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- Committer: Teddy Hogeborn
- Date: 2021-02-03 08:33:43 UTC
- Revision ID: teddy@recompile.se-20210203083343-spdbhxgd5v8e3lv9
Update copyright year
* debian/copyright: Update copyright year to 2021.
* dracut-module/password-agent.c: - '' -
* dracut-module/password-agent.xml: Update copyright year to 2020.
* intro.xml: - '' -
* plugin-helpers/mandos-client-iprouteadddel.c: Update copyright year
to 2021.
* plugin-runner.c: - '' -
* plugins.d/askpass-fifo.c: - '' -
* plugins.d/mandos-client.c: - '' -
* plugins.d/password-prompt.c: - '' -
* plugins.d/plymouth.c: - '' -
* plugins.d/splashy.c: - '' -
* plugins.d/usplash.c: - '' -
* debian/copyright: Update copyright year to 2021.
* dracut-module/password-agent.c: - '' -
* dracut-module/password-agent.xml: Update copyright year to 2020.
* intro.xml: - '' -
* plugin-helpers/mandos-client-iprouteadddel.c: Update copyright year
to 2021.
* plugin-runner.c: - '' -
* plugins.d/askpass-fifo.c: - '' -
* plugins.d/mandos-client.c: - '' -
* plugins.d/password-prompt.c: - '' -
* plugins.d/plymouth.c: - '' -
* plugins.d/splashy.c: - '' -
* plugins.d/usplash.c: - '' -
- 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 © 2008-2020 Teddy Hogeborn
15
# Copyright © 2008-2020 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
31
32
# Contact the authors at <mandos@recompile.se>.
32
#
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
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
65
74
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
80
import unittest
81
import random
82
import shlex
66
83
67
84
import dbus
68
85
import dbus.service
69
import gobject
70
import avahi
86
import gi
87
from gi.repository import GLib
71
88
from dbus.mainloop.glib import DBusGMainLoop
72
89
import ctypes
73
90
import ctypes.util
74
91
import xml.dom.minidom
75
92
import inspect
76
93
77
try:
94
if sys.version_info.major == 2:
95
__metaclass__ = type
96
str = unicode
97
98
# Add collections.abc.Callable if it does not exist
99
try:
100
collections.abc.Callable
101
except AttributeError:
102
class abc:
103
Callable = collections.Callable
104
collections.abc = abc
105
del abc
106
107
# Add shlex.quote if it does not exist
108
try:
109
shlex.quote
110
except AttributeError:
111
shlex.quote = re.escape
112
113
# Show warnings by default
114
if not sys.warnoptions:
115
import warnings
116
warnings.simplefilter("default")
117
118
# Try to find the value of SO_BINDTODEVICE:
119
try:
120
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
121
# newer, and it is also the most natural place for it:
78
122
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
79
123
except AttributeError:
80
124
try:
125
# This is where SO_BINDTODEVICE was up to and including Python
126
# 2.6, and also 3.2:
81
127
from IN import SO_BINDTODEVICE
82
128
except ImportError:
83
SO_BINDTODEVICE = None
84
85
86
version = "1.3.1"
87
88
#logger = logging.getLogger('mandos')
89
logger = logging.Logger('mandos')
90
syslogger = (logging.handlers.SysLogHandler
91
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
92
address = str("/dev/log")))
93
syslogger.setFormatter(logging.Formatter
94
('Mandos [%(process)d]: %(levelname)s:'
95
' %(message)s'))
96
logger.addHandler(syslogger)
97
98
console = logging.StreamHandler()
99
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
100
' %(levelname)s:'
101
' %(message)s'))
102
logger.addHandler(console)
129
# In Python 2.7 it seems to have been removed entirely.
130
# Try running the C preprocessor:
131
try:
132
cc = subprocess.Popen(["cc", "--language=c", "-E",
133
"/dev/stdin"],
134
stdin=subprocess.PIPE,
135
stdout=subprocess.PIPE)
136
stdout = cc.communicate(
137
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
138
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
139
except (OSError, ValueError, IndexError):
140
# No value found
141
SO_BINDTODEVICE = None
142
143
if sys.version_info < (3, 2):
144
configparser.Configparser = configparser.SafeConfigParser
145
146
version = "1.8.13"
147
stored_state_file = "clients.pickle"
148
149
logger = logging.getLogger()
150
logging.captureWarnings(True) # Show warnings via the logging system
151
syslogger = None
152
153
try:
154
if_nametoindex = ctypes.cdll.LoadLibrary(
155
ctypes.util.find_library("c")).if_nametoindex
156
except (OSError, AttributeError):
157
158
def if_nametoindex(interface):
159
"Get an interface index the hard way, i.e. using fcntl()"
160
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
161
with contextlib.closing(socket.socket()) as s:
162
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
163
struct.pack(b"16s16x", interface))
164
interface_index = struct.unpack("I", ifreq[16:20])[0]
165
return interface_index
166
167
168
def copy_function(func):
169
"""Make a copy of a function"""
170
if sys.version_info.major == 2:
171
return types.FunctionType(func.func_code,
172
func.func_globals,
173
func.func_name,
174
func.func_defaults,
175
func.func_closure)
176
else:
177
return types.FunctionType(func.__code__,
178
func.__globals__,
179
func.__name__,
180
func.__defaults__,
181
func.__closure__)
182
183
184
def initlogger(debug, level=logging.WARNING):
185
"""init logger and add loglevel"""
186
187
global syslogger
188
syslogger = (logging.handlers.SysLogHandler(
189
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
190
address="/dev/log"))
191
syslogger.setFormatter(logging.Formatter
192
('Mandos [%(process)d]: %(levelname)s:'
193
' %(message)s'))
194
logger.addHandler(syslogger)
195
196
if debug:
197
console = logging.StreamHandler()
198
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
199
' [%(process)d]:'
200
' %(levelname)s:'
201
' %(message)s'))
202
logger.addHandler(console)
203
logger.setLevel(level)
204
205
206
class PGPError(Exception):
207
"""Exception if encryption/decryption fails"""
208
pass
209
210
211
class PGPEngine:
212
"""A simple class for OpenPGP symmetric encryption & decryption"""
213
214
def __init__(self):
215
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
216
self.gpg = "gpg"
217
try:
218
output = subprocess.check_output(["gpgconf"])
219
for line in output.splitlines():
220
name, text, path = line.split(b":")
221
if name == b"gpg":
222
self.gpg = path
223
break
224
except OSError as e:
225
if e.errno != errno.ENOENT:
226
raise
227
self.gnupgargs = ['--batch',
228
'--homedir', self.tempdir,
229
'--force-mdc',
230
'--quiet']
231
# Only GPG version 1 has the --no-use-agent option.
232
if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
233
self.gnupgargs.append("--no-use-agent")
234
235
def __enter__(self):
236
return self
237
238
def __exit__(self, exc_type, exc_value, traceback):
239
self._cleanup()
240
return False
241
242
def __del__(self):
243
self._cleanup()
244
245
def _cleanup(self):
246
if self.tempdir is not None:
247
# Delete contents of tempdir
248
for root, dirs, files in os.walk(self.tempdir,
249
topdown=False):
250
for filename in files:
251
os.remove(os.path.join(root, filename))
252
for dirname in dirs:
253
os.rmdir(os.path.join(root, dirname))
254
# Remove tempdir
255
os.rmdir(self.tempdir)
256
self.tempdir = None
257
258
def password_encode(self, password):
259
# Passphrase can not be empty and can not contain newlines or
260
# NUL bytes. So we prefix it and hex encode it.
261
encoded = b"mandos" + binascii.hexlify(password)
262
if len(encoded) > 2048:
263
# GnuPG can't handle long passwords, so encode differently
264
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
265
.replace(b"\n", b"\\n")
266
.replace(b"\0", b"\\x00"))
267
return encoded
268
269
def encrypt(self, data, password):
270
passphrase = self.password_encode(password)
271
with tempfile.NamedTemporaryFile(
272
dir=self.tempdir) as passfile:
273
passfile.write(passphrase)
274
passfile.flush()
275
proc = subprocess.Popen([self.gpg, '--symmetric',
276
'--passphrase-file',
277
passfile.name]
278
+ self.gnupgargs,
279
stdin=subprocess.PIPE,
280
stdout=subprocess.PIPE,
281
stderr=subprocess.PIPE)
282
ciphertext, err = proc.communicate(input=data)
283
if proc.returncode != 0:
284
raise PGPError(err)
285
return ciphertext
286
287
def decrypt(self, data, password):
288
passphrase = self.password_encode(password)
289
with tempfile.NamedTemporaryFile(
290
dir=self.tempdir) as passfile:
291
passfile.write(passphrase)
292
passfile.flush()
293
proc = subprocess.Popen([self.gpg, '--decrypt',
294
'--passphrase-file',
295
passfile.name]
296
+ self.gnupgargs,
297
stdin=subprocess.PIPE,
298
stdout=subprocess.PIPE,
299
stderr=subprocess.PIPE)
300
decrypted_plaintext, err = proc.communicate(input=data)
301
if proc.returncode != 0:
302
raise PGPError(err)
303
return decrypted_plaintext
304
305
306
# Pretend that we have an Avahi module
307
class avahi:
308
"""This isn't so much a class as it is a module-like namespace."""
309
IF_UNSPEC = -1 # avahi-common/address.h
310
PROTO_UNSPEC = -1 # avahi-common/address.h
311
PROTO_INET = 0 # avahi-common/address.h
312
PROTO_INET6 = 1 # avahi-common/address.h
313
DBUS_NAME = "org.freedesktop.Avahi"
314
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
315
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
316
DBUS_PATH_SERVER = "/"
317
318
@staticmethod
319
def string_array_to_txt_array(t):
320
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
321
for s in t), signature="ay")
322
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
323
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
324
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
325
SERVER_INVALID = 0 # avahi-common/defs.h
326
SERVER_REGISTERING = 1 # avahi-common/defs.h
327
SERVER_RUNNING = 2 # avahi-common/defs.h
328
SERVER_COLLISION = 3 # avahi-common/defs.h
329
SERVER_FAILURE = 4 # avahi-common/defs.h
330
103
331
104
332
class AvahiError(Exception):
105
333
def __init__(self, value, *args, **kwargs):
106
334
self.value = value
107
super(AvahiError, self).__init__(value, *args, **kwargs)
108
def __unicode__(self):
109
return unicode(repr(self.value))
335
return super(AvahiError, self).__init__(value, *args,
336
**kwargs)
337
110
338
111
339
class AvahiServiceError(AvahiError):
112
340
pass
113
341
342
114
343
class AvahiGroupError(AvahiError):
115
344
pass
116
345
117
346
118
class AvahiService(object):
347
class AvahiService:
119
348
"""An Avahi (Zeroconf) service.
120
349
121
350
Attributes:
122
351
interface: integer; avahi.IF_UNSPEC or an interface index.
123
352
Used to optionally bind to the specified interface.
124
353
name: string; Example: 'Mandos'
125
354
type: string; Example: '_mandos._tcp'.
126
See <http://www.dns-sd.org/ServiceTypes.html>
355
See <https://www.iana.org/assignments/service-names-port-numbers>
127
356
port: integer; what port to announce
128
357
TXT: list of strings; TXT record for the service
129
358
domain: string; Domain to publish on, default to .local if empty.
135
364
server: D-Bus Server
136
365
bus: dbus.SystemBus()
137
366
"""
138
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
139
servicetype = None, port = None, TXT = None,
140
domain = "", host = "", max_renames = 32768,
141
protocol = avahi.PROTO_UNSPEC, bus = None):
367
368
def __init__(self,
369
interface=avahi.IF_UNSPEC,
370
name=None,
371
servicetype=None,
372
port=None,
373
TXT=None,
374
domain="",
375
host="",
376
max_renames=32768,
377
protocol=avahi.PROTO_UNSPEC,
378
bus=None):
142
379
self.interface = interface
143
380
self.name = name
144
381
self.type = servicetype
153
390
self.server = None
154
391
self.bus = bus
155
392
self.entry_group_state_changed_match = None
156
def rename(self):
393
394
def rename(self, remove=True):
157
395
"""Derived from the Avahi example code"""
158
396
if self.rename_count >= self.max_renames:
159
397
logger.critical("No suitable Zeroconf service name found"
160
398
" after %i retries, exiting.",
161
399
self.rename_count)
162
400
raise AvahiServiceError("Too many renames")
163
self.name = unicode(self.server
164
.GetAlternativeServiceName(self.name))
401
self.name = str(
402
self.server.GetAlternativeServiceName(self.name))
403
self.rename_count += 1
165
404
logger.info("Changing Zeroconf service name to %r ...",
166
405
self.name)
167
syslogger.setFormatter(logging.Formatter
168
('Mandos (%s) [%%(process)d]:'
169
' %%(levelname)s: %%(message)s'
170
% self.name))
171
self.remove()
406
if remove:
407
self.remove()
172
408
try:
173
409
self.add()
174
410
except dbus.exceptions.DBusException as error:
175
logger.critical("DBusException: %s", error)
176
self.cleanup()
177
os._exit(1)
178
self.rename_count += 1
411
if (error.get_dbus_name()
412
== "org.freedesktop.Avahi.CollisionError"):
413
logger.info("Local Zeroconf service name collision.")
414
return self.rename(remove=False)
415
else:
416
logger.critical("D-Bus Exception", exc_info=error)
417
self.cleanup()
418
os._exit(1)
419
179
420
def remove(self):
180
421
"""Derived from the Avahi example code"""
181
422
if self.entry_group_state_changed_match is not None:
183
424
self.entry_group_state_changed_match = None
184
425
if self.group is not None:
185
426
self.group.Reset()
427
186
428
def add(self):
187
429
"""Derived from the Avahi example code"""
188
430
self.remove()
193
435
avahi.DBUS_INTERFACE_ENTRY_GROUP)
194
436
self.entry_group_state_changed_match = (
195
437
self.group.connect_to_signal(
196
'StateChanged', self .entry_group_state_changed))
438
'StateChanged', self.entry_group_state_changed))
197
439
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
198
440
self.name, self.type)
199
441
self.group.AddService(
205
447
dbus.UInt16(self.port),
206
448
avahi.string_array_to_txt_array(self.TXT))
207
449
self.group.Commit()
450
208
451
def entry_group_state_changed(self, state, error):
209
452
"""Derived from the Avahi example code"""
210
453
logger.debug("Avahi entry group state change: %i", state)
211
454
212
455
if state == avahi.ENTRY_GROUP_ESTABLISHED:
213
456
logger.debug("Zeroconf service established.")
214
457
elif state == avahi.ENTRY_GROUP_COLLISION:
216
459
self.rename()
217
460
elif state == avahi.ENTRY_GROUP_FAILURE:
218
461
logger.critical("Avahi: Error in group state changed %s",
219
unicode(error))
220
raise AvahiGroupError("State changed: %s"
221
% unicode(error))
462
str(error))
463
raise AvahiGroupError("State changed: {!s}".format(error))
464
222
465
def cleanup(self):
223
466
"""Derived from the Avahi example code"""
224
467
if self.group is not None:
225
468
try:
226
469
self.group.Free()
227
470
except (dbus.exceptions.UnknownMethodException,
228
dbus.exceptions.DBusException) as e:
471
dbus.exceptions.DBusException):
229
472
pass
230
473
self.group = None
231
474
self.remove()
475
232
476
def server_state_changed(self, state, error=None):
233
477
"""Derived from the Avahi example code"""
234
478
logger.debug("Avahi server state change: %i", state)
235
bad_states = { avahi.SERVER_INVALID:
236
"Zeroconf server invalid",
237
avahi.SERVER_REGISTERING: None,
238
avahi.SERVER_COLLISION:
239
"Zeroconf server name collision",
240
avahi.SERVER_FAILURE:
241
"Zeroconf server failure" }
479
bad_states = {
480
avahi.SERVER_INVALID: "Zeroconf server invalid",
481
avahi.SERVER_REGISTERING: None,
482
avahi.SERVER_COLLISION: "Zeroconf server name collision",
483
avahi.SERVER_FAILURE: "Zeroconf server failure",
484
}
242
485
if state in bad_states:
243
486
if bad_states[state] is not None:
244
487
if error is None:
247
490
logger.error(bad_states[state] + ": %r", error)
248
491
self.cleanup()
249
492
elif state == avahi.SERVER_RUNNING:
250
self.add()
493
try:
494
self.add()
495
except dbus.exceptions.DBusException as error:
496
if (error.get_dbus_name()
497
== "org.freedesktop.Avahi.CollisionError"):
498
logger.info("Local Zeroconf service name"
499
" collision.")
500
return self.rename(remove=False)
501
else:
502
logger.critical("D-Bus Exception", exc_info=error)
503
self.cleanup()
504
os._exit(1)
251
505
else:
252
506
if error is None:
253
507
logger.debug("Unknown state: %r", state)
254
508
else:
255
509
logger.debug("Unknown state: %r: %r", state, error)
510
256
511
def activate(self):
257
512
"""Derived from the Avahi example code"""
258
513
if self.server is None:
262
517
follow_name_owner_changes=True),
263
518
avahi.DBUS_INTERFACE_SERVER)
264
519
self.server.connect_to_signal("StateChanged",
265
self.server_state_changed)
520
self.server_state_changed)
266
521
self.server_state_changed(self.server.GetState())
267
522
268
523
269
def _timedelta_to_milliseconds(td):
270
"Convert a datetime.timedelta() to milliseconds"
271
return ((td.days * 24 * 60 * 60 * 1000)
272
+ (td.seconds * 1000)
273
+ (td.microseconds // 1000))
274
275
class Client(object):
524
class AvahiServiceToSyslog(AvahiService):
525
def rename(self, *args, **kwargs):
526
"""Add the new name to the syslog messages"""
527
ret = super(AvahiServiceToSyslog, self).rename(*args,
528
**kwargs)
529
syslogger.setFormatter(logging.Formatter(
530
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
531
.format(self.name)))
532
return ret
533
534
535
# Pretend that we have a GnuTLS module
536
class gnutls:
537
"""This isn't so much a class as it is a module-like namespace."""
538
539
library = ctypes.util.find_library("gnutls")
540
if library is None:
541
library = ctypes.util.find_library("gnutls-deb0")
542
_library = ctypes.cdll.LoadLibrary(library)
543
del library
544
545
# Unless otherwise indicated, the constants and types below are
546
# all from the gnutls/gnutls.h C header file.
547
548
# Constants
549
E_SUCCESS = 0
550
E_INTERRUPTED = -52
551
E_AGAIN = -28
552
CRT_OPENPGP = 2
553
CRT_RAWPK = 3
554
CLIENT = 2
555
SHUT_RDWR = 0
556
CRD_CERTIFICATE = 1
557
E_NO_CERTIFICATE_FOUND = -49
558
X509_FMT_DER = 0
559
NO_TICKETS = 1<<10
560
ENABLE_RAWPK = 1<<18
561
CTYPE_PEERS = 3
562
KEYID_USE_SHA256 = 1 # gnutls/x509.h
563
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
564
565
# Types
566
class session_int(ctypes.Structure):
567
_fields_ = []
568
session_t = ctypes.POINTER(session_int)
569
570
class certificate_credentials_st(ctypes.Structure):
571
_fields_ = []
572
certificate_credentials_t = ctypes.POINTER(
573
certificate_credentials_st)
574
certificate_type_t = ctypes.c_int
575
576
class datum_t(ctypes.Structure):
577
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
578
('size', ctypes.c_uint)]
579
580
class openpgp_crt_int(ctypes.Structure):
581
_fields_ = []
582
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
583
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
584
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
585
credentials_type_t = ctypes.c_int
586
transport_ptr_t = ctypes.c_void_p
587
close_request_t = ctypes.c_int
588
589
# Exceptions
590
class Error(Exception):
591
def __init__(self, message=None, code=None, args=()):
592
# Default usage is by a message string, but if a return
593
# code is passed, convert it to a string with
594
# gnutls.strerror()
595
self.code = code
596
if message is None and code is not None:
597
message = gnutls.strerror(code)
598
return super(gnutls.Error, self).__init__(
599
message, *args)
600
601
class CertificateSecurityError(Error):
602
pass
603
604
# Classes
605
class Credentials:
606
def __init__(self):
607
self._c_object = gnutls.certificate_credentials_t()
608
gnutls.certificate_allocate_credentials(
609
ctypes.byref(self._c_object))
610
self.type = gnutls.CRD_CERTIFICATE
611
612
def __del__(self):
613
gnutls.certificate_free_credentials(self._c_object)
614
615
class ClientSession:
616
def __init__(self, socket, credentials=None):
617
self._c_object = gnutls.session_t()
618
gnutls_flags = gnutls.CLIENT
619
if gnutls.check_version(b"3.5.6"):
620
gnutls_flags |= gnutls.NO_TICKETS
621
if gnutls.has_rawpk:
622
gnutls_flags |= gnutls.ENABLE_RAWPK
623
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
624
del gnutls_flags
625
gnutls.set_default_priority(self._c_object)
626
gnutls.transport_set_ptr(self._c_object, socket.fileno())
627
gnutls.handshake_set_private_extensions(self._c_object,
628
True)
629
self.socket = socket
630
if credentials is None:
631
credentials = gnutls.Credentials()
632
gnutls.credentials_set(self._c_object, credentials.type,
633
ctypes.cast(credentials._c_object,
634
ctypes.c_void_p))
635
self.credentials = credentials
636
637
def __del__(self):
638
gnutls.deinit(self._c_object)
639
640
def handshake(self):
641
return gnutls.handshake(self._c_object)
642
643
def send(self, data):
644
data = bytes(data)
645
data_len = len(data)
646
while data_len > 0:
647
data_len -= gnutls.record_send(self._c_object,
648
data[-data_len:],
649
data_len)
650
651
def bye(self):
652
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
653
654
# Error handling functions
655
def _error_code(result):
656
"""A function to raise exceptions on errors, suitable
657
for the 'restype' attribute on ctypes functions"""
658
if result >= 0:
659
return result
660
if result == gnutls.E_NO_CERTIFICATE_FOUND:
661
raise gnutls.CertificateSecurityError(code=result)
662
raise gnutls.Error(code=result)
663
664
def _retry_on_error(result, func, arguments):
665
"""A function to retry on some errors, suitable
666
for the 'errcheck' attribute on ctypes functions"""
667
while result < 0:
668
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
669
return _error_code(result)
670
result = func(*arguments)
671
return result
672
673
# Unless otherwise indicated, the function declarations below are
674
# all from the gnutls/gnutls.h C header file.
675
676
# Functions
677
priority_set_direct = _library.gnutls_priority_set_direct
678
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
679
ctypes.POINTER(ctypes.c_char_p)]
680
priority_set_direct.restype = _error_code
681
682
init = _library.gnutls_init
683
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
684
init.restype = _error_code
685
686
set_default_priority = _library.gnutls_set_default_priority
687
set_default_priority.argtypes = [session_t]
688
set_default_priority.restype = _error_code
689
690
record_send = _library.gnutls_record_send
691
record_send.argtypes = [session_t, ctypes.c_void_p,
692
ctypes.c_size_t]
693
record_send.restype = ctypes.c_ssize_t
694
record_send.errcheck = _retry_on_error
695
696
certificate_allocate_credentials = (
697
_library.gnutls_certificate_allocate_credentials)
698
certificate_allocate_credentials.argtypes = [
699
ctypes.POINTER(certificate_credentials_t)]
700
certificate_allocate_credentials.restype = _error_code
701
702
certificate_free_credentials = (
703
_library.gnutls_certificate_free_credentials)
704
certificate_free_credentials.argtypes = [
705
certificate_credentials_t]
706
certificate_free_credentials.restype = None
707
708
handshake_set_private_extensions = (
709
_library.gnutls_handshake_set_private_extensions)
710
handshake_set_private_extensions.argtypes = [session_t,
711
ctypes.c_int]
712
handshake_set_private_extensions.restype = None
713
714
credentials_set = _library.gnutls_credentials_set
715
credentials_set.argtypes = [session_t, credentials_type_t,
716
ctypes.c_void_p]
717
credentials_set.restype = _error_code
718
719
strerror = _library.gnutls_strerror
720
strerror.argtypes = [ctypes.c_int]
721
strerror.restype = ctypes.c_char_p
722
723
certificate_type_get = _library.gnutls_certificate_type_get
724
certificate_type_get.argtypes = [session_t]
725
certificate_type_get.restype = _error_code
726
727
certificate_get_peers = _library.gnutls_certificate_get_peers
728
certificate_get_peers.argtypes = [session_t,
729
ctypes.POINTER(ctypes.c_uint)]
730
certificate_get_peers.restype = ctypes.POINTER(datum_t)
731
732
global_set_log_level = _library.gnutls_global_set_log_level
733
global_set_log_level.argtypes = [ctypes.c_int]
734
global_set_log_level.restype = None
735
736
global_set_log_function = _library.gnutls_global_set_log_function
737
global_set_log_function.argtypes = [log_func]
738
global_set_log_function.restype = None
739
740
deinit = _library.gnutls_deinit
741
deinit.argtypes = [session_t]
742
deinit.restype = None
743
744
handshake = _library.gnutls_handshake
745
handshake.argtypes = [session_t]
746
handshake.restype = _error_code
747
handshake.errcheck = _retry_on_error
748
749
transport_set_ptr = _library.gnutls_transport_set_ptr
750
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
751
transport_set_ptr.restype = None
752
753
bye = _library.gnutls_bye
754
bye.argtypes = [session_t, close_request_t]
755
bye.restype = _error_code
756
bye.errcheck = _retry_on_error
757
758
check_version = _library.gnutls_check_version
759
check_version.argtypes = [ctypes.c_char_p]
760
check_version.restype = ctypes.c_char_p
761
762
_need_version = b"3.3.0"
763
if check_version(_need_version) is None:
764
raise self.Error("Needs GnuTLS {} or later"
765
.format(_need_version))
766
767
_tls_rawpk_version = b"3.6.6"
768
has_rawpk = bool(check_version(_tls_rawpk_version))
769
770
if has_rawpk:
771
# Types
772
class pubkey_st(ctypes.Structure):
773
_fields = []
774
pubkey_t = ctypes.POINTER(pubkey_st)
775
776
x509_crt_fmt_t = ctypes.c_int
777
778
# All the function declarations below are from
779
# gnutls/abstract.h
780
pubkey_init = _library.gnutls_pubkey_init
781
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
782
pubkey_init.restype = _error_code
783
784
pubkey_import = _library.gnutls_pubkey_import
785
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
786
x509_crt_fmt_t]
787
pubkey_import.restype = _error_code
788
789
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
790
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
791
ctypes.POINTER(ctypes.c_ubyte),
792
ctypes.POINTER(ctypes.c_size_t)]
793
pubkey_get_key_id.restype = _error_code
794
795
pubkey_deinit = _library.gnutls_pubkey_deinit
796
pubkey_deinit.argtypes = [pubkey_t]
797
pubkey_deinit.restype = None
798
else:
799
# All the function declarations below are from
800
# gnutls/openpgp.h
801
802
openpgp_crt_init = _library.gnutls_openpgp_crt_init
803
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
804
openpgp_crt_init.restype = _error_code
805
806
openpgp_crt_import = _library.gnutls_openpgp_crt_import
807
openpgp_crt_import.argtypes = [openpgp_crt_t,
808
ctypes.POINTER(datum_t),
809
openpgp_crt_fmt_t]
810
openpgp_crt_import.restype = _error_code
811
812
openpgp_crt_verify_self = \
813
_library.gnutls_openpgp_crt_verify_self
814
openpgp_crt_verify_self.argtypes = [
815
openpgp_crt_t,
816
ctypes.c_uint,
817
ctypes.POINTER(ctypes.c_uint),
818
]
819
openpgp_crt_verify_self.restype = _error_code
820
821
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
822
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
823
openpgp_crt_deinit.restype = None
824
825
openpgp_crt_get_fingerprint = (
826
_library.gnutls_openpgp_crt_get_fingerprint)
827
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
828
ctypes.c_void_p,
829
ctypes.POINTER(
830
ctypes.c_size_t)]
831
openpgp_crt_get_fingerprint.restype = _error_code
832
833
if check_version(b"3.6.4"):
834
certificate_type_get2 = _library.gnutls_certificate_type_get2
835
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
836
certificate_type_get2.restype = _error_code
837
838
# Remove non-public functions
839
del _error_code, _retry_on_error
840
841
842
def call_pipe(connection, # : multiprocessing.Connection
843
func, *args, **kwargs):
844
"""This function is meant to be called by multiprocessing.Process
845
846
This function runs func(*args, **kwargs), and writes the resulting
847
return value on the provided multiprocessing.Connection.
848
"""
849
connection.send(func(*args, **kwargs))
850
connection.close()
851
852
853
class Client:
276
854
"""A representation of a client host served by this server.
277
855
278
856
Attributes:
279
_approved: bool(); 'None' if not yet approved/disapproved
857
approved: bool(); 'None' if not yet approved/disapproved
280
858
approval_delay: datetime.timedelta(); Time to wait for approval
281
859
approval_duration: datetime.timedelta(); Duration of one approval
282
checker: subprocess.Popen(); a running checker process used
283
to see if the client lives.
284
'None' if no process is running.
285
checker_callback_tag: a gobject event source tag, or None
860
checker: multiprocessing.Process(); a running checker process used
861
to see if the client lives. 'None' if no process is
862
running.
863
checker_callback_tag: a GLib event source tag, or None
286
864
checker_command: string; External command which is run to check
287
865
if client lives. %() expansions are done at
288
866
runtime with vars(self) as dict, so that for
289
867
instance %(name)s can be used in the command.
290
checker_initiator_tag: a gobject event source tag, or None
868
checker_initiator_tag: a GLib event source tag, or None
291
869
created: datetime.datetime(); (UTC) object creation
870
client_structure: Object describing what attributes a client has
871
and is used for storing the client at exit
292
872
current_checker_command: string; current running checker_command
293
disable_hook: If set, called by disable() as disable_hook(self)
294
disable_initiator_tag: a gobject event source tag, or None
873
disable_initiator_tag: a GLib event source tag, or None
295
874
enabled: bool()
296
875
fingerprint: string (40 or 32 hexadecimal digits); used to
297
uniquely identify the client
876
uniquely identify an OpenPGP client
877
key_id: string (64 hexadecimal digits); used to uniquely identify
878
a client using raw public keys
298
879
host: string; available for use by the checker command
299
880
interval: datetime.timedelta(); How often to start a new checker
300
881
last_approval_request: datetime.datetime(); (UTC) or None
301
882
last_checked_ok: datetime.datetime(); (UTC) or None
302
last_enabled: datetime.datetime(); (UTC)
883
last_checker_status: integer between 0 and 255 reflecting exit
884
status of last checker. -1 reflects crashed
885
checker, -2 means no checker completed yet.
886
last_checker_signal: The signal which killed the last checker, if
887
last_checker_status is -1
888
last_enabled: datetime.datetime(); (UTC) or None
303
889
name: string; from the config file, used in log messages and
304
890
D-Bus identifiers
305
891
secret: bytestring; sent verbatim (over TLS) to client
306
892
timeout: datetime.timedelta(); How long from last_checked_ok
307
893
until this client is disabled
308
extended_timeout: extra long timeout when password has been sent
894
extended_timeout: extra long timeout when secret has been sent
309
895
runtime_expansions: Allowed attributes for runtime expansion.
310
896
expires: datetime.datetime(); time (UTC) when a client will be
311
897
disabled, or None
898
server_settings: The server_settings dict from main()
312
899
"""
313
900
314
901
runtime_expansions = ("approval_delay", "approval_duration",
315
"created", "enabled", "fingerprint",
316
"host", "interval", "last_checked_ok",
902
"created", "enabled", "expires", "key_id",
903
"fingerprint", "host", "interval",
904
"last_approval_request", "last_checked_ok",
317
905
"last_enabled", "name", "timeout")
318
319
def timeout_milliseconds(self):
320
"Return the 'timeout' attribute in milliseconds"
321
return _timedelta_to_milliseconds(self.timeout)
322
323
def extended_timeout_milliseconds(self):
324
"Return the 'extended_timeout' attribute in milliseconds"
325
return _timedelta_to_milliseconds(self.extended_timeout)
326
327
def interval_milliseconds(self):
328
"Return the 'interval' attribute in milliseconds"
329
return _timedelta_to_milliseconds(self.interval)
330
331
def approval_delay_milliseconds(self):
332
return _timedelta_to_milliseconds(self.approval_delay)
333
334
def __init__(self, name = None, disable_hook=None, config=None):
335
"""Note: the 'checker' key in 'config' sets the
336
'checker_command' attribute and *not* the 'checker'
337
attribute."""
906
client_defaults = {
907
"timeout": "PT5M",
908
"extended_timeout": "PT15M",
909
"interval": "PT2M",
910
"checker": "fping -q -- %%(host)s",
911
"host": "",
912
"approval_delay": "PT0S",
913
"approval_duration": "PT1S",
914
"approved_by_default": "True",
915
"enabled": "True",
916
}
917
918
@staticmethod
919
def config_parser(config):
920
"""Construct a new dict of client settings of this form:
921
{ client_name: {setting_name: value, ...}, ...}
922
with exceptions for any special settings as defined above.
923
NOTE: Must be a pure function. Must return the same result
924
value given the same arguments.
925
"""
926
settings = {}
927
for client_name in config.sections():
928
section = dict(config.items(client_name))
929
client = settings[client_name] = {}
930
931
client["host"] = section["host"]
932
# Reformat values from string types to Python types
933
client["approved_by_default"] = config.getboolean(
934
client_name, "approved_by_default")
935
client["enabled"] = config.getboolean(client_name,
936
"enabled")
937
938
# Uppercase and remove spaces from key_id and fingerprint
939
# for later comparison purposes with return value from the
940
# key_id() and fingerprint() functions
941
client["key_id"] = (section.get("key_id", "").upper()
942
.replace(" ", ""))
943
client["fingerprint"] = (section["fingerprint"].upper()
944
.replace(" ", ""))
945
if "secret" in section:
946
client["secret"] = codecs.decode(section["secret"]
947
.encode("utf-8"),
948
"base64")
949
elif "secfile" in section:
950
with open(os.path.expanduser(os.path.expandvars
951
(section["secfile"])),
952
"rb") as secfile:
953
client["secret"] = secfile.read()
954
else:
955
raise TypeError("No secret or secfile for section {}"
956
.format(section))
957
client["timeout"] = string_to_delta(section["timeout"])
958
client["extended_timeout"] = string_to_delta(
959
section["extended_timeout"])
960
client["interval"] = string_to_delta(section["interval"])
961
client["approval_delay"] = string_to_delta(
962
section["approval_delay"])
963
client["approval_duration"] = string_to_delta(
964
section["approval_duration"])
965
client["checker_command"] = section["checker"]
966
client["last_approval_request"] = None
967
client["last_checked_ok"] = None
968
client["last_checker_status"] = -2
969
970
return settings
971
972
def __init__(self, settings, name=None, server_settings=None):
338
973
self.name = name
339
if config is None:
340
config = {}
974
if server_settings is None:
975
server_settings = {}
976
self.server_settings = server_settings
977
# adding all client settings
978
for setting, value in settings.items():
979
setattr(self, setting, value)
980
981
if self.enabled:
982
if not hasattr(self, "last_enabled"):
983
self.last_enabled = datetime.datetime.utcnow()
984
if not hasattr(self, "expires"):
985
self.expires = (datetime.datetime.utcnow()
986
+ self.timeout)
987
else:
988
self.last_enabled = None
989
self.expires = None
990
341
991
logger.debug("Creating client %r", self.name)
342
# Uppercase and remove spaces from fingerprint for later
343
# comparison purposes with return value from the fingerprint()
344
# function
345
self.fingerprint = (config["fingerprint"].upper()
346
.replace(" ", ""))
992
logger.debug(" Key ID: %s", self.key_id)
347
993
logger.debug(" Fingerprint: %s", self.fingerprint)
348
if "secret" in config:
349
self.secret = config["secret"].decode("base64")
350
elif "secfile" in config:
351
with open(os.path.expanduser(os.path.expandvars
352
(config["secfile"])),
353
"rb") as secfile:
354
self.secret = secfile.read()
355
else:
356
raise TypeError("No secret or secfile for client %s"
357
% self.name)
358
self.host = config.get("host", "")
359
self.created = datetime.datetime.utcnow()
360
self.enabled = False
361
self.last_approval_request = None
362
self.last_enabled = None
363
self.last_checked_ok = None
364
self.timeout = string_to_delta(config["timeout"])
365
self.extended_timeout = string_to_delta(config
366
["extended_timeout"])
367
self.interval = string_to_delta(config["interval"])
368
self.disable_hook = disable_hook
994
self.created = settings.get("created",
995
datetime.datetime.utcnow())
996
997
# attributes specific for this server instance
369
998
self.checker = None
370
999
self.checker_initiator_tag = None
371
1000
self.disable_initiator_tag = None
372
self.expires = None
373
1001
self.checker_callback_tag = None
374
self.checker_command = config["checker"]
375
1002
self.current_checker_command = None
376
self.last_connect = None
377
self._approved = None
378
self.approved_by_default = config.get("approved_by_default",
379
True)
1003
self.approved = None
380
1004
self.approvals_pending = 0
381
self.approval_delay = string_to_delta(
382
config["approval_delay"])
383
self.approval_duration = string_to_delta(
384
config["approval_duration"])
385
self.changedstate = (multiprocessing_manager
386
.Condition(multiprocessing_manager
387
.Lock()))
388
1005
self.changedstate = multiprocessing_manager.Condition(
1006
multiprocessing_manager.Lock())
1007
self.client_structure = [attr
1008
for attr in self.__dict__.keys()
1009
if not attr.startswith("_")]
1010
self.client_structure.append("client_structure")
1011
1012
for name, t in inspect.getmembers(
1013
type(self), lambda obj: isinstance(obj, property)):
1014
if not name.startswith("_"):
1015
self.client_structure.append(name)
1016
1017
# Send notice to process children that client state has changed
389
1018
def send_changedstate(self):
390
self.changedstate.acquire()
391
self.changedstate.notify_all()
392
self.changedstate.release()
393
1019
with self.changedstate:
1020
self.changedstate.notify_all()
1021
394
1022
def enable(self):
395
1023
"""Start this client's checker and timeout hooks"""
396
1024
if getattr(self, "enabled", False):
397
1025
# Already enabled
398
1026
return
399
self.send_changedstate()
400
# Schedule a new checker to be started an 'interval' from now,
401
# and every interval from then on.
402
self.checker_initiator_tag = (gobject.timeout_add
403
(self.interval_milliseconds(),
404
self.start_checker))
405
# Schedule a disable() when 'timeout' has passed
406
1027
self.expires = datetime.datetime.utcnow() + self.timeout
407
self.disable_initiator_tag = (gobject.timeout_add
408
(self.timeout_milliseconds(),
409
self.disable))
410
1028
self.enabled = True
411
1029
self.last_enabled = datetime.datetime.utcnow()
412
# Also start a new checker *right now*.
413
self.start_checker()
414
1030
self.init_checker()
1031
self.send_changedstate()
1032
415
1033
def disable(self, quiet=True):
416
1034
"""Disable this client."""
417
1035
if not getattr(self, "enabled", False):
418
1036
return False
419
1037
if not quiet:
420
self.send_changedstate()
421
if not quiet:
422
1038
logger.info("Disabling client %s", self.name)
423
if getattr(self, "disable_initiator_tag", False):
424
gobject.source_remove(self.disable_initiator_tag)
1039
if getattr(self, "disable_initiator_tag", None) is not None:
1040
GLib.source_remove(self.disable_initiator_tag)
425
1041
self.disable_initiator_tag = None
426
1042
self.expires = None
427
if getattr(self, "checker_initiator_tag", False):
428
gobject.source_remove(self.checker_initiator_tag)
1043
if getattr(self, "checker_initiator_tag", None) is not None:
1044
GLib.source_remove(self.checker_initiator_tag)
429
1045
self.checker_initiator_tag = None
430
1046
self.stop_checker()
431
if self.disable_hook:
432
self.disable_hook(self)
433
1047
self.enabled = False
434
# Do not run this again if called by a gobject.timeout_add
1048
if not quiet:
1049
self.send_changedstate()
1050
# Do not run this again if called by a GLib.timeout_add
435
1051
return False
436
1052
437
1053
def __del__(self):
438
self.disable_hook = None
439
1054
self.disable()
440
441
def checker_callback(self, pid, condition, command):
1055
1056
def init_checker(self):
1057
# Schedule a new checker to be started an 'interval' from now,
1058
# and every interval from then on.
1059
if self.checker_initiator_tag is not None:
1060
GLib.source_remove(self.checker_initiator_tag)
1061
self.checker_initiator_tag = GLib.timeout_add(
1062
random.randrange(int(self.interval.total_seconds() * 1000
1063
+ 1)),
1064
self.start_checker)
1065
# Schedule a disable() when 'timeout' has passed
1066
if self.disable_initiator_tag is not None:
1067
GLib.source_remove(self.disable_initiator_tag)
1068
self.disable_initiator_tag = GLib.timeout_add(
1069
int(self.timeout.total_seconds() * 1000), self.disable)
1070
# Also start a new checker *right now*.
1071
self.start_checker()
1072
1073
def checker_callback(self, source, condition, connection,
1074
command):
442
1075
"""The checker has completed, so take appropriate actions."""
1076
# Read return code from connection (see call_pipe)
1077
returncode = connection.recv()
1078
connection.close()
1079
if self.checker is not None:
1080
self.checker.join()
443
1081
self.checker_callback_tag = None
444
1082
self.checker = None
445
if os.WIFEXITED(condition):
446
exitstatus = os.WEXITSTATUS(condition)
447
if exitstatus == 0:
1083
1084
if returncode >= 0:
1085
self.last_checker_status = returncode
1086
self.last_checker_signal = None
1087
if self.last_checker_status == 0:
448
1088
logger.info("Checker for %(name)s succeeded",
449
1089
vars(self))
450
1090
self.checked_ok()
451
1091
else:
452
logger.info("Checker for %(name)s failed",
453
vars(self))
1092
logger.info("Checker for %(name)s failed", vars(self))
454
1093
else:
1094
self.last_checker_status = -1
1095
self.last_checker_signal = -returncode
455
1096
logger.warning("Checker for %(name)s crashed?",
456
1097
vars(self))
457
458
def checked_ok(self, timeout=None):
459
"""Bump up the timeout for this client.
460
461
This should only be called when the client has been seen,
462
alive and well.
463
"""
1098
return False
1099
1100
def checked_ok(self):
1101
"""Assert that the client has been seen, alive and well."""
1102
self.last_checked_ok = datetime.datetime.utcnow()
1103
self.last_checker_status = 0
1104
self.last_checker_signal = None
1105
self.bump_timeout()
1106
1107
def bump_timeout(self, timeout=None):
1108
"""Bump up the timeout for this client."""
464
1109
if timeout is None:
465
1110
timeout = self.timeout
466
self.last_checked_ok = datetime.datetime.utcnow()
467
gobject.source_remove(self.disable_initiator_tag)
468
self.disable_initiator_tag = (gobject.timeout_add
469
(_timedelta_to_milliseconds
470
(timeout), self.disable))
471
self.expires = datetime.datetime.utcnow() + timeout
472
1111
if self.disable_initiator_tag is not None:
1112
GLib.source_remove(self.disable_initiator_tag)
1113
self.disable_initiator_tag = None
1114
if getattr(self, "enabled", False):
1115
self.disable_initiator_tag = GLib.timeout_add(
1116
int(timeout.total_seconds() * 1000), self.disable)
1117
self.expires = datetime.datetime.utcnow() + timeout
1118
473
1119
def need_approval(self):
474
1120
self.last_approval_request = datetime.datetime.utcnow()
475
1121
476
1122
def start_checker(self):
477
1123
"""Start a new checker subprocess if one is not running.
478
1124
479
1125
If a checker already exists, leave it running and do
480
1126
nothing."""
481
1127
# The reason for not killing a running checker is that if we
482
# did that, then if a checker (for some reason) started
483
# running slowly and taking more than 'interval' time, the
484
# client would inevitably timeout, since no checker would get
485
# a chance to run to completion. If we instead leave running
1128
# did that, and if a checker (for some reason) started running
1129
# slowly and taking more than 'interval' time, then the client
1130
# would inevitably timeout, since no checker would get a
1131
# chance to run to completion. If we instead leave running
486
1132
# checkers alone, the checker would have to take more time
487
1133
# than 'timeout' for the client to be disabled, which is as it
488
1134
# should be.
489
490
# If a checker exists, make sure it is not a zombie
491
try:
492
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
493
except (AttributeError, OSError) as error:
494
if (isinstance(error, OSError)
495
and error.errno != errno.ECHILD):
496
raise error
497
else:
498
if pid:
499
logger.warning("Checker was a zombie")
500
gobject.source_remove(self.checker_callback_tag)
501
self.checker_callback(pid, status,
502
self.current_checker_command)
1135
1136
if self.checker is not None and not self.checker.is_alive():
1137
logger.warning("Checker was not alive; joining")
1138
self.checker.join()
1139
self.checker = None
503
1140
# Start a new checker if needed
504
1141
if self.checker is None:
1142
# Escape attributes for the shell
1143
escaped_attrs = {
1144
attr: shlex.quote(str(getattr(self, attr)))
1145
for attr in self.runtime_expansions}
505
1146
try:
506
# In case checker_command has exactly one % operator
507
command = self.checker_command % self.host
508
except TypeError:
509
# Escape attributes for the shell
510
escaped_attrs = dict(
511
(attr,
512
re.escape(unicode(str(getattr(self, attr, "")),
513
errors=
514
'replace')))
515
for attr in
516
self.runtime_expansions)
517
518
try:
519
command = self.checker_command % escaped_attrs
520
except TypeError as error:
521
logger.error('Could not format string "%s":'
522
' %s', self.checker_command, error)
523
return True # Try again later
1147
command = self.checker_command % escaped_attrs
1148
except TypeError as error:
1149
logger.error('Could not format string "%s"',
1150
self.checker_command,
1151
exc_info=error)
1152
return True # Try again later
524
1153
self.current_checker_command = command
525
try:
526
logger.info("Starting checker %r for %s",
527
command, self.name)
528
# We don't need to redirect stdout and stderr, since
529
# in normal mode, that is already done by daemon(),
530
# and in debug mode we don't want to. (Stdin is
531
# always replaced by /dev/null.)
532
self.checker = subprocess.Popen(command,
533
close_fds=True,
534
shell=True, cwd="/")
535
self.checker_callback_tag = (gobject.child_watch_add
536
(self.checker.pid,
537
self.checker_callback,
538
data=command))
539
# The checker may have completed before the gobject
540
# watch was added. Check for this.
541
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
542
if pid:
543
gobject.source_remove(self.checker_callback_tag)
544
self.checker_callback(pid, status, command)
545
except OSError as error:
546
logger.error("Failed to start subprocess: %s",
547
error)
548
# Re-run this periodically if run by gobject.timeout_add
1154
logger.info("Starting checker %r for %s", command,
1155
self.name)
1156
# We don't need to redirect stdout and stderr, since
1157
# in normal mode, that is already done by daemon(),
1158
# and in debug mode we don't want to. (Stdin is
1159
# always replaced by /dev/null.)
1160
# The exception is when not debugging but nevertheless
1161
# running in the foreground; use the previously
1162
# created wnull.
1163
popen_args = {"close_fds": True,
1164
"shell": True,
1165
"cwd": "/"}
1166
if (not self.server_settings["debug"]
1167
and self.server_settings["foreground"]):
1168
popen_args.update({"stdout": wnull,
1169
"stderr": wnull})
1170
pipe = multiprocessing.Pipe(duplex=False)
1171
self.checker = multiprocessing.Process(
1172
target=call_pipe,
1173
args=(pipe[1], subprocess.call, command),
1174
kwargs=popen_args)
1175
self.checker.start()
1176
self.checker_callback_tag = GLib.io_add_watch(
1177
GLib.IOChannel.unix_new(pipe[0].fileno()),
1178
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1179
self.checker_callback, pipe[0], command)
1180
# Re-run this periodically if run by GLib.timeout_add
549
1181
return True
550
1182
551
1183
def stop_checker(self):
552
1184
"""Force the checker process, if any, to stop."""
553
1185
if self.checker_callback_tag:
554
gobject.source_remove(self.checker_callback_tag)
1186
GLib.source_remove(self.checker_callback_tag)
555
1187
self.checker_callback_tag = None
556
1188
if getattr(self, "checker", None) is None:
557
1189
return
558
1190
logger.debug("Stopping checker for %(name)s", vars(self))
559
try:
560
os.kill(self.checker.pid, signal.SIGTERM)
561
#time.sleep(0.5)
562
#if self.checker.poll() is None:
563
# os.kill(self.checker.pid, signal.SIGKILL)
564
except OSError as error:
565
if error.errno != errno.ESRCH: # No such process
566
raise
1191
self.checker.terminate()
567
1192
self.checker = None
568
1193
569
1194
570
def dbus_service_property(dbus_interface, signature="v",
571
access="readwrite", byte_arrays=False):
1195
def dbus_service_property(dbus_interface,
1196
signature="v",
1197
access="readwrite",
1198
byte_arrays=False):
572
1199
"""Decorators for marking methods of a DBusObjectWithProperties to
573
1200
become properties on the D-Bus.
574
1201
575
1202
The decorated method will be called with no arguments by "Get"
576
1203
and with one argument by "Set".
577
1204
578
1205
The parameters, where they are supported, are the same as
579
1206
dbus.service.method, except there is only "signature", since the
580
1207
type from Get() and the type sent to Set() is the same.
583
1210
# "Set" method, so we fail early here:
584
1211
if byte_arrays and signature != "ay":
585
1212
raise ValueError("Byte arrays not supported for non-'ay'"
586
" signature %r" % signature)
1213
" signature {!r}".format(signature))
1214
587
1215
def decorator(func):
588
1216
func._dbus_is_property = True
589
1217
func._dbus_interface = dbus_interface
592
1220
func._dbus_name = func.__name__
593
1221
if func._dbus_name.endswith("_dbus_property"):
594
1222
func._dbus_name = func._dbus_name[:-14]
595
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
596
return func
1223
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1224
return func
1225
1226
return decorator
1227
1228
1229
def dbus_interface_annotations(dbus_interface):
1230
"""Decorator for marking functions returning interface annotations
1231
1232
Usage:
1233
1234
@dbus_interface_annotations("org.example.Interface")
1235
def _foo(self): # Function name does not matter
1236
return {"org.freedesktop.DBus.Deprecated": "true",
1237
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1238
"false"}
1239
"""
1240
1241
def decorator(func):
1242
func._dbus_is_interface = True
1243
func._dbus_interface = dbus_interface
1244
func._dbus_name = dbus_interface
1245
return func
1246
1247
return decorator
1248
1249
1250
def dbus_annotations(annotations):
1251
"""Decorator to annotate D-Bus methods, signals or properties
1252
Usage:
1253
1254
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1255
"org.freedesktop.DBus.Property."
1256
"EmitsChangedSignal": "false"})
1257
@dbus_service_property("org.example.Interface", signature="b",
1258
access="r")
1259
def Property_dbus_property(self):
1260
return dbus.Boolean(False)
1261
1262
See also the DBusObjectWithAnnotations class.
1263
"""
1264
1265
def decorator(func):
1266
func._dbus_annotations = annotations
1267
return func
1268
597
1269
return decorator
598
1270
599
1271
600
1272
class DBusPropertyException(dbus.exceptions.DBusException):
601
1273
"""A base class for D-Bus property-related exceptions
602
1274
"""
603
def __unicode__(self):
604
return unicode(str(self))
1275
pass
605
1276
606
1277
607
1278
class DBusPropertyAccessException(DBusPropertyException):
616
1287
pass
617
1288
618
1289
619
class DBusObjectWithProperties(dbus.service.Object):
1290
class DBusObjectWithAnnotations(dbus.service.Object):
1291
"""A D-Bus object with annotations.
1292
1293
Classes inheriting from this can use the dbus_annotations
1294
decorator to add annotations to methods or signals.
1295
"""
1296
1297
@staticmethod
1298
def _is_dbus_thing(thing):
1299
"""Returns a function testing if an attribute is a D-Bus thing
1300
1301
If called like _is_dbus_thing("method") it returns a function
1302
suitable for use as predicate to inspect.getmembers().
1303
"""
1304
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1305
False)
1306
1307
def _get_all_dbus_things(self, thing):
1308
"""Returns a generator of (name, attribute) pairs
1309
"""
1310
return ((getattr(athing.__get__(self), "_dbus_name", name),
1311
athing.__get__(self))
1312
for cls in self.__class__.__mro__
1313
for name, athing in
1314
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1315
1316
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1317
out_signature="s",
1318
path_keyword='object_path',
1319
connection_keyword='connection')
1320
def Introspect(self, object_path, connection):
1321
"""Overloading of standard D-Bus method.
1322
1323
Inserts annotation tags on methods and signals.
1324
"""
1325
xmlstring = dbus.service.Object.Introspect(self, object_path,
1326
connection)
1327
try:
1328
document = xml.dom.minidom.parseString(xmlstring)
1329
1330
for if_tag in document.getElementsByTagName("interface"):
1331
# Add annotation tags
1332
for typ in ("method", "signal"):
1333
for tag in if_tag.getElementsByTagName(typ):
1334
annots = dict()
1335
for name, prop in (self.
1336
_get_all_dbus_things(typ)):
1337
if (name == tag.getAttribute("name")
1338
and prop._dbus_interface
1339
== if_tag.getAttribute("name")):
1340
annots.update(getattr(
1341
prop, "_dbus_annotations", {}))
1342
for name, value in annots.items():
1343
ann_tag = document.createElement(
1344
"annotation")
1345
ann_tag.setAttribute("name", name)
1346
ann_tag.setAttribute("value", value)
1347
tag.appendChild(ann_tag)
1348
# Add interface annotation tags
1349
for annotation, value in dict(
1350
itertools.chain.from_iterable(
1351
annotations().items()
1352
for name, annotations
1353
in self._get_all_dbus_things("interface")
1354
if name == if_tag.getAttribute("name")
1355
)).items():
1356
ann_tag = document.createElement("annotation")
1357
ann_tag.setAttribute("name", annotation)
1358
ann_tag.setAttribute("value", value)
1359
if_tag.appendChild(ann_tag)
1360
# Fix argument name for the Introspect method itself
1361
if (if_tag.getAttribute("name")
1362
== dbus.INTROSPECTABLE_IFACE):
1363
for cn in if_tag.getElementsByTagName("method"):
1364
if cn.getAttribute("name") == "Introspect":
1365
for arg in cn.getElementsByTagName("arg"):
1366
if (arg.getAttribute("direction")
1367
== "out"):
1368
arg.setAttribute("name",
1369
"xml_data")
1370
xmlstring = document.toxml("utf-8")
1371
document.unlink()
1372
except (AttributeError, xml.dom.DOMException,
1373
xml.parsers.expat.ExpatError) as error:
1374
logger.error("Failed to override Introspection method",
1375
exc_info=error)
1376
return xmlstring
1377
1378
1379
class DBusObjectWithProperties(DBusObjectWithAnnotations):
620
1380
"""A D-Bus object with properties.
621
1381
622
1382
Classes inheriting from this can use the dbus_service_property
623
1383
decorator to expose methods as D-Bus properties. It exposes the
624
1384
standard Get(), Set(), and GetAll() methods on the D-Bus.
625
1385
"""
626
627
@staticmethod
628
def _is_dbus_property(obj):
629
return getattr(obj, "_dbus_is_property", False)
630
631
def _get_all_dbus_properties(self):
632
"""Returns a generator of (name, attribute) pairs
633
"""
634
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
635
for cls in self.__class__.__mro__
636
for name, prop in
637
inspect.getmembers(cls, self._is_dbus_property))
638
1386
639
1387
def _get_dbus_property(self, interface_name, property_name):
640
1388
"""Returns a bound method if one exists which is a D-Bus
641
1389
property with the specified name and interface.
642
1390
"""
643
for cls in self.__class__.__mro__:
644
for name, value in (inspect.getmembers
645
(cls, self._is_dbus_property)):
1391
for cls in self.__class__.__mro__:
1392
for name, value in inspect.getmembers(
1393
cls, self._is_dbus_thing("property")):
646
1394
if (value._dbus_name == property_name
647
1395
and value._dbus_interface == interface_name):
648
1396
return value.__get__(self)
649
1397
650
1398
# No such property
651
raise DBusPropertyNotFound(self.dbus_object_path + ":"
652
+ interface_name + "."
653
+ property_name)
654
655
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1399
raise DBusPropertyNotFound("{}:{}.{}".format(
1400
self.dbus_object_path, interface_name, property_name))
1401
1402
@classmethod
1403
def _get_all_interface_names(cls):
1404
"""Get a sequence of all interfaces supported by an object"""
1405
return (name for name in set(getattr(getattr(x, attr),
1406
"_dbus_interface", None)
1407
for x in (inspect.getmro(cls))
1408
for attr in dir(x))
1409
if name is not None)
1410
1411
@dbus.service.method(dbus.PROPERTIES_IFACE,
1412
in_signature="ss",
656
1413
out_signature="v")
657
1414
def Get(self, interface_name, property_name):
658
1415
"""Standard D-Bus property Get() method, see D-Bus standard.
664
1421
if not hasattr(value, "variant_level"):
665
1422
return value
666
1423
return type(value)(value, variant_level=value.variant_level+1)
667
1424
668
1425
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
669
1426
def Set(self, interface_name, property_name, value):
670
1427
"""Standard D-Bus property Set() method, see D-Bus standard.
676
1433
# The byte_arrays option is not supported yet on
677
1434
# signatures other than "ay".
678
1435
if prop._dbus_signature != "ay":
679
raise ValueError
680
value = dbus.ByteArray(''.join(unichr(byte)
681
for byte in value))
1436
raise ValueError("Byte arrays not supported for non-"
1437
"'ay' signature {!r}"
1438
.format(prop._dbus_signature))
1439
value = dbus.ByteArray(bytes(value))
682
1440
prop(value)
683
684
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1441
1442
@dbus.service.method(dbus.PROPERTIES_IFACE,
1443
in_signature="s",
685
1444
out_signature="a{sv}")
686
1445
def GetAll(self, interface_name):
687
1446
"""Standard D-Bus property GetAll() method, see D-Bus
688
1447
standard.
689
1448
690
1449
Note: Will not include properties with access="write".
691
1450
"""
692
all = {}
693
for name, prop in self._get_all_dbus_properties():
1451
properties = {}
1452
for name, prop in self._get_all_dbus_things("property"):
694
1453
if (interface_name
695
1454
and interface_name != prop._dbus_interface):
696
1455
# Interface non-empty but did not match
700
1459
continue
701
1460
value = prop()
702
1461
if not hasattr(value, "variant_level"):
703
all[name] = value
1462
properties[name] = value
704
1463
continue
705
all[name] = type(value)(value, variant_level=
706
value.variant_level+1)
707
return dbus.Dictionary(all, signature="sv")
708
1464
properties[name] = type(value)(
1465
value, variant_level=value.variant_level + 1)
1466
return dbus.Dictionary(properties, signature="sv")
1467
1468
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1469
def PropertiesChanged(self, interface_name, changed_properties,
1470
invalidated_properties):
1471
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1472
standard.
1473
"""
1474
pass
1475
709
1476
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
710
1477
out_signature="s",
711
1478
path_keyword='object_path',
712
1479
connection_keyword='connection')
713
1480
def Introspect(self, object_path, connection):
714
"""Standard D-Bus method, overloaded to insert property tags.
1481
"""Overloading of standard D-Bus method.
1482
1483
Inserts property tags and interface annotation tags.
715
1484
"""
716
xmlstring = dbus.service.Object.Introspect(self, object_path,
717
connection)
1485
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1486
object_path,
1487
connection)
718
1488
try:
719
1489
document = xml.dom.minidom.parseString(xmlstring)
1490
720
1491
def make_tag(document, name, prop):
721
1492
e = document.createElement("property")
722
1493
e.setAttribute("name", name)
723
1494
e.setAttribute("type", prop._dbus_signature)
724
1495
e.setAttribute("access", prop._dbus_access)
725
1496
return e
1497
726
1498
for if_tag in document.getElementsByTagName("interface"):
1499
# Add property tags
727
1500
for tag in (make_tag(document, name, prop)
728
1501
for name, prop
729
in self._get_all_dbus_properties()
1502
in self._get_all_dbus_things("property")
730
1503
if prop._dbus_interface
731
1504
== if_tag.getAttribute("name")):
732
1505
if_tag.appendChild(tag)
1506
# Add annotation tags for properties
1507
for tag in if_tag.getElementsByTagName("property"):
1508
annots = dict()
1509
for name, prop in self._get_all_dbus_things(
1510
"property"):
1511
if (name == tag.getAttribute("name")
1512
and prop._dbus_interface
1513
== if_tag.getAttribute("name")):
1514
annots.update(getattr(
1515
prop, "_dbus_annotations", {}))
1516
for name, value in annots.items():
1517
ann_tag = document.createElement(
1518
"annotation")
1519
ann_tag.setAttribute("name", name)
1520
ann_tag.setAttribute("value", value)
1521
tag.appendChild(ann_tag)
733
1522
# Add the names to the return values for the
734
1523
# "org.freedesktop.DBus.Properties" methods
735
1524
if (if_tag.getAttribute("name")
750
1539
except (AttributeError, xml.dom.DOMException,
751
1540
xml.parsers.expat.ExpatError) as error:
752
1541
logger.error("Failed to override Introspection method",
753
error)
754
return xmlstring
755
756
757
def datetime_to_dbus (dt, variant_level=0):
1542
exc_info=error)
1543
return xmlstring
1544
1545
1546
try:
1547
dbus.OBJECT_MANAGER_IFACE
1548
except AttributeError:
1549
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1550
1551
1552
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1553
"""A D-Bus object with an ObjectManager.
1554
1555
Classes inheriting from this exposes the standard
1556
GetManagedObjects call and the InterfacesAdded and
1557
InterfacesRemoved signals on the standard
1558
"org.freedesktop.DBus.ObjectManager" interface.
1559
1560
Note: No signals are sent automatically; they must be sent
1561
manually.
1562
"""
1563
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1564
out_signature="a{oa{sa{sv}}}")
1565
def GetManagedObjects(self):
1566
"""This function must be overridden"""
1567
raise NotImplementedError()
1568
1569
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1570
signature="oa{sa{sv}}")
1571
def InterfacesAdded(self, object_path, interfaces_and_properties):
1572
pass
1573
1574
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1575
def InterfacesRemoved(self, object_path, interfaces):
1576
pass
1577
1578
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1579
out_signature="s",
1580
path_keyword='object_path',
1581
connection_keyword='connection')
1582
def Introspect(self, object_path, connection):
1583
"""Overloading of standard D-Bus method.
1584
1585
Override return argument name of GetManagedObjects to be
1586
"objpath_interfaces_and_properties"
1587
"""
1588
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1589
object_path,
1590
connection)
1591
try:
1592
document = xml.dom.minidom.parseString(xmlstring)
1593
1594
for if_tag in document.getElementsByTagName("interface"):
1595
# Fix argument name for the GetManagedObjects method
1596
if (if_tag.getAttribute("name")
1597
== dbus.OBJECT_MANAGER_IFACE):
1598
for cn in if_tag.getElementsByTagName("method"):
1599
if (cn.getAttribute("name")
1600
== "GetManagedObjects"):
1601
for arg in cn.getElementsByTagName("arg"):
1602
if (arg.getAttribute("direction")
1603
== "out"):
1604
arg.setAttribute(
1605
"name",
1606
"objpath_interfaces"
1607
"_and_properties")
1608
xmlstring = document.toxml("utf-8")
1609
document.unlink()
1610
except (AttributeError, xml.dom.DOMException,
1611
xml.parsers.expat.ExpatError) as error:
1612
logger.error("Failed to override Introspection method",
1613
exc_info=error)
1614
return xmlstring
1615
1616
1617
def datetime_to_dbus(dt, variant_level=0):
758
1618
"""Convert a UTC datetime.datetime() to a D-Bus type."""
759
1619
if dt is None:
760
return dbus.String("", variant_level = variant_level)
761
return dbus.String(dt.isoformat(),
762
variant_level=variant_level)
763
764
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
765
.__metaclass__):
766
"""Applied to an empty subclass of a D-Bus object, this metaclass
767
will add additional D-Bus attributes matching a certain pattern.
1620
return dbus.String("", variant_level=variant_level)
1621
return dbus.String(dt.isoformat(), variant_level=variant_level)
1622
1623
1624
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1625
"""A class decorator; applied to a subclass of
1626
dbus.service.Object, it will add alternate D-Bus attributes with
1627
interface names according to the "alt_interface_names" mapping.
1628
Usage:
1629
1630
@alternate_dbus_interfaces({"org.example.Interface":
1631
"net.example.AlternateInterface"})
1632
class SampleDBusObject(dbus.service.Object):
1633
@dbus.service.method("org.example.Interface")
1634
def SampleDBusMethod():
1635
pass
1636
1637
The above "SampleDBusMethod" on "SampleDBusObject" will be
1638
reachable via two interfaces: "org.example.Interface" and
1639
"net.example.AlternateInterface", the latter of which will have
1640
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1641
"true", unless "deprecate" is passed with a False value.
1642
1643
This works for methods and signals, and also for D-Bus properties
1644
(from DBusObjectWithProperties) and interfaces (from the
1645
dbus_interface_annotations decorator).
768
1646
"""
769
def __new__(mcs, name, bases, attr):
770
# Go through all the base classes which could have D-Bus
771
# methods, signals, or properties in them
772
for base in (b for b in bases
773
if issubclass(b, dbus.service.Object)):
774
# Go though all attributes of the base class
775
for attrname, attribute in inspect.getmembers(base):
1647
1648
def wrapper(cls):
1649
for orig_interface_name, alt_interface_name in (
1650
alt_interface_names.items()):
1651
attr = {}
1652
interface_names = set()
1653
# Go though all attributes of the class
1654
for attrname, attribute in inspect.getmembers(cls):
776
1655
# Ignore non-D-Bus attributes, and D-Bus attributes
777
1656
# with the wrong interface name
778
1657
if (not hasattr(attribute, "_dbus_interface")
779
or not attribute._dbus_interface
780
.startswith("se.recompile.Mandos")):
1658
or not attribute._dbus_interface.startswith(
1659
orig_interface_name)):
781
1660
continue
782
1661
# Create an alternate D-Bus interface name based on
783
1662
# the current name
784
alt_interface = (attribute._dbus_interface
785
.replace("se.recompile.Mandos",
786
"se.bsnet.fukt.Mandos"))
1663
alt_interface = attribute._dbus_interface.replace(
1664
orig_interface_name, alt_interface_name)
1665
interface_names.add(alt_interface)
787
1666
# Is this a D-Bus signal?
788
1667
if getattr(attribute, "_dbus_is_signal", False):
789
# Extract the original non-method function by
790
# black magic
791
nonmethod_func = (dict(
1668
# Extract the original non-method undecorated
1669
# function by black magic
1670
if sys.version_info.major == 2:
1671
nonmethod_func = (dict(
792
1672
zip(attribute.func_code.co_freevars,
793
attribute.__closure__))["func"]
794
.cell_contents)
1673
attribute.__closure__))
1674
["func"].cell_contents)
1675
else:
1676
nonmethod_func = (dict(
1677
zip(attribute.__code__.co_freevars,
1678
attribute.__closure__))
1679
["func"].cell_contents)
795
1680
# Create a new, but exactly alike, function
796
1681
# object, and decorate it to be a new D-Bus signal
797
1682
# with the alternate D-Bus interface name
798
new_function = (dbus.service.signal
799
(alt_interface,
800
attribute._dbus_signature)
801
(types.FunctionType(
802
nonmethod_func.func_code,
803
nonmethod_func.func_globals,
804
nonmethod_func.func_name,
805
nonmethod_func.func_defaults,
806
nonmethod_func.func_closure)))
1683
new_function = copy_function(nonmethod_func)
1684
new_function = (dbus.service.signal(
1685
alt_interface,
1686
attribute._dbus_signature)(new_function))
1687
# Copy annotations, if any
1688
try:
1689
new_function._dbus_annotations = dict(
1690
attribute._dbus_annotations)
1691
except AttributeError:
1692
pass
1693
807
1694
# Define a creator of a function to call both the
808
# old and new functions, so both the old and new
809
# signals gets sent when the function is called
1695
# original and alternate functions, so both the
1696
# original and alternate signals gets sent when
1697
# the function is called
810
1698
def fixscope(func1, func2):
811
1699
"""This function is a scope container to pass
812
1700
func1 and func2 to the "call_both" function
813
1701
outside of its arguments"""
1702
1703
@functools.wraps(func2)
814
1704
def call_both(*args, **kwargs):
815
1705
"""This function will emit two D-Bus
816
1706
signals by calling func1 and func2"""
817
1707
func1(*args, **kwargs)
818
1708
func2(*args, **kwargs)
1709
# Make wrapper function look like a D-Bus
1710
# signal
1711
for name, attr in inspect.getmembers(func2):
1712
if name.startswith("_dbus_"):
1713
setattr(call_both, name, attr)
1714
819
1715
return call_both
820
1716
# Create the "call_both" function and add it to
821
1717
# the class
822
attr[attrname] = fixscope(attribute,
823
new_function)
1718
attr[attrname] = fixscope(attribute, new_function)
824
1719
# Is this a D-Bus method?
825
1720
elif getattr(attribute, "_dbus_is_method", False):
826
1721
# Create a new, but exactly alike, function
827
1722
# object. Decorate it to be a new D-Bus method
828
1723
# with the alternate D-Bus interface name. Add it
829
1724
# to the class.
830
attr[attrname] = (dbus.service.method
831
(alt_interface,
832
attribute._dbus_in_signature,
833
attribute._dbus_out_signature)
834
(types.FunctionType
835
(attribute.func_code,
836
attribute.func_globals,
837
attribute.func_name,
838
attribute.func_defaults,
839
attribute.func_closure)))
1725
attr[attrname] = (
1726
dbus.service.method(
1727
alt_interface,
1728
attribute._dbus_in_signature,
1729
attribute._dbus_out_signature)
1730
(copy_function(attribute)))
1731
# Copy annotations, if any
1732
try:
1733
attr[attrname]._dbus_annotations = dict(
1734
attribute._dbus_annotations)
1735
except AttributeError:
1736
pass
840
1737
# Is this a D-Bus property?
841
1738
elif getattr(attribute, "_dbus_is_property", False):
842
1739
# Create a new, but exactly alike, function
843
1740
# object, and decorate it to be a new D-Bus
844
1741
# property with the alternate D-Bus interface
845
1742
# name. Add it to the class.
846
attr[attrname] = (dbus_service_property
847
(alt_interface,
848
attribute._dbus_signature,
849
attribute._dbus_access,
850
attribute
851
._dbus_get_args_options
852
["byte_arrays"])
853
(types.FunctionType
854
(attribute.func_code,
855
attribute.func_globals,
856
attribute.func_name,
857
attribute.func_defaults,
858
attribute.func_closure)))
859
return type.__new__(mcs, name, bases, attr)
860
1743
attr[attrname] = (dbus_service_property(
1744
alt_interface, attribute._dbus_signature,
1745
attribute._dbus_access,
1746
attribute._dbus_get_args_options
1747
["byte_arrays"])
1748
(copy_function(attribute)))
1749
# Copy annotations, if any
1750
try:
1751
attr[attrname]._dbus_annotations = dict(
1752
attribute._dbus_annotations)
1753
except AttributeError:
1754
pass
1755
# Is this a D-Bus interface?
1756
elif getattr(attribute, "_dbus_is_interface", False):
1757
# Create a new, but exactly alike, function
1758
# object. Decorate it to be a new D-Bus interface
1759
# with the alternate D-Bus interface name. Add it
1760
# to the class.
1761
attr[attrname] = (
1762
dbus_interface_annotations(alt_interface)
1763
(copy_function(attribute)))
1764
if deprecate:
1765
# Deprecate all alternate interfaces
1766
iname = "_AlternateDBusNames_interface_annotation{}"
1767
for interface_name in interface_names:
1768
1769
@dbus_interface_annotations(interface_name)
1770
def func(self):
1771
return {"org.freedesktop.DBus.Deprecated":
1772
"true"}
1773
# Find an unused name
1774
for aname in (iname.format(i)
1775
for i in itertools.count()):
1776
if aname not in attr:
1777
attr[aname] = func
1778
break
1779
if interface_names:
1780
# Replace the class with a new subclass of it with
1781
# methods, signals, etc. as created above.
1782
if sys.version_info.major == 2:
1783
cls = type(b"{}Alternate".format(cls.__name__),
1784
(cls, ), attr)
1785
else:
1786
cls = type("{}Alternate".format(cls.__name__),
1787
(cls, ), attr)
1788
return cls
1789
1790
return wrapper
1791
1792
1793
@alternate_dbus_interfaces({"se.recompile.Mandos":
1794
"se.bsnet.fukt.Mandos"})
861
1795
class ClientDBus(Client, DBusObjectWithProperties):
862
1796
"""A Client class using D-Bus
863
1797
864
1798
Attributes:
865
1799
dbus_object_path: dbus.ObjectPath
866
1800
bus: dbus.SystemBus()
867
1801
"""
868
1802
869
1803
runtime_expansions = (Client.runtime_expansions
870
+ ("dbus_object_path",))
871
1804
+ ("dbus_object_path", ))
1805
1806
_interface = "se.recompile.Mandos.Client"
1807
872
1808
# dbus.service.Object doesn't use super(), so we can't either.
873
874
def __init__(self, bus = None, *args, **kwargs):
875
self._approvals_pending = 0
1809
1810
def __init__(self, bus=None, *args, **kwargs):
876
1811
self.bus = bus
877
1812
Client.__init__(self, *args, **kwargs)
878
1813
# Only now, when this client is initialized, can it show up on
879
1814
# the D-Bus
880
client_object_name = unicode(self.name).translate(
1815
client_object_name = str(self.name).translate(
881
1816
{ord("."): ord("_"),
882
1817
ord("-"): ord("_")})
883
self.dbus_object_path = (dbus.ObjectPath
884
("/clients/" + client_object_name))
1818
self.dbus_object_path = dbus.ObjectPath(
1819
"/clients/" + client_object_name)
885
1820
DBusObjectWithProperties.__init__(self, self.bus,
886
1821
self.dbus_object_path)
887
888
def notifychangeproperty(transform_func,
889
dbus_name, type_func=lambda x: x,
890
variant_level=1):
1822
1823
def notifychangeproperty(transform_func, dbus_name,
1824
type_func=lambda x: x,
1825
variant_level=1,
1826
invalidate_only=False,
1827
_interface=_interface):
891
1828
""" Modify a variable so that it's a property which announces
892
1829
its changes to DBus.
893
1830
894
transform_fun: Function that takes a value and transforms it
895
to a D-Bus type.
1831
transform_fun: Function that takes a value and a variant_level
1832
and transforms it to a D-Bus type.
896
1833
dbus_name: D-Bus name of the variable
897
1834
type_func: Function that transform the value before sending it
898
1835
to the D-Bus. Default: no transform
899
1836
variant_level: D-Bus variant level. Default: 1
900
1837
"""
901
attrname = "_{0}".format(dbus_name)
1838
attrname = "_{}".format(dbus_name)
1839
902
1840
def setter(self, value):
903
1841
if hasattr(self, "dbus_object_path"):
904
1842
if (not hasattr(self, attrname) or
905
1843
type_func(getattr(self, attrname, None))
906
1844
!= type_func(value)):
907
dbus_value = transform_func(type_func(value),
908
variant_level)
909
self.PropertyChanged(dbus.String(dbus_name),
910
dbus_value)
1845
if invalidate_only:
1846
self.PropertiesChanged(
1847
_interface, dbus.Dictionary(),
1848
dbus.Array((dbus_name, )))
1849
else:
1850
dbus_value = transform_func(
1851
type_func(value),
1852
variant_level=variant_level)
1853
self.PropertyChanged(dbus.String(dbus_name),
1854
dbus_value)
1855
self.PropertiesChanged(
1856
_interface,
1857
dbus.Dictionary({dbus.String(dbus_name):
1858
dbus_value}),
1859
dbus.Array())
911
1860
setattr(self, attrname, value)
912
1861
913
1862
return property(lambda self: getattr(self, attrname), setter)
914
915
1863
916
1864
expires = notifychangeproperty(datetime_to_dbus, "Expires")
917
1865
approvals_pending = notifychangeproperty(dbus.Boolean,
918
1866
"ApprovalPending",
919
type_func = bool)
1867
type_func=bool)
920
1868
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
921
1869
last_enabled = notifychangeproperty(datetime_to_dbus,
922
1870
"LastEnabled")
923
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
924
type_func = lambda checker:
925
checker is not None)
1871
checker = notifychangeproperty(
1872
dbus.Boolean, "CheckerRunning",
1873
type_func=lambda checker: checker is not None)
926
1874
last_checked_ok = notifychangeproperty(datetime_to_dbus,
927
1875
"LastCheckedOK")
1876
last_checker_status = notifychangeproperty(dbus.Int16,
1877
"LastCheckerStatus")
928
1878
last_approval_request = notifychangeproperty(
929
1879
datetime_to_dbus, "LastApprovalRequest")
930
1880
approved_by_default = notifychangeproperty(dbus.Boolean,
931
1881
"ApprovedByDefault")
932
approval_delay = notifychangeproperty(dbus.UInt16,
933
"ApprovalDelay",
934
type_func =
935
_timedelta_to_milliseconds)
1882
approval_delay = notifychangeproperty(
1883
dbus.UInt64, "ApprovalDelay",
1884
type_func=lambda td: td.total_seconds() * 1000)
936
1885
approval_duration = notifychangeproperty(
937
dbus.UInt16, "ApprovalDuration",
938
type_func = _timedelta_to_milliseconds)
1886
dbus.UInt64, "ApprovalDuration",
1887
type_func=lambda td: td.total_seconds() * 1000)
939
1888
host = notifychangeproperty(dbus.String, "Host")
940
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
941
type_func =
942
_timedelta_to_milliseconds)
1889
timeout = notifychangeproperty(
1890
dbus.UInt64, "Timeout",
1891
type_func=lambda td: td.total_seconds() * 1000)
943
1892
extended_timeout = notifychangeproperty(
944
dbus.UInt16, "ExtendedTimeout",
945
type_func = _timedelta_to_milliseconds)
946
interval = notifychangeproperty(dbus.UInt16,
947
"Interval",
948
type_func =
949
_timedelta_to_milliseconds)
1893
dbus.UInt64, "ExtendedTimeout",
1894
type_func=lambda td: td.total_seconds() * 1000)
1895
interval = notifychangeproperty(
1896
dbus.UInt64, "Interval",
1897
type_func=lambda td: td.total_seconds() * 1000)
950
1898
checker_command = notifychangeproperty(dbus.String, "Checker")
951
1899
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1900
invalidate_only=True)
1901
952
1902
del notifychangeproperty
953
1903
954
1904
def __del__(self, *args, **kwargs):
955
1905
try:
956
1906
self.remove_from_connection()
959
1909
if hasattr(DBusObjectWithProperties, "__del__"):
960
1910
DBusObjectWithProperties.__del__(self, *args, **kwargs)
961
1911
Client.__del__(self, *args, **kwargs)
962
963
def checker_callback(self, pid, condition, command,
964
*args, **kwargs):
965
self.checker_callback_tag = None
966
self.checker = None
967
if os.WIFEXITED(condition):
968
exitstatus = os.WEXITSTATUS(condition)
1912
1913
def checker_callback(self, source, condition,
1914
connection, command, *args, **kwargs):
1915
ret = Client.checker_callback(self, source, condition,
1916
connection, command, *args,
1917
**kwargs)
1918
exitstatus = self.last_checker_status
1919
if exitstatus >= 0:
969
1920
# Emit D-Bus signal
970
1921
self.CheckerCompleted(dbus.Int16(exitstatus),
971
dbus.Int64(condition),
1922
# This is specific to GNU libC
1923
dbus.Int64(exitstatus << 8),
972
1924
dbus.String(command))
973
1925
else:
974
1926
# Emit D-Bus signal
975
1927
self.CheckerCompleted(dbus.Int16(-1),
976
dbus.Int64(condition),
1928
dbus.Int64(
1929
# This is specific to GNU libC
1930
(exitstatus << 8)
1931
| self.last_checker_signal),
977
1932
dbus.String(command))
978
979
return Client.checker_callback(self, pid, condition, command,
980
*args, **kwargs)
981
1933
return ret
1934
982
1935
def start_checker(self, *args, **kwargs):
983
old_checker = self.checker
984
if self.checker is not None:
985
old_checker_pid = self.checker.pid
986
else:
987
old_checker_pid = None
1936
old_checker_pid = getattr(self.checker, "pid", None)
988
1937
r = Client.start_checker(self, *args, **kwargs)
989
1938
# Only if new checker process was started
990
1939
if (self.checker is not None
992
1941
# Emit D-Bus signal
993
1942
self.CheckerStarted(self.current_checker_command)
994
1943
return r
995
1944
996
1945
def _reset_approved(self):
997
self._approved = None
1946
self.approved = None
998
1947
return False
999
1948
1000
1949
def approve(self, value=True):
1950
self.approved = value
1951
GLib.timeout_add(int(self.approval_duration.total_seconds()
1952
* 1000), self._reset_approved)
1001
1953
self.send_changedstate()
1002
self._approved = value
1003
gobject.timeout_add(_timedelta_to_milliseconds
1004
(self.approval_duration),
1005
self._reset_approved)
1006
1007
1008
## D-Bus methods, signals & properties
1009
_interface = "se.recompile.Mandos.Client"
1010
1011
## Signals
1012
1954
1955
# D-Bus methods, signals & properties
1956
1957
# Interfaces
1958
1959
# Signals
1960
1013
1961
# CheckerCompleted - signal
1014
1962
@dbus.service.signal(_interface, signature="nxs")
1015
1963
def CheckerCompleted(self, exitcode, waitstatus, command):
1016
1964
"D-Bus signal"
1017
1965
pass
1018
1966
1019
1967
# CheckerStarted - signal
1020
1968
@dbus.service.signal(_interface, signature="s")
1021
1969
def CheckerStarted(self, command):
1022
1970
"D-Bus signal"
1023
1971
pass
1024
1972
1025
1973
# PropertyChanged - signal
1974
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1026
1975
@dbus.service.signal(_interface, signature="sv")
1027
1976
def PropertyChanged(self, property, value):
1028
1977
"D-Bus signal"
1029
1978
pass
1030
1979
1031
1980
# GotSecret - signal
1032
1981
@dbus.service.signal(_interface)
1033
1982
def GotSecret(self):
1036
1985
server to mandos-client
1037
1986
"""
1038
1987
pass
1039
1988
1040
1989
# Rejected - signal
1041
1990
@dbus.service.signal(_interface, signature="s")
1042
1991
def Rejected(self, reason):
1043
1992
"D-Bus signal"
1044
1993
pass
1045
1994
1046
1995
# NeedApproval - signal
1047
1996
@dbus.service.signal(_interface, signature="tb")
1048
1997
def NeedApproval(self, timeout, default):
1049
1998
"D-Bus signal"
1050
1999
return self.need_approval()
1051
1052
## Methods
1053
2000
2001
# Methods
2002
1054
2003
# Approve - method
1055
2004
@dbus.service.method(_interface, in_signature="b")
1056
2005
def Approve(self, value):
1057
2006
self.approve(value)
1058
2007
1059
2008
# CheckedOK - method
1060
2009
@dbus.service.method(_interface)
1061
2010
def CheckedOK(self):
1062
2011
self.checked_ok()
1063
2012
1064
2013
# Enable - method
2014
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1065
2015
@dbus.service.method(_interface)
1066
2016
def Enable(self):
1067
2017
"D-Bus method"
1068
2018
self.enable()
1069
2019
1070
2020
# StartChecker - method
2021
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1071
2022
@dbus.service.method(_interface)
1072
2023
def StartChecker(self):
1073
2024
"D-Bus method"
1074
2025
self.start_checker()
1075
2026
1076
2027
# Disable - method
2028
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1077
2029
@dbus.service.method(_interface)
1078
2030
def Disable(self):
1079
2031
"D-Bus method"
1080
2032
self.disable()
1081
2033
1082
2034
# StopChecker - method
2035
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1083
2036
@dbus.service.method(_interface)
1084
2037
def StopChecker(self):
1085
2038
self.stop_checker()
1086
1087
## Properties
1088
2039
2040
# Properties
2041
1089
2042
# ApprovalPending - property
1090
2043
@dbus_service_property(_interface, signature="b", access="read")
1091
2044
def ApprovalPending_dbus_property(self):
1092
2045
return dbus.Boolean(bool(self.approvals_pending))
1093
2046
1094
2047
# ApprovedByDefault - property
1095
@dbus_service_property(_interface, signature="b",
2048
@dbus_service_property(_interface,
2049
signature="b",
1096
2050
access="readwrite")
1097
2051
def ApprovedByDefault_dbus_property(self, value=None):
1098
2052
if value is None: # get
1099
2053
return dbus.Boolean(self.approved_by_default)
1100
2054
self.approved_by_default = bool(value)
1101
2055
1102
2056
# ApprovalDelay - property
1103
@dbus_service_property(_interface, signature="t",
2057
@dbus_service_property(_interface,
2058
signature="t",
1104
2059
access="readwrite")
1105
2060
def ApprovalDelay_dbus_property(self, value=None):
1106
2061
if value is None: # get
1107
return dbus.UInt64(self.approval_delay_milliseconds())
2062
return dbus.UInt64(self.approval_delay.total_seconds()
2063
* 1000)
1108
2064
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1109
2065
1110
2066
# ApprovalDuration - property
1111
@dbus_service_property(_interface, signature="t",
2067
@dbus_service_property(_interface,
2068
signature="t",
1112
2069
access="readwrite")
1113
2070
def ApprovalDuration_dbus_property(self, value=None):
1114
2071
if value is None: # get
1115
return dbus.UInt64(_timedelta_to_milliseconds(
1116
self.approval_duration))
2072
return dbus.UInt64(self.approval_duration.total_seconds()
2073
* 1000)
1117
2074
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1118
2075
1119
2076
# Name - property
2077
@dbus_annotations(
2078
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1120
2079
@dbus_service_property(_interface, signature="s", access="read")
1121
2080
def Name_dbus_property(self):
1122
2081
return dbus.String(self.name)
1123
2082
2083
# KeyID - property
2084
@dbus_annotations(
2085
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2086
@dbus_service_property(_interface, signature="s", access="read")
2087
def KeyID_dbus_property(self):
2088
return dbus.String(self.key_id)
2089
1124
2090
# Fingerprint - property
2091
@dbus_annotations(
2092
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1125
2093
@dbus_service_property(_interface, signature="s", access="read")
1126
2094
def Fingerprint_dbus_property(self):
1127
2095
return dbus.String(self.fingerprint)
1128
2096
1129
2097
# Host - property
1130
@dbus_service_property(_interface, signature="s",
2098
@dbus_service_property(_interface,
2099
signature="s",
1131
2100
access="readwrite")
1132
2101
def Host_dbus_property(self, value=None):
1133
2102
if value is None: # get
1134
2103
return dbus.String(self.host)
1135
self.host = value
1136
2104
self.host = str(value)
2105
1137
2106
# Created - property
2107
@dbus_annotations(
2108
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1138
2109
@dbus_service_property(_interface, signature="s", access="read")
1139
2110
def Created_dbus_property(self):
1140
return dbus.String(datetime_to_dbus(self.created))
1141
2111
return datetime_to_dbus(self.created)
2112
1142
2113
# LastEnabled - property
1143
2114
@dbus_service_property(_interface, signature="s", access="read")
1144
2115
def LastEnabled_dbus_property(self):
1145
2116
return datetime_to_dbus(self.last_enabled)
1146
2117
1147
2118
# Enabled - property
1148
@dbus_service_property(_interface, signature="b",
2119
@dbus_service_property(_interface,
2120
signature="b",
1149
2121
access="readwrite")
1150
2122
def Enabled_dbus_property(self, value=None):
1151
2123
if value is None: # get
1154
2126
self.enable()
1155
2127
else:
1156
2128
self.disable()
1157
2129
1158
2130
# LastCheckedOK - property
1159
@dbus_service_property(_interface, signature="s",
2131
@dbus_service_property(_interface,
2132
signature="s",
1160
2133
access="readwrite")
1161
2134
def LastCheckedOK_dbus_property(self, value=None):
1162
2135
if value is not None:
1163
2136
self.checked_ok()
1164
2137
return
1165
2138
return datetime_to_dbus(self.last_checked_ok)
1166
2139
2140
# LastCheckerStatus - property
2141
@dbus_service_property(_interface, signature="n", access="read")
2142
def LastCheckerStatus_dbus_property(self):
2143
return dbus.Int16(self.last_checker_status)
2144
1167
2145
# Expires - property
1168
2146
@dbus_service_property(_interface, signature="s", access="read")
1169
2147
def Expires_dbus_property(self):
1170
2148
return datetime_to_dbus(self.expires)
1171
2149
1172
2150
# LastApprovalRequest - property
1173
2151
@dbus_service_property(_interface, signature="s", access="read")
1174
2152
def LastApprovalRequest_dbus_property(self):
1175
2153
return datetime_to_dbus(self.last_approval_request)
1176
2154
1177
2155
# Timeout - property
1178
@dbus_service_property(_interface, signature="t",
2156
@dbus_service_property(_interface,
2157
signature="t",
1179
2158
access="readwrite")
1180
2159
def Timeout_dbus_property(self, value=None):
1181
2160
if value is None: # get
1182
return dbus.UInt64(self.timeout_milliseconds())
2161
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2162
old_timeout = self.timeout
1183
2163
self.timeout = datetime.timedelta(0, 0, 0, value)
1184
if getattr(self, "disable_initiator_tag", None) is None:
1185
return
1186
# Reschedule timeout
1187
gobject.source_remove(self.disable_initiator_tag)
1188
self.disable_initiator_tag = None
1189
self.expires = None
1190
time_to_die = (self.
1191
_timedelta_to_milliseconds((self
1192
.last_checked_ok
1193
+ self.timeout)
1194
- datetime.datetime
1195
.utcnow()))
1196
if time_to_die <= 0:
1197
# The timeout has passed
1198
self.disable()
1199
else:
1200
self.expires = (datetime.datetime.utcnow()
1201
+ datetime.timedelta(milliseconds =
1202
time_to_die))
1203
self.disable_initiator_tag = (gobject.timeout_add
1204
(time_to_die, self.disable))
1205
2164
# Reschedule disabling
2165
if self.enabled:
2166
now = datetime.datetime.utcnow()
2167
self.expires += self.timeout - old_timeout
2168
if self.expires <= now:
2169
# The timeout has passed
2170
self.disable()
2171
else:
2172
if (getattr(self, "disable_initiator_tag", None)
2173
is None):
2174
return
2175
GLib.source_remove(self.disable_initiator_tag)
2176
self.disable_initiator_tag = GLib.timeout_add(
2177
int((self.expires - now).total_seconds() * 1000),
2178
self.disable)
2179
1206
2180
# ExtendedTimeout - property
1207
@dbus_service_property(_interface, signature="t",
2181
@dbus_service_property(_interface,
2182
signature="t",
1208
2183
access="readwrite")
1209
2184
def ExtendedTimeout_dbus_property(self, value=None):
1210
2185
if value is None: # get
1211
return dbus.UInt64(self.extended_timeout_milliseconds())
2186
return dbus.UInt64(self.extended_timeout.total_seconds()
2187
* 1000)
1212
2188
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1213
2189
1214
2190
# Interval - property
1215
@dbus_service_property(_interface, signature="t",
2191
@dbus_service_property(_interface,
2192
signature="t",
1216
2193
access="readwrite")
1217
2194
def Interval_dbus_property(self, value=None):
1218
2195
if value is None: # get
1219
return dbus.UInt64(self.interval_milliseconds())
2196
return dbus.UInt64(self.interval.total_seconds() * 1000)
1220
2197
self.interval = datetime.timedelta(0, 0, 0, value)
1221
2198
if getattr(self, "checker_initiator_tag", None) is None:
1222
2199
return
1223
# Reschedule checker run
1224
gobject.source_remove(self.checker_initiator_tag)
1225
self.checker_initiator_tag = (gobject.timeout_add
1226
(value, self.start_checker))
1227
self.start_checker() # Start one now, too
1228
2200
if self.enabled:
2201
# Reschedule checker run
2202
GLib.source_remove(self.checker_initiator_tag)
2203
self.checker_initiator_tag = GLib.timeout_add(
2204
value, self.start_checker)
2205
self.start_checker() # Start one now, too
2206
1229
2207
# Checker - property
1230
@dbus_service_property(_interface, signature="s",
2208
@dbus_service_property(_interface,
2209
signature="s",
1231
2210
access="readwrite")
1232
2211
def Checker_dbus_property(self, value=None):
1233
2212
if value is None: # get
1234
2213
return dbus.String(self.checker_command)
1235
self.checker_command = value
1236
2214
self.checker_command = str(value)
2215
1237
2216
# CheckerRunning - property
1238
@dbus_service_property(_interface, signature="b",
2217
@dbus_service_property(_interface,
2218
signature="b",
1239
2219
access="readwrite")
1240
2220
def CheckerRunning_dbus_property(self, value=None):
1241
2221
if value is None: # get
1244
2224
self.start_checker()
1245
2225
else:
1246
2226
self.stop_checker()
1247
2227
1248
2228
# ObjectPath - property
2229
@dbus_annotations(
2230
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2231
"org.freedesktop.DBus.Deprecated": "true"})
1249
2232
@dbus_service_property(_interface, signature="o", access="read")
1250
2233
def ObjectPath_dbus_property(self):
1251
return self.dbus_object_path # is already a dbus.ObjectPath
1252
2234
return self.dbus_object_path # is already a dbus.ObjectPath
2235
1253
2236
# Secret = property
1254
@dbus_service_property(_interface, signature="ay",
1255
access="write", byte_arrays=True)
2237
@dbus_annotations(
2238
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2239
"invalidates"})
2240
@dbus_service_property(_interface,
2241
signature="ay",
2242
access="write",
2243
byte_arrays=True)
1256
2244
def Secret_dbus_property(self, value):
1257
self.secret = str(value)
1258
2245
self.secret = bytes(value)
2246
1259
2247
del _interface
1260
2248
1261
2249
1262
class ProxyClient(object):
1263
def __init__(self, child_pipe, fpr, address):
2250
class ProxyClient:
2251
def __init__(self, child_pipe, key_id, fpr, address):
1264
2252
self._pipe = child_pipe
1265
self._pipe.send(('init', fpr, address))
2253
self._pipe.send(('init', key_id, fpr, address))
1266
2254
if not self._pipe.recv():
1267
raise KeyError()
1268
2255
raise KeyError(key_id or fpr)
2256
1269
2257
def __getattribute__(self, name):
1270
if(name == '_pipe'):
2258
if name == '_pipe':
1271
2259
return super(ProxyClient, self).__getattribute__(name)
1272
2260
self._pipe.send(('getattr', name))
1273
2261
data = self._pipe.recv()
1274
2262
if data[0] == 'data':
1275
2263
return data[1]
1276
2264
if data[0] == 'function':
2265
1277
2266
def func(*args, **kwargs):
1278
2267
self._pipe.send(('funcall', name, args, kwargs))
1279
2268
return self._pipe.recv()[1]
2269
1280
2270
return func
1281
2271
1282
2272
def __setattr__(self, name, value):
1283
if(name == '_pipe'):
2273
if name == '_pipe':
1284
2274
return super(ProxyClient, self).__setattr__(name, value)
1285
2275
self._pipe.send(('setattr', name, value))
1286
2276
1287
class ClientDBusTransitional(ClientDBus):
1288
__metaclass__ = AlternateDBusNamesMetaclass
1289
2277
1290
2278
class ClientHandler(socketserver.BaseRequestHandler, object):
1291
2279
"""A class to handle client connections.
1292
2280
1293
2281
Instantiated once for each connection to handle it.
1294
2282
Note: This will run in its own forked process."""
1295
2283
1296
2284
def handle(self):
1297
2285
with contextlib.closing(self.server.child_pipe) as child_pipe:
1298
2286
logger.info("TCP connection from: %s",
1299
unicode(self.client_address))
2287
str(self.client_address))
1300
2288
logger.debug("Pipe FD: %d",
1301
2289
self.server.child_pipe.fileno())
1302
1303
session = (gnutls.connection
1304
.ClientSession(self.request,
1305
gnutls.connection
1306
.X509Credentials()))
1307
1308
# Note: gnutls.connection.X509Credentials is really a
1309
# generic GnuTLS certificate credentials object so long as
1310
# no X.509 keys are added to it. Therefore, we can use it
1311
# here despite using OpenPGP certificates.
1312
1313
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1314
# "+AES-256-CBC", "+SHA1",
1315
# "+COMP-NULL", "+CTYPE-OPENPGP",
1316
# "+DHE-DSS"))
2290
2291
session = gnutls.ClientSession(self.request)
2292
2293
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2294
# "+AES-256-CBC", "+SHA1",
2295
# "+COMP-NULL", "+CTYPE-OPENPGP",
2296
# "+DHE-DSS"))
1317
2297
# Use a fallback default, since this MUST be set.
1318
2298
priority = self.server.gnutls_priority
1319
2299
if priority is None:
1320
2300
priority = "NORMAL"
1321
(gnutls.library.functions
1322
.gnutls_priority_set_direct(session._c_object,
1323
priority, None))
1324
2301
gnutls.priority_set_direct(session._c_object,
2302
priority.encode("utf-8"),
2303
None)
2304
1325
2305
# Start communication using the Mandos protocol
1326
2306
# Get protocol number
1327
2307
line = self.request.makefile().readline()
1328
2308
logger.debug("Protocol version: %r", line)
1329
2309
try:
1330
2310
if int(line.strip().split()[0]) > 1:
1331
raise RuntimeError
2311
raise RuntimeError(line)
1332
2312
except (ValueError, IndexError, RuntimeError) as error:
1333
2313
logger.error("Unknown protocol version: %s", error)
1334
2314
return
1335
2315
1336
2316
# Start GnuTLS connection
1337
2317
try:
1338
2318
session.handshake()
1339
except gnutls.errors.GNUTLSError as error:
2319
except gnutls.Error as error:
1340
2320
logger.warning("Handshake failed: %s", error)
1341
2321
# Do not run session.bye() here: the session is not
1342
2322
# established. Just abandon the request.
1343
2323
return
1344
2324
logger.debug("Handshake succeeded")
1345
2325
1346
2326
approval_required = False
1347
2327
try:
1348
try:
1349
fpr = self.fingerprint(self.peer_certificate
1350
(session))
1351
except (TypeError,
1352
gnutls.errors.GNUTLSError) as error:
1353
logger.warning("Bad certificate: %s", error)
1354
return
1355
logger.debug("Fingerprint: %s", fpr)
1356
1357
try:
1358
client = ProxyClient(child_pipe, fpr,
2328
if gnutls.has_rawpk:
2329
fpr = b""
2330
try:
2331
key_id = self.key_id(
2332
self.peer_certificate(session))
2333
except (TypeError, gnutls.Error) as error:
2334
logger.warning("Bad certificate: %s", error)
2335
return
2336
logger.debug("Key ID: %s", key_id)
2337
2338
else:
2339
key_id = b""
2340
try:
2341
fpr = self.fingerprint(
2342
self.peer_certificate(session))
2343
except (TypeError, gnutls.Error) as error:
2344
logger.warning("Bad certificate: %s", error)
2345
return
2346
logger.debug("Fingerprint: %s", fpr)
2347
2348
try:
2349
client = ProxyClient(child_pipe, key_id, fpr,
1359
2350
self.client_address)
1360
2351
except KeyError:
1361
2352
return
1362
2353
1363
2354
if client.approval_delay:
1364
2355
delay = client.approval_delay
1365
2356
client.approvals_pending += 1
1366
2357
approval_required = True
1367
2358
1368
2359
while True:
1369
2360
if not client.enabled:
1370
2361
logger.info("Client %s is disabled",
1371
client.name)
2362
client.name)
1372
2363
if self.server.use_dbus:
1373
2364
# Emit D-Bus signal
1374
2365
client.Rejected("Disabled")
1375
2366
return
1376
1377
if client._approved or not client.approval_delay:
1378
#We are approved or approval is disabled
2367
2368
if client.approved or not client.approval_delay:
2369
# We are approved or approval is disabled
1379
2370
break
1380
elif client._approved is None:
2371
elif client.approved is None:
1381
2372
logger.info("Client %s needs approval",
1382
2373
client.name)
1383
2374
if self.server.use_dbus:
1384
2375
# Emit D-Bus signal
1385
2376
client.NeedApproval(
1386
client.approval_delay_milliseconds(),
1387
client.approved_by_default)
2377
client.approval_delay.total_seconds()
2378
* 1000, client.approved_by_default)
1388
2379
else:
1389
2380
logger.warning("Client %s was not approved",
1390
2381
client.name)
1392
2383
# Emit D-Bus signal
1393
2384
client.Rejected("Denied")
1394
2385
return
1395
1396
#wait until timeout or approved
2386
2387
# wait until timeout or approved
1397
2388
time = datetime.datetime.now()
1398
2389
client.changedstate.acquire()
1399
(client.changedstate.wait
1400
(float(client._timedelta_to_milliseconds(delay)
1401
/ 1000)))
2390
client.changedstate.wait(delay.total_seconds())
1402
2391
client.changedstate.release()
1403
2392
time2 = datetime.datetime.now()
1404
2393
if (time2 - time) >= delay:
1414
2403
break
1415
2404
else:
1416
2405
delay -= time2 - time
1417
1418
sent_size = 0
1419
while sent_size < len(client.secret):
1420
try:
1421
sent = session.send(client.secret[sent_size:])
1422
except gnutls.errors.GNUTLSError as error:
1423
logger.warning("gnutls send failed")
1424
return
1425
logger.debug("Sent: %d, remaining: %d",
1426
sent, len(client.secret)
1427
- (sent_size + sent))
1428
sent_size += sent
1429
2406
2407
try:
2408
session.send(client.secret)
2409
except gnutls.Error as error:
2410
logger.warning("gnutls send failed",
2411
exc_info=error)
2412
return
2413
1430
2414
logger.info("Sending secret to %s", client.name)
1431
# bump the timeout as if seen
1432
client.checked_ok(client.extended_timeout)
2415
# bump the timeout using extended_timeout
2416
client.bump_timeout(client.extended_timeout)
1433
2417
if self.server.use_dbus:
1434
2418
# Emit D-Bus signal
1435
2419
client.GotSecret()
1436
2420
1437
2421
finally:
1438
2422
if approval_required:
1439
2423
client.approvals_pending -= 1
1440
2424
try:
1441
2425
session.bye()
1442
except gnutls.errors.GNUTLSError as error:
1443
logger.warning("GnuTLS bye failed")
1444
2426
except gnutls.Error as error:
2427
logger.warning("GnuTLS bye failed",
2428
exc_info=error)
2429
1445
2430
@staticmethod
1446
2431
def peer_certificate(session):
1447
"Return the peer's OpenPGP certificate as a bytestring"
1448
# If not an OpenPGP certificate...
1449
if (gnutls.library.functions
1450
.gnutls_certificate_type_get(session._c_object)
1451
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1452
# ...do the normal thing
1453
return session.peer_certificate
2432
"Return the peer's certificate as a bytestring"
2433
try:
2434
cert_type = gnutls.certificate_type_get2(session._c_object,
2435
gnutls.CTYPE_PEERS)
2436
except AttributeError:
2437
cert_type = gnutls.certificate_type_get(session._c_object)
2438
if gnutls.has_rawpk:
2439
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2440
else:
2441
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2442
# If not a valid certificate type...
2443
if cert_type not in valid_cert_types:
2444
logger.info("Cert type %r not in %r", cert_type,
2445
valid_cert_types)
2446
# ...return invalid data
2447
return b""
1454
2448
list_size = ctypes.c_uint(1)
1455
cert_list = (gnutls.library.functions
1456
.gnutls_certificate_get_peers
2449
cert_list = (gnutls.certificate_get_peers
1457
2450
(session._c_object, ctypes.byref(list_size)))
1458
2451
if not bool(cert_list) and list_size.value != 0:
1459
raise gnutls.errors.GNUTLSError("error getting peer"
1460
" certificate")
2452
raise gnutls.Error("error getting peer certificate")
1461
2453
if list_size.value == 0:
1462
2454
return None
1463
2455
cert = cert_list[0]
1464
2456
return ctypes.string_at(cert.data, cert.size)
1465
2457
2458
@staticmethod
2459
def key_id(certificate):
2460
"Convert a certificate bytestring to a hexdigit key ID"
2461
# New GnuTLS "datum" with the public key
2462
datum = gnutls.datum_t(
2463
ctypes.cast(ctypes.c_char_p(certificate),
2464
ctypes.POINTER(ctypes.c_ubyte)),
2465
ctypes.c_uint(len(certificate)))
2466
# XXX all these need to be created in the gnutls "module"
2467
# New empty GnuTLS certificate
2468
pubkey = gnutls.pubkey_t()
2469
gnutls.pubkey_init(ctypes.byref(pubkey))
2470
# Import the raw public key into the certificate
2471
gnutls.pubkey_import(pubkey,
2472
ctypes.byref(datum),
2473
gnutls.X509_FMT_DER)
2474
# New buffer for the key ID
2475
buf = ctypes.create_string_buffer(32)
2476
buf_len = ctypes.c_size_t(len(buf))
2477
# Get the key ID from the raw public key into the buffer
2478
gnutls.pubkey_get_key_id(
2479
pubkey,
2480
gnutls.KEYID_USE_SHA256,
2481
ctypes.cast(ctypes.byref(buf),
2482
ctypes.POINTER(ctypes.c_ubyte)),
2483
ctypes.byref(buf_len))
2484
# Deinit the certificate
2485
gnutls.pubkey_deinit(pubkey)
2486
2487
# Convert the buffer to a Python bytestring
2488
key_id = ctypes.string_at(buf, buf_len.value)
2489
# Convert the bytestring to hexadecimal notation
2490
hex_key_id = binascii.hexlify(key_id).upper()
2491
return hex_key_id
2492
1466
2493
@staticmethod
1467
2494
def fingerprint(openpgp):
1468
2495
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1469
2496
# New GnuTLS "datum" with the OpenPGP public key
1470
datum = (gnutls.library.types
1471
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1472
ctypes.POINTER
1473
(ctypes.c_ubyte)),
1474
ctypes.c_uint(len(openpgp))))
2497
datum = gnutls.datum_t(
2498
ctypes.cast(ctypes.c_char_p(openpgp),
2499
ctypes.POINTER(ctypes.c_ubyte)),
2500
ctypes.c_uint(len(openpgp)))
1475
2501
# New empty GnuTLS certificate
1476
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1477
(gnutls.library.functions
1478
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2502
crt = gnutls.openpgp_crt_t()
2503
gnutls.openpgp_crt_init(ctypes.byref(crt))
1479
2504
# Import the OpenPGP public key into the certificate
1480
(gnutls.library.functions
1481
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1482
gnutls.library.constants
1483
.GNUTLS_OPENPGP_FMT_RAW))
2505
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2506
gnutls.OPENPGP_FMT_RAW)
1484
2507
# Verify the self signature in the key
1485
2508
crtverify = ctypes.c_uint()
1486
(gnutls.library.functions
1487
.gnutls_openpgp_crt_verify_self(crt, 0,
1488
ctypes.byref(crtverify)))
2509
gnutls.openpgp_crt_verify_self(crt, 0,
2510
ctypes.byref(crtverify))
1489
2511
if crtverify.value != 0:
1490
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1491
raise (gnutls.errors.CertificateSecurityError
1492
("Verify failed"))
2512
gnutls.openpgp_crt_deinit(crt)
2513
raise gnutls.CertificateSecurityError(code
2514
=crtverify.value)
1493
2515
# New buffer for the fingerprint
1494
2516
buf = ctypes.create_string_buffer(20)
1495
2517
buf_len = ctypes.c_size_t()
1496
2518
# Get the fingerprint from the certificate into the buffer
1497
(gnutls.library.functions
1498
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1499
ctypes.byref(buf_len)))
2519
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2520
ctypes.byref(buf_len))
1500
2521
# Deinit the certificate
1501
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2522
gnutls.openpgp_crt_deinit(crt)
1502
2523
# Convert the buffer to a Python bytestring
1503
2524
fpr = ctypes.string_at(buf, buf_len.value)
1504
2525
# Convert the bytestring to hexadecimal notation
1505
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2526
hex_fpr = binascii.hexlify(fpr).upper()
1506
2527
return hex_fpr
1507
2528
1508
2529
1509
class MultiprocessingMixIn(object):
2530
class MultiprocessingMixIn:
1510
2531
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2532
1511
2533
def sub_process_main(self, request, address):
1512
2534
try:
1513
2535
self.finish_request(request, address)
1514
except:
2536
except Exception:
1515
2537
self.handle_error(request, address)
1516
2538
self.close_request(request)
1517
2539
1518
2540
def process_request(self, request, address):
1519
2541
"""Start a new process to process the request."""
1520
proc = multiprocessing.Process(target = self.sub_process_main,
1521
args = (request,
1522
address))
2542
proc = multiprocessing.Process(target=self.sub_process_main,
2543
args=(request, address))
1523
2544
proc.start()
1524
2545
return proc
1525
2546
1526
2547
1527
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2548
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1528
2549
""" adds a pipe to the MixIn """
2550
1529
2551
def process_request(self, request, client_address):
1530
2552
"""Overrides and wraps the original process_request().
1531
2553
1532
2554
This function creates a new pipe in self.pipe
1533
2555
"""
1534
2556
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1535
2557
1536
2558
proc = MultiprocessingMixIn.process_request(self, request,
1537
2559
client_address)
1538
2560
self.child_pipe.close()
1539
2561
self.add_pipe(parent_pipe, proc)
1540
2562
1541
2563
def add_pipe(self, parent_pipe, proc):
1542
2564
"""Dummy function; override as necessary"""
1543
raise NotImplementedError
2565
raise NotImplementedError()
1544
2566
1545
2567
1546
2568
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1547
socketserver.TCPServer, object):
2569
socketserver.TCPServer):
1548
2570
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1549
2571
1550
2572
Attributes:
1551
2573
enabled: Boolean; whether this server is activated yet
1552
2574
interface: None or a network interface name (string)
1553
2575
use_ipv6: Boolean; to use IPv6 or not
1554
2576
"""
2577
1555
2578
def __init__(self, server_address, RequestHandlerClass,
1556
interface=None, use_ipv6=True):
2579
interface=None,
2580
use_ipv6=True,
2581
socketfd=None):
2582
"""If socketfd is set, use that file descriptor instead of
2583
creating a new one with socket.socket().
2584
"""
1557
2585
self.interface = interface
1558
2586
if use_ipv6:
1559
2587
self.address_family = socket.AF_INET6
2588
if socketfd is not None:
2589
# Save the file descriptor
2590
self.socketfd = socketfd
2591
# Save the original socket.socket() function
2592
self.socket_socket = socket.socket
2593
2594
# To implement --socket, we monkey patch socket.socket.
2595
#
2596
# (When socketserver.TCPServer is a new-style class, we
2597
# could make self.socket into a property instead of monkey
2598
# patching socket.socket.)
2599
#
2600
# Create a one-time-only replacement for socket.socket()
2601
@functools.wraps(socket.socket)
2602
def socket_wrapper(*args, **kwargs):
2603
# Restore original function so subsequent calls are
2604
# not affected.
2605
socket.socket = self.socket_socket
2606
del self.socket_socket
2607
# This time only, return a new socket object from the
2608
# saved file descriptor.
2609
return socket.fromfd(self.socketfd, *args, **kwargs)
2610
# Replace socket.socket() function with wrapper
2611
socket.socket = socket_wrapper
2612
# The socketserver.TCPServer.__init__ will call
2613
# socket.socket(), which might be our replacement,
2614
# socket_wrapper(), if socketfd was set.
1560
2615
socketserver.TCPServer.__init__(self, server_address,
1561
2616
RequestHandlerClass)
2617
1562
2618
def server_bind(self):
1563
2619
"""This overrides the normal server_bind() function
1564
2620
to bind to an interface if one was specified, and also NOT to
1565
2621
bind to an address or port if they were not specified."""
2622
global SO_BINDTODEVICE
1566
2623
if self.interface is not None:
1567
2624
if SO_BINDTODEVICE is None:
1568
logger.error("SO_BINDTODEVICE does not exist;"
1569
" cannot bind to interface %s",
1570
self.interface)
1571
else:
1572
try:
1573
self.socket.setsockopt(socket.SOL_SOCKET,
1574
SO_BINDTODEVICE,
1575
str(self.interface
1576
+ '\0'))
1577
except socket.error as error:
1578
if error[0] == errno.EPERM:
1579
logger.error("No permission to"
1580
" bind to interface %s",
1581
self.interface)
1582
elif error[0] == errno.ENOPROTOOPT:
1583
logger.error("SO_BINDTODEVICE not available;"
1584
" cannot bind to interface %s",
1585
self.interface)
1586
else:
1587
raise
2625
# Fall back to a hard-coded value which seems to be
2626
# common enough.
2627
logger.warning("SO_BINDTODEVICE not found, trying 25")
2628
SO_BINDTODEVICE = 25
2629
try:
2630
self.socket.setsockopt(
2631
socket.SOL_SOCKET, SO_BINDTODEVICE,
2632
(self.interface + "\0").encode("utf-8"))
2633
except socket.error as error:
2634
if error.errno == errno.EPERM:
2635
logger.error("No permission to bind to"
2636
" interface %s", self.interface)
2637
elif error.errno == errno.ENOPROTOOPT:
2638
logger.error("SO_BINDTODEVICE not available;"
2639
" cannot bind to interface %s",
2640
self.interface)
2641
elif error.errno == errno.ENODEV:
2642
logger.error("Interface %s does not exist,"
2643
" cannot bind", self.interface)
2644
else:
2645
raise
1588
2646
# Only bind(2) the socket if we really need to.
1589
2647
if self.server_address[0] or self.server_address[1]:
2648
if self.server_address[1]:
2649
self.allow_reuse_address = True
1590
2650
if not self.server_address[0]:
1591
2651
if self.address_family == socket.AF_INET6:
1592
any_address = "::" # in6addr_any
2652
any_address = "::" # in6addr_any
1593
2653
else:
1594
any_address = socket.INADDR_ANY
2654
any_address = "0.0.0.0" # INADDR_ANY
1595
2655
self.server_address = (any_address,
1596
2656
self.server_address[1])
1597
2657
elif not self.server_address[1]:
1598
self.server_address = (self.server_address[0],
1599
0)
2658
self.server_address = (self.server_address[0], 0)
1600
2659
# if self.interface:
1601
2660
# self.server_address = (self.server_address[0],
1602
2661
# 0, # port
1608
2667
1609
2668
class MandosServer(IPv6_TCPServer):
1610
2669
"""Mandos server.
1611
2670
1612
2671
Attributes:
1613
2672
clients: set of Client objects
1614
2673
gnutls_priority GnuTLS priority string
1615
2674
use_dbus: Boolean; to emit D-Bus signals or not
1616
1617
Assumes a gobject.MainLoop event loop.
2675
2676
Assumes a GLib.MainLoop event loop.
1618
2677
"""
2678
1619
2679
def __init__(self, server_address, RequestHandlerClass,
1620
interface=None, use_ipv6=True, clients=None,
1621
gnutls_priority=None, use_dbus=True):
2680
interface=None,
2681
use_ipv6=True,
2682
clients=None,
2683
gnutls_priority=None,
2684
use_dbus=True,
2685
socketfd=None):
1622
2686
self.enabled = False
1623
2687
self.clients = clients
1624
2688
if self.clients is None:
1625
self.clients = set()
2689
self.clients = {}
1626
2690
self.use_dbus = use_dbus
1627
2691
self.gnutls_priority = gnutls_priority
1628
2692
IPv6_TCPServer.__init__(self, server_address,
1629
2693
RequestHandlerClass,
1630
interface = interface,
1631
use_ipv6 = use_ipv6)
2694
interface=interface,
2695
use_ipv6=use_ipv6,
2696
socketfd=socketfd)
2697
1632
2698
def server_activate(self):
1633
2699
if self.enabled:
1634
2700
return socketserver.TCPServer.server_activate(self)
1635
2701
1636
2702
def enable(self):
1637
2703
self.enabled = True
1638
2704
1639
2705
def add_pipe(self, parent_pipe, proc):
1640
2706
# Call "handle_ipc" for both data and EOF events
1641
gobject.io_add_watch(parent_pipe.fileno(),
1642
gobject.IO_IN | gobject.IO_HUP,
1643
functools.partial(self.handle_ipc,
1644
parent_pipe =
1645
parent_pipe,
1646
proc = proc))
1647
1648
def handle_ipc(self, source, condition, parent_pipe=None,
1649
proc = None, client_object=None):
1650
condition_names = {
1651
gobject.IO_IN: "IN", # There is data to read.
1652
gobject.IO_OUT: "OUT", # Data can be written (without
1653
# blocking).
1654
gobject.IO_PRI: "PRI", # There is urgent data to read.
1655
gobject.IO_ERR: "ERR", # Error condition.
1656
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1657
# broken, usually for pipes and
1658
# sockets).
1659
}
1660
conditions_string = ' | '.join(name
1661
for cond, name in
1662
condition_names.iteritems()
1663
if cond & condition)
1664
# error or the other end of multiprocessing.Pipe has closed
1665
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2707
GLib.io_add_watch(
2708
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2709
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2710
functools.partial(self.handle_ipc,
2711
parent_pipe=parent_pipe,
2712
proc=proc))
2713
2714
def handle_ipc(self, source, condition,
2715
parent_pipe=None,
2716
proc=None,
2717
client_object=None):
2718
# error, or the other end of multiprocessing.Pipe has closed
2719
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2720
# Wait for other process to exit
1666
2721
proc.join()
1667
2722
return False
1668
2723
1669
2724
# Read a request from the child
1670
2725
request = parent_pipe.recv()
1671
2726
command = request[0]
1672
2727
1673
2728
if command == 'init':
1674
fpr = request[1]
1675
address = request[2]
1676
1677
for c in self.clients:
1678
if c.fingerprint == fpr:
2729
key_id = request[1].decode("ascii")
2730
fpr = request[2].decode("ascii")
2731
address = request[3]
2732
2733
for c in self.clients.values():
2734
if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"
2735
"27AE41E4649B934CA495991B7852B855"):
2736
continue
2737
if key_id and c.key_id == key_id:
2738
client = c
2739
break
2740
if fpr and c.fingerprint == fpr:
1679
2741
client = c
1680
2742
break
1681
2743
else:
1682
logger.info("Client not found for fingerprint: %s, ad"
1683
"dress: %s", fpr, address)
2744
logger.info("Client not found for key ID: %s, address"
2745
": %s", key_id or fpr, address)
1684
2746
if self.use_dbus:
1685
2747
# Emit D-Bus signal
1686
mandos_dbus_service.ClientNotFound(fpr,
2748
mandos_dbus_service.ClientNotFound(key_id or fpr,
1687
2749
address[0])
1688
2750
parent_pipe.send(False)
1689
2751
return False
1690
1691
gobject.io_add_watch(parent_pipe.fileno(),
1692
gobject.IO_IN | gobject.IO_HUP,
1693
functools.partial(self.handle_ipc,
1694
parent_pipe =
1695
parent_pipe,
1696
proc = proc,
1697
client_object =
1698
client))
2752
2753
GLib.io_add_watch(
2754
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2755
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2756
functools.partial(self.handle_ipc,
2757
parent_pipe=parent_pipe,
2758
proc=proc,
2759
client_object=client))
1699
2760
parent_pipe.send(True)
1700
2761
# remove the old hook in favor of the new above hook on
1701
2762
# same fileno
1704
2765
funcname = request[1]
1705
2766
args = request[2]
1706
2767
kwargs = request[3]
1707
2768
1708
2769
parent_pipe.send(('data', getattr(client_object,
1709
2770
funcname)(*args,
1710
**kwargs)))
1711
2771
**kwargs)))
2772
1712
2773
if command == 'getattr':
1713
2774
attrname = request[1]
1714
if callable(client_object.__getattribute__(attrname)):
1715
parent_pipe.send(('function',))
2775
if isinstance(client_object.__getattribute__(attrname),
2776
collections.abc.Callable):
2777
parent_pipe.send(('function', ))
1716
2778
else:
1717
parent_pipe.send(('data', client_object
1718
.__getattribute__(attrname)))
1719
2779
parent_pipe.send((
2780
'data', client_object.__getattribute__(attrname)))
2781
1720
2782
if command == 'setattr':
1721
2783
attrname = request[1]
1722
2784
value = request[2]
1723
2785
setattr(client_object, attrname, value)
1724
2786
1725
2787
return True
1726
2788
1727
2789
2790
def rfc3339_duration_to_delta(duration):
2791
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2792
2793
>>> timedelta = datetime.timedelta
2794
>>> rfc3339_duration_to_delta("P7D") == timedelta(7)
2795
True
2796
>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)
2797
True
2798
>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)
2799
True
2800
>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)
2801
True
2802
>>> rfc3339_duration_to_delta("P1W") == timedelta(7)
2803
True
2804
>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)
2805
True
2806
>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)
2807
True
2808
>>> del timedelta
2809
"""
2810
2811
# Parsing an RFC 3339 duration with regular expressions is not
2812
# possible - there would have to be multiple places for the same
2813
# values, like seconds. The current code, while more esoteric, is
2814
# cleaner without depending on a parsing library. If Python had a
2815
# built-in library for parsing we would use it, but we'd like to
2816
# avoid excessive use of external libraries.
2817
2818
# New type for defining tokens, syntax, and semantics all-in-one
2819
Token = collections.namedtuple("Token", (
2820
"regexp", # To match token; if "value" is not None, must have
2821
# a "group" containing digits
2822
"value", # datetime.timedelta or None
2823
"followers")) # Tokens valid after this token
2824
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2825
# the "duration" ABNF definition in RFC 3339, Appendix A.
2826
token_end = Token(re.compile(r"$"), None, frozenset())
2827
token_second = Token(re.compile(r"(\d+)S"),
2828
datetime.timedelta(seconds=1),
2829
frozenset((token_end, )))
2830
token_minute = Token(re.compile(r"(\d+)M"),
2831
datetime.timedelta(minutes=1),
2832
frozenset((token_second, token_end)))
2833
token_hour = Token(re.compile(r"(\d+)H"),
2834
datetime.timedelta(hours=1),
2835
frozenset((token_minute, token_end)))
2836
token_time = Token(re.compile(r"T"),
2837
None,
2838
frozenset((token_hour, token_minute,
2839
token_second)))
2840
token_day = Token(re.compile(r"(\d+)D"),
2841
datetime.timedelta(days=1),
2842
frozenset((token_time, token_end)))
2843
token_month = Token(re.compile(r"(\d+)M"),
2844
datetime.timedelta(weeks=4),
2845
frozenset((token_day, token_end)))
2846
token_year = Token(re.compile(r"(\d+)Y"),
2847
datetime.timedelta(weeks=52),
2848
frozenset((token_month, token_end)))
2849
token_week = Token(re.compile(r"(\d+)W"),
2850
datetime.timedelta(weeks=1),
2851
frozenset((token_end, )))
2852
token_duration = Token(re.compile(r"P"), None,
2853
frozenset((token_year, token_month,
2854
token_day, token_time,
2855
token_week)))
2856
# Define starting values:
2857
# Value so far
2858
value = datetime.timedelta()
2859
found_token = None
2860
# Following valid tokens
2861
followers = frozenset((token_duration, ))
2862
# String left to parse
2863
s = duration
2864
# Loop until end token is found
2865
while found_token is not token_end:
2866
# Search for any currently valid tokens
2867
for token in followers:
2868
match = token.regexp.match(s)
2869
if match is not None:
2870
# Token found
2871
if token.value is not None:
2872
# Value found, parse digits
2873
factor = int(match.group(1), 10)
2874
# Add to value so far
2875
value += factor * token.value
2876
# Strip token from string
2877
s = token.regexp.sub("", s, 1)
2878
# Go to found token
2879
found_token = token
2880
# Set valid next tokens
2881
followers = found_token.followers
2882
break
2883
else:
2884
# No currently valid tokens were found
2885
raise ValueError("Invalid RFC 3339 duration: {!r}"
2886
.format(duration))
2887
# End token found
2888
return value
2889
2890
1728
2891
def string_to_delta(interval):
1729
2892
"""Parse a string and return a datetime.timedelta
1730
1731
>>> string_to_delta('7d')
1732
datetime.timedelta(7)
1733
>>> string_to_delta('60s')
1734
datetime.timedelta(0, 60)
1735
>>> string_to_delta('60m')
1736
datetime.timedelta(0, 3600)
1737
>>> string_to_delta('24h')
1738
datetime.timedelta(1)
1739
>>> string_to_delta('1w')
1740
datetime.timedelta(7)
1741
>>> string_to_delta('5m 30s')
1742
datetime.timedelta(0, 330)
2893
2894
>>> string_to_delta('7d') == datetime.timedelta(7)
2895
True
2896
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2897
True
2898
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2899
True
2900
>>> string_to_delta('24h') == datetime.timedelta(1)
2901
True
2902
>>> string_to_delta('1w') == datetime.timedelta(7)
2903
True
2904
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2905
True
1743
2906
"""
2907
2908
try:
2909
return rfc3339_duration_to_delta(interval)
2910
except ValueError:
2911
pass
2912
1744
2913
timevalue = datetime.timedelta(0)
1745
2914
for s in interval.split():
1746
2915
try:
1747
suffix = unicode(s[-1])
2916
suffix = s[-1]
1748
2917
value = int(s[:-1])
1749
2918
if suffix == "d":
1750
2919
delta = datetime.timedelta(value)
1757
2926
elif suffix == "w":
1758
2927
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1759
2928
else:
1760
raise ValueError("Unknown suffix %r" % suffix)
1761
except (ValueError, IndexError) as e:
2929
raise ValueError("Unknown suffix {!r}".format(suffix))
2930
except IndexError as e:
1762
2931
raise ValueError(*(e.args))
1763
2932
timevalue += delta
1764
2933
return timevalue
1765
2934
1766
2935
1767
def if_nametoindex(interface):
1768
"""Call the C function if_nametoindex(), or equivalent
1769
1770
Note: This function cannot accept a unicode string."""
1771
global if_nametoindex
1772
try:
1773
if_nametoindex = (ctypes.cdll.LoadLibrary
1774
(ctypes.util.find_library("c"))
1775
.if_nametoindex)
1776
except (OSError, AttributeError):
1777
logger.warning("Doing if_nametoindex the hard way")
1778
def if_nametoindex(interface):
1779
"Get an interface index the hard way, i.e. using fcntl()"
1780
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1781
with contextlib.closing(socket.socket()) as s:
1782
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1783
struct.pack(str("16s16x"),
1784
interface))
1785
interface_index = struct.unpack(str("I"),
1786
ifreq[16:20])[0]
1787
return interface_index
1788
return if_nametoindex(interface)
1789
1790
1791
def daemon(nochdir = False, noclose = False):
2936
def daemon(nochdir=False, noclose=False):
1792
2937
"""See daemon(3). Standard BSD Unix function.
1793
2938
1794
2939
This should really exist as os.daemon, but it doesn't (yet)."""
1795
2940
if os.fork():
1796
2941
sys.exit()
1801
2946
sys.exit()
1802
2947
if not noclose:
1803
2948
# Close all standard open file descriptors
1804
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2949
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1805
2950
if not stat.S_ISCHR(os.fstat(null).st_mode):
1806
2951
raise OSError(errno.ENODEV,
1807
"%s not a character device"
1808
% os.path.devnull)
2952
"{} not a character device"
2953
.format(os.devnull))
1809
2954
os.dup2(null, sys.stdin.fileno())
1810
2955
os.dup2(null, sys.stdout.fileno())
1811
2956
os.dup2(null, sys.stderr.fileno())
1814
2959
1815
2960
1816
2961
def main():
1817
2962
1818
2963
##################################################################
1819
2964
# Parsing of options, both command line and config file
1820
2965
1821
2966
parser = argparse.ArgumentParser()
1822
2967
parser.add_argument("-v", "--version", action="version",
1823
version = "%%(prog)s %s" % version,
2968
version="%(prog)s {}".format(version),
1824
2969
help="show version number and exit")
1825
2970
parser.add_argument("-i", "--interface", metavar="IF",
1826
2971
help="Bind to interface IF")
1832
2977
help="Run self-test")
1833
2978
parser.add_argument("--debug", action="store_true",
1834
2979
help="Debug mode; run in foreground and log"
1835
" to terminal")
2980
" to terminal", default=None)
1836
2981
parser.add_argument("--debuglevel", metavar="LEVEL",
1837
2982
help="Debug level for stdout output")
1838
2983
parser.add_argument("--priority", help="GnuTLS"
1845
2990
" files")
1846
2991
parser.add_argument("--no-dbus", action="store_false",
1847
2992
dest="use_dbus", help="Do not provide D-Bus"
1848
" system bus interface")
2993
" system bus interface", default=None)
1849
2994
parser.add_argument("--no-ipv6", action="store_false",
1850
dest="use_ipv6", help="Do not use IPv6")
2995
dest="use_ipv6", help="Do not use IPv6",
2996
default=None)
2997
parser.add_argument("--no-restore", action="store_false",
2998
dest="restore", help="Do not restore stored"
2999
" state", default=None)
3000
parser.add_argument("--socket", type=int,
3001
help="Specify a file descriptor to a network"
3002
" socket to use instead of creating one")
3003
parser.add_argument("--statedir", metavar="DIR",
3004
help="Directory to save/restore state in")
3005
parser.add_argument("--foreground", action="store_true",
3006
help="Run in foreground", default=None)
3007
parser.add_argument("--no-zeroconf", action="store_false",
3008
dest="zeroconf", help="Do not use Zeroconf",
3009
default=None)
3010
1851
3011
options = parser.parse_args()
1852
1853
if options.check:
1854
import doctest
1855
doctest.testmod()
1856
sys.exit()
1857
3012
1858
3013
# Default values for config file for server-global settings
1859
server_defaults = { "interface": "",
1860
"address": "",
1861
"port": "",
1862
"debug": "False",
1863
"priority":
1864
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1865
"servicename": "Mandos",
1866
"use_dbus": "True",
1867
"use_ipv6": "True",
1868
"debuglevel": "",
1869
}
1870
3014
if gnutls.has_rawpk:
3015
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3016
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3017
else:
3018
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3019
":+SIGN-DSA-SHA256")
3020
server_defaults = {"interface": "",
3021
"address": "",
3022
"port": "",
3023
"debug": "False",
3024
"priority": priority,
3025
"servicename": "Mandos",
3026
"use_dbus": "True",
3027
"use_ipv6": "True",
3028
"debuglevel": "",
3029
"restore": "True",
3030
"socket": "",
3031
"statedir": "/var/lib/mandos",
3032
"foreground": "False",
3033
"zeroconf": "True",
3034
}
3035
del priority
3036
1871
3037
# Parse config file for server-global settings
1872
server_config = configparser.SafeConfigParser(server_defaults)
3038
server_config = configparser.ConfigParser(server_defaults)
1873
3039
del server_defaults
1874
server_config.read(os.path.join(options.configdir,
1875
"mandos.conf"))
1876
# Convert the SafeConfigParser object to a dict
3040
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3041
# Convert the ConfigParser object to a dict
1877
3042
server_settings = server_config.defaults()
1878
3043
# Use the appropriate methods on the non-string config options
1879
for option in ("debug", "use_dbus", "use_ipv6"):
3044
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3045
"foreground", "zeroconf"):
1880
3046
server_settings[option] = server_config.getboolean("DEFAULT",
1881
3047
option)
1882
3048
if server_settings["port"]:
1883
3049
server_settings["port"] = server_config.getint("DEFAULT",
1884
3050
"port")
3051
if server_settings["socket"]:
3052
server_settings["socket"] = server_config.getint("DEFAULT",
3053
"socket")
3054
# Later, stdin will, and stdout and stderr might, be dup'ed
3055
# over with an opened os.devnull. But we don't want this to
3056
# happen with a supplied network socket.
3057
if 0 <= server_settings["socket"] <= 2:
3058
server_settings["socket"] = os.dup(server_settings
3059
["socket"])
1885
3060
del server_config
1886
3061
1887
3062
# Override the settings from the config file with command line
1888
3063
# options, if set.
1889
3064
for option in ("interface", "address", "port", "debug",
1890
"priority", "servicename", "configdir",
1891
"use_dbus", "use_ipv6", "debuglevel"):
3065
"priority", "servicename", "configdir", "use_dbus",
3066
"use_ipv6", "debuglevel", "restore", "statedir",
3067
"socket", "foreground", "zeroconf"):
1892
3068
value = getattr(options, option)
1893
3069
if value is not None:
1894
3070
server_settings[option] = value
1895
3071
del options
1896
3072
# Force all strings to be unicode
1897
3073
for option in server_settings.keys():
1898
if type(server_settings[option]) is str:
1899
server_settings[option] = unicode(server_settings[option])
3074
if isinstance(server_settings[option], bytes):
3075
server_settings[option] = (server_settings[option]
3076
.decode("utf-8"))
3077
# Force all boolean options to be boolean
3078
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3079
"foreground", "zeroconf"):
3080
server_settings[option] = bool(server_settings[option])
3081
# Debug implies foreground
3082
if server_settings["debug"]:
3083
server_settings["foreground"] = True
1900
3084
# Now we have our good server settings in "server_settings"
1901
3085
1902
3086
##################################################################
1903
3087
3088
if (not server_settings["zeroconf"]
3089
and not (server_settings["port"]
3090
or server_settings["socket"] != "")):
3091
parser.error("Needs port or socket to work without Zeroconf")
3092
1904
3093
# For convenience
1905
3094
debug = server_settings["debug"]
1906
3095
debuglevel = server_settings["debuglevel"]
1907
3096
use_dbus = server_settings["use_dbus"]
1908
3097
use_ipv6 = server_settings["use_ipv6"]
1909
3098
stored_state_path = os.path.join(server_settings["statedir"],
3099
stored_state_file)
3100
foreground = server_settings["foreground"]
3101
zeroconf = server_settings["zeroconf"]
3102
3103
if debug:
3104
initlogger(debug, logging.DEBUG)
3105
else:
3106
if not debuglevel:
3107
initlogger(debug)
3108
else:
3109
level = getattr(logging, debuglevel.upper())
3110
initlogger(debug, level)
3111
1910
3112
if server_settings["servicename"] != "Mandos":
1911
syslogger.setFormatter(logging.Formatter
1912
('Mandos (%s) [%%(process)d]:'
1913
' %%(levelname)s: %%(message)s'
1914
% server_settings["servicename"]))
1915
3113
syslogger.setFormatter(
3114
logging.Formatter('Mandos ({}) [%(process)d]:'
3115
' %(levelname)s: %(message)s'.format(
3116
server_settings["servicename"])))
3117
1916
3118
# Parse config file with clients
1917
client_defaults = { "timeout": "5m",
1918
"extended_timeout": "15m",
1919
"interval": "2m",
1920
"checker": "fping -q -- %%(host)s",
1921
"host": "",
1922
"approval_delay": "0s",
1923
"approval_duration": "1s",
1924
}
1925
client_config = configparser.SafeConfigParser(client_defaults)
3119
client_config = configparser.ConfigParser(Client.client_defaults)
1926
3120
client_config.read(os.path.join(server_settings["configdir"],
1927
3121
"clients.conf"))
1928
3122
1929
3123
global mandos_dbus_service
1930
3124
mandos_dbus_service = None
1931
1932
tcp_server = MandosServer((server_settings["address"],
1933
server_settings["port"]),
1934
ClientHandler,
1935
interface=(server_settings["interface"]
1936
or None),
1937
use_ipv6=use_ipv6,
1938
gnutls_priority=
1939
server_settings["priority"],
1940
use_dbus=use_dbus)
1941
if not debug:
1942
pidfilename = "/var/run/mandos.pid"
1943
try:
1944
pidfile = open(pidfilename, "w")
1945
except IOError:
1946
logger.error("Could not open file %r", pidfilename)
1947
1948
try:
1949
uid = pwd.getpwnam("_mandos").pw_uid
1950
gid = pwd.getpwnam("_mandos").pw_gid
1951
except KeyError:
1952
try:
1953
uid = pwd.getpwnam("mandos").pw_uid
1954
gid = pwd.getpwnam("mandos").pw_gid
3125
3126
socketfd = None
3127
if server_settings["socket"] != "":
3128
socketfd = server_settings["socket"]
3129
tcp_server = MandosServer(
3130
(server_settings["address"], server_settings["port"]),
3131
ClientHandler,
3132
interface=(server_settings["interface"] or None),
3133
use_ipv6=use_ipv6,
3134
gnutls_priority=server_settings["priority"],
3135
use_dbus=use_dbus,
3136
socketfd=socketfd)
3137
if not foreground:
3138
pidfilename = "/run/mandos.pid"
3139
if not os.path.isdir("/run/."):
3140
pidfilename = "/var/run/mandos.pid"
3141
pidfile = None
3142
try:
3143
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3144
except IOError as e:
3145
logger.error("Could not open file %r", pidfilename,
3146
exc_info=e)
3147
3148
for name, group in (("_mandos", "_mandos"),
3149
("mandos", "mandos"),
3150
("nobody", "nogroup")):
3151
try:
3152
uid = pwd.getpwnam(name).pw_uid
3153
gid = pwd.getpwnam(group).pw_gid
3154
break
1955
3155
except KeyError:
1956
try:
1957
uid = pwd.getpwnam("nobody").pw_uid
1958
gid = pwd.getpwnam("nobody").pw_gid
1959
except KeyError:
1960
uid = 65534
1961
gid = 65534
3156
continue
3157
else:
3158
uid = 65534
3159
gid = 65534
1962
3160
try:
1963
3161
os.setgid(gid)
1964
3162
os.setuid(uid)
3163
if debug:
3164
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3165
gid))
1965
3166
except OSError as error:
1966
if error[0] != errno.EPERM:
1967
raise error
1968
1969
if not debug and not debuglevel:
1970
syslogger.setLevel(logging.WARNING)
1971
console.setLevel(logging.WARNING)
1972
if debuglevel:
1973
level = getattr(logging, debuglevel.upper())
1974
syslogger.setLevel(level)
1975
console.setLevel(level)
1976
3167
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3168
.format(uid, gid, os.strerror(error.errno)))
3169
if error.errno != errno.EPERM:
3170
raise
3171
1977
3172
if debug:
1978
3173
# Enable all possible GnuTLS debugging
1979
3174
1980
3175
# "Use a log level over 10 to enable all debugging options."
1981
3176
# - GnuTLS manual
1982
gnutls.library.functions.gnutls_global_set_log_level(11)
1983
1984
@gnutls.library.types.gnutls_log_func
3177
gnutls.global_set_log_level(11)
3178
3179
@gnutls.log_func
1985
3180
def debug_gnutls(level, string):
1986
3181
logger.debug("GnuTLS: %s", string[:-1])
1987
1988
(gnutls.library.functions
1989
.gnutls_global_set_log_function(debug_gnutls))
1990
3182
3183
gnutls.global_set_log_function(debug_gnutls)
3184
1991
3185
# Redirect stdin so all checkers get /dev/null
1992
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3186
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1993
3187
os.dup2(null, sys.stdin.fileno())
1994
3188
if null > 2:
1995
3189
os.close(null)
1996
else:
1997
# No console logging
1998
logger.removeHandler(console)
1999
3190
2000
3191
# Need to fork before connecting to D-Bus
2001
if not debug:
3192
if not foreground:
2002
3193
# Close all input and output, do double fork, etc.
2003
3194
daemon()
2004
3195
3196
if gi.version_info < (3, 10, 2):
3197
# multiprocessing will use threads, so before we use GLib we
3198
# need to inform GLib that threads will be used.
3199
GLib.threads_init()
3200
2005
3201
global main_loop
2006
3202
# From the Avahi example code
2007
DBusGMainLoop(set_as_default=True )
2008
main_loop = gobject.MainLoop()
3203
DBusGMainLoop(set_as_default=True)
3204
main_loop = GLib.MainLoop()
2009
3205
bus = dbus.SystemBus()
2010
3206
# End of Avahi example code
2011
3207
if use_dbus:
2012
3208
try:
2013
3209
bus_name = dbus.service.BusName("se.recompile.Mandos",
2014
bus, do_not_queue=True)
2015
old_bus_name = (dbus.service.BusName
2016
("se.bsnet.fukt.Mandos", bus,
2017
do_not_queue=True))
2018
except dbus.exceptions.NameExistsException as e:
2019
logger.error(unicode(e) + ", disabling D-Bus")
3210
bus,
3211
do_not_queue=True)
3212
old_bus_name = dbus.service.BusName(
3213
"se.bsnet.fukt.Mandos", bus,
3214
do_not_queue=True)
3215
except dbus.exceptions.DBusException as e:
3216
logger.error("Disabling D-Bus:", exc_info=e)
2020
3217
use_dbus = False
2021
3218
server_settings["use_dbus"] = False
2022
3219
tcp_server.use_dbus = False
2023
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2024
service = AvahiService(name = server_settings["servicename"],
2025
servicetype = "_mandos._tcp",
2026
protocol = protocol, bus = bus)
2027
if server_settings["interface"]:
2028
service.interface = (if_nametoindex
2029
(str(server_settings["interface"])))
2030
3220
if zeroconf:
3221
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3222
service = AvahiServiceToSyslog(
3223
name=server_settings["servicename"],
3224
servicetype="_mandos._tcp",
3225
protocol=protocol,
3226
bus=bus)
3227
if server_settings["interface"]:
3228
service.interface = if_nametoindex(
3229
server_settings["interface"].encode("utf-8"))
3230
2031
3231
global multiprocessing_manager
2032
3232
multiprocessing_manager = multiprocessing.Manager()
2033
3233
2034
3234
client_class = Client
2035
3235
if use_dbus:
2036
client_class = functools.partial(ClientDBusTransitional,
2037
bus = bus)
2038
def client_config_items(config, section):
2039
special_settings = {
2040
"approved_by_default":
2041
lambda: config.getboolean(section,
2042
"approved_by_default"),
2043
}
2044
for name, value in config.items(section):
3236
client_class = functools.partial(ClientDBus, bus=bus)
3237
3238
client_settings = Client.config_parser(client_config)
3239
old_client_settings = {}
3240
clients_data = {}
3241
3242
# This is used to redirect stdout and stderr for checker processes
3243
global wnull
3244
wnull = open(os.devnull, "w") # A writable /dev/null
3245
# Only used if server is running in foreground but not in debug
3246
# mode
3247
if debug or not foreground:
3248
wnull.close()
3249
3250
# Get client data and settings from last running state.
3251
if server_settings["restore"]:
3252
try:
3253
with open(stored_state_path, "rb") as stored_state:
3254
if sys.version_info.major == 2:
3255
clients_data, old_client_settings = pickle.load(
3256
stored_state)
3257
else:
3258
bytes_clients_data, bytes_old_client_settings = (
3259
pickle.load(stored_state, encoding="bytes"))
3260
# Fix bytes to strings
3261
# clients_data
3262
# .keys()
3263
clients_data = {(key.decode("utf-8")
3264
if isinstance(key, bytes)
3265
else key): value
3266
for key, value in
3267
bytes_clients_data.items()}
3268
del bytes_clients_data
3269
for key in clients_data:
3270
value = {(k.decode("utf-8")
3271
if isinstance(k, bytes) else k): v
3272
for k, v in
3273
clients_data[key].items()}
3274
clients_data[key] = value
3275
# .client_structure
3276
value["client_structure"] = [
3277
(s.decode("utf-8")
3278
if isinstance(s, bytes)
3279
else s) for s in
3280
value["client_structure"]]
3281
# .name, .host, and .checker_command
3282
for k in ("name", "host", "checker_command"):
3283
if isinstance(value[k], bytes):
3284
value[k] = value[k].decode("utf-8")
3285
if "key_id" not in value:
3286
value["key_id"] = ""
3287
elif "fingerprint" not in value:
3288
value["fingerprint"] = ""
3289
# old_client_settings
3290
# .keys()
3291
old_client_settings = {
3292
(key.decode("utf-8")
3293
if isinstance(key, bytes)
3294
else key): value
3295
for key, value in
3296
bytes_old_client_settings.items()}
3297
del bytes_old_client_settings
3298
# .host and .checker_command
3299
for value in old_client_settings.values():
3300
for attribute in ("host", "checker_command"):
3301
if isinstance(value[attribute], bytes):
3302
value[attribute] = (value[attribute]
3303
.decode("utf-8"))
3304
os.remove(stored_state_path)
3305
except IOError as e:
3306
if e.errno == errno.ENOENT:
3307
logger.warning("Could not load persistent state:"
3308
" {}".format(os.strerror(e.errno)))
3309
else:
3310
logger.critical("Could not load persistent state:",
3311
exc_info=e)
3312
raise
3313
except EOFError as e:
3314
logger.warning("Could not load persistent state: "
3315
"EOFError:",
3316
exc_info=e)
3317
3318
with PGPEngine() as pgp:
3319
for client_name, client in clients_data.items():
3320
# Skip removed clients
3321
if client_name not in client_settings:
3322
continue
3323
3324
# Decide which value to use after restoring saved state.
3325
# We have three different values: Old config file,
3326
# new config file, and saved state.
3327
# New config value takes precedence if it differs from old
3328
# config value, otherwise use saved state.
3329
for name, value in client_settings[client_name].items():
3330
try:
3331
# For each value in new config, check if it
3332
# differs from the old config value (Except for
3333
# the "secret" attribute)
3334
if (name != "secret"
3335
and (value !=
3336
old_client_settings[client_name][name])):
3337
client[name] = value
3338
except KeyError:
3339
pass
3340
3341
# Clients who has passed its expire date can still be
3342
# enabled if its last checker was successful. A Client
3343
# whose checker succeeded before we stored its state is
3344
# assumed to have successfully run all checkers during
3345
# downtime.
3346
if client["enabled"]:
3347
if datetime.datetime.utcnow() >= client["expires"]:
3348
if not client["last_checked_ok"]:
3349
logger.warning(
3350
"disabling client {} - Client never "
3351
"performed a successful checker".format(
3352
client_name))
3353
client["enabled"] = False
3354
elif client["last_checker_status"] != 0:
3355
logger.warning(
3356
"disabling client {} - Client last"
3357
" checker failed with error code"
3358
" {}".format(
3359
client_name,
3360
client["last_checker_status"]))
3361
client["enabled"] = False
3362
else:
3363
client["expires"] = (
3364
datetime.datetime.utcnow()
3365
+ client["timeout"])
3366
logger.debug("Last checker succeeded,"
3367
" keeping {} enabled".format(
3368
client_name))
2045
3369
try:
2046
yield (name, special_settings[name]())
2047
except KeyError:
2048
yield (name, value)
2049
2050
tcp_server.clients.update(set(
2051
client_class(name = section,
2052
config= dict(client_config_items(
2053
client_config, section)))
2054
for section in client_config.sections()))
3370
client["secret"] = pgp.decrypt(
3371
client["encrypted_secret"],
3372
client_settings[client_name]["secret"])
3373
except PGPError:
3374
# If decryption fails, we use secret from new settings
3375
logger.debug("Failed to decrypt {} old secret".format(
3376
client_name))
3377
client["secret"] = (client_settings[client_name]
3378
["secret"])
3379
3380
# Add/remove clients based on new changes made to config
3381
for client_name in (set(old_client_settings)
3382
- set(client_settings)):
3383
del clients_data[client_name]
3384
for client_name in (set(client_settings)
3385
- set(old_client_settings)):
3386
clients_data[client_name] = client_settings[client_name]
3387
3388
# Create all client objects
3389
for client_name, client in clients_data.items():
3390
tcp_server.clients[client_name] = client_class(
3391
name=client_name,
3392
settings=client,
3393
server_settings=server_settings)
3394
2055
3395
if not tcp_server.clients:
2056
3396
logger.warning("No clients defined")
2057
2058
if not debug:
2059
try:
2060
with pidfile:
2061
pid = os.getpid()
2062
pidfile.write(str(pid) + "\n".encode("utf-8"))
2063
del pidfile
2064
except IOError:
2065
logger.error("Could not write to file %r with PID %d",
2066
pidfilename, pid)
2067
except NameError:
2068
# "pidfile" was never created
2069
pass
3397
3398
if not foreground:
3399
if pidfile is not None:
3400
pid = os.getpid()
3401
try:
3402
with pidfile:
3403
print(pid, file=pidfile)
3404
except IOError:
3405
logger.error("Could not write to file %r with PID %d",
3406
pidfilename, pid)
3407
del pidfile
2070
3408
del pidfilename
2071
2072
signal.signal(signal.SIGINT, signal.SIG_IGN)
2073
2074
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2075
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2076
3409
3410
for termsig in (signal.SIGHUP, signal.SIGTERM):
3411
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3412
lambda: main_loop.quit() and False)
3413
2077
3414
if use_dbus:
2078
class MandosDBusService(dbus.service.Object):
3415
3416
@alternate_dbus_interfaces(
3417
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3418
class MandosDBusService(DBusObjectWithObjectManager):
2079
3419
"""A D-Bus proxy object"""
3420
2080
3421
def __init__(self):
2081
3422
dbus.service.Object.__init__(self, bus, "/")
3423
2082
3424
_interface = "se.recompile.Mandos"
2083
3425
2084
3426
@dbus.service.signal(_interface, signature="o")
2085
3427
def ClientAdded(self, objpath):
2086
3428
"D-Bus signal"
2087
3429
pass
2088
3430
2089
3431
@dbus.service.signal(_interface, signature="ss")
2090
def ClientNotFound(self, fingerprint, address):
3432
def ClientNotFound(self, key_id, address):
2091
3433
"D-Bus signal"
2092
3434
pass
2093
3435
3436
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3437
"true"})
2094
3438
@dbus.service.signal(_interface, signature="os")
2095
3439
def ClientRemoved(self, objpath, name):
2096
3440
"D-Bus signal"
2097
3441
pass
2098
3442
3443
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3444
"true"})
2099
3445
@dbus.service.method(_interface, out_signature="ao")
2100
3446
def GetAllClients(self):
2101
3447
"D-Bus method"
2102
return dbus.Array(c.dbus_object_path
2103
for c in tcp_server.clients)
2104
3448
return dbus.Array(c.dbus_object_path for c in
3449
tcp_server.clients.values())
3450
3451
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3452
"true"})
2105
3453
@dbus.service.method(_interface,
2106
3454
out_signature="a{oa{sv}}")
2107
3455
def GetAllClientsWithProperties(self):
2108
3456
"D-Bus method"
2109
3457
return dbus.Dictionary(
2110
((c.dbus_object_path, c.GetAll(""))
2111
for c in tcp_server.clients),
3458
{c.dbus_object_path: c.GetAll(
3459
"se.recompile.Mandos.Client")
3460
for c in tcp_server.clients.values()},
2112
3461
signature="oa{sv}")
2113
3462
2114
3463
@dbus.service.method(_interface, in_signature="o")
2115
3464
def RemoveClient(self, object_path):
2116
3465
"D-Bus method"
2117
for c in tcp_server.clients:
3466
for c in tcp_server.clients.values():
2118
3467
if c.dbus_object_path == object_path:
2119
tcp_server.clients.remove(c)
3468
del tcp_server.clients[c.name]
2120
3469
c.remove_from_connection()
2121
# Don't signal anything except ClientRemoved
3470
# Don't signal the disabling
2122
3471
c.disable(quiet=True)
2123
# Emit D-Bus signal
2124
self.ClientRemoved(object_path, c.name)
3472
# Emit D-Bus signal for removal
3473
self.client_removed_signal(c)
2125
3474
return
2126
3475
raise KeyError(object_path)
2127
3476
2128
3477
del _interface
2129
2130
class MandosDBusServiceTransitional(MandosDBusService):
2131
__metaclass__ = AlternateDBusNamesMetaclass
2132
mandos_dbus_service = MandosDBusServiceTransitional()
2133
3478
3479
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3480
out_signature="a{oa{sa{sv}}}")
3481
def GetManagedObjects(self):
3482
"""D-Bus method"""
3483
return dbus.Dictionary(
3484
{client.dbus_object_path:
3485
dbus.Dictionary(
3486
{interface: client.GetAll(interface)
3487
for interface in
3488
client._get_all_interface_names()})
3489
for client in tcp_server.clients.values()})
3490
3491
def client_added_signal(self, client):
3492
"""Send the new standard signal and the old signal"""
3493
if use_dbus:
3494
# New standard signal
3495
self.InterfacesAdded(
3496
client.dbus_object_path,
3497
dbus.Dictionary(
3498
{interface: client.GetAll(interface)
3499
for interface in
3500
client._get_all_interface_names()}))
3501
# Old signal
3502
self.ClientAdded(client.dbus_object_path)
3503
3504
def client_removed_signal(self, client):
3505
"""Send the new standard signal and the old signal"""
3506
if use_dbus:
3507
# New standard signal
3508
self.InterfacesRemoved(
3509
client.dbus_object_path,
3510
client._get_all_interface_names())
3511
# Old signal
3512
self.ClientRemoved(client.dbus_object_path,
3513
client.name)
3514
3515
mandos_dbus_service = MandosDBusService()
3516
3517
# Save modules to variables to exempt the modules from being
3518
# unloaded before the function registered with atexit() is run.
3519
mp = multiprocessing
3520
wn = wnull
3521
2134
3522
def cleanup():
2135
3523
"Cleanup function; run on exit"
2136
service.cleanup()
2137
2138
multiprocessing.active_children()
3524
if zeroconf:
3525
service.cleanup()
3526
3527
mp.active_children()
3528
wn.close()
3529
if not (tcp_server.clients or client_settings):
3530
return
3531
3532
# Store client before exiting. Secrets are encrypted with key
3533
# based on what config file has. If config file is
3534
# removed/edited, old secret will thus be unrecovable.
3535
clients = {}
3536
with PGPEngine() as pgp:
3537
for client in tcp_server.clients.values():
3538
key = client_settings[client.name]["secret"]
3539
client.encrypted_secret = pgp.encrypt(client.secret,
3540
key)
3541
client_dict = {}
3542
3543
# A list of attributes that can not be pickled
3544
# + secret.
3545
exclude = {"bus", "changedstate", "secret",
3546
"checker", "server_settings"}
3547
for name, typ in inspect.getmembers(dbus.service
3548
.Object):
3549
exclude.add(name)
3550
3551
client_dict["encrypted_secret"] = (client
3552
.encrypted_secret)
3553
for attr in client.client_structure:
3554
if attr not in exclude:
3555
client_dict[attr] = getattr(client, attr)
3556
3557
clients[client.name] = client_dict
3558
del client_settings[client.name]["secret"]
3559
3560
try:
3561
with tempfile.NamedTemporaryFile(
3562
mode='wb',
3563
suffix=".pickle",
3564
prefix='clients-',
3565
dir=os.path.dirname(stored_state_path),
3566
delete=False) as stored_state:
3567
pickle.dump((clients, client_settings), stored_state,
3568
protocol=2)
3569
tempname = stored_state.name
3570
os.rename(tempname, stored_state_path)
3571
except (IOError, OSError) as e:
3572
if not debug:
3573
try:
3574
os.remove(tempname)
3575
except NameError:
3576
pass
3577
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3578
logger.warning("Could not save persistent state: {}"
3579
.format(os.strerror(e.errno)))
3580
else:
3581
logger.warning("Could not save persistent state:",
3582
exc_info=e)
3583
raise
3584
3585
# Delete all clients, and settings from config
2139
3586
while tcp_server.clients:
2140
client = tcp_server.clients.pop()
3587
name, client = tcp_server.clients.popitem()
2141
3588
if use_dbus:
2142
3589
client.remove_from_connection()
2143
client.disable_hook = None
2144
# Don't signal anything except ClientRemoved
3590
# Don't signal the disabling
2145
3591
client.disable(quiet=True)
3592
# Emit D-Bus signal for removal
2146
3593
if use_dbus:
2147
# Emit D-Bus signal
2148
mandos_dbus_service.ClientRemoved(client
2149
.dbus_object_path,
2150
client.name)
2151
3594
mandos_dbus_service.client_removed_signal(client)
3595
client_settings.clear()
3596
2152
3597
atexit.register(cleanup)
2153
2154
for client in tcp_server.clients:
3598
3599
for client in tcp_server.clients.values():
2155
3600
if use_dbus:
2156
# Emit D-Bus signal
2157
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2158
client.enable()
2159
3601
# Emit D-Bus signal for adding
3602
mandos_dbus_service.client_added_signal(client)
3603
# Need to initiate checking of clients
3604
if client.enabled:
3605
client.init_checker()
3606
2160
3607
tcp_server.enable()
2161
3608
tcp_server.server_activate()
2162
3609
2163
3610
# Find out what port we got
2164
service.port = tcp_server.socket.getsockname()[1]
3611
if zeroconf:
3612
service.port = tcp_server.socket.getsockname()[1]
2165
3613
if use_ipv6:
2166
3614
logger.info("Now listening on address %r, port %d,"
2167
" flowinfo %d, scope_id %d"
2168
% tcp_server.socket.getsockname())
3615
" flowinfo %d, scope_id %d",
3616
*tcp_server.socket.getsockname())
2169
3617
else: # IPv4
2170
logger.info("Now listening on address %r, port %d"
2171
% tcp_server.socket.getsockname())
2172
2173
#service.interface = tcp_server.socket.getsockname()[3]
2174
3618
logger.info("Now listening on address %r, port %d",
3619
*tcp_server.socket.getsockname())
3620
3621
# service.interface = tcp_server.socket.getsockname()[3]
3622
2175
3623
try:
2176
# From the Avahi example code
2177
try:
2178
service.activate()
2179
except dbus.exceptions.DBusException as error:
2180
logger.critical("DBusException: %s", error)
2181
cleanup()
2182
sys.exit(1)
2183
# End of Avahi example code
2184
2185
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2186
lambda *args, **kwargs:
2187
(tcp_server.handle_request
2188
(*args[2:], **kwargs) or True))
2189
3624
if zeroconf:
3625
# From the Avahi example code
3626
try:
3627
service.activate()
3628
except dbus.exceptions.DBusException as error:
3629
logger.critical("D-Bus Exception", exc_info=error)
3630
cleanup()
3631
sys.exit(1)
3632
# End of Avahi example code
3633
3634
GLib.io_add_watch(
3635
GLib.IOChannel.unix_new(tcp_server.fileno()),
3636
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3637
lambda *args, **kwargs: (tcp_server.handle_request
3638
(*args[2:], **kwargs) or True))
3639
2190
3640
logger.debug("Starting main loop")
2191
3641
main_loop.run()
2192
3642
except AvahiError as error:
2193
logger.critical("AvahiError: %s", error)
3643
logger.critical("Avahi Error", exc_info=error)
2194
3644
cleanup()
2195
3645
sys.exit(1)
2196
3646
except KeyboardInterrupt:
2201
3651
# Must run before the D-Bus bus name gets deregistered
2202
3652
cleanup()
2203
3653
3654
3655
def should_only_run_tests():
3656
parser = argparse.ArgumentParser(add_help=False)
3657
parser.add_argument("--check", action='store_true')
3658
args, unknown_args = parser.parse_known_args()
3659
run_tests = args.check
3660
if run_tests:
3661
# Remove --check argument from sys.argv
3662
sys.argv[1:] = unknown_args
3663
return run_tests
3664
3665
# Add all tests from doctest strings
3666
def load_tests(loader, tests, none):
3667
import doctest
3668
tests.addTests(doctest.DocTestSuite())
3669
return tests
2204
3670
2205
3671
if __name__ == '__main__':
2206
main()
3672
try:
3673
if should_only_run_tests():
3674
# Call using ./mandos --check [--verbose]
3675
unittest.main()
3676
else:
3677
main()
3678
finally:
3679
logging.shutdown()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0