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- Committer: teddy at recompile
- Date: 2020-02-05 21:39:28 UTC
- Revision ID: teddy@recompile.se-20200205213928-vpvt0fwfg47ikv6f
Allow users to alter ask-password-mandos.service
If a user uses dracut with systemd and wishes to modify the options
passed to password-agent(8mandos) or mandos-client(8mandos), they
should be able to do so by simply creating a file
/etc/systemd/system/ask-password-mandos.service.d/override.conf,
containing, for instance:
[Service]
Environment=MANDOS_CLIENT_OPTIONS=--debug
Adding PASSWORD_AGENT_OPTIONS should also be possible (but should not
normally be needed).
* dracut-module/ask-password-mandos.service ([Service]/ExecStart): Add
$PASSWORD_AGENT_OPTIONS before "--" and "$MANDOS_CLIENT_OPTIONS" to
end of line.
* dracut-module/module-setup.sh (install): Install all files named
/etc/systemd/system/ask-password-mandos.service.d/*.conf if any
exists. Also add --dh-params before $MANDOS_CLIENT_OPTIONS instead
of at end of line.
If a user uses dracut with systemd and wishes to modify the options
passed to password-agent(8mandos) or mandos-client(8mandos), they
should be able to do so by simply creating a file
/etc/systemd/system/ask-password-mandos.service.d/override.conf,
containing, for instance:
[Service]
Environment=MANDOS_CLIENT_OPTIONS=--debug
Adding PASSWORD_AGENT_OPTIONS should also be possible (but should not
normally be needed).
* dracut-module/ask-password-mandos.service ([Service]/ExecStart): Add
$PASSWORD_AGENT_OPTIONS before "--" and "$MANDOS_CLIENT_OPTIONS" to
end of line.
* dracut-module/module-setup.sh (install): Install all files named
/etc/systemd/system/ask-password-mandos.service.d/*.conf if any
exists. Also add --dh-params before $MANDOS_CLIENT_OPTIONS instead
of at end of line.
- files added:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- 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 © 2008-2012 Teddy Hogeborn
15
# Copyright © 2008-2012 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
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
66
75
import binascii
67
76
import tempfile
77
import itertools
78
import collections
79
import codecs
80
import unittest
81
import random
68
82
69
83
import dbus
70
84
import dbus.service
71
import gobject
72
import avahi
85
import gi
86
from gi.repository import GLib
73
87
from dbus.mainloop.glib import DBusGMainLoop
74
88
import ctypes
75
89
import ctypes.util
76
90
import xml.dom.minidom
77
91
import inspect
78
import GnuPGInterface
79
92
93
if sys.version_info.major == 2:
94
__metaclass__ = type
95
str = unicode
96
97
# Show warnings by default
98
if not sys.warnoptions:
99
import warnings
100
warnings.simplefilter("default")
101
102
# Try to find the value of SO_BINDTODEVICE:
80
103
try:
104
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
105
# newer, and it is also the most natural place for it:
81
106
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
82
107
except AttributeError:
83
108
try:
109
# This is where SO_BINDTODEVICE was up to and including Python
110
# 2.6, and also 3.2:
84
111
from IN import SO_BINDTODEVICE
85
112
except ImportError:
86
SO_BINDTODEVICE = None
87
88
version = "1.5.0"
113
# In Python 2.7 it seems to have been removed entirely.
114
# Try running the C preprocessor:
115
try:
116
cc = subprocess.Popen(["cc", "--language=c", "-E",
117
"/dev/stdin"],
118
stdin=subprocess.PIPE,
119
stdout=subprocess.PIPE)
120
stdout = cc.communicate(
121
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
122
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
123
except (OSError, ValueError, IndexError):
124
# No value found
125
SO_BINDTODEVICE = None
126
127
if sys.version_info < (3, 2):
128
configparser.Configparser = configparser.SafeConfigParser
129
130
version = "1.8.9"
89
131
stored_state_file = "clients.pickle"
90
132
91
133
logger = logging.getLogger()
92
syslogger = (logging.handlers.SysLogHandler
93
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
94
address = str("/dev/log")))
134
logging.captureWarnings(True) # Show warnings via the logging system
135
syslogger = None
95
136
96
137
try:
97
if_nametoindex = (ctypes.cdll.LoadLibrary
98
(ctypes.util.find_library("c"))
99
.if_nametoindex)
138
if_nametoindex = ctypes.cdll.LoadLibrary(
139
ctypes.util.find_library("c")).if_nametoindex
100
140
except (OSError, AttributeError):
141
101
142
def if_nametoindex(interface):
102
143
"Get an interface index the hard way, i.e. using fcntl()"
103
144
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
104
145
with contextlib.closing(socket.socket()) as s:
105
146
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
106
struct.pack(str("16s16x"),
107
interface))
108
interface_index = struct.unpack(str("I"),
109
ifreq[16:20])[0]
147
struct.pack(b"16s16x", interface))
148
interface_index = struct.unpack("I", ifreq[16:20])[0]
110
149
return interface_index
111
150
112
151
152
def copy_function(func):
153
"""Make a copy of a function"""
154
if sys.version_info.major == 2:
155
return types.FunctionType(func.func_code,
156
func.func_globals,
157
func.func_name,
158
func.func_defaults,
159
func.func_closure)
160
else:
161
return types.FunctionType(func.__code__,
162
func.__globals__,
163
func.__name__,
164
func.__defaults__,
165
func.__closure__)
166
167
113
168
def initlogger(debug, level=logging.WARNING):
114
169
"""init logger and add loglevel"""
115
170
171
global syslogger
172
syslogger = (logging.handlers.SysLogHandler(
173
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
174
address="/dev/log"))
116
175
syslogger.setFormatter(logging.Formatter
117
176
('Mandos [%(process)d]: %(levelname)s:'
118
177
' %(message)s'))
119
178
logger.addHandler(syslogger)
120
179
121
180
if debug:
122
181
console = logging.StreamHandler()
123
182
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
133
192
pass
134
193
135
194
136
class PGPEngine(object):
195
class PGPEngine:
137
196
"""A simple class for OpenPGP symmetric encryption & decryption"""
197
138
198
def __init__(self):
139
self.gnupg = GnuPGInterface.GnuPG()
140
199
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
141
self.gnupg = GnuPGInterface.GnuPG()
142
self.gnupg.options.meta_interactive = False
143
self.gnupg.options.homedir = self.tempdir
144
self.gnupg.options.extra_args.extend(['--force-mdc',
145
'--quiet',
146
'--no-use-agent'])
147
200
self.gpg = "gpg"
201
try:
202
output = subprocess.check_output(["gpgconf"])
203
for line in output.splitlines():
204
name, text, path = line.split(b":")
205
if name == b"gpg":
206
self.gpg = path
207
break
208
except OSError as e:
209
if e.errno != errno.ENOENT:
210
raise
211
self.gnupgargs = ['--batch',
212
'--homedir', self.tempdir,
213
'--force-mdc',
214
'--quiet']
215
# Only GPG version 1 has the --no-use-agent option.
216
if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
217
self.gnupgargs.append("--no-use-agent")
218
148
219
def __enter__(self):
149
220
return self
150
151
def __exit__ (self, exc_type, exc_value, traceback):
221
222
def __exit__(self, exc_type, exc_value, traceback):
152
223
self._cleanup()
153
224
return False
154
225
155
226
def __del__(self):
156
227
self._cleanup()
157
228
158
229
def _cleanup(self):
159
230
if self.tempdir is not None:
160
231
# Delete contents of tempdir
161
232
for root, dirs, files in os.walk(self.tempdir,
162
topdown = False):
233
topdown=False):
163
234
for filename in files:
164
235
os.remove(os.path.join(root, filename))
165
236
for dirname in dirs:
167
238
# Remove tempdir
168
239
os.rmdir(self.tempdir)
169
240
self.tempdir = None
170
241
171
242
def password_encode(self, password):
172
243
# Passphrase can not be empty and can not contain newlines or
173
244
# NUL bytes. So we prefix it and hex encode it.
174
return b"mandos" + binascii.hexlify(password)
175
245
encoded = b"mandos" + binascii.hexlify(password)
246
if len(encoded) > 2048:
247
# GnuPG can't handle long passwords, so encode differently
248
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
249
.replace(b"\n", b"\\n")
250
.replace(b"\0", b"\\x00"))
251
return encoded
252
176
253
def encrypt(self, data, password):
177
self.gnupg.passphrase = self.password_encode(password)
178
with open(os.devnull) as devnull:
179
try:
180
proc = self.gnupg.run(['--symmetric'],
181
create_fhs=['stdin', 'stdout'],
182
attach_fhs={'stderr': devnull})
183
with contextlib.closing(proc.handles['stdin']) as f:
184
f.write(data)
185
with contextlib.closing(proc.handles['stdout']) as f:
186
ciphertext = f.read()
187
proc.wait()
188
except IOError as e:
189
raise PGPError(e)
190
self.gnupg.passphrase = None
254
passphrase = self.password_encode(password)
255
with tempfile.NamedTemporaryFile(
256
dir=self.tempdir) as passfile:
257
passfile.write(passphrase)
258
passfile.flush()
259
proc = subprocess.Popen([self.gpg, '--symmetric',
260
'--passphrase-file',
261
passfile.name]
262
+ self.gnupgargs,
263
stdin=subprocess.PIPE,
264
stdout=subprocess.PIPE,
265
stderr=subprocess.PIPE)
266
ciphertext, err = proc.communicate(input=data)
267
if proc.returncode != 0:
268
raise PGPError(err)
191
269
return ciphertext
192
270
193
271
def decrypt(self, data, password):
194
self.gnupg.passphrase = self.password_encode(password)
195
with open(os.devnull) as devnull:
196
try:
197
proc = self.gnupg.run(['--decrypt'],
198
create_fhs=['stdin', 'stdout'],
199
attach_fhs={'stderr': devnull})
200
with contextlib.closing(proc.handles['stdin'] ) as f:
201
f.write(data)
202
with contextlib.closing(proc.handles['stdout']) as f:
203
decrypted_plaintext = f.read()
204
proc.wait()
205
except IOError as e:
206
raise PGPError(e)
207
self.gnupg.passphrase = None
272
passphrase = self.password_encode(password)
273
with tempfile.NamedTemporaryFile(
274
dir=self.tempdir) as passfile:
275
passfile.write(passphrase)
276
passfile.flush()
277
proc = subprocess.Popen([self.gpg, '--decrypt',
278
'--passphrase-file',
279
passfile.name]
280
+ self.gnupgargs,
281
stdin=subprocess.PIPE,
282
stdout=subprocess.PIPE,
283
stderr=subprocess.PIPE)
284
decrypted_plaintext, err = proc.communicate(input=data)
285
if proc.returncode != 0:
286
raise PGPError(err)
208
287
return decrypted_plaintext
209
288
210
289
290
# Pretend that we have an Avahi module
291
class avahi:
292
"""This isn't so much a class as it is a module-like namespace."""
293
IF_UNSPEC = -1 # avahi-common/address.h
294
PROTO_UNSPEC = -1 # avahi-common/address.h
295
PROTO_INET = 0 # avahi-common/address.h
296
PROTO_INET6 = 1 # avahi-common/address.h
297
DBUS_NAME = "org.freedesktop.Avahi"
298
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
299
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
300
DBUS_PATH_SERVER = "/"
301
302
@staticmethod
303
def string_array_to_txt_array(t):
304
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
305
for s in t), signature="ay")
306
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
307
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
308
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
309
SERVER_INVALID = 0 # avahi-common/defs.h
310
SERVER_REGISTERING = 1 # avahi-common/defs.h
311
SERVER_RUNNING = 2 # avahi-common/defs.h
312
SERVER_COLLISION = 3 # avahi-common/defs.h
313
SERVER_FAILURE = 4 # avahi-common/defs.h
314
211
315
212
316
class AvahiError(Exception):
213
317
def __init__(self, value, *args, **kwargs):
214
318
self.value = value
215
super(AvahiError, self).__init__(value, *args, **kwargs)
216
def __unicode__(self):
217
return unicode(repr(self.value))
319
return super(AvahiError, self).__init__(value, *args,
320
**kwargs)
321
218
322
219
323
class AvahiServiceError(AvahiError):
220
324
pass
221
325
326
222
327
class AvahiGroupError(AvahiError):
223
328
pass
224
329
225
330
226
class AvahiService(object):
331
class AvahiService:
227
332
"""An Avahi (Zeroconf) service.
228
333
229
334
Attributes:
230
335
interface: integer; avahi.IF_UNSPEC or an interface index.
231
336
Used to optionally bind to the specified interface.
232
337
name: string; Example: 'Mandos'
233
338
type: string; Example: '_mandos._tcp'.
234
See <http://www.dns-sd.org/ServiceTypes.html>
339
See <https://www.iana.org/assignments/service-names-port-numbers>
235
340
port: integer; what port to announce
236
341
TXT: list of strings; TXT record for the service
237
342
domain: string; Domain to publish on, default to .local if empty.
243
348
server: D-Bus Server
244
349
bus: dbus.SystemBus()
245
350
"""
246
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
247
servicetype = None, port = None, TXT = None,
248
domain = "", host = "", max_renames = 32768,
249
protocol = avahi.PROTO_UNSPEC, bus = None):
351
352
def __init__(self,
353
interface=avahi.IF_UNSPEC,
354
name=None,
355
servicetype=None,
356
port=None,
357
TXT=None,
358
domain="",
359
host="",
360
max_renames=32768,
361
protocol=avahi.PROTO_UNSPEC,
362
bus=None):
250
363
self.interface = interface
251
364
self.name = name
252
365
self.type = servicetype
261
374
self.server = None
262
375
self.bus = bus
263
376
self.entry_group_state_changed_match = None
264
def rename(self):
377
378
def rename(self, remove=True):
265
379
"""Derived from the Avahi example code"""
266
380
if self.rename_count >= self.max_renames:
267
381
logger.critical("No suitable Zeroconf service name found"
268
382
" after %i retries, exiting.",
269
383
self.rename_count)
270
384
raise AvahiServiceError("Too many renames")
271
self.name = unicode(self.server
272
.GetAlternativeServiceName(self.name))
385
self.name = str(
386
self.server.GetAlternativeServiceName(self.name))
387
self.rename_count += 1
273
388
logger.info("Changing Zeroconf service name to %r ...",
274
389
self.name)
275
self.remove()
390
if remove:
391
self.remove()
276
392
try:
277
393
self.add()
278
394
except dbus.exceptions.DBusException as error:
279
logger.critical("DBusException: %s", error)
280
self.cleanup()
281
os._exit(1)
282
self.rename_count += 1
395
if (error.get_dbus_name()
396
== "org.freedesktop.Avahi.CollisionError"):
397
logger.info("Local Zeroconf service name collision.")
398
return self.rename(remove=False)
399
else:
400
logger.critical("D-Bus Exception", exc_info=error)
401
self.cleanup()
402
os._exit(1)
403
283
404
def remove(self):
284
405
"""Derived from the Avahi example code"""
285
406
if self.entry_group_state_changed_match is not None:
287
408
self.entry_group_state_changed_match = None
288
409
if self.group is not None:
289
410
self.group.Reset()
411
290
412
def add(self):
291
413
"""Derived from the Avahi example code"""
292
414
self.remove()
309
431
dbus.UInt16(self.port),
310
432
avahi.string_array_to_txt_array(self.TXT))
311
433
self.group.Commit()
434
312
435
def entry_group_state_changed(self, state, error):
313
436
"""Derived from the Avahi example code"""
314
437
logger.debug("Avahi entry group state change: %i", state)
315
438
316
439
if state == avahi.ENTRY_GROUP_ESTABLISHED:
317
440
logger.debug("Zeroconf service established.")
318
441
elif state == avahi.ENTRY_GROUP_COLLISION:
320
443
self.rename()
321
444
elif state == avahi.ENTRY_GROUP_FAILURE:
322
445
logger.critical("Avahi: Error in group state changed %s",
323
unicode(error))
324
raise AvahiGroupError("State changed: %s"
325
% unicode(error))
446
str(error))
447
raise AvahiGroupError("State changed: {!s}".format(error))
448
326
449
def cleanup(self):
327
450
"""Derived from the Avahi example code"""
328
451
if self.group is not None:
333
456
pass
334
457
self.group = None
335
458
self.remove()
459
336
460
def server_state_changed(self, state, error=None):
337
461
"""Derived from the Avahi example code"""
338
462
logger.debug("Avahi server state change: %i", state)
339
bad_states = { avahi.SERVER_INVALID:
340
"Zeroconf server invalid",
341
avahi.SERVER_REGISTERING: None,
342
avahi.SERVER_COLLISION:
343
"Zeroconf server name collision",
344
avahi.SERVER_FAILURE:
345
"Zeroconf server failure" }
463
bad_states = {
464
avahi.SERVER_INVALID: "Zeroconf server invalid",
465
avahi.SERVER_REGISTERING: None,
466
avahi.SERVER_COLLISION: "Zeroconf server name collision",
467
avahi.SERVER_FAILURE: "Zeroconf server failure",
468
}
346
469
if state in bad_states:
347
470
if bad_states[state] is not None:
348
471
if error is None:
351
474
logger.error(bad_states[state] + ": %r", error)
352
475
self.cleanup()
353
476
elif state == avahi.SERVER_RUNNING:
354
self.add()
477
try:
478
self.add()
479
except dbus.exceptions.DBusException as error:
480
if (error.get_dbus_name()
481
== "org.freedesktop.Avahi.CollisionError"):
482
logger.info("Local Zeroconf service name"
483
" collision.")
484
return self.rename(remove=False)
485
else:
486
logger.critical("D-Bus Exception", exc_info=error)
487
self.cleanup()
488
os._exit(1)
355
489
else:
356
490
if error is None:
357
491
logger.debug("Unknown state: %r", state)
358
492
else:
359
493
logger.debug("Unknown state: %r: %r", state, error)
494
360
495
def activate(self):
361
496
"""Derived from the Avahi example code"""
362
497
if self.server is None:
366
501
follow_name_owner_changes=True),
367
502
avahi.DBUS_INTERFACE_SERVER)
368
503
self.server.connect_to_signal("StateChanged",
369
self.server_state_changed)
504
self.server_state_changed)
370
505
self.server_state_changed(self.server.GetState())
371
506
507
372
508
class AvahiServiceToSyslog(AvahiService):
373
def rename(self):
509
def rename(self, *args, **kwargs):
374
510
"""Add the new name to the syslog messages"""
375
ret = AvahiService.rename(self)
376
syslogger.setFormatter(logging.Formatter
377
('Mandos (%s) [%%(process)d]:'
378
' %%(levelname)s: %%(message)s'
379
% self.name))
511
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
512
syslogger.setFormatter(logging.Formatter(
513
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
514
.format(self.name)))
380
515
return ret
381
516
382
def timedelta_to_milliseconds(td):
383
"Convert a datetime.timedelta() to milliseconds"
384
return ((td.days * 24 * 60 * 60 * 1000)
385
+ (td.seconds * 1000)
386
+ (td.microseconds // 1000))
387
388
class Client(object):
517
518
# Pretend that we have a GnuTLS module
519
class gnutls:
520
"""This isn't so much a class as it is a module-like namespace."""
521
522
library = ctypes.util.find_library("gnutls")
523
if library is None:
524
library = ctypes.util.find_library("gnutls-deb0")
525
_library = ctypes.cdll.LoadLibrary(library)
526
del library
527
528
# Unless otherwise indicated, the constants and types below are
529
# all from the gnutls/gnutls.h C header file.
530
531
# Constants
532
E_SUCCESS = 0
533
E_INTERRUPTED = -52
534
E_AGAIN = -28
535
CRT_OPENPGP = 2
536
CRT_RAWPK = 3
537
CLIENT = 2
538
SHUT_RDWR = 0
539
CRD_CERTIFICATE = 1
540
E_NO_CERTIFICATE_FOUND = -49
541
X509_FMT_DER = 0
542
NO_TICKETS = 1<<10
543
ENABLE_RAWPK = 1<<18
544
CTYPE_PEERS = 3
545
KEYID_USE_SHA256 = 1 # gnutls/x509.h
546
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
547
548
# Types
549
class session_int(ctypes.Structure):
550
_fields_ = []
551
session_t = ctypes.POINTER(session_int)
552
553
class certificate_credentials_st(ctypes.Structure):
554
_fields_ = []
555
certificate_credentials_t = ctypes.POINTER(
556
certificate_credentials_st)
557
certificate_type_t = ctypes.c_int
558
559
class datum_t(ctypes.Structure):
560
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
561
('size', ctypes.c_uint)]
562
563
class openpgp_crt_int(ctypes.Structure):
564
_fields_ = []
565
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
566
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
567
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
568
credentials_type_t = ctypes.c_int
569
transport_ptr_t = ctypes.c_void_p
570
close_request_t = ctypes.c_int
571
572
# Exceptions
573
class Error(Exception):
574
def __init__(self, message=None, code=None, args=()):
575
# Default usage is by a message string, but if a return
576
# code is passed, convert it to a string with
577
# gnutls.strerror()
578
self.code = code
579
if message is None and code is not None:
580
message = gnutls.strerror(code)
581
return super(gnutls.Error, self).__init__(
582
message, *args)
583
584
class CertificateSecurityError(Error):
585
pass
586
587
# Classes
588
class Credentials:
589
def __init__(self):
590
self._c_object = gnutls.certificate_credentials_t()
591
gnutls.certificate_allocate_credentials(
592
ctypes.byref(self._c_object))
593
self.type = gnutls.CRD_CERTIFICATE
594
595
def __del__(self):
596
gnutls.certificate_free_credentials(self._c_object)
597
598
class ClientSession:
599
def __init__(self, socket, credentials=None):
600
self._c_object = gnutls.session_t()
601
gnutls_flags = gnutls.CLIENT
602
if gnutls.check_version(b"3.5.6"):
603
gnutls_flags |= gnutls.NO_TICKETS
604
if gnutls.has_rawpk:
605
gnutls_flags |= gnutls.ENABLE_RAWPK
606
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
607
del gnutls_flags
608
gnutls.set_default_priority(self._c_object)
609
gnutls.transport_set_ptr(self._c_object, socket.fileno())
610
gnutls.handshake_set_private_extensions(self._c_object,
611
True)
612
self.socket = socket
613
if credentials is None:
614
credentials = gnutls.Credentials()
615
gnutls.credentials_set(self._c_object, credentials.type,
616
ctypes.cast(credentials._c_object,
617
ctypes.c_void_p))
618
self.credentials = credentials
619
620
def __del__(self):
621
gnutls.deinit(self._c_object)
622
623
def handshake(self):
624
return gnutls.handshake(self._c_object)
625
626
def send(self, data):
627
data = bytes(data)
628
data_len = len(data)
629
while data_len > 0:
630
data_len -= gnutls.record_send(self._c_object,
631
data[-data_len:],
632
data_len)
633
634
def bye(self):
635
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
636
637
# Error handling functions
638
def _error_code(result):
639
"""A function to raise exceptions on errors, suitable
640
for the 'restype' attribute on ctypes functions"""
641
if result >= 0:
642
return result
643
if result == gnutls.E_NO_CERTIFICATE_FOUND:
644
raise gnutls.CertificateSecurityError(code=result)
645
raise gnutls.Error(code=result)
646
647
def _retry_on_error(result, func, arguments):
648
"""A function to retry on some errors, suitable
649
for the 'errcheck' attribute on ctypes functions"""
650
while result < 0:
651
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
652
return _error_code(result)
653
result = func(*arguments)
654
return result
655
656
# Unless otherwise indicated, the function declarations below are
657
# all from the gnutls/gnutls.h C header file.
658
659
# Functions
660
priority_set_direct = _library.gnutls_priority_set_direct
661
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
662
ctypes.POINTER(ctypes.c_char_p)]
663
priority_set_direct.restype = _error_code
664
665
init = _library.gnutls_init
666
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
667
init.restype = _error_code
668
669
set_default_priority = _library.gnutls_set_default_priority
670
set_default_priority.argtypes = [session_t]
671
set_default_priority.restype = _error_code
672
673
record_send = _library.gnutls_record_send
674
record_send.argtypes = [session_t, ctypes.c_void_p,
675
ctypes.c_size_t]
676
record_send.restype = ctypes.c_ssize_t
677
record_send.errcheck = _retry_on_error
678
679
certificate_allocate_credentials = (
680
_library.gnutls_certificate_allocate_credentials)
681
certificate_allocate_credentials.argtypes = [
682
ctypes.POINTER(certificate_credentials_t)]
683
certificate_allocate_credentials.restype = _error_code
684
685
certificate_free_credentials = (
686
_library.gnutls_certificate_free_credentials)
687
certificate_free_credentials.argtypes = [
688
certificate_credentials_t]
689
certificate_free_credentials.restype = None
690
691
handshake_set_private_extensions = (
692
_library.gnutls_handshake_set_private_extensions)
693
handshake_set_private_extensions.argtypes = [session_t,
694
ctypes.c_int]
695
handshake_set_private_extensions.restype = None
696
697
credentials_set = _library.gnutls_credentials_set
698
credentials_set.argtypes = [session_t, credentials_type_t,
699
ctypes.c_void_p]
700
credentials_set.restype = _error_code
701
702
strerror = _library.gnutls_strerror
703
strerror.argtypes = [ctypes.c_int]
704
strerror.restype = ctypes.c_char_p
705
706
certificate_type_get = _library.gnutls_certificate_type_get
707
certificate_type_get.argtypes = [session_t]
708
certificate_type_get.restype = _error_code
709
710
certificate_get_peers = _library.gnutls_certificate_get_peers
711
certificate_get_peers.argtypes = [session_t,
712
ctypes.POINTER(ctypes.c_uint)]
713
certificate_get_peers.restype = ctypes.POINTER(datum_t)
714
715
global_set_log_level = _library.gnutls_global_set_log_level
716
global_set_log_level.argtypes = [ctypes.c_int]
717
global_set_log_level.restype = None
718
719
global_set_log_function = _library.gnutls_global_set_log_function
720
global_set_log_function.argtypes = [log_func]
721
global_set_log_function.restype = None
722
723
deinit = _library.gnutls_deinit
724
deinit.argtypes = [session_t]
725
deinit.restype = None
726
727
handshake = _library.gnutls_handshake
728
handshake.argtypes = [session_t]
729
handshake.restype = _error_code
730
handshake.errcheck = _retry_on_error
731
732
transport_set_ptr = _library.gnutls_transport_set_ptr
733
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
734
transport_set_ptr.restype = None
735
736
bye = _library.gnutls_bye
737
bye.argtypes = [session_t, close_request_t]
738
bye.restype = _error_code
739
bye.errcheck = _retry_on_error
740
741
check_version = _library.gnutls_check_version
742
check_version.argtypes = [ctypes.c_char_p]
743
check_version.restype = ctypes.c_char_p
744
745
_need_version = b"3.3.0"
746
if check_version(_need_version) is None:
747
raise self.Error("Needs GnuTLS {} or later"
748
.format(_need_version))
749
750
_tls_rawpk_version = b"3.6.6"
751
has_rawpk = bool(check_version(_tls_rawpk_version))
752
753
if has_rawpk:
754
# Types
755
class pubkey_st(ctypes.Structure):
756
_fields = []
757
pubkey_t = ctypes.POINTER(pubkey_st)
758
759
x509_crt_fmt_t = ctypes.c_int
760
761
# All the function declarations below are from gnutls/abstract.h
762
pubkey_init = _library.gnutls_pubkey_init
763
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
764
pubkey_init.restype = _error_code
765
766
pubkey_import = _library.gnutls_pubkey_import
767
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
768
x509_crt_fmt_t]
769
pubkey_import.restype = _error_code
770
771
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
772
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
773
ctypes.POINTER(ctypes.c_ubyte),
774
ctypes.POINTER(ctypes.c_size_t)]
775
pubkey_get_key_id.restype = _error_code
776
777
pubkey_deinit = _library.gnutls_pubkey_deinit
778
pubkey_deinit.argtypes = [pubkey_t]
779
pubkey_deinit.restype = None
780
else:
781
# All the function declarations below are from gnutls/openpgp.h
782
783
openpgp_crt_init = _library.gnutls_openpgp_crt_init
784
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
785
openpgp_crt_init.restype = _error_code
786
787
openpgp_crt_import = _library.gnutls_openpgp_crt_import
788
openpgp_crt_import.argtypes = [openpgp_crt_t,
789
ctypes.POINTER(datum_t),
790
openpgp_crt_fmt_t]
791
openpgp_crt_import.restype = _error_code
792
793
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
794
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
795
ctypes.POINTER(ctypes.c_uint)]
796
openpgp_crt_verify_self.restype = _error_code
797
798
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
799
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
800
openpgp_crt_deinit.restype = None
801
802
openpgp_crt_get_fingerprint = (
803
_library.gnutls_openpgp_crt_get_fingerprint)
804
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
805
ctypes.c_void_p,
806
ctypes.POINTER(
807
ctypes.c_size_t)]
808
openpgp_crt_get_fingerprint.restype = _error_code
809
810
if check_version(b"3.6.4"):
811
certificate_type_get2 = _library.gnutls_certificate_type_get2
812
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
813
certificate_type_get2.restype = _error_code
814
815
# Remove non-public functions
816
del _error_code, _retry_on_error
817
818
819
def call_pipe(connection, # : multiprocessing.Connection
820
func, *args, **kwargs):
821
"""This function is meant to be called by multiprocessing.Process
822
823
This function runs func(*args, **kwargs), and writes the resulting
824
return value on the provided multiprocessing.Connection.
825
"""
826
connection.send(func(*args, **kwargs))
827
connection.close()
828
829
830
class Client:
389
831
"""A representation of a client host served by this server.
390
832
391
833
Attributes:
392
834
approved: bool(); 'None' if not yet approved/disapproved
393
835
approval_delay: datetime.timedelta(); Time to wait for approval
394
836
approval_duration: datetime.timedelta(); Duration of one approval
395
checker: subprocess.Popen(); a running checker process used
396
to see if the client lives.
397
'None' if no process is running.
398
checker_callback_tag: a gobject event source tag, or None
837
checker: multiprocessing.Process(); a running checker process used
838
to see if the client lives. 'None' if no process is
839
running.
840
checker_callback_tag: a GLib event source tag, or None
399
841
checker_command: string; External command which is run to check
400
842
if client lives. %() expansions are done at
401
843
runtime with vars(self) as dict, so that for
402
844
instance %(name)s can be used in the command.
403
checker_initiator_tag: a gobject event source tag, or None
845
checker_initiator_tag: a GLib event source tag, or None
404
846
created: datetime.datetime(); (UTC) object creation
405
847
client_structure: Object describing what attributes a client has
406
848
and is used for storing the client at exit
407
849
current_checker_command: string; current running checker_command
408
disable_initiator_tag: a gobject event source tag, or None
850
disable_initiator_tag: a GLib event source tag, or None
409
851
enabled: bool()
410
852
fingerprint: string (40 or 32 hexadecimal digits); used to
411
uniquely identify the client
853
uniquely identify an OpenPGP client
854
key_id: string (64 hexadecimal digits); used to uniquely identify
855
a client using raw public keys
412
856
host: string; available for use by the checker command
413
857
interval: datetime.timedelta(); How often to start a new checker
414
858
last_approval_request: datetime.datetime(); (UTC) or None
415
859
last_checked_ok: datetime.datetime(); (UTC) or None
416
860
last_checker_status: integer between 0 and 255 reflecting exit
417
861
status of last checker. -1 reflects crashed
418
checker, or None.
862
checker, -2 means no checker completed yet.
863
last_checker_signal: The signal which killed the last checker, if
864
last_checker_status is -1
419
865
last_enabled: datetime.datetime(); (UTC) or None
420
866
name: string; from the config file, used in log messages and
421
867
D-Bus identifiers
422
868
secret: bytestring; sent verbatim (over TLS) to client
423
869
timeout: datetime.timedelta(); How long from last_checked_ok
424
870
until this client is disabled
425
extended_timeout: extra long timeout when password has been sent
871
extended_timeout: extra long timeout when secret has been sent
426
872
runtime_expansions: Allowed attributes for runtime expansion.
427
873
expires: datetime.datetime(); time (UTC) when a client will be
428
874
disabled, or None
875
server_settings: The server_settings dict from main()
429
876
"""
430
877
431
878
runtime_expansions = ("approval_delay", "approval_duration",
432
"created", "enabled", "fingerprint",
433
"host", "interval", "last_checked_ok",
879
"created", "enabled", "expires", "key_id",
880
"fingerprint", "host", "interval",
881
"last_approval_request", "last_checked_ok",
434
882
"last_enabled", "name", "timeout")
435
client_defaults = { "timeout": "5m",
436
"extended_timeout": "15m",
437
"interval": "2m",
438
"checker": "fping -q -- %%(host)s",
439
"host": "",
440
"approval_delay": "0s",
441
"approval_duration": "1s",
442
"approved_by_default": "True",
443
"enabled": "True",
444
}
445
446
def timeout_milliseconds(self):
447
"Return the 'timeout' attribute in milliseconds"
448
return timedelta_to_milliseconds(self.timeout)
449
450
def extended_timeout_milliseconds(self):
451
"Return the 'extended_timeout' attribute in milliseconds"
452
return timedelta_to_milliseconds(self.extended_timeout)
453
454
def interval_milliseconds(self):
455
"Return the 'interval' attribute in milliseconds"
456
return timedelta_to_milliseconds(self.interval)
457
458
def approval_delay_milliseconds(self):
459
return timedelta_to_milliseconds(self.approval_delay)
883
client_defaults = {
884
"timeout": "PT5M",
885
"extended_timeout": "PT15M",
886
"interval": "PT2M",
887
"checker": "fping -q -- %%(host)s",
888
"host": "",
889
"approval_delay": "PT0S",
890
"approval_duration": "PT1S",
891
"approved_by_default": "True",
892
"enabled": "True",
893
}
460
894
461
895
@staticmethod
462
896
def config_parser(config):
470
904
for client_name in config.sections():
471
905
section = dict(config.items(client_name))
472
906
client = settings[client_name] = {}
473
907
474
908
client["host"] = section["host"]
475
909
# Reformat values from string types to Python types
476
910
client["approved_by_default"] = config.getboolean(
477
911
client_name, "approved_by_default")
478
912
client["enabled"] = config.getboolean(client_name,
479
913
"enabled")
480
914
915
# Uppercase and remove spaces from key_id and fingerprint
916
# for later comparison purposes with return value from the
917
# key_id() and fingerprint() functions
918
client["key_id"] = (section.get("key_id", "").upper()
919
.replace(" ", ""))
481
920
client["fingerprint"] = (section["fingerprint"].upper()
482
921
.replace(" ", ""))
483
922
if "secret" in section:
484
client["secret"] = section["secret"].decode("base64")
923
client["secret"] = codecs.decode(section["secret"]
924
.encode("utf-8"),
925
"base64")
485
926
elif "secfile" in section:
486
927
with open(os.path.expanduser(os.path.expandvars
487
928
(section["secfile"])),
488
929
"rb") as secfile:
489
930
client["secret"] = secfile.read()
490
931
else:
491
raise TypeError("No secret or secfile for section %s"
492
% section)
932
raise TypeError("No secret or secfile for section {}"
933
.format(section))
493
934
client["timeout"] = string_to_delta(section["timeout"])
494
935
client["extended_timeout"] = string_to_delta(
495
936
section["extended_timeout"])
501
942
client["checker_command"] = section["checker"]
502
943
client["last_approval_request"] = None
503
944
client["last_checked_ok"] = None
504
client["last_checker_status"] = None
505
945
client["last_checker_status"] = -2
946
506
947
return settings
507
508
509
def __init__(self, settings, name = None):
510
"""Note: the 'checker' key in 'config' sets the
511
'checker_command' attribute and *not* the 'checker'
512
attribute."""
948
949
def __init__(self, settings, name=None, server_settings=None):
513
950
self.name = name
951
if server_settings is None:
952
server_settings = {}
953
self.server_settings = server_settings
514
954
# adding all client settings
515
for setting, value in settings.iteritems():
955
for setting, value in settings.items():
516
956
setattr(self, setting, value)
517
957
518
958
if self.enabled:
519
959
if not hasattr(self, "last_enabled"):
520
960
self.last_enabled = datetime.datetime.utcnow()
524
964
else:
525
965
self.last_enabled = None
526
966
self.expires = None
527
967
528
968
logger.debug("Creating client %r", self.name)
529
# Uppercase and remove spaces from fingerprint for later
530
# comparison purposes with return value from the fingerprint()
531
# function
969
logger.debug(" Key ID: %s", self.key_id)
532
970
logger.debug(" Fingerprint: %s", self.fingerprint)
533
971
self.created = settings.get("created",
534
972
datetime.datetime.utcnow())
541
979
self.current_checker_command = None
542
980
self.approved = None
543
981
self.approvals_pending = 0
544
self.changedstate = (multiprocessing_manager
545
.Condition(multiprocessing_manager
546
.Lock()))
547
self.client_structure = [attr for attr in
548
self.__dict__.iterkeys()
982
self.changedstate = multiprocessing_manager.Condition(
983
multiprocessing_manager.Lock())
984
self.client_structure = [attr
985
for attr in self.__dict__.keys()
549
986
if not attr.startswith("_")]
550
987
self.client_structure.append("client_structure")
551
552
for name, t in inspect.getmembers(type(self),
553
lambda obj:
554
isinstance(obj,
555
property)):
988
989
for name, t in inspect.getmembers(
990
type(self), lambda obj: isinstance(obj, property)):
556
991
if not name.startswith("_"):
557
992
self.client_structure.append(name)
558
993
559
994
# Send notice to process children that client state has changed
560
995
def send_changedstate(self):
561
996
with self.changedstate:
562
997
self.changedstate.notify_all()
563
998
564
999
def enable(self):
565
1000
"""Start this client's checker and timeout hooks"""
566
1001
if getattr(self, "enabled", False):
567
1002
# Already enabled
568
1003
return
569
self.send_changedstate()
570
1004
self.expires = datetime.datetime.utcnow() + self.timeout
571
1005
self.enabled = True
572
1006
self.last_enabled = datetime.datetime.utcnow()
573
1007
self.init_checker()
574
1008
self.send_changedstate()
1009
575
1010
def disable(self, quiet=True):
576
1011
"""Disable this client."""
577
1012
if not getattr(self, "enabled", False):
578
1013
return False
579
1014
if not quiet:
580
self.send_changedstate()
581
if not quiet:
582
1015
logger.info("Disabling client %s", self.name)
583
if getattr(self, "disable_initiator_tag", False):
584
gobject.source_remove(self.disable_initiator_tag)
1016
if getattr(self, "disable_initiator_tag", None) is not None:
1017
GLib.source_remove(self.disable_initiator_tag)
585
1018
self.disable_initiator_tag = None
586
1019
self.expires = None
587
if getattr(self, "checker_initiator_tag", False):
588
gobject.source_remove(self.checker_initiator_tag)
1020
if getattr(self, "checker_initiator_tag", None) is not None:
1021
GLib.source_remove(self.checker_initiator_tag)
589
1022
self.checker_initiator_tag = None
590
1023
self.stop_checker()
591
1024
self.enabled = False
592
# Do not run this again if called by a gobject.timeout_add
1025
if not quiet:
1026
self.send_changedstate()
1027
# Do not run this again if called by a GLib.timeout_add
593
1028
return False
594
1029
595
1030
def __del__(self):
596
1031
self.disable()
597
1032
598
1033
def init_checker(self):
599
1034
# Schedule a new checker to be started an 'interval' from now,
600
1035
# and every interval from then on.
601
self.checker_initiator_tag = (gobject.timeout_add
602
(self.interval_milliseconds(),
603
self.start_checker))
1036
if self.checker_initiator_tag is not None:
1037
GLib.source_remove(self.checker_initiator_tag)
1038
self.checker_initiator_tag = GLib.timeout_add(
1039
random.randrange(int(self.interval.total_seconds() * 1000
1040
+ 1)),
1041
self.start_checker)
604
1042
# Schedule a disable() when 'timeout' has passed
605
self.disable_initiator_tag = (gobject.timeout_add
606
(self.timeout_milliseconds(),
607
self.disable))
1043
if self.disable_initiator_tag is not None:
1044
GLib.source_remove(self.disable_initiator_tag)
1045
self.disable_initiator_tag = GLib.timeout_add(
1046
int(self.timeout.total_seconds() * 1000), self.disable)
608
1047
# Also start a new checker *right now*.
609
1048
self.start_checker()
610
611
def checker_callback(self, pid, condition, command):
1049
1050
def checker_callback(self, source, condition, connection,
1051
command):
612
1052
"""The checker has completed, so take appropriate actions."""
1053
# Read return code from connection (see call_pipe)
1054
returncode = connection.recv()
1055
connection.close()
1056
if self.checker is not None:
1057
self.checker.join()
613
1058
self.checker_callback_tag = None
614
1059
self.checker = None
615
if os.WIFEXITED(condition):
616
self.last_checker_status = os.WEXITSTATUS(condition)
1060
1061
if returncode >= 0:
1062
self.last_checker_status = returncode
1063
self.last_checker_signal = None
617
1064
if self.last_checker_status == 0:
618
1065
logger.info("Checker for %(name)s succeeded",
619
1066
vars(self))
620
1067
self.checked_ok()
621
1068
else:
622
logger.info("Checker for %(name)s failed",
623
vars(self))
1069
logger.info("Checker for %(name)s failed", vars(self))
624
1070
else:
625
1071
self.last_checker_status = -1
1072
self.last_checker_signal = -returncode
626
1073
logger.warning("Checker for %(name)s crashed?",
627
1074
vars(self))
628
629
def checked_ok(self, timeout=None):
630
"""Bump up the timeout for this client.
631
632
This should only be called when the client has been seen,
633
alive and well.
634
"""
1075
return False
1076
1077
def checked_ok(self):
1078
"""Assert that the client has been seen, alive and well."""
1079
self.last_checked_ok = datetime.datetime.utcnow()
1080
self.last_checker_status = 0
1081
self.last_checker_signal = None
1082
self.bump_timeout()
1083
1084
def bump_timeout(self, timeout=None):
1085
"""Bump up the timeout for this client."""
635
1086
if timeout is None:
636
1087
timeout = self.timeout
637
self.last_checked_ok = datetime.datetime.utcnow()
638
1088
if self.disable_initiator_tag is not None:
639
gobject.source_remove(self.disable_initiator_tag)
1089
GLib.source_remove(self.disable_initiator_tag)
1090
self.disable_initiator_tag = None
640
1091
if getattr(self, "enabled", False):
641
self.disable_initiator_tag = (gobject.timeout_add
642
(timedelta_to_milliseconds
643
(timeout), self.disable))
1092
self.disable_initiator_tag = GLib.timeout_add(
1093
int(timeout.total_seconds() * 1000), self.disable)
644
1094
self.expires = datetime.datetime.utcnow() + timeout
645
1095
646
1096
def need_approval(self):
647
1097
self.last_approval_request = datetime.datetime.utcnow()
648
1098
649
1099
def start_checker(self):
650
1100
"""Start a new checker subprocess if one is not running.
651
1101
652
1102
If a checker already exists, leave it running and do
653
1103
nothing."""
654
1104
# The reason for not killing a running checker is that if we
655
# did that, then if a checker (for some reason) started
656
# running slowly and taking more than 'interval' time, the
657
# client would inevitably timeout, since no checker would get
658
# a chance to run to completion. If we instead leave running
1105
# did that, and if a checker (for some reason) started running
1106
# slowly and taking more than 'interval' time, then the client
1107
# would inevitably timeout, since no checker would get a
1108
# chance to run to completion. If we instead leave running
659
1109
# checkers alone, the checker would have to take more time
660
1110
# than 'timeout' for the client to be disabled, which is as it
661
1111
# should be.
662
663
# If a checker exists, make sure it is not a zombie
664
try:
665
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
666
except (AttributeError, OSError) as error:
667
if (isinstance(error, OSError)
668
and error.errno != errno.ECHILD):
669
raise error
670
else:
671
if pid:
672
logger.warning("Checker was a zombie")
673
gobject.source_remove(self.checker_callback_tag)
674
self.checker_callback(pid, status,
675
self.current_checker_command)
1112
1113
if self.checker is not None and not self.checker.is_alive():
1114
logger.warning("Checker was not alive; joining")
1115
self.checker.join()
1116
self.checker = None
676
1117
# Start a new checker if needed
677
1118
if self.checker is None:
1119
# Escape attributes for the shell
1120
escaped_attrs = {
1121
attr: re.escape(str(getattr(self, attr)))
1122
for attr in self.runtime_expansions}
678
1123
try:
679
# In case checker_command has exactly one % operator
680
command = self.checker_command % self.host
681
except TypeError:
682
# Escape attributes for the shell
683
escaped_attrs = dict(
684
(attr,
685
re.escape(unicode(str(getattr(self, attr, "")),
686
errors=
687
'replace')))
688
for attr in
689
self.runtime_expansions)
690
691
try:
692
command = self.checker_command % escaped_attrs
693
except TypeError as error:
694
logger.error('Could not format string "%s":'
695
' %s', self.checker_command, error)
696
return True # Try again later
1124
command = self.checker_command % escaped_attrs
1125
except TypeError as error:
1126
logger.error('Could not format string "%s"',
1127
self.checker_command,
1128
exc_info=error)
1129
return True # Try again later
697
1130
self.current_checker_command = command
698
try:
699
logger.info("Starting checker %r for %s",
700
command, self.name)
701
# We don't need to redirect stdout and stderr, since
702
# in normal mode, that is already done by daemon(),
703
# and in debug mode we don't want to. (Stdin is
704
# always replaced by /dev/null.)
705
self.checker = subprocess.Popen(command,
706
close_fds=True,
707
shell=True, cwd="/")
708
self.checker_callback_tag = (gobject.child_watch_add
709
(self.checker.pid,
710
self.checker_callback,
711
data=command))
712
# The checker may have completed before the gobject
713
# watch was added. Check for this.
714
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
715
if pid:
716
gobject.source_remove(self.checker_callback_tag)
717
self.checker_callback(pid, status, command)
718
except OSError as error:
719
logger.error("Failed to start subprocess: %s",
720
error)
721
# Re-run this periodically if run by gobject.timeout_add
1131
logger.info("Starting checker %r for %s", command,
1132
self.name)
1133
# We don't need to redirect stdout and stderr, since
1134
# in normal mode, that is already done by daemon(),
1135
# and in debug mode we don't want to. (Stdin is
1136
# always replaced by /dev/null.)
1137
# The exception is when not debugging but nevertheless
1138
# running in the foreground; use the previously
1139
# created wnull.
1140
popen_args = {"close_fds": True,
1141
"shell": True,
1142
"cwd": "/"}
1143
if (not self.server_settings["debug"]
1144
and self.server_settings["foreground"]):
1145
popen_args.update({"stdout": wnull,
1146
"stderr": wnull})
1147
pipe = multiprocessing.Pipe(duplex=False)
1148
self.checker = multiprocessing.Process(
1149
target=call_pipe,
1150
args=(pipe[1], subprocess.call, command),
1151
kwargs=popen_args)
1152
self.checker.start()
1153
self.checker_callback_tag = GLib.io_add_watch(
1154
GLib.IOChannel.unix_new(pipe[0].fileno()),
1155
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1156
self.checker_callback, pipe[0], command)
1157
# Re-run this periodically if run by GLib.timeout_add
722
1158
return True
723
1159
724
1160
def stop_checker(self):
725
1161
"""Force the checker process, if any, to stop."""
726
1162
if self.checker_callback_tag:
727
gobject.source_remove(self.checker_callback_tag)
1163
GLib.source_remove(self.checker_callback_tag)
728
1164
self.checker_callback_tag = None
729
1165
if getattr(self, "checker", None) is None:
730
1166
return
731
1167
logger.debug("Stopping checker for %(name)s", vars(self))
732
try:
733
os.kill(self.checker.pid, signal.SIGTERM)
734
#time.sleep(0.5)
735
#if self.checker.poll() is None:
736
# os.kill(self.checker.pid, signal.SIGKILL)
737
except OSError as error:
738
if error.errno != errno.ESRCH: # No such process
739
raise
1168
self.checker.terminate()
740
1169
self.checker = None
741
1170
742
1171
743
def dbus_service_property(dbus_interface, signature="v",
744
access="readwrite", byte_arrays=False):
1172
def dbus_service_property(dbus_interface,
1173
signature="v",
1174
access="readwrite",
1175
byte_arrays=False):
745
1176
"""Decorators for marking methods of a DBusObjectWithProperties to
746
1177
become properties on the D-Bus.
747
1178
748
1179
The decorated method will be called with no arguments by "Get"
749
1180
and with one argument by "Set".
750
1181
751
1182
The parameters, where they are supported, are the same as
752
1183
dbus.service.method, except there is only "signature", since the
753
1184
type from Get() and the type sent to Set() is the same.
756
1187
# "Set" method, so we fail early here:
757
1188
if byte_arrays and signature != "ay":
758
1189
raise ValueError("Byte arrays not supported for non-'ay'"
759
" signature %r" % signature)
1190
" signature {!r}".format(signature))
1191
760
1192
def decorator(func):
761
1193
func._dbus_is_property = True
762
1194
func._dbus_interface = dbus_interface
765
1197
func._dbus_name = func.__name__
766
1198
if func._dbus_name.endswith("_dbus_property"):
767
1199
func._dbus_name = func._dbus_name[:-14]
768
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
769
return func
1200
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1201
return func
1202
1203
return decorator
1204
1205
1206
def dbus_interface_annotations(dbus_interface):
1207
"""Decorator for marking functions returning interface annotations
1208
1209
Usage:
1210
1211
@dbus_interface_annotations("org.example.Interface")
1212
def _foo(self): # Function name does not matter
1213
return {"org.freedesktop.DBus.Deprecated": "true",
1214
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1215
"false"}
1216
"""
1217
1218
def decorator(func):
1219
func._dbus_is_interface = True
1220
func._dbus_interface = dbus_interface
1221
func._dbus_name = dbus_interface
1222
return func
1223
1224
return decorator
1225
1226
1227
def dbus_annotations(annotations):
1228
"""Decorator to annotate D-Bus methods, signals or properties
1229
Usage:
1230
1231
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1232
"org.freedesktop.DBus.Property."
1233
"EmitsChangedSignal": "false"})
1234
@dbus_service_property("org.example.Interface", signature="b",
1235
access="r")
1236
def Property_dbus_property(self):
1237
return dbus.Boolean(False)
1238
1239
See also the DBusObjectWithAnnotations class.
1240
"""
1241
1242
def decorator(func):
1243
func._dbus_annotations = annotations
1244
return func
1245
770
1246
return decorator
771
1247
772
1248
773
1249
class DBusPropertyException(dbus.exceptions.DBusException):
774
1250
"""A base class for D-Bus property-related exceptions
775
1251
"""
776
def __unicode__(self):
777
return unicode(str(self))
1252
pass
778
1253
779
1254
780
1255
class DBusPropertyAccessException(DBusPropertyException):
789
1264
pass
790
1265
791
1266
792
class DBusObjectWithProperties(dbus.service.Object):
1267
class DBusObjectWithAnnotations(dbus.service.Object):
1268
"""A D-Bus object with annotations.
1269
1270
Classes inheriting from this can use the dbus_annotations
1271
decorator to add annotations to methods or signals.
1272
"""
1273
1274
@staticmethod
1275
def _is_dbus_thing(thing):
1276
"""Returns a function testing if an attribute is a D-Bus thing
1277
1278
If called like _is_dbus_thing("method") it returns a function
1279
suitable for use as predicate to inspect.getmembers().
1280
"""
1281
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1282
False)
1283
1284
def _get_all_dbus_things(self, thing):
1285
"""Returns a generator of (name, attribute) pairs
1286
"""
1287
return ((getattr(athing.__get__(self), "_dbus_name", name),
1288
athing.__get__(self))
1289
for cls in self.__class__.__mro__
1290
for name, athing in
1291
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1292
1293
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1294
out_signature="s",
1295
path_keyword='object_path',
1296
connection_keyword='connection')
1297
def Introspect(self, object_path, connection):
1298
"""Overloading of standard D-Bus method.
1299
1300
Inserts annotation tags on methods and signals.
1301
"""
1302
xmlstring = dbus.service.Object.Introspect(self, object_path,
1303
connection)
1304
try:
1305
document = xml.dom.minidom.parseString(xmlstring)
1306
1307
for if_tag in document.getElementsByTagName("interface"):
1308
# Add annotation tags
1309
for typ in ("method", "signal"):
1310
for tag in if_tag.getElementsByTagName(typ):
1311
annots = dict()
1312
for name, prop in (self.
1313
_get_all_dbus_things(typ)):
1314
if (name == tag.getAttribute("name")
1315
and prop._dbus_interface
1316
== if_tag.getAttribute("name")):
1317
annots.update(getattr(
1318
prop, "_dbus_annotations", {}))
1319
for name, value in annots.items():
1320
ann_tag = document.createElement(
1321
"annotation")
1322
ann_tag.setAttribute("name", name)
1323
ann_tag.setAttribute("value", value)
1324
tag.appendChild(ann_tag)
1325
# Add interface annotation tags
1326
for annotation, value in dict(
1327
itertools.chain.from_iterable(
1328
annotations().items()
1329
for name, annotations
1330
in self._get_all_dbus_things("interface")
1331
if name == if_tag.getAttribute("name")
1332
)).items():
1333
ann_tag = document.createElement("annotation")
1334
ann_tag.setAttribute("name", annotation)
1335
ann_tag.setAttribute("value", value)
1336
if_tag.appendChild(ann_tag)
1337
# Fix argument name for the Introspect method itself
1338
if (if_tag.getAttribute("name")
1339
== dbus.INTROSPECTABLE_IFACE):
1340
for cn in if_tag.getElementsByTagName("method"):
1341
if cn.getAttribute("name") == "Introspect":
1342
for arg in cn.getElementsByTagName("arg"):
1343
if (arg.getAttribute("direction")
1344
== "out"):
1345
arg.setAttribute("name",
1346
"xml_data")
1347
xmlstring = document.toxml("utf-8")
1348
document.unlink()
1349
except (AttributeError, xml.dom.DOMException,
1350
xml.parsers.expat.ExpatError) as error:
1351
logger.error("Failed to override Introspection method",
1352
exc_info=error)
1353
return xmlstring
1354
1355
1356
class DBusObjectWithProperties(DBusObjectWithAnnotations):
793
1357
"""A D-Bus object with properties.
794
1358
795
1359
Classes inheriting from this can use the dbus_service_property
796
1360
decorator to expose methods as D-Bus properties. It exposes the
797
1361
standard Get(), Set(), and GetAll() methods on the D-Bus.
798
1362
"""
799
800
@staticmethod
801
def _is_dbus_property(obj):
802
return getattr(obj, "_dbus_is_property", False)
803
804
def _get_all_dbus_properties(self):
805
"""Returns a generator of (name, attribute) pairs
806
"""
807
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
808
for cls in self.__class__.__mro__
809
for name, prop in
810
inspect.getmembers(cls, self._is_dbus_property))
811
1363
812
1364
def _get_dbus_property(self, interface_name, property_name):
813
1365
"""Returns a bound method if one exists which is a D-Bus
814
1366
property with the specified name and interface.
815
1367
"""
816
for cls in self.__class__.__mro__:
817
for name, value in (inspect.getmembers
818
(cls, self._is_dbus_property)):
1368
for cls in self.__class__.__mro__:
1369
for name, value in inspect.getmembers(
1370
cls, self._is_dbus_thing("property")):
819
1371
if (value._dbus_name == property_name
820
1372
and value._dbus_interface == interface_name):
821
1373
return value.__get__(self)
822
1374
823
1375
# No such property
824
raise DBusPropertyNotFound(self.dbus_object_path + ":"
825
+ interface_name + "."
826
+ property_name)
827
828
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1376
raise DBusPropertyNotFound("{}:{}.{}".format(
1377
self.dbus_object_path, interface_name, property_name))
1378
1379
@classmethod
1380
def _get_all_interface_names(cls):
1381
"""Get a sequence of all interfaces supported by an object"""
1382
return (name for name in set(getattr(getattr(x, attr),
1383
"_dbus_interface", None)
1384
for x in (inspect.getmro(cls))
1385
for attr in dir(x))
1386
if name is not None)
1387
1388
@dbus.service.method(dbus.PROPERTIES_IFACE,
1389
in_signature="ss",
829
1390
out_signature="v")
830
1391
def Get(self, interface_name, property_name):
831
1392
"""Standard D-Bus property Get() method, see D-Bus standard.
837
1398
if not hasattr(value, "variant_level"):
838
1399
return value
839
1400
return type(value)(value, variant_level=value.variant_level+1)
840
1401
841
1402
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
842
1403
def Set(self, interface_name, property_name, value):
843
1404
"""Standard D-Bus property Set() method, see D-Bus standard.
849
1410
# The byte_arrays option is not supported yet on
850
1411
# signatures other than "ay".
851
1412
if prop._dbus_signature != "ay":
852
raise ValueError
853
value = dbus.ByteArray(b''.join(chr(byte)
854
for byte in value))
1413
raise ValueError("Byte arrays not supported for non-"
1414
"'ay' signature {!r}"
1415
.format(prop._dbus_signature))
1416
value = dbus.ByteArray(bytes(value))
855
1417
prop(value)
856
857
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1418
1419
@dbus.service.method(dbus.PROPERTIES_IFACE,
1420
in_signature="s",
858
1421
out_signature="a{sv}")
859
1422
def GetAll(self, interface_name):
860
1423
"""Standard D-Bus property GetAll() method, see D-Bus
861
1424
standard.
862
1425
863
1426
Note: Will not include properties with access="write".
864
1427
"""
865
1428
properties = {}
866
for name, prop in self._get_all_dbus_properties():
1429
for name, prop in self._get_all_dbus_things("property"):
867
1430
if (interface_name
868
1431
and interface_name != prop._dbus_interface):
869
1432
# Interface non-empty but did not match
875
1438
if not hasattr(value, "variant_level"):
876
1439
properties[name] = value
877
1440
continue
878
properties[name] = type(value)(value, variant_level=
879
value.variant_level+1)
1441
properties[name] = type(value)(
1442
value, variant_level=value.variant_level + 1)
880
1443
return dbus.Dictionary(properties, signature="sv")
881
1444
1445
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1446
def PropertiesChanged(self, interface_name, changed_properties,
1447
invalidated_properties):
1448
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1449
standard.
1450
"""
1451
pass
1452
882
1453
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
883
1454
out_signature="s",
884
1455
path_keyword='object_path',
885
1456
connection_keyword='connection')
886
1457
def Introspect(self, object_path, connection):
887
"""Standard D-Bus method, overloaded to insert property tags.
1458
"""Overloading of standard D-Bus method.
1459
1460
Inserts property tags and interface annotation tags.
888
1461
"""
889
xmlstring = dbus.service.Object.Introspect(self, object_path,
890
connection)
1462
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1463
object_path,
1464
connection)
891
1465
try:
892
1466
document = xml.dom.minidom.parseString(xmlstring)
1467
893
1468
def make_tag(document, name, prop):
894
1469
e = document.createElement("property")
895
1470
e.setAttribute("name", name)
896
1471
e.setAttribute("type", prop._dbus_signature)
897
1472
e.setAttribute("access", prop._dbus_access)
898
1473
return e
1474
899
1475
for if_tag in document.getElementsByTagName("interface"):
1476
# Add property tags
900
1477
for tag in (make_tag(document, name, prop)
901
1478
for name, prop
902
in self._get_all_dbus_properties()
1479
in self._get_all_dbus_things("property")
903
1480
if prop._dbus_interface
904
1481
== if_tag.getAttribute("name")):
905
1482
if_tag.appendChild(tag)
1483
# Add annotation tags for properties
1484
for tag in if_tag.getElementsByTagName("property"):
1485
annots = dict()
1486
for name, prop in self._get_all_dbus_things(
1487
"property"):
1488
if (name == tag.getAttribute("name")
1489
and prop._dbus_interface
1490
== if_tag.getAttribute("name")):
1491
annots.update(getattr(
1492
prop, "_dbus_annotations", {}))
1493
for name, value in annots.items():
1494
ann_tag = document.createElement(
1495
"annotation")
1496
ann_tag.setAttribute("name", name)
1497
ann_tag.setAttribute("value", value)
1498
tag.appendChild(ann_tag)
906
1499
# Add the names to the return values for the
907
1500
# "org.freedesktop.DBus.Properties" methods
908
1501
if (if_tag.getAttribute("name")
923
1516
except (AttributeError, xml.dom.DOMException,
924
1517
xml.parsers.expat.ExpatError) as error:
925
1518
logger.error("Failed to override Introspection method",
926
error)
927
return xmlstring
928
929
930
def datetime_to_dbus (dt, variant_level=0):
1519
exc_info=error)
1520
return xmlstring
1521
1522
1523
try:
1524
dbus.OBJECT_MANAGER_IFACE
1525
except AttributeError:
1526
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1527
1528
1529
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1530
"""A D-Bus object with an ObjectManager.
1531
1532
Classes inheriting from this exposes the standard
1533
GetManagedObjects call and the InterfacesAdded and
1534
InterfacesRemoved signals on the standard
1535
"org.freedesktop.DBus.ObjectManager" interface.
1536
1537
Note: No signals are sent automatically; they must be sent
1538
manually.
1539
"""
1540
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1541
out_signature="a{oa{sa{sv}}}")
1542
def GetManagedObjects(self):
1543
"""This function must be overridden"""
1544
raise NotImplementedError()
1545
1546
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1547
signature="oa{sa{sv}}")
1548
def InterfacesAdded(self, object_path, interfaces_and_properties):
1549
pass
1550
1551
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1552
def InterfacesRemoved(self, object_path, interfaces):
1553
pass
1554
1555
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1556
out_signature="s",
1557
path_keyword='object_path',
1558
connection_keyword='connection')
1559
def Introspect(self, object_path, connection):
1560
"""Overloading of standard D-Bus method.
1561
1562
Override return argument name of GetManagedObjects to be
1563
"objpath_interfaces_and_properties"
1564
"""
1565
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1566
object_path,
1567
connection)
1568
try:
1569
document = xml.dom.minidom.parseString(xmlstring)
1570
1571
for if_tag in document.getElementsByTagName("interface"):
1572
# Fix argument name for the GetManagedObjects method
1573
if (if_tag.getAttribute("name")
1574
== dbus.OBJECT_MANAGER_IFACE):
1575
for cn in if_tag.getElementsByTagName("method"):
1576
if (cn.getAttribute("name")
1577
== "GetManagedObjects"):
1578
for arg in cn.getElementsByTagName("arg"):
1579
if (arg.getAttribute("direction")
1580
== "out"):
1581
arg.setAttribute(
1582
"name",
1583
"objpath_interfaces"
1584
"_and_properties")
1585
xmlstring = document.toxml("utf-8")
1586
document.unlink()
1587
except (AttributeError, xml.dom.DOMException,
1588
xml.parsers.expat.ExpatError) as error:
1589
logger.error("Failed to override Introspection method",
1590
exc_info=error)
1591
return xmlstring
1592
1593
1594
def datetime_to_dbus(dt, variant_level=0):
931
1595
"""Convert a UTC datetime.datetime() to a D-Bus type."""
932
1596
if dt is None:
933
return dbus.String("", variant_level = variant_level)
934
return dbus.String(dt.isoformat(),
935
variant_level=variant_level)
936
937
938
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
939
.__metaclass__):
940
"""Applied to an empty subclass of a D-Bus object, this metaclass
941
will add additional D-Bus attributes matching a certain pattern.
1597
return dbus.String("", variant_level=variant_level)
1598
return dbus.String(dt.isoformat(), variant_level=variant_level)
1599
1600
1601
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1602
"""A class decorator; applied to a subclass of
1603
dbus.service.Object, it will add alternate D-Bus attributes with
1604
interface names according to the "alt_interface_names" mapping.
1605
Usage:
1606
1607
@alternate_dbus_interfaces({"org.example.Interface":
1608
"net.example.AlternateInterface"})
1609
class SampleDBusObject(dbus.service.Object):
1610
@dbus.service.method("org.example.Interface")
1611
def SampleDBusMethod():
1612
pass
1613
1614
The above "SampleDBusMethod" on "SampleDBusObject" will be
1615
reachable via two interfaces: "org.example.Interface" and
1616
"net.example.AlternateInterface", the latter of which will have
1617
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1618
"true", unless "deprecate" is passed with a False value.
1619
1620
This works for methods and signals, and also for D-Bus properties
1621
(from DBusObjectWithProperties) and interfaces (from the
1622
dbus_interface_annotations decorator).
942
1623
"""
943
def __new__(mcs, name, bases, attr):
944
# Go through all the base classes which could have D-Bus
945
# methods, signals, or properties in them
946
for base in (b for b in bases
947
if issubclass(b, dbus.service.Object)):
948
# Go though all attributes of the base class
949
for attrname, attribute in inspect.getmembers(base):
1624
1625
def wrapper(cls):
1626
for orig_interface_name, alt_interface_name in (
1627
alt_interface_names.items()):
1628
attr = {}
1629
interface_names = set()
1630
# Go though all attributes of the class
1631
for attrname, attribute in inspect.getmembers(cls):
950
1632
# Ignore non-D-Bus attributes, and D-Bus attributes
951
1633
# with the wrong interface name
952
1634
if (not hasattr(attribute, "_dbus_interface")
953
or not attribute._dbus_interface
954
.startswith("se.recompile.Mandos")):
1635
or not attribute._dbus_interface.startswith(
1636
orig_interface_name)):
955
1637
continue
956
1638
# Create an alternate D-Bus interface name based on
957
1639
# the current name
958
alt_interface = (attribute._dbus_interface
959
.replace("se.recompile.Mandos",
960
"se.bsnet.fukt.Mandos"))
1640
alt_interface = attribute._dbus_interface.replace(
1641
orig_interface_name, alt_interface_name)
1642
interface_names.add(alt_interface)
961
1643
# Is this a D-Bus signal?
962
1644
if getattr(attribute, "_dbus_is_signal", False):
963
# Extract the original non-method function by
964
# black magic
965
nonmethod_func = (dict(
1645
# Extract the original non-method undecorated
1646
# function by black magic
1647
if sys.version_info.major == 2:
1648
nonmethod_func = (dict(
966
1649
zip(attribute.func_code.co_freevars,
967
attribute.__closure__))["func"]
968
.cell_contents)
1650
attribute.__closure__))
1651
["func"].cell_contents)
1652
else:
1653
nonmethod_func = (dict(
1654
zip(attribute.__code__.co_freevars,
1655
attribute.__closure__))
1656
["func"].cell_contents)
969
1657
# Create a new, but exactly alike, function
970
1658
# object, and decorate it to be a new D-Bus signal
971
1659
# with the alternate D-Bus interface name
972
new_function = (dbus.service.signal
973
(alt_interface,
974
attribute._dbus_signature)
975
(types.FunctionType(
976
nonmethod_func.func_code,
977
nonmethod_func.func_globals,
978
nonmethod_func.func_name,
979
nonmethod_func.func_defaults,
980
nonmethod_func.func_closure)))
1660
new_function = copy_function(nonmethod_func)
1661
new_function = (dbus.service.signal(
1662
alt_interface,
1663
attribute._dbus_signature)(new_function))
1664
# Copy annotations, if any
1665
try:
1666
new_function._dbus_annotations = dict(
1667
attribute._dbus_annotations)
1668
except AttributeError:
1669
pass
1670
981
1671
# Define a creator of a function to call both the
982
# old and new functions, so both the old and new
983
# signals gets sent when the function is called
1672
# original and alternate functions, so both the
1673
# original and alternate signals gets sent when
1674
# the function is called
984
1675
def fixscope(func1, func2):
985
1676
"""This function is a scope container to pass
986
1677
func1 and func2 to the "call_both" function
987
1678
outside of its arguments"""
1679
1680
@functools.wraps(func2)
988
1681
def call_both(*args, **kwargs):
989
1682
"""This function will emit two D-Bus
990
1683
signals by calling func1 and func2"""
991
1684
func1(*args, **kwargs)
992
1685
func2(*args, **kwargs)
1686
# Make wrapper function look like a D-Bus
1687
# signal
1688
for name, attr in inspect.getmembers(func2):
1689
if name.startswith("_dbus_"):
1690
setattr(call_both, name, attr)
1691
993
1692
return call_both
994
1693
# Create the "call_both" function and add it to
995
1694
# the class
996
attr[attrname] = fixscope(attribute,
997
new_function)
1695
attr[attrname] = fixscope(attribute, new_function)
998
1696
# Is this a D-Bus method?
999
1697
elif getattr(attribute, "_dbus_is_method", False):
1000
1698
# Create a new, but exactly alike, function
1001
1699
# object. Decorate it to be a new D-Bus method
1002
1700
# with the alternate D-Bus interface name. Add it
1003
1701
# to the class.
1004
attr[attrname] = (dbus.service.method
1005
(alt_interface,
1006
attribute._dbus_in_signature,
1007
attribute._dbus_out_signature)
1008
(types.FunctionType
1009
(attribute.func_code,
1010
attribute.func_globals,
1011
attribute.func_name,
1012
attribute.func_defaults,
1013
attribute.func_closure)))
1702
attr[attrname] = (
1703
dbus.service.method(
1704
alt_interface,
1705
attribute._dbus_in_signature,
1706
attribute._dbus_out_signature)
1707
(copy_function(attribute)))
1708
# Copy annotations, if any
1709
try:
1710
attr[attrname]._dbus_annotations = dict(
1711
attribute._dbus_annotations)
1712
except AttributeError:
1713
pass
1014
1714
# Is this a D-Bus property?
1015
1715
elif getattr(attribute, "_dbus_is_property", False):
1016
1716
# Create a new, but exactly alike, function
1017
1717
# object, and decorate it to be a new D-Bus
1018
1718
# property with the alternate D-Bus interface
1019
1719
# name. Add it to the class.
1020
attr[attrname] = (dbus_service_property
1021
(alt_interface,
1022
attribute._dbus_signature,
1023
attribute._dbus_access,
1024
attribute
1025
._dbus_get_args_options
1026
["byte_arrays"])
1027
(types.FunctionType
1028
(attribute.func_code,
1029
attribute.func_globals,
1030
attribute.func_name,
1031
attribute.func_defaults,
1032
attribute.func_closure)))
1033
return type.__new__(mcs, name, bases, attr)
1034
1035
1720
attr[attrname] = (dbus_service_property(
1721
alt_interface, attribute._dbus_signature,
1722
attribute._dbus_access,
1723
attribute._dbus_get_args_options
1724
["byte_arrays"])
1725
(copy_function(attribute)))
1726
# Copy annotations, if any
1727
try:
1728
attr[attrname]._dbus_annotations = dict(
1729
attribute._dbus_annotations)
1730
except AttributeError:
1731
pass
1732
# Is this a D-Bus interface?
1733
elif getattr(attribute, "_dbus_is_interface", False):
1734
# Create a new, but exactly alike, function
1735
# object. Decorate it to be a new D-Bus interface
1736
# with the alternate D-Bus interface name. Add it
1737
# to the class.
1738
attr[attrname] = (
1739
dbus_interface_annotations(alt_interface)
1740
(copy_function(attribute)))
1741
if deprecate:
1742
# Deprecate all alternate interfaces
1743
iname = "_AlternateDBusNames_interface_annotation{}"
1744
for interface_name in interface_names:
1745
1746
@dbus_interface_annotations(interface_name)
1747
def func(self):
1748
return {"org.freedesktop.DBus.Deprecated":
1749
"true"}
1750
# Find an unused name
1751
for aname in (iname.format(i)
1752
for i in itertools.count()):
1753
if aname not in attr:
1754
attr[aname] = func
1755
break
1756
if interface_names:
1757
# Replace the class with a new subclass of it with
1758
# methods, signals, etc. as created above.
1759
if sys.version_info.major == 2:
1760
cls = type(b"{}Alternate".format(cls.__name__),
1761
(cls, ), attr)
1762
else:
1763
cls = type("{}Alternate".format(cls.__name__),
1764
(cls, ), attr)
1765
return cls
1766
1767
return wrapper
1768
1769
1770
@alternate_dbus_interfaces({"se.recompile.Mandos":
1771
"se.bsnet.fukt.Mandos"})
1036
1772
class ClientDBus(Client, DBusObjectWithProperties):
1037
1773
"""A Client class using D-Bus
1038
1774
1039
1775
Attributes:
1040
1776
dbus_object_path: dbus.ObjectPath
1041
1777
bus: dbus.SystemBus()
1042
1778
"""
1043
1779
1044
1780
runtime_expansions = (Client.runtime_expansions
1045
+ ("dbus_object_path",))
1046
1781
+ ("dbus_object_path", ))
1782
1783
_interface = "se.recompile.Mandos.Client"
1784
1047
1785
# dbus.service.Object doesn't use super(), so we can't either.
1048
1049
def __init__(self, bus = None, *args, **kwargs):
1786
1787
def __init__(self, bus=None, *args, **kwargs):
1050
1788
self.bus = bus
1051
1789
Client.__init__(self, *args, **kwargs)
1052
self._approvals_pending = 0
1053
1054
self._approvals_pending = 0
1055
1790
# Only now, when this client is initialized, can it show up on
1056
1791
# the D-Bus
1057
client_object_name = unicode(self.name).translate(
1792
client_object_name = str(self.name).translate(
1058
1793
{ord("."): ord("_"),
1059
1794
ord("-"): ord("_")})
1060
self.dbus_object_path = (dbus.ObjectPath
1061
("/clients/" + client_object_name))
1795
self.dbus_object_path = dbus.ObjectPath(
1796
"/clients/" + client_object_name)
1062
1797
DBusObjectWithProperties.__init__(self, self.bus,
1063
1798
self.dbus_object_path)
1064
1065
def notifychangeproperty(transform_func,
1066
dbus_name, type_func=lambda x: x,
1067
variant_level=1):
1799
1800
def notifychangeproperty(transform_func, dbus_name,
1801
type_func=lambda x: x,
1802
variant_level=1,
1803
invalidate_only=False,
1804
_interface=_interface):
1068
1805
""" Modify a variable so that it's a property which announces
1069
1806
its changes to DBus.
1070
1807
1071
1808
transform_fun: Function that takes a value and a variant_level
1072
1809
and transforms it to a D-Bus type.
1073
1810
dbus_name: D-Bus name of the variable
1075
1812
to the D-Bus. Default: no transform
1076
1813
variant_level: D-Bus variant level. Default: 1
1077
1814
"""
1078
attrname = "_{0}".format(dbus_name)
1815
attrname = "_{}".format(dbus_name)
1816
1079
1817
def setter(self, value):
1080
1818
if hasattr(self, "dbus_object_path"):
1081
1819
if (not hasattr(self, attrname) or
1082
1820
type_func(getattr(self, attrname, None))
1083
1821
!= type_func(value)):
1084
dbus_value = transform_func(type_func(value),
1085
variant_level
1086
=variant_level)
1087
self.PropertyChanged(dbus.String(dbus_name),
1088
dbus_value)
1822
if invalidate_only:
1823
self.PropertiesChanged(
1824
_interface, dbus.Dictionary(),
1825
dbus.Array((dbus_name, )))
1826
else:
1827
dbus_value = transform_func(
1828
type_func(value),
1829
variant_level=variant_level)
1830
self.PropertyChanged(dbus.String(dbus_name),
1831
dbus_value)
1832
self.PropertiesChanged(
1833
_interface,
1834
dbus.Dictionary({dbus.String(dbus_name):
1835
dbus_value}),
1836
dbus.Array())
1089
1837
setattr(self, attrname, value)
1090
1838
1091
1839
return property(lambda self: getattr(self, attrname), setter)
1092
1093
1840
1094
1841
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1095
1842
approvals_pending = notifychangeproperty(dbus.Boolean,
1096
1843
"ApprovalPending",
1097
type_func = bool)
1844
type_func=bool)
1098
1845
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1099
1846
last_enabled = notifychangeproperty(datetime_to_dbus,
1100
1847
"LastEnabled")
1101
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1102
type_func = lambda checker:
1103
checker is not None)
1848
checker = notifychangeproperty(
1849
dbus.Boolean, "CheckerRunning",
1850
type_func=lambda checker: checker is not None)
1104
1851
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1105
1852
"LastCheckedOK")
1853
last_checker_status = notifychangeproperty(dbus.Int16,
1854
"LastCheckerStatus")
1106
1855
last_approval_request = notifychangeproperty(
1107
1856
datetime_to_dbus, "LastApprovalRequest")
1108
1857
approved_by_default = notifychangeproperty(dbus.Boolean,
1109
1858
"ApprovedByDefault")
1110
approval_delay = notifychangeproperty(dbus.UInt64,
1111
"ApprovalDelay",
1112
type_func =
1113
timedelta_to_milliseconds)
1859
approval_delay = notifychangeproperty(
1860
dbus.UInt64, "ApprovalDelay",
1861
type_func=lambda td: td.total_seconds() * 1000)
1114
1862
approval_duration = notifychangeproperty(
1115
1863
dbus.UInt64, "ApprovalDuration",
1116
type_func = timedelta_to_milliseconds)
1864
type_func=lambda td: td.total_seconds() * 1000)
1117
1865
host = notifychangeproperty(dbus.String, "Host")
1118
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1119
type_func =
1120
timedelta_to_milliseconds)
1866
timeout = notifychangeproperty(
1867
dbus.UInt64, "Timeout",
1868
type_func=lambda td: td.total_seconds() * 1000)
1121
1869
extended_timeout = notifychangeproperty(
1122
1870
dbus.UInt64, "ExtendedTimeout",
1123
type_func = timedelta_to_milliseconds)
1124
interval = notifychangeproperty(dbus.UInt64,
1125
"Interval",
1126
type_func =
1127
timedelta_to_milliseconds)
1871
type_func=lambda td: td.total_seconds() * 1000)
1872
interval = notifychangeproperty(
1873
dbus.UInt64, "Interval",
1874
type_func=lambda td: td.total_seconds() * 1000)
1128
1875
checker_command = notifychangeproperty(dbus.String, "Checker")
1129
1876
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1877
invalidate_only=True)
1878
1130
1879
del notifychangeproperty
1131
1880
1132
1881
def __del__(self, *args, **kwargs):
1133
1882
try:
1134
1883
self.remove_from_connection()
1137
1886
if hasattr(DBusObjectWithProperties, "__del__"):
1138
1887
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1139
1888
Client.__del__(self, *args, **kwargs)
1140
1141
def checker_callback(self, pid, condition, command,
1142
*args, **kwargs):
1143
self.checker_callback_tag = None
1144
self.checker = None
1145
if os.WIFEXITED(condition):
1146
exitstatus = os.WEXITSTATUS(condition)
1889
1890
def checker_callback(self, source, condition,
1891
connection, command, *args, **kwargs):
1892
ret = Client.checker_callback(self, source, condition,
1893
connection, command, *args,
1894
**kwargs)
1895
exitstatus = self.last_checker_status
1896
if exitstatus >= 0:
1147
1897
# Emit D-Bus signal
1148
1898
self.CheckerCompleted(dbus.Int16(exitstatus),
1149
dbus.Int64(condition),
1899
# This is specific to GNU libC
1900
dbus.Int64(exitstatus << 8),
1150
1901
dbus.String(command))
1151
1902
else:
1152
1903
# Emit D-Bus signal
1153
1904
self.CheckerCompleted(dbus.Int16(-1),
1154
dbus.Int64(condition),
1905
dbus.Int64(
1906
# This is specific to GNU libC
1907
(exitstatus << 8)
1908
| self.last_checker_signal),
1155
1909
dbus.String(command))
1156
1157
return Client.checker_callback(self, pid, condition, command,
1158
*args, **kwargs)
1159
1910
return ret
1911
1160
1912
def start_checker(self, *args, **kwargs):
1161
old_checker = self.checker
1162
if self.checker is not None:
1163
old_checker_pid = self.checker.pid
1164
else:
1165
old_checker_pid = None
1913
old_checker_pid = getattr(self.checker, "pid", None)
1166
1914
r = Client.start_checker(self, *args, **kwargs)
1167
1915
# Only if new checker process was started
1168
1916
if (self.checker is not None
1170
1918
# Emit D-Bus signal
1171
1919
self.CheckerStarted(self.current_checker_command)
1172
1920
return r
1173
1921
1174
1922
def _reset_approved(self):
1175
1923
self.approved = None
1176
1924
return False
1177
1925
1178
1926
def approve(self, value=True):
1179
self.send_changedstate()
1180
1927
self.approved = value
1181
gobject.timeout_add(timedelta_to_milliseconds
1182
(self.approval_duration),
1183
self._reset_approved)
1184
1185
1186
## D-Bus methods, signals & properties
1187
_interface = "se.recompile.Mandos.Client"
1188
1189
## Signals
1190
1928
GLib.timeout_add(int(self.approval_duration.total_seconds()
1929
* 1000), self._reset_approved)
1930
self.send_changedstate()
1931
1932
# D-Bus methods, signals & properties
1933
1934
# Interfaces
1935
1936
# Signals
1937
1191
1938
# CheckerCompleted - signal
1192
1939
@dbus.service.signal(_interface, signature="nxs")
1193
1940
def CheckerCompleted(self, exitcode, waitstatus, command):
1194
1941
"D-Bus signal"
1195
1942
pass
1196
1943
1197
1944
# CheckerStarted - signal
1198
1945
@dbus.service.signal(_interface, signature="s")
1199
1946
def CheckerStarted(self, command):
1200
1947
"D-Bus signal"
1201
1948
pass
1202
1949
1203
1950
# PropertyChanged - signal
1951
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1204
1952
@dbus.service.signal(_interface, signature="sv")
1205
1953
def PropertyChanged(self, property, value):
1206
1954
"D-Bus signal"
1207
1955
pass
1208
1956
1209
1957
# GotSecret - signal
1210
1958
@dbus.service.signal(_interface)
1211
1959
def GotSecret(self):
1214
1962
server to mandos-client
1215
1963
"""
1216
1964
pass
1217
1965
1218
1966
# Rejected - signal
1219
1967
@dbus.service.signal(_interface, signature="s")
1220
1968
def Rejected(self, reason):
1221
1969
"D-Bus signal"
1222
1970
pass
1223
1971
1224
1972
# NeedApproval - signal
1225
1973
@dbus.service.signal(_interface, signature="tb")
1226
1974
def NeedApproval(self, timeout, default):
1227
1975
"D-Bus signal"
1228
1976
return self.need_approval()
1229
1230
# NeRwequest - signal
1231
@dbus.service.signal(_interface, signature="s")
1232
def NewRequest(self, ip):
1233
"""D-Bus signal
1234
Is sent after a client request a password.
1235
"""
1236
pass
1237
1238
## Methods
1239
1977
1978
# Methods
1979
1240
1980
# Approve - method
1241
1981
@dbus.service.method(_interface, in_signature="b")
1242
1982
def Approve(self, value):
1243
1983
self.approve(value)
1244
1984
1245
1985
# CheckedOK - method
1246
1986
@dbus.service.method(_interface)
1247
1987
def CheckedOK(self):
1248
1988
self.checked_ok()
1249
1989
1250
1990
# Enable - method
1991
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1251
1992
@dbus.service.method(_interface)
1252
1993
def Enable(self):
1253
1994
"D-Bus method"
1254
1995
self.enable()
1255
1996
1256
1997
# StartChecker - method
1998
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1257
1999
@dbus.service.method(_interface)
1258
2000
def StartChecker(self):
1259
2001
"D-Bus method"
1260
2002
self.start_checker()
1261
2003
1262
2004
# Disable - method
2005
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1263
2006
@dbus.service.method(_interface)
1264
2007
def Disable(self):
1265
2008
"D-Bus method"
1266
2009
self.disable()
1267
2010
1268
2011
# StopChecker - method
2012
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1269
2013
@dbus.service.method(_interface)
1270
2014
def StopChecker(self):
1271
2015
self.stop_checker()
1272
1273
## Properties
1274
2016
2017
# Properties
2018
1275
2019
# ApprovalPending - property
1276
2020
@dbus_service_property(_interface, signature="b", access="read")
1277
2021
def ApprovalPending_dbus_property(self):
1278
2022
return dbus.Boolean(bool(self.approvals_pending))
1279
2023
1280
2024
# ApprovedByDefault - property
1281
@dbus_service_property(_interface, signature="b",
2025
@dbus_service_property(_interface,
2026
signature="b",
1282
2027
access="readwrite")
1283
2028
def ApprovedByDefault_dbus_property(self, value=None):
1284
2029
if value is None: # get
1285
2030
return dbus.Boolean(self.approved_by_default)
1286
2031
self.approved_by_default = bool(value)
1287
2032
1288
2033
# ApprovalDelay - property
1289
@dbus_service_property(_interface, signature="t",
2034
@dbus_service_property(_interface,
2035
signature="t",
1290
2036
access="readwrite")
1291
2037
def ApprovalDelay_dbus_property(self, value=None):
1292
2038
if value is None: # get
1293
return dbus.UInt64(self.approval_delay_milliseconds())
2039
return dbus.UInt64(self.approval_delay.total_seconds()
2040
* 1000)
1294
2041
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1295
2042
1296
2043
# ApprovalDuration - property
1297
@dbus_service_property(_interface, signature="t",
2044
@dbus_service_property(_interface,
2045
signature="t",
1298
2046
access="readwrite")
1299
2047
def ApprovalDuration_dbus_property(self, value=None):
1300
2048
if value is None: # get
1301
return dbus.UInt64(timedelta_to_milliseconds(
1302
self.approval_duration))
2049
return dbus.UInt64(self.approval_duration.total_seconds()
2050
* 1000)
1303
2051
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1304
2052
1305
2053
# Name - property
2054
@dbus_annotations(
2055
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1306
2056
@dbus_service_property(_interface, signature="s", access="read")
1307
2057
def Name_dbus_property(self):
1308
2058
return dbus.String(self.name)
1309
2059
2060
# KeyID - property
2061
@dbus_annotations(
2062
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2063
@dbus_service_property(_interface, signature="s", access="read")
2064
def KeyID_dbus_property(self):
2065
return dbus.String(self.key_id)
2066
1310
2067
# Fingerprint - property
2068
@dbus_annotations(
2069
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1311
2070
@dbus_service_property(_interface, signature="s", access="read")
1312
2071
def Fingerprint_dbus_property(self):
1313
2072
return dbus.String(self.fingerprint)
1314
2073
1315
2074
# Host - property
1316
@dbus_service_property(_interface, signature="s",
2075
@dbus_service_property(_interface,
2076
signature="s",
1317
2077
access="readwrite")
1318
2078
def Host_dbus_property(self, value=None):
1319
2079
if value is None: # get
1320
2080
return dbus.String(self.host)
1321
self.host = unicode(value)
1322
2081
self.host = str(value)
2082
1323
2083
# Created - property
2084
@dbus_annotations(
2085
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1324
2086
@dbus_service_property(_interface, signature="s", access="read")
1325
2087
def Created_dbus_property(self):
1326
2088
return datetime_to_dbus(self.created)
1327
2089
1328
2090
# LastEnabled - property
1329
2091
@dbus_service_property(_interface, signature="s", access="read")
1330
2092
def LastEnabled_dbus_property(self):
1331
2093
return datetime_to_dbus(self.last_enabled)
1332
2094
1333
2095
# Enabled - property
1334
@dbus_service_property(_interface, signature="b",
2096
@dbus_service_property(_interface,
2097
signature="b",
1335
2098
access="readwrite")
1336
2099
def Enabled_dbus_property(self, value=None):
1337
2100
if value is None: # get
1340
2103
self.enable()
1341
2104
else:
1342
2105
self.disable()
1343
2106
1344
2107
# LastCheckedOK - property
1345
@dbus_service_property(_interface, signature="s",
2108
@dbus_service_property(_interface,
2109
signature="s",
1346
2110
access="readwrite")
1347
2111
def LastCheckedOK_dbus_property(self, value=None):
1348
2112
if value is not None:
1349
2113
self.checked_ok()
1350
2114
return
1351
2115
return datetime_to_dbus(self.last_checked_ok)
1352
2116
2117
# LastCheckerStatus - property
2118
@dbus_service_property(_interface, signature="n", access="read")
2119
def LastCheckerStatus_dbus_property(self):
2120
return dbus.Int16(self.last_checker_status)
2121
1353
2122
# Expires - property
1354
2123
@dbus_service_property(_interface, signature="s", access="read")
1355
2124
def Expires_dbus_property(self):
1356
2125
return datetime_to_dbus(self.expires)
1357
2126
1358
2127
# LastApprovalRequest - property
1359
2128
@dbus_service_property(_interface, signature="s", access="read")
1360
2129
def LastApprovalRequest_dbus_property(self):
1361
2130
return datetime_to_dbus(self.last_approval_request)
1362
2131
1363
2132
# Timeout - property
1364
@dbus_service_property(_interface, signature="t",
2133
@dbus_service_property(_interface,
2134
signature="t",
1365
2135
access="readwrite")
1366
2136
def Timeout_dbus_property(self, value=None):
1367
2137
if value is None: # get
1368
return dbus.UInt64(self.timeout_milliseconds())
2138
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2139
old_timeout = self.timeout
1369
2140
self.timeout = datetime.timedelta(0, 0, 0, value)
1370
# Reschedule timeout
2141
# Reschedule disabling
1371
2142
if self.enabled:
1372
2143
now = datetime.datetime.utcnow()
1373
time_to_die = timedelta_to_milliseconds(
1374
(self.last_checked_ok + self.timeout) - now)
1375
if time_to_die <= 0:
2144
self.expires += self.timeout - old_timeout
2145
if self.expires <= now:
1376
2146
# The timeout has passed
1377
2147
self.disable()
1378
2148
else:
1379
self.expires = (now +
1380
datetime.timedelta(milliseconds =
1381
time_to_die))
1382
2149
if (getattr(self, "disable_initiator_tag", None)
1383
2150
is None):
1384
2151
return
1385
gobject.source_remove(self.disable_initiator_tag)
1386
self.disable_initiator_tag = (gobject.timeout_add
1387
(time_to_die,
1388
self.disable))
1389
2152
GLib.source_remove(self.disable_initiator_tag)
2153
self.disable_initiator_tag = GLib.timeout_add(
2154
int((self.expires - now).total_seconds() * 1000),
2155
self.disable)
2156
1390
2157
# ExtendedTimeout - property
1391
@dbus_service_property(_interface, signature="t",
2158
@dbus_service_property(_interface,
2159
signature="t",
1392
2160
access="readwrite")
1393
2161
def ExtendedTimeout_dbus_property(self, value=None):
1394
2162
if value is None: # get
1395
return dbus.UInt64(self.extended_timeout_milliseconds())
2163
return dbus.UInt64(self.extended_timeout.total_seconds()
2164
* 1000)
1396
2165
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1397
2166
1398
2167
# Interval - property
1399
@dbus_service_property(_interface, signature="t",
2168
@dbus_service_property(_interface,
2169
signature="t",
1400
2170
access="readwrite")
1401
2171
def Interval_dbus_property(self, value=None):
1402
2172
if value is None: # get
1403
return dbus.UInt64(self.interval_milliseconds())
2173
return dbus.UInt64(self.interval.total_seconds() * 1000)
1404
2174
self.interval = datetime.timedelta(0, 0, 0, value)
1405
2175
if getattr(self, "checker_initiator_tag", None) is None:
1406
2176
return
1407
2177
if self.enabled:
1408
2178
# Reschedule checker run
1409
gobject.source_remove(self.checker_initiator_tag)
1410
self.checker_initiator_tag = (gobject.timeout_add
1411
(value, self.start_checker))
1412
self.start_checker() # Start one now, too
1413
2179
GLib.source_remove(self.checker_initiator_tag)
2180
self.checker_initiator_tag = GLib.timeout_add(
2181
value, self.start_checker)
2182
self.start_checker() # Start one now, too
2183
1414
2184
# Checker - property
1415
@dbus_service_property(_interface, signature="s",
2185
@dbus_service_property(_interface,
2186
signature="s",
1416
2187
access="readwrite")
1417
2188
def Checker_dbus_property(self, value=None):
1418
2189
if value is None: # get
1419
2190
return dbus.String(self.checker_command)
1420
self.checker_command = unicode(value)
1421
2191
self.checker_command = str(value)
2192
1422
2193
# CheckerRunning - property
1423
@dbus_service_property(_interface, signature="b",
2194
@dbus_service_property(_interface,
2195
signature="b",
1424
2196
access="readwrite")
1425
2197
def CheckerRunning_dbus_property(self, value=None):
1426
2198
if value is None: # get
1429
2201
self.start_checker()
1430
2202
else:
1431
2203
self.stop_checker()
1432
2204
1433
2205
# ObjectPath - property
2206
@dbus_annotations(
2207
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2208
"org.freedesktop.DBus.Deprecated": "true"})
1434
2209
@dbus_service_property(_interface, signature="o", access="read")
1435
2210
def ObjectPath_dbus_property(self):
1436
return self.dbus_object_path # is already a dbus.ObjectPath
1437
2211
return self.dbus_object_path # is already a dbus.ObjectPath
2212
1438
2213
# Secret = property
1439
@dbus_service_property(_interface, signature="ay",
1440
access="write", byte_arrays=True)
2214
@dbus_annotations(
2215
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2216
"invalidates"})
2217
@dbus_service_property(_interface,
2218
signature="ay",
2219
access="write",
2220
byte_arrays=True)
1441
2221
def Secret_dbus_property(self, value):
1442
self.secret = str(value)
1443
2222
self.secret = bytes(value)
2223
1444
2224
del _interface
1445
2225
1446
2226
1447
class ProxyClient(object):
1448
def __init__(self, child_pipe, fpr, address):
2227
class ProxyClient:
2228
def __init__(self, child_pipe, key_id, fpr, address):
1449
2229
self._pipe = child_pipe
1450
self._pipe.send(('init', fpr, address))
2230
self._pipe.send(('init', key_id, fpr, address))
1451
2231
if not self._pipe.recv():
1452
raise KeyError()
1453
2232
raise KeyError(key_id or fpr)
2233
1454
2234
def __getattribute__(self, name):
1455
2235
if name == '_pipe':
1456
2236
return super(ProxyClient, self).__getattribute__(name)
1459
2239
if data[0] == 'data':
1460
2240
return data[1]
1461
2241
if data[0] == 'function':
2242
1462
2243
def func(*args, **kwargs):
1463
2244
self._pipe.send(('funcall', name, args, kwargs))
1464
2245
return self._pipe.recv()[1]
2246
1465
2247
return func
1466
2248
1467
2249
def __setattr__(self, name, value):
1468
2250
if name == '_pipe':
1469
2251
return super(ProxyClient, self).__setattr__(name, value)
1470
2252
self._pipe.send(('setattr', name, value))
1471
2253
1472
2254
1473
class ClientDBusTransitional(ClientDBus):
1474
__metaclass__ = AlternateDBusNamesMetaclass
1475
1476
1477
2255
class ClientHandler(socketserver.BaseRequestHandler, object):
1478
2256
"""A class to handle client connections.
1479
2257
1480
2258
Instantiated once for each connection to handle it.
1481
2259
Note: This will run in its own forked process."""
1482
2260
1483
2261
def handle(self):
1484
2262
with contextlib.closing(self.server.child_pipe) as child_pipe:
1485
2263
logger.info("TCP connection from: %s",
1486
unicode(self.client_address))
2264
str(self.client_address))
1487
2265
logger.debug("Pipe FD: %d",
1488
2266
self.server.child_pipe.fileno())
1489
1490
session = (gnutls.connection
1491
.ClientSession(self.request,
1492
gnutls.connection
1493
.X509Credentials()))
1494
1495
# Note: gnutls.connection.X509Credentials is really a
1496
# generic GnuTLS certificate credentials object so long as
1497
# no X.509 keys are added to it. Therefore, we can use it
1498
# here despite using OpenPGP certificates.
1499
1500
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1501
# "+AES-256-CBC", "+SHA1",
1502
# "+COMP-NULL", "+CTYPE-OPENPGP",
1503
# "+DHE-DSS"))
2267
2268
session = gnutls.ClientSession(self.request)
2269
2270
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2271
# "+AES-256-CBC", "+SHA1",
2272
# "+COMP-NULL", "+CTYPE-OPENPGP",
2273
# "+DHE-DSS"))
1504
2274
# Use a fallback default, since this MUST be set.
1505
2275
priority = self.server.gnutls_priority
1506
2276
if priority is None:
1507
2277
priority = "NORMAL"
1508
(gnutls.library.functions
1509
.gnutls_priority_set_direct(session._c_object,
1510
priority, None))
1511
2278
gnutls.priority_set_direct(session._c_object,
2279
priority.encode("utf-8"),
2280
None)
2281
1512
2282
# Start communication using the Mandos protocol
1513
2283
# Get protocol number
1514
2284
line = self.request.makefile().readline()
1515
2285
logger.debug("Protocol version: %r", line)
1516
2286
try:
1517
2287
if int(line.strip().split()[0]) > 1:
1518
raise RuntimeError
2288
raise RuntimeError(line)
1519
2289
except (ValueError, IndexError, RuntimeError) as error:
1520
2290
logger.error("Unknown protocol version: %s", error)
1521
2291
return
1522
2292
1523
2293
# Start GnuTLS connection
1524
2294
try:
1525
2295
session.handshake()
1526
except gnutls.errors.GNUTLSError as error:
2296
except gnutls.Error as error:
1527
2297
logger.warning("Handshake failed: %s", error)
1528
2298
# Do not run session.bye() here: the session is not
1529
2299
# established. Just abandon the request.
1530
2300
return
1531
2301
logger.debug("Handshake succeeded")
1532
2302
1533
2303
approval_required = False
1534
2304
try:
1535
try:
1536
fpr = self.fingerprint(self.peer_certificate
1537
(session))
1538
except (TypeError,
1539
gnutls.errors.GNUTLSError) as error:
1540
logger.warning("Bad certificate: %s", error)
1541
return
1542
logger.debug("Fingerprint: %s", fpr)
1543
1544
try:
1545
client = ProxyClient(child_pipe, fpr,
2305
if gnutls.has_rawpk:
2306
fpr = b""
2307
try:
2308
key_id = self.key_id(
2309
self.peer_certificate(session))
2310
except (TypeError, gnutls.Error) as error:
2311
logger.warning("Bad certificate: %s", error)
2312
return
2313
logger.debug("Key ID: %s", key_id)
2314
2315
else:
2316
key_id = b""
2317
try:
2318
fpr = self.fingerprint(
2319
self.peer_certificate(session))
2320
except (TypeError, gnutls.Error) as error:
2321
logger.warning("Bad certificate: %s", error)
2322
return
2323
logger.debug("Fingerprint: %s", fpr)
2324
2325
try:
2326
client = ProxyClient(child_pipe, key_id, fpr,
1546
2327
self.client_address)
1547
2328
except KeyError:
1548
2329
return
1549
1550
if self.server.use_dbus:
1551
# Emit D-Bus signal
1552
client.NewRequest(str(self.client_address))
1553
2330
1554
2331
if client.approval_delay:
1555
2332
delay = client.approval_delay
1556
2333
client.approvals_pending += 1
1557
2334
approval_required = True
1558
2335
1559
2336
while True:
1560
2337
if not client.enabled:
1561
2338
logger.info("Client %s is disabled",
1562
client.name)
2339
client.name)
1563
2340
if self.server.use_dbus:
1564
2341
# Emit D-Bus signal
1565
2342
client.Rejected("Disabled")
1566
2343
return
1567
2344
1568
2345
if client.approved or not client.approval_delay:
1569
#We are approved or approval is disabled
2346
# We are approved or approval is disabled
1570
2347
break
1571
2348
elif client.approved is None:
1572
2349
logger.info("Client %s needs approval",
1574
2351
if self.server.use_dbus:
1575
2352
# Emit D-Bus signal
1576
2353
client.NeedApproval(
1577
client.approval_delay_milliseconds(),
1578
client.approved_by_default)
2354
client.approval_delay.total_seconds()
2355
* 1000, client.approved_by_default)
1579
2356
else:
1580
2357
logger.warning("Client %s was not approved",
1581
2358
client.name)
1583
2360
# Emit D-Bus signal
1584
2361
client.Rejected("Denied")
1585
2362
return
1586
1587
#wait until timeout or approved
2363
2364
# wait until timeout or approved
1588
2365
time = datetime.datetime.now()
1589
2366
client.changedstate.acquire()
1590
(client.changedstate.wait
1591
(float(client.timedelta_to_milliseconds(delay)
1592
/ 1000)))
2367
client.changedstate.wait(delay.total_seconds())
1593
2368
client.changedstate.release()
1594
2369
time2 = datetime.datetime.now()
1595
2370
if (time2 - time) >= delay:
1605
2380
break
1606
2381
else:
1607
2382
delay -= time2 - time
1608
1609
sent_size = 0
1610
while sent_size < len(client.secret):
1611
try:
1612
sent = session.send(client.secret[sent_size:])
1613
except gnutls.errors.GNUTLSError as error:
1614
logger.warning("gnutls send failed")
1615
return
1616
logger.debug("Sent: %d, remaining: %d",
1617
sent, len(client.secret)
1618
- (sent_size + sent))
1619
sent_size += sent
1620
2383
2384
try:
2385
session.send(client.secret)
2386
except gnutls.Error as error:
2387
logger.warning("gnutls send failed",
2388
exc_info=error)
2389
return
2390
1621
2391
logger.info("Sending secret to %s", client.name)
1622
2392
# bump the timeout using extended_timeout
1623
client.checked_ok(client.extended_timeout)
2393
client.bump_timeout(client.extended_timeout)
1624
2394
if self.server.use_dbus:
1625
2395
# Emit D-Bus signal
1626
2396
client.GotSecret()
1627
2397
1628
2398
finally:
1629
2399
if approval_required:
1630
2400
client.approvals_pending -= 1
1631
2401
try:
1632
2402
session.bye()
1633
except gnutls.errors.GNUTLSError as error:
1634
logger.warning("GnuTLS bye failed")
1635
2403
except gnutls.Error as error:
2404
logger.warning("GnuTLS bye failed",
2405
exc_info=error)
2406
1636
2407
@staticmethod
1637
2408
def peer_certificate(session):
1638
"Return the peer's OpenPGP certificate as a bytestring"
1639
# If not an OpenPGP certificate...
1640
if (gnutls.library.functions
1641
.gnutls_certificate_type_get(session._c_object)
1642
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1643
# ...do the normal thing
1644
return session.peer_certificate
2409
"Return the peer's certificate as a bytestring"
2410
try:
2411
cert_type = gnutls.certificate_type_get2(session._c_object,
2412
gnutls.CTYPE_PEERS)
2413
except AttributeError:
2414
cert_type = gnutls.certificate_type_get(session._c_object)
2415
if gnutls.has_rawpk:
2416
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2417
else:
2418
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2419
# If not a valid certificate type...
2420
if cert_type not in valid_cert_types:
2421
logger.info("Cert type %r not in %r", cert_type,
2422
valid_cert_types)
2423
# ...return invalid data
2424
return b""
1645
2425
list_size = ctypes.c_uint(1)
1646
cert_list = (gnutls.library.functions
1647
.gnutls_certificate_get_peers
2426
cert_list = (gnutls.certificate_get_peers
1648
2427
(session._c_object, ctypes.byref(list_size)))
1649
2428
if not bool(cert_list) and list_size.value != 0:
1650
raise gnutls.errors.GNUTLSError("error getting peer"
1651
" certificate")
2429
raise gnutls.Error("error getting peer certificate")
1652
2430
if list_size.value == 0:
1653
2431
return None
1654
2432
cert = cert_list[0]
1655
2433
return ctypes.string_at(cert.data, cert.size)
1656
2434
2435
@staticmethod
2436
def key_id(certificate):
2437
"Convert a certificate bytestring to a hexdigit key ID"
2438
# New GnuTLS "datum" with the public key
2439
datum = gnutls.datum_t(
2440
ctypes.cast(ctypes.c_char_p(certificate),
2441
ctypes.POINTER(ctypes.c_ubyte)),
2442
ctypes.c_uint(len(certificate)))
2443
# XXX all these need to be created in the gnutls "module"
2444
# New empty GnuTLS certificate
2445
pubkey = gnutls.pubkey_t()
2446
gnutls.pubkey_init(ctypes.byref(pubkey))
2447
# Import the raw public key into the certificate
2448
gnutls.pubkey_import(pubkey,
2449
ctypes.byref(datum),
2450
gnutls.X509_FMT_DER)
2451
# New buffer for the key ID
2452
buf = ctypes.create_string_buffer(32)
2453
buf_len = ctypes.c_size_t(len(buf))
2454
# Get the key ID from the raw public key into the buffer
2455
gnutls.pubkey_get_key_id(pubkey,
2456
gnutls.KEYID_USE_SHA256,
2457
ctypes.cast(ctypes.byref(buf),
2458
ctypes.POINTER(ctypes.c_ubyte)),
2459
ctypes.byref(buf_len))
2460
# Deinit the certificate
2461
gnutls.pubkey_deinit(pubkey)
2462
2463
# Convert the buffer to a Python bytestring
2464
key_id = ctypes.string_at(buf, buf_len.value)
2465
# Convert the bytestring to hexadecimal notation
2466
hex_key_id = binascii.hexlify(key_id).upper()
2467
return hex_key_id
2468
1657
2469
@staticmethod
1658
2470
def fingerprint(openpgp):
1659
2471
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1660
2472
# New GnuTLS "datum" with the OpenPGP public key
1661
datum = (gnutls.library.types
1662
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1663
ctypes.POINTER
1664
(ctypes.c_ubyte)),
1665
ctypes.c_uint(len(openpgp))))
2473
datum = gnutls.datum_t(
2474
ctypes.cast(ctypes.c_char_p(openpgp),
2475
ctypes.POINTER(ctypes.c_ubyte)),
2476
ctypes.c_uint(len(openpgp)))
1666
2477
# New empty GnuTLS certificate
1667
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1668
(gnutls.library.functions
1669
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2478
crt = gnutls.openpgp_crt_t()
2479
gnutls.openpgp_crt_init(ctypes.byref(crt))
1670
2480
# Import the OpenPGP public key into the certificate
1671
(gnutls.library.functions
1672
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1673
gnutls.library.constants
1674
.GNUTLS_OPENPGP_FMT_RAW))
2481
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2482
gnutls.OPENPGP_FMT_RAW)
1675
2483
# Verify the self signature in the key
1676
2484
crtverify = ctypes.c_uint()
1677
(gnutls.library.functions
1678
.gnutls_openpgp_crt_verify_self(crt, 0,
1679
ctypes.byref(crtverify)))
2485
gnutls.openpgp_crt_verify_self(crt, 0,
2486
ctypes.byref(crtverify))
1680
2487
if crtverify.value != 0:
1681
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1682
raise (gnutls.errors.CertificateSecurityError
1683
("Verify failed"))
2488
gnutls.openpgp_crt_deinit(crt)
2489
raise gnutls.CertificateSecurityError(code
2490
=crtverify.value)
1684
2491
# New buffer for the fingerprint
1685
2492
buf = ctypes.create_string_buffer(20)
1686
2493
buf_len = ctypes.c_size_t()
1687
2494
# Get the fingerprint from the certificate into the buffer
1688
(gnutls.library.functions
1689
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1690
ctypes.byref(buf_len)))
2495
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2496
ctypes.byref(buf_len))
1691
2497
# Deinit the certificate
1692
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2498
gnutls.openpgp_crt_deinit(crt)
1693
2499
# Convert the buffer to a Python bytestring
1694
2500
fpr = ctypes.string_at(buf, buf_len.value)
1695
2501
# Convert the bytestring to hexadecimal notation
1697
2503
return hex_fpr
1698
2504
1699
2505
1700
class MultiprocessingMixIn(object):
2506
class MultiprocessingMixIn:
1701
2507
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2508
1702
2509
def sub_process_main(self, request, address):
1703
2510
try:
1704
2511
self.finish_request(request, address)
1705
2512
except Exception:
1706
2513
self.handle_error(request, address)
1707
2514
self.close_request(request)
1708
2515
1709
2516
def process_request(self, request, address):
1710
2517
"""Start a new process to process the request."""
1711
proc = multiprocessing.Process(target = self.sub_process_main,
1712
args = (request,
1713
address))
2518
proc = multiprocessing.Process(target=self.sub_process_main,
2519
args=(request, address))
1714
2520
proc.start()
1715
2521
return proc
1716
2522
1717
2523
1718
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2524
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1719
2525
""" adds a pipe to the MixIn """
2526
1720
2527
def process_request(self, request, client_address):
1721
2528
"""Overrides and wraps the original process_request().
1722
2529
1723
2530
This function creates a new pipe in self.pipe
1724
2531
"""
1725
2532
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1726
2533
1727
2534
proc = MultiprocessingMixIn.process_request(self, request,
1728
2535
client_address)
1729
2536
self.child_pipe.close()
1730
2537
self.add_pipe(parent_pipe, proc)
1731
2538
1732
2539
def add_pipe(self, parent_pipe, proc):
1733
2540
"""Dummy function; override as necessary"""
1734
raise NotImplementedError
2541
raise NotImplementedError()
1735
2542
1736
2543
1737
2544
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1738
socketserver.TCPServer, object):
2545
socketserver.TCPServer):
1739
2546
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1740
2547
1741
2548
Attributes:
1742
2549
enabled: Boolean; whether this server is activated yet
1743
2550
interface: None or a network interface name (string)
1744
2551
use_ipv6: Boolean; to use IPv6 or not
1745
2552
"""
2553
1746
2554
def __init__(self, server_address, RequestHandlerClass,
1747
interface=None, use_ipv6=True):
2555
interface=None,
2556
use_ipv6=True,
2557
socketfd=None):
2558
"""If socketfd is set, use that file descriptor instead of
2559
creating a new one with socket.socket().
2560
"""
1748
2561
self.interface = interface
1749
2562
if use_ipv6:
1750
2563
self.address_family = socket.AF_INET6
2564
if socketfd is not None:
2565
# Save the file descriptor
2566
self.socketfd = socketfd
2567
# Save the original socket.socket() function
2568
self.socket_socket = socket.socket
2569
2570
# To implement --socket, we monkey patch socket.socket.
2571
#
2572
# (When socketserver.TCPServer is a new-style class, we
2573
# could make self.socket into a property instead of monkey
2574
# patching socket.socket.)
2575
#
2576
# Create a one-time-only replacement for socket.socket()
2577
@functools.wraps(socket.socket)
2578
def socket_wrapper(*args, **kwargs):
2579
# Restore original function so subsequent calls are
2580
# not affected.
2581
socket.socket = self.socket_socket
2582
del self.socket_socket
2583
# This time only, return a new socket object from the
2584
# saved file descriptor.
2585
return socket.fromfd(self.socketfd, *args, **kwargs)
2586
# Replace socket.socket() function with wrapper
2587
socket.socket = socket_wrapper
2588
# The socketserver.TCPServer.__init__ will call
2589
# socket.socket(), which might be our replacement,
2590
# socket_wrapper(), if socketfd was set.
1751
2591
socketserver.TCPServer.__init__(self, server_address,
1752
2592
RequestHandlerClass)
2593
1753
2594
def server_bind(self):
1754
2595
"""This overrides the normal server_bind() function
1755
2596
to bind to an interface if one was specified, and also NOT to
1756
2597
bind to an address or port if they were not specified."""
2598
global SO_BINDTODEVICE
1757
2599
if self.interface is not None:
1758
2600
if SO_BINDTODEVICE is None:
1759
logger.error("SO_BINDTODEVICE does not exist;"
1760
" cannot bind to interface %s",
1761
self.interface)
1762
else:
1763
try:
1764
self.socket.setsockopt(socket.SOL_SOCKET,
1765
SO_BINDTODEVICE,
1766
str(self.interface
1767
+ '\0'))
1768
except socket.error as error:
1769
if error[0] == errno.EPERM:
1770
logger.error("No permission to"
1771
" bind to interface %s",
1772
self.interface)
1773
elif error[0] == errno.ENOPROTOOPT:
1774
logger.error("SO_BINDTODEVICE not available;"
1775
" cannot bind to interface %s",
1776
self.interface)
1777
else:
1778
raise
2601
# Fall back to a hard-coded value which seems to be
2602
# common enough.
2603
logger.warning("SO_BINDTODEVICE not found, trying 25")
2604
SO_BINDTODEVICE = 25
2605
try:
2606
self.socket.setsockopt(
2607
socket.SOL_SOCKET, SO_BINDTODEVICE,
2608
(self.interface + "\0").encode("utf-8"))
2609
except socket.error as error:
2610
if error.errno == errno.EPERM:
2611
logger.error("No permission to bind to"
2612
" interface %s", self.interface)
2613
elif error.errno == errno.ENOPROTOOPT:
2614
logger.error("SO_BINDTODEVICE not available;"
2615
" cannot bind to interface %s",
2616
self.interface)
2617
elif error.errno == errno.ENODEV:
2618
logger.error("Interface %s does not exist,"
2619
" cannot bind", self.interface)
2620
else:
2621
raise
1779
2622
# Only bind(2) the socket if we really need to.
1780
2623
if self.server_address[0] or self.server_address[1]:
2624
if self.server_address[1]:
2625
self.allow_reuse_address = True
1781
2626
if not self.server_address[0]:
1782
2627
if self.address_family == socket.AF_INET6:
1783
any_address = "::" # in6addr_any
2628
any_address = "::" # in6addr_any
1784
2629
else:
1785
any_address = socket.INADDR_ANY
2630
any_address = "0.0.0.0" # INADDR_ANY
1786
2631
self.server_address = (any_address,
1787
2632
self.server_address[1])
1788
2633
elif not self.server_address[1]:
1789
self.server_address = (self.server_address[0],
1790
0)
2634
self.server_address = (self.server_address[0], 0)
1791
2635
# if self.interface:
1792
2636
# self.server_address = (self.server_address[0],
1793
2637
# 0, # port
1799
2643
1800
2644
class MandosServer(IPv6_TCPServer):
1801
2645
"""Mandos server.
1802
2646
1803
2647
Attributes:
1804
2648
clients: set of Client objects
1805
2649
gnutls_priority GnuTLS priority string
1806
2650
use_dbus: Boolean; to emit D-Bus signals or not
1807
1808
Assumes a gobject.MainLoop event loop.
2651
2652
Assumes a GLib.MainLoop event loop.
1809
2653
"""
2654
1810
2655
def __init__(self, server_address, RequestHandlerClass,
1811
interface=None, use_ipv6=True, clients=None,
1812
gnutls_priority=None, use_dbus=True):
2656
interface=None,
2657
use_ipv6=True,
2658
clients=None,
2659
gnutls_priority=None,
2660
use_dbus=True,
2661
socketfd=None):
1813
2662
self.enabled = False
1814
2663
self.clients = clients
1815
2664
if self.clients is None:
1818
2667
self.gnutls_priority = gnutls_priority
1819
2668
IPv6_TCPServer.__init__(self, server_address,
1820
2669
RequestHandlerClass,
1821
interface = interface,
1822
use_ipv6 = use_ipv6)
2670
interface=interface,
2671
use_ipv6=use_ipv6,
2672
socketfd=socketfd)
2673
1823
2674
def server_activate(self):
1824
2675
if self.enabled:
1825
2676
return socketserver.TCPServer.server_activate(self)
1826
2677
1827
2678
def enable(self):
1828
2679
self.enabled = True
1829
2680
1830
2681
def add_pipe(self, parent_pipe, proc):
1831
2682
# Call "handle_ipc" for both data and EOF events
1832
gobject.io_add_watch(parent_pipe.fileno(),
1833
gobject.IO_IN | gobject.IO_HUP,
1834
functools.partial(self.handle_ipc,
1835
parent_pipe =
1836
parent_pipe,
1837
proc = proc))
1838
1839
def handle_ipc(self, source, condition, parent_pipe=None,
1840
proc = None, client_object=None):
1841
condition_names = {
1842
gobject.IO_IN: "IN", # There is data to read.
1843
gobject.IO_OUT: "OUT", # Data can be written (without
1844
# blocking).
1845
gobject.IO_PRI: "PRI", # There is urgent data to read.
1846
gobject.IO_ERR: "ERR", # Error condition.
1847
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1848
# broken, usually for pipes and
1849
# sockets).
1850
}
1851
conditions_string = ' | '.join(name
1852
for cond, name in
1853
condition_names.iteritems()
1854
if cond & condition)
2683
GLib.io_add_watch(
2684
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2685
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2686
functools.partial(self.handle_ipc,
2687
parent_pipe=parent_pipe,
2688
proc=proc))
2689
2690
def handle_ipc(self, source, condition,
2691
parent_pipe=None,
2692
proc=None,
2693
client_object=None):
1855
2694
# error, or the other end of multiprocessing.Pipe has closed
1856
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2695
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1857
2696
# Wait for other process to exit
1858
2697
proc.join()
1859
2698
return False
1860
2699
1861
2700
# Read a request from the child
1862
2701
request = parent_pipe.recv()
1863
2702
command = request[0]
1864
2703
1865
2704
if command == 'init':
1866
fpr = request[1]
1867
address = request[2]
1868
1869
for c in self.clients.itervalues():
1870
if c.fingerprint == fpr:
2705
key_id = request[1].decode("ascii")
2706
fpr = request[2].decode("ascii")
2707
address = request[3]
2708
2709
for c in self.clients.values():
2710
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2711
continue
2712
if key_id and c.key_id == key_id:
2713
client = c
2714
break
2715
if fpr and c.fingerprint == fpr:
1871
2716
client = c
1872
2717
break
1873
2718
else:
1874
logger.info("Client not found for fingerprint: %s, ad"
1875
"dress: %s", fpr, address)
2719
logger.info("Client not found for key ID: %s, address"
2720
": %s", key_id or fpr, address)
1876
2721
if self.use_dbus:
1877
2722
# Emit D-Bus signal
1878
mandos_dbus_service.ClientNotFound(fpr,
2723
mandos_dbus_service.ClientNotFound(key_id or fpr,
1879
2724
address[0])
1880
2725
parent_pipe.send(False)
1881
2726
return False
1882
1883
gobject.io_add_watch(parent_pipe.fileno(),
1884
gobject.IO_IN | gobject.IO_HUP,
1885
functools.partial(self.handle_ipc,
1886
parent_pipe =
1887
parent_pipe,
1888
proc = proc,
1889
client_object =
1890
client))
2727
2728
GLib.io_add_watch(
2729
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2730
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2731
functools.partial(self.handle_ipc,
2732
parent_pipe=parent_pipe,
2733
proc=proc,
2734
client_object=client))
1891
2735
parent_pipe.send(True)
1892
2736
# remove the old hook in favor of the new above hook on
1893
2737
# same fileno
1896
2740
funcname = request[1]
1897
2741
args = request[2]
1898
2742
kwargs = request[3]
1899
2743
1900
2744
parent_pipe.send(('data', getattr(client_object,
1901
2745
funcname)(*args,
1902
**kwargs)))
1903
2746
**kwargs)))
2747
1904
2748
if command == 'getattr':
1905
2749
attrname = request[1]
1906
if callable(client_object.__getattribute__(attrname)):
1907
parent_pipe.send(('function',))
2750
if isinstance(client_object.__getattribute__(attrname),
2751
collections.Callable):
2752
parent_pipe.send(('function', ))
1908
2753
else:
1909
parent_pipe.send(('data', client_object
1910
.__getattribute__(attrname)))
1911
2754
parent_pipe.send((
2755
'data', client_object.__getattribute__(attrname)))
2756
1912
2757
if command == 'setattr':
1913
2758
attrname = request[1]
1914
2759
value = request[2]
1915
2760
setattr(client_object, attrname, value)
1916
2761
1917
2762
return True
1918
2763
1919
2764
2765
def rfc3339_duration_to_delta(duration):
2766
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2767
2768
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2769
True
2770
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2771
True
2772
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2773
True
2774
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2775
True
2776
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2777
True
2778
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2779
True
2780
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2781
True
2782
"""
2783
2784
# Parsing an RFC 3339 duration with regular expressions is not
2785
# possible - there would have to be multiple places for the same
2786
# values, like seconds. The current code, while more esoteric, is
2787
# cleaner without depending on a parsing library. If Python had a
2788
# built-in library for parsing we would use it, but we'd like to
2789
# avoid excessive use of external libraries.
2790
2791
# New type for defining tokens, syntax, and semantics all-in-one
2792
Token = collections.namedtuple("Token", (
2793
"regexp", # To match token; if "value" is not None, must have
2794
# a "group" containing digits
2795
"value", # datetime.timedelta or None
2796
"followers")) # Tokens valid after this token
2797
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2798
# the "duration" ABNF definition in RFC 3339, Appendix A.
2799
token_end = Token(re.compile(r"$"), None, frozenset())
2800
token_second = Token(re.compile(r"(\d+)S"),
2801
datetime.timedelta(seconds=1),
2802
frozenset((token_end, )))
2803
token_minute = Token(re.compile(r"(\d+)M"),
2804
datetime.timedelta(minutes=1),
2805
frozenset((token_second, token_end)))
2806
token_hour = Token(re.compile(r"(\d+)H"),
2807
datetime.timedelta(hours=1),
2808
frozenset((token_minute, token_end)))
2809
token_time = Token(re.compile(r"T"),
2810
None,
2811
frozenset((token_hour, token_minute,
2812
token_second)))
2813
token_day = Token(re.compile(r"(\d+)D"),
2814
datetime.timedelta(days=1),
2815
frozenset((token_time, token_end)))
2816
token_month = Token(re.compile(r"(\d+)M"),
2817
datetime.timedelta(weeks=4),
2818
frozenset((token_day, token_end)))
2819
token_year = Token(re.compile(r"(\d+)Y"),
2820
datetime.timedelta(weeks=52),
2821
frozenset((token_month, token_end)))
2822
token_week = Token(re.compile(r"(\d+)W"),
2823
datetime.timedelta(weeks=1),
2824
frozenset((token_end, )))
2825
token_duration = Token(re.compile(r"P"), None,
2826
frozenset((token_year, token_month,
2827
token_day, token_time,
2828
token_week)))
2829
# Define starting values:
2830
# Value so far
2831
value = datetime.timedelta()
2832
found_token = None
2833
# Following valid tokens
2834
followers = frozenset((token_duration, ))
2835
# String left to parse
2836
s = duration
2837
# Loop until end token is found
2838
while found_token is not token_end:
2839
# Search for any currently valid tokens
2840
for token in followers:
2841
match = token.regexp.match(s)
2842
if match is not None:
2843
# Token found
2844
if token.value is not None:
2845
# Value found, parse digits
2846
factor = int(match.group(1), 10)
2847
# Add to value so far
2848
value += factor * token.value
2849
# Strip token from string
2850
s = token.regexp.sub("", s, 1)
2851
# Go to found token
2852
found_token = token
2853
# Set valid next tokens
2854
followers = found_token.followers
2855
break
2856
else:
2857
# No currently valid tokens were found
2858
raise ValueError("Invalid RFC 3339 duration: {!r}"
2859
.format(duration))
2860
# End token found
2861
return value
2862
2863
1920
2864
def string_to_delta(interval):
1921
2865
"""Parse a string and return a datetime.timedelta
1922
1923
>>> string_to_delta('7d')
1924
datetime.timedelta(7)
1925
>>> string_to_delta('60s')
1926
datetime.timedelta(0, 60)
1927
>>> string_to_delta('60m')
1928
datetime.timedelta(0, 3600)
1929
>>> string_to_delta('24h')
1930
datetime.timedelta(1)
1931
>>> string_to_delta('1w')
1932
datetime.timedelta(7)
1933
>>> string_to_delta('5m 30s')
1934
datetime.timedelta(0, 330)
2866
2867
>>> string_to_delta('7d') == datetime.timedelta(7)
2868
True
2869
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2870
True
2871
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2872
True
2873
>>> string_to_delta('24h') == datetime.timedelta(1)
2874
True
2875
>>> string_to_delta('1w') == datetime.timedelta(7)
2876
True
2877
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2878
True
1935
2879
"""
2880
2881
try:
2882
return rfc3339_duration_to_delta(interval)
2883
except ValueError:
2884
pass
2885
1936
2886
timevalue = datetime.timedelta(0)
1937
2887
for s in interval.split():
1938
2888
try:
1939
suffix = unicode(s[-1])
2889
suffix = s[-1]
1940
2890
value = int(s[:-1])
1941
2891
if suffix == "d":
1942
2892
delta = datetime.timedelta(value)
1949
2899
elif suffix == "w":
1950
2900
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1951
2901
else:
1952
raise ValueError("Unknown suffix %r" % suffix)
1953
except (ValueError, IndexError) as e:
2902
raise ValueError("Unknown suffix {!r}".format(suffix))
2903
except IndexError as e:
1954
2904
raise ValueError(*(e.args))
1955
2905
timevalue += delta
1956
2906
return timevalue
1957
2907
1958
2908
1959
def daemon(nochdir = False, noclose = False):
2909
def daemon(nochdir=False, noclose=False):
1960
2910
"""See daemon(3). Standard BSD Unix function.
1961
2911
1962
2912
This should really exist as os.daemon, but it doesn't (yet)."""
1963
2913
if os.fork():
1964
2914
sys.exit()
1969
2919
sys.exit()
1970
2920
if not noclose:
1971
2921
# Close all standard open file descriptors
1972
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2922
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1973
2923
if not stat.S_ISCHR(os.fstat(null).st_mode):
1974
2924
raise OSError(errno.ENODEV,
1975
"%s not a character device"
1976
% os.path.devnull)
2925
"{} not a character device"
2926
.format(os.devnull))
1977
2927
os.dup2(null, sys.stdin.fileno())
1978
2928
os.dup2(null, sys.stdout.fileno())
1979
2929
os.dup2(null, sys.stderr.fileno())
1982
2932
1983
2933
1984
2934
def main():
1985
2935
1986
2936
##################################################################
1987
2937
# Parsing of options, both command line and config file
1988
2938
1989
2939
parser = argparse.ArgumentParser()
1990
2940
parser.add_argument("-v", "--version", action="version",
1991
version = "%%(prog)s %s" % version,
2941
version="%(prog)s {}".format(version),
1992
2942
help="show version number and exit")
1993
2943
parser.add_argument("-i", "--interface", metavar="IF",
1994
2944
help="Bind to interface IF")
2000
2950
help="Run self-test")
2001
2951
parser.add_argument("--debug", action="store_true",
2002
2952
help="Debug mode; run in foreground and log"
2003
" to terminal")
2953
" to terminal", default=None)
2004
2954
parser.add_argument("--debuglevel", metavar="LEVEL",
2005
2955
help="Debug level for stdout output")
2006
2956
parser.add_argument("--priority", help="GnuTLS"
2013
2963
" files")
2014
2964
parser.add_argument("--no-dbus", action="store_false",
2015
2965
dest="use_dbus", help="Do not provide D-Bus"
2016
" system bus interface")
2966
" system bus interface", default=None)
2017
2967
parser.add_argument("--no-ipv6", action="store_false",
2018
dest="use_ipv6", help="Do not use IPv6")
2968
dest="use_ipv6", help="Do not use IPv6",
2969
default=None)
2019
2970
parser.add_argument("--no-restore", action="store_false",
2020
2971
dest="restore", help="Do not restore stored"
2021
" state")
2972
" state", default=None)
2973
parser.add_argument("--socket", type=int,
2974
help="Specify a file descriptor to a network"
2975
" socket to use instead of creating one")
2022
2976
parser.add_argument("--statedir", metavar="DIR",
2023
2977
help="Directory to save/restore state in")
2024
2978
parser.add_argument("--foreground", action="store_true",
2979
help="Run in foreground", default=None)
2980
parser.add_argument("--no-zeroconf", action="store_false",
2981
dest="zeroconf", help="Do not use Zeroconf",
2982
default=None)
2983
2025
2984
options = parser.parse_args()
2026
2027
if options.check:
2028
import doctest
2029
doctest.testmod()
2030
sys.exit()
2031
2985
2032
2986
# Default values for config file for server-global settings
2033
server_defaults = { "interface": "",
2034
"address": "",
2035
"port": "",
2036
"debug": "False",
2037
"priority":
2038
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2039
"servicename": "Mandos",
2040
"use_dbus": "True",
2041
"use_ipv6": "True",
2042
"debuglevel": "",
2043
"restore": "True",
2044
"statedir": "/var/lib/mandos"
2045
}
2046
2987
if gnutls.has_rawpk:
2988
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2989
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2990
else:
2991
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2992
":+SIGN-DSA-SHA256")
2993
server_defaults = {"interface": "",
2994
"address": "",
2995
"port": "",
2996
"debug": "False",
2997
"priority": priority,
2998
"servicename": "Mandos",
2999
"use_dbus": "True",
3000
"use_ipv6": "True",
3001
"debuglevel": "",
3002
"restore": "True",
3003
"socket": "",
3004
"statedir": "/var/lib/mandos",
3005
"foreground": "False",
3006
"zeroconf": "True",
3007
}
3008
del priority
3009
2047
3010
# Parse config file for server-global settings
2048
server_config = configparser.SafeConfigParser(server_defaults)
3011
server_config = configparser.ConfigParser(server_defaults)
2049
3012
del server_defaults
2050
server_config.read(os.path.join(options.configdir,
2051
"mandos.conf"))
2052
# Convert the SafeConfigParser object to a dict
3013
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3014
# Convert the ConfigParser object to a dict
2053
3015
server_settings = server_config.defaults()
2054
3016
# Use the appropriate methods on the non-string config options
2055
for option in ("debug", "use_dbus", "use_ipv6"):
3017
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3018
"foreground", "zeroconf"):
2056
3019
server_settings[option] = server_config.getboolean("DEFAULT",
2057
3020
option)
2058
3021
if server_settings["port"]:
2059
3022
server_settings["port"] = server_config.getint("DEFAULT",
2060
3023
"port")
3024
if server_settings["socket"]:
3025
server_settings["socket"] = server_config.getint("DEFAULT",
3026
"socket")
3027
# Later, stdin will, and stdout and stderr might, be dup'ed
3028
# over with an opened os.devnull. But we don't want this to
3029
# happen with a supplied network socket.
3030
if 0 <= server_settings["socket"] <= 2:
3031
server_settings["socket"] = os.dup(server_settings
3032
["socket"])
2061
3033
del server_config
2062
3034
2063
3035
# Override the settings from the config file with command line
2064
3036
# options, if set.
2065
3037
for option in ("interface", "address", "port", "debug",
2066
"priority", "servicename", "configdir",
2067
"use_dbus", "use_ipv6", "debuglevel", "restore",
2068
"statedir"):
3038
"priority", "servicename", "configdir", "use_dbus",
3039
"use_ipv6", "debuglevel", "restore", "statedir",
3040
"socket", "foreground", "zeroconf"):
2069
3041
value = getattr(options, option)
2070
3042
if value is not None:
2071
3043
server_settings[option] = value
2072
3044
del options
2073
3045
# Force all strings to be unicode
2074
3046
for option in server_settings.keys():
2075
if type(server_settings[option]) is str:
2076
server_settings[option] = unicode(server_settings[option])
3047
if isinstance(server_settings[option], bytes):
3048
server_settings[option] = (server_settings[option]
3049
.decode("utf-8"))
3050
# Force all boolean options to be boolean
3051
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3052
"foreground", "zeroconf"):
3053
server_settings[option] = bool(server_settings[option])
3054
# Debug implies foreground
3055
if server_settings["debug"]:
3056
server_settings["foreground"] = True
2077
3057
# Now we have our good server settings in "server_settings"
2078
3058
2079
3059
##################################################################
2080
3060
3061
if (not server_settings["zeroconf"]
3062
and not (server_settings["port"]
3063
or server_settings["socket"] != "")):
3064
parser.error("Needs port or socket to work without Zeroconf")
3065
2081
3066
# For convenience
2082
3067
debug = server_settings["debug"]
2083
3068
debuglevel = server_settings["debuglevel"]
2085
3070
use_ipv6 = server_settings["use_ipv6"]
2086
3071
stored_state_path = os.path.join(server_settings["statedir"],
2087
3072
stored_state_file)
2088
3073
foreground = server_settings["foreground"]
3074
zeroconf = server_settings["zeroconf"]
3075
2089
3076
if debug:
2090
3077
initlogger(debug, logging.DEBUG)
2091
3078
else:
2094
3081
else:
2095
3082
level = getattr(logging, debuglevel.upper())
2096
3083
initlogger(debug, level)
2097
3084
2098
3085
if server_settings["servicename"] != "Mandos":
2099
syslogger.setFormatter(logging.Formatter
2100
('Mandos (%s) [%%(process)d]:'
2101
' %%(levelname)s: %%(message)s'
2102
% server_settings["servicename"]))
2103
3086
syslogger.setFormatter(
3087
logging.Formatter('Mandos ({}) [%(process)d]:'
3088
' %(levelname)s: %(message)s'.format(
3089
server_settings["servicename"])))
3090
2104
3091
# Parse config file with clients
2105
client_config = configparser.SafeConfigParser(Client
2106
.client_defaults)
3092
client_config = configparser.ConfigParser(Client.client_defaults)
2107
3093
client_config.read(os.path.join(server_settings["configdir"],
2108
3094
"clients.conf"))
2109
3095
2110
3096
global mandos_dbus_service
2111
3097
mandos_dbus_service = None
2112
2113
tcp_server = MandosServer((server_settings["address"],
2114
server_settings["port"]),
2115
ClientHandler,
2116
interface=(server_settings["interface"]
2117
or None),
2118
use_ipv6=use_ipv6,
2119
gnutls_priority=
2120
server_settings["priority"],
2121
use_dbus=use_dbus)
2122
if not debug:
2123
pidfilename = "/var/run/mandos.pid"
2124
try:
2125
pidfile = open(pidfilename, "w")
2126
except IOError:
2127
logger.error("Could not open file %r", pidfilename)
2128
2129
try:
2130
uid = pwd.getpwnam("_mandos").pw_uid
2131
gid = pwd.getpwnam("_mandos").pw_gid
2132
except KeyError:
2133
try:
2134
uid = pwd.getpwnam("mandos").pw_uid
2135
gid = pwd.getpwnam("mandos").pw_gid
3098
3099
socketfd = None
3100
if server_settings["socket"] != "":
3101
socketfd = server_settings["socket"]
3102
tcp_server = MandosServer(
3103
(server_settings["address"], server_settings["port"]),
3104
ClientHandler,
3105
interface=(server_settings["interface"] or None),
3106
use_ipv6=use_ipv6,
3107
gnutls_priority=server_settings["priority"],
3108
use_dbus=use_dbus,
3109
socketfd=socketfd)
3110
if not foreground:
3111
pidfilename = "/run/mandos.pid"
3112
if not os.path.isdir("/run/."):
3113
pidfilename = "/var/run/mandos.pid"
3114
pidfile = None
3115
try:
3116
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3117
except IOError as e:
3118
logger.error("Could not open file %r", pidfilename,
3119
exc_info=e)
3120
3121
for name, group in (("_mandos", "_mandos"),
3122
("mandos", "mandos"),
3123
("nobody", "nogroup")):
3124
try:
3125
uid = pwd.getpwnam(name).pw_uid
3126
gid = pwd.getpwnam(group).pw_gid
3127
break
2136
3128
except KeyError:
2137
try:
2138
uid = pwd.getpwnam("nobody").pw_uid
2139
gid = pwd.getpwnam("nobody").pw_gid
2140
except KeyError:
2141
uid = 65534
2142
gid = 65534
3129
continue
3130
else:
3131
uid = 65534
3132
gid = 65534
2143
3133
try:
2144
3134
os.setgid(gid)
2145
3135
os.setuid(uid)
3136
if debug:
3137
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3138
gid))
2146
3139
except OSError as error:
2147
if error[0] != errno.EPERM:
2148
raise error
2149
3140
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3141
.format(uid, gid, os.strerror(error.errno)))
3142
if error.errno != errno.EPERM:
3143
raise
3144
2150
3145
if debug:
2151
3146
# Enable all possible GnuTLS debugging
2152
3147
2153
3148
# "Use a log level over 10 to enable all debugging options."
2154
3149
# - GnuTLS manual
2155
gnutls.library.functions.gnutls_global_set_log_level(11)
2156
2157
@gnutls.library.types.gnutls_log_func
3150
gnutls.global_set_log_level(11)
3151
3152
@gnutls.log_func
2158
3153
def debug_gnutls(level, string):
2159
3154
logger.debug("GnuTLS: %s", string[:-1])
2160
2161
(gnutls.library.functions
2162
.gnutls_global_set_log_function(debug_gnutls))
2163
3155
3156
gnutls.global_set_log_function(debug_gnutls)
3157
2164
3158
# Redirect stdin so all checkers get /dev/null
2165
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3159
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2166
3160
os.dup2(null, sys.stdin.fileno())
2167
3161
if null > 2:
2168
3162
os.close(null)
2169
3163
2170
3164
# Need to fork before connecting to D-Bus
2171
if not debug:
3165
if not foreground:
2172
3166
# Close all input and output, do double fork, etc.
2173
3167
daemon()
2174
2175
gobject.threads_init()
2176
3168
3169
if gi.version_info < (3, 10, 2):
3170
# multiprocessing will use threads, so before we use GLib we
3171
# need to inform GLib that threads will be used.
3172
GLib.threads_init()
3173
2177
3174
global main_loop
2178
3175
# From the Avahi example code
2179
DBusGMainLoop(set_as_default=True )
2180
main_loop = gobject.MainLoop()
3176
DBusGMainLoop(set_as_default=True)
3177
main_loop = GLib.MainLoop()
2181
3178
bus = dbus.SystemBus()
2182
3179
# End of Avahi example code
2183
3180
if use_dbus:
2184
3181
try:
2185
3182
bus_name = dbus.service.BusName("se.recompile.Mandos",
2186
bus, do_not_queue=True)
2187
old_bus_name = (dbus.service.BusName
2188
("se.bsnet.fukt.Mandos", bus,
2189
do_not_queue=True))
2190
except dbus.exceptions.NameExistsException as e:
2191
logger.error(unicode(e) + ", disabling D-Bus")
3183
bus,
3184
do_not_queue=True)
3185
old_bus_name = dbus.service.BusName(
3186
"se.bsnet.fukt.Mandos", bus,
3187
do_not_queue=True)
3188
except dbus.exceptions.DBusException as e:
3189
logger.error("Disabling D-Bus:", exc_info=e)
2192
3190
use_dbus = False
2193
3191
server_settings["use_dbus"] = False
2194
3192
tcp_server.use_dbus = False
2195
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2196
service = AvahiServiceToSyslog(name =
2197
server_settings["servicename"],
2198
servicetype = "_mandos._tcp",
2199
protocol = protocol, bus = bus)
2200
if server_settings["interface"]:
2201
service.interface = (if_nametoindex
2202
(str(server_settings["interface"])))
2203
3193
if zeroconf:
3194
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3195
service = AvahiServiceToSyslog(
3196
name=server_settings["servicename"],
3197
servicetype="_mandos._tcp",
3198
protocol=protocol,
3199
bus=bus)
3200
if server_settings["interface"]:
3201
service.interface = if_nametoindex(
3202
server_settings["interface"].encode("utf-8"))
3203
2204
3204
global multiprocessing_manager
2205
3205
multiprocessing_manager = multiprocessing.Manager()
2206
3206
2207
3207
client_class = Client
2208
3208
if use_dbus:
2209
client_class = functools.partial(ClientDBusTransitional,
2210
bus = bus)
2211
3209
client_class = functools.partial(ClientDBus, bus=bus)
3210
2212
3211
client_settings = Client.config_parser(client_config)
2213
3212
old_client_settings = {}
2214
3213
clients_data = {}
2215
3214
3215
# This is used to redirect stdout and stderr for checker processes
3216
global wnull
3217
wnull = open(os.devnull, "w") # A writable /dev/null
3218
# Only used if server is running in foreground but not in debug
3219
# mode
3220
if debug or not foreground:
3221
wnull.close()
3222
2216
3223
# Get client data and settings from last running state.
2217
3224
if server_settings["restore"]:
2218
3225
try:
2219
3226
with open(stored_state_path, "rb") as stored_state:
2220
clients_data, old_client_settings = (pickle.load
2221
(stored_state))
3227
if sys.version_info.major == 2:
3228
clients_data, old_client_settings = pickle.load(
3229
stored_state)
3230
else:
3231
bytes_clients_data, bytes_old_client_settings = (
3232
pickle.load(stored_state, encoding="bytes"))
3233
# Fix bytes to strings
3234
# clients_data
3235
# .keys()
3236
clients_data = {(key.decode("utf-8")
3237
if isinstance(key, bytes)
3238
else key): value
3239
for key, value in
3240
bytes_clients_data.items()}
3241
del bytes_clients_data
3242
for key in clients_data:
3243
value = {(k.decode("utf-8")
3244
if isinstance(k, bytes) else k): v
3245
for k, v in
3246
clients_data[key].items()}
3247
clients_data[key] = value
3248
# .client_structure
3249
value["client_structure"] = [
3250
(s.decode("utf-8")
3251
if isinstance(s, bytes)
3252
else s) for s in
3253
value["client_structure"]]
3254
# .name, .host, and .checker_command
3255
for k in ("name", "host", "checker_command"):
3256
if isinstance(value[k], bytes):
3257
value[k] = value[k].decode("utf-8")
3258
if "key_id" not in value:
3259
value["key_id"] = ""
3260
elif "fingerprint" not in value:
3261
value["fingerprint"] = ""
3262
# old_client_settings
3263
# .keys()
3264
old_client_settings = {
3265
(key.decode("utf-8")
3266
if isinstance(key, bytes)
3267
else key): value
3268
for key, value in
3269
bytes_old_client_settings.items()}
3270
del bytes_old_client_settings
3271
# .host and .checker_command
3272
for value in old_client_settings.values():
3273
for attribute in ("host", "checker_command"):
3274
if isinstance(value[attribute], bytes):
3275
value[attribute] = (value[attribute]
3276
.decode("utf-8"))
2222
3277
os.remove(stored_state_path)
2223
3278
except IOError as e:
2224
logger.warning("Could not load persistent state: {0}"
2225
.format(e))
2226
if e.errno != errno.ENOENT:
3279
if e.errno == errno.ENOENT:
3280
logger.warning("Could not load persistent state:"
3281
" {}".format(os.strerror(e.errno)))
3282
else:
3283
logger.critical("Could not load persistent state:",
3284
exc_info=e)
2227
3285
raise
2228
3286
except EOFError as e:
2229
3287
logger.warning("Could not load persistent state: "
2230
"EOFError: {0}".format(e))
2231
3288
"EOFError:",
3289
exc_info=e)
3290
2232
3291
with PGPEngine() as pgp:
2233
for client_name, client in clients_data.iteritems():
3292
for client_name, client in clients_data.items():
3293
# Skip removed clients
3294
if client_name not in client_settings:
3295
continue
3296
2234
3297
# Decide which value to use after restoring saved state.
2235
3298
# We have three different values: Old config file,
2236
3299
# new config file, and saved state.
2241
3304
# For each value in new config, check if it
2242
3305
# differs from the old config value (Except for
2243
3306
# the "secret" attribute)
2244
if (name != "secret" and
2245
value != old_client_settings[client_name]
2246
[name]):
3307
if (name != "secret"
3308
and (value !=
3309
old_client_settings[client_name][name])):
2247
3310
client[name] = value
2248
3311
except KeyError:
2249
3312
pass
2250
3313
2251
3314
# Clients who has passed its expire date can still be
2252
# enabled if its last checker was successful. Clients
2253
# whose checker failed before we stored its state is
2254
# assumed to have failed all checkers during downtime.
3315
# enabled if its last checker was successful. A Client
3316
# whose checker succeeded before we stored its state is
3317
# assumed to have successfully run all checkers during
3318
# downtime.
2255
3319
if client["enabled"]:
2256
3320
if datetime.datetime.utcnow() >= client["expires"]:
2257
3321
if not client["last_checked_ok"]:
2258
3322
logger.warning(
2259
"disabling client {0} - Client never "
2260
"performed a successfull checker"
2261
.format(client["name"]))
3323
"disabling client {} - Client never "
3324
"performed a successful checker".format(
3325
client_name))
2262
3326
client["enabled"] = False
2263
3327
elif client["last_checker_status"] != 0:
2264
3328
logger.warning(
2265
"disabling client {0} - Client "
2266
"last checker failed with error code {1}"
2267
.format(client["name"],
2268
client["last_checker_status"]))
3329
"disabling client {} - Client last"
3330
" checker failed with error code"
3331
" {}".format(
3332
client_name,
3333
client["last_checker_status"]))
2269
3334
client["enabled"] = False
2270
3335
else:
2271
client["expires"] = (datetime.datetime
2272
.utcnow()
2273
+ client["timeout"])
3336
client["expires"] = (
3337
datetime.datetime.utcnow()
3338
+ client["timeout"])
2274
3339
logger.debug("Last checker succeeded,"
2275
" keeping {0} enabled"
2276
.format(client["name"]))
3340
" keeping {} enabled".format(
3341
client_name))
2277
3342
try:
2278
client["secret"] = (
2279
pgp.decrypt(client["encrypted_secret"],
2280
client_settings[client_name]
2281
["secret"]))
3343
client["secret"] = pgp.decrypt(
3344
client["encrypted_secret"],
3345
client_settings[client_name]["secret"])
2282
3346
except PGPError:
2283
3347
# If decryption fails, we use secret from new settings
2284
logger.debug("Failed to decrypt {0} old secret"
2285
.format(client_name))
2286
client["secret"] = (
2287
client_settings[client_name]["secret"])
3348
logger.debug("Failed to decrypt {} old secret".format(
3349
client_name))
3350
client["secret"] = (client_settings[client_name]
3351
["secret"])
2288
3352
2289
2290
3353
# Add/remove clients based on new changes made to config
2291
3354
for client_name in (set(old_client_settings)
2292
3355
- set(client_settings)):
2295
3358
- set(old_client_settings)):
2296
3359
clients_data[client_name] = client_settings[client_name]
2297
3360
2298
# Create clients all clients
2299
for client_name, client in clients_data.iteritems():
3361
# Create all client objects
3362
for client_name, client in clients_data.items():
2300
3363
tcp_server.clients[client_name] = client_class(
2301
name = client_name, settings = client)
2302
3364
name=client_name,
3365
settings=client,
3366
server_settings=server_settings)
3367
2303
3368
if not tcp_server.clients:
2304
3369
logger.warning("No clients defined")
2305
2306
if not debug:
2307
try:
2308
with pidfile:
2309
pid = os.getpid()
2310
pidfile.write(str(pid) + "\n".encode("utf-8"))
2311
del pidfile
2312
except IOError:
2313
logger.error("Could not write to file %r with PID %d",
2314
pidfilename, pid)
2315
except NameError:
2316
# "pidfile" was never created
2317
pass
3370
3371
if not foreground:
3372
if pidfile is not None:
3373
pid = os.getpid()
3374
try:
3375
with pidfile:
3376
print(pid, file=pidfile)
3377
except IOError:
3378
logger.error("Could not write to file %r with PID %d",
3379
pidfilename, pid)
3380
del pidfile
2318
3381
del pidfilename
2319
signal.signal(signal.SIGINT, signal.SIG_IGN)
2320
2321
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2322
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2323
3382
3383
for termsig in (signal.SIGHUP, signal.SIGTERM):
3384
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3385
lambda: main_loop.quit() and False)
3386
2324
3387
if use_dbus:
2325
class MandosDBusService(dbus.service.Object):
3388
3389
@alternate_dbus_interfaces(
3390
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3391
class MandosDBusService(DBusObjectWithObjectManager):
2326
3392
"""A D-Bus proxy object"""
3393
2327
3394
def __init__(self):
2328
3395
dbus.service.Object.__init__(self, bus, "/")
3396
2329
3397
_interface = "se.recompile.Mandos"
2330
3398
2331
3399
@dbus.service.signal(_interface, signature="o")
2332
3400
def ClientAdded(self, objpath):
2333
3401
"D-Bus signal"
2334
3402
pass
2335
3403
2336
3404
@dbus.service.signal(_interface, signature="ss")
2337
def ClientNotFound(self, fingerprint, address):
3405
def ClientNotFound(self, key_id, address):
2338
3406
"D-Bus signal"
2339
3407
pass
2340
3408
3409
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3410
"true"})
2341
3411
@dbus.service.signal(_interface, signature="os")
2342
3412
def ClientRemoved(self, objpath, name):
2343
3413
"D-Bus signal"
2344
3414
pass
2345
3415
3416
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3417
"true"})
2346
3418
@dbus.service.method(_interface, out_signature="ao")
2347
3419
def GetAllClients(self):
2348
3420
"D-Bus method"
2349
return dbus.Array(c.dbus_object_path
2350
for c in
2351
tcp_server.clients.itervalues())
2352
3421
return dbus.Array(c.dbus_object_path for c in
3422
tcp_server.clients.values())
3423
3424
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3425
"true"})
2353
3426
@dbus.service.method(_interface,
2354
3427
out_signature="a{oa{sv}}")
2355
3428
def GetAllClientsWithProperties(self):
2356
3429
"D-Bus method"
2357
3430
return dbus.Dictionary(
2358
((c.dbus_object_path, c.GetAll(""))
2359
for c in tcp_server.clients.itervalues()),
3431
{c.dbus_object_path: c.GetAll(
3432
"se.recompile.Mandos.Client")
3433
for c in tcp_server.clients.values()},
2360
3434
signature="oa{sv}")
2361
3435
2362
3436
@dbus.service.method(_interface, in_signature="o")
2363
3437
def RemoveClient(self, object_path):
2364
3438
"D-Bus method"
2365
for c in tcp_server.clients.itervalues():
3439
for c in tcp_server.clients.values():
2366
3440
if c.dbus_object_path == object_path:
2367
3441
del tcp_server.clients[c.name]
2368
3442
c.remove_from_connection()
2369
# Don't signal anything except ClientRemoved
3443
# Don't signal the disabling
2370
3444
c.disable(quiet=True)
2371
# Emit D-Bus signal
2372
self.ClientRemoved(object_path, c.name)
3445
# Emit D-Bus signal for removal
3446
self.client_removed_signal(c)
2373
3447
return
2374
3448
raise KeyError(object_path)
2375
3449
2376
3450
del _interface
2377
2378
class MandosDBusServiceTransitional(MandosDBusService):
2379
__metaclass__ = AlternateDBusNamesMetaclass
2380
mandos_dbus_service = MandosDBusServiceTransitional()
2381
3451
3452
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3453
out_signature="a{oa{sa{sv}}}")
3454
def GetManagedObjects(self):
3455
"""D-Bus method"""
3456
return dbus.Dictionary(
3457
{client.dbus_object_path:
3458
dbus.Dictionary(
3459
{interface: client.GetAll(interface)
3460
for interface in
3461
client._get_all_interface_names()})
3462
for client in tcp_server.clients.values()})
3463
3464
def client_added_signal(self, client):
3465
"""Send the new standard signal and the old signal"""
3466
if use_dbus:
3467
# New standard signal
3468
self.InterfacesAdded(
3469
client.dbus_object_path,
3470
dbus.Dictionary(
3471
{interface: client.GetAll(interface)
3472
for interface in
3473
client._get_all_interface_names()}))
3474
# Old signal
3475
self.ClientAdded(client.dbus_object_path)
3476
3477
def client_removed_signal(self, client):
3478
"""Send the new standard signal and the old signal"""
3479
if use_dbus:
3480
# New standard signal
3481
self.InterfacesRemoved(
3482
client.dbus_object_path,
3483
client._get_all_interface_names())
3484
# Old signal
3485
self.ClientRemoved(client.dbus_object_path,
3486
client.name)
3487
3488
mandos_dbus_service = MandosDBusService()
3489
3490
# Save modules to variables to exempt the modules from being
3491
# unloaded before the function registered with atexit() is run.
3492
mp = multiprocessing
3493
wn = wnull
3494
2382
3495
def cleanup():
2383
3496
"Cleanup function; run on exit"
2384
service.cleanup()
2385
2386
multiprocessing.active_children()
3497
if zeroconf:
3498
service.cleanup()
3499
3500
mp.active_children()
3501
wn.close()
2387
3502
if not (tcp_server.clients or client_settings):
2388
3503
return
2389
3504
2390
3505
# Store client before exiting. Secrets are encrypted with key
2391
3506
# based on what config file has. If config file is
2392
3507
# removed/edited, old secret will thus be unrecovable.
2393
3508
clients = {}
2394
3509
with PGPEngine() as pgp:
2395
for client in tcp_server.clients.itervalues():
3510
for client in tcp_server.clients.values():
2396
3511
key = client_settings[client.name]["secret"]
2397
3512
client.encrypted_secret = pgp.encrypt(client.secret,
2398
3513
key)
2399
3514
client_dict = {}
2400
3515
2401
3516
# A list of attributes that can not be pickled
2402
3517
# + secret.
2403
exclude = set(("bus", "changedstate", "secret",
2404
"checker"))
2405
for name, typ in (inspect.getmembers
2406
(dbus.service.Object)):
3518
exclude = {"bus", "changedstate", "secret",
3519
"checker", "server_settings"}
3520
for name, typ in inspect.getmembers(dbus.service
3521
.Object):
2407
3522
exclude.add(name)
2408
3523
2409
3524
client_dict["encrypted_secret"] = (client
2410
3525
.encrypted_secret)
2411
3526
for attr in client.client_structure:
2412
3527
if attr not in exclude:
2413
3528
client_dict[attr] = getattr(client, attr)
2414
3529
2415
3530
clients[client.name] = client_dict
2416
3531
del client_settings[client.name]["secret"]
2417
3532
2418
3533
try:
2419
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2420
prefix="clients-",
2421
dir=os.path.dirname
2422
(stored_state_path))
2423
with os.fdopen(tempfd, "wb") as stored_state:
2424
pickle.dump((clients, client_settings), stored_state)
3534
with tempfile.NamedTemporaryFile(
3535
mode='wb',
3536
suffix=".pickle",
3537
prefix='clients-',
3538
dir=os.path.dirname(stored_state_path),
3539
delete=False) as stored_state:
3540
pickle.dump((clients, client_settings), stored_state,
3541
protocol=2)
3542
tempname = stored_state.name
2425
3543
os.rename(tempname, stored_state_path)
2426
3544
except (IOError, OSError) as e:
2427
logger.warning("Could not save persistent state: {0}"
2428
.format(e))
2429
3545
if not debug:
2430
3546
try:
2431
3547
os.remove(tempname)
2432
3548
except NameError:
2433
3549
pass
2434
if e.errno not in set((errno.ENOENT, errno.EACCES,
2435
errno.EEXIST)):
2436
raise e
2437
3550
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3551
logger.warning("Could not save persistent state: {}"
3552
.format(os.strerror(e.errno)))
3553
else:
3554
logger.warning("Could not save persistent state:",
3555
exc_info=e)
3556
raise
3557
2438
3558
# Delete all clients, and settings from config
2439
3559
while tcp_server.clients:
2440
3560
name, client = tcp_server.clients.popitem()
2441
3561
if use_dbus:
2442
3562
client.remove_from_connection()
2443
# Don't signal anything except ClientRemoved
3563
# Don't signal the disabling
2444
3564
client.disable(quiet=True)
3565
# Emit D-Bus signal for removal
2445
3566
if use_dbus:
2446
# Emit D-Bus signal
2447
mandos_dbus_service.ClientRemoved(client
2448
.dbus_object_path,
2449
client.name)
3567
mandos_dbus_service.client_removed_signal(client)
2450
3568
client_settings.clear()
2451
3569
2452
3570
atexit.register(cleanup)
2453
2454
for client in tcp_server.clients.itervalues():
3571
3572
for client in tcp_server.clients.values():
2455
3573
if use_dbus:
2456
# Emit D-Bus signal
2457
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3574
# Emit D-Bus signal for adding
3575
mandos_dbus_service.client_added_signal(client)
2458
3576
# Need to initiate checking of clients
2459
3577
if client.enabled:
2460
3578
client.init_checker()
2461
3579
2462
3580
tcp_server.enable()
2463
3581
tcp_server.server_activate()
2464
3582
2465
3583
# Find out what port we got
2466
service.port = tcp_server.socket.getsockname()[1]
3584
if zeroconf:
3585
service.port = tcp_server.socket.getsockname()[1]
2467
3586
if use_ipv6:
2468
3587
logger.info("Now listening on address %r, port %d,"
2469
" flowinfo %d, scope_id %d"
2470
% tcp_server.socket.getsockname())
3588
" flowinfo %d, scope_id %d",
3589
*tcp_server.socket.getsockname())
2471
3590
else: # IPv4
2472
logger.info("Now listening on address %r, port %d"
2473
% tcp_server.socket.getsockname())
2474
2475
#service.interface = tcp_server.socket.getsockname()[3]
2476
3591
logger.info("Now listening on address %r, port %d",
3592
*tcp_server.socket.getsockname())
3593
3594
# service.interface = tcp_server.socket.getsockname()[3]
3595
2477
3596
try:
2478
# From the Avahi example code
2479
try:
2480
service.activate()
2481
except dbus.exceptions.DBusException as error:
2482
logger.critical("DBusException: %s", error)
2483
cleanup()
2484
sys.exit(1)
2485
# End of Avahi example code
2486
2487
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2488
lambda *args, **kwargs:
2489
(tcp_server.handle_request
2490
(*args[2:], **kwargs) or True))
2491
3597
if zeroconf:
3598
# From the Avahi example code
3599
try:
3600
service.activate()
3601
except dbus.exceptions.DBusException as error:
3602
logger.critical("D-Bus Exception", exc_info=error)
3603
cleanup()
3604
sys.exit(1)
3605
# End of Avahi example code
3606
3607
GLib.io_add_watch(
3608
GLib.IOChannel.unix_new(tcp_server.fileno()),
3609
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3610
lambda *args, **kwargs: (tcp_server.handle_request
3611
(*args[2:], **kwargs) or True))
3612
2492
3613
logger.debug("Starting main loop")
2493
3614
main_loop.run()
2494
3615
except AvahiError as error:
2495
logger.critical("AvahiError: %s", error)
3616
logger.critical("Avahi Error", exc_info=error)
2496
3617
cleanup()
2497
3618
sys.exit(1)
2498
3619
except KeyboardInterrupt:
2503
3624
# Must run before the D-Bus bus name gets deregistered
2504
3625
cleanup()
2505
3626
3627
3628
def should_only_run_tests():
3629
parser = argparse.ArgumentParser(add_help=False)
3630
parser.add_argument("--check", action='store_true')
3631
args, unknown_args = parser.parse_known_args()
3632
run_tests = args.check
3633
if run_tests:
3634
# Remove --check argument from sys.argv
3635
sys.argv[1:] = unknown_args
3636
return run_tests
3637
3638
# Add all tests from doctest strings
3639
def load_tests(loader, tests, none):
3640
import doctest
3641
tests.addTests(doctest.DocTestSuite())
3642
return tests
3643
2506
3644
if __name__ == '__main__':
2507
main()
3645
try:
3646
if should_only_run_tests():
3647
# Call using ./mandos --check [--verbose]
3648
unittest.main()
3649
else:
3650
main()
3651
finally:
3652
logging.shutdown()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0