To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/trunk
« back to all changes in this revision
Viewing changes to mandos
- browse files at revision 1198
- compare with another revision
- download diff
- download tarball
- view history from revision 1198
- Committer: teddy at recompile
- Date: 2020-01-18 00:57:30 UTC
- Revision ID: teddy@recompile.se-20200118005730-rysosg44wz5gyxf8
DBUS-API: Order properties alphabetically
In the documentation for the D-Bus API, list the client object
properties in alphabetical order.
In the documentation for the D-Bus API, list the client object
properties in alphabetical order.
- files added:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- plugin-helpers
- files removed:
- initramfs-tools-hook-conf
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python
2
# -*- mode: python; coding: utf-8 -*-
3
#
1
#!/usr/bin/python3 -bI
2
# -*- mode: python; after-save-hook: (lambda () (let ((command (if (fboundp 'file-local-name) (file-local-name (buffer-file-name)) (or (file-remote-p (buffer-file-name) 'localname) (buffer-file-name))))) (if (= (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (format "%s --check" (shell-quote-argument command)) nil "*Test*")) 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w))) (progn (with-current-buffer "*Test*" (compilation-mode)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); coding: utf-8 -*-
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
31
32
# Contact the authors at <mandos@recompile.se>.
32
#
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
import SocketServer as socketserver
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
38
47
import socket
39
48
import argparse
40
49
import datetime
41
50
import errno
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
49
55
import sys
50
56
import re
51
57
import os
60
66
import struct
61
67
import fcntl
62
68
import functools
63
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
64
73
import multiprocessing
65
74
import types
66
75
import binascii
67
76
import tempfile
77
import itertools
78
import collections
79
import codecs
80
import unittest
68
81
69
82
import dbus
70
83
import dbus.service
71
import gobject
72
import avahi
84
import gi
85
from gi.repository import GLib
73
86
from dbus.mainloop.glib import DBusGMainLoop
74
87
import ctypes
75
88
import ctypes.util
76
89
import xml.dom.minidom
77
90
import inspect
78
import GnuPGInterface
79
91
92
if sys.version_info.major == 2:
93
__metaclass__ = type
94
str = unicode
95
96
# Show warnings by default
97
if not sys.warnoptions:
98
import warnings
99
warnings.simplefilter("default")
100
101
# Try to find the value of SO_BINDTODEVICE:
80
102
try:
103
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
104
# newer, and it is also the most natural place for it:
81
105
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
82
106
except AttributeError:
83
107
try:
108
# This is where SO_BINDTODEVICE was up to and including Python
109
# 2.6, and also 3.2:
84
110
from IN import SO_BINDTODEVICE
85
111
except ImportError:
86
SO_BINDTODEVICE = None
87
88
version = "1.4.1"
112
# In Python 2.7 it seems to have been removed entirely.
113
# Try running the C preprocessor:
114
try:
115
cc = subprocess.Popen(["cc", "--language=c", "-E",
116
"/dev/stdin"],
117
stdin=subprocess.PIPE,
118
stdout=subprocess.PIPE)
119
stdout = cc.communicate(
120
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
121
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
122
except (OSError, ValueError, IndexError):
123
# No value found
124
SO_BINDTODEVICE = None
125
126
if sys.version_info < (3, 2):
127
configparser.Configparser = configparser.SafeConfigParser
128
129
version = "1.8.9"
89
130
stored_state_file = "clients.pickle"
90
131
91
132
logger = logging.getLogger()
92
syslogger = (logging.handlers.SysLogHandler
93
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
94
address = str("/dev/log")))
133
logging.captureWarnings(True) # Show warnings via the logging system
134
syslogger = None
95
135
96
136
try:
97
if_nametoindex = (ctypes.cdll.LoadLibrary
98
(ctypes.util.find_library("c"))
99
.if_nametoindex)
137
if_nametoindex = ctypes.cdll.LoadLibrary(
138
ctypes.util.find_library("c")).if_nametoindex
100
139
except (OSError, AttributeError):
140
101
141
def if_nametoindex(interface):
102
142
"Get an interface index the hard way, i.e. using fcntl()"
103
143
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
104
144
with contextlib.closing(socket.socket()) as s:
105
145
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
106
struct.pack(str("16s16x"),
107
interface))
108
interface_index = struct.unpack(str("I"),
109
ifreq[16:20])[0]
146
struct.pack(b"16s16x", interface))
147
interface_index = struct.unpack("I", ifreq[16:20])[0]
110
148
return interface_index
111
149
112
150
151
def copy_function(func):
152
"""Make a copy of a function"""
153
if sys.version_info.major == 2:
154
return types.FunctionType(func.func_code,
155
func.func_globals,
156
func.func_name,
157
func.func_defaults,
158
func.func_closure)
159
else:
160
return types.FunctionType(func.__code__,
161
func.__globals__,
162
func.__name__,
163
func.__defaults__,
164
func.__closure__)
165
166
113
167
def initlogger(debug, level=logging.WARNING):
114
168
"""init logger and add loglevel"""
115
169
170
global syslogger
171
syslogger = (logging.handlers.SysLogHandler(
172
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
173
address="/dev/log"))
116
174
syslogger.setFormatter(logging.Formatter
117
175
('Mandos [%(process)d]: %(levelname)s:'
118
176
' %(message)s'))
119
177
logger.addHandler(syslogger)
120
178
121
179
if debug:
122
180
console = logging.StreamHandler()
123
181
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
133
191
pass
134
192
135
193
136
class PGPEngine(object):
194
class PGPEngine:
137
195
"""A simple class for OpenPGP symmetric encryption & decryption"""
196
138
197
def __init__(self):
139
self.gnupg = GnuPGInterface.GnuPG()
140
198
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
141
self.gnupg = GnuPGInterface.GnuPG()
142
self.gnupg.options.meta_interactive = False
143
self.gnupg.options.homedir = self.tempdir
144
self.gnupg.options.extra_args.extend(['--force-mdc',
145
'--quiet',
146
'--no-use-agent'])
147
199
self.gpg = "gpg"
200
try:
201
output = subprocess.check_output(["gpgconf"])
202
for line in output.splitlines():
203
name, text, path = line.split(b":")
204
if name == b"gpg":
205
self.gpg = path
206
break
207
except OSError as e:
208
if e.errno != errno.ENOENT:
209
raise
210
self.gnupgargs = ['--batch',
211
'--homedir', self.tempdir,
212
'--force-mdc',
213
'--quiet']
214
# Only GPG version 1 has the --no-use-agent option.
215
if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
216
self.gnupgargs.append("--no-use-agent")
217
148
218
def __enter__(self):
149
219
return self
150
151
def __exit__ (self, exc_type, exc_value, traceback):
220
221
def __exit__(self, exc_type, exc_value, traceback):
152
222
self._cleanup()
153
223
return False
154
224
155
225
def __del__(self):
156
226
self._cleanup()
157
227
158
228
def _cleanup(self):
159
229
if self.tempdir is not None:
160
230
# Delete contents of tempdir
161
231
for root, dirs, files in os.walk(self.tempdir,
162
topdown = False):
232
topdown=False):
163
233
for filename in files:
164
234
os.remove(os.path.join(root, filename))
165
235
for dirname in dirs:
167
237
# Remove tempdir
168
238
os.rmdir(self.tempdir)
169
239
self.tempdir = None
170
240
171
241
def password_encode(self, password):
172
242
# Passphrase can not be empty and can not contain newlines or
173
243
# NUL bytes. So we prefix it and hex encode it.
174
return b"mandos" + binascii.hexlify(password)
175
244
encoded = b"mandos" + binascii.hexlify(password)
245
if len(encoded) > 2048:
246
# GnuPG can't handle long passwords, so encode differently
247
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
248
.replace(b"\n", b"\\n")
249
.replace(b"\0", b"\\x00"))
250
return encoded
251
176
252
def encrypt(self, data, password):
177
self.gnupg.passphrase = self.password_encode(password)
178
with open(os.devnull) as devnull:
179
try:
180
proc = self.gnupg.run(['--symmetric'],
181
create_fhs=['stdin', 'stdout'],
182
attach_fhs={'stderr': devnull})
183
with contextlib.closing(proc.handles['stdin']) as f:
184
f.write(data)
185
with contextlib.closing(proc.handles['stdout']) as f:
186
ciphertext = f.read()
187
proc.wait()
188
except IOError as e:
189
raise PGPError(e)
190
self.gnupg.passphrase = None
253
passphrase = self.password_encode(password)
254
with tempfile.NamedTemporaryFile(
255
dir=self.tempdir) as passfile:
256
passfile.write(passphrase)
257
passfile.flush()
258
proc = subprocess.Popen([self.gpg, '--symmetric',
259
'--passphrase-file',
260
passfile.name]
261
+ self.gnupgargs,
262
stdin=subprocess.PIPE,
263
stdout=subprocess.PIPE,
264
stderr=subprocess.PIPE)
265
ciphertext, err = proc.communicate(input=data)
266
if proc.returncode != 0:
267
raise PGPError(err)
191
268
return ciphertext
192
269
193
270
def decrypt(self, data, password):
194
self.gnupg.passphrase = self.password_encode(password)
195
with open(os.devnull) as devnull:
196
try:
197
proc = self.gnupg.run(['--decrypt'],
198
create_fhs=['stdin', 'stdout'],
199
attach_fhs={'stderr': devnull})
200
with contextlib.closing(proc.handles['stdin'] ) as f:
201
f.write(data)
202
with contextlib.closing(proc.handles['stdout']) as f:
203
decrypted_plaintext = f.read()
204
proc.wait()
205
except IOError as e:
206
raise PGPError(e)
207
self.gnupg.passphrase = None
271
passphrase = self.password_encode(password)
272
with tempfile.NamedTemporaryFile(
273
dir=self.tempdir) as passfile:
274
passfile.write(passphrase)
275
passfile.flush()
276
proc = subprocess.Popen([self.gpg, '--decrypt',
277
'--passphrase-file',
278
passfile.name]
279
+ self.gnupgargs,
280
stdin=subprocess.PIPE,
281
stdout=subprocess.PIPE,
282
stderr=subprocess.PIPE)
283
decrypted_plaintext, err = proc.communicate(input=data)
284
if proc.returncode != 0:
285
raise PGPError(err)
208
286
return decrypted_plaintext
209
287
210
288
289
# Pretend that we have an Avahi module
290
class avahi:
291
"""This isn't so much a class as it is a module-like namespace."""
292
IF_UNSPEC = -1 # avahi-common/address.h
293
PROTO_UNSPEC = -1 # avahi-common/address.h
294
PROTO_INET = 0 # avahi-common/address.h
295
PROTO_INET6 = 1 # avahi-common/address.h
296
DBUS_NAME = "org.freedesktop.Avahi"
297
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
298
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
299
DBUS_PATH_SERVER = "/"
300
301
@staticmethod
302
def string_array_to_txt_array(t):
303
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
304
for s in t), signature="ay")
305
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
306
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
307
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
308
SERVER_INVALID = 0 # avahi-common/defs.h
309
SERVER_REGISTERING = 1 # avahi-common/defs.h
310
SERVER_RUNNING = 2 # avahi-common/defs.h
311
SERVER_COLLISION = 3 # avahi-common/defs.h
312
SERVER_FAILURE = 4 # avahi-common/defs.h
313
211
314
212
315
class AvahiError(Exception):
213
316
def __init__(self, value, *args, **kwargs):
214
317
self.value = value
215
super(AvahiError, self).__init__(value, *args, **kwargs)
216
def __unicode__(self):
217
return unicode(repr(self.value))
318
return super(AvahiError, self).__init__(value, *args,
319
**kwargs)
320
218
321
219
322
class AvahiServiceError(AvahiError):
220
323
pass
221
324
325
222
326
class AvahiGroupError(AvahiError):
223
327
pass
224
328
225
329
226
class AvahiService(object):
330
class AvahiService:
227
331
"""An Avahi (Zeroconf) service.
228
332
229
333
Attributes:
230
334
interface: integer; avahi.IF_UNSPEC or an interface index.
231
335
Used to optionally bind to the specified interface.
232
336
name: string; Example: 'Mandos'
233
337
type: string; Example: '_mandos._tcp'.
234
See <http://www.dns-sd.org/ServiceTypes.html>
338
See <https://www.iana.org/assignments/service-names-port-numbers>
235
339
port: integer; what port to announce
236
340
TXT: list of strings; TXT record for the service
237
341
domain: string; Domain to publish on, default to .local if empty.
243
347
server: D-Bus Server
244
348
bus: dbus.SystemBus()
245
349
"""
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):
350
351
def __init__(self,
352
interface=avahi.IF_UNSPEC,
353
name=None,
354
servicetype=None,
355
port=None,
356
TXT=None,
357
domain="",
358
host="",
359
max_renames=32768,
360
protocol=avahi.PROTO_UNSPEC,
361
bus=None):
250
362
self.interface = interface
251
363
self.name = name
252
364
self.type = servicetype
261
373
self.server = None
262
374
self.bus = bus
263
375
self.entry_group_state_changed_match = None
264
def rename(self):
376
377
def rename(self, remove=True):
265
378
"""Derived from the Avahi example code"""
266
379
if self.rename_count >= self.max_renames:
267
380
logger.critical("No suitable Zeroconf service name found"
268
381
" after %i retries, exiting.",
269
382
self.rename_count)
270
383
raise AvahiServiceError("Too many renames")
271
self.name = unicode(self.server
272
.GetAlternativeServiceName(self.name))
384
self.name = str(
385
self.server.GetAlternativeServiceName(self.name))
386
self.rename_count += 1
273
387
logger.info("Changing Zeroconf service name to %r ...",
274
388
self.name)
275
self.remove()
389
if remove:
390
self.remove()
276
391
try:
277
392
self.add()
278
393
except dbus.exceptions.DBusException as error:
279
logger.critical("DBusException: %s", error)
280
self.cleanup()
281
os._exit(1)
282
self.rename_count += 1
394
if (error.get_dbus_name()
395
== "org.freedesktop.Avahi.CollisionError"):
396
logger.info("Local Zeroconf service name collision.")
397
return self.rename(remove=False)
398
else:
399
logger.critical("D-Bus Exception", exc_info=error)
400
self.cleanup()
401
os._exit(1)
402
283
403
def remove(self):
284
404
"""Derived from the Avahi example code"""
285
405
if self.entry_group_state_changed_match is not None:
287
407
self.entry_group_state_changed_match = None
288
408
if self.group is not None:
289
409
self.group.Reset()
410
290
411
def add(self):
291
412
"""Derived from the Avahi example code"""
292
413
self.remove()
309
430
dbus.UInt16(self.port),
310
431
avahi.string_array_to_txt_array(self.TXT))
311
432
self.group.Commit()
433
312
434
def entry_group_state_changed(self, state, error):
313
435
"""Derived from the Avahi example code"""
314
436
logger.debug("Avahi entry group state change: %i", state)
315
437
316
438
if state == avahi.ENTRY_GROUP_ESTABLISHED:
317
439
logger.debug("Zeroconf service established.")
318
440
elif state == avahi.ENTRY_GROUP_COLLISION:
320
442
self.rename()
321
443
elif state == avahi.ENTRY_GROUP_FAILURE:
322
444
logger.critical("Avahi: Error in group state changed %s",
323
unicode(error))
324
raise AvahiGroupError("State changed: %s"
325
% unicode(error))
445
str(error))
446
raise AvahiGroupError("State changed: {!s}".format(error))
447
326
448
def cleanup(self):
327
449
"""Derived from the Avahi example code"""
328
450
if self.group is not None:
333
455
pass
334
456
self.group = None
335
457
self.remove()
458
336
459
def server_state_changed(self, state, error=None):
337
460
"""Derived from the Avahi example code"""
338
461
logger.debug("Avahi server state change: %i", state)
339
bad_states = { avahi.SERVER_INVALID:
340
"Zeroconf server invalid",
341
avahi.SERVER_REGISTERING: None,
342
avahi.SERVER_COLLISION:
343
"Zeroconf server name collision",
344
avahi.SERVER_FAILURE:
345
"Zeroconf server failure" }
462
bad_states = {
463
avahi.SERVER_INVALID: "Zeroconf server invalid",
464
avahi.SERVER_REGISTERING: None,
465
avahi.SERVER_COLLISION: "Zeroconf server name collision",
466
avahi.SERVER_FAILURE: "Zeroconf server failure",
467
}
346
468
if state in bad_states:
347
469
if bad_states[state] is not None:
348
470
if error is None:
351
473
logger.error(bad_states[state] + ": %r", error)
352
474
self.cleanup()
353
475
elif state == avahi.SERVER_RUNNING:
354
self.add()
476
try:
477
self.add()
478
except dbus.exceptions.DBusException as error:
479
if (error.get_dbus_name()
480
== "org.freedesktop.Avahi.CollisionError"):
481
logger.info("Local Zeroconf service name"
482
" collision.")
483
return self.rename(remove=False)
484
else:
485
logger.critical("D-Bus Exception", exc_info=error)
486
self.cleanup()
487
os._exit(1)
355
488
else:
356
489
if error is None:
357
490
logger.debug("Unknown state: %r", state)
358
491
else:
359
492
logger.debug("Unknown state: %r: %r", state, error)
493
360
494
def activate(self):
361
495
"""Derived from the Avahi example code"""
362
496
if self.server is None:
366
500
follow_name_owner_changes=True),
367
501
avahi.DBUS_INTERFACE_SERVER)
368
502
self.server.connect_to_signal("StateChanged",
369
self.server_state_changed)
503
self.server_state_changed)
370
504
self.server_state_changed(self.server.GetState())
371
505
506
372
507
class AvahiServiceToSyslog(AvahiService):
373
def rename(self):
508
def rename(self, *args, **kwargs):
374
509
"""Add the new name to the syslog messages"""
375
ret = AvahiService.rename(self)
376
syslogger.setFormatter(logging.Formatter
377
('Mandos (%s) [%%(process)d]:'
378
' %%(levelname)s: %%(message)s'
379
% self.name))
510
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
511
syslogger.setFormatter(logging.Formatter(
512
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
513
.format(self.name)))
380
514
return ret
381
515
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):
516
517
# Pretend that we have a GnuTLS module
518
class gnutls:
519
"""This isn't so much a class as it is a module-like namespace."""
520
521
library = ctypes.util.find_library("gnutls")
522
if library is None:
523
library = ctypes.util.find_library("gnutls-deb0")
524
_library = ctypes.cdll.LoadLibrary(library)
525
del library
526
527
# Unless otherwise indicated, the constants and types below are
528
# all from the gnutls/gnutls.h C header file.
529
530
# Constants
531
E_SUCCESS = 0
532
E_INTERRUPTED = -52
533
E_AGAIN = -28
534
CRT_OPENPGP = 2
535
CRT_RAWPK = 3
536
CLIENT = 2
537
SHUT_RDWR = 0
538
CRD_CERTIFICATE = 1
539
E_NO_CERTIFICATE_FOUND = -49
540
X509_FMT_DER = 0
541
NO_TICKETS = 1<<10
542
ENABLE_RAWPK = 1<<18
543
CTYPE_PEERS = 3
544
KEYID_USE_SHA256 = 1 # gnutls/x509.h
545
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
546
547
# Types
548
class session_int(ctypes.Structure):
549
_fields_ = []
550
session_t = ctypes.POINTER(session_int)
551
552
class certificate_credentials_st(ctypes.Structure):
553
_fields_ = []
554
certificate_credentials_t = ctypes.POINTER(
555
certificate_credentials_st)
556
certificate_type_t = ctypes.c_int
557
558
class datum_t(ctypes.Structure):
559
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
560
('size', ctypes.c_uint)]
561
562
class openpgp_crt_int(ctypes.Structure):
563
_fields_ = []
564
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
565
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
566
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
567
credentials_type_t = ctypes.c_int
568
transport_ptr_t = ctypes.c_void_p
569
close_request_t = ctypes.c_int
570
571
# Exceptions
572
class Error(Exception):
573
def __init__(self, message=None, code=None, args=()):
574
# Default usage is by a message string, but if a return
575
# code is passed, convert it to a string with
576
# gnutls.strerror()
577
self.code = code
578
if message is None and code is not None:
579
message = gnutls.strerror(code)
580
return super(gnutls.Error, self).__init__(
581
message, *args)
582
583
class CertificateSecurityError(Error):
584
pass
585
586
# Classes
587
class Credentials:
588
def __init__(self):
589
self._c_object = gnutls.certificate_credentials_t()
590
gnutls.certificate_allocate_credentials(
591
ctypes.byref(self._c_object))
592
self.type = gnutls.CRD_CERTIFICATE
593
594
def __del__(self):
595
gnutls.certificate_free_credentials(self._c_object)
596
597
class ClientSession:
598
def __init__(self, socket, credentials=None):
599
self._c_object = gnutls.session_t()
600
gnutls_flags = gnutls.CLIENT
601
if gnutls.check_version(b"3.5.6"):
602
gnutls_flags |= gnutls.NO_TICKETS
603
if gnutls.has_rawpk:
604
gnutls_flags |= gnutls.ENABLE_RAWPK
605
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
606
del gnutls_flags
607
gnutls.set_default_priority(self._c_object)
608
gnutls.transport_set_ptr(self._c_object, socket.fileno())
609
gnutls.handshake_set_private_extensions(self._c_object,
610
True)
611
self.socket = socket
612
if credentials is None:
613
credentials = gnutls.Credentials()
614
gnutls.credentials_set(self._c_object, credentials.type,
615
ctypes.cast(credentials._c_object,
616
ctypes.c_void_p))
617
self.credentials = credentials
618
619
def __del__(self):
620
gnutls.deinit(self._c_object)
621
622
def handshake(self):
623
return gnutls.handshake(self._c_object)
624
625
def send(self, data):
626
data = bytes(data)
627
data_len = len(data)
628
while data_len > 0:
629
data_len -= gnutls.record_send(self._c_object,
630
data[-data_len:],
631
data_len)
632
633
def bye(self):
634
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
635
636
# Error handling functions
637
def _error_code(result):
638
"""A function to raise exceptions on errors, suitable
639
for the 'restype' attribute on ctypes functions"""
640
if result >= 0:
641
return result
642
if result == gnutls.E_NO_CERTIFICATE_FOUND:
643
raise gnutls.CertificateSecurityError(code=result)
644
raise gnutls.Error(code=result)
645
646
def _retry_on_error(result, func, arguments):
647
"""A function to retry on some errors, suitable
648
for the 'errcheck' attribute on ctypes functions"""
649
while result < 0:
650
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
651
return _error_code(result)
652
result = func(*arguments)
653
return result
654
655
# Unless otherwise indicated, the function declarations below are
656
# all from the gnutls/gnutls.h C header file.
657
658
# Functions
659
priority_set_direct = _library.gnutls_priority_set_direct
660
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
661
ctypes.POINTER(ctypes.c_char_p)]
662
priority_set_direct.restype = _error_code
663
664
init = _library.gnutls_init
665
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
666
init.restype = _error_code
667
668
set_default_priority = _library.gnutls_set_default_priority
669
set_default_priority.argtypes = [session_t]
670
set_default_priority.restype = _error_code
671
672
record_send = _library.gnutls_record_send
673
record_send.argtypes = [session_t, ctypes.c_void_p,
674
ctypes.c_size_t]
675
record_send.restype = ctypes.c_ssize_t
676
record_send.errcheck = _retry_on_error
677
678
certificate_allocate_credentials = (
679
_library.gnutls_certificate_allocate_credentials)
680
certificate_allocate_credentials.argtypes = [
681
ctypes.POINTER(certificate_credentials_t)]
682
certificate_allocate_credentials.restype = _error_code
683
684
certificate_free_credentials = (
685
_library.gnutls_certificate_free_credentials)
686
certificate_free_credentials.argtypes = [
687
certificate_credentials_t]
688
certificate_free_credentials.restype = None
689
690
handshake_set_private_extensions = (
691
_library.gnutls_handshake_set_private_extensions)
692
handshake_set_private_extensions.argtypes = [session_t,
693
ctypes.c_int]
694
handshake_set_private_extensions.restype = None
695
696
credentials_set = _library.gnutls_credentials_set
697
credentials_set.argtypes = [session_t, credentials_type_t,
698
ctypes.c_void_p]
699
credentials_set.restype = _error_code
700
701
strerror = _library.gnutls_strerror
702
strerror.argtypes = [ctypes.c_int]
703
strerror.restype = ctypes.c_char_p
704
705
certificate_type_get = _library.gnutls_certificate_type_get
706
certificate_type_get.argtypes = [session_t]
707
certificate_type_get.restype = _error_code
708
709
certificate_get_peers = _library.gnutls_certificate_get_peers
710
certificate_get_peers.argtypes = [session_t,
711
ctypes.POINTER(ctypes.c_uint)]
712
certificate_get_peers.restype = ctypes.POINTER(datum_t)
713
714
global_set_log_level = _library.gnutls_global_set_log_level
715
global_set_log_level.argtypes = [ctypes.c_int]
716
global_set_log_level.restype = None
717
718
global_set_log_function = _library.gnutls_global_set_log_function
719
global_set_log_function.argtypes = [log_func]
720
global_set_log_function.restype = None
721
722
deinit = _library.gnutls_deinit
723
deinit.argtypes = [session_t]
724
deinit.restype = None
725
726
handshake = _library.gnutls_handshake
727
handshake.argtypes = [session_t]
728
handshake.restype = _error_code
729
handshake.errcheck = _retry_on_error
730
731
transport_set_ptr = _library.gnutls_transport_set_ptr
732
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
733
transport_set_ptr.restype = None
734
735
bye = _library.gnutls_bye
736
bye.argtypes = [session_t, close_request_t]
737
bye.restype = _error_code
738
bye.errcheck = _retry_on_error
739
740
check_version = _library.gnutls_check_version
741
check_version.argtypes = [ctypes.c_char_p]
742
check_version.restype = ctypes.c_char_p
743
744
_need_version = b"3.3.0"
745
if check_version(_need_version) is None:
746
raise self.Error("Needs GnuTLS {} or later"
747
.format(_need_version))
748
749
_tls_rawpk_version = b"3.6.6"
750
has_rawpk = bool(check_version(_tls_rawpk_version))
751
752
if has_rawpk:
753
# Types
754
class pubkey_st(ctypes.Structure):
755
_fields = []
756
pubkey_t = ctypes.POINTER(pubkey_st)
757
758
x509_crt_fmt_t = ctypes.c_int
759
760
# All the function declarations below are from gnutls/abstract.h
761
pubkey_init = _library.gnutls_pubkey_init
762
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
763
pubkey_init.restype = _error_code
764
765
pubkey_import = _library.gnutls_pubkey_import
766
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
767
x509_crt_fmt_t]
768
pubkey_import.restype = _error_code
769
770
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
771
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
772
ctypes.POINTER(ctypes.c_ubyte),
773
ctypes.POINTER(ctypes.c_size_t)]
774
pubkey_get_key_id.restype = _error_code
775
776
pubkey_deinit = _library.gnutls_pubkey_deinit
777
pubkey_deinit.argtypes = [pubkey_t]
778
pubkey_deinit.restype = None
779
else:
780
# All the function declarations below are from gnutls/openpgp.h
781
782
openpgp_crt_init = _library.gnutls_openpgp_crt_init
783
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
784
openpgp_crt_init.restype = _error_code
785
786
openpgp_crt_import = _library.gnutls_openpgp_crt_import
787
openpgp_crt_import.argtypes = [openpgp_crt_t,
788
ctypes.POINTER(datum_t),
789
openpgp_crt_fmt_t]
790
openpgp_crt_import.restype = _error_code
791
792
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
793
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
794
ctypes.POINTER(ctypes.c_uint)]
795
openpgp_crt_verify_self.restype = _error_code
796
797
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
798
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
799
openpgp_crt_deinit.restype = None
800
801
openpgp_crt_get_fingerprint = (
802
_library.gnutls_openpgp_crt_get_fingerprint)
803
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
804
ctypes.c_void_p,
805
ctypes.POINTER(
806
ctypes.c_size_t)]
807
openpgp_crt_get_fingerprint.restype = _error_code
808
809
if check_version(b"3.6.4"):
810
certificate_type_get2 = _library.gnutls_certificate_type_get2
811
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
812
certificate_type_get2.restype = _error_code
813
814
# Remove non-public functions
815
del _error_code, _retry_on_error
816
817
818
def call_pipe(connection, # : multiprocessing.Connection
819
func, *args, **kwargs):
820
"""This function is meant to be called by multiprocessing.Process
821
822
This function runs func(*args, **kwargs), and writes the resulting
823
return value on the provided multiprocessing.Connection.
824
"""
825
connection.send(func(*args, **kwargs))
826
connection.close()
827
828
829
class Client:
389
830
"""A representation of a client host served by this server.
390
831
391
832
Attributes:
392
833
approved: bool(); 'None' if not yet approved/disapproved
393
834
approval_delay: datetime.timedelta(); Time to wait for approval
394
835
approval_duration: datetime.timedelta(); Duration of one approval
395
checker: subprocess.Popen(); a running checker process used
396
to see if the client lives.
397
'None' if no process is running.
398
checker_callback_tag: a gobject event source tag, or None
836
checker: multiprocessing.Process(); a running checker process used
837
to see if the client lives. 'None' if no process is
838
running.
839
checker_callback_tag: a GLib event source tag, or None
399
840
checker_command: string; External command which is run to check
400
841
if client lives. %() expansions are done at
401
842
runtime with vars(self) as dict, so that for
402
843
instance %(name)s can be used in the command.
403
checker_initiator_tag: a gobject event source tag, or None
844
checker_initiator_tag: a GLib event source tag, or None
404
845
created: datetime.datetime(); (UTC) object creation
405
846
client_structure: Object describing what attributes a client has
406
847
and is used for storing the client at exit
407
848
current_checker_command: string; current running checker_command
408
disable_initiator_tag: a gobject event source tag, or None
849
disable_initiator_tag: a GLib event source tag, or None
409
850
enabled: bool()
410
851
fingerprint: string (40 or 32 hexadecimal digits); used to
411
uniquely identify the client
852
uniquely identify an OpenPGP client
853
key_id: string (64 hexadecimal digits); used to uniquely identify
854
a client using raw public keys
412
855
host: string; available for use by the checker command
413
856
interval: datetime.timedelta(); How often to start a new checker
414
857
last_approval_request: datetime.datetime(); (UTC) or None
415
858
last_checked_ok: datetime.datetime(); (UTC) or None
416
859
last_checker_status: integer between 0 and 255 reflecting exit
417
860
status of last checker. -1 reflects crashed
418
checker, or None.
861
checker, -2 means no checker completed yet.
862
last_checker_signal: The signal which killed the last checker, if
863
last_checker_status is -1
419
864
last_enabled: datetime.datetime(); (UTC) or None
420
865
name: string; from the config file, used in log messages and
421
866
D-Bus identifiers
422
867
secret: bytestring; sent verbatim (over TLS) to client
423
868
timeout: datetime.timedelta(); How long from last_checked_ok
424
869
until this client is disabled
425
extended_timeout: extra long timeout when password has been sent
870
extended_timeout: extra long timeout when secret has been sent
426
871
runtime_expansions: Allowed attributes for runtime expansion.
427
872
expires: datetime.datetime(); time (UTC) when a client will be
428
873
disabled, or None
874
server_settings: The server_settings dict from main()
429
875
"""
430
876
431
877
runtime_expansions = ("approval_delay", "approval_duration",
432
"created", "enabled", "fingerprint",
433
"host", "interval", "last_checked_ok",
878
"created", "enabled", "expires", "key_id",
879
"fingerprint", "host", "interval",
880
"last_approval_request", "last_checked_ok",
434
881
"last_enabled", "name", "timeout")
435
client_defaults = { "timeout": "5m",
436
"extended_timeout": "15m",
437
"interval": "2m",
438
"checker": "fping -q -- %%(host)s",
439
"host": "",
440
"approval_delay": "0s",
441
"approval_duration": "1s",
442
"approved_by_default": "True",
443
"enabled": "True",
444
}
445
446
def timeout_milliseconds(self):
447
"Return the 'timeout' attribute in milliseconds"
448
return timedelta_to_milliseconds(self.timeout)
449
450
def extended_timeout_milliseconds(self):
451
"Return the 'extended_timeout' attribute in milliseconds"
452
return timedelta_to_milliseconds(self.extended_timeout)
453
454
def interval_milliseconds(self):
455
"Return the 'interval' attribute in milliseconds"
456
return timedelta_to_milliseconds(self.interval)
457
458
def approval_delay_milliseconds(self):
459
return timedelta_to_milliseconds(self.approval_delay)
882
client_defaults = {
883
"timeout": "PT5M",
884
"extended_timeout": "PT15M",
885
"interval": "PT2M",
886
"checker": "fping -q -- %%(host)s",
887
"host": "",
888
"approval_delay": "PT0S",
889
"approval_duration": "PT1S",
890
"approved_by_default": "True",
891
"enabled": "True",
892
}
460
893
461
894
@staticmethod
462
895
def config_parser(config):
463
""" Construct a new dict of client settings of this form:
896
"""Construct a new dict of client settings of this form:
464
897
{ client_name: {setting_name: value, ...}, ...}
465
with exceptions for any special settings as defined above"""
898
with exceptions for any special settings as defined above.
899
NOTE: Must be a pure function. Must return the same result
900
value given the same arguments.
901
"""
466
902
settings = {}
467
903
for client_name in config.sections():
468
904
section = dict(config.items(client_name))
469
905
client = settings[client_name] = {}
470
906
471
907
client["host"] = section["host"]
472
908
# Reformat values from string types to Python types
473
909
client["approved_by_default"] = config.getboolean(
474
910
client_name, "approved_by_default")
475
client["enabled"] = config.getboolean(client_name, "enabled")
476
911
client["enabled"] = config.getboolean(client_name,
912
"enabled")
913
914
# Uppercase and remove spaces from key_id and fingerprint
915
# for later comparison purposes with return value from the
916
# key_id() and fingerprint() functions
917
client["key_id"] = (section.get("key_id", "").upper()
918
.replace(" ", ""))
477
919
client["fingerprint"] = (section["fingerprint"].upper()
478
920
.replace(" ", ""))
479
921
if "secret" in section:
480
client["secret"] = section["secret"].decode("base64")
922
client["secret"] = codecs.decode(section["secret"]
923
.encode("utf-8"),
924
"base64")
481
925
elif "secfile" in section:
482
926
with open(os.path.expanduser(os.path.expandvars
483
927
(section["secfile"])),
484
928
"rb") as secfile:
485
929
client["secret"] = secfile.read()
486
930
else:
487
raise TypeError("No secret or secfile for section %s"
488
% section)
931
raise TypeError("No secret or secfile for section {}"
932
.format(section))
489
933
client["timeout"] = string_to_delta(section["timeout"])
490
934
client["extended_timeout"] = string_to_delta(
491
935
section["extended_timeout"])
497
941
client["checker_command"] = section["checker"]
498
942
client["last_approval_request"] = None
499
943
client["last_checked_ok"] = None
500
client["last_checker_status"] = None
501
if client["enabled"]:
502
client["last_enabled"] = datetime.datetime.utcnow()
503
client["expires"] = (datetime.datetime.utcnow()
504
+ client["timeout"])
505
else:
506
client["last_enabled"] = None
507
client["expires"] = None
944
client["last_checker_status"] = -2
508
945
509
946
return settings
510
511
512
def __init__(self, settings, name = None):
513
"""Note: the 'checker' key in 'config' sets the
514
'checker_command' attribute and *not* the 'checker'
515
attribute."""
947
948
def __init__(self, settings, name=None, server_settings=None):
516
949
self.name = name
950
if server_settings is None:
951
server_settings = {}
952
self.server_settings = server_settings
517
953
# adding all client settings
518
for setting, value in settings.iteritems():
954
for setting, value in settings.items():
519
955
setattr(self, setting, value)
520
956
957
if self.enabled:
958
if not hasattr(self, "last_enabled"):
959
self.last_enabled = datetime.datetime.utcnow()
960
if not hasattr(self, "expires"):
961
self.expires = (datetime.datetime.utcnow()
962
+ self.timeout)
963
else:
964
self.last_enabled = None
965
self.expires = None
966
521
967
logger.debug("Creating client %r", self.name)
522
# Uppercase and remove spaces from fingerprint for later
523
# comparison purposes with return value from the fingerprint()
524
# function
968
logger.debug(" Key ID: %s", self.key_id)
525
969
logger.debug(" Fingerprint: %s", self.fingerprint)
526
self.created = settings.get("created", datetime.datetime.utcnow())
970
self.created = settings.get("created",
971
datetime.datetime.utcnow())
527
972
528
973
# attributes specific for this server instance
529
974
self.checker = None
533
978
self.current_checker_command = None
534
979
self.approved = None
535
980
self.approvals_pending = 0
536
self.changedstate = (multiprocessing_manager
537
.Condition(multiprocessing_manager
538
.Lock()))
539
self.client_structure = [attr for attr in
540
self.__dict__.iterkeys()
981
self.changedstate = multiprocessing_manager.Condition(
982
multiprocessing_manager.Lock())
983
self.client_structure = [attr
984
for attr in self.__dict__.keys()
541
985
if not attr.startswith("_")]
542
986
self.client_structure.append("client_structure")
543
544
for name, t in inspect.getmembers(type(self),
545
lambda obj:
546
isinstance(obj,
547
property)):
987
988
for name, t in inspect.getmembers(
989
type(self), lambda obj: isinstance(obj, property)):
548
990
if not name.startswith("_"):
549
991
self.client_structure.append(name)
550
992
551
993
# Send notice to process children that client state has changed
552
994
def send_changedstate(self):
553
995
with self.changedstate:
554
996
self.changedstate.notify_all()
555
997
556
998
def enable(self):
557
999
"""Start this client's checker and timeout hooks"""
558
1000
if getattr(self, "enabled", False):
559
1001
# Already enabled
560
1002
return
561
self.send_changedstate()
562
1003
self.expires = datetime.datetime.utcnow() + self.timeout
563
1004
self.enabled = True
564
1005
self.last_enabled = datetime.datetime.utcnow()
565
1006
self.init_checker()
566
1007
self.send_changedstate()
1008
567
1009
def disable(self, quiet=True):
568
1010
"""Disable this client."""
569
1011
if not getattr(self, "enabled", False):
570
1012
return False
571
1013
if not quiet:
572
self.send_changedstate()
573
if not quiet:
574
1014
logger.info("Disabling client %s", self.name)
575
if getattr(self, "disable_initiator_tag", False):
576
gobject.source_remove(self.disable_initiator_tag)
1015
if getattr(self, "disable_initiator_tag", None) is not None:
1016
GLib.source_remove(self.disable_initiator_tag)
577
1017
self.disable_initiator_tag = None
578
1018
self.expires = None
579
if getattr(self, "checker_initiator_tag", False):
580
gobject.source_remove(self.checker_initiator_tag)
1019
if getattr(self, "checker_initiator_tag", None) is not None:
1020
GLib.source_remove(self.checker_initiator_tag)
581
1021
self.checker_initiator_tag = None
582
1022
self.stop_checker()
583
1023
self.enabled = False
584
# Do not run this again if called by a gobject.timeout_add
1024
if not quiet:
1025
self.send_changedstate()
1026
# Do not run this again if called by a GLib.timeout_add
585
1027
return False
586
1028
587
1029
def __del__(self):
588
1030
self.disable()
589
1031
590
1032
def init_checker(self):
591
1033
# Schedule a new checker to be started an 'interval' from now,
592
1034
# and every interval from then on.
593
self.checker_initiator_tag = (gobject.timeout_add
594
(self.interval_milliseconds(),
595
self.start_checker))
1035
if self.checker_initiator_tag is not None:
1036
GLib.source_remove(self.checker_initiator_tag)
1037
self.checker_initiator_tag = GLib.timeout_add(
1038
int(self.interval.total_seconds() * 1000),
1039
self.start_checker)
596
1040
# Schedule a disable() when 'timeout' has passed
597
self.disable_initiator_tag = (gobject.timeout_add
598
(self.timeout_milliseconds(),
599
self.disable))
1041
if self.disable_initiator_tag is not None:
1042
GLib.source_remove(self.disable_initiator_tag)
1043
self.disable_initiator_tag = GLib.timeout_add(
1044
int(self.timeout.total_seconds() * 1000), self.disable)
600
1045
# Also start a new checker *right now*.
601
1046
self.start_checker()
602
603
def checker_callback(self, pid, condition, command):
1047
1048
def checker_callback(self, source, condition, connection,
1049
command):
604
1050
"""The checker has completed, so take appropriate actions."""
1051
# Read return code from connection (see call_pipe)
1052
returncode = connection.recv()
1053
connection.close()
1054
if self.checker is not None:
1055
self.checker.join()
605
1056
self.checker_callback_tag = None
606
1057
self.checker = None
607
if os.WIFEXITED(condition):
608
self.last_checker_status = os.WEXITSTATUS(condition)
1058
1059
if returncode >= 0:
1060
self.last_checker_status = returncode
1061
self.last_checker_signal = None
609
1062
if self.last_checker_status == 0:
610
1063
logger.info("Checker for %(name)s succeeded",
611
1064
vars(self))
612
1065
self.checked_ok()
613
1066
else:
614
logger.info("Checker for %(name)s failed",
615
vars(self))
1067
logger.info("Checker for %(name)s failed", vars(self))
616
1068
else:
617
1069
self.last_checker_status = -1
1070
self.last_checker_signal = -returncode
618
1071
logger.warning("Checker for %(name)s crashed?",
619
1072
vars(self))
620
621
def checked_ok(self, timeout=None):
622
"""Bump up the timeout for this client.
623
624
This should only be called when the client has been seen,
625
alive and well.
626
"""
1073
return False
1074
1075
def checked_ok(self):
1076
"""Assert that the client has been seen, alive and well."""
1077
self.last_checked_ok = datetime.datetime.utcnow()
1078
self.last_checker_status = 0
1079
self.last_checker_signal = None
1080
self.bump_timeout()
1081
1082
def bump_timeout(self, timeout=None):
1083
"""Bump up the timeout for this client."""
627
1084
if timeout is None:
628
1085
timeout = self.timeout
629
self.last_checked_ok = datetime.datetime.utcnow()
630
1086
if self.disable_initiator_tag is not None:
631
gobject.source_remove(self.disable_initiator_tag)
1087
GLib.source_remove(self.disable_initiator_tag)
1088
self.disable_initiator_tag = None
632
1089
if getattr(self, "enabled", False):
633
self.disable_initiator_tag = (gobject.timeout_add
634
(timedelta_to_milliseconds
635
(timeout), self.disable))
1090
self.disable_initiator_tag = GLib.timeout_add(
1091
int(timeout.total_seconds() * 1000), self.disable)
636
1092
self.expires = datetime.datetime.utcnow() + timeout
637
1093
638
1094
def need_approval(self):
639
1095
self.last_approval_request = datetime.datetime.utcnow()
640
1096
641
1097
def start_checker(self):
642
1098
"""Start a new checker subprocess if one is not running.
643
1099
644
1100
If a checker already exists, leave it running and do
645
1101
nothing."""
646
1102
# The reason for not killing a running checker is that if we
647
# did that, then if a checker (for some reason) started
648
# running slowly and taking more than 'interval' time, the
649
# client would inevitably timeout, since no checker would get
650
# a chance to run to completion. If we instead leave running
1103
# did that, and if a checker (for some reason) started running
1104
# slowly and taking more than 'interval' time, then the client
1105
# would inevitably timeout, since no checker would get a
1106
# chance to run to completion. If we instead leave running
651
1107
# checkers alone, the checker would have to take more time
652
1108
# than 'timeout' for the client to be disabled, which is as it
653
1109
# should be.
654
655
# If a checker exists, make sure it is not a zombie
656
try:
657
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
658
except (AttributeError, OSError) as error:
659
if (isinstance(error, OSError)
660
and error.errno != errno.ECHILD):
661
raise error
662
else:
663
if pid:
664
logger.warning("Checker was a zombie")
665
gobject.source_remove(self.checker_callback_tag)
666
self.checker_callback(pid, status,
667
self.current_checker_command)
1110
1111
if self.checker is not None and not self.checker.is_alive():
1112
logger.warning("Checker was not alive; joining")
1113
self.checker.join()
1114
self.checker = None
668
1115
# Start a new checker if needed
669
1116
if self.checker is None:
1117
# Escape attributes for the shell
1118
escaped_attrs = {
1119
attr: re.escape(str(getattr(self, attr)))
1120
for attr in self.runtime_expansions}
670
1121
try:
671
# In case checker_command has exactly one % operator
672
command = self.checker_command % self.host
673
except TypeError:
674
# Escape attributes for the shell
675
escaped_attrs = dict(
676
(attr,
677
re.escape(unicode(str(getattr(self, attr, "")),
678
errors=
679
'replace')))
680
for attr in
681
self.runtime_expansions)
682
683
try:
684
command = self.checker_command % escaped_attrs
685
except TypeError as error:
686
logger.error('Could not format string "%s":'
687
' %s', self.checker_command, error)
688
return True # Try again later
1122
command = self.checker_command % escaped_attrs
1123
except TypeError as error:
1124
logger.error('Could not format string "%s"',
1125
self.checker_command,
1126
exc_info=error)
1127
return True # Try again later
689
1128
self.current_checker_command = command
690
try:
691
logger.info("Starting checker %r for %s",
692
command, self.name)
693
# We don't need to redirect stdout and stderr, since
694
# in normal mode, that is already done by daemon(),
695
# and in debug mode we don't want to. (Stdin is
696
# always replaced by /dev/null.)
697
self.checker = subprocess.Popen(command,
698
close_fds=True,
699
shell=True, cwd="/")
700
self.checker_callback_tag = (gobject.child_watch_add
701
(self.checker.pid,
702
self.checker_callback,
703
data=command))
704
# The checker may have completed before the gobject
705
# watch was added. Check for this.
706
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
707
if pid:
708
gobject.source_remove(self.checker_callback_tag)
709
self.checker_callback(pid, status, command)
710
except OSError as error:
711
logger.error("Failed to start subprocess: %s",
712
error)
713
# Re-run this periodically if run by gobject.timeout_add
1129
logger.info("Starting checker %r for %s", command,
1130
self.name)
1131
# We don't need to redirect stdout and stderr, since
1132
# in normal mode, that is already done by daemon(),
1133
# and in debug mode we don't want to. (Stdin is
1134
# always replaced by /dev/null.)
1135
# The exception is when not debugging but nevertheless
1136
# running in the foreground; use the previously
1137
# created wnull.
1138
popen_args = {"close_fds": True,
1139
"shell": True,
1140
"cwd": "/"}
1141
if (not self.server_settings["debug"]
1142
and self.server_settings["foreground"]):
1143
popen_args.update({"stdout": wnull,
1144
"stderr": wnull})
1145
pipe = multiprocessing.Pipe(duplex=False)
1146
self.checker = multiprocessing.Process(
1147
target=call_pipe,
1148
args=(pipe[1], subprocess.call, command),
1149
kwargs=popen_args)
1150
self.checker.start()
1151
self.checker_callback_tag = GLib.io_add_watch(
1152
GLib.IOChannel.unix_new(pipe[0].fileno()),
1153
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1154
self.checker_callback, pipe[0], command)
1155
# Re-run this periodically if run by GLib.timeout_add
714
1156
return True
715
1157
716
1158
def stop_checker(self):
717
1159
"""Force the checker process, if any, to stop."""
718
1160
if self.checker_callback_tag:
719
gobject.source_remove(self.checker_callback_tag)
1161
GLib.source_remove(self.checker_callback_tag)
720
1162
self.checker_callback_tag = None
721
1163
if getattr(self, "checker", None) is None:
722
1164
return
723
1165
logger.debug("Stopping checker for %(name)s", vars(self))
724
try:
725
os.kill(self.checker.pid, signal.SIGTERM)
726
#time.sleep(0.5)
727
#if self.checker.poll() is None:
728
# os.kill(self.checker.pid, signal.SIGKILL)
729
except OSError as error:
730
if error.errno != errno.ESRCH: # No such process
731
raise
1166
self.checker.terminate()
732
1167
self.checker = None
733
1168
734
1169
735
def dbus_service_property(dbus_interface, signature="v",
736
access="readwrite", byte_arrays=False):
1170
def dbus_service_property(dbus_interface,
1171
signature="v",
1172
access="readwrite",
1173
byte_arrays=False):
737
1174
"""Decorators for marking methods of a DBusObjectWithProperties to
738
1175
become properties on the D-Bus.
739
1176
740
1177
The decorated method will be called with no arguments by "Get"
741
1178
and with one argument by "Set".
742
1179
743
1180
The parameters, where they are supported, are the same as
744
1181
dbus.service.method, except there is only "signature", since the
745
1182
type from Get() and the type sent to Set() is the same.
748
1185
# "Set" method, so we fail early here:
749
1186
if byte_arrays and signature != "ay":
750
1187
raise ValueError("Byte arrays not supported for non-'ay'"
751
" signature %r" % signature)
1188
" signature {!r}".format(signature))
1189
752
1190
def decorator(func):
753
1191
func._dbus_is_property = True
754
1192
func._dbus_interface = dbus_interface
757
1195
func._dbus_name = func.__name__
758
1196
if func._dbus_name.endswith("_dbus_property"):
759
1197
func._dbus_name = func._dbus_name[:-14]
760
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
761
return func
1198
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1199
return func
1200
1201
return decorator
1202
1203
1204
def dbus_interface_annotations(dbus_interface):
1205
"""Decorator for marking functions returning interface annotations
1206
1207
Usage:
1208
1209
@dbus_interface_annotations("org.example.Interface")
1210
def _foo(self): # Function name does not matter
1211
return {"org.freedesktop.DBus.Deprecated": "true",
1212
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1213
"false"}
1214
"""
1215
1216
def decorator(func):
1217
func._dbus_is_interface = True
1218
func._dbus_interface = dbus_interface
1219
func._dbus_name = dbus_interface
1220
return func
1221
1222
return decorator
1223
1224
1225
def dbus_annotations(annotations):
1226
"""Decorator to annotate D-Bus methods, signals or properties
1227
Usage:
1228
1229
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1230
"org.freedesktop.DBus.Property."
1231
"EmitsChangedSignal": "false"})
1232
@dbus_service_property("org.example.Interface", signature="b",
1233
access="r")
1234
def Property_dbus_property(self):
1235
return dbus.Boolean(False)
1236
1237
See also the DBusObjectWithAnnotations class.
1238
"""
1239
1240
def decorator(func):
1241
func._dbus_annotations = annotations
1242
return func
1243
762
1244
return decorator
763
1245
764
1246
765
1247
class DBusPropertyException(dbus.exceptions.DBusException):
766
1248
"""A base class for D-Bus property-related exceptions
767
1249
"""
768
def __unicode__(self):
769
return unicode(str(self))
1250
pass
770
1251
771
1252
772
1253
class DBusPropertyAccessException(DBusPropertyException):
781
1262
pass
782
1263
783
1264
784
class DBusObjectWithProperties(dbus.service.Object):
1265
class DBusObjectWithAnnotations(dbus.service.Object):
1266
"""A D-Bus object with annotations.
1267
1268
Classes inheriting from this can use the dbus_annotations
1269
decorator to add annotations to methods or signals.
1270
"""
1271
1272
@staticmethod
1273
def _is_dbus_thing(thing):
1274
"""Returns a function testing if an attribute is a D-Bus thing
1275
1276
If called like _is_dbus_thing("method") it returns a function
1277
suitable for use as predicate to inspect.getmembers().
1278
"""
1279
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1280
False)
1281
1282
def _get_all_dbus_things(self, thing):
1283
"""Returns a generator of (name, attribute) pairs
1284
"""
1285
return ((getattr(athing.__get__(self), "_dbus_name", name),
1286
athing.__get__(self))
1287
for cls in self.__class__.__mro__
1288
for name, athing in
1289
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1290
1291
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1292
out_signature="s",
1293
path_keyword='object_path',
1294
connection_keyword='connection')
1295
def Introspect(self, object_path, connection):
1296
"""Overloading of standard D-Bus method.
1297
1298
Inserts annotation tags on methods and signals.
1299
"""
1300
xmlstring = dbus.service.Object.Introspect(self, object_path,
1301
connection)
1302
try:
1303
document = xml.dom.minidom.parseString(xmlstring)
1304
1305
for if_tag in document.getElementsByTagName("interface"):
1306
# Add annotation tags
1307
for typ in ("method", "signal"):
1308
for tag in if_tag.getElementsByTagName(typ):
1309
annots = dict()
1310
for name, prop in (self.
1311
_get_all_dbus_things(typ)):
1312
if (name == tag.getAttribute("name")
1313
and prop._dbus_interface
1314
== if_tag.getAttribute("name")):
1315
annots.update(getattr(
1316
prop, "_dbus_annotations", {}))
1317
for name, value in annots.items():
1318
ann_tag = document.createElement(
1319
"annotation")
1320
ann_tag.setAttribute("name", name)
1321
ann_tag.setAttribute("value", value)
1322
tag.appendChild(ann_tag)
1323
# Add interface annotation tags
1324
for annotation, value in dict(
1325
itertools.chain.from_iterable(
1326
annotations().items()
1327
for name, annotations
1328
in self._get_all_dbus_things("interface")
1329
if name == if_tag.getAttribute("name")
1330
)).items():
1331
ann_tag = document.createElement("annotation")
1332
ann_tag.setAttribute("name", annotation)
1333
ann_tag.setAttribute("value", value)
1334
if_tag.appendChild(ann_tag)
1335
# Fix argument name for the Introspect method itself
1336
if (if_tag.getAttribute("name")
1337
== dbus.INTROSPECTABLE_IFACE):
1338
for cn in if_tag.getElementsByTagName("method"):
1339
if cn.getAttribute("name") == "Introspect":
1340
for arg in cn.getElementsByTagName("arg"):
1341
if (arg.getAttribute("direction")
1342
== "out"):
1343
arg.setAttribute("name",
1344
"xml_data")
1345
xmlstring = document.toxml("utf-8")
1346
document.unlink()
1347
except (AttributeError, xml.dom.DOMException,
1348
xml.parsers.expat.ExpatError) as error:
1349
logger.error("Failed to override Introspection method",
1350
exc_info=error)
1351
return xmlstring
1352
1353
1354
class DBusObjectWithProperties(DBusObjectWithAnnotations):
785
1355
"""A D-Bus object with properties.
786
1356
787
1357
Classes inheriting from this can use the dbus_service_property
788
1358
decorator to expose methods as D-Bus properties. It exposes the
789
1359
standard Get(), Set(), and GetAll() methods on the D-Bus.
790
1360
"""
791
792
@staticmethod
793
def _is_dbus_property(obj):
794
return getattr(obj, "_dbus_is_property", False)
795
796
def _get_all_dbus_properties(self):
797
"""Returns a generator of (name, attribute) pairs
798
"""
799
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
800
for cls in self.__class__.__mro__
801
for name, prop in
802
inspect.getmembers(cls, self._is_dbus_property))
803
1361
804
1362
def _get_dbus_property(self, interface_name, property_name):
805
1363
"""Returns a bound method if one exists which is a D-Bus
806
1364
property with the specified name and interface.
807
1365
"""
808
for cls in self.__class__.__mro__:
809
for name, value in (inspect.getmembers
810
(cls, self._is_dbus_property)):
1366
for cls in self.__class__.__mro__:
1367
for name, value in inspect.getmembers(
1368
cls, self._is_dbus_thing("property")):
811
1369
if (value._dbus_name == property_name
812
1370
and value._dbus_interface == interface_name):
813
1371
return value.__get__(self)
814
1372
815
1373
# No such property
816
raise DBusPropertyNotFound(self.dbus_object_path + ":"
817
+ interface_name + "."
818
+ property_name)
819
820
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1374
raise DBusPropertyNotFound("{}:{}.{}".format(
1375
self.dbus_object_path, interface_name, property_name))
1376
1377
@classmethod
1378
def _get_all_interface_names(cls):
1379
"""Get a sequence of all interfaces supported by an object"""
1380
return (name for name in set(getattr(getattr(x, attr),
1381
"_dbus_interface", None)
1382
for x in (inspect.getmro(cls))
1383
for attr in dir(x))
1384
if name is not None)
1385
1386
@dbus.service.method(dbus.PROPERTIES_IFACE,
1387
in_signature="ss",
821
1388
out_signature="v")
822
1389
def Get(self, interface_name, property_name):
823
1390
"""Standard D-Bus property Get() method, see D-Bus standard.
829
1396
if not hasattr(value, "variant_level"):
830
1397
return value
831
1398
return type(value)(value, variant_level=value.variant_level+1)
832
1399
833
1400
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
834
1401
def Set(self, interface_name, property_name, value):
835
1402
"""Standard D-Bus property Set() method, see D-Bus standard.
841
1408
# The byte_arrays option is not supported yet on
842
1409
# signatures other than "ay".
843
1410
if prop._dbus_signature != "ay":
844
raise ValueError
845
value = dbus.ByteArray(''.join(unichr(byte)
846
for byte in value))
1411
raise ValueError("Byte arrays not supported for non-"
1412
"'ay' signature {!r}"
1413
.format(prop._dbus_signature))
1414
value = dbus.ByteArray(bytes(value))
847
1415
prop(value)
848
849
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1416
1417
@dbus.service.method(dbus.PROPERTIES_IFACE,
1418
in_signature="s",
850
1419
out_signature="a{sv}")
851
1420
def GetAll(self, interface_name):
852
1421
"""Standard D-Bus property GetAll() method, see D-Bus
853
1422
standard.
854
1423
855
1424
Note: Will not include properties with access="write".
856
1425
"""
857
1426
properties = {}
858
for name, prop in self._get_all_dbus_properties():
1427
for name, prop in self._get_all_dbus_things("property"):
859
1428
if (interface_name
860
1429
and interface_name != prop._dbus_interface):
861
1430
# Interface non-empty but did not match
867
1436
if not hasattr(value, "variant_level"):
868
1437
properties[name] = value
869
1438
continue
870
properties[name] = type(value)(value, variant_level=
871
value.variant_level+1)
1439
properties[name] = type(value)(
1440
value, variant_level=value.variant_level + 1)
872
1441
return dbus.Dictionary(properties, signature="sv")
873
1442
1443
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1444
def PropertiesChanged(self, interface_name, changed_properties,
1445
invalidated_properties):
1446
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1447
standard.
1448
"""
1449
pass
1450
874
1451
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
875
1452
out_signature="s",
876
1453
path_keyword='object_path',
877
1454
connection_keyword='connection')
878
1455
def Introspect(self, object_path, connection):
879
"""Standard D-Bus method, overloaded to insert property tags.
1456
"""Overloading of standard D-Bus method.
1457
1458
Inserts property tags and interface annotation tags.
880
1459
"""
881
xmlstring = dbus.service.Object.Introspect(self, object_path,
882
connection)
1460
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1461
object_path,
1462
connection)
883
1463
try:
884
1464
document = xml.dom.minidom.parseString(xmlstring)
1465
885
1466
def make_tag(document, name, prop):
886
1467
e = document.createElement("property")
887
1468
e.setAttribute("name", name)
888
1469
e.setAttribute("type", prop._dbus_signature)
889
1470
e.setAttribute("access", prop._dbus_access)
890
1471
return e
1472
891
1473
for if_tag in document.getElementsByTagName("interface"):
1474
# Add property tags
892
1475
for tag in (make_tag(document, name, prop)
893
1476
for name, prop
894
in self._get_all_dbus_properties()
1477
in self._get_all_dbus_things("property")
895
1478
if prop._dbus_interface
896
1479
== if_tag.getAttribute("name")):
897
1480
if_tag.appendChild(tag)
1481
# Add annotation tags for properties
1482
for tag in if_tag.getElementsByTagName("property"):
1483
annots = dict()
1484
for name, prop in self._get_all_dbus_things(
1485
"property"):
1486
if (name == tag.getAttribute("name")
1487
and prop._dbus_interface
1488
== if_tag.getAttribute("name")):
1489
annots.update(getattr(
1490
prop, "_dbus_annotations", {}))
1491
for name, value in annots.items():
1492
ann_tag = document.createElement(
1493
"annotation")
1494
ann_tag.setAttribute("name", name)
1495
ann_tag.setAttribute("value", value)
1496
tag.appendChild(ann_tag)
898
1497
# Add the names to the return values for the
899
1498
# "org.freedesktop.DBus.Properties" methods
900
1499
if (if_tag.getAttribute("name")
915
1514
except (AttributeError, xml.dom.DOMException,
916
1515
xml.parsers.expat.ExpatError) as error:
917
1516
logger.error("Failed to override Introspection method",
918
error)
919
return xmlstring
920
921
922
def datetime_to_dbus (dt, variant_level=0):
1517
exc_info=error)
1518
return xmlstring
1519
1520
1521
try:
1522
dbus.OBJECT_MANAGER_IFACE
1523
except AttributeError:
1524
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1525
1526
1527
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1528
"""A D-Bus object with an ObjectManager.
1529
1530
Classes inheriting from this exposes the standard
1531
GetManagedObjects call and the InterfacesAdded and
1532
InterfacesRemoved signals on the standard
1533
"org.freedesktop.DBus.ObjectManager" interface.
1534
1535
Note: No signals are sent automatically; they must be sent
1536
manually.
1537
"""
1538
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1539
out_signature="a{oa{sa{sv}}}")
1540
def GetManagedObjects(self):
1541
"""This function must be overridden"""
1542
raise NotImplementedError()
1543
1544
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1545
signature="oa{sa{sv}}")
1546
def InterfacesAdded(self, object_path, interfaces_and_properties):
1547
pass
1548
1549
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1550
def InterfacesRemoved(self, object_path, interfaces):
1551
pass
1552
1553
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1554
out_signature="s",
1555
path_keyword='object_path',
1556
connection_keyword='connection')
1557
def Introspect(self, object_path, connection):
1558
"""Overloading of standard D-Bus method.
1559
1560
Override return argument name of GetManagedObjects to be
1561
"objpath_interfaces_and_properties"
1562
"""
1563
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1564
object_path,
1565
connection)
1566
try:
1567
document = xml.dom.minidom.parseString(xmlstring)
1568
1569
for if_tag in document.getElementsByTagName("interface"):
1570
# Fix argument name for the GetManagedObjects method
1571
if (if_tag.getAttribute("name")
1572
== dbus.OBJECT_MANAGER_IFACE):
1573
for cn in if_tag.getElementsByTagName("method"):
1574
if (cn.getAttribute("name")
1575
== "GetManagedObjects"):
1576
for arg in cn.getElementsByTagName("arg"):
1577
if (arg.getAttribute("direction")
1578
== "out"):
1579
arg.setAttribute(
1580
"name",
1581
"objpath_interfaces"
1582
"_and_properties")
1583
xmlstring = document.toxml("utf-8")
1584
document.unlink()
1585
except (AttributeError, xml.dom.DOMException,
1586
xml.parsers.expat.ExpatError) as error:
1587
logger.error("Failed to override Introspection method",
1588
exc_info=error)
1589
return xmlstring
1590
1591
1592
def datetime_to_dbus(dt, variant_level=0):
923
1593
"""Convert a UTC datetime.datetime() to a D-Bus type."""
924
1594
if dt is None:
925
return dbus.String("", variant_level = variant_level)
926
return dbus.String(dt.isoformat(),
927
variant_level=variant_level)
928
929
930
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
931
.__metaclass__):
932
"""Applied to an empty subclass of a D-Bus object, this metaclass
933
will add additional D-Bus attributes matching a certain pattern.
1595
return dbus.String("", variant_level=variant_level)
1596
return dbus.String(dt.isoformat(), variant_level=variant_level)
1597
1598
1599
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1600
"""A class decorator; applied to a subclass of
1601
dbus.service.Object, it will add alternate D-Bus attributes with
1602
interface names according to the "alt_interface_names" mapping.
1603
Usage:
1604
1605
@alternate_dbus_interfaces({"org.example.Interface":
1606
"net.example.AlternateInterface"})
1607
class SampleDBusObject(dbus.service.Object):
1608
@dbus.service.method("org.example.Interface")
1609
def SampleDBusMethod():
1610
pass
1611
1612
The above "SampleDBusMethod" on "SampleDBusObject" will be
1613
reachable via two interfaces: "org.example.Interface" and
1614
"net.example.AlternateInterface", the latter of which will have
1615
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1616
"true", unless "deprecate" is passed with a False value.
1617
1618
This works for methods and signals, and also for D-Bus properties
1619
(from DBusObjectWithProperties) and interfaces (from the
1620
dbus_interface_annotations decorator).
934
1621
"""
935
def __new__(mcs, name, bases, attr):
936
# Go through all the base classes which could have D-Bus
937
# methods, signals, or properties in them
938
for base in (b for b in bases
939
if issubclass(b, dbus.service.Object)):
940
# Go though all attributes of the base class
941
for attrname, attribute in inspect.getmembers(base):
1622
1623
def wrapper(cls):
1624
for orig_interface_name, alt_interface_name in (
1625
alt_interface_names.items()):
1626
attr = {}
1627
interface_names = set()
1628
# Go though all attributes of the class
1629
for attrname, attribute in inspect.getmembers(cls):
942
1630
# Ignore non-D-Bus attributes, and D-Bus attributes
943
1631
# with the wrong interface name
944
1632
if (not hasattr(attribute, "_dbus_interface")
945
or not attribute._dbus_interface
946
.startswith("se.recompile.Mandos")):
1633
or not attribute._dbus_interface.startswith(
1634
orig_interface_name)):
947
1635
continue
948
1636
# Create an alternate D-Bus interface name based on
949
1637
# the current name
950
alt_interface = (attribute._dbus_interface
951
.replace("se.recompile.Mandos",
952
"se.bsnet.fukt.Mandos"))
1638
alt_interface = attribute._dbus_interface.replace(
1639
orig_interface_name, alt_interface_name)
1640
interface_names.add(alt_interface)
953
1641
# Is this a D-Bus signal?
954
1642
if getattr(attribute, "_dbus_is_signal", False):
955
# Extract the original non-method function by
956
# black magic
957
nonmethod_func = (dict(
1643
# Extract the original non-method undecorated
1644
# function by black magic
1645
if sys.version_info.major == 2:
1646
nonmethod_func = (dict(
958
1647
zip(attribute.func_code.co_freevars,
959
attribute.__closure__))["func"]
960
.cell_contents)
1648
attribute.__closure__))
1649
["func"].cell_contents)
1650
else:
1651
nonmethod_func = (dict(
1652
zip(attribute.__code__.co_freevars,
1653
attribute.__closure__))
1654
["func"].cell_contents)
961
1655
# Create a new, but exactly alike, function
962
1656
# object, and decorate it to be a new D-Bus signal
963
1657
# with the alternate D-Bus interface name
964
new_function = (dbus.service.signal
965
(alt_interface,
966
attribute._dbus_signature)
967
(types.FunctionType(
968
nonmethod_func.func_code,
969
nonmethod_func.func_globals,
970
nonmethod_func.func_name,
971
nonmethod_func.func_defaults,
972
nonmethod_func.func_closure)))
1658
new_function = copy_function(nonmethod_func)
1659
new_function = (dbus.service.signal(
1660
alt_interface,
1661
attribute._dbus_signature)(new_function))
1662
# Copy annotations, if any
1663
try:
1664
new_function._dbus_annotations = dict(
1665
attribute._dbus_annotations)
1666
except AttributeError:
1667
pass
1668
973
1669
# Define a creator of a function to call both the
974
# old and new functions, so both the old and new
975
# signals gets sent when the function is called
1670
# original and alternate functions, so both the
1671
# original and alternate signals gets sent when
1672
# the function is called
976
1673
def fixscope(func1, func2):
977
1674
"""This function is a scope container to pass
978
1675
func1 and func2 to the "call_both" function
979
1676
outside of its arguments"""
1677
1678
@functools.wraps(func2)
980
1679
def call_both(*args, **kwargs):
981
1680
"""This function will emit two D-Bus
982
1681
signals by calling func1 and func2"""
983
1682
func1(*args, **kwargs)
984
1683
func2(*args, **kwargs)
1684
# Make wrapper function look like a D-Bus
1685
# signal
1686
for name, attr in inspect.getmembers(func2):
1687
if name.startswith("_dbus_"):
1688
setattr(call_both, name, attr)
1689
985
1690
return call_both
986
1691
# Create the "call_both" function and add it to
987
1692
# the class
988
attr[attrname] = fixscope(attribute,
989
new_function)
1693
attr[attrname] = fixscope(attribute, new_function)
990
1694
# Is this a D-Bus method?
991
1695
elif getattr(attribute, "_dbus_is_method", False):
992
1696
# Create a new, but exactly alike, function
993
1697
# object. Decorate it to be a new D-Bus method
994
1698
# with the alternate D-Bus interface name. Add it
995
1699
# to the class.
996
attr[attrname] = (dbus.service.method
997
(alt_interface,
998
attribute._dbus_in_signature,
999
attribute._dbus_out_signature)
1000
(types.FunctionType
1001
(attribute.func_code,
1002
attribute.func_globals,
1003
attribute.func_name,
1004
attribute.func_defaults,
1005
attribute.func_closure)))
1700
attr[attrname] = (
1701
dbus.service.method(
1702
alt_interface,
1703
attribute._dbus_in_signature,
1704
attribute._dbus_out_signature)
1705
(copy_function(attribute)))
1706
# Copy annotations, if any
1707
try:
1708
attr[attrname]._dbus_annotations = dict(
1709
attribute._dbus_annotations)
1710
except AttributeError:
1711
pass
1006
1712
# Is this a D-Bus property?
1007
1713
elif getattr(attribute, "_dbus_is_property", False):
1008
1714
# Create a new, but exactly alike, function
1009
1715
# object, and decorate it to be a new D-Bus
1010
1716
# property with the alternate D-Bus interface
1011
1717
# name. Add it to the class.
1012
attr[attrname] = (dbus_service_property
1013
(alt_interface,
1014
attribute._dbus_signature,
1015
attribute._dbus_access,
1016
attribute
1017
._dbus_get_args_options
1018
["byte_arrays"])
1019
(types.FunctionType
1020
(attribute.func_code,
1021
attribute.func_globals,
1022
attribute.func_name,
1023
attribute.func_defaults,
1024
attribute.func_closure)))
1025
return type.__new__(mcs, name, bases, attr)
1026
1027
1718
attr[attrname] = (dbus_service_property(
1719
alt_interface, attribute._dbus_signature,
1720
attribute._dbus_access,
1721
attribute._dbus_get_args_options
1722
["byte_arrays"])
1723
(copy_function(attribute)))
1724
# Copy annotations, if any
1725
try:
1726
attr[attrname]._dbus_annotations = dict(
1727
attribute._dbus_annotations)
1728
except AttributeError:
1729
pass
1730
# Is this a D-Bus interface?
1731
elif getattr(attribute, "_dbus_is_interface", False):
1732
# Create a new, but exactly alike, function
1733
# object. Decorate it to be a new D-Bus interface
1734
# with the alternate D-Bus interface name. Add it
1735
# to the class.
1736
attr[attrname] = (
1737
dbus_interface_annotations(alt_interface)
1738
(copy_function(attribute)))
1739
if deprecate:
1740
# Deprecate all alternate interfaces
1741
iname = "_AlternateDBusNames_interface_annotation{}"
1742
for interface_name in interface_names:
1743
1744
@dbus_interface_annotations(interface_name)
1745
def func(self):
1746
return {"org.freedesktop.DBus.Deprecated":
1747
"true"}
1748
# Find an unused name
1749
for aname in (iname.format(i)
1750
for i in itertools.count()):
1751
if aname not in attr:
1752
attr[aname] = func
1753
break
1754
if interface_names:
1755
# Replace the class with a new subclass of it with
1756
# methods, signals, etc. as created above.
1757
if sys.version_info.major == 2:
1758
cls = type(b"{}Alternate".format(cls.__name__),
1759
(cls, ), attr)
1760
else:
1761
cls = type("{}Alternate".format(cls.__name__),
1762
(cls, ), attr)
1763
return cls
1764
1765
return wrapper
1766
1767
1768
@alternate_dbus_interfaces({"se.recompile.Mandos":
1769
"se.bsnet.fukt.Mandos"})
1028
1770
class ClientDBus(Client, DBusObjectWithProperties):
1029
1771
"""A Client class using D-Bus
1030
1772
1031
1773
Attributes:
1032
1774
dbus_object_path: dbus.ObjectPath
1033
1775
bus: dbus.SystemBus()
1034
1776
"""
1035
1777
1036
1778
runtime_expansions = (Client.runtime_expansions
1037
+ ("dbus_object_path",))
1038
1779
+ ("dbus_object_path", ))
1780
1781
_interface = "se.recompile.Mandos.Client"
1782
1039
1783
# dbus.service.Object doesn't use super(), so we can't either.
1040
1041
def __init__(self, bus = None, *args, **kwargs):
1784
1785
def __init__(self, bus=None, *args, **kwargs):
1042
1786
self.bus = bus
1043
1787
Client.__init__(self, *args, **kwargs)
1044
self._approvals_pending = 0
1045
1046
self._approvals_pending = 0
1047
1788
# Only now, when this client is initialized, can it show up on
1048
1789
# the D-Bus
1049
client_object_name = unicode(self.name).translate(
1790
client_object_name = str(self.name).translate(
1050
1791
{ord("."): ord("_"),
1051
1792
ord("-"): ord("_")})
1052
self.dbus_object_path = (dbus.ObjectPath
1053
("/clients/" + client_object_name))
1793
self.dbus_object_path = dbus.ObjectPath(
1794
"/clients/" + client_object_name)
1054
1795
DBusObjectWithProperties.__init__(self, self.bus,
1055
1796
self.dbus_object_path)
1056
1057
def notifychangeproperty(transform_func,
1058
dbus_name, type_func=lambda x: x,
1059
variant_level=1):
1797
1798
def notifychangeproperty(transform_func, dbus_name,
1799
type_func=lambda x: x,
1800
variant_level=1,
1801
invalidate_only=False,
1802
_interface=_interface):
1060
1803
""" Modify a variable so that it's a property which announces
1061
1804
its changes to DBus.
1062
1805
1063
1806
transform_fun: Function that takes a value and a variant_level
1064
1807
and transforms it to a D-Bus type.
1065
1808
dbus_name: D-Bus name of the variable
1067
1810
to the D-Bus. Default: no transform
1068
1811
variant_level: D-Bus variant level. Default: 1
1069
1812
"""
1070
attrname = "_{0}".format(dbus_name)
1813
attrname = "_{}".format(dbus_name)
1814
1071
1815
def setter(self, value):
1072
1816
if hasattr(self, "dbus_object_path"):
1073
1817
if (not hasattr(self, attrname) or
1074
1818
type_func(getattr(self, attrname, None))
1075
1819
!= type_func(value)):
1076
dbus_value = transform_func(type_func(value),
1077
variant_level
1078
=variant_level)
1079
self.PropertyChanged(dbus.String(dbus_name),
1080
dbus_value)
1820
if invalidate_only:
1821
self.PropertiesChanged(
1822
_interface, dbus.Dictionary(),
1823
dbus.Array((dbus_name, )))
1824
else:
1825
dbus_value = transform_func(
1826
type_func(value),
1827
variant_level=variant_level)
1828
self.PropertyChanged(dbus.String(dbus_name),
1829
dbus_value)
1830
self.PropertiesChanged(
1831
_interface,
1832
dbus.Dictionary({dbus.String(dbus_name):
1833
dbus_value}),
1834
dbus.Array())
1081
1835
setattr(self, attrname, value)
1082
1836
1083
1837
return property(lambda self: getattr(self, attrname), setter)
1084
1085
1838
1086
1839
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1087
1840
approvals_pending = notifychangeproperty(dbus.Boolean,
1088
1841
"ApprovalPending",
1089
type_func = bool)
1842
type_func=bool)
1090
1843
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1091
1844
last_enabled = notifychangeproperty(datetime_to_dbus,
1092
1845
"LastEnabled")
1093
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1094
type_func = lambda checker:
1095
checker is not None)
1846
checker = notifychangeproperty(
1847
dbus.Boolean, "CheckerRunning",
1848
type_func=lambda checker: checker is not None)
1096
1849
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1097
1850
"LastCheckedOK")
1851
last_checker_status = notifychangeproperty(dbus.Int16,
1852
"LastCheckerStatus")
1098
1853
last_approval_request = notifychangeproperty(
1099
1854
datetime_to_dbus, "LastApprovalRequest")
1100
1855
approved_by_default = notifychangeproperty(dbus.Boolean,
1101
1856
"ApprovedByDefault")
1102
approval_delay = notifychangeproperty(dbus.UInt64,
1103
"ApprovalDelay",
1104
type_func =
1105
timedelta_to_milliseconds)
1857
approval_delay = notifychangeproperty(
1858
dbus.UInt64, "ApprovalDelay",
1859
type_func=lambda td: td.total_seconds() * 1000)
1106
1860
approval_duration = notifychangeproperty(
1107
1861
dbus.UInt64, "ApprovalDuration",
1108
type_func = timedelta_to_milliseconds)
1862
type_func=lambda td: td.total_seconds() * 1000)
1109
1863
host = notifychangeproperty(dbus.String, "Host")
1110
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1111
type_func =
1112
timedelta_to_milliseconds)
1864
timeout = notifychangeproperty(
1865
dbus.UInt64, "Timeout",
1866
type_func=lambda td: td.total_seconds() * 1000)
1113
1867
extended_timeout = notifychangeproperty(
1114
1868
dbus.UInt64, "ExtendedTimeout",
1115
type_func = timedelta_to_milliseconds)
1116
interval = notifychangeproperty(dbus.UInt64,
1117
"Interval",
1118
type_func =
1119
timedelta_to_milliseconds)
1869
type_func=lambda td: td.total_seconds() * 1000)
1870
interval = notifychangeproperty(
1871
dbus.UInt64, "Interval",
1872
type_func=lambda td: td.total_seconds() * 1000)
1120
1873
checker_command = notifychangeproperty(dbus.String, "Checker")
1121
1874
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1875
invalidate_only=True)
1876
1122
1877
del notifychangeproperty
1123
1878
1124
1879
def __del__(self, *args, **kwargs):
1125
1880
try:
1126
1881
self.remove_from_connection()
1129
1884
if hasattr(DBusObjectWithProperties, "__del__"):
1130
1885
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1131
1886
Client.__del__(self, *args, **kwargs)
1132
1133
def checker_callback(self, pid, condition, command,
1134
*args, **kwargs):
1135
self.checker_callback_tag = None
1136
self.checker = None
1137
if os.WIFEXITED(condition):
1138
exitstatus = os.WEXITSTATUS(condition)
1887
1888
def checker_callback(self, source, condition,
1889
connection, command, *args, **kwargs):
1890
ret = Client.checker_callback(self, source, condition,
1891
connection, command, *args,
1892
**kwargs)
1893
exitstatus = self.last_checker_status
1894
if exitstatus >= 0:
1139
1895
# Emit D-Bus signal
1140
1896
self.CheckerCompleted(dbus.Int16(exitstatus),
1141
dbus.Int64(condition),
1897
# This is specific to GNU libC
1898
dbus.Int64(exitstatus << 8),
1142
1899
dbus.String(command))
1143
1900
else:
1144
1901
# Emit D-Bus signal
1145
1902
self.CheckerCompleted(dbus.Int16(-1),
1146
dbus.Int64(condition),
1903
dbus.Int64(
1904
# This is specific to GNU libC
1905
(exitstatus << 8)
1906
| self.last_checker_signal),
1147
1907
dbus.String(command))
1148
1149
return Client.checker_callback(self, pid, condition, command,
1150
*args, **kwargs)
1151
1908
return ret
1909
1152
1910
def start_checker(self, *args, **kwargs):
1153
old_checker = self.checker
1154
if self.checker is not None:
1155
old_checker_pid = self.checker.pid
1156
else:
1157
old_checker_pid = None
1911
old_checker_pid = getattr(self.checker, "pid", None)
1158
1912
r = Client.start_checker(self, *args, **kwargs)
1159
1913
# Only if new checker process was started
1160
1914
if (self.checker is not None
1162
1916
# Emit D-Bus signal
1163
1917
self.CheckerStarted(self.current_checker_command)
1164
1918
return r
1165
1919
1166
1920
def _reset_approved(self):
1167
1921
self.approved = None
1168
1922
return False
1169
1923
1170
1924
def approve(self, value=True):
1171
self.send_changedstate()
1172
1925
self.approved = value
1173
gobject.timeout_add(timedelta_to_milliseconds
1174
(self.approval_duration),
1175
self._reset_approved)
1176
1177
1178
## D-Bus methods, signals & properties
1179
_interface = "se.recompile.Mandos.Client"
1180
1181
## Signals
1182
1926
GLib.timeout_add(int(self.approval_duration.total_seconds()
1927
* 1000), self._reset_approved)
1928
self.send_changedstate()
1929
1930
# D-Bus methods, signals & properties
1931
1932
# Interfaces
1933
1934
# Signals
1935
1183
1936
# CheckerCompleted - signal
1184
1937
@dbus.service.signal(_interface, signature="nxs")
1185
1938
def CheckerCompleted(self, exitcode, waitstatus, command):
1186
1939
"D-Bus signal"
1187
1940
pass
1188
1941
1189
1942
# CheckerStarted - signal
1190
1943
@dbus.service.signal(_interface, signature="s")
1191
1944
def CheckerStarted(self, command):
1192
1945
"D-Bus signal"
1193
1946
pass
1194
1947
1195
1948
# PropertyChanged - signal
1949
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1196
1950
@dbus.service.signal(_interface, signature="sv")
1197
1951
def PropertyChanged(self, property, value):
1198
1952
"D-Bus signal"
1199
1953
pass
1200
1954
1201
1955
# GotSecret - signal
1202
1956
@dbus.service.signal(_interface)
1203
1957
def GotSecret(self):
1206
1960
server to mandos-client
1207
1961
"""
1208
1962
pass
1209
1963
1210
1964
# Rejected - signal
1211
1965
@dbus.service.signal(_interface, signature="s")
1212
1966
def Rejected(self, reason):
1213
1967
"D-Bus signal"
1214
1968
pass
1215
1969
1216
1970
# NeedApproval - signal
1217
1971
@dbus.service.signal(_interface, signature="tb")
1218
1972
def NeedApproval(self, timeout, default):
1219
1973
"D-Bus signal"
1220
1974
return self.need_approval()
1221
1222
# NeRwequest - signal
1223
@dbus.service.signal(_interface, signature="s")
1224
def NewRequest(self, ip):
1225
"""D-Bus signal
1226
Is sent after a client request a password.
1227
"""
1228
pass
1229
1230
## Methods
1231
1975
1976
# Methods
1977
1232
1978
# Approve - method
1233
1979
@dbus.service.method(_interface, in_signature="b")
1234
1980
def Approve(self, value):
1235
1981
self.approve(value)
1236
1982
1237
1983
# CheckedOK - method
1238
1984
@dbus.service.method(_interface)
1239
1985
def CheckedOK(self):
1240
1986
self.checked_ok()
1241
1987
1242
1988
# Enable - method
1989
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1243
1990
@dbus.service.method(_interface)
1244
1991
def Enable(self):
1245
1992
"D-Bus method"
1246
1993
self.enable()
1247
1994
1248
1995
# StartChecker - method
1996
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1249
1997
@dbus.service.method(_interface)
1250
1998
def StartChecker(self):
1251
1999
"D-Bus method"
1252
2000
self.start_checker()
1253
2001
1254
2002
# Disable - method
2003
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1255
2004
@dbus.service.method(_interface)
1256
2005
def Disable(self):
1257
2006
"D-Bus method"
1258
2007
self.disable()
1259
2008
1260
2009
# StopChecker - method
2010
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1261
2011
@dbus.service.method(_interface)
1262
2012
def StopChecker(self):
1263
2013
self.stop_checker()
1264
1265
## Properties
1266
2014
2015
# Properties
2016
1267
2017
# ApprovalPending - property
1268
2018
@dbus_service_property(_interface, signature="b", access="read")
1269
2019
def ApprovalPending_dbus_property(self):
1270
2020
return dbus.Boolean(bool(self.approvals_pending))
1271
2021
1272
2022
# ApprovedByDefault - property
1273
@dbus_service_property(_interface, signature="b",
2023
@dbus_service_property(_interface,
2024
signature="b",
1274
2025
access="readwrite")
1275
2026
def ApprovedByDefault_dbus_property(self, value=None):
1276
2027
if value is None: # get
1277
2028
return dbus.Boolean(self.approved_by_default)
1278
2029
self.approved_by_default = bool(value)
1279
2030
1280
2031
# ApprovalDelay - property
1281
@dbus_service_property(_interface, signature="t",
2032
@dbus_service_property(_interface,
2033
signature="t",
1282
2034
access="readwrite")
1283
2035
def ApprovalDelay_dbus_property(self, value=None):
1284
2036
if value is None: # get
1285
return dbus.UInt64(self.approval_delay_milliseconds())
2037
return dbus.UInt64(self.approval_delay.total_seconds()
2038
* 1000)
1286
2039
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1287
2040
1288
2041
# ApprovalDuration - property
1289
@dbus_service_property(_interface, signature="t",
2042
@dbus_service_property(_interface,
2043
signature="t",
1290
2044
access="readwrite")
1291
2045
def ApprovalDuration_dbus_property(self, value=None):
1292
2046
if value is None: # get
1293
return dbus.UInt64(timedelta_to_milliseconds(
1294
self.approval_duration))
2047
return dbus.UInt64(self.approval_duration.total_seconds()
2048
* 1000)
1295
2049
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1296
2050
1297
2051
# Name - property
2052
@dbus_annotations(
2053
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1298
2054
@dbus_service_property(_interface, signature="s", access="read")
1299
2055
def Name_dbus_property(self):
1300
2056
return dbus.String(self.name)
1301
2057
2058
# KeyID - property
2059
@dbus_annotations(
2060
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2061
@dbus_service_property(_interface, signature="s", access="read")
2062
def KeyID_dbus_property(self):
2063
return dbus.String(self.key_id)
2064
1302
2065
# Fingerprint - property
2066
@dbus_annotations(
2067
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1303
2068
@dbus_service_property(_interface, signature="s", access="read")
1304
2069
def Fingerprint_dbus_property(self):
1305
2070
return dbus.String(self.fingerprint)
1306
2071
1307
2072
# Host - property
1308
@dbus_service_property(_interface, signature="s",
2073
@dbus_service_property(_interface,
2074
signature="s",
1309
2075
access="readwrite")
1310
2076
def Host_dbus_property(self, value=None):
1311
2077
if value is None: # get
1312
2078
return dbus.String(self.host)
1313
self.host = unicode(value)
1314
2079
self.host = str(value)
2080
1315
2081
# Created - property
2082
@dbus_annotations(
2083
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1316
2084
@dbus_service_property(_interface, signature="s", access="read")
1317
2085
def Created_dbus_property(self):
1318
2086
return datetime_to_dbus(self.created)
1319
2087
1320
2088
# LastEnabled - property
1321
2089
@dbus_service_property(_interface, signature="s", access="read")
1322
2090
def LastEnabled_dbus_property(self):
1323
2091
return datetime_to_dbus(self.last_enabled)
1324
2092
1325
2093
# Enabled - property
1326
@dbus_service_property(_interface, signature="b",
2094
@dbus_service_property(_interface,
2095
signature="b",
1327
2096
access="readwrite")
1328
2097
def Enabled_dbus_property(self, value=None):
1329
2098
if value is None: # get
1332
2101
self.enable()
1333
2102
else:
1334
2103
self.disable()
1335
2104
1336
2105
# LastCheckedOK - property
1337
@dbus_service_property(_interface, signature="s",
2106
@dbus_service_property(_interface,
2107
signature="s",
1338
2108
access="readwrite")
1339
2109
def LastCheckedOK_dbus_property(self, value=None):
1340
2110
if value is not None:
1341
2111
self.checked_ok()
1342
2112
return
1343
2113
return datetime_to_dbus(self.last_checked_ok)
1344
2114
2115
# LastCheckerStatus - property
2116
@dbus_service_property(_interface, signature="n", access="read")
2117
def LastCheckerStatus_dbus_property(self):
2118
return dbus.Int16(self.last_checker_status)
2119
1345
2120
# Expires - property
1346
2121
@dbus_service_property(_interface, signature="s", access="read")
1347
2122
def Expires_dbus_property(self):
1348
2123
return datetime_to_dbus(self.expires)
1349
2124
1350
2125
# LastApprovalRequest - property
1351
2126
@dbus_service_property(_interface, signature="s", access="read")
1352
2127
def LastApprovalRequest_dbus_property(self):
1353
2128
return datetime_to_dbus(self.last_approval_request)
1354
2129
1355
2130
# Timeout - property
1356
@dbus_service_property(_interface, signature="t",
2131
@dbus_service_property(_interface,
2132
signature="t",
1357
2133
access="readwrite")
1358
2134
def Timeout_dbus_property(self, value=None):
1359
2135
if value is None: # get
1360
return dbus.UInt64(self.timeout_milliseconds())
2136
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2137
old_timeout = self.timeout
1361
2138
self.timeout = datetime.timedelta(0, 0, 0, value)
1362
if getattr(self, "disable_initiator_tag", None) is None:
1363
return
1364
# Reschedule timeout
1365
gobject.source_remove(self.disable_initiator_tag)
1366
self.disable_initiator_tag = None
1367
self.expires = None
1368
time_to_die = timedelta_to_milliseconds((self
1369
.last_checked_ok
1370
+ self.timeout)
1371
- datetime.datetime
1372
.utcnow())
1373
if time_to_die <= 0:
1374
# The timeout has passed
1375
self.disable()
1376
else:
1377
self.expires = (datetime.datetime.utcnow()
1378
+ datetime.timedelta(milliseconds =
1379
time_to_die))
1380
self.disable_initiator_tag = (gobject.timeout_add
1381
(time_to_die, self.disable))
1382
2139
# Reschedule disabling
2140
if self.enabled:
2141
now = datetime.datetime.utcnow()
2142
self.expires += self.timeout - old_timeout
2143
if self.expires <= now:
2144
# The timeout has passed
2145
self.disable()
2146
else:
2147
if (getattr(self, "disable_initiator_tag", None)
2148
is None):
2149
return
2150
GLib.source_remove(self.disable_initiator_tag)
2151
self.disable_initiator_tag = GLib.timeout_add(
2152
int((self.expires - now).total_seconds() * 1000),
2153
self.disable)
2154
1383
2155
# ExtendedTimeout - property
1384
@dbus_service_property(_interface, signature="t",
2156
@dbus_service_property(_interface,
2157
signature="t",
1385
2158
access="readwrite")
1386
2159
def ExtendedTimeout_dbus_property(self, value=None):
1387
2160
if value is None: # get
1388
return dbus.UInt64(self.extended_timeout_milliseconds())
2161
return dbus.UInt64(self.extended_timeout.total_seconds()
2162
* 1000)
1389
2163
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1390
2164
1391
2165
# Interval - property
1392
@dbus_service_property(_interface, signature="t",
2166
@dbus_service_property(_interface,
2167
signature="t",
1393
2168
access="readwrite")
1394
2169
def Interval_dbus_property(self, value=None):
1395
2170
if value is None: # get
1396
return dbus.UInt64(self.interval_milliseconds())
2171
return dbus.UInt64(self.interval.total_seconds() * 1000)
1397
2172
self.interval = datetime.timedelta(0, 0, 0, value)
1398
2173
if getattr(self, "checker_initiator_tag", None) is None:
1399
2174
return
1400
2175
if self.enabled:
1401
2176
# Reschedule checker run
1402
gobject.source_remove(self.checker_initiator_tag)
1403
self.checker_initiator_tag = (gobject.timeout_add
1404
(value, self.start_checker))
1405
self.start_checker() # Start one now, too
1406
2177
GLib.source_remove(self.checker_initiator_tag)
2178
self.checker_initiator_tag = GLib.timeout_add(
2179
value, self.start_checker)
2180
self.start_checker() # Start one now, too
2181
1407
2182
# Checker - property
1408
@dbus_service_property(_interface, signature="s",
2183
@dbus_service_property(_interface,
2184
signature="s",
1409
2185
access="readwrite")
1410
2186
def Checker_dbus_property(self, value=None):
1411
2187
if value is None: # get
1412
2188
return dbus.String(self.checker_command)
1413
self.checker_command = unicode(value)
1414
2189
self.checker_command = str(value)
2190
1415
2191
# CheckerRunning - property
1416
@dbus_service_property(_interface, signature="b",
2192
@dbus_service_property(_interface,
2193
signature="b",
1417
2194
access="readwrite")
1418
2195
def CheckerRunning_dbus_property(self, value=None):
1419
2196
if value is None: # get
1422
2199
self.start_checker()
1423
2200
else:
1424
2201
self.stop_checker()
1425
2202
1426
2203
# ObjectPath - property
2204
@dbus_annotations(
2205
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2206
"org.freedesktop.DBus.Deprecated": "true"})
1427
2207
@dbus_service_property(_interface, signature="o", access="read")
1428
2208
def ObjectPath_dbus_property(self):
1429
return self.dbus_object_path # is already a dbus.ObjectPath
1430
2209
return self.dbus_object_path # is already a dbus.ObjectPath
2210
1431
2211
# Secret = property
1432
@dbus_service_property(_interface, signature="ay",
1433
access="write", byte_arrays=True)
2212
@dbus_annotations(
2213
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2214
"invalidates"})
2215
@dbus_service_property(_interface,
2216
signature="ay",
2217
access="write",
2218
byte_arrays=True)
1434
2219
def Secret_dbus_property(self, value):
1435
self.secret = str(value)
1436
2220
self.secret = bytes(value)
2221
1437
2222
del _interface
1438
2223
1439
2224
1440
class ProxyClient(object):
1441
def __init__(self, child_pipe, fpr, address):
2225
class ProxyClient:
2226
def __init__(self, child_pipe, key_id, fpr, address):
1442
2227
self._pipe = child_pipe
1443
self._pipe.send(('init', fpr, address))
2228
self._pipe.send(('init', key_id, fpr, address))
1444
2229
if not self._pipe.recv():
1445
raise KeyError()
1446
2230
raise KeyError(key_id or fpr)
2231
1447
2232
def __getattribute__(self, name):
1448
2233
if name == '_pipe':
1449
2234
return super(ProxyClient, self).__getattribute__(name)
1452
2237
if data[0] == 'data':
1453
2238
return data[1]
1454
2239
if data[0] == 'function':
2240
1455
2241
def func(*args, **kwargs):
1456
2242
self._pipe.send(('funcall', name, args, kwargs))
1457
2243
return self._pipe.recv()[1]
2244
1458
2245
return func
1459
2246
1460
2247
def __setattr__(self, name, value):
1461
2248
if name == '_pipe':
1462
2249
return super(ProxyClient, self).__setattr__(name, value)
1463
2250
self._pipe.send(('setattr', name, value))
1464
2251
1465
2252
1466
class ClientDBusTransitional(ClientDBus):
1467
__metaclass__ = AlternateDBusNamesMetaclass
1468
1469
1470
2253
class ClientHandler(socketserver.BaseRequestHandler, object):
1471
2254
"""A class to handle client connections.
1472
2255
1473
2256
Instantiated once for each connection to handle it.
1474
2257
Note: This will run in its own forked process."""
1475
2258
1476
2259
def handle(self):
1477
2260
with contextlib.closing(self.server.child_pipe) as child_pipe:
1478
2261
logger.info("TCP connection from: %s",
1479
unicode(self.client_address))
2262
str(self.client_address))
1480
2263
logger.debug("Pipe FD: %d",
1481
2264
self.server.child_pipe.fileno())
1482
1483
session = (gnutls.connection
1484
.ClientSession(self.request,
1485
gnutls.connection
1486
.X509Credentials()))
1487
1488
# Note: gnutls.connection.X509Credentials is really a
1489
# generic GnuTLS certificate credentials object so long as
1490
# no X.509 keys are added to it. Therefore, we can use it
1491
# here despite using OpenPGP certificates.
1492
1493
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1494
# "+AES-256-CBC", "+SHA1",
1495
# "+COMP-NULL", "+CTYPE-OPENPGP",
1496
# "+DHE-DSS"))
2265
2266
session = gnutls.ClientSession(self.request)
2267
2268
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2269
# "+AES-256-CBC", "+SHA1",
2270
# "+COMP-NULL", "+CTYPE-OPENPGP",
2271
# "+DHE-DSS"))
1497
2272
# Use a fallback default, since this MUST be set.
1498
2273
priority = self.server.gnutls_priority
1499
2274
if priority is None:
1500
2275
priority = "NORMAL"
1501
(gnutls.library.functions
1502
.gnutls_priority_set_direct(session._c_object,
1503
priority, None))
1504
2276
gnutls.priority_set_direct(session._c_object,
2277
priority.encode("utf-8"),
2278
None)
2279
1505
2280
# Start communication using the Mandos protocol
1506
2281
# Get protocol number
1507
2282
line = self.request.makefile().readline()
1508
2283
logger.debug("Protocol version: %r", line)
1509
2284
try:
1510
2285
if int(line.strip().split()[0]) > 1:
1511
raise RuntimeError
2286
raise RuntimeError(line)
1512
2287
except (ValueError, IndexError, RuntimeError) as error:
1513
2288
logger.error("Unknown protocol version: %s", error)
1514
2289
return
1515
2290
1516
2291
# Start GnuTLS connection
1517
2292
try:
1518
2293
session.handshake()
1519
except gnutls.errors.GNUTLSError as error:
2294
except gnutls.Error as error:
1520
2295
logger.warning("Handshake failed: %s", error)
1521
2296
# Do not run session.bye() here: the session is not
1522
2297
# established. Just abandon the request.
1523
2298
return
1524
2299
logger.debug("Handshake succeeded")
1525
2300
1526
2301
approval_required = False
1527
2302
try:
1528
try:
1529
fpr = self.fingerprint(self.peer_certificate
1530
(session))
1531
except (TypeError,
1532
gnutls.errors.GNUTLSError) as error:
1533
logger.warning("Bad certificate: %s", error)
1534
return
1535
logger.debug("Fingerprint: %s", fpr)
1536
1537
try:
1538
client = ProxyClient(child_pipe, fpr,
2303
if gnutls.has_rawpk:
2304
fpr = b""
2305
try:
2306
key_id = self.key_id(
2307
self.peer_certificate(session))
2308
except (TypeError, gnutls.Error) as error:
2309
logger.warning("Bad certificate: %s", error)
2310
return
2311
logger.debug("Key ID: %s", key_id)
2312
2313
else:
2314
key_id = b""
2315
try:
2316
fpr = self.fingerprint(
2317
self.peer_certificate(session))
2318
except (TypeError, gnutls.Error) as error:
2319
logger.warning("Bad certificate: %s", error)
2320
return
2321
logger.debug("Fingerprint: %s", fpr)
2322
2323
try:
2324
client = ProxyClient(child_pipe, key_id, fpr,
1539
2325
self.client_address)
1540
2326
except KeyError:
1541
2327
return
1542
1543
if self.server.use_dbus:
1544
# Emit D-Bus signal
1545
client.NewRequest(str(self.client_address))
1546
2328
1547
2329
if client.approval_delay:
1548
2330
delay = client.approval_delay
1549
2331
client.approvals_pending += 1
1550
2332
approval_required = True
1551
2333
1552
2334
while True:
1553
2335
if not client.enabled:
1554
2336
logger.info("Client %s is disabled",
1555
client.name)
2337
client.name)
1556
2338
if self.server.use_dbus:
1557
2339
# Emit D-Bus signal
1558
2340
client.Rejected("Disabled")
1559
2341
return
1560
2342
1561
2343
if client.approved or not client.approval_delay:
1562
#We are approved or approval is disabled
2344
# We are approved or approval is disabled
1563
2345
break
1564
2346
elif client.approved is None:
1565
2347
logger.info("Client %s needs approval",
1567
2349
if self.server.use_dbus:
1568
2350
# Emit D-Bus signal
1569
2351
client.NeedApproval(
1570
client.approval_delay_milliseconds(),
1571
client.approved_by_default)
2352
client.approval_delay.total_seconds()
2353
* 1000, client.approved_by_default)
1572
2354
else:
1573
2355
logger.warning("Client %s was not approved",
1574
2356
client.name)
1576
2358
# Emit D-Bus signal
1577
2359
client.Rejected("Denied")
1578
2360
return
1579
1580
#wait until timeout or approved
2361
2362
# wait until timeout or approved
1581
2363
time = datetime.datetime.now()
1582
2364
client.changedstate.acquire()
1583
(client.changedstate.wait
1584
(float(client.timedelta_to_milliseconds(delay)
1585
/ 1000)))
2365
client.changedstate.wait(delay.total_seconds())
1586
2366
client.changedstate.release()
1587
2367
time2 = datetime.datetime.now()
1588
2368
if (time2 - time) >= delay:
1598
2378
break
1599
2379
else:
1600
2380
delay -= time2 - time
1601
1602
sent_size = 0
1603
while sent_size < len(client.secret):
1604
try:
1605
sent = session.send(client.secret[sent_size:])
1606
except gnutls.errors.GNUTLSError as error:
1607
logger.warning("gnutls send failed")
1608
return
1609
logger.debug("Sent: %d, remaining: %d",
1610
sent, len(client.secret)
1611
- (sent_size + sent))
1612
sent_size += sent
1613
2381
2382
try:
2383
session.send(client.secret)
2384
except gnutls.Error as error:
2385
logger.warning("gnutls send failed",
2386
exc_info=error)
2387
return
2388
1614
2389
logger.info("Sending secret to %s", client.name)
1615
2390
# bump the timeout using extended_timeout
1616
client.checked_ok(client.extended_timeout)
2391
client.bump_timeout(client.extended_timeout)
1617
2392
if self.server.use_dbus:
1618
2393
# Emit D-Bus signal
1619
2394
client.GotSecret()
1620
2395
1621
2396
finally:
1622
2397
if approval_required:
1623
2398
client.approvals_pending -= 1
1624
2399
try:
1625
2400
session.bye()
1626
except gnutls.errors.GNUTLSError as error:
1627
logger.warning("GnuTLS bye failed")
1628
2401
except gnutls.Error as error:
2402
logger.warning("GnuTLS bye failed",
2403
exc_info=error)
2404
1629
2405
@staticmethod
1630
2406
def peer_certificate(session):
1631
"Return the peer's OpenPGP certificate as a bytestring"
1632
# If not an OpenPGP certificate...
1633
if (gnutls.library.functions
1634
.gnutls_certificate_type_get(session._c_object)
1635
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1636
# ...do the normal thing
1637
return session.peer_certificate
2407
"Return the peer's certificate as a bytestring"
2408
try:
2409
cert_type = gnutls.certificate_type_get2(session._c_object,
2410
gnutls.CTYPE_PEERS)
2411
except AttributeError:
2412
cert_type = gnutls.certificate_type_get(session._c_object)
2413
if gnutls.has_rawpk:
2414
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2415
else:
2416
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2417
# If not a valid certificate type...
2418
if cert_type not in valid_cert_types:
2419
logger.info("Cert type %r not in %r", cert_type,
2420
valid_cert_types)
2421
# ...return invalid data
2422
return b""
1638
2423
list_size = ctypes.c_uint(1)
1639
cert_list = (gnutls.library.functions
1640
.gnutls_certificate_get_peers
2424
cert_list = (gnutls.certificate_get_peers
1641
2425
(session._c_object, ctypes.byref(list_size)))
1642
2426
if not bool(cert_list) and list_size.value != 0:
1643
raise gnutls.errors.GNUTLSError("error getting peer"
1644
" certificate")
2427
raise gnutls.Error("error getting peer certificate")
1645
2428
if list_size.value == 0:
1646
2429
return None
1647
2430
cert = cert_list[0]
1648
2431
return ctypes.string_at(cert.data, cert.size)
1649
2432
2433
@staticmethod
2434
def key_id(certificate):
2435
"Convert a certificate bytestring to a hexdigit key ID"
2436
# New GnuTLS "datum" with the public key
2437
datum = gnutls.datum_t(
2438
ctypes.cast(ctypes.c_char_p(certificate),
2439
ctypes.POINTER(ctypes.c_ubyte)),
2440
ctypes.c_uint(len(certificate)))
2441
# XXX all these need to be created in the gnutls "module"
2442
# New empty GnuTLS certificate
2443
pubkey = gnutls.pubkey_t()
2444
gnutls.pubkey_init(ctypes.byref(pubkey))
2445
# Import the raw public key into the certificate
2446
gnutls.pubkey_import(pubkey,
2447
ctypes.byref(datum),
2448
gnutls.X509_FMT_DER)
2449
# New buffer for the key ID
2450
buf = ctypes.create_string_buffer(32)
2451
buf_len = ctypes.c_size_t(len(buf))
2452
# Get the key ID from the raw public key into the buffer
2453
gnutls.pubkey_get_key_id(pubkey,
2454
gnutls.KEYID_USE_SHA256,
2455
ctypes.cast(ctypes.byref(buf),
2456
ctypes.POINTER(ctypes.c_ubyte)),
2457
ctypes.byref(buf_len))
2458
# Deinit the certificate
2459
gnutls.pubkey_deinit(pubkey)
2460
2461
# Convert the buffer to a Python bytestring
2462
key_id = ctypes.string_at(buf, buf_len.value)
2463
# Convert the bytestring to hexadecimal notation
2464
hex_key_id = binascii.hexlify(key_id).upper()
2465
return hex_key_id
2466
1650
2467
@staticmethod
1651
2468
def fingerprint(openpgp):
1652
2469
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1653
2470
# New GnuTLS "datum" with the OpenPGP public key
1654
datum = (gnutls.library.types
1655
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1656
ctypes.POINTER
1657
(ctypes.c_ubyte)),
1658
ctypes.c_uint(len(openpgp))))
2471
datum = gnutls.datum_t(
2472
ctypes.cast(ctypes.c_char_p(openpgp),
2473
ctypes.POINTER(ctypes.c_ubyte)),
2474
ctypes.c_uint(len(openpgp)))
1659
2475
# New empty GnuTLS certificate
1660
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1661
(gnutls.library.functions
1662
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2476
crt = gnutls.openpgp_crt_t()
2477
gnutls.openpgp_crt_init(ctypes.byref(crt))
1663
2478
# Import the OpenPGP public key into the certificate
1664
(gnutls.library.functions
1665
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1666
gnutls.library.constants
1667
.GNUTLS_OPENPGP_FMT_RAW))
2479
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2480
gnutls.OPENPGP_FMT_RAW)
1668
2481
# Verify the self signature in the key
1669
2482
crtverify = ctypes.c_uint()
1670
(gnutls.library.functions
1671
.gnutls_openpgp_crt_verify_self(crt, 0,
1672
ctypes.byref(crtverify)))
2483
gnutls.openpgp_crt_verify_self(crt, 0,
2484
ctypes.byref(crtverify))
1673
2485
if crtverify.value != 0:
1674
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1675
raise (gnutls.errors.CertificateSecurityError
1676
("Verify failed"))
2486
gnutls.openpgp_crt_deinit(crt)
2487
raise gnutls.CertificateSecurityError(code
2488
=crtverify.value)
1677
2489
# New buffer for the fingerprint
1678
2490
buf = ctypes.create_string_buffer(20)
1679
2491
buf_len = ctypes.c_size_t()
1680
2492
# Get the fingerprint from the certificate into the buffer
1681
(gnutls.library.functions
1682
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1683
ctypes.byref(buf_len)))
2493
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2494
ctypes.byref(buf_len))
1684
2495
# Deinit the certificate
1685
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2496
gnutls.openpgp_crt_deinit(crt)
1686
2497
# Convert the buffer to a Python bytestring
1687
2498
fpr = ctypes.string_at(buf, buf_len.value)
1688
2499
# Convert the bytestring to hexadecimal notation
1690
2501
return hex_fpr
1691
2502
1692
2503
1693
class MultiprocessingMixIn(object):
2504
class MultiprocessingMixIn:
1694
2505
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2506
1695
2507
def sub_process_main(self, request, address):
1696
2508
try:
1697
2509
self.finish_request(request, address)
1698
2510
except Exception:
1699
2511
self.handle_error(request, address)
1700
2512
self.close_request(request)
1701
2513
1702
2514
def process_request(self, request, address):
1703
2515
"""Start a new process to process the request."""
1704
proc = multiprocessing.Process(target = self.sub_process_main,
1705
args = (request,
1706
address))
2516
proc = multiprocessing.Process(target=self.sub_process_main,
2517
args=(request, address))
1707
2518
proc.start()
1708
2519
return proc
1709
2520
1710
2521
1711
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2522
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1712
2523
""" adds a pipe to the MixIn """
2524
1713
2525
def process_request(self, request, client_address):
1714
2526
"""Overrides and wraps the original process_request().
1715
2527
1716
2528
This function creates a new pipe in self.pipe
1717
2529
"""
1718
2530
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1719
2531
1720
2532
proc = MultiprocessingMixIn.process_request(self, request,
1721
2533
client_address)
1722
2534
self.child_pipe.close()
1723
2535
self.add_pipe(parent_pipe, proc)
1724
2536
1725
2537
def add_pipe(self, parent_pipe, proc):
1726
2538
"""Dummy function; override as necessary"""
1727
raise NotImplementedError
2539
raise NotImplementedError()
1728
2540
1729
2541
1730
2542
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1731
socketserver.TCPServer, object):
2543
socketserver.TCPServer):
1732
2544
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1733
2545
1734
2546
Attributes:
1735
2547
enabled: Boolean; whether this server is activated yet
1736
2548
interface: None or a network interface name (string)
1737
2549
use_ipv6: Boolean; to use IPv6 or not
1738
2550
"""
2551
1739
2552
def __init__(self, server_address, RequestHandlerClass,
1740
interface=None, use_ipv6=True):
2553
interface=None,
2554
use_ipv6=True,
2555
socketfd=None):
2556
"""If socketfd is set, use that file descriptor instead of
2557
creating a new one with socket.socket().
2558
"""
1741
2559
self.interface = interface
1742
2560
if use_ipv6:
1743
2561
self.address_family = socket.AF_INET6
2562
if socketfd is not None:
2563
# Save the file descriptor
2564
self.socketfd = socketfd
2565
# Save the original socket.socket() function
2566
self.socket_socket = socket.socket
2567
2568
# To implement --socket, we monkey patch socket.socket.
2569
#
2570
# (When socketserver.TCPServer is a new-style class, we
2571
# could make self.socket into a property instead of monkey
2572
# patching socket.socket.)
2573
#
2574
# Create a one-time-only replacement for socket.socket()
2575
@functools.wraps(socket.socket)
2576
def socket_wrapper(*args, **kwargs):
2577
# Restore original function so subsequent calls are
2578
# not affected.
2579
socket.socket = self.socket_socket
2580
del self.socket_socket
2581
# This time only, return a new socket object from the
2582
# saved file descriptor.
2583
return socket.fromfd(self.socketfd, *args, **kwargs)
2584
# Replace socket.socket() function with wrapper
2585
socket.socket = socket_wrapper
2586
# The socketserver.TCPServer.__init__ will call
2587
# socket.socket(), which might be our replacement,
2588
# socket_wrapper(), if socketfd was set.
1744
2589
socketserver.TCPServer.__init__(self, server_address,
1745
2590
RequestHandlerClass)
2591
1746
2592
def server_bind(self):
1747
2593
"""This overrides the normal server_bind() function
1748
2594
to bind to an interface if one was specified, and also NOT to
1749
2595
bind to an address or port if they were not specified."""
2596
global SO_BINDTODEVICE
1750
2597
if self.interface is not None:
1751
2598
if SO_BINDTODEVICE is None:
1752
logger.error("SO_BINDTODEVICE does not exist;"
1753
" cannot bind to interface %s",
1754
self.interface)
1755
else:
1756
try:
1757
self.socket.setsockopt(socket.SOL_SOCKET,
1758
SO_BINDTODEVICE,
1759
str(self.interface
1760
+ '\0'))
1761
except socket.error as error:
1762
if error[0] == errno.EPERM:
1763
logger.error("No permission to"
1764
" bind to interface %s",
1765
self.interface)
1766
elif error[0] == errno.ENOPROTOOPT:
1767
logger.error("SO_BINDTODEVICE not available;"
1768
" cannot bind to interface %s",
1769
self.interface)
1770
else:
1771
raise
2599
# Fall back to a hard-coded value which seems to be
2600
# common enough.
2601
logger.warning("SO_BINDTODEVICE not found, trying 25")
2602
SO_BINDTODEVICE = 25
2603
try:
2604
self.socket.setsockopt(
2605
socket.SOL_SOCKET, SO_BINDTODEVICE,
2606
(self.interface + "\0").encode("utf-8"))
2607
except socket.error as error:
2608
if error.errno == errno.EPERM:
2609
logger.error("No permission to bind to"
2610
" interface %s", self.interface)
2611
elif error.errno == errno.ENOPROTOOPT:
2612
logger.error("SO_BINDTODEVICE not available;"
2613
" cannot bind to interface %s",
2614
self.interface)
2615
elif error.errno == errno.ENODEV:
2616
logger.error("Interface %s does not exist,"
2617
" cannot bind", self.interface)
2618
else:
2619
raise
1772
2620
# Only bind(2) the socket if we really need to.
1773
2621
if self.server_address[0] or self.server_address[1]:
2622
if self.server_address[1]:
2623
self.allow_reuse_address = True
1774
2624
if not self.server_address[0]:
1775
2625
if self.address_family == socket.AF_INET6:
1776
any_address = "::" # in6addr_any
2626
any_address = "::" # in6addr_any
1777
2627
else:
1778
any_address = socket.INADDR_ANY
2628
any_address = "0.0.0.0" # INADDR_ANY
1779
2629
self.server_address = (any_address,
1780
2630
self.server_address[1])
1781
2631
elif not self.server_address[1]:
1782
self.server_address = (self.server_address[0],
1783
0)
2632
self.server_address = (self.server_address[0], 0)
1784
2633
# if self.interface:
1785
2634
# self.server_address = (self.server_address[0],
1786
2635
# 0, # port
1792
2641
1793
2642
class MandosServer(IPv6_TCPServer):
1794
2643
"""Mandos server.
1795
2644
1796
2645
Attributes:
1797
2646
clients: set of Client objects
1798
2647
gnutls_priority GnuTLS priority string
1799
2648
use_dbus: Boolean; to emit D-Bus signals or not
1800
1801
Assumes a gobject.MainLoop event loop.
2649
2650
Assumes a GLib.MainLoop event loop.
1802
2651
"""
2652
1803
2653
def __init__(self, server_address, RequestHandlerClass,
1804
interface=None, use_ipv6=True, clients=None,
1805
gnutls_priority=None, use_dbus=True):
2654
interface=None,
2655
use_ipv6=True,
2656
clients=None,
2657
gnutls_priority=None,
2658
use_dbus=True,
2659
socketfd=None):
1806
2660
self.enabled = False
1807
2661
self.clients = clients
1808
2662
if self.clients is None:
1811
2665
self.gnutls_priority = gnutls_priority
1812
2666
IPv6_TCPServer.__init__(self, server_address,
1813
2667
RequestHandlerClass,
1814
interface = interface,
1815
use_ipv6 = use_ipv6)
2668
interface=interface,
2669
use_ipv6=use_ipv6,
2670
socketfd=socketfd)
2671
1816
2672
def server_activate(self):
1817
2673
if self.enabled:
1818
2674
return socketserver.TCPServer.server_activate(self)
1819
2675
1820
2676
def enable(self):
1821
2677
self.enabled = True
1822
2678
1823
2679
def add_pipe(self, parent_pipe, proc):
1824
2680
# Call "handle_ipc" for both data and EOF events
1825
gobject.io_add_watch(parent_pipe.fileno(),
1826
gobject.IO_IN | gobject.IO_HUP,
1827
functools.partial(self.handle_ipc,
1828
parent_pipe =
1829
parent_pipe,
1830
proc = proc))
1831
1832
def handle_ipc(self, source, condition, parent_pipe=None,
1833
proc = None, client_object=None):
1834
condition_names = {
1835
gobject.IO_IN: "IN", # There is data to read.
1836
gobject.IO_OUT: "OUT", # Data can be written (without
1837
# blocking).
1838
gobject.IO_PRI: "PRI", # There is urgent data to read.
1839
gobject.IO_ERR: "ERR", # Error condition.
1840
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1841
# broken, usually for pipes and
1842
# sockets).
1843
}
1844
conditions_string = ' | '.join(name
1845
for cond, name in
1846
condition_names.iteritems()
1847
if cond & condition)
2681
GLib.io_add_watch(
2682
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2683
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2684
functools.partial(self.handle_ipc,
2685
parent_pipe=parent_pipe,
2686
proc=proc))
2687
2688
def handle_ipc(self, source, condition,
2689
parent_pipe=None,
2690
proc=None,
2691
client_object=None):
1848
2692
# error, or the other end of multiprocessing.Pipe has closed
1849
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2693
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1850
2694
# Wait for other process to exit
1851
2695
proc.join()
1852
2696
return False
1853
2697
1854
2698
# Read a request from the child
1855
2699
request = parent_pipe.recv()
1856
2700
command = request[0]
1857
2701
1858
2702
if command == 'init':
1859
fpr = request[1]
1860
address = request[2]
1861
1862
for c in self.clients.itervalues():
1863
if c.fingerprint == fpr:
2703
key_id = request[1].decode("ascii")
2704
fpr = request[2].decode("ascii")
2705
address = request[3]
2706
2707
for c in self.clients.values():
2708
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2709
continue
2710
if key_id and c.key_id == key_id:
2711
client = c
2712
break
2713
if fpr and c.fingerprint == fpr:
1864
2714
client = c
1865
2715
break
1866
2716
else:
1867
logger.info("Client not found for fingerprint: %s, ad"
1868
"dress: %s", fpr, address)
2717
logger.info("Client not found for key ID: %s, address"
2718
": %s", key_id or fpr, address)
1869
2719
if self.use_dbus:
1870
2720
# Emit D-Bus signal
1871
mandos_dbus_service.ClientNotFound(fpr,
2721
mandos_dbus_service.ClientNotFound(key_id or fpr,
1872
2722
address[0])
1873
2723
parent_pipe.send(False)
1874
2724
return False
1875
1876
gobject.io_add_watch(parent_pipe.fileno(),
1877
gobject.IO_IN | gobject.IO_HUP,
1878
functools.partial(self.handle_ipc,
1879
parent_pipe =
1880
parent_pipe,
1881
proc = proc,
1882
client_object =
1883
client))
2725
2726
GLib.io_add_watch(
2727
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2728
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2729
functools.partial(self.handle_ipc,
2730
parent_pipe=parent_pipe,
2731
proc=proc,
2732
client_object=client))
1884
2733
parent_pipe.send(True)
1885
2734
# remove the old hook in favor of the new above hook on
1886
2735
# same fileno
1889
2738
funcname = request[1]
1890
2739
args = request[2]
1891
2740
kwargs = request[3]
1892
2741
1893
2742
parent_pipe.send(('data', getattr(client_object,
1894
2743
funcname)(*args,
1895
**kwargs)))
1896
2744
**kwargs)))
2745
1897
2746
if command == 'getattr':
1898
2747
attrname = request[1]
1899
if callable(client_object.__getattribute__(attrname)):
1900
parent_pipe.send(('function',))
2748
if isinstance(client_object.__getattribute__(attrname),
2749
collections.Callable):
2750
parent_pipe.send(('function', ))
1901
2751
else:
1902
parent_pipe.send(('data', client_object
1903
.__getattribute__(attrname)))
1904
2752
parent_pipe.send((
2753
'data', client_object.__getattribute__(attrname)))
2754
1905
2755
if command == 'setattr':
1906
2756
attrname = request[1]
1907
2757
value = request[2]
1908
2758
setattr(client_object, attrname, value)
1909
2759
1910
2760
return True
1911
2761
1912
2762
2763
def rfc3339_duration_to_delta(duration):
2764
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2765
2766
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2767
True
2768
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2769
True
2770
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2771
True
2772
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2773
True
2774
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2775
True
2776
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2777
True
2778
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2779
True
2780
"""
2781
2782
# Parsing an RFC 3339 duration with regular expressions is not
2783
# possible - there would have to be multiple places for the same
2784
# values, like seconds. The current code, while more esoteric, is
2785
# cleaner without depending on a parsing library. If Python had a
2786
# built-in library for parsing we would use it, but we'd like to
2787
# avoid excessive use of external libraries.
2788
2789
# New type for defining tokens, syntax, and semantics all-in-one
2790
Token = collections.namedtuple("Token", (
2791
"regexp", # To match token; if "value" is not None, must have
2792
# a "group" containing digits
2793
"value", # datetime.timedelta or None
2794
"followers")) # Tokens valid after this token
2795
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2796
# the "duration" ABNF definition in RFC 3339, Appendix A.
2797
token_end = Token(re.compile(r"$"), None, frozenset())
2798
token_second = Token(re.compile(r"(\d+)S"),
2799
datetime.timedelta(seconds=1),
2800
frozenset((token_end, )))
2801
token_minute = Token(re.compile(r"(\d+)M"),
2802
datetime.timedelta(minutes=1),
2803
frozenset((token_second, token_end)))
2804
token_hour = Token(re.compile(r"(\d+)H"),
2805
datetime.timedelta(hours=1),
2806
frozenset((token_minute, token_end)))
2807
token_time = Token(re.compile(r"T"),
2808
None,
2809
frozenset((token_hour, token_minute,
2810
token_second)))
2811
token_day = Token(re.compile(r"(\d+)D"),
2812
datetime.timedelta(days=1),
2813
frozenset((token_time, token_end)))
2814
token_month = Token(re.compile(r"(\d+)M"),
2815
datetime.timedelta(weeks=4),
2816
frozenset((token_day, token_end)))
2817
token_year = Token(re.compile(r"(\d+)Y"),
2818
datetime.timedelta(weeks=52),
2819
frozenset((token_month, token_end)))
2820
token_week = Token(re.compile(r"(\d+)W"),
2821
datetime.timedelta(weeks=1),
2822
frozenset((token_end, )))
2823
token_duration = Token(re.compile(r"P"), None,
2824
frozenset((token_year, token_month,
2825
token_day, token_time,
2826
token_week)))
2827
# Define starting values:
2828
# Value so far
2829
value = datetime.timedelta()
2830
found_token = None
2831
# Following valid tokens
2832
followers = frozenset((token_duration, ))
2833
# String left to parse
2834
s = duration
2835
# Loop until end token is found
2836
while found_token is not token_end:
2837
# Search for any currently valid tokens
2838
for token in followers:
2839
match = token.regexp.match(s)
2840
if match is not None:
2841
# Token found
2842
if token.value is not None:
2843
# Value found, parse digits
2844
factor = int(match.group(1), 10)
2845
# Add to value so far
2846
value += factor * token.value
2847
# Strip token from string
2848
s = token.regexp.sub("", s, 1)
2849
# Go to found token
2850
found_token = token
2851
# Set valid next tokens
2852
followers = found_token.followers
2853
break
2854
else:
2855
# No currently valid tokens were found
2856
raise ValueError("Invalid RFC 3339 duration: {!r}"
2857
.format(duration))
2858
# End token found
2859
return value
2860
2861
1913
2862
def string_to_delta(interval):
1914
2863
"""Parse a string and return a datetime.timedelta
1915
1916
>>> string_to_delta('7d')
1917
datetime.timedelta(7)
1918
>>> string_to_delta('60s')
1919
datetime.timedelta(0, 60)
1920
>>> string_to_delta('60m')
1921
datetime.timedelta(0, 3600)
1922
>>> string_to_delta('24h')
1923
datetime.timedelta(1)
1924
>>> string_to_delta('1w')
1925
datetime.timedelta(7)
1926
>>> string_to_delta('5m 30s')
1927
datetime.timedelta(0, 330)
2864
2865
>>> string_to_delta('7d') == datetime.timedelta(7)
2866
True
2867
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2868
True
2869
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2870
True
2871
>>> string_to_delta('24h') == datetime.timedelta(1)
2872
True
2873
>>> string_to_delta('1w') == datetime.timedelta(7)
2874
True
2875
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2876
True
1928
2877
"""
2878
2879
try:
2880
return rfc3339_duration_to_delta(interval)
2881
except ValueError:
2882
pass
2883
1929
2884
timevalue = datetime.timedelta(0)
1930
2885
for s in interval.split():
1931
2886
try:
1932
suffix = unicode(s[-1])
2887
suffix = s[-1]
1933
2888
value = int(s[:-1])
1934
2889
if suffix == "d":
1935
2890
delta = datetime.timedelta(value)
1942
2897
elif suffix == "w":
1943
2898
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1944
2899
else:
1945
raise ValueError("Unknown suffix %r" % suffix)
1946
except (ValueError, IndexError) as e:
2900
raise ValueError("Unknown suffix {!r}".format(suffix))
2901
except IndexError as e:
1947
2902
raise ValueError(*(e.args))
1948
2903
timevalue += delta
1949
2904
return timevalue
1950
2905
1951
2906
1952
def daemon(nochdir = False, noclose = False):
2907
def daemon(nochdir=False, noclose=False):
1953
2908
"""See daemon(3). Standard BSD Unix function.
1954
2909
1955
2910
This should really exist as os.daemon, but it doesn't (yet)."""
1956
2911
if os.fork():
1957
2912
sys.exit()
1962
2917
sys.exit()
1963
2918
if not noclose:
1964
2919
# Close all standard open file descriptors
1965
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2920
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1966
2921
if not stat.S_ISCHR(os.fstat(null).st_mode):
1967
2922
raise OSError(errno.ENODEV,
1968
"%s not a character device"
1969
% os.path.devnull)
2923
"{} not a character device"
2924
.format(os.devnull))
1970
2925
os.dup2(null, sys.stdin.fileno())
1971
2926
os.dup2(null, sys.stdout.fileno())
1972
2927
os.dup2(null, sys.stderr.fileno())
1975
2930
1976
2931
1977
2932
def main():
1978
2933
1979
2934
##################################################################
1980
2935
# Parsing of options, both command line and config file
1981
2936
1982
2937
parser = argparse.ArgumentParser()
1983
2938
parser.add_argument("-v", "--version", action="version",
1984
version = "%%(prog)s %s" % version,
2939
version="%(prog)s {}".format(version),
1985
2940
help="show version number and exit")
1986
2941
parser.add_argument("-i", "--interface", metavar="IF",
1987
2942
help="Bind to interface IF")
1993
2948
help="Run self-test")
1994
2949
parser.add_argument("--debug", action="store_true",
1995
2950
help="Debug mode; run in foreground and log"
1996
" to terminal")
2951
" to terminal", default=None)
1997
2952
parser.add_argument("--debuglevel", metavar="LEVEL",
1998
2953
help="Debug level for stdout output")
1999
2954
parser.add_argument("--priority", help="GnuTLS"
2006
2961
" files")
2007
2962
parser.add_argument("--no-dbus", action="store_false",
2008
2963
dest="use_dbus", help="Do not provide D-Bus"
2009
" system bus interface")
2964
" system bus interface", default=None)
2010
2965
parser.add_argument("--no-ipv6", action="store_false",
2011
dest="use_ipv6", help="Do not use IPv6")
2966
dest="use_ipv6", help="Do not use IPv6",
2967
default=None)
2012
2968
parser.add_argument("--no-restore", action="store_false",
2013
2969
dest="restore", help="Do not restore stored"
2014
" state")
2970
" state", default=None)
2971
parser.add_argument("--socket", type=int,
2972
help="Specify a file descriptor to a network"
2973
" socket to use instead of creating one")
2015
2974
parser.add_argument("--statedir", metavar="DIR",
2016
2975
help="Directory to save/restore state in")
2017
2976
parser.add_argument("--foreground", action="store_true",
2977
help="Run in foreground", default=None)
2978
parser.add_argument("--no-zeroconf", action="store_false",
2979
dest="zeroconf", help="Do not use Zeroconf",
2980
default=None)
2981
2018
2982
options = parser.parse_args()
2019
2020
if options.check:
2021
import doctest
2022
doctest.testmod()
2023
sys.exit()
2024
2983
2025
2984
# Default values for config file for server-global settings
2026
server_defaults = { "interface": "",
2027
"address": "",
2028
"port": "",
2029
"debug": "False",
2030
"priority":
2031
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2032
"servicename": "Mandos",
2033
"use_dbus": "True",
2034
"use_ipv6": "True",
2035
"debuglevel": "",
2036
"restore": "True",
2037
"statedir": "/var/lib/mandos"
2038
}
2039
2985
if gnutls.has_rawpk:
2986
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2987
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2988
else:
2989
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2990
":+SIGN-DSA-SHA256")
2991
server_defaults = {"interface": "",
2992
"address": "",
2993
"port": "",
2994
"debug": "False",
2995
"priority": priority,
2996
"servicename": "Mandos",
2997
"use_dbus": "True",
2998
"use_ipv6": "True",
2999
"debuglevel": "",
3000
"restore": "True",
3001
"socket": "",
3002
"statedir": "/var/lib/mandos",
3003
"foreground": "False",
3004
"zeroconf": "True",
3005
}
3006
del priority
3007
2040
3008
# Parse config file for server-global settings
2041
server_config = configparser.SafeConfigParser(server_defaults)
3009
server_config = configparser.ConfigParser(server_defaults)
2042
3010
del server_defaults
2043
server_config.read(os.path.join(options.configdir,
2044
"mandos.conf"))
2045
# Convert the SafeConfigParser object to a dict
3011
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3012
# Convert the ConfigParser object to a dict
2046
3013
server_settings = server_config.defaults()
2047
3014
# Use the appropriate methods on the non-string config options
2048
for option in ("debug", "use_dbus", "use_ipv6"):
3015
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3016
"foreground", "zeroconf"):
2049
3017
server_settings[option] = server_config.getboolean("DEFAULT",
2050
3018
option)
2051
3019
if server_settings["port"]:
2052
3020
server_settings["port"] = server_config.getint("DEFAULT",
2053
3021
"port")
3022
if server_settings["socket"]:
3023
server_settings["socket"] = server_config.getint("DEFAULT",
3024
"socket")
3025
# Later, stdin will, and stdout and stderr might, be dup'ed
3026
# over with an opened os.devnull. But we don't want this to
3027
# happen with a supplied network socket.
3028
if 0 <= server_settings["socket"] <= 2:
3029
server_settings["socket"] = os.dup(server_settings
3030
["socket"])
2054
3031
del server_config
2055
3032
2056
3033
# Override the settings from the config file with command line
2057
3034
# options, if set.
2058
3035
for option in ("interface", "address", "port", "debug",
2059
"priority", "servicename", "configdir",
2060
"use_dbus", "use_ipv6", "debuglevel", "restore",
2061
"statedir"):
3036
"priority", "servicename", "configdir", "use_dbus",
3037
"use_ipv6", "debuglevel", "restore", "statedir",
3038
"socket", "foreground", "zeroconf"):
2062
3039
value = getattr(options, option)
2063
3040
if value is not None:
2064
3041
server_settings[option] = value
2065
3042
del options
2066
3043
# Force all strings to be unicode
2067
3044
for option in server_settings.keys():
2068
if type(server_settings[option]) is str:
2069
server_settings[option] = unicode(server_settings[option])
3045
if isinstance(server_settings[option], bytes):
3046
server_settings[option] = (server_settings[option]
3047
.decode("utf-8"))
3048
# Force all boolean options to be boolean
3049
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3050
"foreground", "zeroconf"):
3051
server_settings[option] = bool(server_settings[option])
3052
# Debug implies foreground
3053
if server_settings["debug"]:
3054
server_settings["foreground"] = True
2070
3055
# Now we have our good server settings in "server_settings"
2071
3056
2072
3057
##################################################################
2073
3058
3059
if (not server_settings["zeroconf"]
3060
and not (server_settings["port"]
3061
or server_settings["socket"] != "")):
3062
parser.error("Needs port or socket to work without Zeroconf")
3063
2074
3064
# For convenience
2075
3065
debug = server_settings["debug"]
2076
3066
debuglevel = server_settings["debuglevel"]
2078
3068
use_ipv6 = server_settings["use_ipv6"]
2079
3069
stored_state_path = os.path.join(server_settings["statedir"],
2080
3070
stored_state_file)
2081
3071
foreground = server_settings["foreground"]
3072
zeroconf = server_settings["zeroconf"]
3073
2082
3074
if debug:
2083
3075
initlogger(debug, logging.DEBUG)
2084
3076
else:
2087
3079
else:
2088
3080
level = getattr(logging, debuglevel.upper())
2089
3081
initlogger(debug, level)
2090
3082
2091
3083
if server_settings["servicename"] != "Mandos":
2092
syslogger.setFormatter(logging.Formatter
2093
('Mandos (%s) [%%(process)d]:'
2094
' %%(levelname)s: %%(message)s'
2095
% server_settings["servicename"]))
2096
3084
syslogger.setFormatter(
3085
logging.Formatter('Mandos ({}) [%(process)d]:'
3086
' %(levelname)s: %(message)s'.format(
3087
server_settings["servicename"])))
3088
2097
3089
# Parse config file with clients
2098
client_config = configparser.SafeConfigParser(Client.client_defaults)
3090
client_config = configparser.ConfigParser(Client.client_defaults)
2099
3091
client_config.read(os.path.join(server_settings["configdir"],
2100
3092
"clients.conf"))
2101
3093
2102
3094
global mandos_dbus_service
2103
3095
mandos_dbus_service = None
2104
2105
tcp_server = MandosServer((server_settings["address"],
2106
server_settings["port"]),
2107
ClientHandler,
2108
interface=(server_settings["interface"]
2109
or None),
2110
use_ipv6=use_ipv6,
2111
gnutls_priority=
2112
server_settings["priority"],
2113
use_dbus=use_dbus)
2114
if not debug:
2115
pidfilename = "/var/run/mandos.pid"
2116
try:
2117
pidfile = open(pidfilename, "w")
2118
except IOError:
2119
logger.error("Could not open file %r", pidfilename)
2120
2121
try:
2122
uid = pwd.getpwnam("_mandos").pw_uid
2123
gid = pwd.getpwnam("_mandos").pw_gid
2124
except KeyError:
2125
try:
2126
uid = pwd.getpwnam("mandos").pw_uid
2127
gid = pwd.getpwnam("mandos").pw_gid
3096
3097
socketfd = None
3098
if server_settings["socket"] != "":
3099
socketfd = server_settings["socket"]
3100
tcp_server = MandosServer(
3101
(server_settings["address"], server_settings["port"]),
3102
ClientHandler,
3103
interface=(server_settings["interface"] or None),
3104
use_ipv6=use_ipv6,
3105
gnutls_priority=server_settings["priority"],
3106
use_dbus=use_dbus,
3107
socketfd=socketfd)
3108
if not foreground:
3109
pidfilename = "/run/mandos.pid"
3110
if not os.path.isdir("/run/."):
3111
pidfilename = "/var/run/mandos.pid"
3112
pidfile = None
3113
try:
3114
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3115
except IOError as e:
3116
logger.error("Could not open file %r", pidfilename,
3117
exc_info=e)
3118
3119
for name, group in (("_mandos", "_mandos"),
3120
("mandos", "mandos"),
3121
("nobody", "nogroup")):
3122
try:
3123
uid = pwd.getpwnam(name).pw_uid
3124
gid = pwd.getpwnam(group).pw_gid
3125
break
2128
3126
except KeyError:
2129
try:
2130
uid = pwd.getpwnam("nobody").pw_uid
2131
gid = pwd.getpwnam("nobody").pw_gid
2132
except KeyError:
2133
uid = 65534
2134
gid = 65534
3127
continue
3128
else:
3129
uid = 65534
3130
gid = 65534
2135
3131
try:
2136
3132
os.setgid(gid)
2137
3133
os.setuid(uid)
3134
if debug:
3135
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3136
gid))
2138
3137
except OSError as error:
2139
if error[0] != errno.EPERM:
2140
raise error
2141
3138
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3139
.format(uid, gid, os.strerror(error.errno)))
3140
if error.errno != errno.EPERM:
3141
raise
3142
2142
3143
if debug:
2143
3144
# Enable all possible GnuTLS debugging
2144
3145
2145
3146
# "Use a log level over 10 to enable all debugging options."
2146
3147
# - GnuTLS manual
2147
gnutls.library.functions.gnutls_global_set_log_level(11)
2148
2149
@gnutls.library.types.gnutls_log_func
3148
gnutls.global_set_log_level(11)
3149
3150
@gnutls.log_func
2150
3151
def debug_gnutls(level, string):
2151
3152
logger.debug("GnuTLS: %s", string[:-1])
2152
2153
(gnutls.library.functions
2154
.gnutls_global_set_log_function(debug_gnutls))
2155
3153
3154
gnutls.global_set_log_function(debug_gnutls)
3155
2156
3156
# Redirect stdin so all checkers get /dev/null
2157
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3157
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2158
3158
os.dup2(null, sys.stdin.fileno())
2159
3159
if null > 2:
2160
3160
os.close(null)
2161
3161
2162
3162
# Need to fork before connecting to D-Bus
2163
if not debug:
3163
if not foreground:
2164
3164
# Close all input and output, do double fork, etc.
2165
3165
daemon()
2166
2167
gobject.threads_init()
2168
3166
3167
if gi.version_info < (3, 10, 2):
3168
# multiprocessing will use threads, so before we use GLib we
3169
# need to inform GLib that threads will be used.
3170
GLib.threads_init()
3171
2169
3172
global main_loop
2170
3173
# From the Avahi example code
2171
DBusGMainLoop(set_as_default=True )
2172
main_loop = gobject.MainLoop()
3174
DBusGMainLoop(set_as_default=True)
3175
main_loop = GLib.MainLoop()
2173
3176
bus = dbus.SystemBus()
2174
3177
# End of Avahi example code
2175
3178
if use_dbus:
2176
3179
try:
2177
3180
bus_name = dbus.service.BusName("se.recompile.Mandos",
2178
bus, do_not_queue=True)
2179
old_bus_name = (dbus.service.BusName
2180
("se.bsnet.fukt.Mandos", bus,
2181
do_not_queue=True))
2182
except dbus.exceptions.NameExistsException as e:
2183
logger.error(unicode(e) + ", disabling D-Bus")
3181
bus,
3182
do_not_queue=True)
3183
old_bus_name = dbus.service.BusName(
3184
"se.bsnet.fukt.Mandos", bus,
3185
do_not_queue=True)
3186
except dbus.exceptions.DBusException as e:
3187
logger.error("Disabling D-Bus:", exc_info=e)
2184
3188
use_dbus = False
2185
3189
server_settings["use_dbus"] = False
2186
3190
tcp_server.use_dbus = False
2187
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2188
service = AvahiServiceToSyslog(name =
2189
server_settings["servicename"],
2190
servicetype = "_mandos._tcp",
2191
protocol = protocol, bus = bus)
2192
if server_settings["interface"]:
2193
service.interface = (if_nametoindex
2194
(str(server_settings["interface"])))
2195
3191
if zeroconf:
3192
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3193
service = AvahiServiceToSyslog(
3194
name=server_settings["servicename"],
3195
servicetype="_mandos._tcp",
3196
protocol=protocol,
3197
bus=bus)
3198
if server_settings["interface"]:
3199
service.interface = if_nametoindex(
3200
server_settings["interface"].encode("utf-8"))
3201
2196
3202
global multiprocessing_manager
2197
3203
multiprocessing_manager = multiprocessing.Manager()
2198
3204
2199
3205
client_class = Client
2200
3206
if use_dbus:
2201
client_class = functools.partial(ClientDBusTransitional,
2202
bus = bus)
2203
3207
client_class = functools.partial(ClientDBus, bus=bus)
3208
2204
3209
client_settings = Client.config_parser(client_config)
2205
3210
old_client_settings = {}
2206
3211
clients_data = {}
2207
3212
3213
# This is used to redirect stdout and stderr for checker processes
3214
global wnull
3215
wnull = open(os.devnull, "w") # A writable /dev/null
3216
# Only used if server is running in foreground but not in debug
3217
# mode
3218
if debug or not foreground:
3219
wnull.close()
3220
2208
3221
# Get client data and settings from last running state.
2209
3222
if server_settings["restore"]:
2210
3223
try:
2211
3224
with open(stored_state_path, "rb") as stored_state:
2212
clients_data, old_client_settings = (pickle.load
2213
(stored_state))
3225
if sys.version_info.major == 2:
3226
clients_data, old_client_settings = pickle.load(
3227
stored_state)
3228
else:
3229
bytes_clients_data, bytes_old_client_settings = (
3230
pickle.load(stored_state, encoding="bytes"))
3231
# Fix bytes to strings
3232
# clients_data
3233
# .keys()
3234
clients_data = {(key.decode("utf-8")
3235
if isinstance(key, bytes)
3236
else key): value
3237
for key, value in
3238
bytes_clients_data.items()}
3239
del bytes_clients_data
3240
for key in clients_data:
3241
value = {(k.decode("utf-8")
3242
if isinstance(k, bytes) else k): v
3243
for k, v in
3244
clients_data[key].items()}
3245
clients_data[key] = value
3246
# .client_structure
3247
value["client_structure"] = [
3248
(s.decode("utf-8")
3249
if isinstance(s, bytes)
3250
else s) for s in
3251
value["client_structure"]]
3252
# .name, .host, and .checker_command
3253
for k in ("name", "host", "checker_command"):
3254
if isinstance(value[k], bytes):
3255
value[k] = value[k].decode("utf-8")
3256
if "key_id" not in value:
3257
value["key_id"] = ""
3258
elif "fingerprint" not in value:
3259
value["fingerprint"] = ""
3260
# old_client_settings
3261
# .keys()
3262
old_client_settings = {
3263
(key.decode("utf-8")
3264
if isinstance(key, bytes)
3265
else key): value
3266
for key, value in
3267
bytes_old_client_settings.items()}
3268
del bytes_old_client_settings
3269
# .host and .checker_command
3270
for value in old_client_settings.values():
3271
for attribute in ("host", "checker_command"):
3272
if isinstance(value[attribute], bytes):
3273
value[attribute] = (value[attribute]
3274
.decode("utf-8"))
2214
3275
os.remove(stored_state_path)
2215
3276
except IOError as e:
2216
logger.warning("Could not load persistent state: {0}"
2217
.format(e))
2218
if e.errno != errno.ENOENT:
3277
if e.errno == errno.ENOENT:
3278
logger.warning("Could not load persistent state:"
3279
" {}".format(os.strerror(e.errno)))
3280
else:
3281
logger.critical("Could not load persistent state:",
3282
exc_info=e)
2219
3283
raise
2220
3284
except EOFError as e:
2221
3285
logger.warning("Could not load persistent state: "
2222
"EOFError: {0}".format(e))
2223
3286
"EOFError:",
3287
exc_info=e)
3288
2224
3289
with PGPEngine() as pgp:
2225
for client_name, client in clients_data.iteritems():
3290
for client_name, client in clients_data.items():
3291
# Skip removed clients
3292
if client_name not in client_settings:
3293
continue
3294
2226
3295
# Decide which value to use after restoring saved state.
2227
3296
# We have three different values: Old config file,
2228
3297
# new config file, and saved state.
2233
3302
# For each value in new config, check if it
2234
3303
# differs from the old config value (Except for
2235
3304
# the "secret" attribute)
2236
if (name != "secret" and
2237
value != old_client_settings[client_name]
2238
[name]):
3305
if (name != "secret"
3306
and (value !=
3307
old_client_settings[client_name][name])):
2239
3308
client[name] = value
2240
3309
except KeyError:
2241
3310
pass
2242
3311
2243
3312
# Clients who has passed its expire date can still be
2244
# enabled if its last checker was successful. Clients
2245
# whose checker failed before we stored its state is
2246
# assumed to have failed all checkers during downtime.
3313
# enabled if its last checker was successful. A Client
3314
# whose checker succeeded before we stored its state is
3315
# assumed to have successfully run all checkers during
3316
# downtime.
2247
3317
if client["enabled"]:
2248
3318
if datetime.datetime.utcnow() >= client["expires"]:
2249
3319
if not client["last_checked_ok"]:
2250
3320
logger.warning(
2251
"disabling client {0} - Client never "
2252
"performed a successfull checker"
2253
.format(client["name"]))
3321
"disabling client {} - Client never "
3322
"performed a successful checker".format(
3323
client_name))
2254
3324
client["enabled"] = False
2255
3325
elif client["last_checker_status"] != 0:
2256
3326
logger.warning(
2257
"disabling client {0} - Client "
2258
"last checker failed with error code {1}"
2259
.format(client["name"],
2260
client["last_checker_status"]))
3327
"disabling client {} - Client last"
3328
" checker failed with error code"
3329
" {}".format(
3330
client_name,
3331
client["last_checker_status"]))
2261
3332
client["enabled"] = False
2262
3333
else:
2263
client["expires"] = (datetime.datetime
2264
.utcnow()
2265
+ client["timeout"])
2266
3334
client["expires"] = (
3335
datetime.datetime.utcnow()
3336
+ client["timeout"])
3337
logger.debug("Last checker succeeded,"
3338
" keeping {} enabled".format(
3339
client_name))
2267
3340
try:
2268
client["secret"] = (
2269
pgp.decrypt(client["encrypted_secret"],
2270
client_settings[client_name]
2271
["secret"]))
3341
client["secret"] = pgp.decrypt(
3342
client["encrypted_secret"],
3343
client_settings[client_name]["secret"])
2272
3344
except PGPError:
2273
3345
# If decryption fails, we use secret from new settings
2274
logger.debug("Failed to decrypt {0} old secret"
2275
.format(client_name))
2276
client["secret"] = (
2277
client_settings[client_name]["secret"])
3346
logger.debug("Failed to decrypt {} old secret".format(
3347
client_name))
3348
client["secret"] = (client_settings[client_name]
3349
["secret"])
2278
3350
2279
2280
3351
# Add/remove clients based on new changes made to config
2281
for client_name in set(old_client_settings) - set(client_settings):
3352
for client_name in (set(old_client_settings)
3353
- set(client_settings)):
2282
3354
del clients_data[client_name]
2283
for client_name in set(client_settings) - set(old_client_settings):
3355
for client_name in (set(client_settings)
3356
- set(old_client_settings)):
2284
3357
clients_data[client_name] = client_settings[client_name]
2285
3358
2286
# Create clients all clients
2287
for client_name, client in clients_data.iteritems():
3359
# Create all client objects
3360
for client_name, client in clients_data.items():
2288
3361
tcp_server.clients[client_name] = client_class(
2289
name = client_name, settings = client)
2290
3362
name=client_name,
3363
settings=client,
3364
server_settings=server_settings)
3365
2291
3366
if not tcp_server.clients:
2292
3367
logger.warning("No clients defined")
2293
2294
if not debug:
2295
try:
2296
with pidfile:
2297
pid = os.getpid()
2298
pidfile.write(str(pid) + "\n".encode("utf-8"))
2299
del pidfile
2300
except IOError:
2301
logger.error("Could not write to file %r with PID %d",
2302
pidfilename, pid)
2303
except NameError:
2304
# "pidfile" was never created
2305
pass
3368
3369
if not foreground:
3370
if pidfile is not None:
3371
pid = os.getpid()
3372
try:
3373
with pidfile:
3374
print(pid, file=pidfile)
3375
except IOError:
3376
logger.error("Could not write to file %r with PID %d",
3377
pidfilename, pid)
3378
del pidfile
2306
3379
del pidfilename
2307
signal.signal(signal.SIGINT, signal.SIG_IGN)
2308
2309
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2310
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2311
3380
3381
for termsig in (signal.SIGHUP, signal.SIGTERM):
3382
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3383
lambda: main_loop.quit() and False)
3384
2312
3385
if use_dbus:
2313
class MandosDBusService(dbus.service.Object):
3386
3387
@alternate_dbus_interfaces(
3388
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3389
class MandosDBusService(DBusObjectWithObjectManager):
2314
3390
"""A D-Bus proxy object"""
3391
2315
3392
def __init__(self):
2316
3393
dbus.service.Object.__init__(self, bus, "/")
3394
2317
3395
_interface = "se.recompile.Mandos"
2318
3396
2319
3397
@dbus.service.signal(_interface, signature="o")
2320
3398
def ClientAdded(self, objpath):
2321
3399
"D-Bus signal"
2322
3400
pass
2323
3401
2324
3402
@dbus.service.signal(_interface, signature="ss")
2325
def ClientNotFound(self, fingerprint, address):
3403
def ClientNotFound(self, key_id, address):
2326
3404
"D-Bus signal"
2327
3405
pass
2328
3406
3407
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3408
"true"})
2329
3409
@dbus.service.signal(_interface, signature="os")
2330
3410
def ClientRemoved(self, objpath, name):
2331
3411
"D-Bus signal"
2332
3412
pass
2333
3413
3414
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3415
"true"})
2334
3416
@dbus.service.method(_interface, out_signature="ao")
2335
3417
def GetAllClients(self):
2336
3418
"D-Bus method"
2337
return dbus.Array(c.dbus_object_path
2338
for c in
2339
tcp_server.clients.itervalues())
2340
3419
return dbus.Array(c.dbus_object_path for c in
3420
tcp_server.clients.values())
3421
3422
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3423
"true"})
2341
3424
@dbus.service.method(_interface,
2342
3425
out_signature="a{oa{sv}}")
2343
3426
def GetAllClientsWithProperties(self):
2344
3427
"D-Bus method"
2345
3428
return dbus.Dictionary(
2346
((c.dbus_object_path, c.GetAll(""))
2347
for c in tcp_server.clients.itervalues()),
3429
{c.dbus_object_path: c.GetAll(
3430
"se.recompile.Mandos.Client")
3431
for c in tcp_server.clients.values()},
2348
3432
signature="oa{sv}")
2349
3433
2350
3434
@dbus.service.method(_interface, in_signature="o")
2351
3435
def RemoveClient(self, object_path):
2352
3436
"D-Bus method"
2353
for c in tcp_server.clients.itervalues():
3437
for c in tcp_server.clients.values():
2354
3438
if c.dbus_object_path == object_path:
2355
3439
del tcp_server.clients[c.name]
2356
3440
c.remove_from_connection()
2357
# Don't signal anything except ClientRemoved
3441
# Don't signal the disabling
2358
3442
c.disable(quiet=True)
2359
# Emit D-Bus signal
2360
self.ClientRemoved(object_path, c.name)
3443
# Emit D-Bus signal for removal
3444
self.client_removed_signal(c)
2361
3445
return
2362
3446
raise KeyError(object_path)
2363
3447
2364
3448
del _interface
2365
2366
class MandosDBusServiceTransitional(MandosDBusService):
2367
__metaclass__ = AlternateDBusNamesMetaclass
2368
mandos_dbus_service = MandosDBusServiceTransitional()
2369
3449
3450
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3451
out_signature="a{oa{sa{sv}}}")
3452
def GetManagedObjects(self):
3453
"""D-Bus method"""
3454
return dbus.Dictionary(
3455
{client.dbus_object_path:
3456
dbus.Dictionary(
3457
{interface: client.GetAll(interface)
3458
for interface in
3459
client._get_all_interface_names()})
3460
for client in tcp_server.clients.values()})
3461
3462
def client_added_signal(self, client):
3463
"""Send the new standard signal and the old signal"""
3464
if use_dbus:
3465
# New standard signal
3466
self.InterfacesAdded(
3467
client.dbus_object_path,
3468
dbus.Dictionary(
3469
{interface: client.GetAll(interface)
3470
for interface in
3471
client._get_all_interface_names()}))
3472
# Old signal
3473
self.ClientAdded(client.dbus_object_path)
3474
3475
def client_removed_signal(self, client):
3476
"""Send the new standard signal and the old signal"""
3477
if use_dbus:
3478
# New standard signal
3479
self.InterfacesRemoved(
3480
client.dbus_object_path,
3481
client._get_all_interface_names())
3482
# Old signal
3483
self.ClientRemoved(client.dbus_object_path,
3484
client.name)
3485
3486
mandos_dbus_service = MandosDBusService()
3487
3488
# Save modules to variables to exempt the modules from being
3489
# unloaded before the function registered with atexit() is run.
3490
mp = multiprocessing
3491
wn = wnull
3492
2370
3493
def cleanup():
2371
3494
"Cleanup function; run on exit"
2372
service.cleanup()
2373
2374
multiprocessing.active_children()
3495
if zeroconf:
3496
service.cleanup()
3497
3498
mp.active_children()
3499
wn.close()
2375
3500
if not (tcp_server.clients or client_settings):
2376
3501
return
2377
3502
2378
3503
# Store client before exiting. Secrets are encrypted with key
2379
3504
# based on what config file has. If config file is
2380
3505
# removed/edited, old secret will thus be unrecovable.
2381
3506
clients = {}
2382
3507
with PGPEngine() as pgp:
2383
for client in tcp_server.clients.itervalues():
3508
for client in tcp_server.clients.values():
2384
3509
key = client_settings[client.name]["secret"]
2385
3510
client.encrypted_secret = pgp.encrypt(client.secret,
2386
3511
key)
2387
3512
client_dict = {}
2388
3513
2389
3514
# A list of attributes that can not be pickled
2390
3515
# + secret.
2391
exclude = set(("bus", "changedstate", "secret",
2392
"checker"))
2393
for name, typ in (inspect.getmembers
2394
(dbus.service.Object)):
3516
exclude = {"bus", "changedstate", "secret",
3517
"checker", "server_settings"}
3518
for name, typ in inspect.getmembers(dbus.service
3519
.Object):
2395
3520
exclude.add(name)
2396
3521
2397
3522
client_dict["encrypted_secret"] = (client
2398
3523
.encrypted_secret)
2399
3524
for attr in client.client_structure:
2400
3525
if attr not in exclude:
2401
3526
client_dict[attr] = getattr(client, attr)
2402
3527
2403
3528
clients[client.name] = client_dict
2404
3529
del client_settings[client.name]["secret"]
2405
3530
2406
3531
try:
2407
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2408
prefix="clients-",
2409
dir=os.path.dirname
2410
(stored_state_path))
2411
with os.fdopen(tempfd, "wb") as stored_state:
2412
pickle.dump((clients, client_settings), stored_state)
3532
with tempfile.NamedTemporaryFile(
3533
mode='wb',
3534
suffix=".pickle",
3535
prefix='clients-',
3536
dir=os.path.dirname(stored_state_path),
3537
delete=False) as stored_state:
3538
pickle.dump((clients, client_settings), stored_state,
3539
protocol=2)
3540
tempname = stored_state.name
2413
3541
os.rename(tempname, stored_state_path)
2414
3542
except (IOError, OSError) as e:
2415
logger.warning("Could not save persistent state: {0}"
2416
.format(e))
2417
3543
if not debug:
2418
3544
try:
2419
3545
os.remove(tempname)
2420
3546
except NameError:
2421
3547
pass
2422
if e.errno not in set((errno.ENOENT, errno.EACCES,
2423
errno.EEXIST)):
2424
raise e
2425
3548
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3549
logger.warning("Could not save persistent state: {}"
3550
.format(os.strerror(e.errno)))
3551
else:
3552
logger.warning("Could not save persistent state:",
3553
exc_info=e)
3554
raise
3555
2426
3556
# Delete all clients, and settings from config
2427
3557
while tcp_server.clients:
2428
3558
name, client = tcp_server.clients.popitem()
2429
3559
if use_dbus:
2430
3560
client.remove_from_connection()
2431
# Don't signal anything except ClientRemoved
3561
# Don't signal the disabling
2432
3562
client.disable(quiet=True)
3563
# Emit D-Bus signal for removal
2433
3564
if use_dbus:
2434
# Emit D-Bus signal
2435
mandos_dbus_service.ClientRemoved(client
2436
.dbus_object_path,
2437
client.name)
3565
mandos_dbus_service.client_removed_signal(client)
2438
3566
client_settings.clear()
2439
3567
2440
3568
atexit.register(cleanup)
2441
2442
for client in tcp_server.clients.itervalues():
3569
3570
for client in tcp_server.clients.values():
2443
3571
if use_dbus:
2444
# Emit D-Bus signal
2445
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3572
# Emit D-Bus signal for adding
3573
mandos_dbus_service.client_added_signal(client)
2446
3574
# Need to initiate checking of clients
2447
3575
if client.enabled:
2448
3576
client.init_checker()
2449
3577
2450
3578
tcp_server.enable()
2451
3579
tcp_server.server_activate()
2452
3580
2453
3581
# Find out what port we got
2454
service.port = tcp_server.socket.getsockname()[1]
3582
if zeroconf:
3583
service.port = tcp_server.socket.getsockname()[1]
2455
3584
if use_ipv6:
2456
3585
logger.info("Now listening on address %r, port %d,"
2457
" flowinfo %d, scope_id %d"
2458
% tcp_server.socket.getsockname())
3586
" flowinfo %d, scope_id %d",
3587
*tcp_server.socket.getsockname())
2459
3588
else: # IPv4
2460
logger.info("Now listening on address %r, port %d"
2461
% tcp_server.socket.getsockname())
2462
2463
#service.interface = tcp_server.socket.getsockname()[3]
2464
3589
logger.info("Now listening on address %r, port %d",
3590
*tcp_server.socket.getsockname())
3591
3592
# service.interface = tcp_server.socket.getsockname()[3]
3593
2465
3594
try:
2466
# From the Avahi example code
2467
try:
2468
service.activate()
2469
except dbus.exceptions.DBusException as error:
2470
logger.critical("DBusException: %s", error)
2471
cleanup()
2472
sys.exit(1)
2473
# End of Avahi example code
2474
2475
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2476
lambda *args, **kwargs:
2477
(tcp_server.handle_request
2478
(*args[2:], **kwargs) or True))
2479
3595
if zeroconf:
3596
# From the Avahi example code
3597
try:
3598
service.activate()
3599
except dbus.exceptions.DBusException as error:
3600
logger.critical("D-Bus Exception", exc_info=error)
3601
cleanup()
3602
sys.exit(1)
3603
# End of Avahi example code
3604
3605
GLib.io_add_watch(
3606
GLib.IOChannel.unix_new(tcp_server.fileno()),
3607
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3608
lambda *args, **kwargs: (tcp_server.handle_request
3609
(*args[2:], **kwargs) or True))
3610
2480
3611
logger.debug("Starting main loop")
2481
3612
main_loop.run()
2482
3613
except AvahiError as error:
2483
logger.critical("AvahiError: %s", error)
3614
logger.critical("Avahi Error", exc_info=error)
2484
3615
cleanup()
2485
3616
sys.exit(1)
2486
3617
except KeyboardInterrupt:
2491
3622
# Must run before the D-Bus bus name gets deregistered
2492
3623
cleanup()
2493
3624
3625
3626
def should_only_run_tests():
3627
parser = argparse.ArgumentParser(add_help=False)
3628
parser.add_argument("--check", action='store_true')
3629
args, unknown_args = parser.parse_known_args()
3630
run_tests = args.check
3631
if run_tests:
3632
# Remove --check argument from sys.argv
3633
sys.argv[1:] = unknown_args
3634
return run_tests
3635
3636
# Add all tests from doctest strings
3637
def load_tests(loader, tests, none):
3638
import doctest
3639
tests.addTests(doctest.DocTestSuite())
3640
return tests
3641
2494
3642
if __name__ == '__main__':
2495
main()
3643
try:
3644
if should_only_run_tests():
3645
# Call using ./mandos --check [--verbose]
3646
unittest.main()
3647
else:
3648
main()
3649
finally:
3650
logging.shutdown()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0