None
875
server_settings: The server_settings dict from main()
304
876
"""
305
877
306
878
runtime_expansions = ("approval_delay", "approval_duration",
307
"created", "enabled", "fingerprint",
308
"host", "interval", "last_checked_ok",
879
"created", "enabled", "expires", "key_id",
880
"fingerprint", "host", "interval",
881
"last_approval_request", "last_checked_ok",
309
882
"last_enabled", "name", "timeout")
310
883
client_defaults = {
884
"timeout": "PT5M",
885
"extended_timeout": "PT15M",
886
"interval": "PT2M",
887
"checker": "fping -q -- %%(host)s",
888
"host": "",
889
"approval_delay": "PT0S",
890
"approval_duration": "PT1S",
891
"approved_by_default": "True",
892
"enabled": "True",
893
}
894
311
895
@staticmethod
312
def _timedelta_to_milliseconds(td):
313
"Convert a datetime.timedelta() to milliseconds"
314
return ((td.days * 24 * 60 * 60 * 1000)
315
+ (td.seconds * 1000)
316
+ (td.microseconds // 1000))
317
318
def timeout_milliseconds(self):
319
"Return the 'timeout' attribute in milliseconds"
320
return self._timedelta_to_milliseconds(self.timeout)
321
322
def extended_timeout_milliseconds(self):
323
"Return the 'extended_timeout' attribute in milliseconds"
324
return self._timedelta_to_milliseconds(self.extended_timeout)
325
326
def interval_milliseconds(self):
327
"Return the 'interval' attribute in milliseconds"
328
return self._timedelta_to_milliseconds(self.interval)
329
330
def approval_delay_milliseconds(self):
331
return self._timedelta_to_milliseconds(self.approval_delay)
332
333
def __init__(self, name = None, disable_hook=None, config=None):
334
"""Note: the 'checker' key in 'config' sets the
335
'checker_command' attribute and *not* the 'checker'
336
attribute."""
896
def config_parser(config):
897
"""Construct a new dict of client settings of this form:
898
{ client_name: {setting_name: value, ...}, ...}
899
with exceptions for any special settings as defined above.
900
NOTE: Must be a pure function. Must return the same result
901
value given the same arguments.
902
"""
903
settings = {}
904
for client_name in config.sections():
905
section = dict(config.items(client_name))
906
client = settings[client_name] = {}
907
908
client["host"] = section["host"]
909
# Reformat values from string types to Python types
910
client["approved_by_default"] = config.getboolean(
911
client_name, "approved_by_default")
912
client["enabled"] = config.getboolean(client_name,
913
"enabled")
914
915
# Uppercase and remove spaces from key_id and fingerprint
916
# for later comparison purposes with return value from the
917
# key_id() and fingerprint() functions
918
client["key_id"] = (section.get("key_id", "").upper()
919
.replace(" ", ""))
920
client["fingerprint"] = (section["fingerprint"].upper()
921
.replace(" ", ""))
922
if "secret" in section:
923
client["secret"] = codecs.decode(section["secret"]
924
.encode("utf-8"),
925
"base64")
926
elif "secfile" in section:
927
with open(os.path.expanduser(os.path.expandvars
928
(section["secfile"])),
929
"rb") as secfile:
930
client["secret"] = secfile.read()
931
else:
932
raise TypeError("No secret or secfile for section {}"
933
.format(section))
934
client["timeout"] = string_to_delta(section["timeout"])
935
client["extended_timeout"] = string_to_delta(
936
section["extended_timeout"])
937
client["interval"] = string_to_delta(section["interval"])
938
client["approval_delay"] = string_to_delta(
939
section["approval_delay"])
940
client["approval_duration"] = string_to_delta(
941
section["approval_duration"])
942
client["checker_command"] = section["checker"]
943
client["last_approval_request"] = None
944
client["last_checked_ok"] = None
945
client["last_checker_status"] = -2
946
947
return settings
948
949
def __init__(self, settings, name=None, server_settings=None):
337
950
self.name = name
338
if config is None:
339
config = {}
951
if server_settings is None:
952
server_settings = {}
953
self.server_settings = server_settings
954
# adding all client settings
955
for setting, value in settings.items():
956
setattr(self, setting, value)
957
958
if self.enabled:
959
if not hasattr(self, "last_enabled"):
960
self.last_enabled = datetime.datetime.utcnow()
961
if not hasattr(self, "expires"):
962
self.expires = (datetime.datetime.utcnow()
963
+ self.timeout)
964
else:
965
self.last_enabled = None
966
self.expires = None
967
340
968
logger.debug("Creating client %r", self.name)
341
# Uppercase and remove spaces from fingerprint for later
342
# comparison purposes with return value from the fingerprint()
343
# function
344
self.fingerprint = (config["fingerprint"].upper()
345
.replace(" ", ""))
969
logger.debug(" Key ID: %s", self.key_id)
346
970
logger.debug(" Fingerprint: %s", self.fingerprint)
347
if "secret" in config:
348
self.secret = config["secret"].decode("base64")
349
elif "secfile" in config:
350
with open(os.path.expanduser(os.path.expandvars
351
(config["secfile"])),
352
"rb") as secfile:
353
self.secret = secfile.read()
354
else:
355
raise TypeError("No secret or secfile for client %s"
356
% self.name)
357
self.host = config.get("host", "")
358
self.created = datetime.datetime.utcnow()
359
self.enabled = False
360
self.last_approval_request = None
361
self.last_enabled = None
362
self.last_checked_ok = None
363
self.timeout = string_to_delta(config["timeout"])
364
self.extended_timeout = string_to_delta(config["extended_timeout"])
365
self.interval = string_to_delta(config["interval"])
366
self.disable_hook = disable_hook
971
self.created = settings.get("created",
972
datetime.datetime.utcnow())
973
974
# attributes specific for this server instance
367
975
self.checker = None
368
976
self.checker_initiator_tag = None
369
977
self.disable_initiator_tag = None
370
self.expires = None
371
978
self.checker_callback_tag = None
372
self.checker_command = config["checker"]
373
979
self.current_checker_command = None
374
self.last_connect = None
375
self._approved = None
376
self.approved_by_default = config.get("approved_by_default",
377
True)
980
self.approved = None
378
981
self.approvals_pending = 0
379
self.approval_delay = string_to_delta(
380
config["approval_delay"])
381
self.approval_duration = string_to_delta(
382
config["approval_duration"])
383
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
384
982
self.changedstate = multiprocessing_manager.Condition(
983
multiprocessing_manager.Lock())
984
self.client_structure = [attr
985
for attr in self.__dict__.keys()
986
if not attr.startswith("_")]
987
self.client_structure.append("client_structure")
988
989
for name, t in inspect.getmembers(
990
type(self), lambda obj: isinstance(obj, property)):
991
if not name.startswith("_"):
992
self.client_structure.append(name)
993
994
# Send notice to process children that client state has changed
385
995
def send_changedstate(self):
386
self.changedstate.acquire()
387
self.changedstate.notify_all()
388
self.changedstate.release()
389
996
with self.changedstate:
997
self.changedstate.notify_all()
998
390
999
def enable(self):
391
1000
"""Start this client's checker and timeout hooks"""
392
1001
if getattr(self, "enabled", False):
393
1002
# Already enabled
394
1003
return
395
self.send_changedstate()
1004
self.expires = datetime.datetime.utcnow() + self.timeout
1005
self.enabled = True
396
1006
self.last_enabled = datetime.datetime.utcnow()
397
# Schedule a new checker to be started an 'interval' from now,
398
# and every interval from then on.
399
self.checker_initiator_tag = (gobject.timeout_add
400
(self.interval_milliseconds(),
401
self.start_checker))
402
# Schedule a disable() when 'timeout' has passed
403
self.expires = datetime.datetime.utcnow() + self.timeout
404
self.disable_initiator_tag = (gobject.timeout_add
405
(self.timeout_milliseconds(),
406
self.disable))
407
self.enabled = True
408
# Also start a new checker *right now*.
409
self.start_checker()
410
1007
self.init_checker()
1008
self.send_changedstate()
1009
411
1010
def disable(self, quiet=True):
412
1011
"""Disable this client."""
413
1012
if not getattr(self, "enabled", False):
414
1013
return False
415
1014
if not quiet:
416
self.send_changedstate()
417
if not quiet:
418
1015
logger.info("Disabling client %s", self.name)
419
if getattr(self, "disable_initiator_tag", False):
420
gobject.source_remove(self.disable_initiator_tag)
1016
if getattr(self, "disable_initiator_tag", None) is not None:
1017
GLib.source_remove(self.disable_initiator_tag)
421
1018
self.disable_initiator_tag = None
422
1019
self.expires = None
423
if getattr(self, "checker_initiator_tag", False):
424
gobject.source_remove(self.checker_initiator_tag)
1020
if getattr(self, "checker_initiator_tag", None) is not None:
1021
GLib.source_remove(self.checker_initiator_tag)
425
1022
self.checker_initiator_tag = None
426
1023
self.stop_checker()
427
if self.disable_hook:
428
self.disable_hook(self)
429
1024
self.enabled = False
430
# Do not run this again if called by a gobject.timeout_add
1025
if not quiet:
1026
self.send_changedstate()
1027
# Do not run this again if called by a GLib.timeout_add
431
1028
return False
432
1029
433
1030
def __del__(self):
434
self.disable_hook = None
435
1031
self.disable()
436
437
def checker_callback(self, pid, condition, command):
1032
1033
def init_checker(self):
1034
# Schedule a new checker to be started an 'interval' from now,
1035
# and every interval from then on.
1036
if self.checker_initiator_tag is not None:
1037
GLib.source_remove(self.checker_initiator_tag)
1038
self.checker_initiator_tag = GLib.timeout_add(
1039
random.randrange(int(self.interval.total_seconds() * 1000
1040
+ 1)),
1041
self.start_checker)
1042
# Schedule a disable() when 'timeout' has passed
1043
if self.disable_initiator_tag is not None:
1044
GLib.source_remove(self.disable_initiator_tag)
1045
self.disable_initiator_tag = GLib.timeout_add(
1046
int(self.timeout.total_seconds() * 1000), self.disable)
1047
# Also start a new checker *right now*.
1048
self.start_checker()
1049
1050
def checker_callback(self, source, condition, connection,
1051
command):
438
1052
"""The checker has completed, so take appropriate actions."""
1053
# Read return code from connection (see call_pipe)
1054
returncode = connection.recv()
1055
connection.close()
1056
if self.checker is not None:
1057
self.checker.join()
439
1058
self.checker_callback_tag = None
440
1059
self.checker = None
441
if os.WIFEXITED(condition):
442
exitstatus = os.WEXITSTATUS(condition)
443
if exitstatus == 0:
1060
1061
if returncode >= 0:
1062
self.last_checker_status = returncode
1063
self.last_checker_signal = None
1064
if self.last_checker_status == 0:
444
1065
logger.info("Checker for %(name)s succeeded",
445
1066
vars(self))
446
1067
self.checked_ok()
447
1068
else:
448
logger.info("Checker for %(name)s failed",
449
vars(self))
1069
logger.info("Checker for %(name)s failed", vars(self))
450
1070
else:
1071
self.last_checker_status = -1
1072
self.last_checker_signal = -returncode
451
1073
logger.warning("Checker for %(name)s crashed?",
452
1074
vars(self))
453
454
def checked_ok(self, timeout=None):
455
"""Bump up the timeout for this client.
456
457
This should only be called when the client has been seen,
458
alive and well.
459
"""
1075
return False
1076
1077
def checked_ok(self):
1078
"""Assert that the client has been seen, alive and well."""
1079
self.last_checked_ok = datetime.datetime.utcnow()
1080
self.last_checker_status = 0
1081
self.last_checker_signal = None
1082
self.bump_timeout()
1083
1084
def bump_timeout(self, timeout=None):
1085
"""Bump up the timeout for this client."""
460
1086
if timeout is None:
461
1087
timeout = self.timeout
462
self.last_checked_ok = datetime.datetime.utcnow()
463
gobject.source_remove(self.disable_initiator_tag)
464
self.expires = datetime.datetime.utcnow() + timeout
465
self.disable_initiator_tag = (gobject.timeout_add
466
(self._timedelta_to_milliseconds(timeout),
467
self.disable))
468
1088
if self.disable_initiator_tag is not None:
1089
GLib.source_remove(self.disable_initiator_tag)
1090
self.disable_initiator_tag = None
1091
if getattr(self, "enabled", False):
1092
self.disable_initiator_tag = GLib.timeout_add(
1093
int(timeout.total_seconds() * 1000), self.disable)
1094
self.expires = datetime.datetime.utcnow() + timeout
1095
469
1096
def need_approval(self):
470
1097
self.last_approval_request = datetime.datetime.utcnow()
471
1098
472
1099
def start_checker(self):
473
1100
"""Start a new checker subprocess if one is not running.
474
1101
475
1102
If a checker already exists, leave it running and do
476
1103
nothing."""
477
1104
# The reason for not killing a running checker is that if we
478
# did that, then if a checker (for some reason) started
479
# running slowly and taking more than 'interval' time, the
480
# client would inevitably timeout, since no checker would get
481
# a chance to run to completion. If we instead leave running
1105
# did that, and if a checker (for some reason) started running
1106
# slowly and taking more than 'interval' time, then the client
1107
# would inevitably timeout, since no checker would get a
1108
# chance to run to completion. If we instead leave running
482
1109
# checkers alone, the checker would have to take more time
483
1110
# than 'timeout' for the client to be disabled, which is as it
484
1111
# should be.
485
486
# If a checker exists, make sure it is not a zombie
487
try:
488
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
489
except (AttributeError, OSError) as error:
490
if (isinstance(error, OSError)
491
and error.errno != errno.ECHILD):
492
raise error
493
else:
494
if pid:
495
logger.warning("Checker was a zombie")
496
gobject.source_remove(self.checker_callback_tag)
497
self.checker_callback(pid, status,
498
self.current_checker_command)
1112
1113
if self.checker is not None and not self.checker.is_alive():
1114
logger.warning("Checker was not alive; joining")
1115
self.checker.join()
1116
self.checker = None
499
1117
# Start a new checker if needed
500
1118
if self.checker is None:
1119
# Escape attributes for the shell
1120
escaped_attrs = {
1121
attr: re.escape(str(getattr(self, attr)))
1122
for attr in self.runtime_expansions}
501
1123
try:
502
# In case checker_command has exactly one % operator
503
command = self.checker_command % self.host
504
except TypeError:
505
# Escape attributes for the shell
506
escaped_attrs = dict(
507
(attr,
508
re.escape(unicode(str(getattr(self, attr, "")),
509
errors=
510
'replace')))
511
for attr in
512
self.runtime_expansions)
513
514
try:
515
command = self.checker_command % escaped_attrs
516
except TypeError as error:
517
logger.error('Could not format string "%s":'
518
' %s', self.checker_command, error)
519
return True # Try again later
1124
command = self.checker_command % escaped_attrs
1125
except TypeError as error:
1126
logger.error('Could not format string "%s"',
1127
self.checker_command,
1128
exc_info=error)
1129
return True # Try again later
520
1130
self.current_checker_command = command
521
try:
522
logger.info("Starting checker %r for %s",
523
command, self.name)
524
# We don't need to redirect stdout and stderr, since
525
# in normal mode, that is already done by daemon(),
526
# and in debug mode we don't want to. (Stdin is
527
# always replaced by /dev/null.)
528
self.checker = subprocess.Popen(command,
529
close_fds=True,
530
shell=True, cwd="/")
531
self.checker_callback_tag = (gobject.child_watch_add
532
(self.checker.pid,
533
self.checker_callback,
534
data=command))
535
# The checker may have completed before the gobject
536
# watch was added. Check for this.
537
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
538
if pid:
539
gobject.source_remove(self.checker_callback_tag)
540
self.checker_callback(pid, status, command)
541
except OSError as error:
542
logger.error("Failed to start subprocess: %s",
543
error)
544
# Re-run this periodically if run by gobject.timeout_add
1131
logger.info("Starting checker %r for %s", command,
1132
self.name)
1133
# We don't need to redirect stdout and stderr, since
1134
# in normal mode, that is already done by daemon(),
1135
# and in debug mode we don't want to. (Stdin is
1136
# always replaced by /dev/null.)
1137
# The exception is when not debugging but nevertheless
1138
# running in the foreground; use the previously
1139
# created wnull.
1140
popen_args = {"close_fds": True,
1141
"shell": True,
1142
"cwd": "/"}
1143
if (not self.server_settings["debug"]
1144
and self.server_settings["foreground"]):
1145
popen_args.update({"stdout": wnull,
1146
"stderr": wnull})
1147
pipe = multiprocessing.Pipe(duplex=False)
1148
self.checker = multiprocessing.Process(
1149
target=call_pipe,
1150
args=(pipe[1], subprocess.call, command),
1151
kwargs=popen_args)
1152
self.checker.start()
1153
self.checker_callback_tag = GLib.io_add_watch(
1154
GLib.IOChannel.unix_new(pipe[0].fileno()),
1155
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1156
self.checker_callback, pipe[0], command)
1157
# Re-run this periodically if run by GLib.timeout_add
545
1158
return True
546
1159
547
1160
def stop_checker(self):
548
1161
"""Force the checker process, if any, to stop."""
549
1162
if self.checker_callback_tag:
550
gobject.source_remove(self.checker_callback_tag)
1163
GLib.source_remove(self.checker_callback_tag)
551
1164
self.checker_callback_tag = None
552
1165
if getattr(self, "checker", None) is None:
553
1166
return
554
1167
logger.debug("Stopping checker for %(name)s", vars(self))
555
try:
556
os.kill(self.checker.pid, signal.SIGTERM)
557
#time.sleep(0.5)
558
#if self.checker.poll() is None:
559
# os.kill(self.checker.pid, signal.SIGKILL)
560
except OSError as error:
561
if error.errno != errno.ESRCH: # No such process
562
raise
1168
self.checker.terminate()
563
1169
self.checker = None
564
1170
565
def dbus_service_property(dbus_interface, signature="v",
566
access="readwrite", byte_arrays=False):
1171
1172
def dbus_service_property(dbus_interface,
1173
signature="v",
1174
access="readwrite",
1175
byte_arrays=False):
567
1176
"""Decorators for marking methods of a DBusObjectWithProperties to
568
1177
become properties on the D-Bus.
569
1178
570
1179
The decorated method will be called with no arguments by "Get"
571
1180
and with one argument by "Set".
572
1181
573
1182
The parameters, where they are supported, are the same as
574
1183
dbus.service.method, except there is only "signature", since the
575
1184
type from Get() and the type sent to Set() is the same.
578
1187
# "Set" method, so we fail early here:
579
1188
if byte_arrays and signature != "ay":
580
1189
raise ValueError("Byte arrays not supported for non-'ay'"
581
" signature %r" % signature)
1190
" signature {!r}".format(signature))
1191
582
1192
def decorator(func):
583
1193
func._dbus_is_property = True
584
1194
func._dbus_interface = dbus_interface
587
1197
func._dbus_name = func.__name__
588
1198
if func._dbus_name.endswith("_dbus_property"):
589
1199
func._dbus_name = func._dbus_name[:-14]
590
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
591
return func
1200
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1201
return func
1202
1203
return decorator
1204
1205
1206
def dbus_interface_annotations(dbus_interface):
1207
"""Decorator for marking functions returning interface annotations
1208
1209
Usage:
1210
1211
@dbus_interface_annotations("org.example.Interface")
1212
def _foo(self): # Function name does not matter
1213
return {"org.freedesktop.DBus.Deprecated": "true",
1214
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1215
"false"}
1216
"""
1217
1218
def decorator(func):
1219
func._dbus_is_interface = True
1220
func._dbus_interface = dbus_interface
1221
func._dbus_name = dbus_interface
1222
return func
1223
1224
return decorator
1225
1226
1227
def dbus_annotations(annotations):
1228
"""Decorator to annotate D-Bus methods, signals or properties
1229
Usage:
1230
1231
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1232
"org.freedesktop.DBus.Property."
1233
"EmitsChangedSignal": "false"})
1234
@dbus_service_property("org.example.Interface", signature="b",
1235
access="r")
1236
def Property_dbus_property(self):
1237
return dbus.Boolean(False)
1238
1239
See also the DBusObjectWithAnnotations class.
1240
"""
1241
1242
def decorator(func):
1243
func._dbus_annotations = annotations
1244
return func
1245
592
1246
return decorator
593
1247
594
1248
595
1249
class DBusPropertyException(dbus.exceptions.DBusException):
596
1250
"""A base class for D-Bus property-related exceptions
597
1251
"""
598
def __unicode__(self):
599
return unicode(str(self))
1252
pass
600
1253
601
1254
602
1255
class DBusPropertyAccessException(DBusPropertyException):
611
1264
pass
612
1265
613
1266
614
class DBusObjectWithProperties(dbus.service.Object):
1267
class DBusObjectWithAnnotations(dbus.service.Object):
1268
"""A D-Bus object with annotations.
1269
1270
Classes inheriting from this can use the dbus_annotations
1271
decorator to add annotations to methods or signals.
1272
"""
1273
1274
@staticmethod
1275
def _is_dbus_thing(thing):
1276
"""Returns a function testing if an attribute is a D-Bus thing
1277
1278
If called like _is_dbus_thing("method") it returns a function
1279
suitable for use as predicate to inspect.getmembers().
1280
"""
1281
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1282
False)
1283
1284
def _get_all_dbus_things(self, thing):
1285
"""Returns a generator of (name, attribute) pairs
1286
"""
1287
return ((getattr(athing.__get__(self), "_dbus_name", name),
1288
athing.__get__(self))
1289
for cls in self.__class__.__mro__
1290
for name, athing in
1291
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1292
1293
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1294
out_signature="s",
1295
path_keyword='object_path',
1296
connection_keyword='connection')
1297
def Introspect(self, object_path, connection):
1298
"""Overloading of standard D-Bus method.
1299
1300
Inserts annotation tags on methods and signals.
1301
"""
1302
xmlstring = dbus.service.Object.Introspect(self, object_path,
1303
connection)
1304
try:
1305
document = xml.dom.minidom.parseString(xmlstring)
1306
1307
for if_tag in document.getElementsByTagName("interface"):
1308
# Add annotation tags
1309
for typ in ("method", "signal"):
1310
for tag in if_tag.getElementsByTagName(typ):
1311
annots = dict()
1312
for name, prop in (self.
1313
_get_all_dbus_things(typ)):
1314
if (name == tag.getAttribute("name")
1315
and prop._dbus_interface
1316
== if_tag.getAttribute("name")):
1317
annots.update(getattr(
1318
prop, "_dbus_annotations", {}))
1319
for name, value in annots.items():
1320
ann_tag = document.createElement(
1321
"annotation")
1322
ann_tag.setAttribute("name", name)
1323
ann_tag.setAttribute("value", value)
1324
tag.appendChild(ann_tag)
1325
# Add interface annotation tags
1326
for annotation, value in dict(
1327
itertools.chain.from_iterable(
1328
annotations().items()
1329
for name, annotations
1330
in self._get_all_dbus_things("interface")
1331
if name == if_tag.getAttribute("name")
1332
)).items():
1333
ann_tag = document.createElement("annotation")
1334
ann_tag.setAttribute("name", annotation)
1335
ann_tag.setAttribute("value", value)
1336
if_tag.appendChild(ann_tag)
1337
# Fix argument name for the Introspect method itself
1338
if (if_tag.getAttribute("name")
1339
== dbus.INTROSPECTABLE_IFACE):
1340
for cn in if_tag.getElementsByTagName("method"):
1341
if cn.getAttribute("name") == "Introspect":
1342
for arg in cn.getElementsByTagName("arg"):
1343
if (arg.getAttribute("direction")
1344
== "out"):
1345
arg.setAttribute("name",
1346
"xml_data")
1347
xmlstring = document.toxml("utf-8")
1348
document.unlink()
1349
except (AttributeError, xml.dom.DOMException,
1350
xml.parsers.expat.ExpatError) as error:
1351
logger.error("Failed to override Introspection method",
1352
exc_info=error)
1353
return xmlstring
1354
1355
1356
class DBusObjectWithProperties(DBusObjectWithAnnotations):
615
1357
"""A D-Bus object with properties.
616
1358
617
1359
Classes inheriting from this can use the dbus_service_property
618
1360
decorator to expose methods as D-Bus properties. It exposes the
619
1361
standard Get(), Set(), and GetAll() methods on the D-Bus.
620
1362
"""
621
622
@staticmethod
623
def _is_dbus_property(obj):
624
return getattr(obj, "_dbus_is_property", False)
625
626
def _get_all_dbus_properties(self):
627
"""Returns a generator of (name, attribute) pairs
628
"""
629
return ((prop._dbus_name, prop)
630
for name, prop in
631
inspect.getmembers(self, self._is_dbus_property))
632
1363
633
1364
def _get_dbus_property(self, interface_name, property_name):
634
1365
"""Returns a bound method if one exists which is a D-Bus
635
1366
property with the specified name and interface.
636
1367
"""
637
for name in (property_name,
638
property_name + "_dbus_property"):
639
prop = getattr(self, name, None)
640
if (prop is None
641
or not self._is_dbus_property(prop)
642
or prop._dbus_name != property_name
643
or (interface_name and prop._dbus_interface
644
and interface_name != prop._dbus_interface)):
645
continue
646
return prop
1368
for cls in self.__class__.__mro__:
1369
for name, value in inspect.getmembers(
1370
cls, self._is_dbus_thing("property")):
1371
if (value._dbus_name == property_name
1372
and value._dbus_interface == interface_name):
1373
return value.__get__(self)
1374
647
1375
# No such property
648
raise DBusPropertyNotFound(self.dbus_object_path + ":"
649
+ interface_name + "."
650
+ property_name)
651
652
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1376
raise DBusPropertyNotFound("{}:{}.{}".format(
1377
self.dbus_object_path, interface_name, property_name))
1378
1379
@classmethod
1380
def _get_all_interface_names(cls):
1381
"""Get a sequence of all interfaces supported by an object"""
1382
return (name for name in set(getattr(getattr(x, attr),
1383
"_dbus_interface", None)
1384
for x in (inspect.getmro(cls))
1385
for attr in dir(x))
1386
if name is not None)
1387
1388
@dbus.service.method(dbus.PROPERTIES_IFACE,
1389
in_signature="ss",
653
1390
out_signature="v")
654
1391
def Get(self, interface_name, property_name):
655
1392
"""Standard D-Bus property Get() method, see D-Bus standard.
661
1398
if not hasattr(value, "variant_level"):
662
1399
return value
663
1400
return type(value)(value, variant_level=value.variant_level+1)
664
1401
665
1402
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
666
1403
def Set(self, interface_name, property_name, value):
667
1404
"""Standard D-Bus property Set() method, see D-Bus standard.
673
1410
# The byte_arrays option is not supported yet on
674
1411
# signatures other than "ay".
675
1412
if prop._dbus_signature != "ay":
676
raise ValueError
677
value = dbus.ByteArray(''.join(unichr(byte)
678
for byte in value))
1413
raise ValueError("Byte arrays not supported for non-"
1414
"'ay' signature {!r}"
1415
.format(prop._dbus_signature))
1416
value = dbus.ByteArray(bytes(value))
679
1417
prop(value)
680
681
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1418
1419
@dbus.service.method(dbus.PROPERTIES_IFACE,
1420
in_signature="s",
682
1421
out_signature="a{sv}")
683
1422
def GetAll(self, interface_name):
684
1423
"""Standard D-Bus property GetAll() method, see D-Bus
686
1425
687
1426
Note: Will not include properties with access="write".
688
1427
"""
689
all = {}
690
for name, prop in self._get_all_dbus_properties():
1428
properties = {}
1429
for name, prop in self._get_all_dbus_things("property"):
691
1430
if (interface_name
692
1431
and interface_name != prop._dbus_interface):
693
1432
# Interface non-empty but did not match
697
1436
continue
698
1437
value = prop()
699
1438
if not hasattr(value, "variant_level"):
700
all[name] = value
1439
properties[name] = value
701
1440
continue
702
all[name] = type(value)(value, variant_level=
703
value.variant_level+1)
704
return dbus.Dictionary(all, signature="sv")
705
1441
properties[name] = type(value)(
1442
value, variant_level=value.variant_level + 1)
1443
return dbus.Dictionary(properties, signature="sv")
1444
1445
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1446
def PropertiesChanged(self, interface_name, changed_properties,
1447
invalidated_properties):
1448
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1449
standard.
1450
"""
1451
pass
1452
706
1453
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
707
1454
out_signature="s",
708
1455
path_keyword='object_path',
709
1456
connection_keyword='connection')
710
1457
def Introspect(self, object_path, connection):
711
"""Standard D-Bus method, overloaded to insert property tags.
1458
"""Overloading of standard D-Bus method.
1459
1460
Inserts property tags and interface annotation tags.
712
1461
"""
713
xmlstring = dbus.service.Object.Introspect(self, object_path,
714
connection)
1462
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1463
object_path,
1464
connection)
715
1465
try:
716
1466
document = xml.dom.minidom.parseString(xmlstring)
1467
717
1468
def make_tag(document, name, prop):
718
1469
e = document.createElement("property")
719
1470
e.setAttribute("name", name)
720
1471
e.setAttribute("type", prop._dbus_signature)
721
1472
e.setAttribute("access", prop._dbus_access)
722
1473
return e
1474
723
1475
for if_tag in document.getElementsByTagName("interface"):
1476
# Add property tags
724
1477
for tag in (make_tag(document, name, prop)
725
1478
for name, prop
726
in self._get_all_dbus_properties()
1479
in self._get_all_dbus_things("property")
727
1480
if prop._dbus_interface
728
1481
== if_tag.getAttribute("name")):
729
1482
if_tag.appendChild(tag)
1483
# Add annotation tags for properties
1484
for tag in if_tag.getElementsByTagName("property"):
1485
annots = dict()
1486
for name, prop in self._get_all_dbus_things(
1487
"property"):
1488
if (name == tag.getAttribute("name")
1489
and prop._dbus_interface
1490
== if_tag.getAttribute("name")):
1491
annots.update(getattr(
1492
prop, "_dbus_annotations", {}))
1493
for name, value in annots.items():
1494
ann_tag = document.createElement(
1495
"annotation")
1496
ann_tag.setAttribute("name", name)
1497
ann_tag.setAttribute("value", value)
1498
tag.appendChild(ann_tag)
730
1499
# Add the names to the return values for the
731
1500
# "org.freedesktop.DBus.Properties" methods
732
1501
if (if_tag.getAttribute("name")
747
1516
except (AttributeError, xml.dom.DOMException,
748
1517
xml.parsers.expat.ExpatError) as error:
749
1518
logger.error("Failed to override Introspection method",
750
error)
751
return xmlstring
752
753
1519
exc_info=error)
1520
return xmlstring
1521
1522
1523
try:
1524
dbus.OBJECT_MANAGER_IFACE
1525
except AttributeError:
1526
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1527
1528
1529
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1530
"""A D-Bus object with an ObjectManager.
1531
1532
Classes inheriting from this exposes the standard
1533
GetManagedObjects call and the InterfacesAdded and
1534
InterfacesRemoved signals on the standard
1535
"org.freedesktop.DBus.ObjectManager" interface.
1536
1537
Note: No signals are sent automatically; they must be sent
1538
manually.
1539
"""
1540
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1541
out_signature="a{oa{sa{sv}}}")
1542
def GetManagedObjects(self):
1543
"""This function must be overridden"""
1544
raise NotImplementedError()
1545
1546
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1547
signature="oa{sa{sv}}")
1548
def InterfacesAdded(self, object_path, interfaces_and_properties):
1549
pass
1550
1551
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1552
def InterfacesRemoved(self, object_path, interfaces):
1553
pass
1554
1555
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1556
out_signature="s",
1557
path_keyword='object_path',
1558
connection_keyword='connection')
1559
def Introspect(self, object_path, connection):
1560
"""Overloading of standard D-Bus method.
1561
1562
Override return argument name of GetManagedObjects to be
1563
"objpath_interfaces_and_properties"
1564
"""
1565
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1566
object_path,
1567
connection)
1568
try:
1569
document = xml.dom.minidom.parseString(xmlstring)
1570
1571
for if_tag in document.getElementsByTagName("interface"):
1572
# Fix argument name for the GetManagedObjects method
1573
if (if_tag.getAttribute("name")
1574
== dbus.OBJECT_MANAGER_IFACE):
1575
for cn in if_tag.getElementsByTagName("method"):
1576
if (cn.getAttribute("name")
1577
== "GetManagedObjects"):
1578
for arg in cn.getElementsByTagName("arg"):
1579
if (arg.getAttribute("direction")
1580
== "out"):
1581
arg.setAttribute(
1582
"name",
1583
"objpath_interfaces"
1584
"_and_properties")
1585
xmlstring = document.toxml("utf-8")
1586
document.unlink()
1587
except (AttributeError, xml.dom.DOMException,
1588
xml.parsers.expat.ExpatError) as error:
1589
logger.error("Failed to override Introspection method",
1590
exc_info=error)
1591
return xmlstring
1592
1593
1594
def datetime_to_dbus(dt, variant_level=0):
1595
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1596
if dt is None:
1597
return dbus.String("", variant_level=variant_level)
1598
return dbus.String(dt.isoformat(), variant_level=variant_level)
1599
1600
1601
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1602
"""A class decorator; applied to a subclass of
1603
dbus.service.Object, it will add alternate D-Bus attributes with
1604
interface names according to the "alt_interface_names" mapping.
1605
Usage:
1606
1607
@alternate_dbus_interfaces({"org.example.Interface":
1608
"net.example.AlternateInterface"})
1609
class SampleDBusObject(dbus.service.Object):
1610
@dbus.service.method("org.example.Interface")
1611
def SampleDBusMethod():
1612
pass
1613
1614
The above "SampleDBusMethod" on "SampleDBusObject" will be
1615
reachable via two interfaces: "org.example.Interface" and
1616
"net.example.AlternateInterface", the latter of which will have
1617
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1618
"true", unless "deprecate" is passed with a False value.
1619
1620
This works for methods and signals, and also for D-Bus properties
1621
(from DBusObjectWithProperties) and interfaces (from the
1622
dbus_interface_annotations decorator).
1623
"""
1624
1625
def wrapper(cls):
1626
for orig_interface_name, alt_interface_name in (
1627
alt_interface_names.items()):
1628
attr = {}
1629
interface_names = set()
1630
# Go though all attributes of the class
1631
for attrname, attribute in inspect.getmembers(cls):
1632
# Ignore non-D-Bus attributes, and D-Bus attributes
1633
# with the wrong interface name
1634
if (not hasattr(attribute, "_dbus_interface")
1635
or not attribute._dbus_interface.startswith(
1636
orig_interface_name)):
1637
continue
1638
# Create an alternate D-Bus interface name based on
1639
# the current name
1640
alt_interface = attribute._dbus_interface.replace(
1641
orig_interface_name, alt_interface_name)
1642
interface_names.add(alt_interface)
1643
# Is this a D-Bus signal?
1644
if getattr(attribute, "_dbus_is_signal", False):
1645
# Extract the original non-method undecorated
1646
# function by black magic
1647
if sys.version_info.major == 2:
1648
nonmethod_func = (dict(
1649
zip(attribute.func_code.co_freevars,
1650
attribute.__closure__))
1651
["func"].cell_contents)
1652
else:
1653
nonmethod_func = (dict(
1654
zip(attribute.__code__.co_freevars,
1655
attribute.__closure__))
1656
["func"].cell_contents)
1657
# Create a new, but exactly alike, function
1658
# object, and decorate it to be a new D-Bus signal
1659
# with the alternate D-Bus interface name
1660
new_function = copy_function(nonmethod_func)
1661
new_function = (dbus.service.signal(
1662
alt_interface,
1663
attribute._dbus_signature)(new_function))
1664
# Copy annotations, if any
1665
try:
1666
new_function._dbus_annotations = dict(
1667
attribute._dbus_annotations)
1668
except AttributeError:
1669
pass
1670
1671
# Define a creator of a function to call both the
1672
# original and alternate functions, so both the
1673
# original and alternate signals gets sent when
1674
# the function is called
1675
def fixscope(func1, func2):
1676
"""This function is a scope container to pass
1677
func1 and func2 to the "call_both" function
1678
outside of its arguments"""
1679
1680
@functools.wraps(func2)
1681
def call_both(*args, **kwargs):
1682
"""This function will emit two D-Bus
1683
signals by calling func1 and func2"""
1684
func1(*args, **kwargs)
1685
func2(*args, **kwargs)
1686
# Make wrapper function look like a D-Bus
1687
# signal
1688
for name, attr in inspect.getmembers(func2):
1689
if name.startswith("_dbus_"):
1690
setattr(call_both, name, attr)
1691
1692
return call_both
1693
# Create the "call_both" function and add it to
1694
# the class
1695
attr[attrname] = fixscope(attribute, new_function)
1696
# Is this a D-Bus method?
1697
elif getattr(attribute, "_dbus_is_method", False):
1698
# Create a new, but exactly alike, function
1699
# object. Decorate it to be a new D-Bus method
1700
# with the alternate D-Bus interface name. Add it
1701
# to the class.
1702
attr[attrname] = (
1703
dbus.service.method(
1704
alt_interface,
1705
attribute._dbus_in_signature,
1706
attribute._dbus_out_signature)
1707
(copy_function(attribute)))
1708
# Copy annotations, if any
1709
try:
1710
attr[attrname]._dbus_annotations = dict(
1711
attribute._dbus_annotations)
1712
except AttributeError:
1713
pass
1714
# Is this a D-Bus property?
1715
elif getattr(attribute, "_dbus_is_property", False):
1716
# Create a new, but exactly alike, function
1717
# object, and decorate it to be a new D-Bus
1718
# property with the alternate D-Bus interface
1719
# name. Add it to the class.
1720
attr[attrname] = (dbus_service_property(
1721
alt_interface, attribute._dbus_signature,
1722
attribute._dbus_access,
1723
attribute._dbus_get_args_options
1724
["byte_arrays"])
1725
(copy_function(attribute)))
1726
# Copy annotations, if any
1727
try:
1728
attr[attrname]._dbus_annotations = dict(
1729
attribute._dbus_annotations)
1730
except AttributeError:
1731
pass
1732
# Is this a D-Bus interface?
1733
elif getattr(attribute, "_dbus_is_interface", False):
1734
# Create a new, but exactly alike, function
1735
# object. Decorate it to be a new D-Bus interface
1736
# with the alternate D-Bus interface name. Add it
1737
# to the class.
1738
attr[attrname] = (
1739
dbus_interface_annotations(alt_interface)
1740
(copy_function(attribute)))
1741
if deprecate:
1742
# Deprecate all alternate interfaces
1743
iname = "_AlternateDBusNames_interface_annotation{}"
1744
for interface_name in interface_names:
1745
1746
@dbus_interface_annotations(interface_name)
1747
def func(self):
1748
return {"org.freedesktop.DBus.Deprecated":
1749
"true"}
1750
# Find an unused name
1751
for aname in (iname.format(i)
1752
for i in itertools.count()):
1753
if aname not in attr:
1754
attr[aname] = func
1755
break
1756
if interface_names:
1757
# Replace the class with a new subclass of it with
1758
# methods, signals, etc. as created above.
1759
if sys.version_info.major == 2:
1760
cls = type(b"{}Alternate".format(cls.__name__),
1761
(cls, ), attr)
1762
else:
1763
cls = type("{}Alternate".format(cls.__name__),
1764
(cls, ), attr)
1765
return cls
1766
1767
return wrapper
1768
1769
1770
@alternate_dbus_interfaces({"se.recompile.Mandos":
1771
"se.bsnet.fukt.Mandos"})
754
1772
class ClientDBus(Client, DBusObjectWithProperties):
755
1773
"""A Client class using D-Bus
756
1774
757
1775
Attributes:
758
1776
dbus_object_path: dbus.ObjectPath
759
1777
bus: dbus.SystemBus()
760
1778
"""
761
1779
762
1780
runtime_expansions = (Client.runtime_expansions
763
+ ("dbus_object_path",))
764
1781
+ ("dbus_object_path", ))
1782
1783
_interface = "se.recompile.Mandos.Client"
1784
765
1785
# dbus.service.Object doesn't use super(), so we can't either.
766
767
def __init__(self, bus = None, *args, **kwargs):
768
self._approvals_pending = 0
1786
1787
def __init__(self, bus=None, *args, **kwargs):
769
1788
self.bus = bus
770
1789
Client.__init__(self, *args, **kwargs)
771
1790
# Only now, when this client is initialized, can it show up on
772
1791
# the D-Bus
773
client_object_name = unicode(self.name).translate(
1792
client_object_name = str(self.name).translate(
774
1793
{ord("."): ord("_"),
775
1794
ord("-"): ord("_")})
776
self.dbus_object_path = (dbus.ObjectPath
777
("/clients/" + client_object_name))
1795
self.dbus_object_path = dbus.ObjectPath(
1796
"/clients/" + client_object_name)
778
1797
DBusObjectWithProperties.__init__(self, self.bus,
779
1798
self.dbus_object_path)
780
def _set_expires(self, value):
781
old_value = getattr(self, "_expires", None)
782
self._expires = value
783
if hasattr(self, "dbus_object_path") and old_value != value:
784
dbus_time = (self._datetime_to_dbus(self._expires,
785
variant_level=1))
786
self.PropertyChanged(dbus.String("Expires"),
787
dbus_time)
788
expires = property(lambda self: self._expires, _set_expires)
789
del _set_expires
790
791
def _get_approvals_pending(self):
792
return self._approvals_pending
793
def _set_approvals_pending(self, value):
794
old_value = self._approvals_pending
795
self._approvals_pending = value
796
bval = bool(value)
797
if (hasattr(self, "dbus_object_path")
798
and bval is not bool(old_value)):
799
dbus_bool = dbus.Boolean(bval, variant_level=1)
800
self.PropertyChanged(dbus.String("ApprovalPending"),
801
dbus_bool)
802
803
approvals_pending = property(_get_approvals_pending,
804
_set_approvals_pending)
805
del _get_approvals_pending, _set_approvals_pending
806
807
@staticmethod
808
def _datetime_to_dbus(dt, variant_level=0):
809
"""Convert a UTC datetime.datetime() to a D-Bus type."""
810
if dt is None:
811
return dbus.String("", variant_level = variant_level)
812
return dbus.String(dt.isoformat(),
813
variant_level=variant_level)
814
815
def enable(self):
816
oldstate = getattr(self, "enabled", False)
817
r = Client.enable(self)
818
if oldstate != self.enabled:
819
# Emit D-Bus signals
820
self.PropertyChanged(dbus.String("Enabled"),
821
dbus.Boolean(True, variant_level=1))
822
self.PropertyChanged(
823
dbus.String("LastEnabled"),
824
self._datetime_to_dbus(self.last_enabled,
825
variant_level=1))
826
return r
827
828
def disable(self, quiet = False):
829
oldstate = getattr(self, "enabled", False)
830
r = Client.disable(self, quiet=quiet)
831
if not quiet and oldstate != self.enabled:
832
# Emit D-Bus signal
833
self.PropertyChanged(dbus.String("Enabled"),
834
dbus.Boolean(False, variant_level=1))
835
return r
836
1799
1800
def notifychangeproperty(transform_func, dbus_name,
1801
type_func=lambda x: x,
1802
variant_level=1,
1803
invalidate_only=False,
1804
_interface=_interface):
1805
""" Modify a variable so that it's a property which announces
1806
its changes to DBus.
1807
1808
transform_fun: Function that takes a value and a variant_level
1809
and transforms it to a D-Bus type.
1810
dbus_name: D-Bus name of the variable
1811
type_func: Function that transform the value before sending it
1812
to the D-Bus. Default: no transform
1813
variant_level: D-Bus variant level. Default: 1
1814
"""
1815
attrname = "_{}".format(dbus_name)
1816
1817
def setter(self, value):
1818
if hasattr(self, "dbus_object_path"):
1819
if (not hasattr(self, attrname) or
1820
type_func(getattr(self, attrname, None))
1821
!= type_func(value)):
1822
if invalidate_only:
1823
self.PropertiesChanged(
1824
_interface, dbus.Dictionary(),
1825
dbus.Array((dbus_name, )))
1826
else:
1827
dbus_value = transform_func(
1828
type_func(value),
1829
variant_level=variant_level)
1830
self.PropertyChanged(dbus.String(dbus_name),
1831
dbus_value)
1832
self.PropertiesChanged(
1833
_interface,
1834
dbus.Dictionary({dbus.String(dbus_name):
1835
dbus_value}),
1836
dbus.Array())
1837
setattr(self, attrname, value)
1838
1839
return property(lambda self: getattr(self, attrname), setter)
1840
1841
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1842
approvals_pending = notifychangeproperty(dbus.Boolean,
1843
"ApprovalPending",
1844
type_func=bool)
1845
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1846
last_enabled = notifychangeproperty(datetime_to_dbus,
1847
"LastEnabled")
1848
checker = notifychangeproperty(
1849
dbus.Boolean, "CheckerRunning",
1850
type_func=lambda checker: checker is not None)
1851
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1852
"LastCheckedOK")
1853
last_checker_status = notifychangeproperty(dbus.Int16,
1854
"LastCheckerStatus")
1855
last_approval_request = notifychangeproperty(
1856
datetime_to_dbus, "LastApprovalRequest")
1857
approved_by_default = notifychangeproperty(dbus.Boolean,
1858
"ApprovedByDefault")
1859
approval_delay = notifychangeproperty(
1860
dbus.UInt64, "ApprovalDelay",
1861
type_func=lambda td: td.total_seconds() * 1000)
1862
approval_duration = notifychangeproperty(
1863
dbus.UInt64, "ApprovalDuration",
1864
type_func=lambda td: td.total_seconds() * 1000)
1865
host = notifychangeproperty(dbus.String, "Host")
1866
timeout = notifychangeproperty(
1867
dbus.UInt64, "Timeout",
1868
type_func=lambda td: td.total_seconds() * 1000)
1869
extended_timeout = notifychangeproperty(
1870
dbus.UInt64, "ExtendedTimeout",
1871
type_func=lambda td: td.total_seconds() * 1000)
1872
interval = notifychangeproperty(
1873
dbus.UInt64, "Interval",
1874
type_func=lambda td: td.total_seconds() * 1000)
1875
checker_command = notifychangeproperty(dbus.String, "Checker")
1876
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1877
invalidate_only=True)
1878
1879
del notifychangeproperty
1880
837
1881
def __del__(self, *args, **kwargs):
838
1882
try:
839
1883
self.remove_from_connection()
842
1886
if hasattr(DBusObjectWithProperties, "__del__"):
843
1887
DBusObjectWithProperties.__del__(self, *args, **kwargs)
844
1888
Client.__del__(self, *args, **kwargs)
845
846
def checker_callback(self, pid, condition, command,
847
*args, **kwargs):
848
self.checker_callback_tag = None
849
self.checker = None
850
# Emit D-Bus signal
851
self.PropertyChanged(dbus.String("CheckerRunning"),
852
dbus.Boolean(False, variant_level=1))
853
if os.WIFEXITED(condition):
854
exitstatus = os.WEXITSTATUS(condition)
1889
1890
def checker_callback(self, source, condition,
1891
connection, command, *args, **kwargs):
1892
ret = Client.checker_callback(self, source, condition,
1893
connection, command, *args,
1894
**kwargs)
1895
exitstatus = self.last_checker_status
1896
if exitstatus >= 0:
855
1897
# Emit D-Bus signal
856
1898
self.CheckerCompleted(dbus.Int16(exitstatus),
857
dbus.Int64(condition),
1899
# This is specific to GNU libC
1900
dbus.Int64(exitstatus << 8),
858
1901
dbus.String(command))
859
1902
else:
860
1903
# Emit D-Bus signal
861
1904
self.CheckerCompleted(dbus.Int16(-1),
862
dbus.Int64(condition),
1905
dbus.Int64(
1906
# This is specific to GNU libC
1907
(exitstatus << 8)
1908
| self.last_checker_signal),
863
1909
dbus.String(command))
864
865
return Client.checker_callback(self, pid, condition, command,
866
*args, **kwargs)
867
868
def checked_ok(self, *args, **kwargs):
869
Client.checked_ok(self, *args, **kwargs)
870
# Emit D-Bus signal
871
self.PropertyChanged(
872
dbus.String("LastCheckedOK"),
873
(self._datetime_to_dbus(self.last_checked_ok,
874
variant_level=1)))
875
876
def need_approval(self, *args, **kwargs):
877
r = Client.need_approval(self, *args, **kwargs)
878
# Emit D-Bus signal
879
self.PropertyChanged(
880
dbus.String("LastApprovalRequest"),
881
(self._datetime_to_dbus(self.last_approval_request,
882
variant_level=1)))
883
return r
884
1910
return ret
1911
885
1912
def start_checker(self, *args, **kwargs):
886
old_checker = self.checker
887
if self.checker is not None:
888
old_checker_pid = self.checker.pid
889
else:
890
old_checker_pid = None
1913
old_checker_pid = getattr(self.checker, "pid", None)
891
1914
r = Client.start_checker(self, *args, **kwargs)
892
1915
# Only if new checker process was started
893
1916
if (self.checker is not None
894
1917
and old_checker_pid != self.checker.pid):
895
1918
# Emit D-Bus signal
896
1919
self.CheckerStarted(self.current_checker_command)
897
self.PropertyChanged(
898
dbus.String("CheckerRunning"),
899
dbus.Boolean(True, variant_level=1))
900
return r
901
902
def stop_checker(self, *args, **kwargs):
903
old_checker = getattr(self, "checker", None)
904
r = Client.stop_checker(self, *args, **kwargs)
905
if (old_checker is not None
906
and getattr(self, "checker", None) is None):
907
self.PropertyChanged(dbus.String("CheckerRunning"),
908
dbus.Boolean(False, variant_level=1))
909
1920
return r
910
1921
911
1922
def _reset_approved(self):
912
self._approved = None
1923
self.approved = None
913
1924
return False
914
1925
915
1926
def approve(self, value=True):
1927
self.approved = value
1928
GLib.timeout_add(int(self.approval_duration.total_seconds()
1929
* 1000), self._reset_approved)
916
1930
self.send_changedstate()
917
self._approved = value
918
gobject.timeout_add(self._timedelta_to_milliseconds
919
(self.approval_duration),
920
self._reset_approved)
921
922
923
## D-Bus methods, signals & properties
924
_interface = "se.bsnet.fukt.Mandos.Client"
925
926
## Signals
927
1931
1932
# D-Bus methods, signals & properties
1933
1934
# Interfaces
1935
1936
# Signals
1937
928
1938
# CheckerCompleted - signal
929
1939
@dbus.service.signal(_interface, signature="nxs")
930
1940
def CheckerCompleted(self, exitcode, waitstatus, command):
931
1941
"D-Bus signal"
932
1942
pass
933
1943
934
1944
# CheckerStarted - signal
935
1945
@dbus.service.signal(_interface, signature="s")
936
1946
def CheckerStarted(self, command):
937
1947
"D-Bus signal"
938
1948
pass
939
1949
940
1950
# PropertyChanged - signal
1951
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
941
1952
@dbus.service.signal(_interface, signature="sv")
942
1953
def PropertyChanged(self, property, value):
943
1954
"D-Bus signal"
944
1955
pass
945
1956
946
1957
# GotSecret - signal
947
1958
@dbus.service.signal(_interface)
948
1959
def GotSecret(self):
951
1962
server to mandos-client
952
1963
"""
953
1964
pass
954
1965
955
1966
# Rejected - signal
956
1967
@dbus.service.signal(_interface, signature="s")
957
1968
def Rejected(self, reason):
958
1969
"D-Bus signal"
959
1970
pass
960
1971
961
1972
# NeedApproval - signal
962
1973
@dbus.service.signal(_interface, signature="tb")
963
1974
def NeedApproval(self, timeout, default):
964
1975
"D-Bus signal"
965
1976
return self.need_approval()
966
967
## Methods
968
1977
1978
# Methods
1979
969
1980
# Approve - method
970
1981
@dbus.service.method(_interface, in_signature="b")
971
1982
def Approve(self, value):
972
1983
self.approve(value)
973
1984
974
1985
# CheckedOK - method
975
1986
@dbus.service.method(_interface)
976
1987
def CheckedOK(self):
977
1988
self.checked_ok()
978
1989
979
1990
# Enable - method
1991
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
980
1992
@dbus.service.method(_interface)
981
1993
def Enable(self):
982
1994
"D-Bus method"
983
1995
self.enable()
984
1996
985
1997
# StartChecker - method
1998
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
986
1999
@dbus.service.method(_interface)
987
2000
def StartChecker(self):
988
2001
"D-Bus method"
989
2002
self.start_checker()
990
2003
991
2004
# Disable - method
2005
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
992
2006
@dbus.service.method(_interface)
993
2007
def Disable(self):
994
2008
"D-Bus method"
995
2009
self.disable()
996
2010
997
2011
# StopChecker - method
2012
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
998
2013
@dbus.service.method(_interface)
999
2014
def StopChecker(self):
1000
2015
self.stop_checker()
1001
1002
## Properties
1003
2016
2017
# Properties
2018
1004
2019
# ApprovalPending - property
1005
2020
@dbus_service_property(_interface, signature="b", access="read")
1006
2021
def ApprovalPending_dbus_property(self):
1007
2022
return dbus.Boolean(bool(self.approvals_pending))
1008
2023
1009
2024
# ApprovedByDefault - property
1010
@dbus_service_property(_interface, signature="b",
2025
@dbus_service_property(_interface,
2026
signature="b",
1011
2027
access="readwrite")
1012
2028
def ApprovedByDefault_dbus_property(self, value=None):
1013
2029
if value is None: # get
1014
2030
return dbus.Boolean(self.approved_by_default)
1015
old_value = self.approved_by_default
1016
2031
self.approved_by_default = bool(value)
1017
# Emit D-Bus signal
1018
if old_value != self.approved_by_default:
1019
self.PropertyChanged(dbus.String("ApprovedByDefault"),
1020
dbus.Boolean(value, variant_level=1))
1021
2032
1022
2033
# ApprovalDelay - property
1023
@dbus_service_property(_interface, signature="t",
2034
@dbus_service_property(_interface,
2035
signature="t",
1024
2036
access="readwrite")
1025
2037
def ApprovalDelay_dbus_property(self, value=None):
1026
2038
if value is None: # get
1027
return dbus.UInt64(self.approval_delay_milliseconds())
1028
old_value = self.approval_delay
2039
return dbus.UInt64(self.approval_delay.total_seconds()
2040
* 1000)
1029
2041
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1030
# Emit D-Bus signal
1031
if old_value != self.approval_delay:
1032
self.PropertyChanged(dbus.String("ApprovalDelay"),
1033
dbus.UInt64(value, variant_level=1))
1034
2042
1035
2043
# ApprovalDuration - property
1036
@dbus_service_property(_interface, signature="t",
2044
@dbus_service_property(_interface,
2045
signature="t",
1037
2046
access="readwrite")
1038
2047
def ApprovalDuration_dbus_property(self, value=None):
1039
2048
if value is None: # get
1040
return dbus.UInt64(self._timedelta_to_milliseconds(
1041
self.approval_duration))
1042
old_value = self.approval_duration
2049
return dbus.UInt64(self.approval_duration.total_seconds()
2050
* 1000)
1043
2051
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1044
# Emit D-Bus signal
1045
if old_value != self.approval_duration:
1046
self.PropertyChanged(dbus.String("ApprovalDuration"),
1047
dbus.UInt64(value, variant_level=1))
1048
2052
1049
2053
# Name - property
2054
@dbus_annotations(
2055
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1050
2056
@dbus_service_property(_interface, signature="s", access="read")
1051
2057
def Name_dbus_property(self):
1052
2058
return dbus.String(self.name)
1053
2059
2060
# KeyID - property
2061
@dbus_annotations(
2062
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2063
@dbus_service_property(_interface, signature="s", access="read")
2064
def KeyID_dbus_property(self):
2065
return dbus.String(self.key_id)
2066
1054
2067
# Fingerprint - property
2068
@dbus_annotations(
2069
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1055
2070
@dbus_service_property(_interface, signature="s", access="read")
1056
2071
def Fingerprint_dbus_property(self):
1057
2072
return dbus.String(self.fingerprint)
1058
2073
1059
2074
# Host - property
1060
@dbus_service_property(_interface, signature="s",
2075
@dbus_service_property(_interface,
2076
signature="s",
1061
2077
access="readwrite")
1062
2078
def Host_dbus_property(self, value=None):
1063
2079
if value is None: # get
1064
2080
return dbus.String(self.host)
1065
old_value = self.host
1066
self.host = value
1067
# Emit D-Bus signal
1068
if old_value != self.host:
1069
self.PropertyChanged(dbus.String("Host"),
1070
dbus.String(value, variant_level=1))
1071
2081
self.host = str(value)
2082
1072
2083
# Created - property
2084
@dbus_annotations(
2085
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1073
2086
@dbus_service_property(_interface, signature="s", access="read")
1074
2087
def Created_dbus_property(self):
1075
return dbus.String(self._datetime_to_dbus(self.created))
1076
2088
return datetime_to_dbus(self.created)
2089
1077
2090
# LastEnabled - property
1078
2091
@dbus_service_property(_interface, signature="s", access="read")
1079
2092
def LastEnabled_dbus_property(self):
1080
return self._datetime_to_dbus(self.last_enabled)
1081
2093
return datetime_to_dbus(self.last_enabled)
2094
1082
2095
# Enabled - property
1083
@dbus_service_property(_interface, signature="b",
2096
@dbus_service_property(_interface,
2097
signature="b",
1084
2098
access="readwrite")
1085
2099
def Enabled_dbus_property(self, value=None):
1086
2100
if value is None: # get
1089
2103
self.enable()
1090
2104
else:
1091
2105
self.disable()
1092
2106
1093
2107
# LastCheckedOK - property
1094
@dbus_service_property(_interface, signature="s",
2108
@dbus_service_property(_interface,
2109
signature="s",
1095
2110
access="readwrite")
1096
2111
def LastCheckedOK_dbus_property(self, value=None):
1097
2112
if value is not None:
1098
2113
self.checked_ok()
1099
2114
return
1100
return self._datetime_to_dbus(self.last_checked_ok)
1101
2115
return datetime_to_dbus(self.last_checked_ok)
2116
2117
# LastCheckerStatus - property
2118
@dbus_service_property(_interface, signature="n", access="read")
2119
def LastCheckerStatus_dbus_property(self):
2120
return dbus.Int16(self.last_checker_status)
2121
1102
2122
# Expires - property
1103
2123
@dbus_service_property(_interface, signature="s", access="read")
1104
2124
def Expires_dbus_property(self):
1105
return self._datetime_to_dbus(self.expires)
1106
2125
return datetime_to_dbus(self.expires)
2126
1107
2127
# LastApprovalRequest - property
1108
2128
@dbus_service_property(_interface, signature="s", access="read")
1109
2129
def LastApprovalRequest_dbus_property(self):
1110
return self._datetime_to_dbus(self.last_approval_request)
1111
2130
return datetime_to_dbus(self.last_approval_request)
2131
1112
2132
# Timeout - property
1113
@dbus_service_property(_interface, signature="t",
2133
@dbus_service_property(_interface,
2134
signature="t",
1114
2135
access="readwrite")
1115
2136
def Timeout_dbus_property(self, value=None):
1116
2137
if value is None: # get
1117
return dbus.UInt64(self.timeout_milliseconds())
1118
old_value = self.timeout
2138
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2139
old_timeout = self.timeout
1119
2140
self.timeout = datetime.timedelta(0, 0, 0, value)
1120
# Emit D-Bus signal
1121
if old_value != self.timeout:
1122
self.PropertyChanged(dbus.String("Timeout"),
1123
dbus.UInt64(value, variant_level=1))
1124
if getattr(self, "disable_initiator_tag", None) is None:
1125
return
1126
# Reschedule timeout
1127
gobject.source_remove(self.disable_initiator_tag)
1128
self.disable_initiator_tag = None
1129
self.expires = None
1130
time_to_die = (self.
1131
_timedelta_to_milliseconds((self
1132
.last_checked_ok
1133
+ self.timeout)
1134
- datetime.datetime
1135
.utcnow()))
1136
if time_to_die <= 0:
1137
# The timeout has passed
1138
self.disable()
1139
else:
1140
self.expires = (datetime.datetime.utcnow()
1141
+ datetime.timedelta(milliseconds = time_to_die))
1142
self.disable_initiator_tag = (gobject.timeout_add
1143
(time_to_die, self.disable))
2141
# Reschedule disabling
2142
if self.enabled:
2143
now = datetime.datetime.utcnow()
2144
self.expires += self.timeout - old_timeout
2145
if self.expires <= now:
2146
# The timeout has passed
2147
self.disable()
2148
else:
2149
if (getattr(self, "disable_initiator_tag", None)
2150
is None):
2151
return
2152
GLib.source_remove(self.disable_initiator_tag)
2153
self.disable_initiator_tag = GLib.timeout_add(
2154
int((self.expires - now).total_seconds() * 1000),
2155
self.disable)
1144
2156
1145
2157
# ExtendedTimeout - property
1146
@dbus_service_property(_interface, signature="t",
2158
@dbus_service_property(_interface,
2159
signature="t",
1147
2160
access="readwrite")
1148
2161
def ExtendedTimeout_dbus_property(self, value=None):
1149
2162
if value is None: # get
1150
return dbus.UInt64(self.extended_timeout_milliseconds())
1151
old_value = self.extended_timeout
2163
return dbus.UInt64(self.extended_timeout.total_seconds()
2164
* 1000)
1152
2165
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1153
# Emit D-Bus signal
1154
if old_value != self.extended_timeout:
1155
self.PropertyChanged(dbus.String("ExtendedTimeout"),
1156
dbus.UInt64(value, variant_level=1))
1157
2166
1158
2167
# Interval - property
1159
@dbus_service_property(_interface, signature="t",
2168
@dbus_service_property(_interface,
2169
signature="t",
1160
2170
access="readwrite")
1161
2171
def Interval_dbus_property(self, value=None):
1162
2172
if value is None: # get
1163
return dbus.UInt64(self.interval_milliseconds())
1164
old_value = self.interval
2173
return dbus.UInt64(self.interval.total_seconds() * 1000)
1165
2174
self.interval = datetime.timedelta(0, 0, 0, value)
1166
# Emit D-Bus signal
1167
if old_value != self.interval:
1168
self.PropertyChanged(dbus.String("Interval"),
1169
dbus.UInt64(value, variant_level=1))
1170
2175
if getattr(self, "checker_initiator_tag", None) is None:
1171
2176
return
1172
# Reschedule checker run
1173
gobject.source_remove(self.checker_initiator_tag)
1174
self.checker_initiator_tag = (gobject.timeout_add
1175
(value, self.start_checker))
1176
self.start_checker() # Start one now, too
2177
if self.enabled:
2178
# Reschedule checker run
2179
GLib.source_remove(self.checker_initiator_tag)
2180
self.checker_initiator_tag = GLib.timeout_add(
2181
value, self.start_checker)
2182
self.start_checker() # Start one now, too
1177
2183
1178
2184
# Checker - property
1179
@dbus_service_property(_interface, signature="s",
2185
@dbus_service_property(_interface,
2186
signature="s",
1180
2187
access="readwrite")
1181
2188
def Checker_dbus_property(self, value=None):
1182
2189
if value is None: # get
1183
2190
return dbus.String(self.checker_command)
1184
old_value = self.checker_command
1185
self.checker_command = value
1186
# Emit D-Bus signal
1187
if old_value != self.checker_command:
1188
self.PropertyChanged(dbus.String("Checker"),
1189
dbus.String(self.checker_command,
1190
variant_level=1))
1191
2191
self.checker_command = str(value)
2192
1192
2193
# CheckerRunning - property
1193
@dbus_service_property(_interface, signature="b",
2194
@dbus_service_property(_interface,
2195
signature="b",
1194
2196
access="readwrite")
1195
2197
def CheckerRunning_dbus_property(self, value=None):
1196
2198
if value is None: # get
1199
2201
self.start_checker()
1200
2202
else:
1201
2203
self.stop_checker()
1202
2204
1203
2205
# ObjectPath - property
2206
@dbus_annotations(
2207
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2208
"org.freedesktop.DBus.Deprecated": "true"})
1204
2209
@dbus_service_property(_interface, signature="o", access="read")
1205
2210
def ObjectPath_dbus_property(self):
1206
return self.dbus_object_path # is already a dbus.ObjectPath
1207
2211
return self.dbus_object_path # is already a dbus.ObjectPath
2212
1208
2213
# Secret = property
1209
@dbus_service_property(_interface, signature="ay",
1210
access="write", byte_arrays=True)
2214
@dbus_annotations(
2215
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2216
"invalidates"})
2217
@dbus_service_property(_interface,
2218
signature="ay",
2219
access="write",
2220
byte_arrays=True)
1211
2221
def Secret_dbus_property(self, value):
1212
self.secret = str(value)
1213
2222
self.secret = bytes(value)
2223
1214
2224
del _interface
1215
2225
1216
2226
1217
class ProxyClient(object):
1218
def __init__(self, child_pipe, fpr, address):
2227
class ProxyClient:
2228
def __init__(self, child_pipe, key_id, fpr, address):
1219
2229
self._pipe = child_pipe
1220
self._pipe.send(('init', fpr, address))
2230
self._pipe.send(('init', key_id, fpr, address))
1221
2231
if not self._pipe.recv():
1222
raise KeyError()
2232
raise KeyError(key_id or fpr)
1223
2233
1224
2234
def __getattribute__(self, name):
1225
if(name == '_pipe'):
2235
if name == '_pipe':
1226
2236
return super(ProxyClient, self).__getattribute__(name)
1227
2237
self._pipe.send(('getattr', name))
1228
2238
data = self._pipe.recv()
1229
2239
if data[0] == 'data':
1230
2240
return data[1]
1231
2241
if data[0] == 'function':
2242
1232
2243
def func(*args, **kwargs):
1233
2244
self._pipe.send(('funcall', name, args, kwargs))
1234
2245
return self._pipe.recv()[1]
2246
1235
2247
return func
1236
2248
1237
2249
def __setattr__(self, name, value):
1238
if(name == '_pipe'):
2250
if name == '_pipe':
1239
2251
return super(ProxyClient, self).__setattr__(name, value)
1240
2252
self._pipe.send(('setattr', name, value))
1241
2253
1242
2254
1243
2255
class ClientHandler(socketserver.BaseRequestHandler, object):
1244
2256
"""A class to handle client connections.
1245
2257
1246
2258
Instantiated once for each connection to handle it.
1247
2259
Note: This will run in its own forked process."""
1248
2260
1249
2261
def handle(self):
1250
2262
with contextlib.closing(self.server.child_pipe) as child_pipe:
1251
2263
logger.info("TCP connection from: %s",
1252
unicode(self.client_address))
2264
str(self.client_address))
1253
2265
logger.debug("Pipe FD: %d",
1254
2266
self.server.child_pipe.fileno())
1255
2267
1256
session = (gnutls.connection
1257
.ClientSession(self.request,
1258
gnutls.connection
1259
.X509Credentials()))
1260
1261
# Note: gnutls.connection.X509Credentials is really a
1262
# generic GnuTLS certificate credentials object so long as
1263
# no X.509 keys are added to it. Therefore, we can use it
1264
# here despite using OpenPGP certificates.
1265
1266
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1267
# "+AES-256-CBC", "+SHA1",
1268
# "+COMP-NULL", "+CTYPE-OPENPGP",
1269
# "+DHE-DSS"))
2268
session = gnutls.ClientSession(self.request)
2269
2270
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2271
# "+AES-256-CBC", "+SHA1",
2272
# "+COMP-NULL", "+CTYPE-OPENPGP",
2273
# "+DHE-DSS"))
1270
2274
# Use a fallback default, since this MUST be set.
1271
2275
priority = self.server.gnutls_priority
1272
2276
if priority is None:
1273
2277
priority = "NORMAL"
1274
(gnutls.library.functions
1275
.gnutls_priority_set_direct(session._c_object,
1276
priority, None))
2278
gnutls.priority_set_direct(session._c_object,
2279
priority.encode("utf-8"),
2280
None)
1277
2281
1278
2282
# Start communication using the Mandos protocol
1279
2283
# Get protocol number
1281
2285
logger.debug("Protocol version: %r", line)
1282
2286
try:
1283
2287
if int(line.strip().split()[0]) > 1:
1284
raise RuntimeError
2288
raise RuntimeError(line)
1285
2289
except (ValueError, IndexError, RuntimeError) as error:
1286
2290
logger.error("Unknown protocol version: %s", error)
1287
2291
return
1289
2293
# Start GnuTLS connection
1290
2294
try:
1291
2295
session.handshake()
1292
except gnutls.errors.GNUTLSError as error:
2296
except gnutls.Error as error:
1293
2297
logger.warning("Handshake failed: %s", error)
1294
2298
# Do not run session.bye() here: the session is not
1295
2299
# established. Just abandon the request.
1298
2302
1299
2303
approval_required = False
1300
2304
try:
1301
try:
1302
fpr = self.fingerprint(self.peer_certificate
1303
(session))
1304
except (TypeError,
1305
gnutls.errors.GNUTLSError) as error:
1306
logger.warning("Bad certificate: %s", error)
1307
return
1308
logger.debug("Fingerprint: %s", fpr)
1309
1310
try:
1311
client = ProxyClient(child_pipe, fpr,
2305
if gnutls.has_rawpk:
2306
fpr = b""
2307
try:
2308
key_id = self.key_id(
2309
self.peer_certificate(session))
2310
except (TypeError, gnutls.Error) as error:
2311
logger.warning("Bad certificate: %s", error)
2312
return
2313
logger.debug("Key ID: %s", key_id)
2314
2315
else:
2316
key_id = b""
2317
try:
2318
fpr = self.fingerprint(
2319
self.peer_certificate(session))
2320
except (TypeError, gnutls.Error) as error:
2321
logger.warning("Bad certificate: %s", error)
2322
return
2323
logger.debug("Fingerprint: %s", fpr)
2324
2325
try:
2326
client = ProxyClient(child_pipe, key_id, fpr,
1312
2327
self.client_address)
1313
2328
except KeyError:
1314
2329
return
1315
2330
1316
2331
if client.approval_delay:
1317
2332
delay = client.approval_delay
1318
2333
client.approvals_pending += 1
1319
2334
approval_required = True
1320
2335
1321
2336
while True:
1322
2337
if not client.enabled:
1323
2338
logger.info("Client %s is disabled",
1324
client.name)
2339
client.name)
1325
2340
if self.server.use_dbus:
1326
2341
# Emit D-Bus signal
1327
client.Rejected("Disabled")
2342
client.Rejected("Disabled")
1328
2343
return
1329
1330
if client._approved or not client.approval_delay:
1331
#We are approved or approval is disabled
2344
2345
if client.approved or not client.approval_delay:
2346
# We are approved or approval is disabled
1332
2347
break
1333
elif client._approved is None:
2348
elif client.approved is None:
1334
2349
logger.info("Client %s needs approval",
1335
2350
client.name)
1336
2351
if self.server.use_dbus:
1337
2352
# Emit D-Bus signal
1338
2353
client.NeedApproval(
1339
client.approval_delay_milliseconds(),
1340
client.approved_by_default)
2354
client.approval_delay.total_seconds()
2355
* 1000, client.approved_by_default)
1341
2356
else:
1342
2357
logger.warning("Client %s was not approved",
1343
2358
client.name)
1345
2360
# Emit D-Bus signal
1346
2361
client.Rejected("Denied")
1347
2362
return
1348
1349
#wait until timeout or approved
1350
#x = float(client._timedelta_to_milliseconds(delay))
2363
2364
# wait until timeout or approved
1351
2365
time = datetime.datetime.now()
1352
2366
client.changedstate.acquire()
1353
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2367
client.changedstate.wait(delay.total_seconds())
1354
2368
client.changedstate.release()
1355
2369
time2 = datetime.datetime.now()
1356
2370
if (time2 - time) >= delay:
1366
2380
break
1367
2381
else:
1368
2382
delay -= time2 - time
1369
1370
sent_size = 0
1371
while sent_size < len(client.secret):
1372
try:
1373
sent = session.send(client.secret[sent_size:])
1374
except gnutls.errors.GNUTLSError as error:
1375
logger.warning("gnutls send failed")
1376
return
1377
logger.debug("Sent: %d, remaining: %d",
1378
sent, len(client.secret)
1379
- (sent_size + sent))
1380
sent_size += sent
2383
2384
try:
2385
session.send(client.secret)
2386
except gnutls.Error as error:
2387
logger.warning("gnutls send failed",
2388
exc_info=error)
2389
return
1381
2390
1382
2391
logger.info("Sending secret to %s", client.name)
1383
# bump the timeout as if seen
1384
client.checked_ok(client.extended_timeout)
2392
# bump the timeout using extended_timeout
2393
client.bump_timeout(client.extended_timeout)
1385
2394
if self.server.use_dbus:
1386
2395
# Emit D-Bus signal
1387
2396
client.GotSecret()
1388
2397
1389
2398
finally:
1390
2399
if approval_required:
1391
2400
client.approvals_pending -= 1
1392
2401
try:
1393
2402
session.bye()
1394
except gnutls.errors.GNUTLSError as error:
1395
logger.warning("GnuTLS bye failed")
1396
2403
except gnutls.Error as error:
2404
logger.warning("GnuTLS bye failed",
2405
exc_info=error)
2406
1397
2407
@staticmethod
1398
2408
def peer_certificate(session):
1399
"Return the peer's OpenPGP certificate as a bytestring"
1400
# If not an OpenPGP certificate...
1401
if (gnutls.library.functions
1402
.gnutls_certificate_type_get(session._c_object)
1403
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1404
# ...do the normal thing
1405
return session.peer_certificate
2409
"Return the peer's certificate as a bytestring"
2410
try:
2411
cert_type = gnutls.certificate_type_get2(session._c_object,
2412
gnutls.CTYPE_PEERS)
2413
except AttributeError:
2414
cert_type = gnutls.certificate_type_get(session._c_object)
2415
if gnutls.has_rawpk:
2416
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2417
else:
2418
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2419
# If not a valid certificate type...
2420
if cert_type not in valid_cert_types:
2421
logger.info("Cert type %r not in %r", cert_type,
2422
valid_cert_types)
2423
# ...return invalid data
2424
return b""
1406
2425
list_size = ctypes.c_uint(1)
1407
cert_list = (gnutls.library.functions
1408
.gnutls_certificate_get_peers
2426
cert_list = (gnutls.certificate_get_peers
1409
2427
(session._c_object, ctypes.byref(list_size)))
1410
2428
if not bool(cert_list) and list_size.value != 0:
1411
raise gnutls.errors.GNUTLSError("error getting peer"
1412
" certificate")
2429
raise gnutls.Error("error getting peer certificate")
1413
2430
if list_size.value == 0:
1414
2431
return None
1415
2432
cert = cert_list[0]
1416
2433
return ctypes.string_at(cert.data, cert.size)
1417
2434
2435
@staticmethod
2436
def key_id(certificate):
2437
"Convert a certificate bytestring to a hexdigit key ID"
2438
# New GnuTLS "datum" with the public key
2439
datum = gnutls.datum_t(
2440
ctypes.cast(ctypes.c_char_p(certificate),
2441
ctypes.POINTER(ctypes.c_ubyte)),
2442
ctypes.c_uint(len(certificate)))
2443
# XXX all these need to be created in the gnutls "module"
2444
# New empty GnuTLS certificate
2445
pubkey = gnutls.pubkey_t()
2446
gnutls.pubkey_init(ctypes.byref(pubkey))
2447
# Import the raw public key into the certificate
2448
gnutls.pubkey_import(pubkey,
2449
ctypes.byref(datum),
2450
gnutls.X509_FMT_DER)
2451
# New buffer for the key ID
2452
buf = ctypes.create_string_buffer(32)
2453
buf_len = ctypes.c_size_t(len(buf))
2454
# Get the key ID from the raw public key into the buffer
2455
gnutls.pubkey_get_key_id(pubkey,
2456
gnutls.KEYID_USE_SHA256,
2457
ctypes.cast(ctypes.byref(buf),
2458
ctypes.POINTER(ctypes.c_ubyte)),
2459
ctypes.byref(buf_len))
2460
# Deinit the certificate
2461
gnutls.pubkey_deinit(pubkey)
2462
2463
# Convert the buffer to a Python bytestring
2464
key_id = ctypes.string_at(buf, buf_len.value)
2465
# Convert the bytestring to hexadecimal notation
2466
hex_key_id = binascii.hexlify(key_id).upper()
2467
return hex_key_id
2468
1418
2469
@staticmethod
1419
2470
def fingerprint(openpgp):
1420
2471
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1421
2472
# New GnuTLS "datum" with the OpenPGP public key
1422
datum = (gnutls.library.types
1423
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1424
ctypes.POINTER
1425
(ctypes.c_ubyte)),
1426
ctypes.c_uint(len(openpgp))))
2473
datum = gnutls.datum_t(
2474
ctypes.cast(ctypes.c_char_p(openpgp),
2475
ctypes.POINTER(ctypes.c_ubyte)),
2476
ctypes.c_uint(len(openpgp)))
1427
2477
# New empty GnuTLS certificate
1428
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1429
(gnutls.library.functions
1430
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2478
crt = gnutls.openpgp_crt_t()
2479
gnutls.openpgp_crt_init(ctypes.byref(crt))
1431
2480
# Import the OpenPGP public key into the certificate
1432
(gnutls.library.functions
1433
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1434
gnutls.library.constants
1435
.GNUTLS_OPENPGP_FMT_RAW))
2481
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2482
gnutls.OPENPGP_FMT_RAW)
1436
2483
# Verify the self signature in the key
1437
2484
crtverify = ctypes.c_uint()
1438
(gnutls.library.functions
1439
.gnutls_openpgp_crt_verify_self(crt, 0,
1440
ctypes.byref(crtverify)))
2485
gnutls.openpgp_crt_verify_self(crt, 0,
2486
ctypes.byref(crtverify))
1441
2487
if crtverify.value != 0:
1442
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1443
raise (gnutls.errors.CertificateSecurityError
1444
("Verify failed"))
2488
gnutls.openpgp_crt_deinit(crt)
2489
raise gnutls.CertificateSecurityError(code
2490
=crtverify.value)
1445
2491
# New buffer for the fingerprint
1446
2492
buf = ctypes.create_string_buffer(20)
1447
2493
buf_len = ctypes.c_size_t()
1448
2494
# Get the fingerprint from the certificate into the buffer
1449
(gnutls.library.functions
1450
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1451
ctypes.byref(buf_len)))
2495
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2496
ctypes.byref(buf_len))
1452
2497
# Deinit the certificate
1453
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2498
gnutls.openpgp_crt_deinit(crt)
1454
2499
# Convert the buffer to a Python bytestring
1455
2500
fpr = ctypes.string_at(buf, buf_len.value)
1456
2501
# Convert the bytestring to hexadecimal notation
1457
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2502
hex_fpr = binascii.hexlify(fpr).upper()
1458
2503
return hex_fpr
1459
2504
1460
2505
1461
class MultiprocessingMixIn(object):
2506
class MultiprocessingMixIn:
1462
2507
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2508
1463
2509
def sub_process_main(self, request, address):
1464
2510
try:
1465
2511
self.finish_request(request, address)
1466
except:
2512
except Exception:
1467
2513
self.handle_error(request, address)
1468
2514
self.close_request(request)
1469
2515
1470
2516
def process_request(self, request, address):
1471
2517
"""Start a new process to process the request."""
1472
multiprocessing.Process(target = self.sub_process_main,
1473
args = (request, address)).start()
1474
1475
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2518
proc = multiprocessing.Process(target=self.sub_process_main,
2519
args=(request, address))
2520
proc.start()
2521
return proc
2522
2523
2524
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1476
2525
""" adds a pipe to the MixIn """
2526
1477
2527
def process_request(self, request, client_address):
1478
2528
"""Overrides and wraps the original process_request().
1479
2529
1480
2530
This function creates a new pipe in self.pipe
1481
2531
"""
1482
2532
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1483
2533
1484
super(MultiprocessingMixInWithPipe,
1485
self).process_request(request, client_address)
2534
proc = MultiprocessingMixIn.process_request(self, request,
2535
client_address)
1486
2536
self.child_pipe.close()
1487
self.add_pipe(parent_pipe)
2537
self.add_pipe(parent_pipe, proc)
1488
2538
1489
def add_pipe(self, parent_pipe):
2539
def add_pipe(self, parent_pipe, proc):
1490
2540
"""Dummy function; override as necessary"""
1491
raise NotImplementedError
2541
raise NotImplementedError()
2542
1492
2543
1493
2544
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1494
socketserver.TCPServer, object):
2545
socketserver.TCPServer):
1495
2546
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1496
2547
1497
2548
Attributes:
1498
2549
enabled: Boolean; whether this server is activated yet
1499
2550
interface: None or a network interface name (string)
1500
2551
use_ipv6: Boolean; to use IPv6 or not
1501
2552
"""
2553
1502
2554
def __init__(self, server_address, RequestHandlerClass,
1503
interface=None, use_ipv6=True):
2555
interface=None,
2556
use_ipv6=True,
2557
socketfd=None):
2558
"""If socketfd is set, use that file descriptor instead of
2559
creating a new one with socket.socket().
2560
"""
1504
2561
self.interface = interface
1505
2562
if use_ipv6:
1506
2563
self.address_family = socket.AF_INET6
2564
if socketfd is not None:
2565
# Save the file descriptor
2566
self.socketfd = socketfd
2567
# Save the original socket.socket() function
2568
self.socket_socket = socket.socket
2569
2570
# To implement --socket, we monkey patch socket.socket.
2571
#
2572
# (When socketserver.TCPServer is a new-style class, we
2573
# could make self.socket into a property instead of monkey
2574
# patching socket.socket.)
2575
#
2576
# Create a one-time-only replacement for socket.socket()
2577
@functools.wraps(socket.socket)
2578
def socket_wrapper(*args, **kwargs):
2579
# Restore original function so subsequent calls are
2580
# not affected.
2581
socket.socket = self.socket_socket
2582
del self.socket_socket
2583
# This time only, return a new socket object from the
2584
# saved file descriptor.
2585
return socket.fromfd(self.socketfd, *args, **kwargs)
2586
# Replace socket.socket() function with wrapper
2587
socket.socket = socket_wrapper
2588
# The socketserver.TCPServer.__init__ will call
2589
# socket.socket(), which might be our replacement,
2590
# socket_wrapper(), if socketfd was set.
1507
2591
socketserver.TCPServer.__init__(self, server_address,
1508
2592
RequestHandlerClass)
2593
1509
2594
def server_bind(self):
1510
2595
"""This overrides the normal server_bind() function
1511
2596
to bind to an interface if one was specified, and also NOT to
1512
2597
bind to an address or port if they were not specified."""
2598
global SO_BINDTODEVICE
1513
2599
if self.interface is not None:
1514
2600
if SO_BINDTODEVICE is None:
1515
logger.error("SO_BINDTODEVICE does not exist;"
1516
" cannot bind to interface %s",
1517
self.interface)
1518
else:
1519
try:
1520
self.socket.setsockopt(socket.SOL_SOCKET,
1521
SO_BINDTODEVICE,
1522
str(self.interface
1523
+ '\0'))
1524
except socket.error as error:
1525
if error[0] == errno.EPERM:
1526
logger.error("No permission to"
1527
" bind to interface %s",
1528
self.interface)
1529
elif error[0] == errno.ENOPROTOOPT:
1530
logger.error("SO_BINDTODEVICE not available;"
1531
" cannot bind to interface %s",
1532
self.interface)
1533
else:
1534
raise
2601
# Fall back to a hard-coded value which seems to be
2602
# common enough.
2603
logger.warning("SO_BINDTODEVICE not found, trying 25")
2604
SO_BINDTODEVICE = 25
2605
try:
2606
self.socket.setsockopt(
2607
socket.SOL_SOCKET, SO_BINDTODEVICE,
2608
(self.interface + "\0").encode("utf-8"))
2609
except socket.error as error:
2610
if error.errno == errno.EPERM:
2611
logger.error("No permission to bind to"
2612
" interface %s", self.interface)
2613
elif error.errno == errno.ENOPROTOOPT:
2614
logger.error("SO_BINDTODEVICE not available;"
2615
" cannot bind to interface %s",
2616
self.interface)
2617
elif error.errno == errno.ENODEV:
2618
logger.error("Interface %s does not exist,"
2619
" cannot bind", self.interface)
2620
else:
2621
raise
1535
2622
# Only bind(2) the socket if we really need to.
1536
2623
if self.server_address[0] or self.server_address[1]:
2624
if self.server_address[1]:
2625
self.allow_reuse_address = True
1537
2626
if not self.server_address[0]:
1538
2627
if self.address_family == socket.AF_INET6:
1539
any_address = "::" # in6addr_any
2628
any_address = "::" # in6addr_any
1540
2629
else:
1541
any_address = socket.INADDR_ANY
2630
any_address = "0.0.0.0" # INADDR_ANY
1542
2631
self.server_address = (any_address,
1543
2632
self.server_address[1])
1544
2633
elif not self.server_address[1]:
1545
self.server_address = (self.server_address[0],
1546
0)
2634
self.server_address = (self.server_address[0], 0)
1547
2635
# if self.interface:
1548
2636
# self.server_address = (self.server_address[0],
1549
2637
# 0, # port
1555
2643
1556
2644
class MandosServer(IPv6_TCPServer):
1557
2645
"""Mandos server.
1558
2646
1559
2647
Attributes:
1560
2648
clients: set of Client objects
1561
2649
gnutls_priority GnuTLS priority string
1562
2650
use_dbus: Boolean; to emit D-Bus signals or not
1563
1564
Assumes a gobject.MainLoop event loop.
2651
2652
Assumes a GLib.MainLoop event loop.
1565
2653
"""
2654
1566
2655
def __init__(self, server_address, RequestHandlerClass,
1567
interface=None, use_ipv6=True, clients=None,
1568
gnutls_priority=None, use_dbus=True):
2656
interface=None,
2657
use_ipv6=True,
2658
clients=None,
2659
gnutls_priority=None,
2660
use_dbus=True,
2661
socketfd=None):
1569
2662
self.enabled = False
1570
2663
self.clients = clients
1571
2664
if self.clients is None:
1572
self.clients = set()
2665
self.clients = {}
1573
2666
self.use_dbus = use_dbus
1574
2667
self.gnutls_priority = gnutls_priority
1575
2668
IPv6_TCPServer.__init__(self, server_address,
1576
2669
RequestHandlerClass,
1577
interface = interface,
1578
use_ipv6 = use_ipv6)
2670
interface=interface,
2671
use_ipv6=use_ipv6,
2672
socketfd=socketfd)
2673
1579
2674
def server_activate(self):
1580
2675
if self.enabled:
1581
2676
return socketserver.TCPServer.server_activate(self)
2677
1582
2678
def enable(self):
1583
2679
self.enabled = True
1584
def add_pipe(self, parent_pipe):
2680
2681
def add_pipe(self, parent_pipe, proc):
1585
2682
# Call "handle_ipc" for both data and EOF events
1586
gobject.io_add_watch(parent_pipe.fileno(),
1587
gobject.IO_IN | gobject.IO_HUP,
1588
functools.partial(self.handle_ipc,
1589
parent_pipe = parent_pipe))
1590
1591
def handle_ipc(self, source, condition, parent_pipe=None,
2683
GLib.io_add_watch(
2684
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2685
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2686
functools.partial(self.handle_ipc,
2687
parent_pipe=parent_pipe,
2688
proc=proc))
2689
2690
def handle_ipc(self, source, condition,
2691
parent_pipe=None,
2692
proc=None,
1592
2693
client_object=None):
1593
condition_names = {
1594
gobject.IO_IN: "IN", # There is data to read.
1595
gobject.IO_OUT: "OUT", # Data can be written (without
1596
# blocking).
1597
gobject.IO_PRI: "PRI", # There is urgent data to read.
1598
gobject.IO_ERR: "ERR", # Error condition.
1599
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1600
# broken, usually for pipes and
1601
# sockets).
1602
}
1603
conditions_string = ' | '.join(name
1604
for cond, name in
1605
condition_names.iteritems()
1606
if cond & condition)
1607
# error or the other end of multiprocessing.Pipe has closed
1608
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2694
# error, or the other end of multiprocessing.Pipe has closed
2695
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2696
# Wait for other process to exit
2697
proc.join()
1609
2698
return False
1610
2699
1611
2700
# Read a request from the child
1612
2701
request = parent_pipe.recv()
1613
2702
command = request[0]
1614
2703
1615
2704
if command == 'init':
1616
fpr = request[1]
1617
address = request[2]
1618
1619
for c in self.clients:
1620
if c.fingerprint == fpr:
2705
key_id = request[1].decode("ascii")
2706
fpr = request[2].decode("ascii")
2707
address = request[3]
2708
2709
for c in self.clients.values():
2710
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2711
continue
2712
if key_id and c.key_id == key_id:
2713
client = c
2714
break
2715
if fpr and c.fingerprint == fpr:
1621
2716
client = c
1622
2717
break
1623
2718
else:
1624
logger.info("Client not found for fingerprint: %s, ad"
1625
"dress: %s", fpr, address)
2719
logger.info("Client not found for key ID: %s, address"
2720
": %s", key_id or fpr, address)
1626
2721
if self.use_dbus:
1627
2722
# Emit D-Bus signal
1628
mandos_dbus_service.ClientNotFound(fpr, address[0])
2723
mandos_dbus_service.ClientNotFound(key_id or fpr,
2724
address[0])
1629
2725
parent_pipe.send(False)
1630
2726
return False
1631
1632
gobject.io_add_watch(parent_pipe.fileno(),
1633
gobject.IO_IN | gobject.IO_HUP,
1634
functools.partial(self.handle_ipc,
1635
parent_pipe = parent_pipe,
1636
client_object = client))
2727
2728
GLib.io_add_watch(
2729
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2730
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2731
functools.partial(self.handle_ipc,
2732
parent_pipe=parent_pipe,
2733
proc=proc,
2734
client_object=client))
1637
2735
parent_pipe.send(True)
1638
# remove the old hook in favor of the new above hook on same fileno
2736
# remove the old hook in favor of the new above hook on
2737
# same fileno
1639
2738
return False
1640
2739
if command == 'funcall':
1641
2740
funcname = request[1]
1642
2741
args = request[2]
1643
2742
kwargs = request[3]
1644
1645
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2743
2744
parent_pipe.send(('data', getattr(client_object,
2745
funcname)(*args,
2746
**kwargs)))
1646
2747
1647
2748
if command == 'getattr':
1648
2749
attrname = request[1]
1649
if callable(client_object.__getattribute__(attrname)):
1650
parent_pipe.send(('function',))
2750
if isinstance(client_object.__getattribute__(attrname),
2751
collections.Callable):
2752
parent_pipe.send(('function', ))
1651
2753
else:
1652
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1653
2754
parent_pipe.send((
2755
'data', client_object.__getattribute__(attrname)))
2756
1654
2757
if command == 'setattr':
1655
2758
attrname = request[1]
1656
2759
value = request[2]
1659
2762
return True
1660
2763
1661
2764
2765
def rfc3339_duration_to_delta(duration):
2766
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2767
2768
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2769
True
2770
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2771
True
2772
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2773
True
2774
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2775
True
2776
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2777
True
2778
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2779
True
2780
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2781
True
2782
"""
2783
2784
# Parsing an RFC 3339 duration with regular expressions is not
2785
# possible - there would have to be multiple places for the same
2786
# values, like seconds. The current code, while more esoteric, is
2787
# cleaner without depending on a parsing library. If Python had a
2788
# built-in library for parsing we would use it, but we'd like to
2789
# avoid excessive use of external libraries.
2790
2791
# New type for defining tokens, syntax, and semantics all-in-one
2792
Token = collections.namedtuple("Token", (
2793
"regexp", # To match token; if "value" is not None, must have
2794
# a "group" containing digits
2795
"value", # datetime.timedelta or None
2796
"followers")) # Tokens valid after this token
2797
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2798
# the "duration" ABNF definition in RFC 3339, Appendix A.
2799
token_end = Token(re.compile(r"$"), None, frozenset())
2800
token_second = Token(re.compile(r"(\d+)S"),
2801
datetime.timedelta(seconds=1),
2802
frozenset((token_end, )))
2803
token_minute = Token(re.compile(r"(\d+)M"),
2804
datetime.timedelta(minutes=1),
2805
frozenset((token_second, token_end)))
2806
token_hour = Token(re.compile(r"(\d+)H"),
2807
datetime.timedelta(hours=1),
2808
frozenset((token_minute, token_end)))
2809
token_time = Token(re.compile(r"T"),
2810
None,
2811
frozenset((token_hour, token_minute,
2812
token_second)))
2813
token_day = Token(re.compile(r"(\d+)D"),
2814
datetime.timedelta(days=1),
2815
frozenset((token_time, token_end)))
2816
token_month = Token(re.compile(r"(\d+)M"),
2817
datetime.timedelta(weeks=4),
2818
frozenset((token_day, token_end)))
2819
token_year = Token(re.compile(r"(\d+)Y"),
2820
datetime.timedelta(weeks=52),
2821
frozenset((token_month, token_end)))
2822
token_week = Token(re.compile(r"(\d+)W"),
2823
datetime.timedelta(weeks=1),
2824
frozenset((token_end, )))
2825
token_duration = Token(re.compile(r"P"), None,
2826
frozenset((token_year, token_month,
2827
token_day, token_time,
2828
token_week)))
2829
# Define starting values:
2830
# Value so far
2831
value = datetime.timedelta()
2832
found_token = None
2833
# Following valid tokens
2834
followers = frozenset((token_duration, ))
2835
# String left to parse
2836
s = duration
2837
# Loop until end token is found
2838
while found_token is not token_end:
2839
# Search for any currently valid tokens
2840
for token in followers:
2841
match = token.regexp.match(s)
2842
if match is not None:
2843
# Token found
2844
if token.value is not None:
2845
# Value found, parse digits
2846
factor = int(match.group(1), 10)
2847
# Add to value so far
2848
value += factor * token.value
2849
# Strip token from string
2850
s = token.regexp.sub("", s, 1)
2851
# Go to found token
2852
found_token = token
2853
# Set valid next tokens
2854
followers = found_token.followers
2855
break
2856
else:
2857
# No currently valid tokens were found
2858
raise ValueError("Invalid RFC 3339 duration: {!r}"
2859
.format(duration))
2860
# End token found
2861
return value
2862
2863
1662
2864
def string_to_delta(interval):
1663
2865
"""Parse a string and return a datetime.timedelta
1664
1665
>>> string_to_delta('7d')
1666
datetime.timedelta(7)
1667
>>> string_to_delta('60s')
1668
datetime.timedelta(0, 60)
1669
>>> string_to_delta('60m')
1670
datetime.timedelta(0, 3600)
1671
>>> string_to_delta('24h')
1672
datetime.timedelta(1)
1673
>>> string_to_delta('1w')
1674
datetime.timedelta(7)
1675
>>> string_to_delta('5m 30s')
1676
datetime.timedelta(0, 330)
2866
2867
>>> string_to_delta('7d') == datetime.timedelta(7)
2868
True
2869
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2870
True
2871
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2872
True
2873
>>> string_to_delta('24h') == datetime.timedelta(1)
2874
True
2875
>>> string_to_delta('1w') == datetime.timedelta(7)
2876
True
2877
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2878
True
1677
2879
"""
2880
2881
try:
2882
return rfc3339_duration_to_delta(interval)
2883
except ValueError:
2884
pass
2885
1678
2886
timevalue = datetime.timedelta(0)
1679
2887
for s in interval.split():
1680
2888
try:
1681
suffix = unicode(s[-1])
2889
suffix = s[-1]
1682
2890
value = int(s[:-1])
1683
2891
if suffix == "d":
1684
2892
delta = datetime.timedelta(value)
1691
2899
elif suffix == "w":
1692
2900
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1693
2901
else:
1694
raise ValueError("Unknown suffix %r" % suffix)
1695
except (ValueError, IndexError) as e:
2902
raise ValueError("Unknown suffix {!r}".format(suffix))
2903
except IndexError as e:
1696
2904
raise ValueError(*(e.args))
1697
2905
timevalue += delta
1698
2906
return timevalue
1699
2907
1700
2908
1701
def if_nametoindex(interface):
1702
"""Call the C function if_nametoindex(), or equivalent
1703
1704
Note: This function cannot accept a unicode string."""
1705
global if_nametoindex
1706
try:
1707
if_nametoindex = (ctypes.cdll.LoadLibrary
1708
(ctypes.util.find_library("c"))
1709
.if_nametoindex)
1710
except (OSError, AttributeError):
1711
logger.warning("Doing if_nametoindex the hard way")
1712
def if_nametoindex(interface):
1713
"Get an interface index the hard way, i.e. using fcntl()"
1714
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1715
with contextlib.closing(socket.socket()) as s:
1716
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1717
struct.pack(str("16s16x"),
1718
interface))
1719
interface_index = struct.unpack(str("I"),
1720
ifreq[16:20])[0]
1721
return interface_index
1722
return if_nametoindex(interface)
1723
1724
1725
def daemon(nochdir = False, noclose = False):
2909
def daemon(nochdir=False, noclose=False):
1726
2910
"""See daemon(3). Standard BSD Unix function.
1727
2911
1728
2912
This should really exist as os.daemon, but it doesn't (yet)."""
1729
2913
if os.fork():
1730
2914
sys.exit()
1735
2919
sys.exit()
1736
2920
if not noclose:
1737
2921
# Close all standard open file descriptors
1738
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2922
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1739
2923
if not stat.S_ISCHR(os.fstat(null).st_mode):
1740
2924
raise OSError(errno.ENODEV,
1741
"%s not a character device"
1742
% os.path.devnull)
2925
"{} not a character device"
2926
.format(os.devnull))
1743
2927
os.dup2(null, sys.stdin.fileno())
1744
2928
os.dup2(null, sys.stdout.fileno())
1745
2929
os.dup2(null, sys.stderr.fileno())
1748
2932
1749
2933
1750
2934
def main():
1751
2935
1752
2936
##################################################################
1753
2937
# Parsing of options, both command line and config file
1754
2938
1755
2939
parser = argparse.ArgumentParser()
1756
2940
parser.add_argument("-v", "--version", action="version",
1757
version = "%%(prog)s %s" % version,
2941
version="%(prog)s {}".format(version),
1758
2942
help="show version number and exit")
1759
2943
parser.add_argument("-i", "--interface", metavar="IF",
1760
2944
help="Bind to interface IF")
1766
2950
help="Run self-test")
1767
2951
parser.add_argument("--debug", action="store_true",
1768
2952
help="Debug mode; run in foreground and log"
1769
" to terminal")
2953
" to terminal", default=None)
1770
2954
parser.add_argument("--debuglevel", metavar="LEVEL",
1771
2955
help="Debug level for stdout output")
1772
2956
parser.add_argument("--priority", help="GnuTLS"
1779
2963
" files")
1780
2964
parser.add_argument("--no-dbus", action="store_false",
1781
2965
dest="use_dbus", help="Do not provide D-Bus"
1782
" system bus interface")
2966
" system bus interface", default=None)
1783
2967
parser.add_argument("--no-ipv6", action="store_false",
1784
dest="use_ipv6", help="Do not use IPv6")
2968
dest="use_ipv6", help="Do not use IPv6",
2969
default=None)
2970
parser.add_argument("--no-restore", action="store_false",
2971
dest="restore", help="Do not restore stored"
2972
" state", default=None)
2973
parser.add_argument("--socket", type=int,
2974
help="Specify a file descriptor to a network"
2975
" socket to use instead of creating one")
2976
parser.add_argument("--statedir", metavar="DIR",
2977
help="Directory to save/restore state in")
2978
parser.add_argument("--foreground", action="store_true",
2979
help="Run in foreground", default=None)
2980
parser.add_argument("--no-zeroconf", action="store_false",
2981
dest="zeroconf", help="Do not use Zeroconf",
2982
default=None)
2983
1785
2984
options = parser.parse_args()
1786
1787
if options.check:
1788
import doctest
1789
doctest.testmod()
1790
sys.exit()
1791
2985
1792
2986
# Default values for config file for server-global settings
1793
server_defaults = { "interface": "",
1794
"address": "",
1795
"port": "",
1796
"debug": "False",
1797
"priority":
1798
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1799
"servicename": "Mandos",
1800
"use_dbus": "True",
1801
"use_ipv6": "True",
1802
"debuglevel": "",
1803
}
1804
2987
if gnutls.has_rawpk:
2988
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2989
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2990
else:
2991
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2992
":+SIGN-DSA-SHA256")
2993
server_defaults = {"interface": "",
2994
"address": "",
2995
"port": "",
2996
"debug": "False",
2997
"priority": priority,
2998
"servicename": "Mandos",
2999
"use_dbus": "True",
3000
"use_ipv6": "True",
3001
"debuglevel": "",
3002
"restore": "True",
3003
"socket": "",
3004
"statedir": "/var/lib/mandos",
3005
"foreground": "False",
3006
"zeroconf": "True",
3007
}
3008
del priority
3009
1805
3010
# Parse config file for server-global settings
1806
server_config = configparser.SafeConfigParser(server_defaults)
3011
server_config = configparser.ConfigParser(server_defaults)
1807
3012
del server_defaults
1808
server_config.read(os.path.join(options.configdir,
1809
"mandos.conf"))
1810
# Convert the SafeConfigParser object to a dict
3013
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3014
# Convert the ConfigParser object to a dict
1811
3015
server_settings = server_config.defaults()
1812
3016
# Use the appropriate methods on the non-string config options
1813
for option in ("debug", "use_dbus", "use_ipv6"):
3017
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3018
"foreground", "zeroconf"):
1814
3019
server_settings[option] = server_config.getboolean("DEFAULT",
1815
3020
option)
1816
3021
if server_settings["port"]:
1817
3022
server_settings["port"] = server_config.getint("DEFAULT",
1818
3023
"port")
3024
if server_settings["socket"]:
3025
server_settings["socket"] = server_config.getint("DEFAULT",
3026
"socket")
3027
# Later, stdin will, and stdout and stderr might, be dup'ed
3028
# over with an opened os.devnull. But we don't want this to
3029
# happen with a supplied network socket.
3030
if 0 <= server_settings["socket"] <= 2:
3031
server_settings["socket"] = os.dup(server_settings
3032
["socket"])
1819
3033
del server_config
1820
3034
1821
3035
# Override the settings from the config file with command line
1822
3036
# options, if set.
1823
3037
for option in ("interface", "address", "port", "debug",
1824
"priority", "servicename", "configdir",
1825
"use_dbus", "use_ipv6", "debuglevel"):
3038
"priority", "servicename", "configdir", "use_dbus",
3039
"use_ipv6", "debuglevel", "restore", "statedir",
3040
"socket", "foreground", "zeroconf"):
1826
3041
value = getattr(options, option)
1827
3042
if value is not None:
1828
3043
server_settings[option] = value
1829
3044
del options
1830
3045
# Force all strings to be unicode
1831
3046
for option in server_settings.keys():
1832
if type(server_settings[option]) is str:
1833
server_settings[option] = unicode(server_settings[option])
3047
if isinstance(server_settings[option], bytes):
3048
server_settings[option] = (server_settings[option]
3049
.decode("utf-8"))
3050
# Force all boolean options to be boolean
3051
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3052
"foreground", "zeroconf"):
3053
server_settings[option] = bool(server_settings[option])
3054
# Debug implies foreground
3055
if server_settings["debug"]:
3056
server_settings["foreground"] = True
1834
3057
# Now we have our good server settings in "server_settings"
1835
3058
1836
3059
##################################################################
1837
3060
3061
if (not server_settings["zeroconf"]
3062
and not (server_settings["port"]
3063
or server_settings["socket"] != "")):
3064
parser.error("Needs port or socket to work without Zeroconf")
3065
1838
3066
# For convenience
1839
3067
debug = server_settings["debug"]
1840
3068
debuglevel = server_settings["debuglevel"]
1841
3069
use_dbus = server_settings["use_dbus"]
1842
3070
use_ipv6 = server_settings["use_ipv6"]
3071
stored_state_path = os.path.join(server_settings["statedir"],
3072
stored_state_file)
3073
foreground = server_settings["foreground"]
3074
zeroconf = server_settings["zeroconf"]
3075
3076
if debug:
3077
initlogger(debug, logging.DEBUG)
3078
else:
3079
if not debuglevel:
3080
initlogger(debug)
3081
else:
3082
level = getattr(logging, debuglevel.upper())
3083
initlogger(debug, level)
1843
3084
1844
3085
if server_settings["servicename"] != "Mandos":
1845
syslogger.setFormatter(logging.Formatter
1846
('Mandos (%s) [%%(process)d]:'
1847
' %%(levelname)s: %%(message)s'
1848
% server_settings["servicename"]))
1849
3086
syslogger.setFormatter(
3087
logging.Formatter('Mandos ({}) [%(process)d]:'
3088
' %(levelname)s: %(message)s'.format(
3089
server_settings["servicename"])))
3090
1850
3091
# Parse config file with clients
1851
client_defaults = { "timeout": "5m",
1852
"extended_timeout": "15m",
1853
"interval": "2m",
1854
"checker": "fping -q -- %%(host)s",
1855
"host": "",
1856
"approval_delay": "0s",
1857
"approval_duration": "1s",
1858
}
1859
client_config = configparser.SafeConfigParser(client_defaults)
3092
client_config = configparser.ConfigParser(Client.client_defaults)
1860
3093
client_config.read(os.path.join(server_settings["configdir"],
1861
3094
"clients.conf"))
1862
3095
1863
3096
global mandos_dbus_service
1864
3097
mandos_dbus_service = None
1865
1866
tcp_server = MandosServer((server_settings["address"],
1867
server_settings["port"]),
1868
ClientHandler,
1869
interface=(server_settings["interface"]
1870
or None),
1871
use_ipv6=use_ipv6,
1872
gnutls_priority=
1873
server_settings["priority"],
1874
use_dbus=use_dbus)
1875
if not debug:
1876
pidfilename = "/var/run/mandos.pid"
1877
try:
1878
pidfile = open(pidfilename, "w")
1879
except IOError:
1880
logger.error("Could not open file %r", pidfilename)
1881
1882
try:
1883
uid = pwd.getpwnam("_mandos").pw_uid
1884
gid = pwd.getpwnam("_mandos").pw_gid
1885
except KeyError:
1886
try:
1887
uid = pwd.getpwnam("mandos").pw_uid
1888
gid = pwd.getpwnam("mandos").pw_gid
3098
3099
socketfd = None
3100
if server_settings["socket"] != "":
3101
socketfd = server_settings["socket"]
3102
tcp_server = MandosServer(
3103
(server_settings["address"], server_settings["port"]),
3104
ClientHandler,
3105
interface=(server_settings["interface"] or None),
3106
use_ipv6=use_ipv6,
3107
gnutls_priority=server_settings["priority"],
3108
use_dbus=use_dbus,
3109
socketfd=socketfd)
3110
if not foreground:
3111
pidfilename = "/run/mandos.pid"
3112
if not os.path.isdir("/run/."):
3113
pidfilename = "/var/run/mandos.pid"
3114
pidfile = None
3115
try:
3116
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3117
except IOError as e:
3118
logger.error("Could not open file %r", pidfilename,
3119
exc_info=e)
3120
3121
for name, group in (("_mandos", "_mandos"),
3122
("mandos", "mandos"),
3123
("nobody", "nogroup")):
3124
try:
3125
uid = pwd.getpwnam(name).pw_uid
3126
gid = pwd.getpwnam(group).pw_gid
3127
break
1889
3128
except KeyError:
1890
try:
1891
uid = pwd.getpwnam("nobody").pw_uid
1892
gid = pwd.getpwnam("nobody").pw_gid
1893
except KeyError:
1894
uid = 65534
1895
gid = 65534
3129
continue
3130
else:
3131
uid = 65534
3132
gid = 65534
1896
3133
try:
1897
3134
os.setgid(gid)
1898
3135
os.setuid(uid)
3136
if debug:
3137
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3138
gid))
1899
3139
except OSError as error:
1900
if error[0] != errno.EPERM:
1901
raise error
1902
1903
if not debug and not debuglevel:
1904
syslogger.setLevel(logging.WARNING)
1905
console.setLevel(logging.WARNING)
1906
if debuglevel:
1907
level = getattr(logging, debuglevel.upper())
1908
syslogger.setLevel(level)
1909
console.setLevel(level)
3140
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3141
.format(uid, gid, os.strerror(error.errno)))
3142
if error.errno != errno.EPERM:
3143
raise
1910
3144
1911
3145
if debug:
1912
3146
# Enable all possible GnuTLS debugging
1913
3147
1914
3148
# "Use a log level over 10 to enable all debugging options."
1915
3149
# - GnuTLS manual
1916
gnutls.library.functions.gnutls_global_set_log_level(11)
1917
1918
@gnutls.library.types.gnutls_log_func
3150
gnutls.global_set_log_level(11)
3151
3152
@gnutls.log_func
1919
3153
def debug_gnutls(level, string):
1920
3154
logger.debug("GnuTLS: %s", string[:-1])
1921
1922
(gnutls.library.functions
1923
.gnutls_global_set_log_function(debug_gnutls))
1924
3155
3156
gnutls.global_set_log_function(debug_gnutls)
3157
1925
3158
# Redirect stdin so all checkers get /dev/null
1926
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3159
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1927
3160
os.dup2(null, sys.stdin.fileno())
1928
3161
if null > 2:
1929
3162
os.close(null)
1930
else:
1931
# No console logging
1932
logger.removeHandler(console)
1933
3163
1934
3164
# Need to fork before connecting to D-Bus
1935
if not debug:
3165
if not foreground:
1936
3166
# Close all input and output, do double fork, etc.
1937
3167
daemon()
1938
3168
3169
if gi.version_info < (3, 10, 2):
3170
# multiprocessing will use threads, so before we use GLib we
3171
# need to inform GLib that threads will be used.
3172
GLib.threads_init()
3173
1939
3174
global main_loop
1940
3175
# From the Avahi example code
1941
DBusGMainLoop(set_as_default=True )
1942
main_loop = gobject.MainLoop()
3176
DBusGMainLoop(set_as_default=True)
3177
main_loop = GLib.MainLoop()
1943
3178
bus = dbus.SystemBus()
1944
3179
# End of Avahi example code
1945
3180
if use_dbus:
1946
3181
try:
1947
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1948
bus, do_not_queue=True)
1949
except dbus.exceptions.NameExistsException as e:
1950
logger.error(unicode(e) + ", disabling D-Bus")
3182
bus_name = dbus.service.BusName("se.recompile.Mandos",
3183
bus,
3184
do_not_queue=True)
3185
old_bus_name = dbus.service.BusName(
3186
"se.bsnet.fukt.Mandos", bus,
3187
do_not_queue=True)
3188
except dbus.exceptions.DBusException as e:
3189
logger.error("Disabling D-Bus:", exc_info=e)
1951
3190
use_dbus = False
1952
3191
server_settings["use_dbus"] = False
1953
3192
tcp_server.use_dbus = False
1954
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1955
service = AvahiService(name = server_settings["servicename"],
1956
servicetype = "_mandos._tcp",
1957
protocol = protocol, bus = bus)
1958
if server_settings["interface"]:
1959
service.interface = (if_nametoindex
1960
(str(server_settings["interface"])))
1961
3193
if zeroconf:
3194
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3195
service = AvahiServiceToSyslog(
3196
name=server_settings["servicename"],
3197
servicetype="_mandos._tcp",
3198
protocol=protocol,
3199
bus=bus)
3200
if server_settings["interface"]:
3201
service.interface = if_nametoindex(
3202
server_settings["interface"].encode("utf-8"))
3203
1962
3204
global multiprocessing_manager
1963
3205
multiprocessing_manager = multiprocessing.Manager()
1964
3206
1965
3207
client_class = Client
1966
3208
if use_dbus:
1967
client_class = functools.partial(ClientDBus, bus = bus)
1968
def client_config_items(config, section):
1969
special_settings = {
1970
"approved_by_default":
1971
lambda: config.getboolean(section,
1972
"approved_by_default"),
1973
}
1974
for name, value in config.items(section):
3209
client_class = functools.partial(ClientDBus, bus=bus)
3210
3211
client_settings = Client.config_parser(client_config)
3212
old_client_settings = {}
3213
clients_data = {}
3214
3215
# This is used to redirect stdout and stderr for checker processes
3216
global wnull
3217
wnull = open(os.devnull, "w") # A writable /dev/null
3218
# Only used if server is running in foreground but not in debug
3219
# mode
3220
if debug or not foreground:
3221
wnull.close()
3222
3223
# Get client data and settings from last running state.
3224
if server_settings["restore"]:
3225
try:
3226
with open(stored_state_path, "rb") as stored_state:
3227
if sys.version_info.major == 2:
3228
clients_data, old_client_settings = pickle.load(
3229
stored_state)
3230
else:
3231
bytes_clients_data, bytes_old_client_settings = (
3232
pickle.load(stored_state, encoding="bytes"))
3233
# Fix bytes to strings
3234
# clients_data
3235
# .keys()
3236
clients_data = {(key.decode("utf-8")
3237
if isinstance(key, bytes)
3238
else key): value
3239
for key, value in
3240
bytes_clients_data.items()}
3241
del bytes_clients_data
3242
for key in clients_data:
3243
value = {(k.decode("utf-8")
3244
if isinstance(k, bytes) else k): v
3245
for k, v in
3246
clients_data[key].items()}
3247
clients_data[key] = value
3248
# .client_structure
3249
value["client_structure"] = [
3250
(s.decode("utf-8")
3251
if isinstance(s, bytes)
3252
else s) for s in
3253
value["client_structure"]]
3254
# .name, .host, and .checker_command
3255
for k in ("name", "host", "checker_command"):
3256
if isinstance(value[k], bytes):
3257
value[k] = value[k].decode("utf-8")
3258
if "key_id" not in value:
3259
value["key_id"] = ""
3260
elif "fingerprint" not in value:
3261
value["fingerprint"] = ""
3262
# old_client_settings
3263
# .keys()
3264
old_client_settings = {
3265
(key.decode("utf-8")
3266
if isinstance(key, bytes)
3267
else key): value
3268
for key, value in
3269
bytes_old_client_settings.items()}
3270
del bytes_old_client_settings
3271
# .host and .checker_command
3272
for value in old_client_settings.values():
3273
for attribute in ("host", "checker_command"):
3274
if isinstance(value[attribute], bytes):
3275
value[attribute] = (value[attribute]
3276
.decode("utf-8"))
3277
os.remove(stored_state_path)
3278
except IOError as e:
3279
if e.errno == errno.ENOENT:
3280
logger.warning("Could not load persistent state:"
3281
" {}".format(os.strerror(e.errno)))
3282
else:
3283
logger.critical("Could not load persistent state:",
3284
exc_info=e)
3285
raise
3286
except EOFError as e:
3287
logger.warning("Could not load persistent state: "
3288
"EOFError:",
3289
exc_info=e)
3290
3291
with PGPEngine() as pgp:
3292
for client_name, client in clients_data.items():
3293
# Skip removed clients
3294
if client_name not in client_settings:
3295
continue
3296
3297
# Decide which value to use after restoring saved state.
3298
# We have three different values: Old config file,
3299
# new config file, and saved state.
3300
# New config value takes precedence if it differs from old
3301
# config value, otherwise use saved state.
3302
for name, value in client_settings[client_name].items():
3303
try:
3304
# For each value in new config, check if it
3305
# differs from the old config value (Except for
3306
# the "secret" attribute)
3307
if (name != "secret"
3308
and (value !=
3309
old_client_settings[client_name][name])):
3310
client[name] = value
3311
except KeyError:
3312
pass
3313
3314
# Clients who has passed its expire date can still be
3315
# enabled if its last checker was successful. A Client
3316
# whose checker succeeded before we stored its state is
3317
# assumed to have successfully run all checkers during
3318
# downtime.
3319
if client["enabled"]:
3320
if datetime.datetime.utcnow() >= client["expires"]:
3321
if not client["last_checked_ok"]:
3322
logger.warning(
3323
"disabling client {} - Client never "
3324
"performed a successful checker".format(
3325
client_name))
3326
client["enabled"] = False
3327
elif client["last_checker_status"] != 0:
3328
logger.warning(
3329
"disabling client {} - Client last"
3330
" checker failed with error code"
3331
" {}".format(
3332
client_name,
3333
client["last_checker_status"]))
3334
client["enabled"] = False
3335
else:
3336
client["expires"] = (
3337
datetime.datetime.utcnow()
3338
+ client["timeout"])
3339
logger.debug("Last checker succeeded,"
3340
" keeping {} enabled".format(
3341
client_name))
1975
3342
try:
1976
yield (name, special_settings[name]())
1977
except KeyError:
1978
yield (name, value)
1979
1980
tcp_server.clients.update(set(
1981
client_class(name = section,
1982
config= dict(client_config_items(
1983
client_config, section)))
1984
for section in client_config.sections()))
3343
client["secret"] = pgp.decrypt(
3344
client["encrypted_secret"],
3345
client_settings[client_name]["secret"])
3346
except PGPError:
3347
# If decryption fails, we use secret from new settings
3348
logger.debug("Failed to decrypt {} old secret".format(
3349
client_name))
3350
client["secret"] = (client_settings[client_name]
3351
["secret"])
3352
3353
# Add/remove clients based on new changes made to config
3354
for client_name in (set(old_client_settings)
3355
- set(client_settings)):
3356
del clients_data[client_name]
3357
for client_name in (set(client_settings)
3358
- set(old_client_settings)):
3359
clients_data[client_name] = client_settings[client_name]
3360
3361
# Create all client objects
3362
for client_name, client in clients_data.items():
3363
tcp_server.clients[client_name] = client_class(
3364
name=client_name,
3365
settings=client,
3366
server_settings=server_settings)
3367
1985
3368
if not tcp_server.clients:
1986
3369
logger.warning("No clients defined")
1987
1988
if not debug:
1989
try:
1990
with pidfile:
1991
pid = os.getpid()
1992
pidfile.write(str(pid) + "\n".encode("utf-8"))
1993
del pidfile
1994
except IOError:
1995
logger.error("Could not write to file %r with PID %d",
1996
pidfilename, pid)
1997
except NameError:
1998
# "pidfile" was never created
1999
pass
3370
3371
if not foreground:
3372
if pidfile is not None:
3373
pid = os.getpid()
3374
try:
3375
with pidfile:
3376
print(pid, file=pidfile)
3377
except IOError:
3378
logger.error("Could not write to file %r with PID %d",
3379
pidfilename, pid)
3380
del pidfile
2000
3381
del pidfilename
2001
2002
signal.signal(signal.SIGINT, signal.SIG_IGN)
2003
2004
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2005
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2006
3382
3383
for termsig in (signal.SIGHUP, signal.SIGTERM):
3384
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3385
lambda: main_loop.quit() and False)
3386
2007
3387
if use_dbus:
2008
class MandosDBusService(dbus.service.Object):
3388
3389
@alternate_dbus_interfaces(
3390
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3391
class MandosDBusService(DBusObjectWithObjectManager):
2009
3392
"""A D-Bus proxy object"""
3393
2010
3394
def __init__(self):
2011
3395
dbus.service.Object.__init__(self, bus, "/")
2012
_interface = "se.bsnet.fukt.Mandos"
2013
3396
3397
_interface = "se.recompile.Mandos"
3398
2014
3399
@dbus.service.signal(_interface, signature="o")
2015
3400
def ClientAdded(self, objpath):
2016
3401
"D-Bus signal"
2017
3402
pass
2018
3403
2019
3404
@dbus.service.signal(_interface, signature="ss")
2020
def ClientNotFound(self, fingerprint, address):
3405
def ClientNotFound(self, key_id, address):
2021
3406
"D-Bus signal"
2022
3407
pass
2023
3408
3409
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3410
"true"})
2024
3411
@dbus.service.signal(_interface, signature="os")
2025
3412
def ClientRemoved(self, objpath, name):
2026
3413
"D-Bus signal"
2027
3414
pass
2028
3415
3416
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3417
"true"})
2029
3418
@dbus.service.method(_interface, out_signature="ao")
2030
3419
def GetAllClients(self):
2031
3420
"D-Bus method"
2032
return dbus.Array(c.dbus_object_path
2033
for c in tcp_server.clients)
2034
3421
return dbus.Array(c.dbus_object_path for c in
3422
tcp_server.clients.values())
3423
3424
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3425
"true"})
2035
3426
@dbus.service.method(_interface,
2036
3427
out_signature="a{oa{sv}}")
2037
3428
def GetAllClientsWithProperties(self):
2038
3429
"D-Bus method"
2039
3430
return dbus.Dictionary(
2040
((c.dbus_object_path, c.GetAll(""))
2041
for c in tcp_server.clients),
3431
{c.dbus_object_path: c.GetAll(
3432
"se.recompile.Mandos.Client")
3433
for c in tcp_server.clients.values()},
2042
3434
signature="oa{sv}")
2043
3435
2044
3436
@dbus.service.method(_interface, in_signature="o")
2045
3437
def RemoveClient(self, object_path):
2046
3438
"D-Bus method"
2047
for c in tcp_server.clients:
3439
for c in tcp_server.clients.values():
2048
3440
if c.dbus_object_path == object_path:
2049
tcp_server.clients.remove(c)
3441
del tcp_server.clients[c.name]
2050
3442
c.remove_from_connection()
2051
# Don't signal anything except ClientRemoved
3443
# Don't signal the disabling
2052
3444
c.disable(quiet=True)
2053
# Emit D-Bus signal
2054
self.ClientRemoved(object_path, c.name)
3445
# Emit D-Bus signal for removal
3446
self.client_removed_signal(c)
2055
3447
return
2056
3448
raise KeyError(object_path)
2057
3449
2058
3450
del _interface
2059
3451
3452
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3453
out_signature="a{oa{sa{sv}}}")
3454
def GetManagedObjects(self):
3455
"""D-Bus method"""
3456
return dbus.Dictionary(
3457
{client.dbus_object_path:
3458
dbus.Dictionary(
3459
{interface: client.GetAll(interface)
3460
for interface in
3461
client._get_all_interface_names()})
3462
for client in tcp_server.clients.values()})
3463
3464
def client_added_signal(self, client):
3465
"""Send the new standard signal and the old signal"""
3466
if use_dbus:
3467
# New standard signal
3468
self.InterfacesAdded(
3469
client.dbus_object_path,
3470
dbus.Dictionary(
3471
{interface: client.GetAll(interface)
3472
for interface in
3473
client._get_all_interface_names()}))
3474
# Old signal
3475
self.ClientAdded(client.dbus_object_path)
3476
3477
def client_removed_signal(self, client):
3478
"""Send the new standard signal and the old signal"""
3479
if use_dbus:
3480
# New standard signal
3481
self.InterfacesRemoved(
3482
client.dbus_object_path,
3483
client._get_all_interface_names())
3484
# Old signal
3485
self.ClientRemoved(client.dbus_object_path,
3486
client.name)
3487
2060
3488
mandos_dbus_service = MandosDBusService()
2061
3489
3490
# Save modules to variables to exempt the modules from being
3491
# unloaded before the function registered with atexit() is run.
3492
mp = multiprocessing
3493
wn = wnull
3494
2062
3495
def cleanup():
2063
3496
"Cleanup function; run on exit"
2064
service.cleanup()
2065
3497
if zeroconf:
3498
service.cleanup()
3499
3500
mp.active_children()
3501
wn.close()
3502
if not (tcp_server.clients or client_settings):
3503
return
3504
3505
# Store client before exiting. Secrets are encrypted with key
3506
# based on what config file has. If config file is
3507
# removed/edited, old secret will thus be unrecovable.
3508
clients = {}
3509
with PGPEngine() as pgp:
3510
for client in tcp_server.clients.values():
3511
key = client_settings[client.name]["secret"]
3512
client.encrypted_secret = pgp.encrypt(client.secret,
3513
key)
3514
client_dict = {}
3515
3516
# A list of attributes that can not be pickled
3517
# + secret.
3518
exclude = {"bus", "changedstate", "secret",
3519
"checker", "server_settings"}
3520
for name, typ in inspect.getmembers(dbus.service
3521
.Object):
3522
exclude.add(name)
3523
3524
client_dict["encrypted_secret"] = (client
3525
.encrypted_secret)
3526
for attr in client.client_structure:
3527
if attr not in exclude:
3528
client_dict[attr] = getattr(client, attr)
3529
3530
clients[client.name] = client_dict
3531
del client_settings[client.name]["secret"]
3532
3533
try:
3534
with tempfile.NamedTemporaryFile(
3535
mode='wb',
3536
suffix=".pickle",
3537
prefix='clients-',
3538
dir=os.path.dirname(stored_state_path),
3539
delete=False) as stored_state:
3540
pickle.dump((clients, client_settings), stored_state,
3541
protocol=2)
3542
tempname = stored_state.name
3543
os.rename(tempname, stored_state_path)
3544
except (IOError, OSError) as e:
3545
if not debug:
3546
try:
3547
os.remove(tempname)
3548
except NameError:
3549
pass
3550
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3551
logger.warning("Could not save persistent state: {}"
3552
.format(os.strerror(e.errno)))
3553
else:
3554
logger.warning("Could not save persistent state:",
3555
exc_info=e)
3556
raise
3557
3558
# Delete all clients, and settings from config
2066
3559
while tcp_server.clients:
2067
client = tcp_server.clients.pop()
3560
name, client = tcp_server.clients.popitem()
2068
3561
if use_dbus:
2069
3562
client.remove_from_connection()
2070
client.disable_hook = None
2071
# Don't signal anything except ClientRemoved
3563
# Don't signal the disabling
2072
3564
client.disable(quiet=True)
3565
# Emit D-Bus signal for removal
2073
3566
if use_dbus:
2074
# Emit D-Bus signal
2075
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2076
client.name)
2077
3567
mandos_dbus_service.client_removed_signal(client)
3568
client_settings.clear()
3569
2078
3570
atexit.register(cleanup)
2079
2080
for client in tcp_server.clients:
3571
3572
for client in tcp_server.clients.values():
2081
3573
if use_dbus:
2082
# Emit D-Bus signal
2083
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2084
client.enable()
2085
3574
# Emit D-Bus signal for adding
3575
mandos_dbus_service.client_added_signal(client)
3576
# Need to initiate checking of clients
3577
if client.enabled:
3578
client.init_checker()
3579
2086
3580
tcp_server.enable()
2087
3581
tcp_server.server_activate()
2088
3582
2089
3583
# Find out what port we got
2090
service.port = tcp_server.socket.getsockname()[1]
3584
if zeroconf:
3585
service.port = tcp_server.socket.getsockname()[1]
2091
3586
if use_ipv6:
2092
3587
logger.info("Now listening on address %r, port %d,"
2093
" flowinfo %d, scope_id %d"
2094
% tcp_server.socket.getsockname())
3588
" flowinfo %d, scope_id %d",
3589
*tcp_server.socket.getsockname())
2095
3590
else: # IPv4
2096
logger.info("Now listening on address %r, port %d"
2097
% tcp_server.socket.getsockname())
2098
2099
#service.interface = tcp_server.socket.getsockname()[3]
2100
3591
logger.info("Now listening on address %r, port %d",
3592
*tcp_server.socket.getsockname())
3593
3594
# service.interface = tcp_server.socket.getsockname()[3]
3595
2101
3596
try:
2102
# From the Avahi example code
2103
try:
2104
service.activate()
2105
except dbus.exceptions.DBusException as error:
2106
logger.critical("DBusException: %s", error)
2107
cleanup()
2108
sys.exit(1)
2109
# End of Avahi example code
2110
2111
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2112
lambda *args, **kwargs:
2113
(tcp_server.handle_request
2114
(*args[2:], **kwargs) or True))
2115
3597
if zeroconf:
3598
# From the Avahi example code
3599
try:
3600
service.activate()
3601
except dbus.exceptions.DBusException as error:
3602
logger.critical("D-Bus Exception", exc_info=error)
3603
cleanup()
3604
sys.exit(1)
3605
# End of Avahi example code
3606
3607
GLib.io_add_watch(
3608
GLib.IOChannel.unix_new(tcp_server.fileno()),
3609
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3610
lambda *args, **kwargs: (tcp_server.handle_request
3611
(*args[2:], **kwargs) or True))
3612
2116
3613
logger.debug("Starting main loop")
2117
3614
main_loop.run()
2118
3615
except AvahiError as error:
2119
logger.critical("AvahiError: %s", error)
3616
logger.critical("Avahi Error", exc_info=error)
2120
3617
cleanup()
2121
3618
sys.exit(1)
2122
3619
except KeyboardInterrupt:
2127
3624
# Must run before the D-Bus bus name gets deregistered
2128
3625
cleanup()
2129
3626
3627
3628
def should_only_run_tests():
3629
parser = argparse.ArgumentParser(add_help=False)
3630
parser.add_argument("--check", action='store_true')
3631
args, unknown_args = parser.parse_known_args()
3632
run_tests = args.check
3633
if run_tests:
3634
# Remove --check argument from sys.argv
3635
sys.argv[1:] = unknown_args
3636
return run_tests
3637
3638
# Add all tests from doctest strings
3639
def load_tests(loader, tests, none):
3640
import doctest
3641
tests.addTests(doctest.DocTestSuite())
3642
return tests
3643
2130
3644
if __name__ == '__main__':
2131
main()
3645
try:
3646
if should_only_run_tests():
3647
# Call using ./mandos --check [--verbose]
3648
unittest.main()
3649
else:
3650
main()
3651
finally:
3652
logging.shutdown()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0