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- Committer: Teddy Hogeborn
- Date: 2019-08-30 21:46:16 UTC
- Revision ID: teddy@recompile.se-20190830214616-t1yhgfjz3bdggjd9
Use Python 3 by default
* INSTALL: Document Python 3 dependency.
* debian/control: Change both of "python (>= 2.7), python (<< 3)" to
"python (>= 3)" and change all python-* dependencies
to be python3-* instead.
* mandos: Change first line to use "python3" instead of "python".
* mandos-ctl: - '' -
* mandos-monitor: - '' -
* INSTALL: Document Python 3 dependency.
* debian/control: Change both of "python (>= 2.7), python (<< 3)" to
"python (>= 3)" and change all python-* dependencies
to be python3-* instead.
* mandos: Change first line to use "python3" instead of "python".
* mandos-ctl: - '' -
* mandos-monitor: - '' -
- files added:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- network-hooks.d
- plugin-helpers
- files removed:
- initramfs-tools-hook-conf
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python
2
# -*- mode: python; coding: utf-8 -*-
3
#
1
#!/usr/bin/python3 -b
2
# -*- mode: python; after-save-hook: (lambda () (let ((command (if (fboundp 'file-local-name) (file-local-name (buffer-file-name)) (or (file-remote-p (buffer-file-name) 'localname) (buffer-file-name))))) (if (= (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (format "%s --check" (shell-quote-argument command)) nil "*Test*")) 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w))) (progn (with-current-buffer "*Test*" (compilation-mode)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); coding: utf-8 -*-
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
32
# Contact the authors at <mandos@recompile.se>.
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
import SocketServer as socketserver
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
38
47
import socket
39
48
import argparse
40
49
import datetime
41
50
import errno
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
49
55
import sys
50
56
import re
51
57
import os
60
66
import struct
61
67
import fcntl
62
68
import functools
63
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
64
73
import multiprocessing
65
74
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
80
import unittest
66
81
67
82
import dbus
68
83
import dbus.service
69
import gobject
70
import avahi
84
import gi
85
from gi.repository import GLib
71
86
from dbus.mainloop.glib import DBusGMainLoop
72
87
import ctypes
73
88
import ctypes.util
74
89
import xml.dom.minidom
75
90
import inspect
76
91
92
if sys.version_info.major == 2:
93
__metaclass__ = type
94
95
# Show warnings by default
96
if not sys.warnoptions:
97
import warnings
98
warnings.simplefilter("default")
99
100
# Try to find the value of SO_BINDTODEVICE:
77
101
try:
102
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
103
# newer, and it is also the most natural place for it:
78
104
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
79
105
except AttributeError:
80
106
try:
107
# This is where SO_BINDTODEVICE was up to and including Python
108
# 2.6, and also 3.2:
81
109
from IN import SO_BINDTODEVICE
82
110
except ImportError:
83
SO_BINDTODEVICE = None
84
85
86
version = "1.3.1"
87
88
#logger = logging.getLogger('mandos')
89
logger = logging.Logger('mandos')
90
syslogger = (logging.handlers.SysLogHandler
91
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
92
address = str("/dev/log")))
93
syslogger.setFormatter(logging.Formatter
94
('Mandos [%(process)d]: %(levelname)s:'
95
' %(message)s'))
96
logger.addHandler(syslogger)
97
98
console = logging.StreamHandler()
99
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
100
' %(levelname)s:'
101
' %(message)s'))
102
logger.addHandler(console)
111
# In Python 2.7 it seems to have been removed entirely.
112
# Try running the C preprocessor:
113
try:
114
cc = subprocess.Popen(["cc", "--language=c", "-E",
115
"/dev/stdin"],
116
stdin=subprocess.PIPE,
117
stdout=subprocess.PIPE)
118
stdout = cc.communicate(
119
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
120
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
121
except (OSError, ValueError, IndexError):
122
# No value found
123
SO_BINDTODEVICE = None
124
125
if sys.version_info.major == 2:
126
str = unicode
127
128
if sys.version_info < (3, 2):
129
configparser.Configparser = configparser.SafeConfigParser
130
131
version = "1.8.8"
132
stored_state_file = "clients.pickle"
133
134
logger = logging.getLogger()
135
logging.captureWarnings(True) # Show warnings via the logging system
136
syslogger = None
137
138
try:
139
if_nametoindex = ctypes.cdll.LoadLibrary(
140
ctypes.util.find_library("c")).if_nametoindex
141
except (OSError, AttributeError):
142
143
def if_nametoindex(interface):
144
"Get an interface index the hard way, i.e. using fcntl()"
145
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
146
with contextlib.closing(socket.socket()) as s:
147
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
148
struct.pack(b"16s16x", interface))
149
interface_index = struct.unpack("I", ifreq[16:20])[0]
150
return interface_index
151
152
153
def copy_function(func):
154
"""Make a copy of a function"""
155
if sys.version_info.major == 2:
156
return types.FunctionType(func.func_code,
157
func.func_globals,
158
func.func_name,
159
func.func_defaults,
160
func.func_closure)
161
else:
162
return types.FunctionType(func.__code__,
163
func.__globals__,
164
func.__name__,
165
func.__defaults__,
166
func.__closure__)
167
168
169
def initlogger(debug, level=logging.WARNING):
170
"""init logger and add loglevel"""
171
172
global syslogger
173
syslogger = (logging.handlers.SysLogHandler(
174
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
175
address="/dev/log"))
176
syslogger.setFormatter(logging.Formatter
177
('Mandos [%(process)d]: %(levelname)s:'
178
' %(message)s'))
179
logger.addHandler(syslogger)
180
181
if debug:
182
console = logging.StreamHandler()
183
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
184
' [%(process)d]:'
185
' %(levelname)s:'
186
' %(message)s'))
187
logger.addHandler(console)
188
logger.setLevel(level)
189
190
191
class PGPError(Exception):
192
"""Exception if encryption/decryption fails"""
193
pass
194
195
196
class PGPEngine:
197
"""A simple class for OpenPGP symmetric encryption & decryption"""
198
199
def __init__(self):
200
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
201
self.gpg = "gpg"
202
try:
203
output = subprocess.check_output(["gpgconf"])
204
for line in output.splitlines():
205
name, text, path = line.split(b":")
206
if name == "gpg":
207
self.gpg = path
208
break
209
except OSError as e:
210
if e.errno != errno.ENOENT:
211
raise
212
self.gnupgargs = ['--batch',
213
'--homedir', self.tempdir,
214
'--force-mdc',
215
'--quiet']
216
# Only GPG version 1 has the --no-use-agent option.
217
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
218
self.gnupgargs.append("--no-use-agent")
219
220
def __enter__(self):
221
return self
222
223
def __exit__(self, exc_type, exc_value, traceback):
224
self._cleanup()
225
return False
226
227
def __del__(self):
228
self._cleanup()
229
230
def _cleanup(self):
231
if self.tempdir is not None:
232
# Delete contents of tempdir
233
for root, dirs, files in os.walk(self.tempdir,
234
topdown=False):
235
for filename in files:
236
os.remove(os.path.join(root, filename))
237
for dirname in dirs:
238
os.rmdir(os.path.join(root, dirname))
239
# Remove tempdir
240
os.rmdir(self.tempdir)
241
self.tempdir = None
242
243
def password_encode(self, password):
244
# Passphrase can not be empty and can not contain newlines or
245
# NUL bytes. So we prefix it and hex encode it.
246
encoded = b"mandos" + binascii.hexlify(password)
247
if len(encoded) > 2048:
248
# GnuPG can't handle long passwords, so encode differently
249
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
250
.replace(b"\n", b"\\n")
251
.replace(b"\0", b"\\x00"))
252
return encoded
253
254
def encrypt(self, data, password):
255
passphrase = self.password_encode(password)
256
with tempfile.NamedTemporaryFile(
257
dir=self.tempdir) as passfile:
258
passfile.write(passphrase)
259
passfile.flush()
260
proc = subprocess.Popen([self.gpg, '--symmetric',
261
'--passphrase-file',
262
passfile.name]
263
+ self.gnupgargs,
264
stdin=subprocess.PIPE,
265
stdout=subprocess.PIPE,
266
stderr=subprocess.PIPE)
267
ciphertext, err = proc.communicate(input=data)
268
if proc.returncode != 0:
269
raise PGPError(err)
270
return ciphertext
271
272
def decrypt(self, data, password):
273
passphrase = self.password_encode(password)
274
with tempfile.NamedTemporaryFile(
275
dir=self.tempdir) as passfile:
276
passfile.write(passphrase)
277
passfile.flush()
278
proc = subprocess.Popen([self.gpg, '--decrypt',
279
'--passphrase-file',
280
passfile.name]
281
+ self.gnupgargs,
282
stdin=subprocess.PIPE,
283
stdout=subprocess.PIPE,
284
stderr=subprocess.PIPE)
285
decrypted_plaintext, err = proc.communicate(input=data)
286
if proc.returncode != 0:
287
raise PGPError(err)
288
return decrypted_plaintext
289
290
291
# Pretend that we have an Avahi module
292
class avahi:
293
"""This isn't so much a class as it is a module-like namespace."""
294
IF_UNSPEC = -1 # avahi-common/address.h
295
PROTO_UNSPEC = -1 # avahi-common/address.h
296
PROTO_INET = 0 # avahi-common/address.h
297
PROTO_INET6 = 1 # avahi-common/address.h
298
DBUS_NAME = "org.freedesktop.Avahi"
299
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
300
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
301
DBUS_PATH_SERVER = "/"
302
303
@staticmethod
304
def string_array_to_txt_array(t):
305
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
306
for s in t), signature="ay")
307
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
308
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
309
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
310
SERVER_INVALID = 0 # avahi-common/defs.h
311
SERVER_REGISTERING = 1 # avahi-common/defs.h
312
SERVER_RUNNING = 2 # avahi-common/defs.h
313
SERVER_COLLISION = 3 # avahi-common/defs.h
314
SERVER_FAILURE = 4 # avahi-common/defs.h
315
103
316
104
317
class AvahiError(Exception):
105
318
def __init__(self, value, *args, **kwargs):
106
319
self.value = value
107
super(AvahiError, self).__init__(value, *args, **kwargs)
108
def __unicode__(self):
109
return unicode(repr(self.value))
320
return super(AvahiError, self).__init__(value, *args,
321
**kwargs)
322
110
323
111
324
class AvahiServiceError(AvahiError):
112
325
pass
113
326
327
114
328
class AvahiGroupError(AvahiError):
115
329
pass
116
330
117
331
118
class AvahiService(object):
332
class AvahiService:
119
333
"""An Avahi (Zeroconf) service.
120
334
121
335
Attributes:
122
336
interface: integer; avahi.IF_UNSPEC or an interface index.
123
337
Used to optionally bind to the specified interface.
124
338
name: string; Example: 'Mandos'
125
339
type: string; Example: '_mandos._tcp'.
126
See <http://www.dns-sd.org/ServiceTypes.html>
340
See <https://www.iana.org/assignments/service-names-port-numbers>
127
341
port: integer; what port to announce
128
342
TXT: list of strings; TXT record for the service
129
343
domain: string; Domain to publish on, default to .local if empty.
135
349
server: D-Bus Server
136
350
bus: dbus.SystemBus()
137
351
"""
138
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
139
servicetype = None, port = None, TXT = None,
140
domain = "", host = "", max_renames = 32768,
141
protocol = avahi.PROTO_UNSPEC, bus = None):
352
353
def __init__(self,
354
interface=avahi.IF_UNSPEC,
355
name=None,
356
servicetype=None,
357
port=None,
358
TXT=None,
359
domain="",
360
host="",
361
max_renames=32768,
362
protocol=avahi.PROTO_UNSPEC,
363
bus=None):
142
364
self.interface = interface
143
365
self.name = name
144
366
self.type = servicetype
153
375
self.server = None
154
376
self.bus = bus
155
377
self.entry_group_state_changed_match = None
156
def rename(self):
378
379
def rename(self, remove=True):
157
380
"""Derived from the Avahi example code"""
158
381
if self.rename_count >= self.max_renames:
159
382
logger.critical("No suitable Zeroconf service name found"
160
383
" after %i retries, exiting.",
161
384
self.rename_count)
162
385
raise AvahiServiceError("Too many renames")
163
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
386
self.name = str(
387
self.server.GetAlternativeServiceName(self.name))
388
self.rename_count += 1
164
389
logger.info("Changing Zeroconf service name to %r ...",
165
390
self.name)
166
syslogger.setFormatter(logging.Formatter
167
('Mandos (%s) [%%(process)d]:'
168
' %%(levelname)s: %%(message)s'
169
% self.name))
170
self.remove()
391
if remove:
392
self.remove()
171
393
try:
172
394
self.add()
173
395
except dbus.exceptions.DBusException as error:
174
logger.critical("DBusException: %s", error)
175
self.cleanup()
176
os._exit(1)
177
self.rename_count += 1
396
if (error.get_dbus_name()
397
== "org.freedesktop.Avahi.CollisionError"):
398
logger.info("Local Zeroconf service name collision.")
399
return self.rename(remove=False)
400
else:
401
logger.critical("D-Bus Exception", exc_info=error)
402
self.cleanup()
403
os._exit(1)
404
178
405
def remove(self):
179
406
"""Derived from the Avahi example code"""
180
407
if self.entry_group_state_changed_match is not None:
182
409
self.entry_group_state_changed_match = None
183
410
if self.group is not None:
184
411
self.group.Reset()
412
185
413
def add(self):
186
414
"""Derived from the Avahi example code"""
187
415
self.remove()
192
420
avahi.DBUS_INTERFACE_ENTRY_GROUP)
193
421
self.entry_group_state_changed_match = (
194
422
self.group.connect_to_signal(
195
'StateChanged', self .entry_group_state_changed))
423
'StateChanged', self.entry_group_state_changed))
196
424
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
197
425
self.name, self.type)
198
426
self.group.AddService(
204
432
dbus.UInt16(self.port),
205
433
avahi.string_array_to_txt_array(self.TXT))
206
434
self.group.Commit()
435
207
436
def entry_group_state_changed(self, state, error):
208
437
"""Derived from the Avahi example code"""
209
438
logger.debug("Avahi entry group state change: %i", state)
210
439
211
440
if state == avahi.ENTRY_GROUP_ESTABLISHED:
212
441
logger.debug("Zeroconf service established.")
213
442
elif state == avahi.ENTRY_GROUP_COLLISION:
215
444
self.rename()
216
445
elif state == avahi.ENTRY_GROUP_FAILURE:
217
446
logger.critical("Avahi: Error in group state changed %s",
218
unicode(error))
219
raise AvahiGroupError("State changed: %s"
220
% unicode(error))
447
str(error))
448
raise AvahiGroupError("State changed: {!s}".format(error))
449
221
450
def cleanup(self):
222
451
"""Derived from the Avahi example code"""
223
452
if self.group is not None:
224
453
try:
225
454
self.group.Free()
226
455
except (dbus.exceptions.UnknownMethodException,
227
dbus.exceptions.DBusException) as e:
456
dbus.exceptions.DBusException):
228
457
pass
229
458
self.group = None
230
459
self.remove()
460
231
461
def server_state_changed(self, state, error=None):
232
462
"""Derived from the Avahi example code"""
233
463
logger.debug("Avahi server state change: %i", state)
234
bad_states = { avahi.SERVER_INVALID:
235
"Zeroconf server invalid",
236
avahi.SERVER_REGISTERING: None,
237
avahi.SERVER_COLLISION:
238
"Zeroconf server name collision",
239
avahi.SERVER_FAILURE:
240
"Zeroconf server failure" }
464
bad_states = {
465
avahi.SERVER_INVALID: "Zeroconf server invalid",
466
avahi.SERVER_REGISTERING: None,
467
avahi.SERVER_COLLISION: "Zeroconf server name collision",
468
avahi.SERVER_FAILURE: "Zeroconf server failure",
469
}
241
470
if state in bad_states:
242
471
if bad_states[state] is not None:
243
472
if error is None:
246
475
logger.error(bad_states[state] + ": %r", error)
247
476
self.cleanup()
248
477
elif state == avahi.SERVER_RUNNING:
249
self.add()
478
try:
479
self.add()
480
except dbus.exceptions.DBusException as error:
481
if (error.get_dbus_name()
482
== "org.freedesktop.Avahi.CollisionError"):
483
logger.info("Local Zeroconf service name"
484
" collision.")
485
return self.rename(remove=False)
486
else:
487
logger.critical("D-Bus Exception", exc_info=error)
488
self.cleanup()
489
os._exit(1)
250
490
else:
251
491
if error is None:
252
492
logger.debug("Unknown state: %r", state)
253
493
else:
254
494
logger.debug("Unknown state: %r: %r", state, error)
495
255
496
def activate(self):
256
497
"""Derived from the Avahi example code"""
257
498
if self.server is None:
261
502
follow_name_owner_changes=True),
262
503
avahi.DBUS_INTERFACE_SERVER)
263
504
self.server.connect_to_signal("StateChanged",
264
self.server_state_changed)
505
self.server_state_changed)
265
506
self.server_state_changed(self.server.GetState())
266
507
267
508
268
def _timedelta_to_milliseconds(td):
269
"Convert a datetime.timedelta() to milliseconds"
270
return ((td.days * 24 * 60 * 60 * 1000)
271
+ (td.seconds * 1000)
272
+ (td.microseconds // 1000))
273
274
class Client(object):
509
class AvahiServiceToSyslog(AvahiService):
510
def rename(self, *args, **kwargs):
511
"""Add the new name to the syslog messages"""
512
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
513
syslogger.setFormatter(logging.Formatter(
514
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
515
.format(self.name)))
516
return ret
517
518
519
# Pretend that we have a GnuTLS module
520
class gnutls:
521
"""This isn't so much a class as it is a module-like namespace."""
522
523
library = ctypes.util.find_library("gnutls")
524
if library is None:
525
library = ctypes.util.find_library("gnutls-deb0")
526
_library = ctypes.cdll.LoadLibrary(library)
527
del library
528
529
# Unless otherwise indicated, the constants and types below are
530
# all from the gnutls/gnutls.h C header file.
531
532
# Constants
533
E_SUCCESS = 0
534
E_INTERRUPTED = -52
535
E_AGAIN = -28
536
CRT_OPENPGP = 2
537
CRT_RAWPK = 3
538
CLIENT = 2
539
SHUT_RDWR = 0
540
CRD_CERTIFICATE = 1
541
E_NO_CERTIFICATE_FOUND = -49
542
X509_FMT_DER = 0
543
NO_TICKETS = 1<<10
544
ENABLE_RAWPK = 1<<18
545
CTYPE_PEERS = 3
546
KEYID_USE_SHA256 = 1 # gnutls/x509.h
547
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
548
549
# Types
550
class session_int(ctypes.Structure):
551
_fields_ = []
552
session_t = ctypes.POINTER(session_int)
553
554
class certificate_credentials_st(ctypes.Structure):
555
_fields_ = []
556
certificate_credentials_t = ctypes.POINTER(
557
certificate_credentials_st)
558
certificate_type_t = ctypes.c_int
559
560
class datum_t(ctypes.Structure):
561
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
562
('size', ctypes.c_uint)]
563
564
class openpgp_crt_int(ctypes.Structure):
565
_fields_ = []
566
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
567
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
568
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
569
credentials_type_t = ctypes.c_int
570
transport_ptr_t = ctypes.c_void_p
571
close_request_t = ctypes.c_int
572
573
# Exceptions
574
class Error(Exception):
575
def __init__(self, message=None, code=None, args=()):
576
# Default usage is by a message string, but if a return
577
# code is passed, convert it to a string with
578
# gnutls.strerror()
579
self.code = code
580
if message is None and code is not None:
581
message = gnutls.strerror(code)
582
return super(gnutls.Error, self).__init__(
583
message, *args)
584
585
class CertificateSecurityError(Error):
586
pass
587
588
# Classes
589
class Credentials:
590
def __init__(self):
591
self._c_object = gnutls.certificate_credentials_t()
592
gnutls.certificate_allocate_credentials(
593
ctypes.byref(self._c_object))
594
self.type = gnutls.CRD_CERTIFICATE
595
596
def __del__(self):
597
gnutls.certificate_free_credentials(self._c_object)
598
599
class ClientSession:
600
def __init__(self, socket, credentials=None):
601
self._c_object = gnutls.session_t()
602
gnutls_flags = gnutls.CLIENT
603
if gnutls.check_version(b"3.5.6"):
604
gnutls_flags |= gnutls.NO_TICKETS
605
if gnutls.has_rawpk:
606
gnutls_flags |= gnutls.ENABLE_RAWPK
607
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
608
del gnutls_flags
609
gnutls.set_default_priority(self._c_object)
610
gnutls.transport_set_ptr(self._c_object, socket.fileno())
611
gnutls.handshake_set_private_extensions(self._c_object,
612
True)
613
self.socket = socket
614
if credentials is None:
615
credentials = gnutls.Credentials()
616
gnutls.credentials_set(self._c_object, credentials.type,
617
ctypes.cast(credentials._c_object,
618
ctypes.c_void_p))
619
self.credentials = credentials
620
621
def __del__(self):
622
gnutls.deinit(self._c_object)
623
624
def handshake(self):
625
return gnutls.handshake(self._c_object)
626
627
def send(self, data):
628
data = bytes(data)
629
data_len = len(data)
630
while data_len > 0:
631
data_len -= gnutls.record_send(self._c_object,
632
data[-data_len:],
633
data_len)
634
635
def bye(self):
636
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
637
638
# Error handling functions
639
def _error_code(result):
640
"""A function to raise exceptions on errors, suitable
641
for the 'restype' attribute on ctypes functions"""
642
if result >= 0:
643
return result
644
if result == gnutls.E_NO_CERTIFICATE_FOUND:
645
raise gnutls.CertificateSecurityError(code=result)
646
raise gnutls.Error(code=result)
647
648
def _retry_on_error(result, func, arguments):
649
"""A function to retry on some errors, suitable
650
for the 'errcheck' attribute on ctypes functions"""
651
while result < 0:
652
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
653
return _error_code(result)
654
result = func(*arguments)
655
return result
656
657
# Unless otherwise indicated, the function declarations below are
658
# all from the gnutls/gnutls.h C header file.
659
660
# Functions
661
priority_set_direct = _library.gnutls_priority_set_direct
662
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
663
ctypes.POINTER(ctypes.c_char_p)]
664
priority_set_direct.restype = _error_code
665
666
init = _library.gnutls_init
667
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
668
init.restype = _error_code
669
670
set_default_priority = _library.gnutls_set_default_priority
671
set_default_priority.argtypes = [session_t]
672
set_default_priority.restype = _error_code
673
674
record_send = _library.gnutls_record_send
675
record_send.argtypes = [session_t, ctypes.c_void_p,
676
ctypes.c_size_t]
677
record_send.restype = ctypes.c_ssize_t
678
record_send.errcheck = _retry_on_error
679
680
certificate_allocate_credentials = (
681
_library.gnutls_certificate_allocate_credentials)
682
certificate_allocate_credentials.argtypes = [
683
ctypes.POINTER(certificate_credentials_t)]
684
certificate_allocate_credentials.restype = _error_code
685
686
certificate_free_credentials = (
687
_library.gnutls_certificate_free_credentials)
688
certificate_free_credentials.argtypes = [
689
certificate_credentials_t]
690
certificate_free_credentials.restype = None
691
692
handshake_set_private_extensions = (
693
_library.gnutls_handshake_set_private_extensions)
694
handshake_set_private_extensions.argtypes = [session_t,
695
ctypes.c_int]
696
handshake_set_private_extensions.restype = None
697
698
credentials_set = _library.gnutls_credentials_set
699
credentials_set.argtypes = [session_t, credentials_type_t,
700
ctypes.c_void_p]
701
credentials_set.restype = _error_code
702
703
strerror = _library.gnutls_strerror
704
strerror.argtypes = [ctypes.c_int]
705
strerror.restype = ctypes.c_char_p
706
707
certificate_type_get = _library.gnutls_certificate_type_get
708
certificate_type_get.argtypes = [session_t]
709
certificate_type_get.restype = _error_code
710
711
certificate_get_peers = _library.gnutls_certificate_get_peers
712
certificate_get_peers.argtypes = [session_t,
713
ctypes.POINTER(ctypes.c_uint)]
714
certificate_get_peers.restype = ctypes.POINTER(datum_t)
715
716
global_set_log_level = _library.gnutls_global_set_log_level
717
global_set_log_level.argtypes = [ctypes.c_int]
718
global_set_log_level.restype = None
719
720
global_set_log_function = _library.gnutls_global_set_log_function
721
global_set_log_function.argtypes = [log_func]
722
global_set_log_function.restype = None
723
724
deinit = _library.gnutls_deinit
725
deinit.argtypes = [session_t]
726
deinit.restype = None
727
728
handshake = _library.gnutls_handshake
729
handshake.argtypes = [session_t]
730
handshake.restype = _error_code
731
handshake.errcheck = _retry_on_error
732
733
transport_set_ptr = _library.gnutls_transport_set_ptr
734
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
735
transport_set_ptr.restype = None
736
737
bye = _library.gnutls_bye
738
bye.argtypes = [session_t, close_request_t]
739
bye.restype = _error_code
740
bye.errcheck = _retry_on_error
741
742
check_version = _library.gnutls_check_version
743
check_version.argtypes = [ctypes.c_char_p]
744
check_version.restype = ctypes.c_char_p
745
746
_need_version = b"3.3.0"
747
if check_version(_need_version) is None:
748
raise self.Error("Needs GnuTLS {} or later"
749
.format(_need_version))
750
751
_tls_rawpk_version = b"3.6.6"
752
has_rawpk = bool(check_version(_tls_rawpk_version))
753
754
if has_rawpk:
755
# Types
756
class pubkey_st(ctypes.Structure):
757
_fields = []
758
pubkey_t = ctypes.POINTER(pubkey_st)
759
760
x509_crt_fmt_t = ctypes.c_int
761
762
# All the function declarations below are from gnutls/abstract.h
763
pubkey_init = _library.gnutls_pubkey_init
764
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
765
pubkey_init.restype = _error_code
766
767
pubkey_import = _library.gnutls_pubkey_import
768
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
769
x509_crt_fmt_t]
770
pubkey_import.restype = _error_code
771
772
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
773
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
774
ctypes.POINTER(ctypes.c_ubyte),
775
ctypes.POINTER(ctypes.c_size_t)]
776
pubkey_get_key_id.restype = _error_code
777
778
pubkey_deinit = _library.gnutls_pubkey_deinit
779
pubkey_deinit.argtypes = [pubkey_t]
780
pubkey_deinit.restype = None
781
else:
782
# All the function declarations below are from gnutls/openpgp.h
783
784
openpgp_crt_init = _library.gnutls_openpgp_crt_init
785
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
786
openpgp_crt_init.restype = _error_code
787
788
openpgp_crt_import = _library.gnutls_openpgp_crt_import
789
openpgp_crt_import.argtypes = [openpgp_crt_t,
790
ctypes.POINTER(datum_t),
791
openpgp_crt_fmt_t]
792
openpgp_crt_import.restype = _error_code
793
794
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
795
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
796
ctypes.POINTER(ctypes.c_uint)]
797
openpgp_crt_verify_self.restype = _error_code
798
799
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
800
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
801
openpgp_crt_deinit.restype = None
802
803
openpgp_crt_get_fingerprint = (
804
_library.gnutls_openpgp_crt_get_fingerprint)
805
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
806
ctypes.c_void_p,
807
ctypes.POINTER(
808
ctypes.c_size_t)]
809
openpgp_crt_get_fingerprint.restype = _error_code
810
811
if check_version(b"3.6.4"):
812
certificate_type_get2 = _library.gnutls_certificate_type_get2
813
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
814
certificate_type_get2.restype = _error_code
815
816
# Remove non-public functions
817
del _error_code, _retry_on_error
818
819
820
def call_pipe(connection, # : multiprocessing.Connection
821
func, *args, **kwargs):
822
"""This function is meant to be called by multiprocessing.Process
823
824
This function runs func(*args, **kwargs), and writes the resulting
825
return value on the provided multiprocessing.Connection.
826
"""
827
connection.send(func(*args, **kwargs))
828
connection.close()
829
830
831
class Client:
275
832
"""A representation of a client host served by this server.
276
833
277
834
Attributes:
278
_approved: bool(); 'None' if not yet approved/disapproved
835
approved: bool(); 'None' if not yet approved/disapproved
279
836
approval_delay: datetime.timedelta(); Time to wait for approval
280
837
approval_duration: datetime.timedelta(); Duration of one approval
281
checker: subprocess.Popen(); a running checker process used
282
to see if the client lives.
283
'None' if no process is running.
284
checker_callback_tag: a gobject event source tag, or None
838
checker: multiprocessing.Process(); a running checker process used
839
to see if the client lives. 'None' if no process is
840
running.
841
checker_callback_tag: a GLib event source tag, or None
285
842
checker_command: string; External command which is run to check
286
843
if client lives. %() expansions are done at
287
844
runtime with vars(self) as dict, so that for
288
845
instance %(name)s can be used in the command.
289
checker_initiator_tag: a gobject event source tag, or None
846
checker_initiator_tag: a GLib event source tag, or None
290
847
created: datetime.datetime(); (UTC) object creation
848
client_structure: Object describing what attributes a client has
849
and is used for storing the client at exit
291
850
current_checker_command: string; current running checker_command
292
disable_hook: If set, called by disable() as disable_hook(self)
293
disable_initiator_tag: a gobject event source tag, or None
851
disable_initiator_tag: a GLib event source tag, or None
294
852
enabled: bool()
295
853
fingerprint: string (40 or 32 hexadecimal digits); used to
296
uniquely identify the client
854
uniquely identify an OpenPGP client
855
key_id: string (64 hexadecimal digits); used to uniquely identify
856
a client using raw public keys
297
857
host: string; available for use by the checker command
298
858
interval: datetime.timedelta(); How often to start a new checker
299
859
last_approval_request: datetime.datetime(); (UTC) or None
300
860
last_checked_ok: datetime.datetime(); (UTC) or None
301
last_enabled: datetime.datetime(); (UTC)
861
last_checker_status: integer between 0 and 255 reflecting exit
862
status of last checker. -1 reflects crashed
863
checker, -2 means no checker completed yet.
864
last_checker_signal: The signal which killed the last checker, if
865
last_checker_status is -1
866
last_enabled: datetime.datetime(); (UTC) or None
302
867
name: string; from the config file, used in log messages and
303
868
D-Bus identifiers
304
869
secret: bytestring; sent verbatim (over TLS) to client
305
870
timeout: datetime.timedelta(); How long from last_checked_ok
306
871
until this client is disabled
307
extended_timeout: extra long timeout when password has been sent
872
extended_timeout: extra long timeout when secret has been sent
308
873
runtime_expansions: Allowed attributes for runtime expansion.
309
874
expires: datetime.datetime(); time (UTC) when a client will be
310
875
disabled, or None
876
server_settings: The server_settings dict from main()
311
877
"""
312
878
313
879
runtime_expansions = ("approval_delay", "approval_duration",
314
"created", "enabled", "fingerprint",
315
"host", "interval", "last_checked_ok",
880
"created", "enabled", "expires", "key_id",
881
"fingerprint", "host", "interval",
882
"last_approval_request", "last_checked_ok",
316
883
"last_enabled", "name", "timeout")
317
318
def timeout_milliseconds(self):
319
"Return the 'timeout' attribute in milliseconds"
320
return _timedelta_to_milliseconds(self.timeout)
321
322
def extended_timeout_milliseconds(self):
323
"Return the 'extended_timeout' attribute in milliseconds"
324
return _timedelta_to_milliseconds(self.extended_timeout)
325
326
def interval_milliseconds(self):
327
"Return the 'interval' attribute in milliseconds"
328
return _timedelta_to_milliseconds(self.interval)
329
330
def approval_delay_milliseconds(self):
331
return _timedelta_to_milliseconds(self.approval_delay)
332
333
def __init__(self, name = None, disable_hook=None, config=None):
334
"""Note: the 'checker' key in 'config' sets the
335
'checker_command' attribute and *not* the 'checker'
336
attribute."""
884
client_defaults = {
885
"timeout": "PT5M",
886
"extended_timeout": "PT15M",
887
"interval": "PT2M",
888
"checker": "fping -q -- %%(host)s",
889
"host": "",
890
"approval_delay": "PT0S",
891
"approval_duration": "PT1S",
892
"approved_by_default": "True",
893
"enabled": "True",
894
}
895
896
@staticmethod
897
def config_parser(config):
898
"""Construct a new dict of client settings of this form:
899
{ client_name: {setting_name: value, ...}, ...}
900
with exceptions for any special settings as defined above.
901
NOTE: Must be a pure function. Must return the same result
902
value given the same arguments.
903
"""
904
settings = {}
905
for client_name in config.sections():
906
section = dict(config.items(client_name))
907
client = settings[client_name] = {}
908
909
client["host"] = section["host"]
910
# Reformat values from string types to Python types
911
client["approved_by_default"] = config.getboolean(
912
client_name, "approved_by_default")
913
client["enabled"] = config.getboolean(client_name,
914
"enabled")
915
916
# Uppercase and remove spaces from key_id and fingerprint
917
# for later comparison purposes with return value from the
918
# key_id() and fingerprint() functions
919
client["key_id"] = (section.get("key_id", "").upper()
920
.replace(" ", ""))
921
client["fingerprint"] = (section["fingerprint"].upper()
922
.replace(" ", ""))
923
if "secret" in section:
924
client["secret"] = codecs.decode(section["secret"]
925
.encode("utf-8"),
926
"base64")
927
elif "secfile" in section:
928
with open(os.path.expanduser(os.path.expandvars
929
(section["secfile"])),
930
"rb") as secfile:
931
client["secret"] = secfile.read()
932
else:
933
raise TypeError("No secret or secfile for section {}"
934
.format(section))
935
client["timeout"] = string_to_delta(section["timeout"])
936
client["extended_timeout"] = string_to_delta(
937
section["extended_timeout"])
938
client["interval"] = string_to_delta(section["interval"])
939
client["approval_delay"] = string_to_delta(
940
section["approval_delay"])
941
client["approval_duration"] = string_to_delta(
942
section["approval_duration"])
943
client["checker_command"] = section["checker"]
944
client["last_approval_request"] = None
945
client["last_checked_ok"] = None
946
client["last_checker_status"] = -2
947
948
return settings
949
950
def __init__(self, settings, name=None, server_settings=None):
337
951
self.name = name
338
if config is None:
339
config = {}
952
if server_settings is None:
953
server_settings = {}
954
self.server_settings = server_settings
955
# adding all client settings
956
for setting, value in settings.items():
957
setattr(self, setting, value)
958
959
if self.enabled:
960
if not hasattr(self, "last_enabled"):
961
self.last_enabled = datetime.datetime.utcnow()
962
if not hasattr(self, "expires"):
963
self.expires = (datetime.datetime.utcnow()
964
+ self.timeout)
965
else:
966
self.last_enabled = None
967
self.expires = None
968
340
969
logger.debug("Creating client %r", self.name)
341
# Uppercase and remove spaces from fingerprint for later
342
# comparison purposes with return value from the fingerprint()
343
# function
344
self.fingerprint = (config["fingerprint"].upper()
345
.replace(" ", ""))
970
logger.debug(" Key ID: %s", self.key_id)
346
971
logger.debug(" Fingerprint: %s", self.fingerprint)
347
if "secret" in config:
348
self.secret = config["secret"].decode("base64")
349
elif "secfile" in config:
350
with open(os.path.expanduser(os.path.expandvars
351
(config["secfile"])),
352
"rb") as secfile:
353
self.secret = secfile.read()
354
else:
355
raise TypeError("No secret or secfile for client %s"
356
% self.name)
357
self.host = config.get("host", "")
358
self.created = datetime.datetime.utcnow()
359
self.enabled = False
360
self.last_approval_request = None
361
self.last_enabled = None
362
self.last_checked_ok = None
363
self.timeout = string_to_delta(config["timeout"])
364
self.extended_timeout = string_to_delta(config["extended_timeout"])
365
self.interval = string_to_delta(config["interval"])
366
self.disable_hook = disable_hook
972
self.created = settings.get("created",
973
datetime.datetime.utcnow())
974
975
# attributes specific for this server instance
367
976
self.checker = None
368
977
self.checker_initiator_tag = None
369
978
self.disable_initiator_tag = None
370
self.expires = None
371
979
self.checker_callback_tag = None
372
self.checker_command = config["checker"]
373
980
self.current_checker_command = None
374
self.last_connect = None
375
self._approved = None
376
self.approved_by_default = config.get("approved_by_default",
377
True)
981
self.approved = None
378
982
self.approvals_pending = 0
379
self.approval_delay = string_to_delta(
380
config["approval_delay"])
381
self.approval_duration = string_to_delta(
382
config["approval_duration"])
383
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
384
983
self.changedstate = multiprocessing_manager.Condition(
984
multiprocessing_manager.Lock())
985
self.client_structure = [attr
986
for attr in self.__dict__.keys()
987
if not attr.startswith("_")]
988
self.client_structure.append("client_structure")
989
990
for name, t in inspect.getmembers(
991
type(self), lambda obj: isinstance(obj, property)):
992
if not name.startswith("_"):
993
self.client_structure.append(name)
994
995
# Send notice to process children that client state has changed
385
996
def send_changedstate(self):
386
self.changedstate.acquire()
387
self.changedstate.notify_all()
388
self.changedstate.release()
389
997
with self.changedstate:
998
self.changedstate.notify_all()
999
390
1000
def enable(self):
391
1001
"""Start this client's checker and timeout hooks"""
392
1002
if getattr(self, "enabled", False):
393
1003
# Already enabled
394
1004
return
395
self.send_changedstate()
396
# Schedule a new checker to be started an 'interval' from now,
397
# and every interval from then on.
398
self.checker_initiator_tag = (gobject.timeout_add
399
(self.interval_milliseconds(),
400
self.start_checker))
401
# Schedule a disable() when 'timeout' has passed
402
1005
self.expires = datetime.datetime.utcnow() + self.timeout
403
self.disable_initiator_tag = (gobject.timeout_add
404
(self.timeout_milliseconds(),
405
self.disable))
406
1006
self.enabled = True
407
1007
self.last_enabled = datetime.datetime.utcnow()
408
# Also start a new checker *right now*.
409
self.start_checker()
410
1008
self.init_checker()
1009
self.send_changedstate()
1010
411
1011
def disable(self, quiet=True):
412
1012
"""Disable this client."""
413
1013
if not getattr(self, "enabled", False):
414
1014
return False
415
1015
if not quiet:
416
self.send_changedstate()
417
if not quiet:
418
1016
logger.info("Disabling client %s", self.name)
419
if getattr(self, "disable_initiator_tag", False):
420
gobject.source_remove(self.disable_initiator_tag)
1017
if getattr(self, "disable_initiator_tag", None) is not None:
1018
GLib.source_remove(self.disable_initiator_tag)
421
1019
self.disable_initiator_tag = None
422
1020
self.expires = None
423
if getattr(self, "checker_initiator_tag", False):
424
gobject.source_remove(self.checker_initiator_tag)
1021
if getattr(self, "checker_initiator_tag", None) is not None:
1022
GLib.source_remove(self.checker_initiator_tag)
425
1023
self.checker_initiator_tag = None
426
1024
self.stop_checker()
427
if self.disable_hook:
428
self.disable_hook(self)
429
1025
self.enabled = False
430
# Do not run this again if called by a gobject.timeout_add
1026
if not quiet:
1027
self.send_changedstate()
1028
# Do not run this again if called by a GLib.timeout_add
431
1029
return False
432
1030
433
1031
def __del__(self):
434
self.disable_hook = None
435
1032
self.disable()
436
437
def checker_callback(self, pid, condition, command):
1033
1034
def init_checker(self):
1035
# Schedule a new checker to be started an 'interval' from now,
1036
# and every interval from then on.
1037
if self.checker_initiator_tag is not None:
1038
GLib.source_remove(self.checker_initiator_tag)
1039
self.checker_initiator_tag = GLib.timeout_add(
1040
int(self.interval.total_seconds() * 1000),
1041
self.start_checker)
1042
# Schedule a disable() when 'timeout' has passed
1043
if self.disable_initiator_tag is not None:
1044
GLib.source_remove(self.disable_initiator_tag)
1045
self.disable_initiator_tag = GLib.timeout_add(
1046
int(self.timeout.total_seconds() * 1000), self.disable)
1047
# Also start a new checker *right now*.
1048
self.start_checker()
1049
1050
def checker_callback(self, source, condition, connection,
1051
command):
438
1052
"""The checker has completed, so take appropriate actions."""
1053
# Read return code from connection (see call_pipe)
1054
returncode = connection.recv()
1055
connection.close()
1056
self.checker.join()
439
1057
self.checker_callback_tag = None
440
1058
self.checker = None
441
if os.WIFEXITED(condition):
442
exitstatus = os.WEXITSTATUS(condition)
443
if exitstatus == 0:
1059
1060
if returncode >= 0:
1061
self.last_checker_status = returncode
1062
self.last_checker_signal = None
1063
if self.last_checker_status == 0:
444
1064
logger.info("Checker for %(name)s succeeded",
445
1065
vars(self))
446
1066
self.checked_ok()
447
1067
else:
448
logger.info("Checker for %(name)s failed",
449
vars(self))
1068
logger.info("Checker for %(name)s failed", vars(self))
450
1069
else:
1070
self.last_checker_status = -1
1071
self.last_checker_signal = -returncode
451
1072
logger.warning("Checker for %(name)s crashed?",
452
1073
vars(self))
453
454
def checked_ok(self, timeout=None):
455
"""Bump up the timeout for this client.
456
457
This should only be called when the client has been seen,
458
alive and well.
459
"""
1074
return False
1075
1076
def checked_ok(self):
1077
"""Assert that the client has been seen, alive and well."""
1078
self.last_checked_ok = datetime.datetime.utcnow()
1079
self.last_checker_status = 0
1080
self.last_checker_signal = None
1081
self.bump_timeout()
1082
1083
def bump_timeout(self, timeout=None):
1084
"""Bump up the timeout for this client."""
460
1085
if timeout is None:
461
1086
timeout = self.timeout
462
self.last_checked_ok = datetime.datetime.utcnow()
463
gobject.source_remove(self.disable_initiator_tag)
464
self.expires = datetime.datetime.utcnow() + timeout
465
self.disable_initiator_tag = (gobject.timeout_add
466
(_timedelta_to_milliseconds(timeout),
467
self.disable))
468
1087
if self.disable_initiator_tag is not None:
1088
GLib.source_remove(self.disable_initiator_tag)
1089
self.disable_initiator_tag = None
1090
if getattr(self, "enabled", False):
1091
self.disable_initiator_tag = GLib.timeout_add(
1092
int(timeout.total_seconds() * 1000), self.disable)
1093
self.expires = datetime.datetime.utcnow() + timeout
1094
469
1095
def need_approval(self):
470
1096
self.last_approval_request = datetime.datetime.utcnow()
471
1097
472
1098
def start_checker(self):
473
1099
"""Start a new checker subprocess if one is not running.
474
1100
475
1101
If a checker already exists, leave it running and do
476
1102
nothing."""
477
1103
# The reason for not killing a running checker is that if we
478
# did that, then if a checker (for some reason) started
479
# running slowly and taking more than 'interval' time, the
480
# client would inevitably timeout, since no checker would get
481
# a chance to run to completion. If we instead leave running
1104
# did that, and if a checker (for some reason) started running
1105
# slowly and taking more than 'interval' time, then the client
1106
# would inevitably timeout, since no checker would get a
1107
# chance to run to completion. If we instead leave running
482
1108
# checkers alone, the checker would have to take more time
483
1109
# than 'timeout' for the client to be disabled, which is as it
484
1110
# should be.
485
486
# If a checker exists, make sure it is not a zombie
487
try:
488
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
489
except (AttributeError, OSError) as error:
490
if (isinstance(error, OSError)
491
and error.errno != errno.ECHILD):
492
raise error
493
else:
494
if pid:
495
logger.warning("Checker was a zombie")
496
gobject.source_remove(self.checker_callback_tag)
497
self.checker_callback(pid, status,
498
self.current_checker_command)
1111
1112
if self.checker is not None and not self.checker.is_alive():
1113
logger.warning("Checker was not alive; joining")
1114
self.checker.join()
1115
self.checker = None
499
1116
# Start a new checker if needed
500
1117
if self.checker is None:
1118
# Escape attributes for the shell
1119
escaped_attrs = {
1120
attr: re.escape(str(getattr(self, attr)))
1121
for attr in self.runtime_expansions}
501
1122
try:
502
# In case checker_command has exactly one % operator
503
command = self.checker_command % self.host
504
except TypeError:
505
# Escape attributes for the shell
506
escaped_attrs = dict(
507
(attr,
508
re.escape(unicode(str(getattr(self, attr, "")),
509
errors=
510
'replace')))
511
for attr in
512
self.runtime_expansions)
513
514
try:
515
command = self.checker_command % escaped_attrs
516
except TypeError as error:
517
logger.error('Could not format string "%s":'
518
' %s', self.checker_command, error)
519
return True # Try again later
1123
command = self.checker_command % escaped_attrs
1124
except TypeError as error:
1125
logger.error('Could not format string "%s"',
1126
self.checker_command,
1127
exc_info=error)
1128
return True # Try again later
520
1129
self.current_checker_command = command
521
try:
522
logger.info("Starting checker %r for %s",
523
command, self.name)
524
# We don't need to redirect stdout and stderr, since
525
# in normal mode, that is already done by daemon(),
526
# and in debug mode we don't want to. (Stdin is
527
# always replaced by /dev/null.)
528
self.checker = subprocess.Popen(command,
529
close_fds=True,
530
shell=True, cwd="/")
531
self.checker_callback_tag = (gobject.child_watch_add
532
(self.checker.pid,
533
self.checker_callback,
534
data=command))
535
# The checker may have completed before the gobject
536
# watch was added. Check for this.
537
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
538
if pid:
539
gobject.source_remove(self.checker_callback_tag)
540
self.checker_callback(pid, status, command)
541
except OSError as error:
542
logger.error("Failed to start subprocess: %s",
543
error)
544
# Re-run this periodically if run by gobject.timeout_add
1130
logger.info("Starting checker %r for %s", command,
1131
self.name)
1132
# We don't need to redirect stdout and stderr, since
1133
# in normal mode, that is already done by daemon(),
1134
# and in debug mode we don't want to. (Stdin is
1135
# always replaced by /dev/null.)
1136
# The exception is when not debugging but nevertheless
1137
# running in the foreground; use the previously
1138
# created wnull.
1139
popen_args = {"close_fds": True,
1140
"shell": True,
1141
"cwd": "/"}
1142
if (not self.server_settings["debug"]
1143
and self.server_settings["foreground"]):
1144
popen_args.update({"stdout": wnull,
1145
"stderr": wnull})
1146
pipe = multiprocessing.Pipe(duplex=False)
1147
self.checker = multiprocessing.Process(
1148
target=call_pipe,
1149
args=(pipe[1], subprocess.call, command),
1150
kwargs=popen_args)
1151
self.checker.start()
1152
self.checker_callback_tag = GLib.io_add_watch(
1153
GLib.IOChannel.unix_new(pipe[0].fileno()),
1154
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1155
self.checker_callback, pipe[0], command)
1156
# Re-run this periodically if run by GLib.timeout_add
545
1157
return True
546
1158
547
1159
def stop_checker(self):
548
1160
"""Force the checker process, if any, to stop."""
549
1161
if self.checker_callback_tag:
550
gobject.source_remove(self.checker_callback_tag)
1162
GLib.source_remove(self.checker_callback_tag)
551
1163
self.checker_callback_tag = None
552
1164
if getattr(self, "checker", None) is None:
553
1165
return
554
1166
logger.debug("Stopping checker for %(name)s", vars(self))
555
try:
556
os.kill(self.checker.pid, signal.SIGTERM)
557
#time.sleep(0.5)
558
#if self.checker.poll() is None:
559
# os.kill(self.checker.pid, signal.SIGKILL)
560
except OSError as error:
561
if error.errno != errno.ESRCH: # No such process
562
raise
1167
self.checker.terminate()
563
1168
self.checker = None
564
1169
565
1170
566
def dbus_service_property(dbus_interface, signature="v",
567
access="readwrite", byte_arrays=False):
1171
def dbus_service_property(dbus_interface,
1172
signature="v",
1173
access="readwrite",
1174
byte_arrays=False):
568
1175
"""Decorators for marking methods of a DBusObjectWithProperties to
569
1176
become properties on the D-Bus.
570
1177
571
1178
The decorated method will be called with no arguments by "Get"
572
1179
and with one argument by "Set".
573
1180
574
1181
The parameters, where they are supported, are the same as
575
1182
dbus.service.method, except there is only "signature", since the
576
1183
type from Get() and the type sent to Set() is the same.
579
1186
# "Set" method, so we fail early here:
580
1187
if byte_arrays and signature != "ay":
581
1188
raise ValueError("Byte arrays not supported for non-'ay'"
582
" signature %r" % signature)
1189
" signature {!r}".format(signature))
1190
583
1191
def decorator(func):
584
1192
func._dbus_is_property = True
585
1193
func._dbus_interface = dbus_interface
588
1196
func._dbus_name = func.__name__
589
1197
if func._dbus_name.endswith("_dbus_property"):
590
1198
func._dbus_name = func._dbus_name[:-14]
591
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
592
return func
1199
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1200
return func
1201
1202
return decorator
1203
1204
1205
def dbus_interface_annotations(dbus_interface):
1206
"""Decorator for marking functions returning interface annotations
1207
1208
Usage:
1209
1210
@dbus_interface_annotations("org.example.Interface")
1211
def _foo(self): # Function name does not matter
1212
return {"org.freedesktop.DBus.Deprecated": "true",
1213
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1214
"false"}
1215
"""
1216
1217
def decorator(func):
1218
func._dbus_is_interface = True
1219
func._dbus_interface = dbus_interface
1220
func._dbus_name = dbus_interface
1221
return func
1222
1223
return decorator
1224
1225
1226
def dbus_annotations(annotations):
1227
"""Decorator to annotate D-Bus methods, signals or properties
1228
Usage:
1229
1230
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1231
"org.freedesktop.DBus.Property."
1232
"EmitsChangedSignal": "false"})
1233
@dbus_service_property("org.example.Interface", signature="b",
1234
access="r")
1235
def Property_dbus_property(self):
1236
return dbus.Boolean(False)
1237
1238
See also the DBusObjectWithAnnotations class.
1239
"""
1240
1241
def decorator(func):
1242
func._dbus_annotations = annotations
1243
return func
1244
593
1245
return decorator
594
1246
595
1247
596
1248
class DBusPropertyException(dbus.exceptions.DBusException):
597
1249
"""A base class for D-Bus property-related exceptions
598
1250
"""
599
def __unicode__(self):
600
return unicode(str(self))
1251
pass
601
1252
602
1253
603
1254
class DBusPropertyAccessException(DBusPropertyException):
612
1263
pass
613
1264
614
1265
615
class DBusObjectWithProperties(dbus.service.Object):
1266
class DBusObjectWithAnnotations(dbus.service.Object):
1267
"""A D-Bus object with annotations.
1268
1269
Classes inheriting from this can use the dbus_annotations
1270
decorator to add annotations to methods or signals.
1271
"""
1272
1273
@staticmethod
1274
def _is_dbus_thing(thing):
1275
"""Returns a function testing if an attribute is a D-Bus thing
1276
1277
If called like _is_dbus_thing("method") it returns a function
1278
suitable for use as predicate to inspect.getmembers().
1279
"""
1280
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1281
False)
1282
1283
def _get_all_dbus_things(self, thing):
1284
"""Returns a generator of (name, attribute) pairs
1285
"""
1286
return ((getattr(athing.__get__(self), "_dbus_name", name),
1287
athing.__get__(self))
1288
for cls in self.__class__.__mro__
1289
for name, athing in
1290
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1291
1292
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1293
out_signature="s",
1294
path_keyword='object_path',
1295
connection_keyword='connection')
1296
def Introspect(self, object_path, connection):
1297
"""Overloading of standard D-Bus method.
1298
1299
Inserts annotation tags on methods and signals.
1300
"""
1301
xmlstring = dbus.service.Object.Introspect(self, object_path,
1302
connection)
1303
try:
1304
document = xml.dom.minidom.parseString(xmlstring)
1305
1306
for if_tag in document.getElementsByTagName("interface"):
1307
# Add annotation tags
1308
for typ in ("method", "signal"):
1309
for tag in if_tag.getElementsByTagName(typ):
1310
annots = dict()
1311
for name, prop in (self.
1312
_get_all_dbus_things(typ)):
1313
if (name == tag.getAttribute("name")
1314
and prop._dbus_interface
1315
== if_tag.getAttribute("name")):
1316
annots.update(getattr(
1317
prop, "_dbus_annotations", {}))
1318
for name, value in annots.items():
1319
ann_tag = document.createElement(
1320
"annotation")
1321
ann_tag.setAttribute("name", name)
1322
ann_tag.setAttribute("value", value)
1323
tag.appendChild(ann_tag)
1324
# Add interface annotation tags
1325
for annotation, value in dict(
1326
itertools.chain.from_iterable(
1327
annotations().items()
1328
for name, annotations
1329
in self._get_all_dbus_things("interface")
1330
if name == if_tag.getAttribute("name")
1331
)).items():
1332
ann_tag = document.createElement("annotation")
1333
ann_tag.setAttribute("name", annotation)
1334
ann_tag.setAttribute("value", value)
1335
if_tag.appendChild(ann_tag)
1336
# Fix argument name for the Introspect method itself
1337
if (if_tag.getAttribute("name")
1338
== dbus.INTROSPECTABLE_IFACE):
1339
for cn in if_tag.getElementsByTagName("method"):
1340
if cn.getAttribute("name") == "Introspect":
1341
for arg in cn.getElementsByTagName("arg"):
1342
if (arg.getAttribute("direction")
1343
== "out"):
1344
arg.setAttribute("name",
1345
"xml_data")
1346
xmlstring = document.toxml("utf-8")
1347
document.unlink()
1348
except (AttributeError, xml.dom.DOMException,
1349
xml.parsers.expat.ExpatError) as error:
1350
logger.error("Failed to override Introspection method",
1351
exc_info=error)
1352
return xmlstring
1353
1354
1355
class DBusObjectWithProperties(DBusObjectWithAnnotations):
616
1356
"""A D-Bus object with properties.
617
1357
618
1358
Classes inheriting from this can use the dbus_service_property
619
1359
decorator to expose methods as D-Bus properties. It exposes the
620
1360
standard Get(), Set(), and GetAll() methods on the D-Bus.
621
1361
"""
622
623
@staticmethod
624
def _is_dbus_property(obj):
625
return getattr(obj, "_dbus_is_property", False)
626
627
def _get_all_dbus_properties(self):
628
"""Returns a generator of (name, attribute) pairs
629
"""
630
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
631
for cls in self.__class__.__mro__
632
for name, prop in inspect.getmembers(cls, self._is_dbus_property))
633
1362
634
1363
def _get_dbus_property(self, interface_name, property_name):
635
1364
"""Returns a bound method if one exists which is a D-Bus
636
1365
property with the specified name and interface.
637
1366
"""
638
for cls in self.__class__.__mro__:
639
for name, value in inspect.getmembers(cls, self._is_dbus_property):
640
if value._dbus_name == property_name and value._dbus_interface == interface_name:
1367
for cls in self.__class__.__mro__:
1368
for name, value in inspect.getmembers(
1369
cls, self._is_dbus_thing("property")):
1370
if (value._dbus_name == property_name
1371
and value._dbus_interface == interface_name):
641
1372
return value.__get__(self)
642
1373
643
1374
# No such property
644
raise DBusPropertyNotFound(self.dbus_object_path + ":"
645
+ interface_name + "."
646
+ property_name)
647
648
649
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1375
raise DBusPropertyNotFound("{}:{}.{}".format(
1376
self.dbus_object_path, interface_name, property_name))
1377
1378
@classmethod
1379
def _get_all_interface_names(cls):
1380
"""Get a sequence of all interfaces supported by an object"""
1381
return (name for name in set(getattr(getattr(x, attr),
1382
"_dbus_interface", None)
1383
for x in (inspect.getmro(cls))
1384
for attr in dir(x))
1385
if name is not None)
1386
1387
@dbus.service.method(dbus.PROPERTIES_IFACE,
1388
in_signature="ss",
650
1389
out_signature="v")
651
1390
def Get(self, interface_name, property_name):
652
1391
"""Standard D-Bus property Get() method, see D-Bus standard.
658
1397
if not hasattr(value, "variant_level"):
659
1398
return value
660
1399
return type(value)(value, variant_level=value.variant_level+1)
661
1400
662
1401
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
663
1402
def Set(self, interface_name, property_name, value):
664
1403
"""Standard D-Bus property Set() method, see D-Bus standard.
670
1409
# The byte_arrays option is not supported yet on
671
1410
# signatures other than "ay".
672
1411
if prop._dbus_signature != "ay":
673
raise ValueError
674
value = dbus.ByteArray(''.join(unichr(byte)
675
for byte in value))
1412
raise ValueError("Byte arrays not supported for non-"
1413
"'ay' signature {!r}"
1414
.format(prop._dbus_signature))
1415
value = dbus.ByteArray(b''.join(chr(byte)
1416
for byte in value))
676
1417
prop(value)
677
678
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1418
1419
@dbus.service.method(dbus.PROPERTIES_IFACE,
1420
in_signature="s",
679
1421
out_signature="a{sv}")
680
1422
def GetAll(self, interface_name):
681
1423
"""Standard D-Bus property GetAll() method, see D-Bus
682
1424
standard.
683
1425
684
1426
Note: Will not include properties with access="write".
685
1427
"""
686
all = {}
687
for name, prop in self._get_all_dbus_properties():
1428
properties = {}
1429
for name, prop in self._get_all_dbus_things("property"):
688
1430
if (interface_name
689
1431
and interface_name != prop._dbus_interface):
690
1432
# Interface non-empty but did not match
694
1436
continue
695
1437
value = prop()
696
1438
if not hasattr(value, "variant_level"):
697
all[name] = value
1439
properties[name] = value
698
1440
continue
699
all[name] = type(value)(value, variant_level=
700
value.variant_level+1)
701
return dbus.Dictionary(all, signature="sv")
702
1441
properties[name] = type(value)(
1442
value, variant_level=value.variant_level + 1)
1443
return dbus.Dictionary(properties, signature="sv")
1444
1445
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1446
def PropertiesChanged(self, interface_name, changed_properties,
1447
invalidated_properties):
1448
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1449
standard.
1450
"""
1451
pass
1452
703
1453
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
704
1454
out_signature="s",
705
1455
path_keyword='object_path',
706
1456
connection_keyword='connection')
707
1457
def Introspect(self, object_path, connection):
708
"""Standard D-Bus method, overloaded to insert property tags.
1458
"""Overloading of standard D-Bus method.
1459
1460
Inserts property tags and interface annotation tags.
709
1461
"""
710
xmlstring = dbus.service.Object.Introspect(self, object_path,
711
connection)
1462
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1463
object_path,
1464
connection)
712
1465
try:
713
1466
document = xml.dom.minidom.parseString(xmlstring)
1467
714
1468
def make_tag(document, name, prop):
715
1469
e = document.createElement("property")
716
1470
e.setAttribute("name", name)
717
1471
e.setAttribute("type", prop._dbus_signature)
718
1472
e.setAttribute("access", prop._dbus_access)
719
1473
return e
1474
720
1475
for if_tag in document.getElementsByTagName("interface"):
1476
# Add property tags
721
1477
for tag in (make_tag(document, name, prop)
722
1478
for name, prop
723
in self._get_all_dbus_properties()
1479
in self._get_all_dbus_things("property")
724
1480
if prop._dbus_interface
725
1481
== if_tag.getAttribute("name")):
726
1482
if_tag.appendChild(tag)
1483
# Add annotation tags for properties
1484
for tag in if_tag.getElementsByTagName("property"):
1485
annots = dict()
1486
for name, prop in self._get_all_dbus_things(
1487
"property"):
1488
if (name == tag.getAttribute("name")
1489
and prop._dbus_interface
1490
== if_tag.getAttribute("name")):
1491
annots.update(getattr(
1492
prop, "_dbus_annotations", {}))
1493
for name, value in annots.items():
1494
ann_tag = document.createElement(
1495
"annotation")
1496
ann_tag.setAttribute("name", name)
1497
ann_tag.setAttribute("value", value)
1498
tag.appendChild(ann_tag)
727
1499
# Add the names to the return values for the
728
1500
# "org.freedesktop.DBus.Properties" methods
729
1501
if (if_tag.getAttribute("name")
744
1516
except (AttributeError, xml.dom.DOMException,
745
1517
xml.parsers.expat.ExpatError) as error:
746
1518
logger.error("Failed to override Introspection method",
747
error)
748
return xmlstring
749
750
751
def datetime_to_dbus (dt, variant_level=0):
1519
exc_info=error)
1520
return xmlstring
1521
1522
1523
try:
1524
dbus.OBJECT_MANAGER_IFACE
1525
except AttributeError:
1526
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1527
1528
1529
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1530
"""A D-Bus object with an ObjectManager.
1531
1532
Classes inheriting from this exposes the standard
1533
GetManagedObjects call and the InterfacesAdded and
1534
InterfacesRemoved signals on the standard
1535
"org.freedesktop.DBus.ObjectManager" interface.
1536
1537
Note: No signals are sent automatically; they must be sent
1538
manually.
1539
"""
1540
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1541
out_signature="a{oa{sa{sv}}}")
1542
def GetManagedObjects(self):
1543
"""This function must be overridden"""
1544
raise NotImplementedError()
1545
1546
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1547
signature="oa{sa{sv}}")
1548
def InterfacesAdded(self, object_path, interfaces_and_properties):
1549
pass
1550
1551
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1552
def InterfacesRemoved(self, object_path, interfaces):
1553
pass
1554
1555
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1556
out_signature="s",
1557
path_keyword='object_path',
1558
connection_keyword='connection')
1559
def Introspect(self, object_path, connection):
1560
"""Overloading of standard D-Bus method.
1561
1562
Override return argument name of GetManagedObjects to be
1563
"objpath_interfaces_and_properties"
1564
"""
1565
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1566
object_path,
1567
connection)
1568
try:
1569
document = xml.dom.minidom.parseString(xmlstring)
1570
1571
for if_tag in document.getElementsByTagName("interface"):
1572
# Fix argument name for the GetManagedObjects method
1573
if (if_tag.getAttribute("name")
1574
== dbus.OBJECT_MANAGER_IFACE):
1575
for cn in if_tag.getElementsByTagName("method"):
1576
if (cn.getAttribute("name")
1577
== "GetManagedObjects"):
1578
for arg in cn.getElementsByTagName("arg"):
1579
if (arg.getAttribute("direction")
1580
== "out"):
1581
arg.setAttribute(
1582
"name",
1583
"objpath_interfaces"
1584
"_and_properties")
1585
xmlstring = document.toxml("utf-8")
1586
document.unlink()
1587
except (AttributeError, xml.dom.DOMException,
1588
xml.parsers.expat.ExpatError) as error:
1589
logger.error("Failed to override Introspection method",
1590
exc_info=error)
1591
return xmlstring
1592
1593
1594
def datetime_to_dbus(dt, variant_level=0):
752
1595
"""Convert a UTC datetime.datetime() to a D-Bus type."""
753
1596
if dt is None:
754
return dbus.String("", variant_level = variant_level)
755
return dbus.String(dt.isoformat(),
756
variant_level=variant_level)
757
758
class transitional_dbus_metaclass(DBusObjectWithProperties.__metaclass__):
759
def __new__(mcs, name, bases, attr):
760
for attrname, old_dbusobj in inspect.getmembers(bases[0]):
761
new_interface = getattr(old_dbusobj, "_dbus_interface", "").replace("se.bsnet.fukt.", "se.recompile.")
762
if (getattr(old_dbusobj, "_dbus_is_signal", False)
763
and old_dbusobj._dbus_interface.startswith("se.bsnet.fukt.Mandos")):
764
unwrappedfunc = dict(zip(old_dbusobj.func_code.co_freevars,
765
old_dbusobj.__closure__))["func"].cell_contents
766
newfunc = types.FunctionType(unwrappedfunc.func_code,
767
unwrappedfunc.func_globals,
768
unwrappedfunc.func_name,
769
unwrappedfunc.func_defaults,
770
unwrappedfunc.func_closure)
771
new_dbusfunc = dbus.service.signal(
772
new_interface, old_dbusobj._dbus_signature)(newfunc)
773
attr["_transitional_" + attrname] = new_dbusfunc
774
775
def fixscope(func1, func2):
776
def newcall(*args, **kwargs):
777
func1(*args, **kwargs)
778
func2(*args, **kwargs)
779
return newcall
780
781
attr[attrname] = fixscope(old_dbusobj, new_dbusfunc)
782
783
elif (getattr(old_dbusobj, "_dbus_is_method", False)
784
and old_dbusobj._dbus_interface.startswith("se.bsnet.fukt.Mandos")):
785
new_dbusfunc = (dbus.service.method
786
(new_interface,
787
old_dbusobj._dbus_in_signature,
788
old_dbusobj._dbus_out_signature)
789
(types.FunctionType
790
(old_dbusobj.func_code,
791
old_dbusobj.func_globals,
792
old_dbusobj.func_name,
793
old_dbusobj.func_defaults,
794
old_dbusobj.func_closure)))
795
796
attr[attrname] = new_dbusfunc
797
elif (getattr(old_dbusobj, "_dbus_is_property", False)
798
and old_dbusobj._dbus_interface.startswith("se.bsnet.fukt.Mandos")):
799
new_dbusfunc = (dbus_service_property
800
(new_interface,
801
old_dbusobj._dbus_signature,
802
old_dbusobj._dbus_access,
803
old_dbusobj._dbus_get_args_options["byte_arrays"])
804
(types.FunctionType
805
(old_dbusobj.func_code,
806
old_dbusobj.func_globals,
807
old_dbusobj.func_name,
808
old_dbusobj.func_defaults,
809
old_dbusobj.func_closure)))
810
811
attr[attrname] = new_dbusfunc
812
return type.__new__(mcs, name, bases, attr)
813
1597
return dbus.String("", variant_level=variant_level)
1598
return dbus.String(dt.isoformat(), variant_level=variant_level)
1599
1600
1601
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1602
"""A class decorator; applied to a subclass of
1603
dbus.service.Object, it will add alternate D-Bus attributes with
1604
interface names according to the "alt_interface_names" mapping.
1605
Usage:
1606
1607
@alternate_dbus_interfaces({"org.example.Interface":
1608
"net.example.AlternateInterface"})
1609
class SampleDBusObject(dbus.service.Object):
1610
@dbus.service.method("org.example.Interface")
1611
def SampleDBusMethod():
1612
pass
1613
1614
The above "SampleDBusMethod" on "SampleDBusObject" will be
1615
reachable via two interfaces: "org.example.Interface" and
1616
"net.example.AlternateInterface", the latter of which will have
1617
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1618
"true", unless "deprecate" is passed with a False value.
1619
1620
This works for methods and signals, and also for D-Bus properties
1621
(from DBusObjectWithProperties) and interfaces (from the
1622
dbus_interface_annotations decorator).
1623
"""
1624
1625
def wrapper(cls):
1626
for orig_interface_name, alt_interface_name in (
1627
alt_interface_names.items()):
1628
attr = {}
1629
interface_names = set()
1630
# Go though all attributes of the class
1631
for attrname, attribute in inspect.getmembers(cls):
1632
# Ignore non-D-Bus attributes, and D-Bus attributes
1633
# with the wrong interface name
1634
if (not hasattr(attribute, "_dbus_interface")
1635
or not attribute._dbus_interface.startswith(
1636
orig_interface_name)):
1637
continue
1638
# Create an alternate D-Bus interface name based on
1639
# the current name
1640
alt_interface = attribute._dbus_interface.replace(
1641
orig_interface_name, alt_interface_name)
1642
interface_names.add(alt_interface)
1643
# Is this a D-Bus signal?
1644
if getattr(attribute, "_dbus_is_signal", False):
1645
# Extract the original non-method undecorated
1646
# function by black magic
1647
if sys.version_info.major == 2:
1648
nonmethod_func = (dict(
1649
zip(attribute.func_code.co_freevars,
1650
attribute.__closure__))
1651
["func"].cell_contents)
1652
else:
1653
nonmethod_func = (dict(
1654
zip(attribute.__code__.co_freevars,
1655
attribute.__closure__))
1656
["func"].cell_contents)
1657
# Create a new, but exactly alike, function
1658
# object, and decorate it to be a new D-Bus signal
1659
# with the alternate D-Bus interface name
1660
new_function = copy_function(nonmethod_func)
1661
new_function = (dbus.service.signal(
1662
alt_interface,
1663
attribute._dbus_signature)(new_function))
1664
# Copy annotations, if any
1665
try:
1666
new_function._dbus_annotations = dict(
1667
attribute._dbus_annotations)
1668
except AttributeError:
1669
pass
1670
1671
# Define a creator of a function to call both the
1672
# original and alternate functions, so both the
1673
# original and alternate signals gets sent when
1674
# the function is called
1675
def fixscope(func1, func2):
1676
"""This function is a scope container to pass
1677
func1 and func2 to the "call_both" function
1678
outside of its arguments"""
1679
1680
@functools.wraps(func2)
1681
def call_both(*args, **kwargs):
1682
"""This function will emit two D-Bus
1683
signals by calling func1 and func2"""
1684
func1(*args, **kwargs)
1685
func2(*args, **kwargs)
1686
# Make wrapper function look like a D-Bus
1687
# signal
1688
for name, attr in inspect.getmembers(func2):
1689
if name.startswith("_dbus_"):
1690
setattr(call_both, name, attr)
1691
1692
return call_both
1693
# Create the "call_both" function and add it to
1694
# the class
1695
attr[attrname] = fixscope(attribute, new_function)
1696
# Is this a D-Bus method?
1697
elif getattr(attribute, "_dbus_is_method", False):
1698
# Create a new, but exactly alike, function
1699
# object. Decorate it to be a new D-Bus method
1700
# with the alternate D-Bus interface name. Add it
1701
# to the class.
1702
attr[attrname] = (
1703
dbus.service.method(
1704
alt_interface,
1705
attribute._dbus_in_signature,
1706
attribute._dbus_out_signature)
1707
(copy_function(attribute)))
1708
# Copy annotations, if any
1709
try:
1710
attr[attrname]._dbus_annotations = dict(
1711
attribute._dbus_annotations)
1712
except AttributeError:
1713
pass
1714
# Is this a D-Bus property?
1715
elif getattr(attribute, "_dbus_is_property", False):
1716
# Create a new, but exactly alike, function
1717
# object, and decorate it to be a new D-Bus
1718
# property with the alternate D-Bus interface
1719
# name. Add it to the class.
1720
attr[attrname] = (dbus_service_property(
1721
alt_interface, attribute._dbus_signature,
1722
attribute._dbus_access,
1723
attribute._dbus_get_args_options
1724
["byte_arrays"])
1725
(copy_function(attribute)))
1726
# Copy annotations, if any
1727
try:
1728
attr[attrname]._dbus_annotations = dict(
1729
attribute._dbus_annotations)
1730
except AttributeError:
1731
pass
1732
# Is this a D-Bus interface?
1733
elif getattr(attribute, "_dbus_is_interface", False):
1734
# Create a new, but exactly alike, function
1735
# object. Decorate it to be a new D-Bus interface
1736
# with the alternate D-Bus interface name. Add it
1737
# to the class.
1738
attr[attrname] = (
1739
dbus_interface_annotations(alt_interface)
1740
(copy_function(attribute)))
1741
if deprecate:
1742
# Deprecate all alternate interfaces
1743
iname = "_AlternateDBusNames_interface_annotation{}"
1744
for interface_name in interface_names:
1745
1746
@dbus_interface_annotations(interface_name)
1747
def func(self):
1748
return {"org.freedesktop.DBus.Deprecated":
1749
"true"}
1750
# Find an unused name
1751
for aname in (iname.format(i)
1752
for i in itertools.count()):
1753
if aname not in attr:
1754
attr[aname] = func
1755
break
1756
if interface_names:
1757
# Replace the class with a new subclass of it with
1758
# methods, signals, etc. as created above.
1759
if sys.version_info.major == 2:
1760
cls = type(b"{}Alternate".format(cls.__name__),
1761
(cls, ), attr)
1762
else:
1763
cls = type("{}Alternate".format(cls.__name__),
1764
(cls, ), attr)
1765
return cls
1766
1767
return wrapper
1768
1769
1770
@alternate_dbus_interfaces({"se.recompile.Mandos":
1771
"se.bsnet.fukt.Mandos"})
814
1772
class ClientDBus(Client, DBusObjectWithProperties):
815
1773
"""A Client class using D-Bus
816
1774
817
1775
Attributes:
818
1776
dbus_object_path: dbus.ObjectPath
819
1777
bus: dbus.SystemBus()
820
1778
"""
821
1779
822
1780
runtime_expansions = (Client.runtime_expansions
823
+ ("dbus_object_path",))
824
1781
+ ("dbus_object_path", ))
1782
1783
_interface = "se.recompile.Mandos.Client"
1784
825
1785
# dbus.service.Object doesn't use super(), so we can't either.
826
827
def __init__(self, bus = None, *args, **kwargs):
828
self._approvals_pending = 0
1786
1787
def __init__(self, bus=None, *args, **kwargs):
829
1788
self.bus = bus
830
1789
Client.__init__(self, *args, **kwargs)
831
1790
# Only now, when this client is initialized, can it show up on
832
1791
# the D-Bus
833
client_object_name = unicode(self.name).translate(
1792
client_object_name = str(self.name).translate(
834
1793
{ord("."): ord("_"),
835
1794
ord("-"): ord("_")})
836
self.dbus_object_path = (dbus.ObjectPath
837
("/clients/" + client_object_name))
1795
self.dbus_object_path = dbus.ObjectPath(
1796
"/clients/" + client_object_name)
838
1797
DBusObjectWithProperties.__init__(self, self.bus,
839
1798
self.dbus_object_path)
840
841
def notifychangeproperty(transform_func,
842
dbus_name, type_func=lambda x: x,
843
variant_level=1):
844
""" Modify a variable so that its a property that announce its
845
changes to DBus.
846
transform_fun: Function that takes a value and transform it to
847
DBus type.
848
dbus_name: DBus name of the variable
1799
1800
def notifychangeproperty(transform_func, dbus_name,
1801
type_func=lambda x: x,
1802
variant_level=1,
1803
invalidate_only=False,
1804
_interface=_interface):
1805
""" Modify a variable so that it's a property which announces
1806
its changes to DBus.
1807
1808
transform_fun: Function that takes a value and a variant_level
1809
and transforms it to a D-Bus type.
1810
dbus_name: D-Bus name of the variable
849
1811
type_func: Function that transform the value before sending it
850
to DBus
851
variant_level: DBus variant level. default: 1
1812
to the D-Bus. Default: no transform
1813
variant_level: D-Bus variant level. Default: 1
852
1814
"""
853
real_value = [None,]
1815
attrname = "_{}".format(dbus_name)
1816
854
1817
def setter(self, value):
855
old_value = real_value[0]
856
real_value[0] = value
857
1818
if hasattr(self, "dbus_object_path"):
858
if type_func(old_value) != type_func(real_value[0]):
859
dbus_value = transform_func(type_func(real_value[0]),
860
variant_level)
861
self.PropertyChanged(dbus.String(dbus_name),
862
dbus_value)
863
864
return property(lambda self: real_value[0], setter)
865
866
1819
if (not hasattr(self, attrname) or
1820
type_func(getattr(self, attrname, None))
1821
!= type_func(value)):
1822
if invalidate_only:
1823
self.PropertiesChanged(
1824
_interface, dbus.Dictionary(),
1825
dbus.Array((dbus_name, )))
1826
else:
1827
dbus_value = transform_func(
1828
type_func(value),
1829
variant_level=variant_level)
1830
self.PropertyChanged(dbus.String(dbus_name),
1831
dbus_value)
1832
self.PropertiesChanged(
1833
_interface,
1834
dbus.Dictionary({dbus.String(dbus_name):
1835
dbus_value}),
1836
dbus.Array())
1837
setattr(self, attrname, value)
1838
1839
return property(lambda self: getattr(self, attrname), setter)
1840
867
1841
expires = notifychangeproperty(datetime_to_dbus, "Expires")
868
1842
approvals_pending = notifychangeproperty(dbus.Boolean,
869
1843
"ApprovalPending",
870
type_func = bool)
1844
type_func=bool)
871
1845
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
872
1846
last_enabled = notifychangeproperty(datetime_to_dbus,
873
1847
"LastEnabled")
874
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
875
type_func = lambda checker: checker is not None)
1848
checker = notifychangeproperty(
1849
dbus.Boolean, "CheckerRunning",
1850
type_func=lambda checker: checker is not None)
876
1851
last_checked_ok = notifychangeproperty(datetime_to_dbus,
877
1852
"LastCheckedOK")
878
last_approval_request = notifychangeproperty(datetime_to_dbus,
879
"LastApprovalRequest")
1853
last_checker_status = notifychangeproperty(dbus.Int16,
1854
"LastCheckerStatus")
1855
last_approval_request = notifychangeproperty(
1856
datetime_to_dbus, "LastApprovalRequest")
880
1857
approved_by_default = notifychangeproperty(dbus.Boolean,
881
1858
"ApprovedByDefault")
882
approval_delay = notifychangeproperty(dbus.UInt16, "ApprovalDelay",
883
type_func = _timedelta_to_milliseconds)
884
approval_duration = notifychangeproperty(dbus.UInt16, "ApprovalDuration",
885
type_func = _timedelta_to_milliseconds)
1859
approval_delay = notifychangeproperty(
1860
dbus.UInt64, "ApprovalDelay",
1861
type_func=lambda td: td.total_seconds() * 1000)
1862
approval_duration = notifychangeproperty(
1863
dbus.UInt64, "ApprovalDuration",
1864
type_func=lambda td: td.total_seconds() * 1000)
886
1865
host = notifychangeproperty(dbus.String, "Host")
887
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
888
type_func = _timedelta_to_milliseconds)
889
extended_timeout = notifychangeproperty(dbus.UInt16, "ExtendedTimeout",
890
type_func = _timedelta_to_milliseconds)
891
interval = notifychangeproperty(dbus.UInt16, "Interval",
892
type_func = _timedelta_to_milliseconds)
1866
timeout = notifychangeproperty(
1867
dbus.UInt64, "Timeout",
1868
type_func=lambda td: td.total_seconds() * 1000)
1869
extended_timeout = notifychangeproperty(
1870
dbus.UInt64, "ExtendedTimeout",
1871
type_func=lambda td: td.total_seconds() * 1000)
1872
interval = notifychangeproperty(
1873
dbus.UInt64, "Interval",
1874
type_func=lambda td: td.total_seconds() * 1000)
893
1875
checker_command = notifychangeproperty(dbus.String, "Checker")
894
1876
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1877
invalidate_only=True)
1878
895
1879
del notifychangeproperty
896
1880
897
1881
def __del__(self, *args, **kwargs):
898
1882
try:
899
1883
self.remove_from_connection()
902
1886
if hasattr(DBusObjectWithProperties, "__del__"):
903
1887
DBusObjectWithProperties.__del__(self, *args, **kwargs)
904
1888
Client.__del__(self, *args, **kwargs)
905
906
def checker_callback(self, pid, condition, command,
907
*args, **kwargs):
908
self.checker_callback_tag = None
909
self.checker = None
910
if os.WIFEXITED(condition):
911
exitstatus = os.WEXITSTATUS(condition)
1889
1890
def checker_callback(self, source, condition,
1891
connection, command, *args, **kwargs):
1892
ret = Client.checker_callback(self, source, condition,
1893
connection, command, *args,
1894
**kwargs)
1895
exitstatus = self.last_checker_status
1896
if exitstatus >= 0:
912
1897
# Emit D-Bus signal
913
1898
self.CheckerCompleted(dbus.Int16(exitstatus),
914
dbus.Int64(condition),
1899
# This is specific to GNU libC
1900
dbus.Int64(exitstatus << 8),
915
1901
dbus.String(command))
916
1902
else:
917
1903
# Emit D-Bus signal
918
1904
self.CheckerCompleted(dbus.Int16(-1),
919
dbus.Int64(condition),
1905
dbus.Int64(
1906
# This is specific to GNU libC
1907
(exitstatus << 8)
1908
| self.last_checker_signal),
920
1909
dbus.String(command))
921
922
return Client.checker_callback(self, pid, condition, command,
923
*args, **kwargs)
924
1910
return ret
1911
925
1912
def start_checker(self, *args, **kwargs):
926
old_checker = self.checker
927
if self.checker is not None:
928
old_checker_pid = self.checker.pid
929
else:
930
old_checker_pid = None
1913
old_checker_pid = getattr(self.checker, "pid", None)
931
1914
r = Client.start_checker(self, *args, **kwargs)
932
1915
# Only if new checker process was started
933
1916
if (self.checker is not None
935
1918
# Emit D-Bus signal
936
1919
self.CheckerStarted(self.current_checker_command)
937
1920
return r
938
1921
939
1922
def _reset_approved(self):
940
self._approved = None
1923
self.approved = None
941
1924
return False
942
1925
943
1926
def approve(self, value=True):
1927
self.approved = value
1928
GLib.timeout_add(int(self.approval_duration.total_seconds()
1929
* 1000), self._reset_approved)
944
1930
self.send_changedstate()
945
self._approved = value
946
gobject.timeout_add(_timedelta_to_milliseconds
947
(self.approval_duration),
948
self._reset_approved)
949
950
951
## D-Bus methods, signals & properties
952
_interface = "se.bsnet.fukt.Mandos.Client"
953
954
## Signals
955
1931
1932
# D-Bus methods, signals & properties
1933
1934
# Interfaces
1935
1936
# Signals
1937
956
1938
# CheckerCompleted - signal
957
1939
@dbus.service.signal(_interface, signature="nxs")
958
1940
def CheckerCompleted(self, exitcode, waitstatus, command):
959
1941
"D-Bus signal"
960
1942
pass
961
1943
962
1944
# CheckerStarted - signal
963
1945
@dbus.service.signal(_interface, signature="s")
964
1946
def CheckerStarted(self, command):
965
1947
"D-Bus signal"
966
1948
pass
967
1949
968
1950
# PropertyChanged - signal
1951
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
969
1952
@dbus.service.signal(_interface, signature="sv")
970
1953
def PropertyChanged(self, property, value):
971
1954
"D-Bus signal"
972
1955
pass
973
1956
974
1957
# GotSecret - signal
975
1958
@dbus.service.signal(_interface)
976
1959
def GotSecret(self):
979
1962
server to mandos-client
980
1963
"""
981
1964
pass
982
1965
983
1966
# Rejected - signal
984
1967
@dbus.service.signal(_interface, signature="s")
985
1968
def Rejected(self, reason):
986
1969
"D-Bus signal"
987
1970
pass
988
1971
989
1972
# NeedApproval - signal
990
1973
@dbus.service.signal(_interface, signature="tb")
991
1974
def NeedApproval(self, timeout, default):
992
1975
"D-Bus signal"
993
1976
return self.need_approval()
994
995
## Methods
996
1977
1978
# Methods
1979
997
1980
# Approve - method
998
1981
@dbus.service.method(_interface, in_signature="b")
999
1982
def Approve(self, value):
1000
1983
self.approve(value)
1001
1984
1002
1985
# CheckedOK - method
1003
1986
@dbus.service.method(_interface)
1004
1987
def CheckedOK(self):
1005
1988
self.checked_ok()
1006
1989
1007
1990
# Enable - method
1991
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1008
1992
@dbus.service.method(_interface)
1009
1993
def Enable(self):
1010
1994
"D-Bus method"
1011
1995
self.enable()
1012
1996
1013
1997
# StartChecker - method
1998
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1014
1999
@dbus.service.method(_interface)
1015
2000
def StartChecker(self):
1016
2001
"D-Bus method"
1017
2002
self.start_checker()
1018
2003
1019
2004
# Disable - method
2005
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1020
2006
@dbus.service.method(_interface)
1021
2007
def Disable(self):
1022
2008
"D-Bus method"
1023
2009
self.disable()
1024
2010
1025
2011
# StopChecker - method
2012
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1026
2013
@dbus.service.method(_interface)
1027
2014
def StopChecker(self):
1028
2015
self.stop_checker()
1029
1030
## Properties
1031
2016
2017
# Properties
2018
1032
2019
# ApprovalPending - property
1033
2020
@dbus_service_property(_interface, signature="b", access="read")
1034
2021
def ApprovalPending_dbus_property(self):
1035
2022
return dbus.Boolean(bool(self.approvals_pending))
1036
2023
1037
2024
# ApprovedByDefault - property
1038
@dbus_service_property(_interface, signature="b",
2025
@dbus_service_property(_interface,
2026
signature="b",
1039
2027
access="readwrite")
1040
2028
def ApprovedByDefault_dbus_property(self, value=None):
1041
2029
if value is None: # get
1042
2030
return dbus.Boolean(self.approved_by_default)
1043
2031
self.approved_by_default = bool(value)
1044
2032
1045
2033
# ApprovalDelay - property
1046
@dbus_service_property(_interface, signature="t",
2034
@dbus_service_property(_interface,
2035
signature="t",
1047
2036
access="readwrite")
1048
2037
def ApprovalDelay_dbus_property(self, value=None):
1049
2038
if value is None: # get
1050
return dbus.UInt64(self.approval_delay_milliseconds())
2039
return dbus.UInt64(self.approval_delay.total_seconds()
2040
* 1000)
1051
2041
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1052
2042
1053
2043
# ApprovalDuration - property
1054
@dbus_service_property(_interface, signature="t",
2044
@dbus_service_property(_interface,
2045
signature="t",
1055
2046
access="readwrite")
1056
2047
def ApprovalDuration_dbus_property(self, value=None):
1057
2048
if value is None: # get
1058
return dbus.UInt64(_timedelta_to_milliseconds(
1059
self.approval_duration))
2049
return dbus.UInt64(self.approval_duration.total_seconds()
2050
* 1000)
1060
2051
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1061
2052
1062
2053
# Name - property
2054
@dbus_annotations(
2055
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1063
2056
@dbus_service_property(_interface, signature="s", access="read")
1064
2057
def Name_dbus_property(self):
1065
2058
return dbus.String(self.name)
1066
2059
2060
# KeyID - property
2061
@dbus_annotations(
2062
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2063
@dbus_service_property(_interface, signature="s", access="read")
2064
def KeyID_dbus_property(self):
2065
return dbus.String(self.key_id)
2066
1067
2067
# Fingerprint - property
2068
@dbus_annotations(
2069
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1068
2070
@dbus_service_property(_interface, signature="s", access="read")
1069
2071
def Fingerprint_dbus_property(self):
1070
2072
return dbus.String(self.fingerprint)
1071
2073
1072
2074
# Host - property
1073
@dbus_service_property(_interface, signature="s",
2075
@dbus_service_property(_interface,
2076
signature="s",
1074
2077
access="readwrite")
1075
2078
def Host_dbus_property(self, value=None):
1076
2079
if value is None: # get
1077
2080
return dbus.String(self.host)
1078
self.host = value
1079
2081
self.host = str(value)
2082
1080
2083
# Created - property
2084
@dbus_annotations(
2085
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1081
2086
@dbus_service_property(_interface, signature="s", access="read")
1082
2087
def Created_dbus_property(self):
1083
return dbus.String(datetime_to_dbus(self.created))
1084
2088
return datetime_to_dbus(self.created)
2089
1085
2090
# LastEnabled - property
1086
2091
@dbus_service_property(_interface, signature="s", access="read")
1087
2092
def LastEnabled_dbus_property(self):
1088
2093
return datetime_to_dbus(self.last_enabled)
1089
2094
1090
2095
# Enabled - property
1091
@dbus_service_property(_interface, signature="b",
2096
@dbus_service_property(_interface,
2097
signature="b",
1092
2098
access="readwrite")
1093
2099
def Enabled_dbus_property(self, value=None):
1094
2100
if value is None: # get
1097
2103
self.enable()
1098
2104
else:
1099
2105
self.disable()
1100
2106
1101
2107
# LastCheckedOK - property
1102
@dbus_service_property(_interface, signature="s",
2108
@dbus_service_property(_interface,
2109
signature="s",
1103
2110
access="readwrite")
1104
2111
def LastCheckedOK_dbus_property(self, value=None):
1105
2112
if value is not None:
1106
2113
self.checked_ok()
1107
2114
return
1108
2115
return datetime_to_dbus(self.last_checked_ok)
1109
2116
2117
# LastCheckerStatus - property
2118
@dbus_service_property(_interface, signature="n", access="read")
2119
def LastCheckerStatus_dbus_property(self):
2120
return dbus.Int16(self.last_checker_status)
2121
1110
2122
# Expires - property
1111
2123
@dbus_service_property(_interface, signature="s", access="read")
1112
2124
def Expires_dbus_property(self):
1113
2125
return datetime_to_dbus(self.expires)
1114
2126
1115
2127
# LastApprovalRequest - property
1116
2128
@dbus_service_property(_interface, signature="s", access="read")
1117
2129
def LastApprovalRequest_dbus_property(self):
1118
2130
return datetime_to_dbus(self.last_approval_request)
1119
2131
1120
2132
# Timeout - property
1121
@dbus_service_property(_interface, signature="t",
2133
@dbus_service_property(_interface,
2134
signature="t",
1122
2135
access="readwrite")
1123
2136
def Timeout_dbus_property(self, value=None):
1124
2137
if value is None: # get
1125
return dbus.UInt64(self.timeout_milliseconds())
2138
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2139
old_timeout = self.timeout
1126
2140
self.timeout = datetime.timedelta(0, 0, 0, value)
1127
if getattr(self, "disable_initiator_tag", None) is None:
1128
return
1129
# Reschedule timeout
1130
gobject.source_remove(self.disable_initiator_tag)
1131
self.disable_initiator_tag = None
1132
self.expires = None
1133
time_to_die = (self.
1134
_timedelta_to_milliseconds((self
1135
.last_checked_ok
1136
+ self.timeout)
1137
- datetime.datetime
1138
.utcnow()))
1139
if time_to_die <= 0:
1140
# The timeout has passed
1141
self.disable()
1142
else:
1143
self.expires = (datetime.datetime.utcnow()
1144
+ datetime.timedelta(milliseconds = time_to_die))
1145
self.disable_initiator_tag = (gobject.timeout_add
1146
(time_to_die, self.disable))
1147
2141
# Reschedule disabling
2142
if self.enabled:
2143
now = datetime.datetime.utcnow()
2144
self.expires += self.timeout - old_timeout
2145
if self.expires <= now:
2146
# The timeout has passed
2147
self.disable()
2148
else:
2149
if (getattr(self, "disable_initiator_tag", None)
2150
is None):
2151
return
2152
GLib.source_remove(self.disable_initiator_tag)
2153
self.disable_initiator_tag = GLib.timeout_add(
2154
int((self.expires - now).total_seconds() * 1000),
2155
self.disable)
2156
1148
2157
# ExtendedTimeout - property
1149
@dbus_service_property(_interface, signature="t",
2158
@dbus_service_property(_interface,
2159
signature="t",
1150
2160
access="readwrite")
1151
2161
def ExtendedTimeout_dbus_property(self, value=None):
1152
2162
if value is None: # get
1153
return dbus.UInt64(self.extended_timeout_milliseconds())
2163
return dbus.UInt64(self.extended_timeout.total_seconds()
2164
* 1000)
1154
2165
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1155
2166
1156
2167
# Interval - property
1157
@dbus_service_property(_interface, signature="t",
2168
@dbus_service_property(_interface,
2169
signature="t",
1158
2170
access="readwrite")
1159
2171
def Interval_dbus_property(self, value=None):
1160
2172
if value is None: # get
1161
return dbus.UInt64(self.interval_milliseconds())
2173
return dbus.UInt64(self.interval.total_seconds() * 1000)
1162
2174
self.interval = datetime.timedelta(0, 0, 0, value)
1163
2175
if getattr(self, "checker_initiator_tag", None) is None:
1164
2176
return
1165
# Reschedule checker run
1166
gobject.source_remove(self.checker_initiator_tag)
1167
self.checker_initiator_tag = (gobject.timeout_add
1168
(value, self.start_checker))
1169
self.start_checker() # Start one now, too
1170
2177
if self.enabled:
2178
# Reschedule checker run
2179
GLib.source_remove(self.checker_initiator_tag)
2180
self.checker_initiator_tag = GLib.timeout_add(
2181
value, self.start_checker)
2182
self.start_checker() # Start one now, too
2183
1171
2184
# Checker - property
1172
@dbus_service_property(_interface, signature="s",
2185
@dbus_service_property(_interface,
2186
signature="s",
1173
2187
access="readwrite")
1174
2188
def Checker_dbus_property(self, value=None):
1175
2189
if value is None: # get
1176
2190
return dbus.String(self.checker_command)
1177
self.checker_command = value
1178
2191
self.checker_command = str(value)
2192
1179
2193
# CheckerRunning - property
1180
@dbus_service_property(_interface, signature="b",
2194
@dbus_service_property(_interface,
2195
signature="b",
1181
2196
access="readwrite")
1182
2197
def CheckerRunning_dbus_property(self, value=None):
1183
2198
if value is None: # get
1186
2201
self.start_checker()
1187
2202
else:
1188
2203
self.stop_checker()
1189
2204
1190
2205
# ObjectPath - property
2206
@dbus_annotations(
2207
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2208
"org.freedesktop.DBus.Deprecated": "true"})
1191
2209
@dbus_service_property(_interface, signature="o", access="read")
1192
2210
def ObjectPath_dbus_property(self):
1193
return self.dbus_object_path # is already a dbus.ObjectPath
1194
2211
return self.dbus_object_path # is already a dbus.ObjectPath
2212
1195
2213
# Secret = property
1196
@dbus_service_property(_interface, signature="ay",
1197
access="write", byte_arrays=True)
2214
@dbus_annotations(
2215
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2216
"invalidates"})
2217
@dbus_service_property(_interface,
2218
signature="ay",
2219
access="write",
2220
byte_arrays=True)
1198
2221
def Secret_dbus_property(self, value):
1199
self.secret = str(value)
1200
2222
self.secret = bytes(value)
2223
1201
2224
del _interface
1202
2225
1203
2226
1204
class ProxyClient(object):
1205
def __init__(self, child_pipe, fpr, address):
2227
class ProxyClient:
2228
def __init__(self, child_pipe, key_id, fpr, address):
1206
2229
self._pipe = child_pipe
1207
self._pipe.send(('init', fpr, address))
2230
self._pipe.send(('init', key_id, fpr, address))
1208
2231
if not self._pipe.recv():
1209
raise KeyError()
1210
2232
raise KeyError(key_id or fpr)
2233
1211
2234
def __getattribute__(self, name):
1212
if(name == '_pipe'):
2235
if name == '_pipe':
1213
2236
return super(ProxyClient, self).__getattribute__(name)
1214
2237
self._pipe.send(('getattr', name))
1215
2238
data = self._pipe.recv()
1216
2239
if data[0] == 'data':
1217
2240
return data[1]
1218
2241
if data[0] == 'function':
2242
1219
2243
def func(*args, **kwargs):
1220
2244
self._pipe.send(('funcall', name, args, kwargs))
1221
2245
return self._pipe.recv()[1]
2246
1222
2247
return func
1223
2248
1224
2249
def __setattr__(self, name, value):
1225
if(name == '_pipe'):
2250
if name == '_pipe':
1226
2251
return super(ProxyClient, self).__setattr__(name, value)
1227
2252
self._pipe.send(('setattr', name, value))
1228
2253
1229
class ClientDBusTransitional(ClientDBus):
1230
__metaclass__ = transitional_dbus_metaclass
1231
2254
1232
2255
class ClientHandler(socketserver.BaseRequestHandler, object):
1233
2256
"""A class to handle client connections.
1234
2257
1235
2258
Instantiated once for each connection to handle it.
1236
2259
Note: This will run in its own forked process."""
1237
2260
1238
2261
def handle(self):
1239
2262
with contextlib.closing(self.server.child_pipe) as child_pipe:
1240
2263
logger.info("TCP connection from: %s",
1241
unicode(self.client_address))
2264
str(self.client_address))
1242
2265
logger.debug("Pipe FD: %d",
1243
2266
self.server.child_pipe.fileno())
1244
1245
session = (gnutls.connection
1246
.ClientSession(self.request,
1247
gnutls.connection
1248
.X509Credentials()))
1249
1250
# Note: gnutls.connection.X509Credentials is really a
1251
# generic GnuTLS certificate credentials object so long as
1252
# no X.509 keys are added to it. Therefore, we can use it
1253
# here despite using OpenPGP certificates.
1254
1255
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1256
# "+AES-256-CBC", "+SHA1",
1257
# "+COMP-NULL", "+CTYPE-OPENPGP",
1258
# "+DHE-DSS"))
2267
2268
session = gnutls.ClientSession(self.request)
2269
2270
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2271
# "+AES-256-CBC", "+SHA1",
2272
# "+COMP-NULL", "+CTYPE-OPENPGP",
2273
# "+DHE-DSS"))
1259
2274
# Use a fallback default, since this MUST be set.
1260
2275
priority = self.server.gnutls_priority
1261
2276
if priority is None:
1262
2277
priority = "NORMAL"
1263
(gnutls.library.functions
1264
.gnutls_priority_set_direct(session._c_object,
1265
priority, None))
1266
2278
gnutls.priority_set_direct(session._c_object,
2279
priority.encode("utf-8"),
2280
None)
2281
1267
2282
# Start communication using the Mandos protocol
1268
2283
# Get protocol number
1269
2284
line = self.request.makefile().readline()
1270
2285
logger.debug("Protocol version: %r", line)
1271
2286
try:
1272
2287
if int(line.strip().split()[0]) > 1:
1273
raise RuntimeError
2288
raise RuntimeError(line)
1274
2289
except (ValueError, IndexError, RuntimeError) as error:
1275
2290
logger.error("Unknown protocol version: %s", error)
1276
2291
return
1277
2292
1278
2293
# Start GnuTLS connection
1279
2294
try:
1280
2295
session.handshake()
1281
except gnutls.errors.GNUTLSError as error:
2296
except gnutls.Error as error:
1282
2297
logger.warning("Handshake failed: %s", error)
1283
2298
# Do not run session.bye() here: the session is not
1284
2299
# established. Just abandon the request.
1285
2300
return
1286
2301
logger.debug("Handshake succeeded")
1287
2302
1288
2303
approval_required = False
1289
2304
try:
1290
try:
1291
fpr = self.fingerprint(self.peer_certificate
1292
(session))
1293
except (TypeError,
1294
gnutls.errors.GNUTLSError) as error:
1295
logger.warning("Bad certificate: %s", error)
1296
return
1297
logger.debug("Fingerprint: %s", fpr)
1298
1299
try:
1300
client = ProxyClient(child_pipe, fpr,
2305
if gnutls.has_rawpk:
2306
fpr = b""
2307
try:
2308
key_id = self.key_id(
2309
self.peer_certificate(session))
2310
except (TypeError, gnutls.Error) as error:
2311
logger.warning("Bad certificate: %s", error)
2312
return
2313
logger.debug("Key ID: %s", key_id)
2314
2315
else:
2316
key_id = b""
2317
try:
2318
fpr = self.fingerprint(
2319
self.peer_certificate(session))
2320
except (TypeError, gnutls.Error) as error:
2321
logger.warning("Bad certificate: %s", error)
2322
return
2323
logger.debug("Fingerprint: %s", fpr)
2324
2325
try:
2326
client = ProxyClient(child_pipe, key_id, fpr,
1301
2327
self.client_address)
1302
2328
except KeyError:
1303
2329
return
1304
2330
1305
2331
if client.approval_delay:
1306
2332
delay = client.approval_delay
1307
2333
client.approvals_pending += 1
1308
2334
approval_required = True
1309
2335
1310
2336
while True:
1311
2337
if not client.enabled:
1312
2338
logger.info("Client %s is disabled",
1313
client.name)
2339
client.name)
1314
2340
if self.server.use_dbus:
1315
2341
# Emit D-Bus signal
1316
client.Rejected("Disabled")
2342
client.Rejected("Disabled")
1317
2343
return
1318
1319
if client._approved or not client.approval_delay:
1320
#We are approved or approval is disabled
2344
2345
if client.approved or not client.approval_delay:
2346
# We are approved or approval is disabled
1321
2347
break
1322
elif client._approved is None:
2348
elif client.approved is None:
1323
2349
logger.info("Client %s needs approval",
1324
2350
client.name)
1325
2351
if self.server.use_dbus:
1326
2352
# Emit D-Bus signal
1327
2353
client.NeedApproval(
1328
client.approval_delay_milliseconds(),
1329
client.approved_by_default)
2354
client.approval_delay.total_seconds()
2355
* 1000, client.approved_by_default)
1330
2356
else:
1331
2357
logger.warning("Client %s was not approved",
1332
2358
client.name)
1334
2360
# Emit D-Bus signal
1335
2361
client.Rejected("Denied")
1336
2362
return
1337
1338
#wait until timeout or approved
1339
#x = float(client._timedelta_to_milliseconds(delay))
2363
2364
# wait until timeout or approved
1340
2365
time = datetime.datetime.now()
1341
2366
client.changedstate.acquire()
1342
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2367
client.changedstate.wait(delay.total_seconds())
1343
2368
client.changedstate.release()
1344
2369
time2 = datetime.datetime.now()
1345
2370
if (time2 - time) >= delay:
1355
2380
break
1356
2381
else:
1357
2382
delay -= time2 - time
1358
1359
sent_size = 0
1360
while sent_size < len(client.secret):
1361
try:
1362
sent = session.send(client.secret[sent_size:])
1363
except gnutls.errors.GNUTLSError as error:
1364
logger.warning("gnutls send failed")
1365
return
1366
logger.debug("Sent: %d, remaining: %d",
1367
sent, len(client.secret)
1368
- (sent_size + sent))
1369
sent_size += sent
1370
2383
2384
try:
2385
session.send(client.secret)
2386
except gnutls.Error as error:
2387
logger.warning("gnutls send failed",
2388
exc_info=error)
2389
return
2390
1371
2391
logger.info("Sending secret to %s", client.name)
1372
# bump the timeout as if seen
1373
client.checked_ok(client.extended_timeout)
2392
# bump the timeout using extended_timeout
2393
client.bump_timeout(client.extended_timeout)
1374
2394
if self.server.use_dbus:
1375
2395
# Emit D-Bus signal
1376
2396
client.GotSecret()
1377
2397
1378
2398
finally:
1379
2399
if approval_required:
1380
2400
client.approvals_pending -= 1
1381
2401
try:
1382
2402
session.bye()
1383
except gnutls.errors.GNUTLSError as error:
1384
logger.warning("GnuTLS bye failed")
1385
2403
except gnutls.Error as error:
2404
logger.warning("GnuTLS bye failed",
2405
exc_info=error)
2406
1386
2407
@staticmethod
1387
2408
def peer_certificate(session):
1388
"Return the peer's OpenPGP certificate as a bytestring"
1389
# If not an OpenPGP certificate...
1390
if (gnutls.library.functions
1391
.gnutls_certificate_type_get(session._c_object)
1392
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1393
# ...do the normal thing
1394
return session.peer_certificate
2409
"Return the peer's certificate as a bytestring"
2410
try:
2411
cert_type = gnutls.certificate_type_get2(session._c_object,
2412
gnutls.CTYPE_PEERS)
2413
except AttributeError:
2414
cert_type = gnutls.certificate_type_get(session._c_object)
2415
if gnutls.has_rawpk:
2416
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2417
else:
2418
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2419
# If not a valid certificate type...
2420
if cert_type not in valid_cert_types:
2421
logger.info("Cert type %r not in %r", cert_type,
2422
valid_cert_types)
2423
# ...return invalid data
2424
return b""
1395
2425
list_size = ctypes.c_uint(1)
1396
cert_list = (gnutls.library.functions
1397
.gnutls_certificate_get_peers
2426
cert_list = (gnutls.certificate_get_peers
1398
2427
(session._c_object, ctypes.byref(list_size)))
1399
2428
if not bool(cert_list) and list_size.value != 0:
1400
raise gnutls.errors.GNUTLSError("error getting peer"
1401
" certificate")
2429
raise gnutls.Error("error getting peer certificate")
1402
2430
if list_size.value == 0:
1403
2431
return None
1404
2432
cert = cert_list[0]
1405
2433
return ctypes.string_at(cert.data, cert.size)
1406
2434
2435
@staticmethod
2436
def key_id(certificate):
2437
"Convert a certificate bytestring to a hexdigit key ID"
2438
# New GnuTLS "datum" with the public key
2439
datum = gnutls.datum_t(
2440
ctypes.cast(ctypes.c_char_p(certificate),
2441
ctypes.POINTER(ctypes.c_ubyte)),
2442
ctypes.c_uint(len(certificate)))
2443
# XXX all these need to be created in the gnutls "module"
2444
# New empty GnuTLS certificate
2445
pubkey = gnutls.pubkey_t()
2446
gnutls.pubkey_init(ctypes.byref(pubkey))
2447
# Import the raw public key into the certificate
2448
gnutls.pubkey_import(pubkey,
2449
ctypes.byref(datum),
2450
gnutls.X509_FMT_DER)
2451
# New buffer for the key ID
2452
buf = ctypes.create_string_buffer(32)
2453
buf_len = ctypes.c_size_t(len(buf))
2454
# Get the key ID from the raw public key into the buffer
2455
gnutls.pubkey_get_key_id(pubkey,
2456
gnutls.KEYID_USE_SHA256,
2457
ctypes.cast(ctypes.byref(buf),
2458
ctypes.POINTER(ctypes.c_ubyte)),
2459
ctypes.byref(buf_len))
2460
# Deinit the certificate
2461
gnutls.pubkey_deinit(pubkey)
2462
2463
# Convert the buffer to a Python bytestring
2464
key_id = ctypes.string_at(buf, buf_len.value)
2465
# Convert the bytestring to hexadecimal notation
2466
hex_key_id = binascii.hexlify(key_id).upper()
2467
return hex_key_id
2468
1407
2469
@staticmethod
1408
2470
def fingerprint(openpgp):
1409
2471
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1410
2472
# New GnuTLS "datum" with the OpenPGP public key
1411
datum = (gnutls.library.types
1412
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1413
ctypes.POINTER
1414
(ctypes.c_ubyte)),
1415
ctypes.c_uint(len(openpgp))))
2473
datum = gnutls.datum_t(
2474
ctypes.cast(ctypes.c_char_p(openpgp),
2475
ctypes.POINTER(ctypes.c_ubyte)),
2476
ctypes.c_uint(len(openpgp)))
1416
2477
# New empty GnuTLS certificate
1417
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1418
(gnutls.library.functions
1419
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2478
crt = gnutls.openpgp_crt_t()
2479
gnutls.openpgp_crt_init(ctypes.byref(crt))
1420
2480
# Import the OpenPGP public key into the certificate
1421
(gnutls.library.functions
1422
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1423
gnutls.library.constants
1424
.GNUTLS_OPENPGP_FMT_RAW))
2481
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2482
gnutls.OPENPGP_FMT_RAW)
1425
2483
# Verify the self signature in the key
1426
2484
crtverify = ctypes.c_uint()
1427
(gnutls.library.functions
1428
.gnutls_openpgp_crt_verify_self(crt, 0,
1429
ctypes.byref(crtverify)))
2485
gnutls.openpgp_crt_verify_self(crt, 0,
2486
ctypes.byref(crtverify))
1430
2487
if crtverify.value != 0:
1431
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1432
raise (gnutls.errors.CertificateSecurityError
1433
("Verify failed"))
2488
gnutls.openpgp_crt_deinit(crt)
2489
raise gnutls.CertificateSecurityError(code
2490
=crtverify.value)
1434
2491
# New buffer for the fingerprint
1435
2492
buf = ctypes.create_string_buffer(20)
1436
2493
buf_len = ctypes.c_size_t()
1437
2494
# Get the fingerprint from the certificate into the buffer
1438
(gnutls.library.functions
1439
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1440
ctypes.byref(buf_len)))
2495
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2496
ctypes.byref(buf_len))
1441
2497
# Deinit the certificate
1442
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2498
gnutls.openpgp_crt_deinit(crt)
1443
2499
# Convert the buffer to a Python bytestring
1444
2500
fpr = ctypes.string_at(buf, buf_len.value)
1445
2501
# Convert the bytestring to hexadecimal notation
1446
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2502
hex_fpr = binascii.hexlify(fpr).upper()
1447
2503
return hex_fpr
1448
2504
1449
2505
1450
class MultiprocessingMixIn(object):
2506
class MultiprocessingMixIn:
1451
2507
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2508
1452
2509
def sub_process_main(self, request, address):
1453
2510
try:
1454
2511
self.finish_request(request, address)
1455
except:
2512
except Exception:
1456
2513
self.handle_error(request, address)
1457
2514
self.close_request(request)
1458
2515
1459
2516
def process_request(self, request, address):
1460
2517
"""Start a new process to process the request."""
1461
multiprocessing.Process(target = self.sub_process_main,
1462
args = (request, address)).start()
1463
1464
1465
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2518
proc = multiprocessing.Process(target=self.sub_process_main,
2519
args=(request, address))
2520
proc.start()
2521
return proc
2522
2523
2524
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1466
2525
""" adds a pipe to the MixIn """
2526
1467
2527
def process_request(self, request, client_address):
1468
2528
"""Overrides and wraps the original process_request().
1469
2529
1470
2530
This function creates a new pipe in self.pipe
1471
2531
"""
1472
2532
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1473
1474
super(MultiprocessingMixInWithPipe,
1475
self).process_request(request, client_address)
2533
2534
proc = MultiprocessingMixIn.process_request(self, request,
2535
client_address)
1476
2536
self.child_pipe.close()
1477
self.add_pipe(parent_pipe)
1478
1479
def add_pipe(self, parent_pipe):
2537
self.add_pipe(parent_pipe, proc)
2538
2539
def add_pipe(self, parent_pipe, proc):
1480
2540
"""Dummy function; override as necessary"""
1481
raise NotImplementedError
2541
raise NotImplementedError()
1482
2542
1483
2543
1484
2544
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1485
socketserver.TCPServer, object):
2545
socketserver.TCPServer):
1486
2546
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1487
2547
1488
2548
Attributes:
1489
2549
enabled: Boolean; whether this server is activated yet
1490
2550
interface: None or a network interface name (string)
1491
2551
use_ipv6: Boolean; to use IPv6 or not
1492
2552
"""
2553
1493
2554
def __init__(self, server_address, RequestHandlerClass,
1494
interface=None, use_ipv6=True):
2555
interface=None,
2556
use_ipv6=True,
2557
socketfd=None):
2558
"""If socketfd is set, use that file descriptor instead of
2559
creating a new one with socket.socket().
2560
"""
1495
2561
self.interface = interface
1496
2562
if use_ipv6:
1497
2563
self.address_family = socket.AF_INET6
2564
if socketfd is not None:
2565
# Save the file descriptor
2566
self.socketfd = socketfd
2567
# Save the original socket.socket() function
2568
self.socket_socket = socket.socket
2569
2570
# To implement --socket, we monkey patch socket.socket.
2571
#
2572
# (When socketserver.TCPServer is a new-style class, we
2573
# could make self.socket into a property instead of monkey
2574
# patching socket.socket.)
2575
#
2576
# Create a one-time-only replacement for socket.socket()
2577
@functools.wraps(socket.socket)
2578
def socket_wrapper(*args, **kwargs):
2579
# Restore original function so subsequent calls are
2580
# not affected.
2581
socket.socket = self.socket_socket
2582
del self.socket_socket
2583
# This time only, return a new socket object from the
2584
# saved file descriptor.
2585
return socket.fromfd(self.socketfd, *args, **kwargs)
2586
# Replace socket.socket() function with wrapper
2587
socket.socket = socket_wrapper
2588
# The socketserver.TCPServer.__init__ will call
2589
# socket.socket(), which might be our replacement,
2590
# socket_wrapper(), if socketfd was set.
1498
2591
socketserver.TCPServer.__init__(self, server_address,
1499
2592
RequestHandlerClass)
2593
1500
2594
def server_bind(self):
1501
2595
"""This overrides the normal server_bind() function
1502
2596
to bind to an interface if one was specified, and also NOT to
1503
2597
bind to an address or port if they were not specified."""
2598
global SO_BINDTODEVICE
1504
2599
if self.interface is not None:
1505
2600
if SO_BINDTODEVICE is None:
1506
logger.error("SO_BINDTODEVICE does not exist;"
1507
" cannot bind to interface %s",
1508
self.interface)
1509
else:
1510
try:
1511
self.socket.setsockopt(socket.SOL_SOCKET,
1512
SO_BINDTODEVICE,
1513
str(self.interface
1514
+ '\0'))
1515
except socket.error as error:
1516
if error[0] == errno.EPERM:
1517
logger.error("No permission to"
1518
" bind to interface %s",
1519
self.interface)
1520
elif error[0] == errno.ENOPROTOOPT:
1521
logger.error("SO_BINDTODEVICE not available;"
1522
" cannot bind to interface %s",
1523
self.interface)
1524
else:
1525
raise
2601
# Fall back to a hard-coded value which seems to be
2602
# common enough.
2603
logger.warning("SO_BINDTODEVICE not found, trying 25")
2604
SO_BINDTODEVICE = 25
2605
try:
2606
self.socket.setsockopt(
2607
socket.SOL_SOCKET, SO_BINDTODEVICE,
2608
(self.interface + "\0").encode("utf-8"))
2609
except socket.error as error:
2610
if error.errno == errno.EPERM:
2611
logger.error("No permission to bind to"
2612
" interface %s", self.interface)
2613
elif error.errno == errno.ENOPROTOOPT:
2614
logger.error("SO_BINDTODEVICE not available;"
2615
" cannot bind to interface %s",
2616
self.interface)
2617
elif error.errno == errno.ENODEV:
2618
logger.error("Interface %s does not exist,"
2619
" cannot bind", self.interface)
2620
else:
2621
raise
1526
2622
# Only bind(2) the socket if we really need to.
1527
2623
if self.server_address[0] or self.server_address[1]:
2624
if self.server_address[1]:
2625
self.allow_reuse_address = True
1528
2626
if not self.server_address[0]:
1529
2627
if self.address_family == socket.AF_INET6:
1530
any_address = "::" # in6addr_any
2628
any_address = "::" # in6addr_any
1531
2629
else:
1532
any_address = socket.INADDR_ANY
2630
any_address = "0.0.0.0" # INADDR_ANY
1533
2631
self.server_address = (any_address,
1534
2632
self.server_address[1])
1535
2633
elif not self.server_address[1]:
1536
self.server_address = (self.server_address[0],
1537
0)
2634
self.server_address = (self.server_address[0], 0)
1538
2635
# if self.interface:
1539
2636
# self.server_address = (self.server_address[0],
1540
2637
# 0, # port
1546
2643
1547
2644
class MandosServer(IPv6_TCPServer):
1548
2645
"""Mandos server.
1549
2646
1550
2647
Attributes:
1551
2648
clients: set of Client objects
1552
2649
gnutls_priority GnuTLS priority string
1553
2650
use_dbus: Boolean; to emit D-Bus signals or not
1554
1555
Assumes a gobject.MainLoop event loop.
2651
2652
Assumes a GLib.MainLoop event loop.
1556
2653
"""
2654
1557
2655
def __init__(self, server_address, RequestHandlerClass,
1558
interface=None, use_ipv6=True, clients=None,
1559
gnutls_priority=None, use_dbus=True):
2656
interface=None,
2657
use_ipv6=True,
2658
clients=None,
2659
gnutls_priority=None,
2660
use_dbus=True,
2661
socketfd=None):
1560
2662
self.enabled = False
1561
2663
self.clients = clients
1562
2664
if self.clients is None:
1563
self.clients = set()
2665
self.clients = {}
1564
2666
self.use_dbus = use_dbus
1565
2667
self.gnutls_priority = gnutls_priority
1566
2668
IPv6_TCPServer.__init__(self, server_address,
1567
2669
RequestHandlerClass,
1568
interface = interface,
1569
use_ipv6 = use_ipv6)
2670
interface=interface,
2671
use_ipv6=use_ipv6,
2672
socketfd=socketfd)
2673
1570
2674
def server_activate(self):
1571
2675
if self.enabled:
1572
2676
return socketserver.TCPServer.server_activate(self)
2677
1573
2678
def enable(self):
1574
2679
self.enabled = True
1575
def add_pipe(self, parent_pipe):
2680
2681
def add_pipe(self, parent_pipe, proc):
1576
2682
# Call "handle_ipc" for both data and EOF events
1577
gobject.io_add_watch(parent_pipe.fileno(),
1578
gobject.IO_IN | gobject.IO_HUP,
1579
functools.partial(self.handle_ipc,
1580
parent_pipe = parent_pipe))
1581
1582
def handle_ipc(self, source, condition, parent_pipe=None,
2683
GLib.io_add_watch(
2684
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2685
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2686
functools.partial(self.handle_ipc,
2687
parent_pipe=parent_pipe,
2688
proc=proc))
2689
2690
def handle_ipc(self, source, condition,
2691
parent_pipe=None,
2692
proc=None,
1583
2693
client_object=None):
1584
condition_names = {
1585
gobject.IO_IN: "IN", # There is data to read.
1586
gobject.IO_OUT: "OUT", # Data can be written (without
1587
# blocking).
1588
gobject.IO_PRI: "PRI", # There is urgent data to read.
1589
gobject.IO_ERR: "ERR", # Error condition.
1590
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1591
# broken, usually for pipes and
1592
# sockets).
1593
}
1594
conditions_string = ' | '.join(name
1595
for cond, name in
1596
condition_names.iteritems()
1597
if cond & condition)
1598
# error or the other end of multiprocessing.Pipe has closed
1599
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2694
# error, or the other end of multiprocessing.Pipe has closed
2695
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2696
# Wait for other process to exit
2697
proc.join()
1600
2698
return False
1601
2699
1602
2700
# Read a request from the child
1603
2701
request = parent_pipe.recv()
1604
2702
command = request[0]
1605
2703
1606
2704
if command == 'init':
1607
fpr = request[1]
1608
address = request[2]
1609
1610
for c in self.clients:
1611
if c.fingerprint == fpr:
2705
key_id = request[1].decode("ascii")
2706
fpr = request[2].decode("ascii")
2707
address = request[3]
2708
2709
for c in self.clients.values():
2710
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2711
continue
2712
if key_id and c.key_id == key_id:
2713
client = c
2714
break
2715
if fpr and c.fingerprint == fpr:
1612
2716
client = c
1613
2717
break
1614
2718
else:
1615
logger.info("Client not found for fingerprint: %s, ad"
1616
"dress: %s", fpr, address)
2719
logger.info("Client not found for key ID: %s, address"
2720
": %s", key_id or fpr, address)
1617
2721
if self.use_dbus:
1618
2722
# Emit D-Bus signal
1619
mandos_dbus_service.ClientNotFound(fpr, address[0])
2723
mandos_dbus_service.ClientNotFound(key_id or fpr,
2724
address[0])
1620
2725
parent_pipe.send(False)
1621
2726
return False
1622
1623
gobject.io_add_watch(parent_pipe.fileno(),
1624
gobject.IO_IN | gobject.IO_HUP,
1625
functools.partial(self.handle_ipc,
1626
parent_pipe = parent_pipe,
1627
client_object = client))
2727
2728
GLib.io_add_watch(
2729
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2730
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2731
functools.partial(self.handle_ipc,
2732
parent_pipe=parent_pipe,
2733
proc=proc,
2734
client_object=client))
1628
2735
parent_pipe.send(True)
1629
# remove the old hook in favor of the new above hook on same fileno
2736
# remove the old hook in favor of the new above hook on
2737
# same fileno
1630
2738
return False
1631
2739
if command == 'funcall':
1632
2740
funcname = request[1]
1633
2741
args = request[2]
1634
2742
kwargs = request[3]
1635
1636
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1637
2743
2744
parent_pipe.send(('data', getattr(client_object,
2745
funcname)(*args,
2746
**kwargs)))
2747
1638
2748
if command == 'getattr':
1639
2749
attrname = request[1]
1640
if callable(client_object.__getattribute__(attrname)):
1641
parent_pipe.send(('function',))
2750
if isinstance(client_object.__getattribute__(attrname),
2751
collections.Callable):
2752
parent_pipe.send(('function', ))
1642
2753
else:
1643
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1644
2754
parent_pipe.send((
2755
'data', client_object.__getattribute__(attrname)))
2756
1645
2757
if command == 'setattr':
1646
2758
attrname = request[1]
1647
2759
value = request[2]
1648
2760
setattr(client_object, attrname, value)
1649
2761
1650
2762
return True
1651
2763
1652
2764
2765
def rfc3339_duration_to_delta(duration):
2766
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2767
2768
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2769
True
2770
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2771
True
2772
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2773
True
2774
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2775
True
2776
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2777
True
2778
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2779
True
2780
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2781
True
2782
"""
2783
2784
# Parsing an RFC 3339 duration with regular expressions is not
2785
# possible - there would have to be multiple places for the same
2786
# values, like seconds. The current code, while more esoteric, is
2787
# cleaner without depending on a parsing library. If Python had a
2788
# built-in library for parsing we would use it, but we'd like to
2789
# avoid excessive use of external libraries.
2790
2791
# New type for defining tokens, syntax, and semantics all-in-one
2792
Token = collections.namedtuple("Token", (
2793
"regexp", # To match token; if "value" is not None, must have
2794
# a "group" containing digits
2795
"value", # datetime.timedelta or None
2796
"followers")) # Tokens valid after this token
2797
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2798
# the "duration" ABNF definition in RFC 3339, Appendix A.
2799
token_end = Token(re.compile(r"$"), None, frozenset())
2800
token_second = Token(re.compile(r"(\d+)S"),
2801
datetime.timedelta(seconds=1),
2802
frozenset((token_end, )))
2803
token_minute = Token(re.compile(r"(\d+)M"),
2804
datetime.timedelta(minutes=1),
2805
frozenset((token_second, token_end)))
2806
token_hour = Token(re.compile(r"(\d+)H"),
2807
datetime.timedelta(hours=1),
2808
frozenset((token_minute, token_end)))
2809
token_time = Token(re.compile(r"T"),
2810
None,
2811
frozenset((token_hour, token_minute,
2812
token_second)))
2813
token_day = Token(re.compile(r"(\d+)D"),
2814
datetime.timedelta(days=1),
2815
frozenset((token_time, token_end)))
2816
token_month = Token(re.compile(r"(\d+)M"),
2817
datetime.timedelta(weeks=4),
2818
frozenset((token_day, token_end)))
2819
token_year = Token(re.compile(r"(\d+)Y"),
2820
datetime.timedelta(weeks=52),
2821
frozenset((token_month, token_end)))
2822
token_week = Token(re.compile(r"(\d+)W"),
2823
datetime.timedelta(weeks=1),
2824
frozenset((token_end, )))
2825
token_duration = Token(re.compile(r"P"), None,
2826
frozenset((token_year, token_month,
2827
token_day, token_time,
2828
token_week)))
2829
# Define starting values:
2830
# Value so far
2831
value = datetime.timedelta()
2832
found_token = None
2833
# Following valid tokens
2834
followers = frozenset((token_duration, ))
2835
# String left to parse
2836
s = duration
2837
# Loop until end token is found
2838
while found_token is not token_end:
2839
# Search for any currently valid tokens
2840
for token in followers:
2841
match = token.regexp.match(s)
2842
if match is not None:
2843
# Token found
2844
if token.value is not None:
2845
# Value found, parse digits
2846
factor = int(match.group(1), 10)
2847
# Add to value so far
2848
value += factor * token.value
2849
# Strip token from string
2850
s = token.regexp.sub("", s, 1)
2851
# Go to found token
2852
found_token = token
2853
# Set valid next tokens
2854
followers = found_token.followers
2855
break
2856
else:
2857
# No currently valid tokens were found
2858
raise ValueError("Invalid RFC 3339 duration: {!r}"
2859
.format(duration))
2860
# End token found
2861
return value
2862
2863
1653
2864
def string_to_delta(interval):
1654
2865
"""Parse a string and return a datetime.timedelta
1655
1656
>>> string_to_delta('7d')
1657
datetime.timedelta(7)
1658
>>> string_to_delta('60s')
1659
datetime.timedelta(0, 60)
1660
>>> string_to_delta('60m')
1661
datetime.timedelta(0, 3600)
1662
>>> string_to_delta('24h')
1663
datetime.timedelta(1)
1664
>>> string_to_delta('1w')
1665
datetime.timedelta(7)
1666
>>> string_to_delta('5m 30s')
1667
datetime.timedelta(0, 330)
2866
2867
>>> string_to_delta('7d') == datetime.timedelta(7)
2868
True
2869
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2870
True
2871
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2872
True
2873
>>> string_to_delta('24h') == datetime.timedelta(1)
2874
True
2875
>>> string_to_delta('1w') == datetime.timedelta(7)
2876
True
2877
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2878
True
1668
2879
"""
2880
2881
try:
2882
return rfc3339_duration_to_delta(interval)
2883
except ValueError:
2884
pass
2885
1669
2886
timevalue = datetime.timedelta(0)
1670
2887
for s in interval.split():
1671
2888
try:
1672
suffix = unicode(s[-1])
2889
suffix = s[-1]
1673
2890
value = int(s[:-1])
1674
2891
if suffix == "d":
1675
2892
delta = datetime.timedelta(value)
1682
2899
elif suffix == "w":
1683
2900
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1684
2901
else:
1685
raise ValueError("Unknown suffix %r" % suffix)
1686
except (ValueError, IndexError) as e:
2902
raise ValueError("Unknown suffix {!r}".format(suffix))
2903
except IndexError as e:
1687
2904
raise ValueError(*(e.args))
1688
2905
timevalue += delta
1689
2906
return timevalue
1690
2907
1691
2908
1692
def if_nametoindex(interface):
1693
"""Call the C function if_nametoindex(), or equivalent
1694
1695
Note: This function cannot accept a unicode string."""
1696
global if_nametoindex
1697
try:
1698
if_nametoindex = (ctypes.cdll.LoadLibrary
1699
(ctypes.util.find_library("c"))
1700
.if_nametoindex)
1701
except (OSError, AttributeError):
1702
logger.warning("Doing if_nametoindex the hard way")
1703
def if_nametoindex(interface):
1704
"Get an interface index the hard way, i.e. using fcntl()"
1705
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1706
with contextlib.closing(socket.socket()) as s:
1707
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1708
struct.pack(str("16s16x"),
1709
interface))
1710
interface_index = struct.unpack(str("I"),
1711
ifreq[16:20])[0]
1712
return interface_index
1713
return if_nametoindex(interface)
1714
1715
1716
def daemon(nochdir = False, noclose = False):
2909
def daemon(nochdir=False, noclose=False):
1717
2910
"""See daemon(3). Standard BSD Unix function.
1718
2911
1719
2912
This should really exist as os.daemon, but it doesn't (yet)."""
1720
2913
if os.fork():
1721
2914
sys.exit()
1726
2919
sys.exit()
1727
2920
if not noclose:
1728
2921
# Close all standard open file descriptors
1729
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2922
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1730
2923
if not stat.S_ISCHR(os.fstat(null).st_mode):
1731
2924
raise OSError(errno.ENODEV,
1732
"%s not a character device"
1733
% os.path.devnull)
2925
"{} not a character device"
2926
.format(os.devnull))
1734
2927
os.dup2(null, sys.stdin.fileno())
1735
2928
os.dup2(null, sys.stdout.fileno())
1736
2929
os.dup2(null, sys.stderr.fileno())
1739
2932
1740
2933
1741
2934
def main():
1742
2935
1743
2936
##################################################################
1744
2937
# Parsing of options, both command line and config file
1745
2938
1746
2939
parser = argparse.ArgumentParser()
1747
2940
parser.add_argument("-v", "--version", action="version",
1748
version = "%%(prog)s %s" % version,
2941
version="%(prog)s {}".format(version),
1749
2942
help="show version number and exit")
1750
2943
parser.add_argument("-i", "--interface", metavar="IF",
1751
2944
help="Bind to interface IF")
1757
2950
help="Run self-test")
1758
2951
parser.add_argument("--debug", action="store_true",
1759
2952
help="Debug mode; run in foreground and log"
1760
" to terminal")
2953
" to terminal", default=None)
1761
2954
parser.add_argument("--debuglevel", metavar="LEVEL",
1762
2955
help="Debug level for stdout output")
1763
2956
parser.add_argument("--priority", help="GnuTLS"
1770
2963
" files")
1771
2964
parser.add_argument("--no-dbus", action="store_false",
1772
2965
dest="use_dbus", help="Do not provide D-Bus"
1773
" system bus interface")
2966
" system bus interface", default=None)
1774
2967
parser.add_argument("--no-ipv6", action="store_false",
1775
dest="use_ipv6", help="Do not use IPv6")
2968
dest="use_ipv6", help="Do not use IPv6",
2969
default=None)
2970
parser.add_argument("--no-restore", action="store_false",
2971
dest="restore", help="Do not restore stored"
2972
" state", default=None)
2973
parser.add_argument("--socket", type=int,
2974
help="Specify a file descriptor to a network"
2975
" socket to use instead of creating one")
2976
parser.add_argument("--statedir", metavar="DIR",
2977
help="Directory to save/restore state in")
2978
parser.add_argument("--foreground", action="store_true",
2979
help="Run in foreground", default=None)
2980
parser.add_argument("--no-zeroconf", action="store_false",
2981
dest="zeroconf", help="Do not use Zeroconf",
2982
default=None)
2983
1776
2984
options = parser.parse_args()
1777
1778
if options.check:
1779
import doctest
1780
doctest.testmod()
1781
sys.exit()
1782
2985
1783
2986
# Default values for config file for server-global settings
1784
server_defaults = { "interface": "",
1785
"address": "",
1786
"port": "",
1787
"debug": "False",
1788
"priority":
1789
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1790
"servicename": "Mandos",
1791
"use_dbus": "True",
1792
"use_ipv6": "True",
1793
"debuglevel": "",
1794
}
1795
2987
if gnutls.has_rawpk:
2988
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2989
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2990
else:
2991
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2992
":+SIGN-DSA-SHA256")
2993
server_defaults = {"interface": "",
2994
"address": "",
2995
"port": "",
2996
"debug": "False",
2997
"priority": priority,
2998
"servicename": "Mandos",
2999
"use_dbus": "True",
3000
"use_ipv6": "True",
3001
"debuglevel": "",
3002
"restore": "True",
3003
"socket": "",
3004
"statedir": "/var/lib/mandos",
3005
"foreground": "False",
3006
"zeroconf": "True",
3007
}
3008
del priority
3009
1796
3010
# Parse config file for server-global settings
1797
server_config = configparser.SafeConfigParser(server_defaults)
3011
server_config = configparser.ConfigParser(server_defaults)
1798
3012
del server_defaults
1799
server_config.read(os.path.join(options.configdir,
1800
"mandos.conf"))
1801
# Convert the SafeConfigParser object to a dict
3013
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3014
# Convert the ConfigParser object to a dict
1802
3015
server_settings = server_config.defaults()
1803
3016
# Use the appropriate methods on the non-string config options
1804
for option in ("debug", "use_dbus", "use_ipv6"):
3017
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3018
"foreground", "zeroconf"):
1805
3019
server_settings[option] = server_config.getboolean("DEFAULT",
1806
3020
option)
1807
3021
if server_settings["port"]:
1808
3022
server_settings["port"] = server_config.getint("DEFAULT",
1809
3023
"port")
3024
if server_settings["socket"]:
3025
server_settings["socket"] = server_config.getint("DEFAULT",
3026
"socket")
3027
# Later, stdin will, and stdout and stderr might, be dup'ed
3028
# over with an opened os.devnull. But we don't want this to
3029
# happen with a supplied network socket.
3030
if 0 <= server_settings["socket"] <= 2:
3031
server_settings["socket"] = os.dup(server_settings
3032
["socket"])
1810
3033
del server_config
1811
3034
1812
3035
# Override the settings from the config file with command line
1813
3036
# options, if set.
1814
3037
for option in ("interface", "address", "port", "debug",
1815
"priority", "servicename", "configdir",
1816
"use_dbus", "use_ipv6", "debuglevel"):
3038
"priority", "servicename", "configdir", "use_dbus",
3039
"use_ipv6", "debuglevel", "restore", "statedir",
3040
"socket", "foreground", "zeroconf"):
1817
3041
value = getattr(options, option)
1818
3042
if value is not None:
1819
3043
server_settings[option] = value
1820
3044
del options
1821
3045
# Force all strings to be unicode
1822
3046
for option in server_settings.keys():
1823
if type(server_settings[option]) is str:
1824
server_settings[option] = unicode(server_settings[option])
3047
if isinstance(server_settings[option], bytes):
3048
server_settings[option] = (server_settings[option]
3049
.decode("utf-8"))
3050
# Force all boolean options to be boolean
3051
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3052
"foreground", "zeroconf"):
3053
server_settings[option] = bool(server_settings[option])
3054
# Debug implies foreground
3055
if server_settings["debug"]:
3056
server_settings["foreground"] = True
1825
3057
# Now we have our good server settings in "server_settings"
1826
3058
1827
3059
##################################################################
1828
3060
3061
if (not server_settings["zeroconf"]
3062
and not (server_settings["port"]
3063
or server_settings["socket"] != "")):
3064
parser.error("Needs port or socket to work without Zeroconf")
3065
1829
3066
# For convenience
1830
3067
debug = server_settings["debug"]
1831
3068
debuglevel = server_settings["debuglevel"]
1832
3069
use_dbus = server_settings["use_dbus"]
1833
3070
use_ipv6 = server_settings["use_ipv6"]
1834
3071
stored_state_path = os.path.join(server_settings["statedir"],
3072
stored_state_file)
3073
foreground = server_settings["foreground"]
3074
zeroconf = server_settings["zeroconf"]
3075
3076
if debug:
3077
initlogger(debug, logging.DEBUG)
3078
else:
3079
if not debuglevel:
3080
initlogger(debug)
3081
else:
3082
level = getattr(logging, debuglevel.upper())
3083
initlogger(debug, level)
3084
1835
3085
if server_settings["servicename"] != "Mandos":
1836
syslogger.setFormatter(logging.Formatter
1837
('Mandos (%s) [%%(process)d]:'
1838
' %%(levelname)s: %%(message)s'
1839
% server_settings["servicename"]))
1840
3086
syslogger.setFormatter(
3087
logging.Formatter('Mandos ({}) [%(process)d]:'
3088
' %(levelname)s: %(message)s'.format(
3089
server_settings["servicename"])))
3090
1841
3091
# Parse config file with clients
1842
client_defaults = { "timeout": "5m",
1843
"extended_timeout": "15m",
1844
"interval": "2m",
1845
"checker": "fping -q -- %%(host)s",
1846
"host": "",
1847
"approval_delay": "0s",
1848
"approval_duration": "1s",
1849
}
1850
client_config = configparser.SafeConfigParser(client_defaults)
3092
client_config = configparser.ConfigParser(Client.client_defaults)
1851
3093
client_config.read(os.path.join(server_settings["configdir"],
1852
3094
"clients.conf"))
1853
3095
1854
3096
global mandos_dbus_service
1855
3097
mandos_dbus_service = None
1856
1857
tcp_server = MandosServer((server_settings["address"],
1858
server_settings["port"]),
1859
ClientHandler,
1860
interface=(server_settings["interface"]
1861
or None),
1862
use_ipv6=use_ipv6,
1863
gnutls_priority=
1864
server_settings["priority"],
1865
use_dbus=use_dbus)
1866
if not debug:
1867
pidfilename = "/var/run/mandos.pid"
1868
try:
1869
pidfile = open(pidfilename, "w")
1870
except IOError:
1871
logger.error("Could not open file %r", pidfilename)
1872
1873
try:
1874
uid = pwd.getpwnam("_mandos").pw_uid
1875
gid = pwd.getpwnam("_mandos").pw_gid
1876
except KeyError:
1877
try:
1878
uid = pwd.getpwnam("mandos").pw_uid
1879
gid = pwd.getpwnam("mandos").pw_gid
3098
3099
socketfd = None
3100
if server_settings["socket"] != "":
3101
socketfd = server_settings["socket"]
3102
tcp_server = MandosServer(
3103
(server_settings["address"], server_settings["port"]),
3104
ClientHandler,
3105
interface=(server_settings["interface"] or None),
3106
use_ipv6=use_ipv6,
3107
gnutls_priority=server_settings["priority"],
3108
use_dbus=use_dbus,
3109
socketfd=socketfd)
3110
if not foreground:
3111
pidfilename = "/run/mandos.pid"
3112
if not os.path.isdir("/run/."):
3113
pidfilename = "/var/run/mandos.pid"
3114
pidfile = None
3115
try:
3116
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3117
except IOError as e:
3118
logger.error("Could not open file %r", pidfilename,
3119
exc_info=e)
3120
3121
for name, group in (("_mandos", "_mandos"),
3122
("mandos", "mandos"),
3123
("nobody", "nogroup")):
3124
try:
3125
uid = pwd.getpwnam(name).pw_uid
3126
gid = pwd.getpwnam(group).pw_gid
3127
break
1880
3128
except KeyError:
1881
try:
1882
uid = pwd.getpwnam("nobody").pw_uid
1883
gid = pwd.getpwnam("nobody").pw_gid
1884
except KeyError:
1885
uid = 65534
1886
gid = 65534
3129
continue
3130
else:
3131
uid = 65534
3132
gid = 65534
1887
3133
try:
1888
3134
os.setgid(gid)
1889
3135
os.setuid(uid)
3136
if debug:
3137
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3138
gid))
1890
3139
except OSError as error:
1891
if error[0] != errno.EPERM:
1892
raise error
1893
1894
if not debug and not debuglevel:
1895
syslogger.setLevel(logging.WARNING)
1896
console.setLevel(logging.WARNING)
1897
if debuglevel:
1898
level = getattr(logging, debuglevel.upper())
1899
syslogger.setLevel(level)
1900
console.setLevel(level)
1901
3140
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3141
.format(uid, gid, os.strerror(error.errno)))
3142
if error.errno != errno.EPERM:
3143
raise
3144
1902
3145
if debug:
1903
3146
# Enable all possible GnuTLS debugging
1904
3147
1905
3148
# "Use a log level over 10 to enable all debugging options."
1906
3149
# - GnuTLS manual
1907
gnutls.library.functions.gnutls_global_set_log_level(11)
1908
1909
@gnutls.library.types.gnutls_log_func
3150
gnutls.global_set_log_level(11)
3151
3152
@gnutls.log_func
1910
3153
def debug_gnutls(level, string):
1911
3154
logger.debug("GnuTLS: %s", string[:-1])
1912
1913
(gnutls.library.functions
1914
.gnutls_global_set_log_function(debug_gnutls))
1915
3155
3156
gnutls.global_set_log_function(debug_gnutls)
3157
1916
3158
# Redirect stdin so all checkers get /dev/null
1917
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3159
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1918
3160
os.dup2(null, sys.stdin.fileno())
1919
3161
if null > 2:
1920
3162
os.close(null)
1921
else:
1922
# No console logging
1923
logger.removeHandler(console)
1924
3163
1925
3164
# Need to fork before connecting to D-Bus
1926
if not debug:
3165
if not foreground:
1927
3166
# Close all input and output, do double fork, etc.
1928
3167
daemon()
1929
3168
3169
if gi.version_info < (3, 10, 2):
3170
# multiprocessing will use threads, so before we use GLib we
3171
# need to inform GLib that threads will be used.
3172
GLib.threads_init()
3173
1930
3174
global main_loop
1931
3175
# From the Avahi example code
1932
DBusGMainLoop(set_as_default=True )
1933
main_loop = gobject.MainLoop()
3176
DBusGMainLoop(set_as_default=True)
3177
main_loop = GLib.MainLoop()
1934
3178
bus = dbus.SystemBus()
1935
3179
# End of Avahi example code
1936
3180
if use_dbus:
1937
3181
try:
1938
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1939
bus, do_not_queue=True)
1940
bus_name2 = dbus.service.BusName("se.recompile.Mandos",
1941
bus, do_not_queue=True)
1942
except dbus.exceptions.NameExistsException as e:
1943
logger.error(unicode(e) + ", disabling D-Bus")
3182
bus_name = dbus.service.BusName("se.recompile.Mandos",
3183
bus,
3184
do_not_queue=True)
3185
old_bus_name = dbus.service.BusName(
3186
"se.bsnet.fukt.Mandos", bus,
3187
do_not_queue=True)
3188
except dbus.exceptions.DBusException as e:
3189
logger.error("Disabling D-Bus:", exc_info=e)
1944
3190
use_dbus = False
1945
3191
server_settings["use_dbus"] = False
1946
3192
tcp_server.use_dbus = False
1947
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1948
service = AvahiService(name = server_settings["servicename"],
1949
servicetype = "_mandos._tcp",
1950
protocol = protocol, bus = bus)
1951
if server_settings["interface"]:
1952
service.interface = (if_nametoindex
1953
(str(server_settings["interface"])))
1954
3193
if zeroconf:
3194
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3195
service = AvahiServiceToSyslog(
3196
name=server_settings["servicename"],
3197
servicetype="_mandos._tcp",
3198
protocol=protocol,
3199
bus=bus)
3200
if server_settings["interface"]:
3201
service.interface = if_nametoindex(
3202
server_settings["interface"].encode("utf-8"))
3203
1955
3204
global multiprocessing_manager
1956
3205
multiprocessing_manager = multiprocessing.Manager()
1957
3206
1958
3207
client_class = Client
1959
3208
if use_dbus:
1960
client_class = functools.partial(ClientDBusTransitional, bus = bus)
1961
def client_config_items(config, section):
1962
special_settings = {
1963
"approved_by_default":
1964
lambda: config.getboolean(section,
1965
"approved_by_default"),
1966
}
1967
for name, value in config.items(section):
3209
client_class = functools.partial(ClientDBus, bus=bus)
3210
3211
client_settings = Client.config_parser(client_config)
3212
old_client_settings = {}
3213
clients_data = {}
3214
3215
# This is used to redirect stdout and stderr for checker processes
3216
global wnull
3217
wnull = open(os.devnull, "w") # A writable /dev/null
3218
# Only used if server is running in foreground but not in debug
3219
# mode
3220
if debug or not foreground:
3221
wnull.close()
3222
3223
# Get client data and settings from last running state.
3224
if server_settings["restore"]:
3225
try:
3226
with open(stored_state_path, "rb") as stored_state:
3227
if sys.version_info.major == 2:
3228
clients_data, old_client_settings = pickle.load(
3229
stored_state)
3230
else:
3231
bytes_clients_data, bytes_old_client_settings = (
3232
pickle.load(stored_state, encoding="bytes"))
3233
# Fix bytes to strings
3234
# clients_data
3235
# .keys()
3236
clients_data = {(key.decode("utf-8")
3237
if isinstance(key, bytes)
3238
else key): value
3239
for key, value in
3240
bytes_clients_data.items()}
3241
del bytes_clients_data
3242
for key in clients_data:
3243
value = {(k.decode("utf-8")
3244
if isinstance(k, bytes) else k): v
3245
for k, v in
3246
clients_data[key].items()}
3247
clients_data[key] = value
3248
# .client_structure
3249
value["client_structure"] = [
3250
(s.decode("utf-8")
3251
if isinstance(s, bytes)
3252
else s) for s in
3253
value["client_structure"]]
3254
# .name & .host
3255
for k in ("name", "host"):
3256
if isinstance(value[k], bytes):
3257
value[k] = value[k].decode("utf-8")
3258
if "key_id" not in value:
3259
value["key_id"] = ""
3260
elif "fingerprint" not in value:
3261
value["fingerprint"] = ""
3262
# old_client_settings
3263
# .keys()
3264
old_client_settings = {
3265
(key.decode("utf-8")
3266
if isinstance(key, bytes)
3267
else key): value
3268
for key, value in
3269
bytes_old_client_settings.items()}
3270
del bytes_old_client_settings
3271
# .host
3272
for value in old_client_settings.values():
3273
if isinstance(value["host"], bytes):
3274
value["host"] = (value["host"]
3275
.decode("utf-8"))
3276
os.remove(stored_state_path)
3277
except IOError as e:
3278
if e.errno == errno.ENOENT:
3279
logger.warning("Could not load persistent state:"
3280
" {}".format(os.strerror(e.errno)))
3281
else:
3282
logger.critical("Could not load persistent state:",
3283
exc_info=e)
3284
raise
3285
except EOFError as e:
3286
logger.warning("Could not load persistent state: "
3287
"EOFError:",
3288
exc_info=e)
3289
3290
with PGPEngine() as pgp:
3291
for client_name, client in clients_data.items():
3292
# Skip removed clients
3293
if client_name not in client_settings:
3294
continue
3295
3296
# Decide which value to use after restoring saved state.
3297
# We have three different values: Old config file,
3298
# new config file, and saved state.
3299
# New config value takes precedence if it differs from old
3300
# config value, otherwise use saved state.
3301
for name, value in client_settings[client_name].items():
3302
try:
3303
# For each value in new config, check if it
3304
# differs from the old config value (Except for
3305
# the "secret" attribute)
3306
if (name != "secret"
3307
and (value !=
3308
old_client_settings[client_name][name])):
3309
client[name] = value
3310
except KeyError:
3311
pass
3312
3313
# Clients who has passed its expire date can still be
3314
# enabled if its last checker was successful. A Client
3315
# whose checker succeeded before we stored its state is
3316
# assumed to have successfully run all checkers during
3317
# downtime.
3318
if client["enabled"]:
3319
if datetime.datetime.utcnow() >= client["expires"]:
3320
if not client["last_checked_ok"]:
3321
logger.warning(
3322
"disabling client {} - Client never "
3323
"performed a successful checker".format(
3324
client_name))
3325
client["enabled"] = False
3326
elif client["last_checker_status"] != 0:
3327
logger.warning(
3328
"disabling client {} - Client last"
3329
" checker failed with error code"
3330
" {}".format(
3331
client_name,
3332
client["last_checker_status"]))
3333
client["enabled"] = False
3334
else:
3335
client["expires"] = (
3336
datetime.datetime.utcnow()
3337
+ client["timeout"])
3338
logger.debug("Last checker succeeded,"
3339
" keeping {} enabled".format(
3340
client_name))
1968
3341
try:
1969
yield (name, special_settings[name]())
1970
except KeyError:
1971
yield (name, value)
1972
1973
tcp_server.clients.update(set(
1974
client_class(name = section,
1975
config= dict(client_config_items(
1976
client_config, section)))
1977
for section in client_config.sections()))
3342
client["secret"] = pgp.decrypt(
3343
client["encrypted_secret"],
3344
client_settings[client_name]["secret"])
3345
except PGPError:
3346
# If decryption fails, we use secret from new settings
3347
logger.debug("Failed to decrypt {} old secret".format(
3348
client_name))
3349
client["secret"] = (client_settings[client_name]
3350
["secret"])
3351
3352
# Add/remove clients based on new changes made to config
3353
for client_name in (set(old_client_settings)
3354
- set(client_settings)):
3355
del clients_data[client_name]
3356
for client_name in (set(client_settings)
3357
- set(old_client_settings)):
3358
clients_data[client_name] = client_settings[client_name]
3359
3360
# Create all client objects
3361
for client_name, client in clients_data.items():
3362
tcp_server.clients[client_name] = client_class(
3363
name=client_name,
3364
settings=client,
3365
server_settings=server_settings)
3366
1978
3367
if not tcp_server.clients:
1979
3368
logger.warning("No clients defined")
1980
1981
if not debug:
1982
try:
1983
with pidfile:
1984
pid = os.getpid()
1985
pidfile.write(str(pid) + "\n".encode("utf-8"))
1986
del pidfile
1987
except IOError:
1988
logger.error("Could not write to file %r with PID %d",
1989
pidfilename, pid)
1990
except NameError:
1991
# "pidfile" was never created
1992
pass
3369
3370
if not foreground:
3371
if pidfile is not None:
3372
pid = os.getpid()
3373
try:
3374
with pidfile:
3375
print(pid, file=pidfile)
3376
except IOError:
3377
logger.error("Could not write to file %r with PID %d",
3378
pidfilename, pid)
3379
del pidfile
1993
3380
del pidfilename
1994
1995
signal.signal(signal.SIGINT, signal.SIG_IGN)
1996
1997
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1998
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1999
3381
3382
for termsig in (signal.SIGHUP, signal.SIGTERM):
3383
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3384
lambda: main_loop.quit() and False)
3385
2000
3386
if use_dbus:
2001
class MandosDBusService(dbus.service.Object):
3387
3388
@alternate_dbus_interfaces(
3389
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3390
class MandosDBusService(DBusObjectWithObjectManager):
2002
3391
"""A D-Bus proxy object"""
3392
2003
3393
def __init__(self):
2004
3394
dbus.service.Object.__init__(self, bus, "/")
2005
_interface = "se.bsnet.fukt.Mandos"
2006
3395
3396
_interface = "se.recompile.Mandos"
3397
2007
3398
@dbus.service.signal(_interface, signature="o")
2008
3399
def ClientAdded(self, objpath):
2009
3400
"D-Bus signal"
2010
3401
pass
2011
3402
2012
3403
@dbus.service.signal(_interface, signature="ss")
2013
def ClientNotFound(self, fingerprint, address):
3404
def ClientNotFound(self, key_id, address):
2014
3405
"D-Bus signal"
2015
3406
pass
2016
3407
3408
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3409
"true"})
2017
3410
@dbus.service.signal(_interface, signature="os")
2018
3411
def ClientRemoved(self, objpath, name):
2019
3412
"D-Bus signal"
2020
3413
pass
2021
3414
3415
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3416
"true"})
2022
3417
@dbus.service.method(_interface, out_signature="ao")
2023
3418
def GetAllClients(self):
2024
3419
"D-Bus method"
2025
return dbus.Array(c.dbus_object_path
2026
for c in tcp_server.clients)
2027
3420
return dbus.Array(c.dbus_object_path for c in
3421
tcp_server.clients.values())
3422
3423
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3424
"true"})
2028
3425
@dbus.service.method(_interface,
2029
3426
out_signature="a{oa{sv}}")
2030
3427
def GetAllClientsWithProperties(self):
2031
3428
"D-Bus method"
2032
3429
return dbus.Dictionary(
2033
((c.dbus_object_path, c.GetAll(""))
2034
for c in tcp_server.clients),
3430
{c.dbus_object_path: c.GetAll(
3431
"se.recompile.Mandos.Client")
3432
for c in tcp_server.clients.values()},
2035
3433
signature="oa{sv}")
2036
3434
2037
3435
@dbus.service.method(_interface, in_signature="o")
2038
3436
def RemoveClient(self, object_path):
2039
3437
"D-Bus method"
2040
for c in tcp_server.clients:
3438
for c in tcp_server.clients.values():
2041
3439
if c.dbus_object_path == object_path:
2042
tcp_server.clients.remove(c)
3440
del tcp_server.clients[c.name]
2043
3441
c.remove_from_connection()
2044
# Don't signal anything except ClientRemoved
3442
# Don't signal the disabling
2045
3443
c.disable(quiet=True)
2046
# Emit D-Bus signal
2047
self.ClientRemoved(object_path, c.name)
3444
# Emit D-Bus signal for removal
3445
self.client_removed_signal(c)
2048
3446
return
2049
3447
raise KeyError(object_path)
2050
3448
2051
3449
del _interface
2052
2053
class MandosDBusServiceTransitional(MandosDBusService):
2054
__metaclass__ = transitional_dbus_metaclass
2055
mandos_dbus_service = MandosDBusServiceTransitional()
2056
3450
3451
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3452
out_signature="a{oa{sa{sv}}}")
3453
def GetManagedObjects(self):
3454
"""D-Bus method"""
3455
return dbus.Dictionary(
3456
{client.dbus_object_path:
3457
dbus.Dictionary(
3458
{interface: client.GetAll(interface)
3459
for interface in
3460
client._get_all_interface_names()})
3461
for client in tcp_server.clients.values()})
3462
3463
def client_added_signal(self, client):
3464
"""Send the new standard signal and the old signal"""
3465
if use_dbus:
3466
# New standard signal
3467
self.InterfacesAdded(
3468
client.dbus_object_path,
3469
dbus.Dictionary(
3470
{interface: client.GetAll(interface)
3471
for interface in
3472
client._get_all_interface_names()}))
3473
# Old signal
3474
self.ClientAdded(client.dbus_object_path)
3475
3476
def client_removed_signal(self, client):
3477
"""Send the new standard signal and the old signal"""
3478
if use_dbus:
3479
# New standard signal
3480
self.InterfacesRemoved(
3481
client.dbus_object_path,
3482
client._get_all_interface_names())
3483
# Old signal
3484
self.ClientRemoved(client.dbus_object_path,
3485
client.name)
3486
3487
mandos_dbus_service = MandosDBusService()
3488
3489
# Save modules to variables to exempt the modules from being
3490
# unloaded before the function registered with atexit() is run.
3491
mp = multiprocessing
3492
wn = wnull
3493
2057
3494
def cleanup():
2058
3495
"Cleanup function; run on exit"
2059
service.cleanup()
2060
3496
if zeroconf:
3497
service.cleanup()
3498
3499
mp.active_children()
3500
wn.close()
3501
if not (tcp_server.clients or client_settings):
3502
return
3503
3504
# Store client before exiting. Secrets are encrypted with key
3505
# based on what config file has. If config file is
3506
# removed/edited, old secret will thus be unrecovable.
3507
clients = {}
3508
with PGPEngine() as pgp:
3509
for client in tcp_server.clients.values():
3510
key = client_settings[client.name]["secret"]
3511
client.encrypted_secret = pgp.encrypt(client.secret,
3512
key)
3513
client_dict = {}
3514
3515
# A list of attributes that can not be pickled
3516
# + secret.
3517
exclude = {"bus", "changedstate", "secret",
3518
"checker", "server_settings"}
3519
for name, typ in inspect.getmembers(dbus.service
3520
.Object):
3521
exclude.add(name)
3522
3523
client_dict["encrypted_secret"] = (client
3524
.encrypted_secret)
3525
for attr in client.client_structure:
3526
if attr not in exclude:
3527
client_dict[attr] = getattr(client, attr)
3528
3529
clients[client.name] = client_dict
3530
del client_settings[client.name]["secret"]
3531
3532
try:
3533
with tempfile.NamedTemporaryFile(
3534
mode='wb',
3535
suffix=".pickle",
3536
prefix='clients-',
3537
dir=os.path.dirname(stored_state_path),
3538
delete=False) as stored_state:
3539
pickle.dump((clients, client_settings), stored_state,
3540
protocol=2)
3541
tempname = stored_state.name
3542
os.rename(tempname, stored_state_path)
3543
except (IOError, OSError) as e:
3544
if not debug:
3545
try:
3546
os.remove(tempname)
3547
except NameError:
3548
pass
3549
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3550
logger.warning("Could not save persistent state: {}"
3551
.format(os.strerror(e.errno)))
3552
else:
3553
logger.warning("Could not save persistent state:",
3554
exc_info=e)
3555
raise
3556
3557
# Delete all clients, and settings from config
2061
3558
while tcp_server.clients:
2062
client = tcp_server.clients.pop()
3559
name, client = tcp_server.clients.popitem()
2063
3560
if use_dbus:
2064
3561
client.remove_from_connection()
2065
client.disable_hook = None
2066
# Don't signal anything except ClientRemoved
3562
# Don't signal the disabling
2067
3563
client.disable(quiet=True)
3564
# Emit D-Bus signal for removal
2068
3565
if use_dbus:
2069
# Emit D-Bus signal
2070
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
2071
client.name)
2072
3566
mandos_dbus_service.client_removed_signal(client)
3567
client_settings.clear()
3568
2073
3569
atexit.register(cleanup)
2074
2075
for client in tcp_server.clients:
3570
3571
for client in tcp_server.clients.values():
2076
3572
if use_dbus:
2077
# Emit D-Bus signal
2078
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2079
client.enable()
2080
3573
# Emit D-Bus signal for adding
3574
mandos_dbus_service.client_added_signal(client)
3575
# Need to initiate checking of clients
3576
if client.enabled:
3577
client.init_checker()
3578
2081
3579
tcp_server.enable()
2082
3580
tcp_server.server_activate()
2083
3581
2084
3582
# Find out what port we got
2085
service.port = tcp_server.socket.getsockname()[1]
3583
if zeroconf:
3584
service.port = tcp_server.socket.getsockname()[1]
2086
3585
if use_ipv6:
2087
3586
logger.info("Now listening on address %r, port %d,"
2088
" flowinfo %d, scope_id %d"
2089
% tcp_server.socket.getsockname())
3587
" flowinfo %d, scope_id %d",
3588
*tcp_server.socket.getsockname())
2090
3589
else: # IPv4
2091
logger.info("Now listening on address %r, port %d"
2092
% tcp_server.socket.getsockname())
2093
2094
#service.interface = tcp_server.socket.getsockname()[3]
2095
3590
logger.info("Now listening on address %r, port %d",
3591
*tcp_server.socket.getsockname())
3592
3593
# service.interface = tcp_server.socket.getsockname()[3]
3594
2096
3595
try:
2097
# From the Avahi example code
2098
try:
2099
service.activate()
2100
except dbus.exceptions.DBusException as error:
2101
logger.critical("DBusException: %s", error)
2102
cleanup()
2103
sys.exit(1)
2104
# End of Avahi example code
2105
2106
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2107
lambda *args, **kwargs:
2108
(tcp_server.handle_request
2109
(*args[2:], **kwargs) or True))
2110
3596
if zeroconf:
3597
# From the Avahi example code
3598
try:
3599
service.activate()
3600
except dbus.exceptions.DBusException as error:
3601
logger.critical("D-Bus Exception", exc_info=error)
3602
cleanup()
3603
sys.exit(1)
3604
# End of Avahi example code
3605
3606
GLib.io_add_watch(
3607
GLib.IOChannel.unix_new(tcp_server.fileno()),
3608
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3609
lambda *args, **kwargs: (tcp_server.handle_request
3610
(*args[2:], **kwargs) or True))
3611
2111
3612
logger.debug("Starting main loop")
2112
3613
main_loop.run()
2113
3614
except AvahiError as error:
2114
logger.critical("AvahiError: %s", error)
3615
logger.critical("Avahi Error", exc_info=error)
2115
3616
cleanup()
2116
3617
sys.exit(1)
2117
3618
except KeyboardInterrupt:
2122
3623
# Must run before the D-Bus bus name gets deregistered
2123
3624
cleanup()
2124
3625
3626
3627
def should_only_run_tests():
3628
parser = argparse.ArgumentParser(add_help=False)
3629
parser.add_argument("--check", action='store_true')
3630
args, unknown_args = parser.parse_known_args()
3631
run_tests = args.check
3632
if run_tests:
3633
# Remove --check argument from sys.argv
3634
sys.argv[1:] = unknown_args
3635
return run_tests
3636
3637
# Add all tests from doctest strings
3638
def load_tests(loader, tests, none):
3639
import doctest
3640
tests.addTests(doctest.DocTestSuite())
3641
return tests
2125
3642
2126
3643
if __name__ == '__main__':
2127
main()
3644
try:
3645
if should_only_run_tests():
3646
# Call using ./mandos --check [--verbose]
3647
unittest.main()
3648
else:
3649
main()
3650
finally:
3651
logging.shutdown()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0