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- Committer: teddy at recompile
- Date: 2012-01-01 17:38:33 UTC
- Revision ID: teddy@recompile.se-20120101173833-ai39bif1w0ftuyyh
* Makefile (install-server): Add intro(8mandos) man page.
* network-hooks.d/bridge: Add copyright info and year.
* network-hooks.d/openvpn: - '' -
* network-hooks.d/wireless: - '' -
* network-hooks.d/bridge: Add copyright info and year.
* network-hooks.d/openvpn: - '' -
* network-hooks.d/wireless: - '' -
- files added:
- initramfs-tools-hook-conf
- files removed:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python3 -bI
2
# -*- mode: python; after-save-hook: (lambda () (let ((command (if (fboundp 'file-local-name) (file-local-name (buffer-file-name)) (or (file-remote-p (buffer-file-name) 'localname) (buffer-file-name))))) (if (= (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (format "%s --check" (shell-quote-argument command)) nil "*Test*")) 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w))) (progn (with-current-buffer "*Test*" (compilation-mode)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); coding: utf-8 -*-
3
#
1
#!/usr/bin/python
2
# -*- mode: python; coding: utf-8 -*-
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2020 Teddy Hogeborn
15
# Copyright © 2008-2020 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
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
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
28
#
26
#
29
27
# You should have received a copy of the GNU General Public License
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
32
31
# Contact the authors at <mandos@recompile.se>.
33
#
32
#
34
33
35
34
from __future__ import (division, absolute_import, print_function,
36
35
unicode_literals)
37
36
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
37
import SocketServer as socketserver
47
38
import socket
48
39
import argparse
49
40
import datetime
50
41
import errno
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
55
49
import sys
56
50
import re
57
51
import os
66
60
import struct
67
61
import fcntl
68
62
import functools
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
63
import cPickle as pickle
73
64
import multiprocessing
74
65
import types
75
66
import binascii
76
67
import tempfile
77
import itertools
78
import collections
79
import codecs
80
import unittest
81
import random
82
import shlex
83
68
84
69
import dbus
85
70
import dbus.service
86
import gi
87
from gi.repository import GLib
71
import gobject
72
import avahi
88
73
from dbus.mainloop.glib import DBusGMainLoop
89
74
import ctypes
90
75
import ctypes.util
91
76
import xml.dom.minidom
92
77
import inspect
93
94
if sys.version_info.major == 2:
95
__metaclass__ = type
96
str = unicode
97
98
# Add collections.abc.Callable if it does not exist
99
try:
100
collections.abc.Callable
101
except AttributeError:
102
class abc:
103
Callable = collections.Callable
104
collections.abc = abc
105
del abc
106
107
# Add shlex.quote if it does not exist
108
try:
109
shlex.quote
110
except AttributeError:
111
shlex.quote = re.escape
112
113
# Show warnings by default
114
if not sys.warnoptions:
115
import warnings
116
warnings.simplefilter("default")
117
118
# Try to find the value of SO_BINDTODEVICE:
119
try:
120
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
121
# newer, and it is also the most natural place for it:
78
import GnuPGInterface
79
80
try:
122
81
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
123
82
except AttributeError:
124
83
try:
125
# This is where SO_BINDTODEVICE was up to and including Python
126
# 2.6, and also 3.2:
127
84
from IN import SO_BINDTODEVICE
128
85
except ImportError:
129
# In Python 2.7 it seems to have been removed entirely.
130
# Try running the C preprocessor:
131
try:
132
cc = subprocess.Popen(["cc", "--language=c", "-E",
133
"/dev/stdin"],
134
stdin=subprocess.PIPE,
135
stdout=subprocess.PIPE)
136
stdout = cc.communicate(
137
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
138
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
139
except (OSError, ValueError, IndexError):
140
# No value found
141
SO_BINDTODEVICE = None
142
143
if sys.version_info < (3, 2):
144
configparser.Configparser = configparser.SafeConfigParser
145
146
version = "1.8.14"
86
SO_BINDTODEVICE = None
87
88
version = "1.5.0"
147
89
stored_state_file = "clients.pickle"
148
90
149
91
logger = logging.getLogger()
150
logging.captureWarnings(True) # Show warnings via the logging system
151
syslogger = None
92
syslogger = (logging.handlers.SysLogHandler
93
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
94
address = str("/dev/log")))
152
95
153
96
try:
154
if_nametoindex = ctypes.cdll.LoadLibrary(
155
ctypes.util.find_library("c")).if_nametoindex
97
if_nametoindex = (ctypes.cdll.LoadLibrary
98
(ctypes.util.find_library("c"))
99
.if_nametoindex)
156
100
except (OSError, AttributeError):
157
158
101
def if_nametoindex(interface):
159
102
"Get an interface index the hard way, i.e. using fcntl()"
160
103
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
161
104
with contextlib.closing(socket.socket()) as s:
162
105
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
163
struct.pack(b"16s16x", interface))
164
interface_index = struct.unpack("I", ifreq[16:20])[0]
106
struct.pack(str("16s16x"),
107
interface))
108
interface_index = struct.unpack(str("I"),
109
ifreq[16:20])[0]
165
110
return interface_index
166
111
167
112
168
def copy_function(func):
169
"""Make a copy of a function"""
170
if sys.version_info.major == 2:
171
return types.FunctionType(func.func_code,
172
func.func_globals,
173
func.func_name,
174
func.func_defaults,
175
func.func_closure)
176
else:
177
return types.FunctionType(func.__code__,
178
func.__globals__,
179
func.__name__,
180
func.__defaults__,
181
func.__closure__)
182
183
184
113
def initlogger(debug, level=logging.WARNING):
185
114
"""init logger and add loglevel"""
186
187
global syslogger
188
syslogger = (logging.handlers.SysLogHandler(
189
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
190
address="/dev/log"))
115
191
116
syslogger.setFormatter(logging.Formatter
192
117
('Mandos [%(process)d]: %(levelname)s:'
193
118
' %(message)s'))
194
119
logger.addHandler(syslogger)
195
120
196
121
if debug:
197
122
console = logging.StreamHandler()
198
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
208
133
pass
209
134
210
135
211
class PGPEngine:
136
class PGPEngine(object):
212
137
"""A simple class for OpenPGP symmetric encryption & decryption"""
213
214
138
def __init__(self):
139
self.gnupg = GnuPGInterface.GnuPG()
215
140
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
216
self.gpg = "gpg"
217
try:
218
output = subprocess.check_output(["gpgconf"])
219
for line in output.splitlines():
220
name, text, path = line.split(b":")
221
if name == b"gpg":
222
self.gpg = path
223
break
224
except OSError as e:
225
if e.errno != errno.ENOENT:
226
raise
227
self.gnupgargs = ['--batch',
228
'--homedir', self.tempdir,
229
'--force-mdc',
230
'--quiet']
231
# Only GPG version 1 has the --no-use-agent option.
232
if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
233
self.gnupgargs.append("--no-use-agent")
234
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
235
148
def __enter__(self):
236
149
return self
237
238
def __exit__(self, exc_type, exc_value, traceback):
150
151
def __exit__ (self, exc_type, exc_value, traceback):
239
152
self._cleanup()
240
153
return False
241
154
242
155
def __del__(self):
243
156
self._cleanup()
244
157
245
158
def _cleanup(self):
246
159
if self.tempdir is not None:
247
160
# Delete contents of tempdir
248
161
for root, dirs, files in os.walk(self.tempdir,
249
topdown=False):
162
topdown = False):
250
163
for filename in files:
251
164
os.remove(os.path.join(root, filename))
252
165
for dirname in dirs:
254
167
# Remove tempdir
255
168
os.rmdir(self.tempdir)
256
169
self.tempdir = None
257
170
258
171
def password_encode(self, password):
259
172
# Passphrase can not be empty and can not contain newlines or
260
173
# NUL bytes. So we prefix it and hex encode it.
261
encoded = b"mandos" + binascii.hexlify(password)
262
if len(encoded) > 2048:
263
# GnuPG can't handle long passwords, so encode differently
264
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
265
.replace(b"\n", b"\\n")
266
.replace(b"\0", b"\\x00"))
267
return encoded
268
174
return b"mandos" + binascii.hexlify(password)
175
269
176
def encrypt(self, data, password):
270
passphrase = self.password_encode(password)
271
with tempfile.NamedTemporaryFile(
272
dir=self.tempdir) as passfile:
273
passfile.write(passphrase)
274
passfile.flush()
275
proc = subprocess.Popen([self.gpg, '--symmetric',
276
'--passphrase-file',
277
passfile.name]
278
+ self.gnupgargs,
279
stdin=subprocess.PIPE,
280
stdout=subprocess.PIPE,
281
stderr=subprocess.PIPE)
282
ciphertext, err = proc.communicate(input=data)
283
if proc.returncode != 0:
284
raise PGPError(err)
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
285
191
return ciphertext
286
192
287
193
def decrypt(self, data, password):
288
passphrase = self.password_encode(password)
289
with tempfile.NamedTemporaryFile(
290
dir=self.tempdir) as passfile:
291
passfile.write(passphrase)
292
passfile.flush()
293
proc = subprocess.Popen([self.gpg, '--decrypt',
294
'--passphrase-file',
295
passfile.name]
296
+ self.gnupgargs,
297
stdin=subprocess.PIPE,
298
stdout=subprocess.PIPE,
299
stderr=subprocess.PIPE)
300
decrypted_plaintext, err = proc.communicate(input=data)
301
if proc.returncode != 0:
302
raise PGPError(err)
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
303
208
return decrypted_plaintext
304
209
305
210
306
# Pretend that we have an Avahi module
307
class avahi:
308
"""This isn't so much a class as it is a module-like namespace."""
309
IF_UNSPEC = -1 # avahi-common/address.h
310
PROTO_UNSPEC = -1 # avahi-common/address.h
311
PROTO_INET = 0 # avahi-common/address.h
312
PROTO_INET6 = 1 # avahi-common/address.h
313
DBUS_NAME = "org.freedesktop.Avahi"
314
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
315
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
316
DBUS_PATH_SERVER = "/"
317
318
@staticmethod
319
def string_array_to_txt_array(t):
320
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
321
for s in t), signature="ay")
322
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
323
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
324
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
325
SERVER_INVALID = 0 # avahi-common/defs.h
326
SERVER_REGISTERING = 1 # avahi-common/defs.h
327
SERVER_RUNNING = 2 # avahi-common/defs.h
328
SERVER_COLLISION = 3 # avahi-common/defs.h
329
SERVER_FAILURE = 4 # avahi-common/defs.h
330
331
211
332
212
class AvahiError(Exception):
333
213
def __init__(self, value, *args, **kwargs):
334
214
self.value = value
335
return super(AvahiError, self).__init__(value, *args,
336
**kwargs)
337
215
super(AvahiError, self).__init__(value, *args, **kwargs)
216
def __unicode__(self):
217
return unicode(repr(self.value))
338
218
339
219
class AvahiServiceError(AvahiError):
340
220
pass
341
221
342
343
222
class AvahiGroupError(AvahiError):
344
223
pass
345
224
346
225
347
class AvahiService:
226
class AvahiService(object):
348
227
"""An Avahi (Zeroconf) service.
349
228
350
229
Attributes:
351
230
interface: integer; avahi.IF_UNSPEC or an interface index.
352
231
Used to optionally bind to the specified interface.
353
232
name: string; Example: 'Mandos'
354
233
type: string; Example: '_mandos._tcp'.
355
See <https://www.iana.org/assignments/service-names-port-numbers>
234
See <http://www.dns-sd.org/ServiceTypes.html>
356
235
port: integer; what port to announce
357
236
TXT: list of strings; TXT record for the service
358
237
domain: string; Domain to publish on, default to .local if empty.
364
243
server: D-Bus Server
365
244
bus: dbus.SystemBus()
366
245
"""
367
368
def __init__(self,
369
interface=avahi.IF_UNSPEC,
370
name=None,
371
servicetype=None,
372
port=None,
373
TXT=None,
374
domain="",
375
host="",
376
max_renames=32768,
377
protocol=avahi.PROTO_UNSPEC,
378
bus=None):
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):
379
250
self.interface = interface
380
251
self.name = name
381
252
self.type = servicetype
390
261
self.server = None
391
262
self.bus = bus
392
263
self.entry_group_state_changed_match = None
393
394
def rename(self, remove=True):
264
def rename(self):
395
265
"""Derived from the Avahi example code"""
396
266
if self.rename_count >= self.max_renames:
397
267
logger.critical("No suitable Zeroconf service name found"
398
268
" after %i retries, exiting.",
399
269
self.rename_count)
400
270
raise AvahiServiceError("Too many renames")
401
self.name = str(
402
self.server.GetAlternativeServiceName(self.name))
403
self.rename_count += 1
271
self.name = unicode(self.server
272
.GetAlternativeServiceName(self.name))
404
273
logger.info("Changing Zeroconf service name to %r ...",
405
274
self.name)
406
if remove:
407
self.remove()
275
self.remove()
408
276
try:
409
277
self.add()
410
278
except dbus.exceptions.DBusException as error:
411
if (error.get_dbus_name()
412
== "org.freedesktop.Avahi.CollisionError"):
413
logger.info("Local Zeroconf service name collision.")
414
return self.rename(remove=False)
415
else:
416
logger.critical("D-Bus Exception", exc_info=error)
417
self.cleanup()
418
os._exit(1)
419
279
logger.critical("DBusException: %s", error)
280
self.cleanup()
281
os._exit(1)
282
self.rename_count += 1
420
283
def remove(self):
421
284
"""Derived from the Avahi example code"""
422
285
if self.entry_group_state_changed_match is not None:
424
287
self.entry_group_state_changed_match = None
425
288
if self.group is not None:
426
289
self.group.Reset()
427
428
290
def add(self):
429
291
"""Derived from the Avahi example code"""
430
292
self.remove()
447
309
dbus.UInt16(self.port),
448
310
avahi.string_array_to_txt_array(self.TXT))
449
311
self.group.Commit()
450
451
312
def entry_group_state_changed(self, state, error):
452
313
"""Derived from the Avahi example code"""
453
314
logger.debug("Avahi entry group state change: %i", state)
454
315
455
316
if state == avahi.ENTRY_GROUP_ESTABLISHED:
456
317
logger.debug("Zeroconf service established.")
457
318
elif state == avahi.ENTRY_GROUP_COLLISION:
459
320
self.rename()
460
321
elif state == avahi.ENTRY_GROUP_FAILURE:
461
322
logger.critical("Avahi: Error in group state changed %s",
462
str(error))
463
raise AvahiGroupError("State changed: {!s}".format(error))
464
323
unicode(error))
324
raise AvahiGroupError("State changed: %s"
325
% unicode(error))
465
326
def cleanup(self):
466
327
"""Derived from the Avahi example code"""
467
328
if self.group is not None:
472
333
pass
473
334
self.group = None
474
335
self.remove()
475
476
336
def server_state_changed(self, state, error=None):
477
337
"""Derived from the Avahi example code"""
478
338
logger.debug("Avahi server state change: %i", state)
479
bad_states = {
480
avahi.SERVER_INVALID: "Zeroconf server invalid",
481
avahi.SERVER_REGISTERING: None,
482
avahi.SERVER_COLLISION: "Zeroconf server name collision",
483
avahi.SERVER_FAILURE: "Zeroconf server failure",
484
}
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" }
485
346
if state in bad_states:
486
347
if bad_states[state] is not None:
487
348
if error is None:
490
351
logger.error(bad_states[state] + ": %r", error)
491
352
self.cleanup()
492
353
elif state == avahi.SERVER_RUNNING:
493
try:
494
self.add()
495
except dbus.exceptions.DBusException as error:
496
if (error.get_dbus_name()
497
== "org.freedesktop.Avahi.CollisionError"):
498
logger.info("Local Zeroconf service name"
499
" collision.")
500
return self.rename(remove=False)
501
else:
502
logger.critical("D-Bus Exception", exc_info=error)
503
self.cleanup()
504
os._exit(1)
354
self.add()
505
355
else:
506
356
if error is None:
507
357
logger.debug("Unknown state: %r", state)
508
358
else:
509
359
logger.debug("Unknown state: %r: %r", state, error)
510
511
360
def activate(self):
512
361
"""Derived from the Avahi example code"""
513
362
if self.server is None:
517
366
follow_name_owner_changes=True),
518
367
avahi.DBUS_INTERFACE_SERVER)
519
368
self.server.connect_to_signal("StateChanged",
520
self.server_state_changed)
369
self.server_state_changed)
521
370
self.server_state_changed(self.server.GetState())
522
371
523
524
372
class AvahiServiceToSyslog(AvahiService):
525
def rename(self, *args, **kwargs):
373
def rename(self):
526
374
"""Add the new name to the syslog messages"""
527
ret = super(AvahiServiceToSyslog, self).rename(*args,
528
**kwargs)
529
syslogger.setFormatter(logging.Formatter(
530
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
531
.format(self.name)))
375
ret = AvahiService.rename(self)
376
syslogger.setFormatter(logging.Formatter
377
('Mandos (%s) [%%(process)d]:'
378
' %%(levelname)s: %%(message)s'
379
% self.name))
532
380
return ret
533
381
534
535
# Pretend that we have a GnuTLS module
536
class gnutls:
537
"""This isn't so much a class as it is a module-like namespace."""
538
539
library = ctypes.util.find_library("gnutls")
540
if library is None:
541
library = ctypes.util.find_library("gnutls-deb0")
542
_library = ctypes.cdll.LoadLibrary(library)
543
del library
544
545
# Unless otherwise indicated, the constants and types below are
546
# all from the gnutls/gnutls.h C header file.
547
548
# Constants
549
E_SUCCESS = 0
550
E_INTERRUPTED = -52
551
E_AGAIN = -28
552
CRT_OPENPGP = 2
553
CRT_RAWPK = 3
554
CLIENT = 2
555
SHUT_RDWR = 0
556
CRD_CERTIFICATE = 1
557
E_NO_CERTIFICATE_FOUND = -49
558
X509_FMT_DER = 0
559
NO_TICKETS = 1<<10
560
ENABLE_RAWPK = 1<<18
561
CTYPE_PEERS = 3
562
KEYID_USE_SHA256 = 1 # gnutls/x509.h
563
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
564
565
# Types
566
class session_int(ctypes.Structure):
567
_fields_ = []
568
session_t = ctypes.POINTER(session_int)
569
570
class certificate_credentials_st(ctypes.Structure):
571
_fields_ = []
572
certificate_credentials_t = ctypes.POINTER(
573
certificate_credentials_st)
574
certificate_type_t = ctypes.c_int
575
576
class datum_t(ctypes.Structure):
577
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
578
('size', ctypes.c_uint)]
579
580
class openpgp_crt_int(ctypes.Structure):
581
_fields_ = []
582
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
583
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
584
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
585
credentials_type_t = ctypes.c_int
586
transport_ptr_t = ctypes.c_void_p
587
close_request_t = ctypes.c_int
588
589
# Exceptions
590
class Error(Exception):
591
def __init__(self, message=None, code=None, args=()):
592
# Default usage is by a message string, but if a return
593
# code is passed, convert it to a string with
594
# gnutls.strerror()
595
self.code = code
596
if message is None and code is not None:
597
message = gnutls.strerror(code)
598
return super(gnutls.Error, self).__init__(
599
message, *args)
600
601
class CertificateSecurityError(Error):
602
pass
603
604
# Classes
605
class Credentials:
606
def __init__(self):
607
self._c_object = gnutls.certificate_credentials_t()
608
gnutls.certificate_allocate_credentials(
609
ctypes.byref(self._c_object))
610
self.type = gnutls.CRD_CERTIFICATE
611
612
def __del__(self):
613
gnutls.certificate_free_credentials(self._c_object)
614
615
class ClientSession:
616
def __init__(self, socket, credentials=None):
617
self._c_object = gnutls.session_t()
618
gnutls_flags = gnutls.CLIENT
619
if gnutls.check_version(b"3.5.6"):
620
gnutls_flags |= gnutls.NO_TICKETS
621
if gnutls.has_rawpk:
622
gnutls_flags |= gnutls.ENABLE_RAWPK
623
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
624
del gnutls_flags
625
gnutls.set_default_priority(self._c_object)
626
gnutls.transport_set_ptr(self._c_object, socket.fileno())
627
gnutls.handshake_set_private_extensions(self._c_object,
628
True)
629
self.socket = socket
630
if credentials is None:
631
credentials = gnutls.Credentials()
632
gnutls.credentials_set(self._c_object, credentials.type,
633
ctypes.cast(credentials._c_object,
634
ctypes.c_void_p))
635
self.credentials = credentials
636
637
def __del__(self):
638
gnutls.deinit(self._c_object)
639
640
def handshake(self):
641
return gnutls.handshake(self._c_object)
642
643
def send(self, data):
644
data = bytes(data)
645
data_len = len(data)
646
while data_len > 0:
647
data_len -= gnutls.record_send(self._c_object,
648
data[-data_len:],
649
data_len)
650
651
def bye(self):
652
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
653
654
# Error handling functions
655
def _error_code(result):
656
"""A function to raise exceptions on errors, suitable
657
for the 'restype' attribute on ctypes functions"""
658
if result >= 0:
659
return result
660
if result == gnutls.E_NO_CERTIFICATE_FOUND:
661
raise gnutls.CertificateSecurityError(code=result)
662
raise gnutls.Error(code=result)
663
664
def _retry_on_error(result, func, arguments,
665
_error_code=_error_code):
666
"""A function to retry on some errors, suitable
667
for the 'errcheck' attribute on ctypes functions"""
668
while result < 0:
669
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
670
return _error_code(result)
671
result = func(*arguments)
672
return result
673
674
# Unless otherwise indicated, the function declarations below are
675
# all from the gnutls/gnutls.h C header file.
676
677
# Functions
678
priority_set_direct = _library.gnutls_priority_set_direct
679
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
680
ctypes.POINTER(ctypes.c_char_p)]
681
priority_set_direct.restype = _error_code
682
683
init = _library.gnutls_init
684
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
685
init.restype = _error_code
686
687
set_default_priority = _library.gnutls_set_default_priority
688
set_default_priority.argtypes = [session_t]
689
set_default_priority.restype = _error_code
690
691
record_send = _library.gnutls_record_send
692
record_send.argtypes = [session_t, ctypes.c_void_p,
693
ctypes.c_size_t]
694
record_send.restype = ctypes.c_ssize_t
695
record_send.errcheck = _retry_on_error
696
697
certificate_allocate_credentials = (
698
_library.gnutls_certificate_allocate_credentials)
699
certificate_allocate_credentials.argtypes = [
700
ctypes.POINTER(certificate_credentials_t)]
701
certificate_allocate_credentials.restype = _error_code
702
703
certificate_free_credentials = (
704
_library.gnutls_certificate_free_credentials)
705
certificate_free_credentials.argtypes = [
706
certificate_credentials_t]
707
certificate_free_credentials.restype = None
708
709
handshake_set_private_extensions = (
710
_library.gnutls_handshake_set_private_extensions)
711
handshake_set_private_extensions.argtypes = [session_t,
712
ctypes.c_int]
713
handshake_set_private_extensions.restype = None
714
715
credentials_set = _library.gnutls_credentials_set
716
credentials_set.argtypes = [session_t, credentials_type_t,
717
ctypes.c_void_p]
718
credentials_set.restype = _error_code
719
720
strerror = _library.gnutls_strerror
721
strerror.argtypes = [ctypes.c_int]
722
strerror.restype = ctypes.c_char_p
723
724
certificate_type_get = _library.gnutls_certificate_type_get
725
certificate_type_get.argtypes = [session_t]
726
certificate_type_get.restype = _error_code
727
728
certificate_get_peers = _library.gnutls_certificate_get_peers
729
certificate_get_peers.argtypes = [session_t,
730
ctypes.POINTER(ctypes.c_uint)]
731
certificate_get_peers.restype = ctypes.POINTER(datum_t)
732
733
global_set_log_level = _library.gnutls_global_set_log_level
734
global_set_log_level.argtypes = [ctypes.c_int]
735
global_set_log_level.restype = None
736
737
global_set_log_function = _library.gnutls_global_set_log_function
738
global_set_log_function.argtypes = [log_func]
739
global_set_log_function.restype = None
740
741
deinit = _library.gnutls_deinit
742
deinit.argtypes = [session_t]
743
deinit.restype = None
744
745
handshake = _library.gnutls_handshake
746
handshake.argtypes = [session_t]
747
handshake.restype = _error_code
748
handshake.errcheck = _retry_on_error
749
750
transport_set_ptr = _library.gnutls_transport_set_ptr
751
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
752
transport_set_ptr.restype = None
753
754
bye = _library.gnutls_bye
755
bye.argtypes = [session_t, close_request_t]
756
bye.restype = _error_code
757
bye.errcheck = _retry_on_error
758
759
check_version = _library.gnutls_check_version
760
check_version.argtypes = [ctypes.c_char_p]
761
check_version.restype = ctypes.c_char_p
762
763
_need_version = b"3.3.0"
764
if check_version(_need_version) is None:
765
raise self.Error("Needs GnuTLS {} or later"
766
.format(_need_version))
767
768
_tls_rawpk_version = b"3.6.6"
769
has_rawpk = bool(check_version(_tls_rawpk_version))
770
771
if has_rawpk:
772
# Types
773
class pubkey_st(ctypes.Structure):
774
_fields = []
775
pubkey_t = ctypes.POINTER(pubkey_st)
776
777
x509_crt_fmt_t = ctypes.c_int
778
779
# All the function declarations below are from
780
# gnutls/abstract.h
781
pubkey_init = _library.gnutls_pubkey_init
782
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
783
pubkey_init.restype = _error_code
784
785
pubkey_import = _library.gnutls_pubkey_import
786
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
787
x509_crt_fmt_t]
788
pubkey_import.restype = _error_code
789
790
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
791
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
792
ctypes.POINTER(ctypes.c_ubyte),
793
ctypes.POINTER(ctypes.c_size_t)]
794
pubkey_get_key_id.restype = _error_code
795
796
pubkey_deinit = _library.gnutls_pubkey_deinit
797
pubkey_deinit.argtypes = [pubkey_t]
798
pubkey_deinit.restype = None
799
else:
800
# All the function declarations below are from
801
# gnutls/openpgp.h
802
803
openpgp_crt_init = _library.gnutls_openpgp_crt_init
804
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
805
openpgp_crt_init.restype = _error_code
806
807
openpgp_crt_import = _library.gnutls_openpgp_crt_import
808
openpgp_crt_import.argtypes = [openpgp_crt_t,
809
ctypes.POINTER(datum_t),
810
openpgp_crt_fmt_t]
811
openpgp_crt_import.restype = _error_code
812
813
openpgp_crt_verify_self = \
814
_library.gnutls_openpgp_crt_verify_self
815
openpgp_crt_verify_self.argtypes = [
816
openpgp_crt_t,
817
ctypes.c_uint,
818
ctypes.POINTER(ctypes.c_uint),
819
]
820
openpgp_crt_verify_self.restype = _error_code
821
822
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
823
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
824
openpgp_crt_deinit.restype = None
825
826
openpgp_crt_get_fingerprint = (
827
_library.gnutls_openpgp_crt_get_fingerprint)
828
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
829
ctypes.c_void_p,
830
ctypes.POINTER(
831
ctypes.c_size_t)]
832
openpgp_crt_get_fingerprint.restype = _error_code
833
834
if check_version(b"3.6.4"):
835
certificate_type_get2 = _library.gnutls_certificate_type_get2
836
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
837
certificate_type_get2.restype = _error_code
838
839
# Remove non-public functions
840
del _error_code, _retry_on_error
841
842
843
def call_pipe(connection, # : multiprocessing.Connection
844
func, *args, **kwargs):
845
"""This function is meant to be called by multiprocessing.Process
846
847
This function runs func(*args, **kwargs), and writes the resulting
848
return value on the provided multiprocessing.Connection.
849
"""
850
connection.send(func(*args, **kwargs))
851
connection.close()
852
853
854
class Client:
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):
855
389
"""A representation of a client host served by this server.
856
390
857
391
Attributes:
858
392
approved: bool(); 'None' if not yet approved/disapproved
859
393
approval_delay: datetime.timedelta(); Time to wait for approval
860
394
approval_duration: datetime.timedelta(); Duration of one approval
861
checker: multiprocessing.Process(); a running checker process used
862
to see if the client lives. 'None' if no process is
863
running.
864
checker_callback_tag: a GLib event source tag, or None
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
865
399
checker_command: string; External command which is run to check
866
400
if client lives. %() expansions are done at
867
401
runtime with vars(self) as dict, so that for
868
402
instance %(name)s can be used in the command.
869
checker_initiator_tag: a GLib event source tag, or None
403
checker_initiator_tag: a gobject event source tag, or None
870
404
created: datetime.datetime(); (UTC) object creation
871
405
client_structure: Object describing what attributes a client has
872
406
and is used for storing the client at exit
873
407
current_checker_command: string; current running checker_command
874
disable_initiator_tag: a GLib event source tag, or None
408
disable_initiator_tag: a gobject event source tag, or None
875
409
enabled: bool()
876
410
fingerprint: string (40 or 32 hexadecimal digits); used to
877
uniquely identify an OpenPGP client
878
key_id: string (64 hexadecimal digits); used to uniquely identify
879
a client using raw public keys
411
uniquely identify the client
880
412
host: string; available for use by the checker command
881
413
interval: datetime.timedelta(); How often to start a new checker
882
414
last_approval_request: datetime.datetime(); (UTC) or None
883
415
last_checked_ok: datetime.datetime(); (UTC) or None
884
416
last_checker_status: integer between 0 and 255 reflecting exit
885
417
status of last checker. -1 reflects crashed
886
checker, -2 means no checker completed yet.
887
last_checker_signal: The signal which killed the last checker, if
888
last_checker_status is -1
418
checker, or None.
889
419
last_enabled: datetime.datetime(); (UTC) or None
890
420
name: string; from the config file, used in log messages and
891
421
D-Bus identifiers
892
422
secret: bytestring; sent verbatim (over TLS) to client
893
423
timeout: datetime.timedelta(); How long from last_checked_ok
894
424
until this client is disabled
895
extended_timeout: extra long timeout when secret has been sent
425
extended_timeout: extra long timeout when password has been sent
896
426
runtime_expansions: Allowed attributes for runtime expansion.
897
427
expires: datetime.datetime(); time (UTC) when a client will be
898
428
disabled, or None
899
server_settings: The server_settings dict from main()
900
429
"""
901
430
902
431
runtime_expansions = ("approval_delay", "approval_duration",
903
"created", "enabled", "expires", "key_id",
904
"fingerprint", "host", "interval",
905
"last_approval_request", "last_checked_ok",
432
"created", "enabled", "fingerprint",
433
"host", "interval", "last_checked_ok",
906
434
"last_enabled", "name", "timeout")
907
client_defaults = {
908
"timeout": "PT5M",
909
"extended_timeout": "PT15M",
910
"interval": "PT2M",
911
"checker": "fping -q -- %%(host)s",
912
"host": "",
913
"approval_delay": "PT0S",
914
"approval_duration": "PT1S",
915
"approved_by_default": "True",
916
"enabled": "True",
917
}
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)
918
460
919
461
@staticmethod
920
462
def config_parser(config):
928
470
for client_name in config.sections():
929
471
section = dict(config.items(client_name))
930
472
client = settings[client_name] = {}
931
473
932
474
client["host"] = section["host"]
933
475
# Reformat values from string types to Python types
934
476
client["approved_by_default"] = config.getboolean(
935
477
client_name, "approved_by_default")
936
478
client["enabled"] = config.getboolean(client_name,
937
479
"enabled")
938
939
# Uppercase and remove spaces from key_id and fingerprint
940
# for later comparison purposes with return value from the
941
# key_id() and fingerprint() functions
942
client["key_id"] = (section.get("key_id", "").upper()
943
.replace(" ", ""))
480
944
481
client["fingerprint"] = (section["fingerprint"].upper()
945
482
.replace(" ", ""))
946
483
if "secret" in section:
947
client["secret"] = codecs.decode(section["secret"]
948
.encode("utf-8"),
949
"base64")
484
client["secret"] = section["secret"].decode("base64")
950
485
elif "secfile" in section:
951
486
with open(os.path.expanduser(os.path.expandvars
952
487
(section["secfile"])),
953
488
"rb") as secfile:
954
489
client["secret"] = secfile.read()
955
490
else:
956
raise TypeError("No secret or secfile for section {}"
957
.format(section))
491
raise TypeError("No secret or secfile for section %s"
492
% section)
958
493
client["timeout"] = string_to_delta(section["timeout"])
959
494
client["extended_timeout"] = string_to_delta(
960
495
section["extended_timeout"])
966
501
client["checker_command"] = section["checker"]
967
502
client["last_approval_request"] = None
968
503
client["last_checked_ok"] = None
969
client["last_checker_status"] = -2
970
504
client["last_checker_status"] = None
505
971
506
return settings
972
973
def __init__(self, settings, name=None, server_settings=None):
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."""
974
513
self.name = name
975
if server_settings is None:
976
server_settings = {}
977
self.server_settings = server_settings
978
514
# adding all client settings
979
for setting, value in settings.items():
515
for setting, value in settings.iteritems():
980
516
setattr(self, setting, value)
981
517
982
518
if self.enabled:
983
519
if not hasattr(self, "last_enabled"):
984
520
self.last_enabled = datetime.datetime.utcnow()
988
524
else:
989
525
self.last_enabled = None
990
526
self.expires = None
991
527
992
528
logger.debug("Creating client %r", self.name)
993
logger.debug(" Key ID: %s", self.key_id)
529
# Uppercase and remove spaces from fingerprint for later
530
# comparison purposes with return value from the fingerprint()
531
# function
994
532
logger.debug(" Fingerprint: %s", self.fingerprint)
995
533
self.created = settings.get("created",
996
534
datetime.datetime.utcnow())
1003
541
self.current_checker_command = None
1004
542
self.approved = None
1005
543
self.approvals_pending = 0
1006
self.changedstate = multiprocessing_manager.Condition(
1007
multiprocessing_manager.Lock())
1008
self.client_structure = [attr
1009
for attr in self.__dict__.keys()
544
self.changedstate = (multiprocessing_manager
545
.Condition(multiprocessing_manager
546
.Lock()))
547
self.client_structure = [attr for attr in
548
self.__dict__.iterkeys()
1010
549
if not attr.startswith("_")]
1011
550
self.client_structure.append("client_structure")
1012
1013
for name, t in inspect.getmembers(
1014
type(self), lambda obj: isinstance(obj, property)):
551
552
for name, t in inspect.getmembers(type(self),
553
lambda obj:
554
isinstance(obj,
555
property)):
1015
556
if not name.startswith("_"):
1016
557
self.client_structure.append(name)
1017
558
1018
559
# Send notice to process children that client state has changed
1019
560
def send_changedstate(self):
1020
561
with self.changedstate:
1021
562
self.changedstate.notify_all()
1022
563
1023
564
def enable(self):
1024
565
"""Start this client's checker and timeout hooks"""
1025
566
if getattr(self, "enabled", False):
1026
567
# Already enabled
1027
568
return
569
self.send_changedstate()
1028
570
self.expires = datetime.datetime.utcnow() + self.timeout
1029
571
self.enabled = True
1030
572
self.last_enabled = datetime.datetime.utcnow()
1031
573
self.init_checker()
1032
self.send_changedstate()
1033
574
1034
575
def disable(self, quiet=True):
1035
576
"""Disable this client."""
1036
577
if not getattr(self, "enabled", False):
1037
578
return False
1038
579
if not quiet:
580
self.send_changedstate()
581
if not quiet:
1039
582
logger.info("Disabling client %s", self.name)
1040
if getattr(self, "disable_initiator_tag", None) is not None:
1041
GLib.source_remove(self.disable_initiator_tag)
583
if getattr(self, "disable_initiator_tag", False):
584
gobject.source_remove(self.disable_initiator_tag)
1042
585
self.disable_initiator_tag = None
1043
586
self.expires = None
1044
if getattr(self, "checker_initiator_tag", None) is not None:
1045
GLib.source_remove(self.checker_initiator_tag)
587
if getattr(self, "checker_initiator_tag", False):
588
gobject.source_remove(self.checker_initiator_tag)
1046
589
self.checker_initiator_tag = None
1047
590
self.stop_checker()
1048
591
self.enabled = False
1049
if not quiet:
1050
self.send_changedstate()
1051
# Do not run this again if called by a GLib.timeout_add
592
# Do not run this again if called by a gobject.timeout_add
1052
593
return False
1053
594
1054
595
def __del__(self):
1055
596
self.disable()
1056
597
1057
598
def init_checker(self):
1058
599
# Schedule a new checker to be started an 'interval' from now,
1059
600
# and every interval from then on.
1060
if self.checker_initiator_tag is not None:
1061
GLib.source_remove(self.checker_initiator_tag)
1062
self.checker_initiator_tag = GLib.timeout_add(
1063
random.randrange(int(self.interval.total_seconds() * 1000
1064
+ 1)),
1065
self.start_checker)
601
self.checker_initiator_tag = (gobject.timeout_add
602
(self.interval_milliseconds(),
603
self.start_checker))
1066
604
# Schedule a disable() when 'timeout' has passed
1067
if self.disable_initiator_tag is not None:
1068
GLib.source_remove(self.disable_initiator_tag)
1069
self.disable_initiator_tag = GLib.timeout_add(
1070
int(self.timeout.total_seconds() * 1000), self.disable)
605
self.disable_initiator_tag = (gobject.timeout_add
606
(self.timeout_milliseconds(),
607
self.disable))
1071
608
# Also start a new checker *right now*.
1072
609
self.start_checker()
1073
1074
def checker_callback(self, source, condition, connection,
1075
command):
610
611
def checker_callback(self, pid, condition, command):
1076
612
"""The checker has completed, so take appropriate actions."""
1077
# Read return code from connection (see call_pipe)
1078
returncode = connection.recv()
1079
connection.close()
1080
if self.checker is not None:
1081
self.checker.join()
1082
613
self.checker_callback_tag = None
1083
614
self.checker = None
1084
1085
if returncode >= 0:
1086
self.last_checker_status = returncode
1087
self.last_checker_signal = None
615
if os.WIFEXITED(condition):
616
self.last_checker_status = os.WEXITSTATUS(condition)
1088
617
if self.last_checker_status == 0:
1089
618
logger.info("Checker for %(name)s succeeded",
1090
619
vars(self))
1091
620
self.checked_ok()
1092
621
else:
1093
logger.info("Checker for %(name)s failed", vars(self))
622
logger.info("Checker for %(name)s failed",
623
vars(self))
1094
624
else:
1095
625
self.last_checker_status = -1
1096
self.last_checker_signal = -returncode
1097
626
logger.warning("Checker for %(name)s crashed?",
1098
627
vars(self))
1099
return False
1100
1101
def checked_ok(self):
1102
"""Assert that the client has been seen, alive and well."""
1103
self.last_checked_ok = datetime.datetime.utcnow()
1104
self.last_checker_status = 0
1105
self.last_checker_signal = None
1106
self.bump_timeout()
1107
1108
def bump_timeout(self, timeout=None):
1109
"""Bump up the timeout for this client."""
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
"""
1110
635
if timeout is None:
1111
636
timeout = self.timeout
637
self.last_checked_ok = datetime.datetime.utcnow()
1112
638
if self.disable_initiator_tag is not None:
1113
GLib.source_remove(self.disable_initiator_tag)
1114
self.disable_initiator_tag = None
639
gobject.source_remove(self.disable_initiator_tag)
1115
640
if getattr(self, "enabled", False):
1116
self.disable_initiator_tag = GLib.timeout_add(
1117
int(timeout.total_seconds() * 1000), self.disable)
641
self.disable_initiator_tag = (gobject.timeout_add
642
(timedelta_to_milliseconds
643
(timeout), self.disable))
1118
644
self.expires = datetime.datetime.utcnow() + timeout
1119
645
1120
646
def need_approval(self):
1121
647
self.last_approval_request = datetime.datetime.utcnow()
1122
648
1123
649
def start_checker(self):
1124
650
"""Start a new checker subprocess if one is not running.
1125
651
1126
652
If a checker already exists, leave it running and do
1127
653
nothing."""
1128
654
# The reason for not killing a running checker is that if we
1129
# did that, and if a checker (for some reason) started running
1130
# slowly and taking more than 'interval' time, then the client
1131
# would inevitably timeout, since no checker would get a
1132
# chance to run to completion. If we instead leave running
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
1133
659
# checkers alone, the checker would have to take more time
1134
660
# than 'timeout' for the client to be disabled, which is as it
1135
661
# should be.
1136
1137
if self.checker is not None and not self.checker.is_alive():
1138
logger.warning("Checker was not alive; joining")
1139
self.checker.join()
1140
self.checker = None
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)
1141
676
# Start a new checker if needed
1142
677
if self.checker is None:
1143
# Escape attributes for the shell
1144
escaped_attrs = {
1145
attr: shlex.quote(str(getattr(self, attr)))
1146
for attr in self.runtime_expansions}
1147
678
try:
1148
command = self.checker_command % escaped_attrs
1149
except TypeError as error:
1150
logger.error('Could not format string "%s"',
1151
self.checker_command,
1152
exc_info=error)
1153
return True # Try again later
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
1154
697
self.current_checker_command = command
1155
logger.info("Starting checker %r for %s", command,
1156
self.name)
1157
# We don't need to redirect stdout and stderr, since
1158
# in normal mode, that is already done by daemon(),
1159
# and in debug mode we don't want to. (Stdin is
1160
# always replaced by /dev/null.)
1161
# The exception is when not debugging but nevertheless
1162
# running in the foreground; use the previously
1163
# created wnull.
1164
popen_args = {"close_fds": True,
1165
"shell": True,
1166
"cwd": "/"}
1167
if (not self.server_settings["debug"]
1168
and self.server_settings["foreground"]):
1169
popen_args.update({"stdout": wnull,
1170
"stderr": wnull})
1171
pipe = multiprocessing.Pipe(duplex=False)
1172
self.checker = multiprocessing.Process(
1173
target=call_pipe,
1174
args=(pipe[1], subprocess.call, command),
1175
kwargs=popen_args)
1176
self.checker.start()
1177
self.checker_callback_tag = GLib.io_add_watch(
1178
GLib.IOChannel.unix_new(pipe[0].fileno()),
1179
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1180
self.checker_callback, pipe[0], command)
1181
# Re-run this periodically if run by GLib.timeout_add
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
1182
722
return True
1183
723
1184
724
def stop_checker(self):
1185
725
"""Force the checker process, if any, to stop."""
1186
726
if self.checker_callback_tag:
1187
GLib.source_remove(self.checker_callback_tag)
727
gobject.source_remove(self.checker_callback_tag)
1188
728
self.checker_callback_tag = None
1189
729
if getattr(self, "checker", None) is None:
1190
730
return
1191
731
logger.debug("Stopping checker for %(name)s", vars(self))
1192
self.checker.terminate()
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
1193
740
self.checker = None
1194
741
1195
742
1196
def dbus_service_property(dbus_interface,
1197
signature="v",
1198
access="readwrite",
1199
byte_arrays=False):
743
def dbus_service_property(dbus_interface, signature="v",
744
access="readwrite", byte_arrays=False):
1200
745
"""Decorators for marking methods of a DBusObjectWithProperties to
1201
746
become properties on the D-Bus.
1202
747
1203
748
The decorated method will be called with no arguments by "Get"
1204
749
and with one argument by "Set".
1205
750
1206
751
The parameters, where they are supported, are the same as
1207
752
dbus.service.method, except there is only "signature", since the
1208
753
type from Get() and the type sent to Set() is the same.
1211
756
# "Set" method, so we fail early here:
1212
757
if byte_arrays and signature != "ay":
1213
758
raise ValueError("Byte arrays not supported for non-'ay'"
1214
" signature {!r}".format(signature))
1215
759
" signature %r" % signature)
1216
760
def decorator(func):
1217
761
func._dbus_is_property = True
1218
762
func._dbus_interface = dbus_interface
1221
765
func._dbus_name = func.__name__
1222
766
if func._dbus_name.endswith("_dbus_property"):
1223
767
func._dbus_name = func._dbus_name[:-14]
1224
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1225
return func
1226
1227
return decorator
1228
1229
1230
def dbus_interface_annotations(dbus_interface):
1231
"""Decorator for marking functions returning interface annotations
1232
1233
Usage:
1234
1235
@dbus_interface_annotations("org.example.Interface")
1236
def _foo(self): # Function name does not matter
1237
return {"org.freedesktop.DBus.Deprecated": "true",
1238
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1239
"false"}
1240
"""
1241
1242
def decorator(func):
1243
func._dbus_is_interface = True
1244
func._dbus_interface = dbus_interface
1245
func._dbus_name = dbus_interface
1246
return func
1247
1248
return decorator
1249
1250
1251
def dbus_annotations(annotations):
1252
"""Decorator to annotate D-Bus methods, signals or properties
1253
Usage:
1254
1255
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1256
"org.freedesktop.DBus.Property."
1257
"EmitsChangedSignal": "false"})
1258
@dbus_service_property("org.example.Interface", signature="b",
1259
access="r")
1260
def Property_dbus_property(self):
1261
return dbus.Boolean(False)
1262
1263
See also the DBusObjectWithAnnotations class.
1264
"""
1265
1266
def decorator(func):
1267
func._dbus_annotations = annotations
1268
return func
1269
768
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
769
return func
1270
770
return decorator
1271
771
1272
772
1273
773
class DBusPropertyException(dbus.exceptions.DBusException):
1274
774
"""A base class for D-Bus property-related exceptions
1275
775
"""
1276
pass
776
def __unicode__(self):
777
return unicode(str(self))
1277
778
1278
779
1279
780
class DBusPropertyAccessException(DBusPropertyException):
1288
789
pass
1289
790
1290
791
1291
class DBusObjectWithAnnotations(dbus.service.Object):
1292
"""A D-Bus object with annotations.
1293
1294
Classes inheriting from this can use the dbus_annotations
1295
decorator to add annotations to methods or signals.
1296
"""
1297
1298
@staticmethod
1299
def _is_dbus_thing(thing):
1300
"""Returns a function testing if an attribute is a D-Bus thing
1301
1302
If called like _is_dbus_thing("method") it returns a function
1303
suitable for use as predicate to inspect.getmembers().
1304
"""
1305
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1306
False)
1307
1308
def _get_all_dbus_things(self, thing):
1309
"""Returns a generator of (name, attribute) pairs
1310
"""
1311
return ((getattr(athing.__get__(self), "_dbus_name", name),
1312
athing.__get__(self))
1313
for cls in self.__class__.__mro__
1314
for name, athing in
1315
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1316
1317
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1318
out_signature="s",
1319
path_keyword='object_path',
1320
connection_keyword='connection')
1321
def Introspect(self, object_path, connection):
1322
"""Overloading of standard D-Bus method.
1323
1324
Inserts annotation tags on methods and signals.
1325
"""
1326
xmlstring = dbus.service.Object.Introspect(self, object_path,
1327
connection)
1328
try:
1329
document = xml.dom.minidom.parseString(xmlstring)
1330
1331
for if_tag in document.getElementsByTagName("interface"):
1332
# Add annotation tags
1333
for typ in ("method", "signal"):
1334
for tag in if_tag.getElementsByTagName(typ):
1335
annots = dict()
1336
for name, prop in (self.
1337
_get_all_dbus_things(typ)):
1338
if (name == tag.getAttribute("name")
1339
and prop._dbus_interface
1340
== if_tag.getAttribute("name")):
1341
annots.update(getattr(
1342
prop, "_dbus_annotations", {}))
1343
for name, value in annots.items():
1344
ann_tag = document.createElement(
1345
"annotation")
1346
ann_tag.setAttribute("name", name)
1347
ann_tag.setAttribute("value", value)
1348
tag.appendChild(ann_tag)
1349
# Add interface annotation tags
1350
for annotation, value in dict(
1351
itertools.chain.from_iterable(
1352
annotations().items()
1353
for name, annotations
1354
in self._get_all_dbus_things("interface")
1355
if name == if_tag.getAttribute("name")
1356
)).items():
1357
ann_tag = document.createElement("annotation")
1358
ann_tag.setAttribute("name", annotation)
1359
ann_tag.setAttribute("value", value)
1360
if_tag.appendChild(ann_tag)
1361
# Fix argument name for the Introspect method itself
1362
if (if_tag.getAttribute("name")
1363
== dbus.INTROSPECTABLE_IFACE):
1364
for cn in if_tag.getElementsByTagName("method"):
1365
if cn.getAttribute("name") == "Introspect":
1366
for arg in cn.getElementsByTagName("arg"):
1367
if (arg.getAttribute("direction")
1368
== "out"):
1369
arg.setAttribute("name",
1370
"xml_data")
1371
xmlstring = document.toxml("utf-8")
1372
document.unlink()
1373
except (AttributeError, xml.dom.DOMException,
1374
xml.parsers.expat.ExpatError) as error:
1375
logger.error("Failed to override Introspection method",
1376
exc_info=error)
1377
return xmlstring
1378
1379
1380
class DBusObjectWithProperties(DBusObjectWithAnnotations):
792
class DBusObjectWithProperties(dbus.service.Object):
1381
793
"""A D-Bus object with properties.
1382
794
1383
795
Classes inheriting from this can use the dbus_service_property
1384
796
decorator to expose methods as D-Bus properties. It exposes the
1385
797
standard Get(), Set(), and GetAll() methods on the D-Bus.
1386
798
"""
1387
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
1388
812
def _get_dbus_property(self, interface_name, property_name):
1389
813
"""Returns a bound method if one exists which is a D-Bus
1390
814
property with the specified name and interface.
1391
815
"""
1392
for cls in self.__class__.__mro__:
1393
for name, value in inspect.getmembers(
1394
cls, self._is_dbus_thing("property")):
816
for cls in self.__class__.__mro__:
817
for name, value in (inspect.getmembers
818
(cls, self._is_dbus_property)):
1395
819
if (value._dbus_name == property_name
1396
820
and value._dbus_interface == interface_name):
1397
821
return value.__get__(self)
1398
822
1399
823
# No such property
1400
raise DBusPropertyNotFound("{}:{}.{}".format(
1401
self.dbus_object_path, interface_name, property_name))
1402
1403
@classmethod
1404
def _get_all_interface_names(cls):
1405
"""Get a sequence of all interfaces supported by an object"""
1406
return (name for name in set(getattr(getattr(x, attr),
1407
"_dbus_interface", None)
1408
for x in (inspect.getmro(cls))
1409
for attr in dir(x))
1410
if name is not None)
1411
1412
@dbus.service.method(dbus.PROPERTIES_IFACE,
1413
in_signature="ss",
824
raise DBusPropertyNotFound(self.dbus_object_path + ":"
825
+ interface_name + "."
826
+ property_name)
827
828
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1414
829
out_signature="v")
1415
830
def Get(self, interface_name, property_name):
1416
831
"""Standard D-Bus property Get() method, see D-Bus standard.
1422
837
if not hasattr(value, "variant_level"):
1423
838
return value
1424
839
return type(value)(value, variant_level=value.variant_level+1)
1425
840
1426
841
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1427
842
def Set(self, interface_name, property_name, value):
1428
843
"""Standard D-Bus property Set() method, see D-Bus standard.
1434
849
# The byte_arrays option is not supported yet on
1435
850
# signatures other than "ay".
1436
851
if prop._dbus_signature != "ay":
1437
raise ValueError("Byte arrays not supported for non-"
1438
"'ay' signature {!r}"
1439
.format(prop._dbus_signature))
1440
value = dbus.ByteArray(bytes(value))
852
raise ValueError
853
value = dbus.ByteArray(b''.join(chr(byte)
854
for byte in value))
1441
855
prop(value)
1442
1443
@dbus.service.method(dbus.PROPERTIES_IFACE,
1444
in_signature="s",
856
857
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1445
858
out_signature="a{sv}")
1446
859
def GetAll(self, interface_name):
1447
860
"""Standard D-Bus property GetAll() method, see D-Bus
1448
861
standard.
1449
862
1450
863
Note: Will not include properties with access="write".
1451
864
"""
1452
865
properties = {}
1453
for name, prop in self._get_all_dbus_things("property"):
866
for name, prop in self._get_all_dbus_properties():
1454
867
if (interface_name
1455
868
and interface_name != prop._dbus_interface):
1456
869
# Interface non-empty but did not match
1462
875
if not hasattr(value, "variant_level"):
1463
876
properties[name] = value
1464
877
continue
1465
properties[name] = type(value)(
1466
value, variant_level=value.variant_level + 1)
878
properties[name] = type(value)(value, variant_level=
879
value.variant_level+1)
1467
880
return dbus.Dictionary(properties, signature="sv")
1468
1469
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1470
def PropertiesChanged(self, interface_name, changed_properties,
1471
invalidated_properties):
1472
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1473
standard.
1474
"""
1475
pass
1476
881
1477
882
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1478
883
out_signature="s",
1479
884
path_keyword='object_path',
1480
885
connection_keyword='connection')
1481
886
def Introspect(self, object_path, connection):
1482
"""Overloading of standard D-Bus method.
1483
1484
Inserts property tags and interface annotation tags.
887
"""Standard D-Bus method, overloaded to insert property tags.
1485
888
"""
1486
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1487
object_path,
1488
connection)
889
xmlstring = dbus.service.Object.Introspect(self, object_path,
890
connection)
1489
891
try:
1490
892
document = xml.dom.minidom.parseString(xmlstring)
1491
1492
893
def make_tag(document, name, prop):
1493
894
e = document.createElement("property")
1494
895
e.setAttribute("name", name)
1495
896
e.setAttribute("type", prop._dbus_signature)
1496
897
e.setAttribute("access", prop._dbus_access)
1497
898
return e
1498
1499
899
for if_tag in document.getElementsByTagName("interface"):
1500
# Add property tags
1501
900
for tag in (make_tag(document, name, prop)
1502
901
for name, prop
1503
in self._get_all_dbus_things("property")
902
in self._get_all_dbus_properties()
1504
903
if prop._dbus_interface
1505
904
== if_tag.getAttribute("name")):
1506
905
if_tag.appendChild(tag)
1507
# Add annotation tags for properties
1508
for tag in if_tag.getElementsByTagName("property"):
1509
annots = dict()
1510
for name, prop in self._get_all_dbus_things(
1511
"property"):
1512
if (name == tag.getAttribute("name")
1513
and prop._dbus_interface
1514
== if_tag.getAttribute("name")):
1515
annots.update(getattr(
1516
prop, "_dbus_annotations", {}))
1517
for name, value in annots.items():
1518
ann_tag = document.createElement(
1519
"annotation")
1520
ann_tag.setAttribute("name", name)
1521
ann_tag.setAttribute("value", value)
1522
tag.appendChild(ann_tag)
1523
906
# Add the names to the return values for the
1524
907
# "org.freedesktop.DBus.Properties" methods
1525
908
if (if_tag.getAttribute("name")
1540
923
except (AttributeError, xml.dom.DOMException,
1541
924
xml.parsers.expat.ExpatError) as error:
1542
925
logger.error("Failed to override Introspection method",
1543
exc_info=error)
1544
return xmlstring
1545
1546
1547
try:
1548
dbus.OBJECT_MANAGER_IFACE
1549
except AttributeError:
1550
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1551
1552
1553
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1554
"""A D-Bus object with an ObjectManager.
1555
1556
Classes inheriting from this exposes the standard
1557
GetManagedObjects call and the InterfacesAdded and
1558
InterfacesRemoved signals on the standard
1559
"org.freedesktop.DBus.ObjectManager" interface.
1560
1561
Note: No signals are sent automatically; they must be sent
1562
manually.
1563
"""
1564
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1565
out_signature="a{oa{sa{sv}}}")
1566
def GetManagedObjects(self):
1567
"""This function must be overridden"""
1568
raise NotImplementedError()
1569
1570
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1571
signature="oa{sa{sv}}")
1572
def InterfacesAdded(self, object_path, interfaces_and_properties):
1573
pass
1574
1575
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1576
def InterfacesRemoved(self, object_path, interfaces):
1577
pass
1578
1579
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1580
out_signature="s",
1581
path_keyword='object_path',
1582
connection_keyword='connection')
1583
def Introspect(self, object_path, connection):
1584
"""Overloading of standard D-Bus method.
1585
1586
Override return argument name of GetManagedObjects to be
1587
"objpath_interfaces_and_properties"
1588
"""
1589
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1590
object_path,
1591
connection)
1592
try:
1593
document = xml.dom.minidom.parseString(xmlstring)
1594
1595
for if_tag in document.getElementsByTagName("interface"):
1596
# Fix argument name for the GetManagedObjects method
1597
if (if_tag.getAttribute("name")
1598
== dbus.OBJECT_MANAGER_IFACE):
1599
for cn in if_tag.getElementsByTagName("method"):
1600
if (cn.getAttribute("name")
1601
== "GetManagedObjects"):
1602
for arg in cn.getElementsByTagName("arg"):
1603
if (arg.getAttribute("direction")
1604
== "out"):
1605
arg.setAttribute(
1606
"name",
1607
"objpath_interfaces"
1608
"_and_properties")
1609
xmlstring = document.toxml("utf-8")
1610
document.unlink()
1611
except (AttributeError, xml.dom.DOMException,
1612
xml.parsers.expat.ExpatError) as error:
1613
logger.error("Failed to override Introspection method",
1614
exc_info=error)
1615
return xmlstring
1616
1617
1618
def datetime_to_dbus(dt, variant_level=0):
926
error)
927
return xmlstring
928
929
930
def datetime_to_dbus (dt, variant_level=0):
1619
931
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1620
932
if dt is None:
1621
return dbus.String("", variant_level=variant_level)
1622
return dbus.String(dt.isoformat(), variant_level=variant_level)
1623
1624
1625
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1626
"""A class decorator; applied to a subclass of
1627
dbus.service.Object, it will add alternate D-Bus attributes with
1628
interface names according to the "alt_interface_names" mapping.
1629
Usage:
1630
1631
@alternate_dbus_interfaces({"org.example.Interface":
1632
"net.example.AlternateInterface"})
1633
class SampleDBusObject(dbus.service.Object):
1634
@dbus.service.method("org.example.Interface")
1635
def SampleDBusMethod():
1636
pass
1637
1638
The above "SampleDBusMethod" on "SampleDBusObject" will be
1639
reachable via two interfaces: "org.example.Interface" and
1640
"net.example.AlternateInterface", the latter of which will have
1641
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1642
"true", unless "deprecate" is passed with a False value.
1643
1644
This works for methods and signals, and also for D-Bus properties
1645
(from DBusObjectWithProperties) and interfaces (from the
1646
dbus_interface_annotations decorator).
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.
1647
942
"""
1648
1649
def wrapper(cls):
1650
for orig_interface_name, alt_interface_name in (
1651
alt_interface_names.items()):
1652
attr = {}
1653
interface_names = set()
1654
# Go though all attributes of the class
1655
for attrname, attribute in inspect.getmembers(cls):
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):
1656
950
# Ignore non-D-Bus attributes, and D-Bus attributes
1657
951
# with the wrong interface name
1658
952
if (not hasattr(attribute, "_dbus_interface")
1659
or not attribute._dbus_interface.startswith(
1660
orig_interface_name)):
953
or not attribute._dbus_interface
954
.startswith("se.recompile.Mandos")):
1661
955
continue
1662
956
# Create an alternate D-Bus interface name based on
1663
957
# the current name
1664
alt_interface = attribute._dbus_interface.replace(
1665
orig_interface_name, alt_interface_name)
1666
interface_names.add(alt_interface)
958
alt_interface = (attribute._dbus_interface
959
.replace("se.recompile.Mandos",
960
"se.bsnet.fukt.Mandos"))
1667
961
# Is this a D-Bus signal?
1668
962
if getattr(attribute, "_dbus_is_signal", False):
1669
# Extract the original non-method undecorated
1670
# function by black magic
1671
if sys.version_info.major == 2:
1672
nonmethod_func = (dict(
963
# Extract the original non-method function by
964
# black magic
965
nonmethod_func = (dict(
1673
966
zip(attribute.func_code.co_freevars,
1674
attribute.__closure__))
1675
["func"].cell_contents)
1676
else:
1677
nonmethod_func = (dict(
1678
zip(attribute.__code__.co_freevars,
1679
attribute.__closure__))
1680
["func"].cell_contents)
967
attribute.__closure__))["func"]
968
.cell_contents)
1681
969
# Create a new, but exactly alike, function
1682
970
# object, and decorate it to be a new D-Bus signal
1683
971
# with the alternate D-Bus interface name
1684
new_function = copy_function(nonmethod_func)
1685
new_function = (dbus.service.signal(
1686
alt_interface,
1687
attribute._dbus_signature)(new_function))
1688
# Copy annotations, if any
1689
try:
1690
new_function._dbus_annotations = dict(
1691
attribute._dbus_annotations)
1692
except AttributeError:
1693
pass
1694
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)))
1695
981
# Define a creator of a function to call both the
1696
# original and alternate functions, so both the
1697
# original and alternate signals gets sent when
1698
# the function is called
982
# old and new functions, so both the old and new
983
# signals gets sent when the function is called
1699
984
def fixscope(func1, func2):
1700
985
"""This function is a scope container to pass
1701
986
func1 and func2 to the "call_both" function
1702
987
outside of its arguments"""
1703
1704
@functools.wraps(func2)
1705
988
def call_both(*args, **kwargs):
1706
989
"""This function will emit two D-Bus
1707
990
signals by calling func1 and func2"""
1708
991
func1(*args, **kwargs)
1709
992
func2(*args, **kwargs)
1710
# Make wrapper function look like a D-Bus
1711
# signal
1712
for name, attr in inspect.getmembers(func2):
1713
if name.startswith("_dbus_"):
1714
setattr(call_both, name, attr)
1715
1716
993
return call_both
1717
994
# Create the "call_both" function and add it to
1718
995
# the class
1719
attr[attrname] = fixscope(attribute, new_function)
996
attr[attrname] = fixscope(attribute,
997
new_function)
1720
998
# Is this a D-Bus method?
1721
999
elif getattr(attribute, "_dbus_is_method", False):
1722
1000
# Create a new, but exactly alike, function
1723
1001
# object. Decorate it to be a new D-Bus method
1724
1002
# with the alternate D-Bus interface name. Add it
1725
1003
# to the class.
1726
attr[attrname] = (
1727
dbus.service.method(
1728
alt_interface,
1729
attribute._dbus_in_signature,
1730
attribute._dbus_out_signature)
1731
(copy_function(attribute)))
1732
# Copy annotations, if any
1733
try:
1734
attr[attrname]._dbus_annotations = dict(
1735
attribute._dbus_annotations)
1736
except AttributeError:
1737
pass
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)))
1738
1014
# Is this a D-Bus property?
1739
1015
elif getattr(attribute, "_dbus_is_property", False):
1740
1016
# Create a new, but exactly alike, function
1741
1017
# object, and decorate it to be a new D-Bus
1742
1018
# property with the alternate D-Bus interface
1743
1019
# name. Add it to the class.
1744
attr[attrname] = (dbus_service_property(
1745
alt_interface, attribute._dbus_signature,
1746
attribute._dbus_access,
1747
attribute._dbus_get_args_options
1748
["byte_arrays"])
1749
(copy_function(attribute)))
1750
# Copy annotations, if any
1751
try:
1752
attr[attrname]._dbus_annotations = dict(
1753
attribute._dbus_annotations)
1754
except AttributeError:
1755
pass
1756
# Is this a D-Bus interface?
1757
elif getattr(attribute, "_dbus_is_interface", False):
1758
# Create a new, but exactly alike, function
1759
# object. Decorate it to be a new D-Bus interface
1760
# with the alternate D-Bus interface name. Add it
1761
# to the class.
1762
attr[attrname] = (
1763
dbus_interface_annotations(alt_interface)
1764
(copy_function(attribute)))
1765
if deprecate:
1766
# Deprecate all alternate interfaces
1767
iname = "_AlternateDBusNames_interface_annotation{}"
1768
for interface_name in interface_names:
1769
1770
@dbus_interface_annotations(interface_name)
1771
def func(self):
1772
return {"org.freedesktop.DBus.Deprecated":
1773
"true"}
1774
# Find an unused name
1775
for aname in (iname.format(i)
1776
for i in itertools.count()):
1777
if aname not in attr:
1778
attr[aname] = func
1779
break
1780
if interface_names:
1781
# Replace the class with a new subclass of it with
1782
# methods, signals, etc. as created above.
1783
if sys.version_info.major == 2:
1784
cls = type(b"{}Alternate".format(cls.__name__),
1785
(cls, ), attr)
1786
else:
1787
cls = type("{}Alternate".format(cls.__name__),
1788
(cls, ), attr)
1789
return cls
1790
1791
return wrapper
1792
1793
1794
@alternate_dbus_interfaces({"se.recompile.Mandos":
1795
"se.bsnet.fukt.Mandos"})
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
1796
1036
class ClientDBus(Client, DBusObjectWithProperties):
1797
1037
"""A Client class using D-Bus
1798
1038
1799
1039
Attributes:
1800
1040
dbus_object_path: dbus.ObjectPath
1801
1041
bus: dbus.SystemBus()
1802
1042
"""
1803
1043
1804
1044
runtime_expansions = (Client.runtime_expansions
1805
+ ("dbus_object_path", ))
1806
1807
_interface = "se.recompile.Mandos.Client"
1808
1045
+ ("dbus_object_path",))
1046
1809
1047
# dbus.service.Object doesn't use super(), so we can't either.
1810
1811
def __init__(self, bus=None, *args, **kwargs):
1048
1049
def __init__(self, bus = None, *args, **kwargs):
1812
1050
self.bus = bus
1813
1051
Client.__init__(self, *args, **kwargs)
1052
self._approvals_pending = 0
1053
1054
self._approvals_pending = 0
1814
1055
# Only now, when this client is initialized, can it show up on
1815
1056
# the D-Bus
1816
client_object_name = str(self.name).translate(
1057
client_object_name = unicode(self.name).translate(
1817
1058
{ord("."): ord("_"),
1818
1059
ord("-"): ord("_")})
1819
self.dbus_object_path = dbus.ObjectPath(
1820
"/clients/" + client_object_name)
1060
self.dbus_object_path = (dbus.ObjectPath
1061
("/clients/" + client_object_name))
1821
1062
DBusObjectWithProperties.__init__(self, self.bus,
1822
1063
self.dbus_object_path)
1823
1824
def notifychangeproperty(transform_func, dbus_name,
1825
type_func=lambda x: x,
1826
variant_level=1,
1827
invalidate_only=False,
1828
_interface=_interface):
1064
1065
def notifychangeproperty(transform_func,
1066
dbus_name, type_func=lambda x: x,
1067
variant_level=1):
1829
1068
""" Modify a variable so that it's a property which announces
1830
1069
its changes to DBus.
1831
1070
1832
1071
transform_fun: Function that takes a value and a variant_level
1833
1072
and transforms it to a D-Bus type.
1834
1073
dbus_name: D-Bus name of the variable
1836
1075
to the D-Bus. Default: no transform
1837
1076
variant_level: D-Bus variant level. Default: 1
1838
1077
"""
1839
attrname = "_{}".format(dbus_name)
1840
1078
attrname = "_{0}".format(dbus_name)
1841
1079
def setter(self, value):
1842
1080
if hasattr(self, "dbus_object_path"):
1843
1081
if (not hasattr(self, attrname) or
1844
1082
type_func(getattr(self, attrname, None))
1845
1083
!= type_func(value)):
1846
if invalidate_only:
1847
self.PropertiesChanged(
1848
_interface, dbus.Dictionary(),
1849
dbus.Array((dbus_name, )))
1850
else:
1851
dbus_value = transform_func(
1852
type_func(value),
1853
variant_level=variant_level)
1854
self.PropertyChanged(dbus.String(dbus_name),
1855
dbus_value)
1856
self.PropertiesChanged(
1857
_interface,
1858
dbus.Dictionary({dbus.String(dbus_name):
1859
dbus_value}),
1860
dbus.Array())
1084
dbus_value = transform_func(type_func(value),
1085
variant_level
1086
=variant_level)
1087
self.PropertyChanged(dbus.String(dbus_name),
1088
dbus_value)
1861
1089
setattr(self, attrname, value)
1862
1090
1863
1091
return property(lambda self: getattr(self, attrname), setter)
1864
1092
1093
1865
1094
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1866
1095
approvals_pending = notifychangeproperty(dbus.Boolean,
1867
1096
"ApprovalPending",
1868
type_func=bool)
1097
type_func = bool)
1869
1098
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1870
1099
last_enabled = notifychangeproperty(datetime_to_dbus,
1871
1100
"LastEnabled")
1872
checker = notifychangeproperty(
1873
dbus.Boolean, "CheckerRunning",
1874
type_func=lambda checker: checker is not None)
1101
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1102
type_func = lambda checker:
1103
checker is not None)
1875
1104
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1876
1105
"LastCheckedOK")
1877
last_checker_status = notifychangeproperty(dbus.Int16,
1878
"LastCheckerStatus")
1879
1106
last_approval_request = notifychangeproperty(
1880
1107
datetime_to_dbus, "LastApprovalRequest")
1881
1108
approved_by_default = notifychangeproperty(dbus.Boolean,
1882
1109
"ApprovedByDefault")
1883
approval_delay = notifychangeproperty(
1884
dbus.UInt64, "ApprovalDelay",
1885
type_func=lambda td: td.total_seconds() * 1000)
1110
approval_delay = notifychangeproperty(dbus.UInt64,
1111
"ApprovalDelay",
1112
type_func =
1113
timedelta_to_milliseconds)
1886
1114
approval_duration = notifychangeproperty(
1887
1115
dbus.UInt64, "ApprovalDuration",
1888
type_func=lambda td: td.total_seconds() * 1000)
1116
type_func = timedelta_to_milliseconds)
1889
1117
host = notifychangeproperty(dbus.String, "Host")
1890
timeout = notifychangeproperty(
1891
dbus.UInt64, "Timeout",
1892
type_func=lambda td: td.total_seconds() * 1000)
1118
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1119
type_func =
1120
timedelta_to_milliseconds)
1893
1121
extended_timeout = notifychangeproperty(
1894
1122
dbus.UInt64, "ExtendedTimeout",
1895
type_func=lambda td: td.total_seconds() * 1000)
1896
interval = notifychangeproperty(
1897
dbus.UInt64, "Interval",
1898
type_func=lambda td: td.total_seconds() * 1000)
1123
type_func = timedelta_to_milliseconds)
1124
interval = notifychangeproperty(dbus.UInt64,
1125
"Interval",
1126
type_func =
1127
timedelta_to_milliseconds)
1899
1128
checker_command = notifychangeproperty(dbus.String, "Checker")
1900
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1901
invalidate_only=True)
1902
1129
1903
1130
del notifychangeproperty
1904
1131
1905
1132
def __del__(self, *args, **kwargs):
1906
1133
try:
1907
1134
self.remove_from_connection()
1910
1137
if hasattr(DBusObjectWithProperties, "__del__"):
1911
1138
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1912
1139
Client.__del__(self, *args, **kwargs)
1913
1914
def checker_callback(self, source, condition,
1915
connection, command, *args, **kwargs):
1916
ret = Client.checker_callback(self, source, condition,
1917
connection, command, *args,
1918
**kwargs)
1919
exitstatus = self.last_checker_status
1920
if exitstatus >= 0:
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)
1921
1147
# Emit D-Bus signal
1922
1148
self.CheckerCompleted(dbus.Int16(exitstatus),
1923
# This is specific to GNU libC
1924
dbus.Int64(exitstatus << 8),
1149
dbus.Int64(condition),
1925
1150
dbus.String(command))
1926
1151
else:
1927
1152
# Emit D-Bus signal
1928
1153
self.CheckerCompleted(dbus.Int16(-1),
1929
dbus.Int64(
1930
# This is specific to GNU libC
1931
(exitstatus << 8)
1932
| self.last_checker_signal),
1154
dbus.Int64(condition),
1933
1155
dbus.String(command))
1934
return ret
1935
1156
1157
return Client.checker_callback(self, pid, condition, command,
1158
*args, **kwargs)
1159
1936
1160
def start_checker(self, *args, **kwargs):
1937
old_checker_pid = getattr(self.checker, "pid", None)
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
1938
1166
r = Client.start_checker(self, *args, **kwargs)
1939
1167
# Only if new checker process was started
1940
1168
if (self.checker is not None
1942
1170
# Emit D-Bus signal
1943
1171
self.CheckerStarted(self.current_checker_command)
1944
1172
return r
1945
1173
1946
1174
def _reset_approved(self):
1947
1175
self.approved = None
1948
1176
return False
1949
1177
1950
1178
def approve(self, value=True):
1179
self.send_changedstate()
1951
1180
self.approved = value
1952
GLib.timeout_add(int(self.approval_duration.total_seconds()
1953
* 1000), self._reset_approved)
1954
self.send_changedstate()
1955
1956
# D-Bus methods, signals & properties
1957
1958
# Interfaces
1959
1960
# Signals
1961
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
1962
1191
# CheckerCompleted - signal
1963
1192
@dbus.service.signal(_interface, signature="nxs")
1964
1193
def CheckerCompleted(self, exitcode, waitstatus, command):
1965
1194
"D-Bus signal"
1966
1195
pass
1967
1196
1968
1197
# CheckerStarted - signal
1969
1198
@dbus.service.signal(_interface, signature="s")
1970
1199
def CheckerStarted(self, command):
1971
1200
"D-Bus signal"
1972
1201
pass
1973
1202
1974
1203
# PropertyChanged - signal
1975
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1976
1204
@dbus.service.signal(_interface, signature="sv")
1977
1205
def PropertyChanged(self, property, value):
1978
1206
"D-Bus signal"
1979
1207
pass
1980
1208
1981
1209
# GotSecret - signal
1982
1210
@dbus.service.signal(_interface)
1983
1211
def GotSecret(self):
1986
1214
server to mandos-client
1987
1215
"""
1988
1216
pass
1989
1217
1990
1218
# Rejected - signal
1991
1219
@dbus.service.signal(_interface, signature="s")
1992
1220
def Rejected(self, reason):
1993
1221
"D-Bus signal"
1994
1222
pass
1995
1223
1996
1224
# NeedApproval - signal
1997
1225
@dbus.service.signal(_interface, signature="tb")
1998
1226
def NeedApproval(self, timeout, default):
1999
1227
"D-Bus signal"
2000
1228
return self.need_approval()
2001
2002
# Methods
2003
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
2004
1240
# Approve - method
2005
1241
@dbus.service.method(_interface, in_signature="b")
2006
1242
def Approve(self, value):
2007
1243
self.approve(value)
2008
1244
2009
1245
# CheckedOK - method
2010
1246
@dbus.service.method(_interface)
2011
1247
def CheckedOK(self):
2012
1248
self.checked_ok()
2013
1249
2014
1250
# Enable - method
2015
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2016
1251
@dbus.service.method(_interface)
2017
1252
def Enable(self):
2018
1253
"D-Bus method"
2019
1254
self.enable()
2020
1255
2021
1256
# StartChecker - method
2022
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2023
1257
@dbus.service.method(_interface)
2024
1258
def StartChecker(self):
2025
1259
"D-Bus method"
2026
1260
self.start_checker()
2027
1261
2028
1262
# Disable - method
2029
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2030
1263
@dbus.service.method(_interface)
2031
1264
def Disable(self):
2032
1265
"D-Bus method"
2033
1266
self.disable()
2034
1267
2035
1268
# StopChecker - method
2036
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2037
1269
@dbus.service.method(_interface)
2038
1270
def StopChecker(self):
2039
1271
self.stop_checker()
2040
2041
# Properties
2042
1272
1273
## Properties
1274
2043
1275
# ApprovalPending - property
2044
1276
@dbus_service_property(_interface, signature="b", access="read")
2045
1277
def ApprovalPending_dbus_property(self):
2046
1278
return dbus.Boolean(bool(self.approvals_pending))
2047
1279
2048
1280
# ApprovedByDefault - property
2049
@dbus_service_property(_interface,
2050
signature="b",
1281
@dbus_service_property(_interface, signature="b",
2051
1282
access="readwrite")
2052
1283
def ApprovedByDefault_dbus_property(self, value=None):
2053
1284
if value is None: # get
2054
1285
return dbus.Boolean(self.approved_by_default)
2055
1286
self.approved_by_default = bool(value)
2056
1287
2057
1288
# ApprovalDelay - property
2058
@dbus_service_property(_interface,
2059
signature="t",
1289
@dbus_service_property(_interface, signature="t",
2060
1290
access="readwrite")
2061
1291
def ApprovalDelay_dbus_property(self, value=None):
2062
1292
if value is None: # get
2063
return dbus.UInt64(self.approval_delay.total_seconds()
2064
* 1000)
1293
return dbus.UInt64(self.approval_delay_milliseconds())
2065
1294
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2066
1295
2067
1296
# ApprovalDuration - property
2068
@dbus_service_property(_interface,
2069
signature="t",
1297
@dbus_service_property(_interface, signature="t",
2070
1298
access="readwrite")
2071
1299
def ApprovalDuration_dbus_property(self, value=None):
2072
1300
if value is None: # get
2073
return dbus.UInt64(self.approval_duration.total_seconds()
2074
* 1000)
1301
return dbus.UInt64(timedelta_to_milliseconds(
1302
self.approval_duration))
2075
1303
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2076
1304
2077
1305
# Name - property
2078
@dbus_annotations(
2079
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2080
1306
@dbus_service_property(_interface, signature="s", access="read")
2081
1307
def Name_dbus_property(self):
2082
1308
return dbus.String(self.name)
2083
2084
# KeyID - property
2085
@dbus_annotations(
2086
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2087
@dbus_service_property(_interface, signature="s", access="read")
2088
def KeyID_dbus_property(self):
2089
return dbus.String(self.key_id)
2090
1309
2091
1310
# Fingerprint - property
2092
@dbus_annotations(
2093
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2094
1311
@dbus_service_property(_interface, signature="s", access="read")
2095
1312
def Fingerprint_dbus_property(self):
2096
1313
return dbus.String(self.fingerprint)
2097
1314
2098
1315
# Host - property
2099
@dbus_service_property(_interface,
2100
signature="s",
1316
@dbus_service_property(_interface, signature="s",
2101
1317
access="readwrite")
2102
1318
def Host_dbus_property(self, value=None):
2103
1319
if value is None: # get
2104
1320
return dbus.String(self.host)
2105
self.host = str(value)
2106
1321
self.host = unicode(value)
1322
2107
1323
# Created - property
2108
@dbus_annotations(
2109
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2110
1324
@dbus_service_property(_interface, signature="s", access="read")
2111
1325
def Created_dbus_property(self):
2112
1326
return datetime_to_dbus(self.created)
2113
1327
2114
1328
# LastEnabled - property
2115
1329
@dbus_service_property(_interface, signature="s", access="read")
2116
1330
def LastEnabled_dbus_property(self):
2117
1331
return datetime_to_dbus(self.last_enabled)
2118
1332
2119
1333
# Enabled - property
2120
@dbus_service_property(_interface,
2121
signature="b",
1334
@dbus_service_property(_interface, signature="b",
2122
1335
access="readwrite")
2123
1336
def Enabled_dbus_property(self, value=None):
2124
1337
if value is None: # get
2127
1340
self.enable()
2128
1341
else:
2129
1342
self.disable()
2130
1343
2131
1344
# LastCheckedOK - property
2132
@dbus_service_property(_interface,
2133
signature="s",
1345
@dbus_service_property(_interface, signature="s",
2134
1346
access="readwrite")
2135
1347
def LastCheckedOK_dbus_property(self, value=None):
2136
1348
if value is not None:
2137
1349
self.checked_ok()
2138
1350
return
2139
1351
return datetime_to_dbus(self.last_checked_ok)
2140
2141
# LastCheckerStatus - property
2142
@dbus_service_property(_interface, signature="n", access="read")
2143
def LastCheckerStatus_dbus_property(self):
2144
return dbus.Int16(self.last_checker_status)
2145
1352
2146
1353
# Expires - property
2147
1354
@dbus_service_property(_interface, signature="s", access="read")
2148
1355
def Expires_dbus_property(self):
2149
1356
return datetime_to_dbus(self.expires)
2150
1357
2151
1358
# LastApprovalRequest - property
2152
1359
@dbus_service_property(_interface, signature="s", access="read")
2153
1360
def LastApprovalRequest_dbus_property(self):
2154
1361
return datetime_to_dbus(self.last_approval_request)
2155
1362
2156
1363
# Timeout - property
2157
@dbus_service_property(_interface,
2158
signature="t",
1364
@dbus_service_property(_interface, signature="t",
2159
1365
access="readwrite")
2160
1366
def Timeout_dbus_property(self, value=None):
2161
1367
if value is None: # get
2162
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2163
old_timeout = self.timeout
1368
return dbus.UInt64(self.timeout_milliseconds())
2164
1369
self.timeout = datetime.timedelta(0, 0, 0, value)
2165
# Reschedule disabling
1370
# Reschedule timeout
2166
1371
if self.enabled:
2167
1372
now = datetime.datetime.utcnow()
2168
self.expires += self.timeout - old_timeout
2169
if self.expires <= now:
1373
time_to_die = timedelta_to_milliseconds(
1374
(self.last_checked_ok + self.timeout) - now)
1375
if time_to_die <= 0:
2170
1376
# The timeout has passed
2171
1377
self.disable()
2172
1378
else:
1379
self.expires = (now +
1380
datetime.timedelta(milliseconds =
1381
time_to_die))
2173
1382
if (getattr(self, "disable_initiator_tag", None)
2174
1383
is None):
2175
1384
return
2176
GLib.source_remove(self.disable_initiator_tag)
2177
self.disable_initiator_tag = GLib.timeout_add(
2178
int((self.expires - now).total_seconds() * 1000),
2179
self.disable)
2180
1385
gobject.source_remove(self.disable_initiator_tag)
1386
self.disable_initiator_tag = (gobject.timeout_add
1387
(time_to_die,
1388
self.disable))
1389
2181
1390
# ExtendedTimeout - property
2182
@dbus_service_property(_interface,
2183
signature="t",
1391
@dbus_service_property(_interface, signature="t",
2184
1392
access="readwrite")
2185
1393
def ExtendedTimeout_dbus_property(self, value=None):
2186
1394
if value is None: # get
2187
return dbus.UInt64(self.extended_timeout.total_seconds()
2188
* 1000)
1395
return dbus.UInt64(self.extended_timeout_milliseconds())
2189
1396
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2190
1397
2191
1398
# Interval - property
2192
@dbus_service_property(_interface,
2193
signature="t",
1399
@dbus_service_property(_interface, signature="t",
2194
1400
access="readwrite")
2195
1401
def Interval_dbus_property(self, value=None):
2196
1402
if value is None: # get
2197
return dbus.UInt64(self.interval.total_seconds() * 1000)
1403
return dbus.UInt64(self.interval_milliseconds())
2198
1404
self.interval = datetime.timedelta(0, 0, 0, value)
2199
1405
if getattr(self, "checker_initiator_tag", None) is None:
2200
1406
return
2201
1407
if self.enabled:
2202
1408
# Reschedule checker run
2203
GLib.source_remove(self.checker_initiator_tag)
2204
self.checker_initiator_tag = GLib.timeout_add(
2205
value, self.start_checker)
2206
self.start_checker() # Start one now, too
2207
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
2208
1414
# Checker - property
2209
@dbus_service_property(_interface,
2210
signature="s",
1415
@dbus_service_property(_interface, signature="s",
2211
1416
access="readwrite")
2212
1417
def Checker_dbus_property(self, value=None):
2213
1418
if value is None: # get
2214
1419
return dbus.String(self.checker_command)
2215
self.checker_command = str(value)
2216
1420
self.checker_command = unicode(value)
1421
2217
1422
# CheckerRunning - property
2218
@dbus_service_property(_interface,
2219
signature="b",
1423
@dbus_service_property(_interface, signature="b",
2220
1424
access="readwrite")
2221
1425
def CheckerRunning_dbus_property(self, value=None):
2222
1426
if value is None: # get
2225
1429
self.start_checker()
2226
1430
else:
2227
1431
self.stop_checker()
2228
1432
2229
1433
# ObjectPath - property
2230
@dbus_annotations(
2231
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2232
"org.freedesktop.DBus.Deprecated": "true"})
2233
1434
@dbus_service_property(_interface, signature="o", access="read")
2234
1435
def ObjectPath_dbus_property(self):
2235
return self.dbus_object_path # is already a dbus.ObjectPath
2236
1436
return self.dbus_object_path # is already a dbus.ObjectPath
1437
2237
1438
# Secret = property
2238
@dbus_annotations(
2239
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2240
"invalidates"})
2241
@dbus_service_property(_interface,
2242
signature="ay",
2243
access="write",
2244
byte_arrays=True)
1439
@dbus_service_property(_interface, signature="ay",
1440
access="write", byte_arrays=True)
2245
1441
def Secret_dbus_property(self, value):
2246
self.secret = bytes(value)
2247
1442
self.secret = str(value)
1443
2248
1444
del _interface
2249
1445
2250
1446
2251
class ProxyClient:
2252
def __init__(self, child_pipe, key_id, fpr, address):
1447
class ProxyClient(object):
1448
def __init__(self, child_pipe, fpr, address):
2253
1449
self._pipe = child_pipe
2254
self._pipe.send(('init', key_id, fpr, address))
1450
self._pipe.send(('init', fpr, address))
2255
1451
if not self._pipe.recv():
2256
raise KeyError(key_id or fpr)
2257
1452
raise KeyError()
1453
2258
1454
def __getattribute__(self, name):
2259
1455
if name == '_pipe':
2260
1456
return super(ProxyClient, self).__getattribute__(name)
2263
1459
if data[0] == 'data':
2264
1460
return data[1]
2265
1461
if data[0] == 'function':
2266
2267
1462
def func(*args, **kwargs):
2268
1463
self._pipe.send(('funcall', name, args, kwargs))
2269
1464
return self._pipe.recv()[1]
2270
2271
1465
return func
2272
1466
2273
1467
def __setattr__(self, name, value):
2274
1468
if name == '_pipe':
2275
1469
return super(ProxyClient, self).__setattr__(name, value)
2276
1470
self._pipe.send(('setattr', name, value))
2277
1471
2278
1472
1473
class ClientDBusTransitional(ClientDBus):
1474
__metaclass__ = AlternateDBusNamesMetaclass
1475
1476
2279
1477
class ClientHandler(socketserver.BaseRequestHandler, object):
2280
1478
"""A class to handle client connections.
2281
1479
2282
1480
Instantiated once for each connection to handle it.
2283
1481
Note: This will run in its own forked process."""
2284
1482
2285
1483
def handle(self):
2286
1484
with contextlib.closing(self.server.child_pipe) as child_pipe:
2287
1485
logger.info("TCP connection from: %s",
2288
str(self.client_address))
1486
unicode(self.client_address))
2289
1487
logger.debug("Pipe FD: %d",
2290
1488
self.server.child_pipe.fileno())
2291
2292
session = gnutls.ClientSession(self.request)
2293
2294
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2295
# "+AES-256-CBC", "+SHA1",
2296
# "+COMP-NULL", "+CTYPE-OPENPGP",
2297
# "+DHE-DSS"))
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"))
2298
1504
# Use a fallback default, since this MUST be set.
2299
1505
priority = self.server.gnutls_priority
2300
1506
if priority is None:
2301
1507
priority = "NORMAL"
2302
gnutls.priority_set_direct(session._c_object,
2303
priority.encode("utf-8"),
2304
None)
2305
1508
(gnutls.library.functions
1509
.gnutls_priority_set_direct(session._c_object,
1510
priority, None))
1511
2306
1512
# Start communication using the Mandos protocol
2307
1513
# Get protocol number
2308
1514
line = self.request.makefile().readline()
2309
1515
logger.debug("Protocol version: %r", line)
2310
1516
try:
2311
1517
if int(line.strip().split()[0]) > 1:
2312
raise RuntimeError(line)
1518
raise RuntimeError
2313
1519
except (ValueError, IndexError, RuntimeError) as error:
2314
1520
logger.error("Unknown protocol version: %s", error)
2315
1521
return
2316
1522
2317
1523
# Start GnuTLS connection
2318
1524
try:
2319
1525
session.handshake()
2320
except gnutls.Error as error:
1526
except gnutls.errors.GNUTLSError as error:
2321
1527
logger.warning("Handshake failed: %s", error)
2322
1528
# Do not run session.bye() here: the session is not
2323
1529
# established. Just abandon the request.
2324
1530
return
2325
1531
logger.debug("Handshake succeeded")
2326
1532
2327
1533
approval_required = False
2328
1534
try:
2329
if gnutls.has_rawpk:
2330
fpr = b""
2331
try:
2332
key_id = self.key_id(
2333
self.peer_certificate(session))
2334
except (TypeError, gnutls.Error) as error:
2335
logger.warning("Bad certificate: %s", error)
2336
return
2337
logger.debug("Key ID: %s", key_id)
2338
2339
else:
2340
key_id = b""
2341
try:
2342
fpr = self.fingerprint(
2343
self.peer_certificate(session))
2344
except (TypeError, gnutls.Error) as error:
2345
logger.warning("Bad certificate: %s", error)
2346
return
2347
logger.debug("Fingerprint: %s", fpr)
2348
2349
try:
2350
client = ProxyClient(child_pipe, key_id, fpr,
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,
2351
1546
self.client_address)
2352
1547
except KeyError:
2353
1548
return
2354
1549
1550
if self.server.use_dbus:
1551
# Emit D-Bus signal
1552
client.NewRequest(str(self.client_address))
1553
2355
1554
if client.approval_delay:
2356
1555
delay = client.approval_delay
2357
1556
client.approvals_pending += 1
2358
1557
approval_required = True
2359
1558
2360
1559
while True:
2361
1560
if not client.enabled:
2362
1561
logger.info("Client %s is disabled",
2363
client.name)
1562
client.name)
2364
1563
if self.server.use_dbus:
2365
1564
# Emit D-Bus signal
2366
1565
client.Rejected("Disabled")
2367
1566
return
2368
1567
2369
1568
if client.approved or not client.approval_delay:
2370
# We are approved or approval is disabled
1569
#We are approved or approval is disabled
2371
1570
break
2372
1571
elif client.approved is None:
2373
1572
logger.info("Client %s needs approval",
2375
1574
if self.server.use_dbus:
2376
1575
# Emit D-Bus signal
2377
1576
client.NeedApproval(
2378
client.approval_delay.total_seconds()
2379
* 1000, client.approved_by_default)
1577
client.approval_delay_milliseconds(),
1578
client.approved_by_default)
2380
1579
else:
2381
1580
logger.warning("Client %s was not approved",
2382
1581
client.name)
2384
1583
# Emit D-Bus signal
2385
1584
client.Rejected("Denied")
2386
1585
return
2387
2388
# wait until timeout or approved
1586
1587
#wait until timeout or approved
2389
1588
time = datetime.datetime.now()
2390
1589
client.changedstate.acquire()
2391
client.changedstate.wait(delay.total_seconds())
1590
(client.changedstate.wait
1591
(float(client.timedelta_to_milliseconds(delay)
1592
/ 1000)))
2392
1593
client.changedstate.release()
2393
1594
time2 = datetime.datetime.now()
2394
1595
if (time2 - time) >= delay:
2404
1605
break
2405
1606
else:
2406
1607
delay -= time2 - time
2407
2408
try:
2409
session.send(client.secret)
2410
except gnutls.Error as error:
2411
logger.warning("gnutls send failed",
2412
exc_info=error)
2413
return
2414
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
2415
1621
logger.info("Sending secret to %s", client.name)
2416
1622
# bump the timeout using extended_timeout
2417
client.bump_timeout(client.extended_timeout)
1623
client.checked_ok(client.extended_timeout)
2418
1624
if self.server.use_dbus:
2419
1625
# Emit D-Bus signal
2420
1626
client.GotSecret()
2421
1627
2422
1628
finally:
2423
1629
if approval_required:
2424
1630
client.approvals_pending -= 1
2425
1631
try:
2426
1632
session.bye()
2427
except gnutls.Error as error:
2428
logger.warning("GnuTLS bye failed",
2429
exc_info=error)
2430
1633
except gnutls.errors.GNUTLSError as error:
1634
logger.warning("GnuTLS bye failed")
1635
2431
1636
@staticmethod
2432
1637
def peer_certificate(session):
2433
"Return the peer's certificate as a bytestring"
2434
try:
2435
cert_type = gnutls.certificate_type_get2(session._c_object,
2436
gnutls.CTYPE_PEERS)
2437
except AttributeError:
2438
cert_type = gnutls.certificate_type_get(session._c_object)
2439
if gnutls.has_rawpk:
2440
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2441
else:
2442
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2443
# If not a valid certificate type...
2444
if cert_type not in valid_cert_types:
2445
logger.info("Cert type %r not in %r", cert_type,
2446
valid_cert_types)
2447
# ...return invalid data
2448
return b""
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
2449
1645
list_size = ctypes.c_uint(1)
2450
cert_list = (gnutls.certificate_get_peers
1646
cert_list = (gnutls.library.functions
1647
.gnutls_certificate_get_peers
2451
1648
(session._c_object, ctypes.byref(list_size)))
2452
1649
if not bool(cert_list) and list_size.value != 0:
2453
raise gnutls.Error("error getting peer certificate")
1650
raise gnutls.errors.GNUTLSError("error getting peer"
1651
" certificate")
2454
1652
if list_size.value == 0:
2455
1653
return None
2456
1654
cert = cert_list[0]
2457
1655
return ctypes.string_at(cert.data, cert.size)
2458
2459
@staticmethod
2460
def key_id(certificate):
2461
"Convert a certificate bytestring to a hexdigit key ID"
2462
# New GnuTLS "datum" with the public key
2463
datum = gnutls.datum_t(
2464
ctypes.cast(ctypes.c_char_p(certificate),
2465
ctypes.POINTER(ctypes.c_ubyte)),
2466
ctypes.c_uint(len(certificate)))
2467
# XXX all these need to be created in the gnutls "module"
2468
# New empty GnuTLS certificate
2469
pubkey = gnutls.pubkey_t()
2470
gnutls.pubkey_init(ctypes.byref(pubkey))
2471
# Import the raw public key into the certificate
2472
gnutls.pubkey_import(pubkey,
2473
ctypes.byref(datum),
2474
gnutls.X509_FMT_DER)
2475
# New buffer for the key ID
2476
buf = ctypes.create_string_buffer(32)
2477
buf_len = ctypes.c_size_t(len(buf))
2478
# Get the key ID from the raw public key into the buffer
2479
gnutls.pubkey_get_key_id(
2480
pubkey,
2481
gnutls.KEYID_USE_SHA256,
2482
ctypes.cast(ctypes.byref(buf),
2483
ctypes.POINTER(ctypes.c_ubyte)),
2484
ctypes.byref(buf_len))
2485
# Deinit the certificate
2486
gnutls.pubkey_deinit(pubkey)
2487
2488
# Convert the buffer to a Python bytestring
2489
key_id = ctypes.string_at(buf, buf_len.value)
2490
# Convert the bytestring to hexadecimal notation
2491
hex_key_id = binascii.hexlify(key_id).upper()
2492
return hex_key_id
2493
1656
2494
1657
@staticmethod
2495
1658
def fingerprint(openpgp):
2496
1659
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2497
1660
# New GnuTLS "datum" with the OpenPGP public key
2498
datum = gnutls.datum_t(
2499
ctypes.cast(ctypes.c_char_p(openpgp),
2500
ctypes.POINTER(ctypes.c_ubyte)),
2501
ctypes.c_uint(len(openpgp)))
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))))
2502
1666
# New empty GnuTLS certificate
2503
crt = gnutls.openpgp_crt_t()
2504
gnutls.openpgp_crt_init(ctypes.byref(crt))
1667
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1668
(gnutls.library.functions
1669
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2505
1670
# Import the OpenPGP public key into the certificate
2506
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2507
gnutls.OPENPGP_FMT_RAW)
1671
(gnutls.library.functions
1672
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1673
gnutls.library.constants
1674
.GNUTLS_OPENPGP_FMT_RAW))
2508
1675
# Verify the self signature in the key
2509
1676
crtverify = ctypes.c_uint()
2510
gnutls.openpgp_crt_verify_self(crt, 0,
2511
ctypes.byref(crtverify))
1677
(gnutls.library.functions
1678
.gnutls_openpgp_crt_verify_self(crt, 0,
1679
ctypes.byref(crtverify)))
2512
1680
if crtverify.value != 0:
2513
gnutls.openpgp_crt_deinit(crt)
2514
raise gnutls.CertificateSecurityError(code
2515
=crtverify.value)
1681
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1682
raise (gnutls.errors.CertificateSecurityError
1683
("Verify failed"))
2516
1684
# New buffer for the fingerprint
2517
1685
buf = ctypes.create_string_buffer(20)
2518
1686
buf_len = ctypes.c_size_t()
2519
1687
# Get the fingerprint from the certificate into the buffer
2520
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2521
ctypes.byref(buf_len))
1688
(gnutls.library.functions
1689
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1690
ctypes.byref(buf_len)))
2522
1691
# Deinit the certificate
2523
gnutls.openpgp_crt_deinit(crt)
1692
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2524
1693
# Convert the buffer to a Python bytestring
2525
1694
fpr = ctypes.string_at(buf, buf_len.value)
2526
1695
# Convert the bytestring to hexadecimal notation
2528
1697
return hex_fpr
2529
1698
2530
1699
2531
class MultiprocessingMixIn:
1700
class MultiprocessingMixIn(object):
2532
1701
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2533
2534
1702
def sub_process_main(self, request, address):
2535
1703
try:
2536
1704
self.finish_request(request, address)
2537
1705
except Exception:
2538
1706
self.handle_error(request, address)
2539
1707
self.close_request(request)
2540
1708
2541
1709
def process_request(self, request, address):
2542
1710
"""Start a new process to process the request."""
2543
proc = multiprocessing.Process(target=self.sub_process_main,
2544
args=(request, address))
1711
proc = multiprocessing.Process(target = self.sub_process_main,
1712
args = (request,
1713
address))
2545
1714
proc.start()
2546
1715
return proc
2547
1716
2548
1717
2549
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1718
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2550
1719
""" adds a pipe to the MixIn """
2551
2552
1720
def process_request(self, request, client_address):
2553
1721
"""Overrides and wraps the original process_request().
2554
1722
2555
1723
This function creates a new pipe in self.pipe
2556
1724
"""
2557
1725
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2558
1726
2559
1727
proc = MultiprocessingMixIn.process_request(self, request,
2560
1728
client_address)
2561
1729
self.child_pipe.close()
2562
1730
self.add_pipe(parent_pipe, proc)
2563
1731
2564
1732
def add_pipe(self, parent_pipe, proc):
2565
1733
"""Dummy function; override as necessary"""
2566
raise NotImplementedError()
1734
raise NotImplementedError
2567
1735
2568
1736
2569
1737
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2570
socketserver.TCPServer):
1738
socketserver.TCPServer, object):
2571
1739
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2572
1740
2573
1741
Attributes:
2574
1742
enabled: Boolean; whether this server is activated yet
2575
1743
interface: None or a network interface name (string)
2576
1744
use_ipv6: Boolean; to use IPv6 or not
2577
1745
"""
2578
2579
1746
def __init__(self, server_address, RequestHandlerClass,
2580
interface=None,
2581
use_ipv6=True,
2582
socketfd=None):
2583
"""If socketfd is set, use that file descriptor instead of
2584
creating a new one with socket.socket().
2585
"""
1747
interface=None, use_ipv6=True):
2586
1748
self.interface = interface
2587
1749
if use_ipv6:
2588
1750
self.address_family = socket.AF_INET6
2589
if socketfd is not None:
2590
# Save the file descriptor
2591
self.socketfd = socketfd
2592
# Save the original socket.socket() function
2593
self.socket_socket = socket.socket
2594
2595
# To implement --socket, we monkey patch socket.socket.
2596
#
2597
# (When socketserver.TCPServer is a new-style class, we
2598
# could make self.socket into a property instead of monkey
2599
# patching socket.socket.)
2600
#
2601
# Create a one-time-only replacement for socket.socket()
2602
@functools.wraps(socket.socket)
2603
def socket_wrapper(*args, **kwargs):
2604
# Restore original function so subsequent calls are
2605
# not affected.
2606
socket.socket = self.socket_socket
2607
del self.socket_socket
2608
# This time only, return a new socket object from the
2609
# saved file descriptor.
2610
return socket.fromfd(self.socketfd, *args, **kwargs)
2611
# Replace socket.socket() function with wrapper
2612
socket.socket = socket_wrapper
2613
# The socketserver.TCPServer.__init__ will call
2614
# socket.socket(), which might be our replacement,
2615
# socket_wrapper(), if socketfd was set.
2616
1751
socketserver.TCPServer.__init__(self, server_address,
2617
1752
RequestHandlerClass)
2618
2619
1753
def server_bind(self):
2620
1754
"""This overrides the normal server_bind() function
2621
1755
to bind to an interface if one was specified, and also NOT to
2622
1756
bind to an address or port if they were not specified."""
2623
global SO_BINDTODEVICE
2624
1757
if self.interface is not None:
2625
1758
if SO_BINDTODEVICE is None:
2626
# Fall back to a hard-coded value which seems to be
2627
# common enough.
2628
logger.warning("SO_BINDTODEVICE not found, trying 25")
2629
SO_BINDTODEVICE = 25
2630
try:
2631
self.socket.setsockopt(
2632
socket.SOL_SOCKET, SO_BINDTODEVICE,
2633
(self.interface + "\0").encode("utf-8"))
2634
except socket.error as error:
2635
if error.errno == errno.EPERM:
2636
logger.error("No permission to bind to"
2637
" interface %s", self.interface)
2638
elif error.errno == errno.ENOPROTOOPT:
2639
logger.error("SO_BINDTODEVICE not available;"
2640
" cannot bind to interface %s",
2641
self.interface)
2642
elif error.errno == errno.ENODEV:
2643
logger.error("Interface %s does not exist,"
2644
" cannot bind", self.interface)
2645
else:
2646
raise
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
2647
1779
# Only bind(2) the socket if we really need to.
2648
1780
if self.server_address[0] or self.server_address[1]:
2649
if self.server_address[1]:
2650
self.allow_reuse_address = True
2651
1781
if not self.server_address[0]:
2652
1782
if self.address_family == socket.AF_INET6:
2653
any_address = "::" # in6addr_any
1783
any_address = "::" # in6addr_any
2654
1784
else:
2655
any_address = "0.0.0.0" # INADDR_ANY
1785
any_address = socket.INADDR_ANY
2656
1786
self.server_address = (any_address,
2657
1787
self.server_address[1])
2658
1788
elif not self.server_address[1]:
2659
self.server_address = (self.server_address[0], 0)
1789
self.server_address = (self.server_address[0],
1790
0)
2660
1791
# if self.interface:
2661
1792
# self.server_address = (self.server_address[0],
2662
1793
# 0, # port
2668
1799
2669
1800
class MandosServer(IPv6_TCPServer):
2670
1801
"""Mandos server.
2671
1802
2672
1803
Attributes:
2673
1804
clients: set of Client objects
2674
1805
gnutls_priority GnuTLS priority string
2675
1806
use_dbus: Boolean; to emit D-Bus signals or not
2676
2677
Assumes a GLib.MainLoop event loop.
1807
1808
Assumes a gobject.MainLoop event loop.
2678
1809
"""
2679
2680
1810
def __init__(self, server_address, RequestHandlerClass,
2681
interface=None,
2682
use_ipv6=True,
2683
clients=None,
2684
gnutls_priority=None,
2685
use_dbus=True,
2686
socketfd=None):
1811
interface=None, use_ipv6=True, clients=None,
1812
gnutls_priority=None, use_dbus=True):
2687
1813
self.enabled = False
2688
1814
self.clients = clients
2689
1815
if self.clients is None:
2692
1818
self.gnutls_priority = gnutls_priority
2693
1819
IPv6_TCPServer.__init__(self, server_address,
2694
1820
RequestHandlerClass,
2695
interface=interface,
2696
use_ipv6=use_ipv6,
2697
socketfd=socketfd)
2698
1821
interface = interface,
1822
use_ipv6 = use_ipv6)
2699
1823
def server_activate(self):
2700
1824
if self.enabled:
2701
1825
return socketserver.TCPServer.server_activate(self)
2702
1826
2703
1827
def enable(self):
2704
1828
self.enabled = True
2705
1829
2706
1830
def add_pipe(self, parent_pipe, proc):
2707
1831
# Call "handle_ipc" for both data and EOF events
2708
GLib.io_add_watch(
2709
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2710
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2711
functools.partial(self.handle_ipc,
2712
parent_pipe=parent_pipe,
2713
proc=proc))
2714
2715
def handle_ipc(self, source, condition,
2716
parent_pipe=None,
2717
proc=None,
2718
client_object=None):
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)
2719
1855
# error, or the other end of multiprocessing.Pipe has closed
2720
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1856
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2721
1857
# Wait for other process to exit
2722
1858
proc.join()
2723
1859
return False
2724
1860
2725
1861
# Read a request from the child
2726
1862
request = parent_pipe.recv()
2727
1863
command = request[0]
2728
1864
2729
1865
if command == 'init':
2730
key_id = request[1].decode("ascii")
2731
fpr = request[2].decode("ascii")
2732
address = request[3]
2733
2734
for c in self.clients.values():
2735
if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"
2736
"27AE41E4649B934CA495991B7852B855"):
2737
continue
2738
if key_id and c.key_id == key_id:
2739
client = c
2740
break
2741
if fpr and c.fingerprint == fpr:
1866
fpr = request[1]
1867
address = request[2]
1868
1869
for c in self.clients.itervalues():
1870
if c.fingerprint == fpr:
2742
1871
client = c
2743
1872
break
2744
1873
else:
2745
logger.info("Client not found for key ID: %s, address"
2746
": %s", key_id or fpr, address)
1874
logger.info("Client not found for fingerprint: %s, ad"
1875
"dress: %s", fpr, address)
2747
1876
if self.use_dbus:
2748
1877
# Emit D-Bus signal
2749
mandos_dbus_service.ClientNotFound(key_id or fpr,
1878
mandos_dbus_service.ClientNotFound(fpr,
2750
1879
address[0])
2751
1880
parent_pipe.send(False)
2752
1881
return False
2753
2754
GLib.io_add_watch(
2755
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2756
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2757
functools.partial(self.handle_ipc,
2758
parent_pipe=parent_pipe,
2759
proc=proc,
2760
client_object=client))
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))
2761
1891
parent_pipe.send(True)
2762
1892
# remove the old hook in favor of the new above hook on
2763
1893
# same fileno
2766
1896
funcname = request[1]
2767
1897
args = request[2]
2768
1898
kwargs = request[3]
2769
1899
2770
1900
parent_pipe.send(('data', getattr(client_object,
2771
1901
funcname)(*args,
2772
**kwargs)))
2773
1902
**kwargs)))
1903
2774
1904
if command == 'getattr':
2775
1905
attrname = request[1]
2776
if isinstance(client_object.__getattribute__(attrname),
2777
collections.abc.Callable):
2778
parent_pipe.send(('function', ))
1906
if callable(client_object.__getattribute__(attrname)):
1907
parent_pipe.send(('function',))
2779
1908
else:
2780
parent_pipe.send((
2781
'data', client_object.__getattribute__(attrname)))
2782
1909
parent_pipe.send(('data', client_object
1910
.__getattribute__(attrname)))
1911
2783
1912
if command == 'setattr':
2784
1913
attrname = request[1]
2785
1914
value = request[2]
2786
1915
setattr(client_object, attrname, value)
2787
1916
2788
1917
return True
2789
1918
2790
1919
2791
def rfc3339_duration_to_delta(duration):
2792
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2793
2794
>>> timedelta = datetime.timedelta
2795
>>> rfc3339_duration_to_delta("P7D") == timedelta(7)
2796
True
2797
>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)
2798
True
2799
>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)
2800
True
2801
>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)
2802
True
2803
>>> rfc3339_duration_to_delta("P1W") == timedelta(7)
2804
True
2805
>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)
2806
True
2807
>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)
2808
True
2809
>>> del timedelta
2810
"""
2811
2812
# Parsing an RFC 3339 duration with regular expressions is not
2813
# possible - there would have to be multiple places for the same
2814
# values, like seconds. The current code, while more esoteric, is
2815
# cleaner without depending on a parsing library. If Python had a
2816
# built-in library for parsing we would use it, but we'd like to
2817
# avoid excessive use of external libraries.
2818
2819
# New type for defining tokens, syntax, and semantics all-in-one
2820
Token = collections.namedtuple("Token", (
2821
"regexp", # To match token; if "value" is not None, must have
2822
# a "group" containing digits
2823
"value", # datetime.timedelta or None
2824
"followers")) # Tokens valid after this token
2825
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2826
# the "duration" ABNF definition in RFC 3339, Appendix A.
2827
token_end = Token(re.compile(r"$"), None, frozenset())
2828
token_second = Token(re.compile(r"(\d+)S"),
2829
datetime.timedelta(seconds=1),
2830
frozenset((token_end, )))
2831
token_minute = Token(re.compile(r"(\d+)M"),
2832
datetime.timedelta(minutes=1),
2833
frozenset((token_second, token_end)))
2834
token_hour = Token(re.compile(r"(\d+)H"),
2835
datetime.timedelta(hours=1),
2836
frozenset((token_minute, token_end)))
2837
token_time = Token(re.compile(r"T"),
2838
None,
2839
frozenset((token_hour, token_minute,
2840
token_second)))
2841
token_day = Token(re.compile(r"(\d+)D"),
2842
datetime.timedelta(days=1),
2843
frozenset((token_time, token_end)))
2844
token_month = Token(re.compile(r"(\d+)M"),
2845
datetime.timedelta(weeks=4),
2846
frozenset((token_day, token_end)))
2847
token_year = Token(re.compile(r"(\d+)Y"),
2848
datetime.timedelta(weeks=52),
2849
frozenset((token_month, token_end)))
2850
token_week = Token(re.compile(r"(\d+)W"),
2851
datetime.timedelta(weeks=1),
2852
frozenset((token_end, )))
2853
token_duration = Token(re.compile(r"P"), None,
2854
frozenset((token_year, token_month,
2855
token_day, token_time,
2856
token_week)))
2857
# Define starting values:
2858
# Value so far
2859
value = datetime.timedelta()
2860
found_token = None
2861
# Following valid tokens
2862
followers = frozenset((token_duration, ))
2863
# String left to parse
2864
s = duration
2865
# Loop until end token is found
2866
while found_token is not token_end:
2867
# Search for any currently valid tokens
2868
for token in followers:
2869
match = token.regexp.match(s)
2870
if match is not None:
2871
# Token found
2872
if token.value is not None:
2873
# Value found, parse digits
2874
factor = int(match.group(1), 10)
2875
# Add to value so far
2876
value += factor * token.value
2877
# Strip token from string
2878
s = token.regexp.sub("", s, 1)
2879
# Go to found token
2880
found_token = token
2881
# Set valid next tokens
2882
followers = found_token.followers
2883
break
2884
else:
2885
# No currently valid tokens were found
2886
raise ValueError("Invalid RFC 3339 duration: {!r}"
2887
.format(duration))
2888
# End token found
2889
return value
2890
2891
2892
1920
def string_to_delta(interval):
2893
1921
"""Parse a string and return a datetime.timedelta
2894
2895
>>> string_to_delta('7d') == datetime.timedelta(7)
2896
True
2897
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2898
True
2899
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2900
True
2901
>>> string_to_delta('24h') == datetime.timedelta(1)
2902
True
2903
>>> string_to_delta('1w') == datetime.timedelta(7)
2904
True
2905
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2906
True
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)
2907
1935
"""
2908
2909
try:
2910
return rfc3339_duration_to_delta(interval)
2911
except ValueError:
2912
pass
2913
2914
1936
timevalue = datetime.timedelta(0)
2915
1937
for s in interval.split():
2916
1938
try:
2917
suffix = s[-1]
1939
suffix = unicode(s[-1])
2918
1940
value = int(s[:-1])
2919
1941
if suffix == "d":
2920
1942
delta = datetime.timedelta(value)
2927
1949
elif suffix == "w":
2928
1950
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2929
1951
else:
2930
raise ValueError("Unknown suffix {!r}".format(suffix))
2931
except IndexError as e:
1952
raise ValueError("Unknown suffix %r" % suffix)
1953
except (ValueError, IndexError) as e:
2932
1954
raise ValueError(*(e.args))
2933
1955
timevalue += delta
2934
1956
return timevalue
2935
1957
2936
1958
2937
def daemon(nochdir=False, noclose=False):
1959
def daemon(nochdir = False, noclose = False):
2938
1960
"""See daemon(3). Standard BSD Unix function.
2939
1961
2940
1962
This should really exist as os.daemon, but it doesn't (yet)."""
2941
1963
if os.fork():
2942
1964
sys.exit()
2947
1969
sys.exit()
2948
1970
if not noclose:
2949
1971
# Close all standard open file descriptors
2950
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1972
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2951
1973
if not stat.S_ISCHR(os.fstat(null).st_mode):
2952
1974
raise OSError(errno.ENODEV,
2953
"{} not a character device"
2954
.format(os.devnull))
1975
"%s not a character device"
1976
% os.path.devnull)
2955
1977
os.dup2(null, sys.stdin.fileno())
2956
1978
os.dup2(null, sys.stdout.fileno())
2957
1979
os.dup2(null, sys.stderr.fileno())
2960
1982
2961
1983
2962
1984
def main():
2963
1985
2964
1986
##################################################################
2965
1987
# Parsing of options, both command line and config file
2966
1988
2967
1989
parser = argparse.ArgumentParser()
2968
1990
parser.add_argument("-v", "--version", action="version",
2969
version="%(prog)s {}".format(version),
1991
version = "%%(prog)s %s" % version,
2970
1992
help="show version number and exit")
2971
1993
parser.add_argument("-i", "--interface", metavar="IF",
2972
1994
help="Bind to interface IF")
2978
2000
help="Run self-test")
2979
2001
parser.add_argument("--debug", action="store_true",
2980
2002
help="Debug mode; run in foreground and log"
2981
" to terminal", default=None)
2003
" to terminal")
2982
2004
parser.add_argument("--debuglevel", metavar="LEVEL",
2983
2005
help="Debug level for stdout output")
2984
2006
parser.add_argument("--priority", help="GnuTLS"
2991
2013
" files")
2992
2014
parser.add_argument("--no-dbus", action="store_false",
2993
2015
dest="use_dbus", help="Do not provide D-Bus"
2994
" system bus interface", default=None)
2016
" system bus interface")
2995
2017
parser.add_argument("--no-ipv6", action="store_false",
2996
dest="use_ipv6", help="Do not use IPv6",
2997
default=None)
2018
dest="use_ipv6", help="Do not use IPv6")
2998
2019
parser.add_argument("--no-restore", action="store_false",
2999
2020
dest="restore", help="Do not restore stored"
3000
" state", default=None)
3001
parser.add_argument("--socket", type=int,
3002
help="Specify a file descriptor to a network"
3003
" socket to use instead of creating one")
2021
" state")
3004
2022
parser.add_argument("--statedir", metavar="DIR",
3005
2023
help="Directory to save/restore state in")
3006
parser.add_argument("--foreground", action="store_true",
3007
help="Run in foreground", default=None)
3008
parser.add_argument("--no-zeroconf", action="store_false",
3009
dest="zeroconf", help="Do not use Zeroconf",
3010
default=None)
3011
2024
3012
2025
options = parser.parse_args()
3013
2026
2027
if options.check:
2028
import doctest
2029
doctest.testmod()
2030
sys.exit()
2031
3014
2032
# Default values for config file for server-global settings
3015
if gnutls.has_rawpk:
3016
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3017
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3018
else:
3019
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3020
":+SIGN-DSA-SHA256")
3021
server_defaults = {"interface": "",
3022
"address": "",
3023
"port": "",
3024
"debug": "False",
3025
"priority": priority,
3026
"servicename": "Mandos",
3027
"use_dbus": "True",
3028
"use_ipv6": "True",
3029
"debuglevel": "",
3030
"restore": "True",
3031
"socket": "",
3032
"statedir": "/var/lib/mandos",
3033
"foreground": "False",
3034
"zeroconf": "True",
3035
}
3036
del priority
3037
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
3038
2047
# Parse config file for server-global settings
3039
server_config = configparser.ConfigParser(server_defaults)
2048
server_config = configparser.SafeConfigParser(server_defaults)
3040
2049
del server_defaults
3041
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3042
# Convert the ConfigParser object to a dict
2050
server_config.read(os.path.join(options.configdir,
2051
"mandos.conf"))
2052
# Convert the SafeConfigParser object to a dict
3043
2053
server_settings = server_config.defaults()
3044
2054
# Use the appropriate methods on the non-string config options
3045
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3046
"foreground", "zeroconf"):
2055
for option in ("debug", "use_dbus", "use_ipv6"):
3047
2056
server_settings[option] = server_config.getboolean("DEFAULT",
3048
2057
option)
3049
2058
if server_settings["port"]:
3050
2059
server_settings["port"] = server_config.getint("DEFAULT",
3051
2060
"port")
3052
if server_settings["socket"]:
3053
server_settings["socket"] = server_config.getint("DEFAULT",
3054
"socket")
3055
# Later, stdin will, and stdout and stderr might, be dup'ed
3056
# over with an opened os.devnull. But we don't want this to
3057
# happen with a supplied network socket.
3058
if 0 <= server_settings["socket"] <= 2:
3059
server_settings["socket"] = os.dup(server_settings
3060
["socket"])
3061
2061
del server_config
3062
2062
3063
2063
# Override the settings from the config file with command line
3064
2064
# options, if set.
3065
2065
for option in ("interface", "address", "port", "debug",
3066
"priority", "servicename", "configdir", "use_dbus",
3067
"use_ipv6", "debuglevel", "restore", "statedir",
3068
"socket", "foreground", "zeroconf"):
2066
"priority", "servicename", "configdir",
2067
"use_dbus", "use_ipv6", "debuglevel", "restore",
2068
"statedir"):
3069
2069
value = getattr(options, option)
3070
2070
if value is not None:
3071
2071
server_settings[option] = value
3072
2072
del options
3073
2073
# Force all strings to be unicode
3074
2074
for option in server_settings.keys():
3075
if isinstance(server_settings[option], bytes):
3076
server_settings[option] = (server_settings[option]
3077
.decode("utf-8"))
3078
# Force all boolean options to be boolean
3079
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3080
"foreground", "zeroconf"):
3081
server_settings[option] = bool(server_settings[option])
3082
# Debug implies foreground
3083
if server_settings["debug"]:
3084
server_settings["foreground"] = True
2075
if type(server_settings[option]) is str:
2076
server_settings[option] = unicode(server_settings[option])
3085
2077
# Now we have our good server settings in "server_settings"
3086
2078
3087
2079
##################################################################
3088
3089
if (not server_settings["zeroconf"]
3090
and not (server_settings["port"]
3091
or server_settings["socket"] != "")):
3092
parser.error("Needs port or socket to work without Zeroconf")
3093
2080
3094
2081
# For convenience
3095
2082
debug = server_settings["debug"]
3096
2083
debuglevel = server_settings["debuglevel"]
3098
2085
use_ipv6 = server_settings["use_ipv6"]
3099
2086
stored_state_path = os.path.join(server_settings["statedir"],
3100
2087
stored_state_file)
3101
foreground = server_settings["foreground"]
3102
zeroconf = server_settings["zeroconf"]
3103
2088
3104
2089
if debug:
3105
2090
initlogger(debug, logging.DEBUG)
3106
2091
else:
3109
2094
else:
3110
2095
level = getattr(logging, debuglevel.upper())
3111
2096
initlogger(debug, level)
3112
2097
3113
2098
if server_settings["servicename"] != "Mandos":
3114
syslogger.setFormatter(
3115
logging.Formatter('Mandos ({}) [%(process)d]:'
3116
' %(levelname)s: %(message)s'.format(
3117
server_settings["servicename"])))
3118
2099
syslogger.setFormatter(logging.Formatter
2100
('Mandos (%s) [%%(process)d]:'
2101
' %%(levelname)s: %%(message)s'
2102
% server_settings["servicename"]))
2103
3119
2104
# Parse config file with clients
3120
client_config = configparser.ConfigParser(Client.client_defaults)
2105
client_config = configparser.SafeConfigParser(Client
2106
.client_defaults)
3121
2107
client_config.read(os.path.join(server_settings["configdir"],
3122
2108
"clients.conf"))
3123
2109
3124
2110
global mandos_dbus_service
3125
2111
mandos_dbus_service = None
3126
3127
socketfd = None
3128
if server_settings["socket"] != "":
3129
socketfd = server_settings["socket"]
3130
tcp_server = MandosServer(
3131
(server_settings["address"], server_settings["port"]),
3132
ClientHandler,
3133
interface=(server_settings["interface"] or None),
3134
use_ipv6=use_ipv6,
3135
gnutls_priority=server_settings["priority"],
3136
use_dbus=use_dbus,
3137
socketfd=socketfd)
3138
if not foreground:
3139
pidfilename = "/run/mandos.pid"
3140
if not os.path.isdir("/run/."):
3141
pidfilename = "/var/run/mandos.pid"
3142
pidfile = None
3143
try:
3144
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3145
except IOError as e:
3146
logger.error("Could not open file %r", pidfilename,
3147
exc_info=e)
3148
3149
for name, group in (("_mandos", "_mandos"),
3150
("mandos", "mandos"),
3151
("nobody", "nogroup")):
3152
try:
3153
uid = pwd.getpwnam(name).pw_uid
3154
gid = pwd.getpwnam(group).pw_gid
3155
break
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
3156
2136
except KeyError:
3157
continue
3158
else:
3159
uid = 65534
3160
gid = 65534
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
3161
2143
try:
3162
2144
os.setgid(gid)
3163
2145
os.setuid(uid)
3164
if debug:
3165
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3166
gid))
3167
2146
except OSError as error:
3168
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3169
.format(uid, gid, os.strerror(error.errno)))
3170
if error.errno != errno.EPERM:
3171
raise
3172
2147
if error[0] != errno.EPERM:
2148
raise error
2149
3173
2150
if debug:
3174
2151
# Enable all possible GnuTLS debugging
3175
2152
3176
2153
# "Use a log level over 10 to enable all debugging options."
3177
2154
# - GnuTLS manual
3178
gnutls.global_set_log_level(11)
3179
3180
@gnutls.log_func
2155
gnutls.library.functions.gnutls_global_set_log_level(11)
2156
2157
@gnutls.library.types.gnutls_log_func
3181
2158
def debug_gnutls(level, string):
3182
2159
logger.debug("GnuTLS: %s", string[:-1])
3183
3184
gnutls.global_set_log_function(debug_gnutls)
3185
2160
2161
(gnutls.library.functions
2162
.gnutls_global_set_log_function(debug_gnutls))
2163
3186
2164
# Redirect stdin so all checkers get /dev/null
3187
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2165
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3188
2166
os.dup2(null, sys.stdin.fileno())
3189
2167
if null > 2:
3190
2168
os.close(null)
3191
2169
3192
2170
# Need to fork before connecting to D-Bus
3193
if not foreground:
2171
if not debug:
3194
2172
# Close all input and output, do double fork, etc.
3195
2173
daemon()
3196
3197
if gi.version_info < (3, 10, 2):
3198
# multiprocessing will use threads, so before we use GLib we
3199
# need to inform GLib that threads will be used.
3200
GLib.threads_init()
3201
2174
2175
gobject.threads_init()
2176
3202
2177
global main_loop
3203
2178
# From the Avahi example code
3204
DBusGMainLoop(set_as_default=True)
3205
main_loop = GLib.MainLoop()
2179
DBusGMainLoop(set_as_default=True )
2180
main_loop = gobject.MainLoop()
3206
2181
bus = dbus.SystemBus()
3207
2182
# End of Avahi example code
3208
2183
if use_dbus:
3209
2184
try:
3210
2185
bus_name = dbus.service.BusName("se.recompile.Mandos",
3211
bus,
3212
do_not_queue=True)
3213
old_bus_name = dbus.service.BusName(
3214
"se.bsnet.fukt.Mandos", bus,
3215
do_not_queue=True)
3216
except dbus.exceptions.DBusException as e:
3217
logger.error("Disabling D-Bus:", exc_info=e)
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")
3218
2192
use_dbus = False
3219
2193
server_settings["use_dbus"] = False
3220
2194
tcp_server.use_dbus = False
3221
if zeroconf:
3222
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3223
service = AvahiServiceToSyslog(
3224
name=server_settings["servicename"],
3225
servicetype="_mandos._tcp",
3226
protocol=protocol,
3227
bus=bus)
3228
if server_settings["interface"]:
3229
service.interface = if_nametoindex(
3230
server_settings["interface"].encode("utf-8"))
3231
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
3232
2204
global multiprocessing_manager
3233
2205
multiprocessing_manager = multiprocessing.Manager()
3234
2206
3235
2207
client_class = Client
3236
2208
if use_dbus:
3237
client_class = functools.partial(ClientDBus, bus=bus)
3238
2209
client_class = functools.partial(ClientDBusTransitional,
2210
bus = bus)
2211
3239
2212
client_settings = Client.config_parser(client_config)
3240
2213
old_client_settings = {}
3241
2214
clients_data = {}
3242
3243
# This is used to redirect stdout and stderr for checker processes
3244
global wnull
3245
wnull = open(os.devnull, "w") # A writable /dev/null
3246
# Only used if server is running in foreground but not in debug
3247
# mode
3248
if debug or not foreground:
3249
wnull.close()
3250
2215
3251
2216
# Get client data and settings from last running state.
3252
2217
if server_settings["restore"]:
3253
2218
try:
3254
2219
with open(stored_state_path, "rb") as stored_state:
3255
if sys.version_info.major == 2:
3256
clients_data, old_client_settings = pickle.load(
3257
stored_state)
3258
else:
3259
bytes_clients_data, bytes_old_client_settings = (
3260
pickle.load(stored_state, encoding="bytes"))
3261
# Fix bytes to strings
3262
# clients_data
3263
# .keys()
3264
clients_data = {(key.decode("utf-8")
3265
if isinstance(key, bytes)
3266
else key): value
3267
for key, value in
3268
bytes_clients_data.items()}
3269
del bytes_clients_data
3270
for key in clients_data:
3271
value = {(k.decode("utf-8")
3272
if isinstance(k, bytes) else k): v
3273
for k, v in
3274
clients_data[key].items()}
3275
clients_data[key] = value
3276
# .client_structure
3277
value["client_structure"] = [
3278
(s.decode("utf-8")
3279
if isinstance(s, bytes)
3280
else s) for s in
3281
value["client_structure"]]
3282
# .name, .host, and .checker_command
3283
for k in ("name", "host", "checker_command"):
3284
if isinstance(value[k], bytes):
3285
value[k] = value[k].decode("utf-8")
3286
if "key_id" not in value:
3287
value["key_id"] = ""
3288
elif "fingerprint" not in value:
3289
value["fingerprint"] = ""
3290
# old_client_settings
3291
# .keys()
3292
old_client_settings = {
3293
(key.decode("utf-8")
3294
if isinstance(key, bytes)
3295
else key): value
3296
for key, value in
3297
bytes_old_client_settings.items()}
3298
del bytes_old_client_settings
3299
# .host and .checker_command
3300
for value in old_client_settings.values():
3301
for attribute in ("host", "checker_command"):
3302
if isinstance(value[attribute], bytes):
3303
value[attribute] = (value[attribute]
3304
.decode("utf-8"))
2220
clients_data, old_client_settings = (pickle.load
2221
(stored_state))
3305
2222
os.remove(stored_state_path)
3306
2223
except IOError as e:
3307
if e.errno == errno.ENOENT:
3308
logger.warning("Could not load persistent state:"
3309
" {}".format(os.strerror(e.errno)))
3310
else:
3311
logger.critical("Could not load persistent state:",
3312
exc_info=e)
2224
logger.warning("Could not load persistent state: {0}"
2225
.format(e))
2226
if e.errno != errno.ENOENT:
3313
2227
raise
3314
2228
except EOFError as e:
3315
2229
logger.warning("Could not load persistent state: "
3316
"EOFError:",
3317
exc_info=e)
3318
2230
"EOFError: {0}".format(e))
2231
3319
2232
with PGPEngine() as pgp:
3320
for client_name, client in clients_data.items():
3321
# Skip removed clients
3322
if client_name not in client_settings:
3323
continue
3324
2233
for client_name, client in clients_data.iteritems():
3325
2234
# Decide which value to use after restoring saved state.
3326
2235
# We have three different values: Old config file,
3327
2236
# new config file, and saved state.
3332
2241
# For each value in new config, check if it
3333
2242
# differs from the old config value (Except for
3334
2243
# the "secret" attribute)
3335
if (name != "secret"
3336
and (value !=
3337
old_client_settings[client_name][name])):
2244
if (name != "secret" and
2245
value != old_client_settings[client_name]
2246
[name]):
3338
2247
client[name] = value
3339
2248
except KeyError:
3340
2249
pass
3341
2250
3342
2251
# Clients who has passed its expire date can still be
3343
# enabled if its last checker was successful. A Client
3344
# whose checker succeeded before we stored its state is
3345
# assumed to have successfully run all checkers during
3346
# downtime.
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.
3347
2255
if client["enabled"]:
3348
2256
if datetime.datetime.utcnow() >= client["expires"]:
3349
2257
if not client["last_checked_ok"]:
3350
2258
logger.warning(
3351
"disabling client {} - Client never "
3352
"performed a successful checker".format(
3353
client_name))
2259
"disabling client {0} - Client never "
2260
"performed a successfull checker"
2261
.format(client["name"]))
3354
2262
client["enabled"] = False
3355
2263
elif client["last_checker_status"] != 0:
3356
2264
logger.warning(
3357
"disabling client {} - Client last"
3358
" checker failed with error code"
3359
" {}".format(
3360
client_name,
3361
client["last_checker_status"]))
2265
"disabling client {0} - Client "
2266
"last checker failed with error code {1}"
2267
.format(client["name"],
2268
client["last_checker_status"]))
3362
2269
client["enabled"] = False
3363
2270
else:
3364
client["expires"] = (
3365
datetime.datetime.utcnow()
3366
+ client["timeout"])
2271
client["expires"] = (datetime.datetime
2272
.utcnow()
2273
+ client["timeout"])
3367
2274
logger.debug("Last checker succeeded,"
3368
" keeping {} enabled".format(
3369
client_name))
2275
" keeping {0} enabled"
2276
.format(client["name"]))
3370
2277
try:
3371
client["secret"] = pgp.decrypt(
3372
client["encrypted_secret"],
3373
client_settings[client_name]["secret"])
2278
client["secret"] = (
2279
pgp.decrypt(client["encrypted_secret"],
2280
client_settings[client_name]
2281
["secret"]))
3374
2282
except PGPError:
3375
2283
# If decryption fails, we use secret from new settings
3376
logger.debug("Failed to decrypt {} old secret".format(
3377
client_name))
3378
client["secret"] = (client_settings[client_name]
3379
["secret"])
2284
logger.debug("Failed to decrypt {0} old secret"
2285
.format(client_name))
2286
client["secret"] = (
2287
client_settings[client_name]["secret"])
3380
2288
2289
3381
2290
# Add/remove clients based on new changes made to config
3382
2291
for client_name in (set(old_client_settings)
3383
2292
- set(client_settings)):
3386
2295
- set(old_client_settings)):
3387
2296
clients_data[client_name] = client_settings[client_name]
3388
2297
3389
# Create all client objects
3390
for client_name, client in clients_data.items():
2298
# Create clients all clients
2299
for client_name, client in clients_data.iteritems():
3391
2300
tcp_server.clients[client_name] = client_class(
3392
name=client_name,
3393
settings=client,
3394
server_settings=server_settings)
3395
2301
name = client_name, settings = client)
2302
3396
2303
if not tcp_server.clients:
3397
2304
logger.warning("No clients defined")
3398
3399
if not foreground:
3400
if pidfile is not None:
3401
pid = os.getpid()
3402
try:
3403
with pidfile:
3404
print(pid, file=pidfile)
3405
except IOError:
3406
logger.error("Could not write to file %r with PID %d",
3407
pidfilename, pid)
3408
del pidfile
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
3409
2318
del pidfilename
3410
3411
for termsig in (signal.SIGHUP, signal.SIGTERM):
3412
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3413
lambda: main_loop.quit() and False)
3414
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
3415
2324
if use_dbus:
3416
3417
@alternate_dbus_interfaces(
3418
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3419
class MandosDBusService(DBusObjectWithObjectManager):
2325
class MandosDBusService(dbus.service.Object):
3420
2326
"""A D-Bus proxy object"""
3421
3422
2327
def __init__(self):
3423
2328
dbus.service.Object.__init__(self, bus, "/")
3424
3425
2329
_interface = "se.recompile.Mandos"
3426
2330
3427
2331
@dbus.service.signal(_interface, signature="o")
3428
2332
def ClientAdded(self, objpath):
3429
2333
"D-Bus signal"
3430
2334
pass
3431
2335
3432
2336
@dbus.service.signal(_interface, signature="ss")
3433
def ClientNotFound(self, key_id, address):
2337
def ClientNotFound(self, fingerprint, address):
3434
2338
"D-Bus signal"
3435
2339
pass
3436
3437
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3438
"true"})
2340
3439
2341
@dbus.service.signal(_interface, signature="os")
3440
2342
def ClientRemoved(self, objpath, name):
3441
2343
"D-Bus signal"
3442
2344
pass
3443
3444
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3445
"true"})
2345
3446
2346
@dbus.service.method(_interface, out_signature="ao")
3447
2347
def GetAllClients(self):
3448
2348
"D-Bus method"
3449
return dbus.Array(c.dbus_object_path for c in
3450
tcp_server.clients.values())
3451
3452
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3453
"true"})
2349
return dbus.Array(c.dbus_object_path
2350
for c in
2351
tcp_server.clients.itervalues())
2352
3454
2353
@dbus.service.method(_interface,
3455
2354
out_signature="a{oa{sv}}")
3456
2355
def GetAllClientsWithProperties(self):
3457
2356
"D-Bus method"
3458
2357
return dbus.Dictionary(
3459
{c.dbus_object_path: c.GetAll(
3460
"se.recompile.Mandos.Client")
3461
for c in tcp_server.clients.values()},
2358
((c.dbus_object_path, c.GetAll(""))
2359
for c in tcp_server.clients.itervalues()),
3462
2360
signature="oa{sv}")
3463
2361
3464
2362
@dbus.service.method(_interface, in_signature="o")
3465
2363
def RemoveClient(self, object_path):
3466
2364
"D-Bus method"
3467
for c in tcp_server.clients.values():
2365
for c in tcp_server.clients.itervalues():
3468
2366
if c.dbus_object_path == object_path:
3469
2367
del tcp_server.clients[c.name]
3470
2368
c.remove_from_connection()
3471
# Don't signal the disabling
2369
# Don't signal anything except ClientRemoved
3472
2370
c.disable(quiet=True)
3473
# Emit D-Bus signal for removal
3474
self.client_removed_signal(c)
2371
# Emit D-Bus signal
2372
self.ClientRemoved(object_path, c.name)
3475
2373
return
3476
2374
raise KeyError(object_path)
3477
2375
3478
2376
del _interface
3479
3480
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3481
out_signature="a{oa{sa{sv}}}")
3482
def GetManagedObjects(self):
3483
"""D-Bus method"""
3484
return dbus.Dictionary(
3485
{client.dbus_object_path:
3486
dbus.Dictionary(
3487
{interface: client.GetAll(interface)
3488
for interface in
3489
client._get_all_interface_names()})
3490
for client in tcp_server.clients.values()})
3491
3492
def client_added_signal(self, client):
3493
"""Send the new standard signal and the old signal"""
3494
if use_dbus:
3495
# New standard signal
3496
self.InterfacesAdded(
3497
client.dbus_object_path,
3498
dbus.Dictionary(
3499
{interface: client.GetAll(interface)
3500
for interface in
3501
client._get_all_interface_names()}))
3502
# Old signal
3503
self.ClientAdded(client.dbus_object_path)
3504
3505
def client_removed_signal(self, client):
3506
"""Send the new standard signal and the old signal"""
3507
if use_dbus:
3508
# New standard signal
3509
self.InterfacesRemoved(
3510
client.dbus_object_path,
3511
client._get_all_interface_names())
3512
# Old signal
3513
self.ClientRemoved(client.dbus_object_path,
3514
client.name)
3515
3516
mandos_dbus_service = MandosDBusService()
3517
3518
# Save modules to variables to exempt the modules from being
3519
# unloaded before the function registered with atexit() is run.
3520
mp = multiprocessing
3521
wn = wnull
3522
2377
2378
class MandosDBusServiceTransitional(MandosDBusService):
2379
__metaclass__ = AlternateDBusNamesMetaclass
2380
mandos_dbus_service = MandosDBusServiceTransitional()
2381
3523
2382
def cleanup():
3524
2383
"Cleanup function; run on exit"
3525
if zeroconf:
3526
service.cleanup()
3527
3528
mp.active_children()
3529
wn.close()
2384
service.cleanup()
2385
2386
multiprocessing.active_children()
3530
2387
if not (tcp_server.clients or client_settings):
3531
2388
return
3532
2389
3533
2390
# Store client before exiting. Secrets are encrypted with key
3534
2391
# based on what config file has. If config file is
3535
2392
# removed/edited, old secret will thus be unrecovable.
3536
2393
clients = {}
3537
2394
with PGPEngine() as pgp:
3538
for client in tcp_server.clients.values():
2395
for client in tcp_server.clients.itervalues():
3539
2396
key = client_settings[client.name]["secret"]
3540
2397
client.encrypted_secret = pgp.encrypt(client.secret,
3541
2398
key)
3542
2399
client_dict = {}
3543
2400
3544
2401
# A list of attributes that can not be pickled
3545
2402
# + secret.
3546
exclude = {"bus", "changedstate", "secret",
3547
"checker", "server_settings"}
3548
for name, typ in inspect.getmembers(dbus.service
3549
.Object):
2403
exclude = set(("bus", "changedstate", "secret",
2404
"checker"))
2405
for name, typ in (inspect.getmembers
2406
(dbus.service.Object)):
3550
2407
exclude.add(name)
3551
2408
3552
2409
client_dict["encrypted_secret"] = (client
3553
2410
.encrypted_secret)
3554
2411
for attr in client.client_structure:
3555
2412
if attr not in exclude:
3556
2413
client_dict[attr] = getattr(client, attr)
3557
2414
3558
2415
clients[client.name] = client_dict
3559
2416
del client_settings[client.name]["secret"]
3560
2417
3561
2418
try:
3562
with tempfile.NamedTemporaryFile(
3563
mode='wb',
3564
suffix=".pickle",
3565
prefix='clients-',
3566
dir=os.path.dirname(stored_state_path),
3567
delete=False) as stored_state:
3568
pickle.dump((clients, client_settings), stored_state,
3569
protocol=2)
3570
tempname = stored_state.name
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)
3571
2425
os.rename(tempname, stored_state_path)
3572
2426
except (IOError, OSError) as e:
2427
logger.warning("Could not save persistent state: {0}"
2428
.format(e))
3573
2429
if not debug:
3574
2430
try:
3575
2431
os.remove(tempname)
3576
2432
except NameError:
3577
2433
pass
3578
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3579
logger.warning("Could not save persistent state: {}"
3580
.format(os.strerror(e.errno)))
3581
else:
3582
logger.warning("Could not save persistent state:",
3583
exc_info=e)
3584
raise
3585
2434
if e.errno not in set((errno.ENOENT, errno.EACCES,
2435
errno.EEXIST)):
2436
raise e
2437
3586
2438
# Delete all clients, and settings from config
3587
2439
while tcp_server.clients:
3588
2440
name, client = tcp_server.clients.popitem()
3589
2441
if use_dbus:
3590
2442
client.remove_from_connection()
3591
# Don't signal the disabling
2443
# Don't signal anything except ClientRemoved
3592
2444
client.disable(quiet=True)
3593
# Emit D-Bus signal for removal
3594
2445
if use_dbus:
3595
mandos_dbus_service.client_removed_signal(client)
2446
# Emit D-Bus signal
2447
mandos_dbus_service.ClientRemoved(client
2448
.dbus_object_path,
2449
client.name)
3596
2450
client_settings.clear()
3597
2451
3598
2452
atexit.register(cleanup)
3599
3600
for client in tcp_server.clients.values():
2453
2454
for client in tcp_server.clients.itervalues():
3601
2455
if use_dbus:
3602
# Emit D-Bus signal for adding
3603
mandos_dbus_service.client_added_signal(client)
2456
# Emit D-Bus signal
2457
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3604
2458
# Need to initiate checking of clients
3605
2459
if client.enabled:
3606
2460
client.init_checker()
3607
2461
3608
2462
tcp_server.enable()
3609
2463
tcp_server.server_activate()
3610
2464
3611
2465
# Find out what port we got
3612
if zeroconf:
3613
service.port = tcp_server.socket.getsockname()[1]
2466
service.port = tcp_server.socket.getsockname()[1]
3614
2467
if use_ipv6:
3615
2468
logger.info("Now listening on address %r, port %d,"
3616
" flowinfo %d, scope_id %d",
3617
*tcp_server.socket.getsockname())
2469
" flowinfo %d, scope_id %d"
2470
% tcp_server.socket.getsockname())
3618
2471
else: # IPv4
3619
logger.info("Now listening on address %r, port %d",
3620
*tcp_server.socket.getsockname())
3621
3622
# service.interface = tcp_server.socket.getsockname()[3]
3623
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
3624
2477
try:
3625
if zeroconf:
3626
# From the Avahi example code
3627
try:
3628
service.activate()
3629
except dbus.exceptions.DBusException as error:
3630
logger.critical("D-Bus Exception", exc_info=error)
3631
cleanup()
3632
sys.exit(1)
3633
# End of Avahi example code
3634
3635
GLib.io_add_watch(
3636
GLib.IOChannel.unix_new(tcp_server.fileno()),
3637
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3638
lambda *args, **kwargs: (tcp_server.handle_request
3639
(*args[2:], **kwargs) or True))
3640
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
3641
2492
logger.debug("Starting main loop")
3642
2493
main_loop.run()
3643
2494
except AvahiError as error:
3644
logger.critical("Avahi Error", exc_info=error)
2495
logger.critical("AvahiError: %s", error)
3645
2496
cleanup()
3646
2497
sys.exit(1)
3647
2498
except KeyboardInterrupt:
3652
2503
# Must run before the D-Bus bus name gets deregistered
3653
2504
cleanup()
3654
2505
3655
3656
def should_only_run_tests():
3657
parser = argparse.ArgumentParser(add_help=False)
3658
parser.add_argument("--check", action='store_true')
3659
args, unknown_args = parser.parse_known_args()
3660
run_tests = args.check
3661
if run_tests:
3662
# Remove --check argument from sys.argv
3663
sys.argv[1:] = unknown_args
3664
return run_tests
3665
3666
# Add all tests from doctest strings
3667
def load_tests(loader, tests, none):
3668
import doctest
3669
tests.addTests(doctest.DocTestSuite())
3670
return tests
3671
3672
2506
if __name__ == '__main__':
3673
try:
3674
if should_only_run_tests():
3675
# Call using ./mandos --check [--verbose]
3676
unittest.main()
3677
else:
3678
main()
3679
finally:
3680
logging.shutdown()
2507
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0