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- Committer: teddy at bsnet
- Date: 2011-03-15 19:15:24 UTC
- Revision ID: teddy@fukt.bsnet.se-20110315191524-jc3ajgqu2za7dcly
* mandos: Use the new argparse library instead of optparse.
* debian/control (mandos): Depend on python (<=2.7) | python-argparse
* debian/control (mandos): Depend on python (<=2.7) | python-argparse
- files added:
- initramfs-tools-hook-conf
- files removed:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python3 -bI
2
# -*- mode: python; after-save-hook: (lambda () (let ((command (if (fboundp 'file-local-name) (file-local-name (buffer-file-name)) (or (file-remote-p (buffer-file-name) 'localname) (buffer-file-name))))) (if (= (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (format "%s --check" (shell-quote-argument command)) nil "*Test*")) 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w))) (progn (with-current-buffer "*Test*" (compilation-mode)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); coding: utf-8 -*-
3
#
1
#!/usr/bin/python
2
# -*- mode: python; coding: utf-8 -*-
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2020 Teddy Hogeborn
15
# Copyright © 2008-2020 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2011 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
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
28
#
26
#
29
27
# You should have received a copy of the GNU General Public License
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
32
# Contact the authors at <mandos@recompile.se>.
33
#
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
#
34
33
35
34
from __future__ import (division, absolute_import, print_function,
36
35
unicode_literals)
37
36
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
37
import SocketServer as socketserver
47
38
import socket
48
39
import argparse
49
40
import datetime
50
41
import errno
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
55
49
import sys
56
50
import re
57
51
import os
66
60
import struct
67
61
import fcntl
68
62
import functools
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
63
import cPickle as pickle
73
64
import multiprocessing
74
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
80
import unittest
81
import random
82
import shlex
83
65
84
66
import dbus
85
67
import dbus.service
86
import gi
87
from gi.repository import GLib
68
import gobject
69
import avahi
88
70
from dbus.mainloop.glib import DBusGMainLoop
89
71
import ctypes
90
72
import ctypes.util
91
73
import xml.dom.minidom
92
74
import inspect
93
75
94
if sys.version_info.major == 2:
95
__metaclass__ = type
96
str = unicode
97
98
# Add collections.abc.Callable if it does not exist
99
try:
100
collections.abc.Callable
101
except AttributeError:
102
class abc:
103
Callable = collections.Callable
104
collections.abc = abc
105
del abc
106
107
# Add shlex.quote if it does not exist
108
try:
109
shlex.quote
110
except AttributeError:
111
shlex.quote = re.escape
112
113
# Show warnings by default
114
if not sys.warnoptions:
115
import warnings
116
warnings.simplefilter("default")
117
118
# Try to find the value of SO_BINDTODEVICE:
119
try:
120
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
121
# newer, and it is also the most natural place for it:
76
try:
122
77
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
123
78
except AttributeError:
124
79
try:
125
# This is where SO_BINDTODEVICE was up to and including Python
126
# 2.6, and also 3.2:
127
80
from IN import SO_BINDTODEVICE
128
81
except ImportError:
129
# In Python 2.7 it seems to have been removed entirely.
130
# Try running the C preprocessor:
131
try:
132
cc = subprocess.Popen(["cc", "--language=c", "-E",
133
"/dev/stdin"],
134
stdin=subprocess.PIPE,
135
stdout=subprocess.PIPE)
136
stdout = cc.communicate(
137
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
138
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
139
except (OSError, ValueError, IndexError):
140
# No value found
141
SO_BINDTODEVICE = None
142
143
if sys.version_info < (3, 2):
144
configparser.Configparser = configparser.SafeConfigParser
145
146
version = "1.8.13"
147
stored_state_file = "clients.pickle"
148
149
logger = logging.getLogger()
150
logging.captureWarnings(True) # Show warnings via the logging system
151
syslogger = None
152
153
try:
154
if_nametoindex = ctypes.cdll.LoadLibrary(
155
ctypes.util.find_library("c")).if_nametoindex
156
except (OSError, AttributeError):
157
158
def if_nametoindex(interface):
159
"Get an interface index the hard way, i.e. using fcntl()"
160
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
161
with contextlib.closing(socket.socket()) as s:
162
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
163
struct.pack(b"16s16x", interface))
164
interface_index = struct.unpack("I", ifreq[16:20])[0]
165
return interface_index
166
167
168
def copy_function(func):
169
"""Make a copy of a function"""
170
if sys.version_info.major == 2:
171
return types.FunctionType(func.func_code,
172
func.func_globals,
173
func.func_name,
174
func.func_defaults,
175
func.func_closure)
176
else:
177
return types.FunctionType(func.__code__,
178
func.__globals__,
179
func.__name__,
180
func.__defaults__,
181
func.__closure__)
182
183
184
def initlogger(debug, level=logging.WARNING):
185
"""init logger and add loglevel"""
186
187
global syslogger
188
syslogger = (logging.handlers.SysLogHandler(
189
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
190
address="/dev/log"))
191
syslogger.setFormatter(logging.Formatter
192
('Mandos [%(process)d]: %(levelname)s:'
193
' %(message)s'))
194
logger.addHandler(syslogger)
195
196
if debug:
197
console = logging.StreamHandler()
198
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
199
' [%(process)d]:'
200
' %(levelname)s:'
201
' %(message)s'))
202
logger.addHandler(console)
203
logger.setLevel(level)
204
205
206
class PGPError(Exception):
207
"""Exception if encryption/decryption fails"""
208
pass
209
210
211
class PGPEngine:
212
"""A simple class for OpenPGP symmetric encryption & decryption"""
213
214
def __init__(self):
215
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
216
self.gpg = "gpg"
217
try:
218
output = subprocess.check_output(["gpgconf"])
219
for line in output.splitlines():
220
name, text, path = line.split(b":")
221
if name == b"gpg":
222
self.gpg = path
223
break
224
except OSError as e:
225
if e.errno != errno.ENOENT:
226
raise
227
self.gnupgargs = ['--batch',
228
'--homedir', self.tempdir,
229
'--force-mdc',
230
'--quiet']
231
# Only GPG version 1 has the --no-use-agent option.
232
if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
233
self.gnupgargs.append("--no-use-agent")
234
235
def __enter__(self):
236
return self
237
238
def __exit__(self, exc_type, exc_value, traceback):
239
self._cleanup()
240
return False
241
242
def __del__(self):
243
self._cleanup()
244
245
def _cleanup(self):
246
if self.tempdir is not None:
247
# Delete contents of tempdir
248
for root, dirs, files in os.walk(self.tempdir,
249
topdown=False):
250
for filename in files:
251
os.remove(os.path.join(root, filename))
252
for dirname in dirs:
253
os.rmdir(os.path.join(root, dirname))
254
# Remove tempdir
255
os.rmdir(self.tempdir)
256
self.tempdir = None
257
258
def password_encode(self, password):
259
# Passphrase can not be empty and can not contain newlines or
260
# NUL bytes. So we prefix it and hex encode it.
261
encoded = b"mandos" + binascii.hexlify(password)
262
if len(encoded) > 2048:
263
# GnuPG can't handle long passwords, so encode differently
264
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
265
.replace(b"\n", b"\\n")
266
.replace(b"\0", b"\\x00"))
267
return encoded
268
269
def encrypt(self, data, password):
270
passphrase = self.password_encode(password)
271
with tempfile.NamedTemporaryFile(
272
dir=self.tempdir) as passfile:
273
passfile.write(passphrase)
274
passfile.flush()
275
proc = subprocess.Popen([self.gpg, '--symmetric',
276
'--passphrase-file',
277
passfile.name]
278
+ self.gnupgargs,
279
stdin=subprocess.PIPE,
280
stdout=subprocess.PIPE,
281
stderr=subprocess.PIPE)
282
ciphertext, err = proc.communicate(input=data)
283
if proc.returncode != 0:
284
raise PGPError(err)
285
return ciphertext
286
287
def decrypt(self, data, password):
288
passphrase = self.password_encode(password)
289
with tempfile.NamedTemporaryFile(
290
dir=self.tempdir) as passfile:
291
passfile.write(passphrase)
292
passfile.flush()
293
proc = subprocess.Popen([self.gpg, '--decrypt',
294
'--passphrase-file',
295
passfile.name]
296
+ self.gnupgargs,
297
stdin=subprocess.PIPE,
298
stdout=subprocess.PIPE,
299
stderr=subprocess.PIPE)
300
decrypted_plaintext, err = proc.communicate(input=data)
301
if proc.returncode != 0:
302
raise PGPError(err)
303
return decrypted_plaintext
304
305
306
# Pretend that we have an Avahi module
307
class avahi:
308
"""This isn't so much a class as it is a module-like namespace."""
309
IF_UNSPEC = -1 # avahi-common/address.h
310
PROTO_UNSPEC = -1 # avahi-common/address.h
311
PROTO_INET = 0 # avahi-common/address.h
312
PROTO_INET6 = 1 # avahi-common/address.h
313
DBUS_NAME = "org.freedesktop.Avahi"
314
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
315
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
316
DBUS_PATH_SERVER = "/"
317
318
@staticmethod
319
def string_array_to_txt_array(t):
320
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
321
for s in t), signature="ay")
322
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
323
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
324
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
325
SERVER_INVALID = 0 # avahi-common/defs.h
326
SERVER_REGISTERING = 1 # avahi-common/defs.h
327
SERVER_RUNNING = 2 # avahi-common/defs.h
328
SERVER_COLLISION = 3 # avahi-common/defs.h
329
SERVER_FAILURE = 4 # avahi-common/defs.h
330
82
SO_BINDTODEVICE = None
83
84
85
version = "1.3.0"
86
87
#logger = logging.getLogger('mandos')
88
logger = logging.Logger('mandos')
89
syslogger = (logging.handlers.SysLogHandler
90
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
91
address = str("/dev/log")))
92
syslogger.setFormatter(logging.Formatter
93
('Mandos [%(process)d]: %(levelname)s:'
94
' %(message)s'))
95
logger.addHandler(syslogger)
96
97
console = logging.StreamHandler()
98
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
99
' %(levelname)s:'
100
' %(message)s'))
101
logger.addHandler(console)
331
102
332
103
class AvahiError(Exception):
333
104
def __init__(self, value, *args, **kwargs):
334
105
self.value = value
335
return super(AvahiError, self).__init__(value, *args,
336
**kwargs)
337
106
super(AvahiError, self).__init__(value, *args, **kwargs)
107
def __unicode__(self):
108
return unicode(repr(self.value))
338
109
339
110
class AvahiServiceError(AvahiError):
340
111
pass
341
112
342
343
113
class AvahiGroupError(AvahiError):
344
114
pass
345
115
346
116
347
class AvahiService:
117
class AvahiService(object):
348
118
"""An Avahi (Zeroconf) service.
349
119
350
120
Attributes:
351
121
interface: integer; avahi.IF_UNSPEC or an interface index.
352
122
Used to optionally bind to the specified interface.
353
123
name: string; Example: 'Mandos'
354
124
type: string; Example: '_mandos._tcp'.
355
See <https://www.iana.org/assignments/service-names-port-numbers>
125
See <http://www.dns-sd.org/ServiceTypes.html>
356
126
port: integer; what port to announce
357
127
TXT: list of strings; TXT record for the service
358
128
domain: string; Domain to publish on, default to .local if empty.
364
134
server: D-Bus Server
365
135
bus: dbus.SystemBus()
366
136
"""
367
368
def __init__(self,
369
interface=avahi.IF_UNSPEC,
370
name=None,
371
servicetype=None,
372
port=None,
373
TXT=None,
374
domain="",
375
host="",
376
max_renames=32768,
377
protocol=avahi.PROTO_UNSPEC,
378
bus=None):
137
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
138
servicetype = None, port = None, TXT = None,
139
domain = "", host = "", max_renames = 32768,
140
protocol = avahi.PROTO_UNSPEC, bus = None):
379
141
self.interface = interface
380
142
self.name = name
381
143
self.type = servicetype
389
151
self.group = None # our entry group
390
152
self.server = None
391
153
self.bus = bus
392
self.entry_group_state_changed_match = None
393
394
def rename(self, remove=True):
154
def rename(self):
395
155
"""Derived from the Avahi example code"""
396
156
if self.rename_count >= self.max_renames:
397
157
logger.critical("No suitable Zeroconf service name found"
398
158
" after %i retries, exiting.",
399
159
self.rename_count)
400
160
raise AvahiServiceError("Too many renames")
401
self.name = str(
402
self.server.GetAlternativeServiceName(self.name))
403
self.rename_count += 1
161
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
404
162
logger.info("Changing Zeroconf service name to %r ...",
405
163
self.name)
406
if remove:
407
self.remove()
164
syslogger.setFormatter(logging.Formatter
165
('Mandos (%s) [%%(process)d]:'
166
' %%(levelname)s: %%(message)s'
167
% self.name))
168
self.remove()
408
169
try:
409
170
self.add()
410
except dbus.exceptions.DBusException as error:
411
if (error.get_dbus_name()
412
== "org.freedesktop.Avahi.CollisionError"):
413
logger.info("Local Zeroconf service name collision.")
414
return self.rename(remove=False)
415
else:
416
logger.critical("D-Bus Exception", exc_info=error)
417
self.cleanup()
418
os._exit(1)
419
171
except dbus.exceptions.DBusException, error:
172
logger.critical("DBusException: %s", error)
173
self.cleanup()
174
os._exit(1)
175
self.rename_count += 1
420
176
def remove(self):
421
177
"""Derived from the Avahi example code"""
422
if self.entry_group_state_changed_match is not None:
423
self.entry_group_state_changed_match.remove()
424
self.entry_group_state_changed_match = None
425
178
if self.group is not None:
426
179
self.group.Reset()
427
428
180
def add(self):
429
181
"""Derived from the Avahi example code"""
430
self.remove()
431
182
if self.group is None:
432
183
self.group = dbus.Interface(
433
184
self.bus.get_object(avahi.DBUS_NAME,
434
185
self.server.EntryGroupNew()),
435
186
avahi.DBUS_INTERFACE_ENTRY_GROUP)
436
self.entry_group_state_changed_match = (
437
self.group.connect_to_signal(
438
'StateChanged', self.entry_group_state_changed))
187
self.group.connect_to_signal('StateChanged',
188
self
189
.entry_group_state_changed)
439
190
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
440
191
self.name, self.type)
441
192
self.group.AddService(
447
198
dbus.UInt16(self.port),
448
199
avahi.string_array_to_txt_array(self.TXT))
449
200
self.group.Commit()
450
451
201
def entry_group_state_changed(self, state, error):
452
202
"""Derived from the Avahi example code"""
453
203
logger.debug("Avahi entry group state change: %i", state)
454
204
455
205
if state == avahi.ENTRY_GROUP_ESTABLISHED:
456
206
logger.debug("Zeroconf service established.")
457
207
elif state == avahi.ENTRY_GROUP_COLLISION:
459
209
self.rename()
460
210
elif state == avahi.ENTRY_GROUP_FAILURE:
461
211
logger.critical("Avahi: Error in group state changed %s",
462
str(error))
463
raise AvahiGroupError("State changed: {!s}".format(error))
464
212
unicode(error))
213
raise AvahiGroupError("State changed: %s"
214
% unicode(error))
465
215
def cleanup(self):
466
216
"""Derived from the Avahi example code"""
467
217
if self.group is not None:
468
try:
469
self.group.Free()
470
except (dbus.exceptions.UnknownMethodException,
471
dbus.exceptions.DBusException):
472
pass
218
self.group.Free()
473
219
self.group = None
474
self.remove()
475
476
def server_state_changed(self, state, error=None):
220
def server_state_changed(self, state):
477
221
"""Derived from the Avahi example code"""
478
222
logger.debug("Avahi server state change: %i", state)
479
bad_states = {
480
avahi.SERVER_INVALID: "Zeroconf server invalid",
481
avahi.SERVER_REGISTERING: None,
482
avahi.SERVER_COLLISION: "Zeroconf server name collision",
483
avahi.SERVER_FAILURE: "Zeroconf server failure",
484
}
485
if state in bad_states:
486
if bad_states[state] is not None:
487
if error is None:
488
logger.error(bad_states[state])
489
else:
490
logger.error(bad_states[state] + ": %r", error)
491
self.cleanup()
223
if state == avahi.SERVER_COLLISION:
224
logger.error("Zeroconf server name collision")
225
self.remove()
492
226
elif state == avahi.SERVER_RUNNING:
493
try:
494
self.add()
495
except dbus.exceptions.DBusException as error:
496
if (error.get_dbus_name()
497
== "org.freedesktop.Avahi.CollisionError"):
498
logger.info("Local Zeroconf service name"
499
" collision.")
500
return self.rename(remove=False)
501
else:
502
logger.critical("D-Bus Exception", exc_info=error)
503
self.cleanup()
504
os._exit(1)
505
else:
506
if error is None:
507
logger.debug("Unknown state: %r", state)
508
else:
509
logger.debug("Unknown state: %r: %r", state, error)
510
227
self.add()
511
228
def activate(self):
512
229
"""Derived from the Avahi example code"""
513
230
if self.server is None:
514
231
self.server = dbus.Interface(
515
232
self.bus.get_object(avahi.DBUS_NAME,
516
avahi.DBUS_PATH_SERVER,
517
follow_name_owner_changes=True),
233
avahi.DBUS_PATH_SERVER),
518
234
avahi.DBUS_INTERFACE_SERVER)
519
235
self.server.connect_to_signal("StateChanged",
520
self.server_state_changed)
236
self.server_state_changed)
521
237
self.server_state_changed(self.server.GetState())
522
238
523
239
524
class AvahiServiceToSyslog(AvahiService):
525
def rename(self, *args, **kwargs):
526
"""Add the new name to the syslog messages"""
527
ret = super(AvahiServiceToSyslog, self).rename(*args,
528
**kwargs)
529
syslogger.setFormatter(logging.Formatter(
530
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
531
.format(self.name)))
532
return ret
533
534
535
# Pretend that we have a GnuTLS module
536
class gnutls:
537
"""This isn't so much a class as it is a module-like namespace."""
538
539
library = ctypes.util.find_library("gnutls")
540
if library is None:
541
library = ctypes.util.find_library("gnutls-deb0")
542
_library = ctypes.cdll.LoadLibrary(library)
543
del library
544
545
# Unless otherwise indicated, the constants and types below are
546
# all from the gnutls/gnutls.h C header file.
547
548
# Constants
549
E_SUCCESS = 0
550
E_INTERRUPTED = -52
551
E_AGAIN = -28
552
CRT_OPENPGP = 2
553
CRT_RAWPK = 3
554
CLIENT = 2
555
SHUT_RDWR = 0
556
CRD_CERTIFICATE = 1
557
E_NO_CERTIFICATE_FOUND = -49
558
X509_FMT_DER = 0
559
NO_TICKETS = 1<<10
560
ENABLE_RAWPK = 1<<18
561
CTYPE_PEERS = 3
562
KEYID_USE_SHA256 = 1 # gnutls/x509.h
563
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
564
565
# Types
566
class session_int(ctypes.Structure):
567
_fields_ = []
568
session_t = ctypes.POINTER(session_int)
569
570
class certificate_credentials_st(ctypes.Structure):
571
_fields_ = []
572
certificate_credentials_t = ctypes.POINTER(
573
certificate_credentials_st)
574
certificate_type_t = ctypes.c_int
575
576
class datum_t(ctypes.Structure):
577
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
578
('size', ctypes.c_uint)]
579
580
class openpgp_crt_int(ctypes.Structure):
581
_fields_ = []
582
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
583
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
584
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
585
credentials_type_t = ctypes.c_int
586
transport_ptr_t = ctypes.c_void_p
587
close_request_t = ctypes.c_int
588
589
# Exceptions
590
class Error(Exception):
591
def __init__(self, message=None, code=None, args=()):
592
# Default usage is by a message string, but if a return
593
# code is passed, convert it to a string with
594
# gnutls.strerror()
595
self.code = code
596
if message is None and code is not None:
597
message = gnutls.strerror(code)
598
return super(gnutls.Error, self).__init__(
599
message, *args)
600
601
class CertificateSecurityError(Error):
602
pass
603
604
# Classes
605
class Credentials:
606
def __init__(self):
607
self._c_object = gnutls.certificate_credentials_t()
608
gnutls.certificate_allocate_credentials(
609
ctypes.byref(self._c_object))
610
self.type = gnutls.CRD_CERTIFICATE
611
612
def __del__(self):
613
gnutls.certificate_free_credentials(self._c_object)
614
615
class ClientSession:
616
def __init__(self, socket, credentials=None):
617
self._c_object = gnutls.session_t()
618
gnutls_flags = gnutls.CLIENT
619
if gnutls.check_version(b"3.5.6"):
620
gnutls_flags |= gnutls.NO_TICKETS
621
if gnutls.has_rawpk:
622
gnutls_flags |= gnutls.ENABLE_RAWPK
623
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
624
del gnutls_flags
625
gnutls.set_default_priority(self._c_object)
626
gnutls.transport_set_ptr(self._c_object, socket.fileno())
627
gnutls.handshake_set_private_extensions(self._c_object,
628
True)
629
self.socket = socket
630
if credentials is None:
631
credentials = gnutls.Credentials()
632
gnutls.credentials_set(self._c_object, credentials.type,
633
ctypes.cast(credentials._c_object,
634
ctypes.c_void_p))
635
self.credentials = credentials
636
637
def __del__(self):
638
gnutls.deinit(self._c_object)
639
640
def handshake(self):
641
return gnutls.handshake(self._c_object)
642
643
def send(self, data):
644
data = bytes(data)
645
data_len = len(data)
646
while data_len > 0:
647
data_len -= gnutls.record_send(self._c_object,
648
data[-data_len:],
649
data_len)
650
651
def bye(self):
652
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
653
654
# Error handling functions
655
def _error_code(result):
656
"""A function to raise exceptions on errors, suitable
657
for the 'restype' attribute on ctypes functions"""
658
if result >= 0:
659
return result
660
if result == gnutls.E_NO_CERTIFICATE_FOUND:
661
raise gnutls.CertificateSecurityError(code=result)
662
raise gnutls.Error(code=result)
663
664
def _retry_on_error(result, func, arguments):
665
"""A function to retry on some errors, suitable
666
for the 'errcheck' attribute on ctypes functions"""
667
while result < 0:
668
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
669
return _error_code(result)
670
result = func(*arguments)
671
return result
672
673
# Unless otherwise indicated, the function declarations below are
674
# all from the gnutls/gnutls.h C header file.
675
676
# Functions
677
priority_set_direct = _library.gnutls_priority_set_direct
678
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
679
ctypes.POINTER(ctypes.c_char_p)]
680
priority_set_direct.restype = _error_code
681
682
init = _library.gnutls_init
683
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
684
init.restype = _error_code
685
686
set_default_priority = _library.gnutls_set_default_priority
687
set_default_priority.argtypes = [session_t]
688
set_default_priority.restype = _error_code
689
690
record_send = _library.gnutls_record_send
691
record_send.argtypes = [session_t, ctypes.c_void_p,
692
ctypes.c_size_t]
693
record_send.restype = ctypes.c_ssize_t
694
record_send.errcheck = _retry_on_error
695
696
certificate_allocate_credentials = (
697
_library.gnutls_certificate_allocate_credentials)
698
certificate_allocate_credentials.argtypes = [
699
ctypes.POINTER(certificate_credentials_t)]
700
certificate_allocate_credentials.restype = _error_code
701
702
certificate_free_credentials = (
703
_library.gnutls_certificate_free_credentials)
704
certificate_free_credentials.argtypes = [
705
certificate_credentials_t]
706
certificate_free_credentials.restype = None
707
708
handshake_set_private_extensions = (
709
_library.gnutls_handshake_set_private_extensions)
710
handshake_set_private_extensions.argtypes = [session_t,
711
ctypes.c_int]
712
handshake_set_private_extensions.restype = None
713
714
credentials_set = _library.gnutls_credentials_set
715
credentials_set.argtypes = [session_t, credentials_type_t,
716
ctypes.c_void_p]
717
credentials_set.restype = _error_code
718
719
strerror = _library.gnutls_strerror
720
strerror.argtypes = [ctypes.c_int]
721
strerror.restype = ctypes.c_char_p
722
723
certificate_type_get = _library.gnutls_certificate_type_get
724
certificate_type_get.argtypes = [session_t]
725
certificate_type_get.restype = _error_code
726
727
certificate_get_peers = _library.gnutls_certificate_get_peers
728
certificate_get_peers.argtypes = [session_t,
729
ctypes.POINTER(ctypes.c_uint)]
730
certificate_get_peers.restype = ctypes.POINTER(datum_t)
731
732
global_set_log_level = _library.gnutls_global_set_log_level
733
global_set_log_level.argtypes = [ctypes.c_int]
734
global_set_log_level.restype = None
735
736
global_set_log_function = _library.gnutls_global_set_log_function
737
global_set_log_function.argtypes = [log_func]
738
global_set_log_function.restype = None
739
740
deinit = _library.gnutls_deinit
741
deinit.argtypes = [session_t]
742
deinit.restype = None
743
744
handshake = _library.gnutls_handshake
745
handshake.argtypes = [session_t]
746
handshake.restype = _error_code
747
handshake.errcheck = _retry_on_error
748
749
transport_set_ptr = _library.gnutls_transport_set_ptr
750
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
751
transport_set_ptr.restype = None
752
753
bye = _library.gnutls_bye
754
bye.argtypes = [session_t, close_request_t]
755
bye.restype = _error_code
756
bye.errcheck = _retry_on_error
757
758
check_version = _library.gnutls_check_version
759
check_version.argtypes = [ctypes.c_char_p]
760
check_version.restype = ctypes.c_char_p
761
762
_need_version = b"3.3.0"
763
if check_version(_need_version) is None:
764
raise self.Error("Needs GnuTLS {} or later"
765
.format(_need_version))
766
767
_tls_rawpk_version = b"3.6.6"
768
has_rawpk = bool(check_version(_tls_rawpk_version))
769
770
if has_rawpk:
771
# Types
772
class pubkey_st(ctypes.Structure):
773
_fields = []
774
pubkey_t = ctypes.POINTER(pubkey_st)
775
776
x509_crt_fmt_t = ctypes.c_int
777
778
# All the function declarations below are from
779
# gnutls/abstract.h
780
pubkey_init = _library.gnutls_pubkey_init
781
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
782
pubkey_init.restype = _error_code
783
784
pubkey_import = _library.gnutls_pubkey_import
785
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
786
x509_crt_fmt_t]
787
pubkey_import.restype = _error_code
788
789
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
790
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
791
ctypes.POINTER(ctypes.c_ubyte),
792
ctypes.POINTER(ctypes.c_size_t)]
793
pubkey_get_key_id.restype = _error_code
794
795
pubkey_deinit = _library.gnutls_pubkey_deinit
796
pubkey_deinit.argtypes = [pubkey_t]
797
pubkey_deinit.restype = None
798
else:
799
# All the function declarations below are from
800
# gnutls/openpgp.h
801
802
openpgp_crt_init = _library.gnutls_openpgp_crt_init
803
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
804
openpgp_crt_init.restype = _error_code
805
806
openpgp_crt_import = _library.gnutls_openpgp_crt_import
807
openpgp_crt_import.argtypes = [openpgp_crt_t,
808
ctypes.POINTER(datum_t),
809
openpgp_crt_fmt_t]
810
openpgp_crt_import.restype = _error_code
811
812
openpgp_crt_verify_self = \
813
_library.gnutls_openpgp_crt_verify_self
814
openpgp_crt_verify_self.argtypes = [
815
openpgp_crt_t,
816
ctypes.c_uint,
817
ctypes.POINTER(ctypes.c_uint),
818
]
819
openpgp_crt_verify_self.restype = _error_code
820
821
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
822
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
823
openpgp_crt_deinit.restype = None
824
825
openpgp_crt_get_fingerprint = (
826
_library.gnutls_openpgp_crt_get_fingerprint)
827
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
828
ctypes.c_void_p,
829
ctypes.POINTER(
830
ctypes.c_size_t)]
831
openpgp_crt_get_fingerprint.restype = _error_code
832
833
if check_version(b"3.6.4"):
834
certificate_type_get2 = _library.gnutls_certificate_type_get2
835
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
836
certificate_type_get2.restype = _error_code
837
838
# Remove non-public functions
839
del _error_code, _retry_on_error
840
841
842
def call_pipe(connection, # : multiprocessing.Connection
843
func, *args, **kwargs):
844
"""This function is meant to be called by multiprocessing.Process
845
846
This function runs func(*args, **kwargs), and writes the resulting
847
return value on the provided multiprocessing.Connection.
848
"""
849
connection.send(func(*args, **kwargs))
850
connection.close()
851
852
853
class Client:
240
class Client(object):
854
241
"""A representation of a client host served by this server.
855
242
856
243
Attributes:
857
approved: bool(); 'None' if not yet approved/disapproved
244
_approved: bool(); 'None' if not yet approved/disapproved
858
245
approval_delay: datetime.timedelta(); Time to wait for approval
859
246
approval_duration: datetime.timedelta(); Duration of one approval
860
checker: multiprocessing.Process(); a running checker process used
861
to see if the client lives. 'None' if no process is
862
running.
863
checker_callback_tag: a GLib event source tag, or None
247
checker: subprocess.Popen(); a running checker process used
248
to see if the client lives.
249
'None' if no process is running.
250
checker_callback_tag: a gobject event source tag, or None
864
251
checker_command: string; External command which is run to check
865
252
if client lives. %() expansions are done at
866
253
runtime with vars(self) as dict, so that for
867
254
instance %(name)s can be used in the command.
868
checker_initiator_tag: a GLib event source tag, or None
255
checker_initiator_tag: a gobject event source tag, or None
869
256
created: datetime.datetime(); (UTC) object creation
870
client_structure: Object describing what attributes a client has
871
and is used for storing the client at exit
872
257
current_checker_command: string; current running checker_command
873
disable_initiator_tag: a GLib event source tag, or None
258
disable_hook: If set, called by disable() as disable_hook(self)
259
disable_initiator_tag: a gobject event source tag, or None
874
260
enabled: bool()
875
261
fingerprint: string (40 or 32 hexadecimal digits); used to
876
uniquely identify an OpenPGP client
877
key_id: string (64 hexadecimal digits); used to uniquely identify
878
a client using raw public keys
262
uniquely identify the client
879
263
host: string; available for use by the checker command
880
264
interval: datetime.timedelta(); How often to start a new checker
881
265
last_approval_request: datetime.datetime(); (UTC) or None
882
266
last_checked_ok: datetime.datetime(); (UTC) or None
883
last_checker_status: integer between 0 and 255 reflecting exit
884
status of last checker. -1 reflects crashed
885
checker, -2 means no checker completed yet.
886
last_checker_signal: The signal which killed the last checker, if
887
last_checker_status is -1
888
last_enabled: datetime.datetime(); (UTC) or None
267
last_enabled: datetime.datetime(); (UTC)
889
268
name: string; from the config file, used in log messages and
890
269
D-Bus identifiers
891
270
secret: bytestring; sent verbatim (over TLS) to client
892
271
timeout: datetime.timedelta(); How long from last_checked_ok
893
272
until this client is disabled
894
extended_timeout: extra long timeout when secret has been sent
895
273
runtime_expansions: Allowed attributes for runtime expansion.
896
expires: datetime.datetime(); time (UTC) when a client will be
897
disabled, or None
898
server_settings: The server_settings dict from main()
899
274
"""
900
275
901
276
runtime_expansions = ("approval_delay", "approval_duration",
902
"created", "enabled", "expires", "key_id",
903
"fingerprint", "host", "interval",
904
"last_approval_request", "last_checked_ok",
277
"created", "enabled", "fingerprint",
278
"host", "interval", "last_checked_ok",
905
279
"last_enabled", "name", "timeout")
906
client_defaults = {
907
"timeout": "PT5M",
908
"extended_timeout": "PT15M",
909
"interval": "PT2M",
910
"checker": "fping -q -- %%(host)s",
911
"host": "",
912
"approval_delay": "PT0S",
913
"approval_duration": "PT1S",
914
"approved_by_default": "True",
915
"enabled": "True",
916
}
917
280
918
281
@staticmethod
919
def config_parser(config):
920
"""Construct a new dict of client settings of this form:
921
{ client_name: {setting_name: value, ...}, ...}
922
with exceptions for any special settings as defined above.
923
NOTE: Must be a pure function. Must return the same result
924
value given the same arguments.
925
"""
926
settings = {}
927
for client_name in config.sections():
928
section = dict(config.items(client_name))
929
client = settings[client_name] = {}
930
931
client["host"] = section["host"]
932
# Reformat values from string types to Python types
933
client["approved_by_default"] = config.getboolean(
934
client_name, "approved_by_default")
935
client["enabled"] = config.getboolean(client_name,
936
"enabled")
937
938
# Uppercase and remove spaces from key_id and fingerprint
939
# for later comparison purposes with return value from the
940
# key_id() and fingerprint() functions
941
client["key_id"] = (section.get("key_id", "").upper()
942
.replace(" ", ""))
943
client["fingerprint"] = (section["fingerprint"].upper()
944
.replace(" ", ""))
945
if "secret" in section:
946
client["secret"] = codecs.decode(section["secret"]
947
.encode("utf-8"),
948
"base64")
949
elif "secfile" in section:
950
with open(os.path.expanduser(os.path.expandvars
951
(section["secfile"])),
952
"rb") as secfile:
953
client["secret"] = secfile.read()
954
else:
955
raise TypeError("No secret or secfile for section {}"
956
.format(section))
957
client["timeout"] = string_to_delta(section["timeout"])
958
client["extended_timeout"] = string_to_delta(
959
section["extended_timeout"])
960
client["interval"] = string_to_delta(section["interval"])
961
client["approval_delay"] = string_to_delta(
962
section["approval_delay"])
963
client["approval_duration"] = string_to_delta(
964
section["approval_duration"])
965
client["checker_command"] = section["checker"]
966
client["last_approval_request"] = None
967
client["last_checked_ok"] = None
968
client["last_checker_status"] = -2
969
970
return settings
971
972
def __init__(self, settings, name=None, server_settings=None):
282
def _timedelta_to_milliseconds(td):
283
"Convert a datetime.timedelta() to milliseconds"
284
return ((td.days * 24 * 60 * 60 * 1000)
285
+ (td.seconds * 1000)
286
+ (td.microseconds // 1000))
287
288
def timeout_milliseconds(self):
289
"Return the 'timeout' attribute in milliseconds"
290
return self._timedelta_to_milliseconds(self.timeout)
291
292
def interval_milliseconds(self):
293
"Return the 'interval' attribute in milliseconds"
294
return self._timedelta_to_milliseconds(self.interval)
295
296
def approval_delay_milliseconds(self):
297
return self._timedelta_to_milliseconds(self.approval_delay)
298
299
def __init__(self, name = None, disable_hook=None, config=None):
300
"""Note: the 'checker' key in 'config' sets the
301
'checker_command' attribute and *not* the 'checker'
302
attribute."""
973
303
self.name = name
974
if server_settings is None:
975
server_settings = {}
976
self.server_settings = server_settings
977
# adding all client settings
978
for setting, value in settings.items():
979
setattr(self, setting, value)
980
981
if self.enabled:
982
if not hasattr(self, "last_enabled"):
983
self.last_enabled = datetime.datetime.utcnow()
984
if not hasattr(self, "expires"):
985
self.expires = (datetime.datetime.utcnow()
986
+ self.timeout)
987
else:
988
self.last_enabled = None
989
self.expires = None
990
304
if config is None:
305
config = {}
991
306
logger.debug("Creating client %r", self.name)
992
logger.debug(" Key ID: %s", self.key_id)
307
# Uppercase and remove spaces from fingerprint for later
308
# comparison purposes with return value from the fingerprint()
309
# function
310
self.fingerprint = (config["fingerprint"].upper()
311
.replace(" ", ""))
993
312
logger.debug(" Fingerprint: %s", self.fingerprint)
994
self.created = settings.get("created",
995
datetime.datetime.utcnow())
996
997
# attributes specific for this server instance
313
if "secret" in config:
314
self.secret = config["secret"].decode("base64")
315
elif "secfile" in config:
316
with open(os.path.expanduser(os.path.expandvars
317
(config["secfile"])),
318
"rb") as secfile:
319
self.secret = secfile.read()
320
else:
321
raise TypeError("No secret or secfile for client %s"
322
% self.name)
323
self.host = config.get("host", "")
324
self.created = datetime.datetime.utcnow()
325
self.enabled = False
326
self.last_approval_request = None
327
self.last_enabled = None
328
self.last_checked_ok = None
329
self.timeout = string_to_delta(config["timeout"])
330
self.interval = string_to_delta(config["interval"])
331
self.disable_hook = disable_hook
998
332
self.checker = None
999
333
self.checker_initiator_tag = None
1000
334
self.disable_initiator_tag = None
1001
335
self.checker_callback_tag = None
336
self.checker_command = config["checker"]
1002
337
self.current_checker_command = None
1003
self.approved = None
338
self.last_connect = None
339
self._approved = None
340
self.approved_by_default = config.get("approved_by_default",
341
True)
1004
342
self.approvals_pending = 0
1005
self.changedstate = multiprocessing_manager.Condition(
1006
multiprocessing_manager.Lock())
1007
self.client_structure = [attr
1008
for attr in self.__dict__.keys()
1009
if not attr.startswith("_")]
1010
self.client_structure.append("client_structure")
1011
1012
for name, t in inspect.getmembers(
1013
type(self), lambda obj: isinstance(obj, property)):
1014
if not name.startswith("_"):
1015
self.client_structure.append(name)
1016
1017
# Send notice to process children that client state has changed
343
self.approval_delay = string_to_delta(
344
config["approval_delay"])
345
self.approval_duration = string_to_delta(
346
config["approval_duration"])
347
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
348
1018
349
def send_changedstate(self):
1019
with self.changedstate:
1020
self.changedstate.notify_all()
1021
350
self.changedstate.acquire()
351
self.changedstate.notify_all()
352
self.changedstate.release()
353
1022
354
def enable(self):
1023
355
"""Start this client's checker and timeout hooks"""
1024
356
if getattr(self, "enabled", False):
1025
357
# Already enabled
1026
358
return
1027
self.expires = datetime.datetime.utcnow() + self.timeout
1028
self.enabled = True
359
self.send_changedstate()
1029
360
self.last_enabled = datetime.datetime.utcnow()
1030
self.init_checker()
1031
self.send_changedstate()
1032
361
# Schedule a new checker to be started an 'interval' from now,
362
# and every interval from then on.
363
self.checker_initiator_tag = (gobject.timeout_add
364
(self.interval_milliseconds(),
365
self.start_checker))
366
# Schedule a disable() when 'timeout' has passed
367
self.disable_initiator_tag = (gobject.timeout_add
368
(self.timeout_milliseconds(),
369
self.disable))
370
self.enabled = True
371
# Also start a new checker *right now*.
372
self.start_checker()
373
1033
374
def disable(self, quiet=True):
1034
375
"""Disable this client."""
1035
376
if not getattr(self, "enabled", False):
1036
377
return False
1037
378
if not quiet:
379
self.send_changedstate()
380
if not quiet:
1038
381
logger.info("Disabling client %s", self.name)
1039
if getattr(self, "disable_initiator_tag", None) is not None:
1040
GLib.source_remove(self.disable_initiator_tag)
382
if getattr(self, "disable_initiator_tag", False):
383
gobject.source_remove(self.disable_initiator_tag)
1041
384
self.disable_initiator_tag = None
1042
self.expires = None
1043
if getattr(self, "checker_initiator_tag", None) is not None:
1044
GLib.source_remove(self.checker_initiator_tag)
385
if getattr(self, "checker_initiator_tag", False):
386
gobject.source_remove(self.checker_initiator_tag)
1045
387
self.checker_initiator_tag = None
1046
388
self.stop_checker()
389
if self.disable_hook:
390
self.disable_hook(self)
1047
391
self.enabled = False
1048
if not quiet:
1049
self.send_changedstate()
1050
# Do not run this again if called by a GLib.timeout_add
392
# Do not run this again if called by a gobject.timeout_add
1051
393
return False
1052
394
1053
395
def __del__(self):
396
self.disable_hook = None
1054
397
self.disable()
1055
1056
def init_checker(self):
1057
# Schedule a new checker to be started an 'interval' from now,
1058
# and every interval from then on.
1059
if self.checker_initiator_tag is not None:
1060
GLib.source_remove(self.checker_initiator_tag)
1061
self.checker_initiator_tag = GLib.timeout_add(
1062
random.randrange(int(self.interval.total_seconds() * 1000
1063
+ 1)),
1064
self.start_checker)
1065
# Schedule a disable() when 'timeout' has passed
1066
if self.disable_initiator_tag is not None:
1067
GLib.source_remove(self.disable_initiator_tag)
1068
self.disable_initiator_tag = GLib.timeout_add(
1069
int(self.timeout.total_seconds() * 1000), self.disable)
1070
# Also start a new checker *right now*.
1071
self.start_checker()
1072
1073
def checker_callback(self, source, condition, connection,
1074
command):
398
399
def checker_callback(self, pid, condition, command):
1075
400
"""The checker has completed, so take appropriate actions."""
1076
# Read return code from connection (see call_pipe)
1077
returncode = connection.recv()
1078
connection.close()
1079
if self.checker is not None:
1080
self.checker.join()
1081
401
self.checker_callback_tag = None
1082
402
self.checker = None
1083
1084
if returncode >= 0:
1085
self.last_checker_status = returncode
1086
self.last_checker_signal = None
1087
if self.last_checker_status == 0:
403
if os.WIFEXITED(condition):
404
exitstatus = os.WEXITSTATUS(condition)
405
if exitstatus == 0:
1088
406
logger.info("Checker for %(name)s succeeded",
1089
407
vars(self))
1090
408
self.checked_ok()
1091
409
else:
1092
logger.info("Checker for %(name)s failed", vars(self))
410
logger.info("Checker for %(name)s failed",
411
vars(self))
1093
412
else:
1094
self.last_checker_status = -1
1095
self.last_checker_signal = -returncode
1096
413
logger.warning("Checker for %(name)s crashed?",
1097
414
vars(self))
1098
return False
1099
415
1100
416
def checked_ok(self):
1101
"""Assert that the client has been seen, alive and well."""
417
"""Bump up the timeout for this client.
418
419
This should only be called when the client has been seen,
420
alive and well.
421
"""
1102
422
self.last_checked_ok = datetime.datetime.utcnow()
1103
self.last_checker_status = 0
1104
self.last_checker_signal = None
1105
self.bump_timeout()
1106
1107
def bump_timeout(self, timeout=None):
1108
"""Bump up the timeout for this client."""
1109
if timeout is None:
1110
timeout = self.timeout
1111
if self.disable_initiator_tag is not None:
1112
GLib.source_remove(self.disable_initiator_tag)
1113
self.disable_initiator_tag = None
1114
if getattr(self, "enabled", False):
1115
self.disable_initiator_tag = GLib.timeout_add(
1116
int(timeout.total_seconds() * 1000), self.disable)
1117
self.expires = datetime.datetime.utcnow() + timeout
1118
423
gobject.source_remove(self.disable_initiator_tag)
424
self.disable_initiator_tag = (gobject.timeout_add
425
(self.timeout_milliseconds(),
426
self.disable))
427
1119
428
def need_approval(self):
1120
429
self.last_approval_request = datetime.datetime.utcnow()
1121
430
1122
431
def start_checker(self):
1123
432
"""Start a new checker subprocess if one is not running.
1124
433
1125
434
If a checker already exists, leave it running and do
1126
435
nothing."""
1127
436
# The reason for not killing a running checker is that if we
1128
# did that, and if a checker (for some reason) started running
1129
# slowly and taking more than 'interval' time, then the client
1130
# would inevitably timeout, since no checker would get a
1131
# chance to run to completion. If we instead leave running
437
# did that, then if a checker (for some reason) started
438
# running slowly and taking more than 'interval' time, the
439
# client would inevitably timeout, since no checker would get
440
# a chance to run to completion. If we instead leave running
1132
441
# checkers alone, the checker would have to take more time
1133
442
# than 'timeout' for the client to be disabled, which is as it
1134
443
# should be.
1135
1136
if self.checker is not None and not self.checker.is_alive():
1137
logger.warning("Checker was not alive; joining")
1138
self.checker.join()
1139
self.checker = None
444
445
# If a checker exists, make sure it is not a zombie
446
try:
447
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
448
except (AttributeError, OSError), error:
449
if (isinstance(error, OSError)
450
and error.errno != errno.ECHILD):
451
raise error
452
else:
453
if pid:
454
logger.warning("Checker was a zombie")
455
gobject.source_remove(self.checker_callback_tag)
456
self.checker_callback(pid, status,
457
self.current_checker_command)
1140
458
# Start a new checker if needed
1141
459
if self.checker is None:
1142
# Escape attributes for the shell
1143
escaped_attrs = {
1144
attr: shlex.quote(str(getattr(self, attr)))
1145
for attr in self.runtime_expansions}
1146
460
try:
1147
command = self.checker_command % escaped_attrs
1148
except TypeError as error:
1149
logger.error('Could not format string "%s"',
1150
self.checker_command,
1151
exc_info=error)
1152
return True # Try again later
461
# In case checker_command has exactly one % operator
462
command = self.checker_command % self.host
463
except TypeError:
464
# Escape attributes for the shell
465
escaped_attrs = dict(
466
(attr,
467
re.escape(unicode(str(getattr(self, attr, "")),
468
errors=
469
'replace')))
470
for attr in
471
self.runtime_expansions)
472
473
try:
474
command = self.checker_command % escaped_attrs
475
except TypeError, error:
476
logger.error('Could not format string "%s":'
477
' %s', self.checker_command, error)
478
return True # Try again later
1153
479
self.current_checker_command = command
1154
logger.info("Starting checker %r for %s", command,
1155
self.name)
1156
# We don't need to redirect stdout and stderr, since
1157
# in normal mode, that is already done by daemon(),
1158
# and in debug mode we don't want to. (Stdin is
1159
# always replaced by /dev/null.)
1160
# The exception is when not debugging but nevertheless
1161
# running in the foreground; use the previously
1162
# created wnull.
1163
popen_args = {"close_fds": True,
1164
"shell": True,
1165
"cwd": "/"}
1166
if (not self.server_settings["debug"]
1167
and self.server_settings["foreground"]):
1168
popen_args.update({"stdout": wnull,
1169
"stderr": wnull})
1170
pipe = multiprocessing.Pipe(duplex=False)
1171
self.checker = multiprocessing.Process(
1172
target=call_pipe,
1173
args=(pipe[1], subprocess.call, command),
1174
kwargs=popen_args)
1175
self.checker.start()
1176
self.checker_callback_tag = GLib.io_add_watch(
1177
GLib.IOChannel.unix_new(pipe[0].fileno()),
1178
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1179
self.checker_callback, pipe[0], command)
1180
# Re-run this periodically if run by GLib.timeout_add
480
try:
481
logger.info("Starting checker %r for %s",
482
command, self.name)
483
# We don't need to redirect stdout and stderr, since
484
# in normal mode, that is already done by daemon(),
485
# and in debug mode we don't want to. (Stdin is
486
# always replaced by /dev/null.)
487
self.checker = subprocess.Popen(command,
488
close_fds=True,
489
shell=True, cwd="/")
490
self.checker_callback_tag = (gobject.child_watch_add
491
(self.checker.pid,
492
self.checker_callback,
493
data=command))
494
# The checker may have completed before the gobject
495
# watch was added. Check for this.
496
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
497
if pid:
498
gobject.source_remove(self.checker_callback_tag)
499
self.checker_callback(pid, status, command)
500
except OSError, error:
501
logger.error("Failed to start subprocess: %s",
502
error)
503
# Re-run this periodically if run by gobject.timeout_add
1181
504
return True
1182
505
1183
506
def stop_checker(self):
1184
507
"""Force the checker process, if any, to stop."""
1185
508
if self.checker_callback_tag:
1186
GLib.source_remove(self.checker_callback_tag)
509
gobject.source_remove(self.checker_callback_tag)
1187
510
self.checker_callback_tag = None
1188
511
if getattr(self, "checker", None) is None:
1189
512
return
1190
513
logger.debug("Stopping checker for %(name)s", vars(self))
1191
self.checker.terminate()
514
try:
515
os.kill(self.checker.pid, signal.SIGTERM)
516
#time.sleep(0.5)
517
#if self.checker.poll() is None:
518
# os.kill(self.checker.pid, signal.SIGKILL)
519
except OSError, error:
520
if error.errno != errno.ESRCH: # No such process
521
raise
1192
522
self.checker = None
1193
523
1194
1195
def dbus_service_property(dbus_interface,
1196
signature="v",
1197
access="readwrite",
1198
byte_arrays=False):
524
def dbus_service_property(dbus_interface, signature="v",
525
access="readwrite", byte_arrays=False):
1199
526
"""Decorators for marking methods of a DBusObjectWithProperties to
1200
527
become properties on the D-Bus.
1201
528
1202
529
The decorated method will be called with no arguments by "Get"
1203
530
and with one argument by "Set".
1204
531
1205
532
The parameters, where they are supported, are the same as
1206
533
dbus.service.method, except there is only "signature", since the
1207
534
type from Get() and the type sent to Set() is the same.
1210
537
# "Set" method, so we fail early here:
1211
538
if byte_arrays and signature != "ay":
1212
539
raise ValueError("Byte arrays not supported for non-'ay'"
1213
" signature {!r}".format(signature))
1214
540
" signature %r" % signature)
1215
541
def decorator(func):
1216
542
func._dbus_is_property = True
1217
543
func._dbus_interface = dbus_interface
1220
546
func._dbus_name = func.__name__
1221
547
if func._dbus_name.endswith("_dbus_property"):
1222
548
func._dbus_name = func._dbus_name[:-14]
1223
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1224
return func
1225
1226
return decorator
1227
1228
1229
def dbus_interface_annotations(dbus_interface):
1230
"""Decorator for marking functions returning interface annotations
1231
1232
Usage:
1233
1234
@dbus_interface_annotations("org.example.Interface")
1235
def _foo(self): # Function name does not matter
1236
return {"org.freedesktop.DBus.Deprecated": "true",
1237
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1238
"false"}
1239
"""
1240
1241
def decorator(func):
1242
func._dbus_is_interface = True
1243
func._dbus_interface = dbus_interface
1244
func._dbus_name = dbus_interface
1245
return func
1246
1247
return decorator
1248
1249
1250
def dbus_annotations(annotations):
1251
"""Decorator to annotate D-Bus methods, signals or properties
1252
Usage:
1253
1254
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1255
"org.freedesktop.DBus.Property."
1256
"EmitsChangedSignal": "false"})
1257
@dbus_service_property("org.example.Interface", signature="b",
1258
access="r")
1259
def Property_dbus_property(self):
1260
return dbus.Boolean(False)
1261
1262
See also the DBusObjectWithAnnotations class.
1263
"""
1264
1265
def decorator(func):
1266
func._dbus_annotations = annotations
1267
return func
1268
549
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
550
return func
1269
551
return decorator
1270
552
1271
553
1272
554
class DBusPropertyException(dbus.exceptions.DBusException):
1273
555
"""A base class for D-Bus property-related exceptions
1274
556
"""
1275
pass
557
def __unicode__(self):
558
return unicode(str(self))
1276
559
1277
560
1278
561
class DBusPropertyAccessException(DBusPropertyException):
1287
570
pass
1288
571
1289
572
1290
class DBusObjectWithAnnotations(dbus.service.Object):
1291
"""A D-Bus object with annotations.
1292
1293
Classes inheriting from this can use the dbus_annotations
1294
decorator to add annotations to methods or signals.
1295
"""
1296
1297
@staticmethod
1298
def _is_dbus_thing(thing):
1299
"""Returns a function testing if an attribute is a D-Bus thing
1300
1301
If called like _is_dbus_thing("method") it returns a function
1302
suitable for use as predicate to inspect.getmembers().
1303
"""
1304
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1305
False)
1306
1307
def _get_all_dbus_things(self, thing):
1308
"""Returns a generator of (name, attribute) pairs
1309
"""
1310
return ((getattr(athing.__get__(self), "_dbus_name", name),
1311
athing.__get__(self))
1312
for cls in self.__class__.__mro__
1313
for name, athing in
1314
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1315
1316
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1317
out_signature="s",
1318
path_keyword='object_path',
1319
connection_keyword='connection')
1320
def Introspect(self, object_path, connection):
1321
"""Overloading of standard D-Bus method.
1322
1323
Inserts annotation tags on methods and signals.
1324
"""
1325
xmlstring = dbus.service.Object.Introspect(self, object_path,
1326
connection)
1327
try:
1328
document = xml.dom.minidom.parseString(xmlstring)
1329
1330
for if_tag in document.getElementsByTagName("interface"):
1331
# Add annotation tags
1332
for typ in ("method", "signal"):
1333
for tag in if_tag.getElementsByTagName(typ):
1334
annots = dict()
1335
for name, prop in (self.
1336
_get_all_dbus_things(typ)):
1337
if (name == tag.getAttribute("name")
1338
and prop._dbus_interface
1339
== if_tag.getAttribute("name")):
1340
annots.update(getattr(
1341
prop, "_dbus_annotations", {}))
1342
for name, value in annots.items():
1343
ann_tag = document.createElement(
1344
"annotation")
1345
ann_tag.setAttribute("name", name)
1346
ann_tag.setAttribute("value", value)
1347
tag.appendChild(ann_tag)
1348
# Add interface annotation tags
1349
for annotation, value in dict(
1350
itertools.chain.from_iterable(
1351
annotations().items()
1352
for name, annotations
1353
in self._get_all_dbus_things("interface")
1354
if name == if_tag.getAttribute("name")
1355
)).items():
1356
ann_tag = document.createElement("annotation")
1357
ann_tag.setAttribute("name", annotation)
1358
ann_tag.setAttribute("value", value)
1359
if_tag.appendChild(ann_tag)
1360
# Fix argument name for the Introspect method itself
1361
if (if_tag.getAttribute("name")
1362
== dbus.INTROSPECTABLE_IFACE):
1363
for cn in if_tag.getElementsByTagName("method"):
1364
if cn.getAttribute("name") == "Introspect":
1365
for arg in cn.getElementsByTagName("arg"):
1366
if (arg.getAttribute("direction")
1367
== "out"):
1368
arg.setAttribute("name",
1369
"xml_data")
1370
xmlstring = document.toxml("utf-8")
1371
document.unlink()
1372
except (AttributeError, xml.dom.DOMException,
1373
xml.parsers.expat.ExpatError) as error:
1374
logger.error("Failed to override Introspection method",
1375
exc_info=error)
1376
return xmlstring
1377
1378
1379
class DBusObjectWithProperties(DBusObjectWithAnnotations):
573
class DBusObjectWithProperties(dbus.service.Object):
1380
574
"""A D-Bus object with properties.
1381
575
1382
576
Classes inheriting from this can use the dbus_service_property
1383
577
decorator to expose methods as D-Bus properties. It exposes the
1384
578
standard Get(), Set(), and GetAll() methods on the D-Bus.
1385
579
"""
1386
580
581
@staticmethod
582
def _is_dbus_property(obj):
583
return getattr(obj, "_dbus_is_property", False)
584
585
def _get_all_dbus_properties(self):
586
"""Returns a generator of (name, attribute) pairs
587
"""
588
return ((prop._dbus_name, prop)
589
for name, prop in
590
inspect.getmembers(self, self._is_dbus_property))
591
1387
592
def _get_dbus_property(self, interface_name, property_name):
1388
593
"""Returns a bound method if one exists which is a D-Bus
1389
594
property with the specified name and interface.
1390
595
"""
1391
for cls in self.__class__.__mro__:
1392
for name, value in inspect.getmembers(
1393
cls, self._is_dbus_thing("property")):
1394
if (value._dbus_name == property_name
1395
and value._dbus_interface == interface_name):
1396
return value.__get__(self)
1397
596
for name in (property_name,
597
property_name + "_dbus_property"):
598
prop = getattr(self, name, None)
599
if (prop is None
600
or not self._is_dbus_property(prop)
601
or prop._dbus_name != property_name
602
or (interface_name and prop._dbus_interface
603
and interface_name != prop._dbus_interface)):
604
continue
605
return prop
1398
606
# No such property
1399
raise DBusPropertyNotFound("{}:{}.{}".format(
1400
self.dbus_object_path, interface_name, property_name))
1401
1402
@classmethod
1403
def _get_all_interface_names(cls):
1404
"""Get a sequence of all interfaces supported by an object"""
1405
return (name for name in set(getattr(getattr(x, attr),
1406
"_dbus_interface", None)
1407
for x in (inspect.getmro(cls))
1408
for attr in dir(x))
1409
if name is not None)
1410
1411
@dbus.service.method(dbus.PROPERTIES_IFACE,
1412
in_signature="ss",
607
raise DBusPropertyNotFound(self.dbus_object_path + ":"
608
+ interface_name + "."
609
+ property_name)
610
611
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1413
612
out_signature="v")
1414
613
def Get(self, interface_name, property_name):
1415
614
"""Standard D-Bus property Get() method, see D-Bus standard.
1421
620
if not hasattr(value, "variant_level"):
1422
621
return value
1423
622
return type(value)(value, variant_level=value.variant_level+1)
1424
623
1425
624
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1426
625
def Set(self, interface_name, property_name, value):
1427
626
"""Standard D-Bus property Set() method, see D-Bus standard.
1433
632
# The byte_arrays option is not supported yet on
1434
633
# signatures other than "ay".
1435
634
if prop._dbus_signature != "ay":
1436
raise ValueError("Byte arrays not supported for non-"
1437
"'ay' signature {!r}"
1438
.format(prop._dbus_signature))
1439
value = dbus.ByteArray(bytes(value))
635
raise ValueError
636
value = dbus.ByteArray(''.join(unichr(byte)
637
for byte in value))
1440
638
prop(value)
1441
1442
@dbus.service.method(dbus.PROPERTIES_IFACE,
1443
in_signature="s",
639
640
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1444
641
out_signature="a{sv}")
1445
642
def GetAll(self, interface_name):
1446
643
"""Standard D-Bus property GetAll() method, see D-Bus
1448
645
1449
646
Note: Will not include properties with access="write".
1450
647
"""
1451
properties = {}
1452
for name, prop in self._get_all_dbus_things("property"):
648
all = {}
649
for name, prop in self._get_all_dbus_properties():
1453
650
if (interface_name
1454
651
and interface_name != prop._dbus_interface):
1455
652
# Interface non-empty but did not match
1459
656
continue
1460
657
value = prop()
1461
658
if not hasattr(value, "variant_level"):
1462
properties[name] = value
659
all[name] = value
1463
660
continue
1464
properties[name] = type(value)(
1465
value, variant_level=value.variant_level + 1)
1466
return dbus.Dictionary(properties, signature="sv")
1467
1468
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1469
def PropertiesChanged(self, interface_name, changed_properties,
1470
invalidated_properties):
1471
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1472
standard.
1473
"""
1474
pass
1475
661
all[name] = type(value)(value, variant_level=
662
value.variant_level+1)
663
return dbus.Dictionary(all, signature="sv")
664
1476
665
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1477
666
out_signature="s",
1478
667
path_keyword='object_path',
1479
668
connection_keyword='connection')
1480
669
def Introspect(self, object_path, connection):
1481
"""Overloading of standard D-Bus method.
1482
1483
Inserts property tags and interface annotation tags.
670
"""Standard D-Bus method, overloaded to insert property tags.
1484
671
"""
1485
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1486
object_path,
1487
connection)
672
xmlstring = dbus.service.Object.Introspect(self, object_path,
673
connection)
1488
674
try:
1489
675
document = xml.dom.minidom.parseString(xmlstring)
1490
1491
676
def make_tag(document, name, prop):
1492
677
e = document.createElement("property")
1493
678
e.setAttribute("name", name)
1494
679
e.setAttribute("type", prop._dbus_signature)
1495
680
e.setAttribute("access", prop._dbus_access)
1496
681
return e
1497
1498
682
for if_tag in document.getElementsByTagName("interface"):
1499
# Add property tags
1500
683
for tag in (make_tag(document, name, prop)
1501
684
for name, prop
1502
in self._get_all_dbus_things("property")
685
in self._get_all_dbus_properties()
1503
686
if prop._dbus_interface
1504
687
== if_tag.getAttribute("name")):
1505
688
if_tag.appendChild(tag)
1506
# Add annotation tags for properties
1507
for tag in if_tag.getElementsByTagName("property"):
1508
annots = dict()
1509
for name, prop in self._get_all_dbus_things(
1510
"property"):
1511
if (name == tag.getAttribute("name")
1512
and prop._dbus_interface
1513
== if_tag.getAttribute("name")):
1514
annots.update(getattr(
1515
prop, "_dbus_annotations", {}))
1516
for name, value in annots.items():
1517
ann_tag = document.createElement(
1518
"annotation")
1519
ann_tag.setAttribute("name", name)
1520
ann_tag.setAttribute("value", value)
1521
tag.appendChild(ann_tag)
1522
689
# Add the names to the return values for the
1523
690
# "org.freedesktop.DBus.Properties" methods
1524
691
if (if_tag.getAttribute("name")
1537
704
xmlstring = document.toxml("utf-8")
1538
705
document.unlink()
1539
706
except (AttributeError, xml.dom.DOMException,
1540
xml.parsers.expat.ExpatError) as error:
1541
logger.error("Failed to override Introspection method",
1542
exc_info=error)
1543
return xmlstring
1544
1545
1546
try:
1547
dbus.OBJECT_MANAGER_IFACE
1548
except AttributeError:
1549
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1550
1551
1552
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1553
"""A D-Bus object with an ObjectManager.
1554
1555
Classes inheriting from this exposes the standard
1556
GetManagedObjects call and the InterfacesAdded and
1557
InterfacesRemoved signals on the standard
1558
"org.freedesktop.DBus.ObjectManager" interface.
1559
1560
Note: No signals are sent automatically; they must be sent
1561
manually.
1562
"""
1563
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1564
out_signature="a{oa{sa{sv}}}")
1565
def GetManagedObjects(self):
1566
"""This function must be overridden"""
1567
raise NotImplementedError()
1568
1569
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1570
signature="oa{sa{sv}}")
1571
def InterfacesAdded(self, object_path, interfaces_and_properties):
1572
pass
1573
1574
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1575
def InterfacesRemoved(self, object_path, interfaces):
1576
pass
1577
1578
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1579
out_signature="s",
1580
path_keyword='object_path',
1581
connection_keyword='connection')
1582
def Introspect(self, object_path, connection):
1583
"""Overloading of standard D-Bus method.
1584
1585
Override return argument name of GetManagedObjects to be
1586
"objpath_interfaces_and_properties"
1587
"""
1588
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1589
object_path,
1590
connection)
1591
try:
1592
document = xml.dom.minidom.parseString(xmlstring)
1593
1594
for if_tag in document.getElementsByTagName("interface"):
1595
# Fix argument name for the GetManagedObjects method
1596
if (if_tag.getAttribute("name")
1597
== dbus.OBJECT_MANAGER_IFACE):
1598
for cn in if_tag.getElementsByTagName("method"):
1599
if (cn.getAttribute("name")
1600
== "GetManagedObjects"):
1601
for arg in cn.getElementsByTagName("arg"):
1602
if (arg.getAttribute("direction")
1603
== "out"):
1604
arg.setAttribute(
1605
"name",
1606
"objpath_interfaces"
1607
"_and_properties")
1608
xmlstring = document.toxml("utf-8")
1609
document.unlink()
1610
except (AttributeError, xml.dom.DOMException,
1611
xml.parsers.expat.ExpatError) as error:
1612
logger.error("Failed to override Introspection method",
1613
exc_info=error)
1614
return xmlstring
1615
1616
1617
def datetime_to_dbus(dt, variant_level=0):
1618
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1619
if dt is None:
1620
return dbus.String("", variant_level=variant_level)
1621
return dbus.String(dt.isoformat(), variant_level=variant_level)
1622
1623
1624
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1625
"""A class decorator; applied to a subclass of
1626
dbus.service.Object, it will add alternate D-Bus attributes with
1627
interface names according to the "alt_interface_names" mapping.
1628
Usage:
1629
1630
@alternate_dbus_interfaces({"org.example.Interface":
1631
"net.example.AlternateInterface"})
1632
class SampleDBusObject(dbus.service.Object):
1633
@dbus.service.method("org.example.Interface")
1634
def SampleDBusMethod():
1635
pass
1636
1637
The above "SampleDBusMethod" on "SampleDBusObject" will be
1638
reachable via two interfaces: "org.example.Interface" and
1639
"net.example.AlternateInterface", the latter of which will have
1640
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1641
"true", unless "deprecate" is passed with a False value.
1642
1643
This works for methods and signals, and also for D-Bus properties
1644
(from DBusObjectWithProperties) and interfaces (from the
1645
dbus_interface_annotations decorator).
1646
"""
1647
1648
def wrapper(cls):
1649
for orig_interface_name, alt_interface_name in (
1650
alt_interface_names.items()):
1651
attr = {}
1652
interface_names = set()
1653
# Go though all attributes of the class
1654
for attrname, attribute in inspect.getmembers(cls):
1655
# Ignore non-D-Bus attributes, and D-Bus attributes
1656
# with the wrong interface name
1657
if (not hasattr(attribute, "_dbus_interface")
1658
or not attribute._dbus_interface.startswith(
1659
orig_interface_name)):
1660
continue
1661
# Create an alternate D-Bus interface name based on
1662
# the current name
1663
alt_interface = attribute._dbus_interface.replace(
1664
orig_interface_name, alt_interface_name)
1665
interface_names.add(alt_interface)
1666
# Is this a D-Bus signal?
1667
if getattr(attribute, "_dbus_is_signal", False):
1668
# Extract the original non-method undecorated
1669
# function by black magic
1670
if sys.version_info.major == 2:
1671
nonmethod_func = (dict(
1672
zip(attribute.func_code.co_freevars,
1673
attribute.__closure__))
1674
["func"].cell_contents)
1675
else:
1676
nonmethod_func = (dict(
1677
zip(attribute.__code__.co_freevars,
1678
attribute.__closure__))
1679
["func"].cell_contents)
1680
# Create a new, but exactly alike, function
1681
# object, and decorate it to be a new D-Bus signal
1682
# with the alternate D-Bus interface name
1683
new_function = copy_function(nonmethod_func)
1684
new_function = (dbus.service.signal(
1685
alt_interface,
1686
attribute._dbus_signature)(new_function))
1687
# Copy annotations, if any
1688
try:
1689
new_function._dbus_annotations = dict(
1690
attribute._dbus_annotations)
1691
except AttributeError:
1692
pass
1693
1694
# Define a creator of a function to call both the
1695
# original and alternate functions, so both the
1696
# original and alternate signals gets sent when
1697
# the function is called
1698
def fixscope(func1, func2):
1699
"""This function is a scope container to pass
1700
func1 and func2 to the "call_both" function
1701
outside of its arguments"""
1702
1703
@functools.wraps(func2)
1704
def call_both(*args, **kwargs):
1705
"""This function will emit two D-Bus
1706
signals by calling func1 and func2"""
1707
func1(*args, **kwargs)
1708
func2(*args, **kwargs)
1709
# Make wrapper function look like a D-Bus
1710
# signal
1711
for name, attr in inspect.getmembers(func2):
1712
if name.startswith("_dbus_"):
1713
setattr(call_both, name, attr)
1714
1715
return call_both
1716
# Create the "call_both" function and add it to
1717
# the class
1718
attr[attrname] = fixscope(attribute, new_function)
1719
# Is this a D-Bus method?
1720
elif getattr(attribute, "_dbus_is_method", False):
1721
# Create a new, but exactly alike, function
1722
# object. Decorate it to be a new D-Bus method
1723
# with the alternate D-Bus interface name. Add it
1724
# to the class.
1725
attr[attrname] = (
1726
dbus.service.method(
1727
alt_interface,
1728
attribute._dbus_in_signature,
1729
attribute._dbus_out_signature)
1730
(copy_function(attribute)))
1731
# Copy annotations, if any
1732
try:
1733
attr[attrname]._dbus_annotations = dict(
1734
attribute._dbus_annotations)
1735
except AttributeError:
1736
pass
1737
# Is this a D-Bus property?
1738
elif getattr(attribute, "_dbus_is_property", False):
1739
# Create a new, but exactly alike, function
1740
# object, and decorate it to be a new D-Bus
1741
# property with the alternate D-Bus interface
1742
# name. Add it to the class.
1743
attr[attrname] = (dbus_service_property(
1744
alt_interface, attribute._dbus_signature,
1745
attribute._dbus_access,
1746
attribute._dbus_get_args_options
1747
["byte_arrays"])
1748
(copy_function(attribute)))
1749
# Copy annotations, if any
1750
try:
1751
attr[attrname]._dbus_annotations = dict(
1752
attribute._dbus_annotations)
1753
except AttributeError:
1754
pass
1755
# Is this a D-Bus interface?
1756
elif getattr(attribute, "_dbus_is_interface", False):
1757
# Create a new, but exactly alike, function
1758
# object. Decorate it to be a new D-Bus interface
1759
# with the alternate D-Bus interface name. Add it
1760
# to the class.
1761
attr[attrname] = (
1762
dbus_interface_annotations(alt_interface)
1763
(copy_function(attribute)))
1764
if deprecate:
1765
# Deprecate all alternate interfaces
1766
iname = "_AlternateDBusNames_interface_annotation{}"
1767
for interface_name in interface_names:
1768
1769
@dbus_interface_annotations(interface_name)
1770
def func(self):
1771
return {"org.freedesktop.DBus.Deprecated":
1772
"true"}
1773
# Find an unused name
1774
for aname in (iname.format(i)
1775
for i in itertools.count()):
1776
if aname not in attr:
1777
attr[aname] = func
1778
break
1779
if interface_names:
1780
# Replace the class with a new subclass of it with
1781
# methods, signals, etc. as created above.
1782
if sys.version_info.major == 2:
1783
cls = type(b"{}Alternate".format(cls.__name__),
1784
(cls, ), attr)
1785
else:
1786
cls = type("{}Alternate".format(cls.__name__),
1787
(cls, ), attr)
1788
return cls
1789
1790
return wrapper
1791
1792
1793
@alternate_dbus_interfaces({"se.recompile.Mandos":
1794
"se.bsnet.fukt.Mandos"})
707
xml.parsers.expat.ExpatError), error:
708
logger.error("Failed to override Introspection method",
709
error)
710
return xmlstring
711
712
1795
713
class ClientDBus(Client, DBusObjectWithProperties):
1796
714
"""A Client class using D-Bus
1797
715
1798
716
Attributes:
1799
717
dbus_object_path: dbus.ObjectPath
1800
718
bus: dbus.SystemBus()
1801
719
"""
1802
720
1803
721
runtime_expansions = (Client.runtime_expansions
1804
+ ("dbus_object_path", ))
1805
1806
_interface = "se.recompile.Mandos.Client"
1807
722
+ ("dbus_object_path",))
723
1808
724
# dbus.service.Object doesn't use super(), so we can't either.
1809
1810
def __init__(self, bus=None, *args, **kwargs):
725
726
def __init__(self, bus = None, *args, **kwargs):
727
self._approvals_pending = 0
1811
728
self.bus = bus
1812
729
Client.__init__(self, *args, **kwargs)
1813
730
# Only now, when this client is initialized, can it show up on
1814
731
# the D-Bus
1815
client_object_name = str(self.name).translate(
732
client_object_name = unicode(self.name).translate(
1816
733
{ord("."): ord("_"),
1817
734
ord("-"): ord("_")})
1818
self.dbus_object_path = dbus.ObjectPath(
1819
"/clients/" + client_object_name)
735
self.dbus_object_path = (dbus.ObjectPath
736
("/clients/" + client_object_name))
1820
737
DBusObjectWithProperties.__init__(self, self.bus,
1821
738
self.dbus_object_path)
1822
1823
def notifychangeproperty(transform_func, dbus_name,
1824
type_func=lambda x: x,
1825
variant_level=1,
1826
invalidate_only=False,
1827
_interface=_interface):
1828
""" Modify a variable so that it's a property which announces
1829
its changes to DBus.
1830
1831
transform_fun: Function that takes a value and a variant_level
1832
and transforms it to a D-Bus type.
1833
dbus_name: D-Bus name of the variable
1834
type_func: Function that transform the value before sending it
1835
to the D-Bus. Default: no transform
1836
variant_level: D-Bus variant level. Default: 1
1837
"""
1838
attrname = "_{}".format(dbus_name)
1839
1840
def setter(self, value):
1841
if hasattr(self, "dbus_object_path"):
1842
if (not hasattr(self, attrname) or
1843
type_func(getattr(self, attrname, None))
1844
!= type_func(value)):
1845
if invalidate_only:
1846
self.PropertiesChanged(
1847
_interface, dbus.Dictionary(),
1848
dbus.Array((dbus_name, )))
1849
else:
1850
dbus_value = transform_func(
1851
type_func(value),
1852
variant_level=variant_level)
1853
self.PropertyChanged(dbus.String(dbus_name),
1854
dbus_value)
1855
self.PropertiesChanged(
1856
_interface,
1857
dbus.Dictionary({dbus.String(dbus_name):
1858
dbus_value}),
1859
dbus.Array())
1860
setattr(self, attrname, value)
1861
1862
return property(lambda self: getattr(self, attrname), setter)
1863
1864
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1865
approvals_pending = notifychangeproperty(dbus.Boolean,
1866
"ApprovalPending",
1867
type_func=bool)
1868
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1869
last_enabled = notifychangeproperty(datetime_to_dbus,
1870
"LastEnabled")
1871
checker = notifychangeproperty(
1872
dbus.Boolean, "CheckerRunning",
1873
type_func=lambda checker: checker is not None)
1874
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1875
"LastCheckedOK")
1876
last_checker_status = notifychangeproperty(dbus.Int16,
1877
"LastCheckerStatus")
1878
last_approval_request = notifychangeproperty(
1879
datetime_to_dbus, "LastApprovalRequest")
1880
approved_by_default = notifychangeproperty(dbus.Boolean,
1881
"ApprovedByDefault")
1882
approval_delay = notifychangeproperty(
1883
dbus.UInt64, "ApprovalDelay",
1884
type_func=lambda td: td.total_seconds() * 1000)
1885
approval_duration = notifychangeproperty(
1886
dbus.UInt64, "ApprovalDuration",
1887
type_func=lambda td: td.total_seconds() * 1000)
1888
host = notifychangeproperty(dbus.String, "Host")
1889
timeout = notifychangeproperty(
1890
dbus.UInt64, "Timeout",
1891
type_func=lambda td: td.total_seconds() * 1000)
1892
extended_timeout = notifychangeproperty(
1893
dbus.UInt64, "ExtendedTimeout",
1894
type_func=lambda td: td.total_seconds() * 1000)
1895
interval = notifychangeproperty(
1896
dbus.UInt64, "Interval",
1897
type_func=lambda td: td.total_seconds() * 1000)
1898
checker_command = notifychangeproperty(dbus.String, "Checker")
1899
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1900
invalidate_only=True)
1901
1902
del notifychangeproperty
1903
739
740
def _get_approvals_pending(self):
741
return self._approvals_pending
742
def _set_approvals_pending(self, value):
743
old_value = self._approvals_pending
744
self._approvals_pending = value
745
bval = bool(value)
746
if (hasattr(self, "dbus_object_path")
747
and bval is not bool(old_value)):
748
dbus_bool = dbus.Boolean(bval, variant_level=1)
749
self.PropertyChanged(dbus.String("ApprovalPending"),
750
dbus_bool)
751
752
approvals_pending = property(_get_approvals_pending,
753
_set_approvals_pending)
754
del _get_approvals_pending, _set_approvals_pending
755
756
@staticmethod
757
def _datetime_to_dbus(dt, variant_level=0):
758
"""Convert a UTC datetime.datetime() to a D-Bus type."""
759
return dbus.String(dt.isoformat(),
760
variant_level=variant_level)
761
762
def enable(self):
763
oldstate = getattr(self, "enabled", False)
764
r = Client.enable(self)
765
if oldstate != self.enabled:
766
# Emit D-Bus signals
767
self.PropertyChanged(dbus.String("Enabled"),
768
dbus.Boolean(True, variant_level=1))
769
self.PropertyChanged(
770
dbus.String("LastEnabled"),
771
self._datetime_to_dbus(self.last_enabled,
772
variant_level=1))
773
return r
774
775
def disable(self, quiet = False):
776
oldstate = getattr(self, "enabled", False)
777
r = Client.disable(self, quiet=quiet)
778
if not quiet and oldstate != self.enabled:
779
# Emit D-Bus signal
780
self.PropertyChanged(dbus.String("Enabled"),
781
dbus.Boolean(False, variant_level=1))
782
return r
783
1904
784
def __del__(self, *args, **kwargs):
1905
785
try:
1906
786
self.remove_from_connection()
1909
789
if hasattr(DBusObjectWithProperties, "__del__"):
1910
790
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1911
791
Client.__del__(self, *args, **kwargs)
1912
1913
def checker_callback(self, source, condition,
1914
connection, command, *args, **kwargs):
1915
ret = Client.checker_callback(self, source, condition,
1916
connection, command, *args,
1917
**kwargs)
1918
exitstatus = self.last_checker_status
1919
if exitstatus >= 0:
792
793
def checker_callback(self, pid, condition, command,
794
*args, **kwargs):
795
self.checker_callback_tag = None
796
self.checker = None
797
# Emit D-Bus signal
798
self.PropertyChanged(dbus.String("CheckerRunning"),
799
dbus.Boolean(False, variant_level=1))
800
if os.WIFEXITED(condition):
801
exitstatus = os.WEXITSTATUS(condition)
1920
802
# Emit D-Bus signal
1921
803
self.CheckerCompleted(dbus.Int16(exitstatus),
1922
# This is specific to GNU libC
1923
dbus.Int64(exitstatus << 8),
804
dbus.Int64(condition),
1924
805
dbus.String(command))
1925
806
else:
1926
807
# Emit D-Bus signal
1927
808
self.CheckerCompleted(dbus.Int16(-1),
1928
dbus.Int64(
1929
# This is specific to GNU libC
1930
(exitstatus << 8)
1931
| self.last_checker_signal),
809
dbus.Int64(condition),
1932
810
dbus.String(command))
1933
return ret
1934
811
812
return Client.checker_callback(self, pid, condition, command,
813
*args, **kwargs)
814
815
def checked_ok(self, *args, **kwargs):
816
r = Client.checked_ok(self, *args, **kwargs)
817
# Emit D-Bus signal
818
self.PropertyChanged(
819
dbus.String("LastCheckedOK"),
820
(self._datetime_to_dbus(self.last_checked_ok,
821
variant_level=1)))
822
return r
823
824
def need_approval(self, *args, **kwargs):
825
r = Client.need_approval(self, *args, **kwargs)
826
# Emit D-Bus signal
827
self.PropertyChanged(
828
dbus.String("LastApprovalRequest"),
829
(self._datetime_to_dbus(self.last_approval_request,
830
variant_level=1)))
831
return r
832
1935
833
def start_checker(self, *args, **kwargs):
1936
old_checker_pid = getattr(self.checker, "pid", None)
834
old_checker = self.checker
835
if self.checker is not None:
836
old_checker_pid = self.checker.pid
837
else:
838
old_checker_pid = None
1937
839
r = Client.start_checker(self, *args, **kwargs)
1938
840
# Only if new checker process was started
1939
841
if (self.checker is not None
1940
842
and old_checker_pid != self.checker.pid):
1941
843
# Emit D-Bus signal
1942
844
self.CheckerStarted(self.current_checker_command)
845
self.PropertyChanged(
846
dbus.String("CheckerRunning"),
847
dbus.Boolean(True, variant_level=1))
848
return r
849
850
def stop_checker(self, *args, **kwargs):
851
old_checker = getattr(self, "checker", None)
852
r = Client.stop_checker(self, *args, **kwargs)
853
if (old_checker is not None
854
and getattr(self, "checker", None) is None):
855
self.PropertyChanged(dbus.String("CheckerRunning"),
856
dbus.Boolean(False, variant_level=1))
1943
857
return r
1944
858
1945
859
def _reset_approved(self):
1946
self.approved = None
860
self._approved = None
1947
861
return False
1948
862
1949
863
def approve(self, value=True):
1950
self.approved = value
1951
GLib.timeout_add(int(self.approval_duration.total_seconds()
1952
* 1000), self._reset_approved)
1953
864
self.send_changedstate()
1954
1955
# D-Bus methods, signals & properties
1956
1957
# Interfaces
1958
1959
# Signals
1960
865
self._approved = value
866
gobject.timeout_add(self._timedelta_to_milliseconds
867
(self.approval_duration),
868
self._reset_approved)
869
870
871
## D-Bus methods, signals & properties
872
_interface = "se.bsnet.fukt.Mandos.Client"
873
874
## Signals
875
1961
876
# CheckerCompleted - signal
1962
877
@dbus.service.signal(_interface, signature="nxs")
1963
878
def CheckerCompleted(self, exitcode, waitstatus, command):
1964
879
"D-Bus signal"
1965
880
pass
1966
881
1967
882
# CheckerStarted - signal
1968
883
@dbus.service.signal(_interface, signature="s")
1969
884
def CheckerStarted(self, command):
1970
885
"D-Bus signal"
1971
886
pass
1972
887
1973
888
# PropertyChanged - signal
1974
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1975
889
@dbus.service.signal(_interface, signature="sv")
1976
890
def PropertyChanged(self, property, value):
1977
891
"D-Bus signal"
1978
892
pass
1979
893
1980
894
# GotSecret - signal
1981
895
@dbus.service.signal(_interface)
1982
896
def GotSecret(self):
1985
899
server to mandos-client
1986
900
"""
1987
901
pass
1988
902
1989
903
# Rejected - signal
1990
904
@dbus.service.signal(_interface, signature="s")
1991
905
def Rejected(self, reason):
1992
906
"D-Bus signal"
1993
907
pass
1994
908
1995
909
# NeedApproval - signal
1996
910
@dbus.service.signal(_interface, signature="tb")
1997
911
def NeedApproval(self, timeout, default):
1998
912
"D-Bus signal"
1999
913
return self.need_approval()
2000
2001
# Methods
2002
914
915
## Methods
916
2003
917
# Approve - method
2004
918
@dbus.service.method(_interface, in_signature="b")
2005
919
def Approve(self, value):
2006
920
self.approve(value)
2007
921
2008
922
# CheckedOK - method
2009
923
@dbus.service.method(_interface)
2010
924
def CheckedOK(self):
2011
self.checked_ok()
2012
925
return self.checked_ok()
926
2013
927
# Enable - method
2014
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2015
928
@dbus.service.method(_interface)
2016
929
def Enable(self):
2017
930
"D-Bus method"
2018
931
self.enable()
2019
932
2020
933
# StartChecker - method
2021
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2022
934
@dbus.service.method(_interface)
2023
935
def StartChecker(self):
2024
936
"D-Bus method"
2025
937
self.start_checker()
2026
938
2027
939
# Disable - method
2028
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2029
940
@dbus.service.method(_interface)
2030
941
def Disable(self):
2031
942
"D-Bus method"
2032
943
self.disable()
2033
944
2034
945
# StopChecker - method
2035
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2036
946
@dbus.service.method(_interface)
2037
947
def StopChecker(self):
2038
948
self.stop_checker()
2039
2040
# Properties
2041
949
950
## Properties
951
2042
952
# ApprovalPending - property
2043
953
@dbus_service_property(_interface, signature="b", access="read")
2044
954
def ApprovalPending_dbus_property(self):
2045
955
return dbus.Boolean(bool(self.approvals_pending))
2046
956
2047
957
# ApprovedByDefault - property
2048
@dbus_service_property(_interface,
2049
signature="b",
958
@dbus_service_property(_interface, signature="b",
2050
959
access="readwrite")
2051
960
def ApprovedByDefault_dbus_property(self, value=None):
2052
961
if value is None: # get
2053
962
return dbus.Boolean(self.approved_by_default)
2054
963
self.approved_by_default = bool(value)
2055
964
# Emit D-Bus signal
965
self.PropertyChanged(dbus.String("ApprovedByDefault"),
966
dbus.Boolean(value, variant_level=1))
967
2056
968
# ApprovalDelay - property
2057
@dbus_service_property(_interface,
2058
signature="t",
969
@dbus_service_property(_interface, signature="t",
2059
970
access="readwrite")
2060
971
def ApprovalDelay_dbus_property(self, value=None):
2061
972
if value is None: # get
2062
return dbus.UInt64(self.approval_delay.total_seconds()
2063
* 1000)
973
return dbus.UInt64(self.approval_delay_milliseconds())
2064
974
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2065
975
# Emit D-Bus signal
976
self.PropertyChanged(dbus.String("ApprovalDelay"),
977
dbus.UInt64(value, variant_level=1))
978
2066
979
# ApprovalDuration - property
2067
@dbus_service_property(_interface,
2068
signature="t",
980
@dbus_service_property(_interface, signature="t",
2069
981
access="readwrite")
2070
982
def ApprovalDuration_dbus_property(self, value=None):
2071
983
if value is None: # get
2072
return dbus.UInt64(self.approval_duration.total_seconds()
2073
* 1000)
984
return dbus.UInt64(self._timedelta_to_milliseconds(
985
self.approval_duration))
2074
986
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2075
987
# Emit D-Bus signal
988
self.PropertyChanged(dbus.String("ApprovalDuration"),
989
dbus.UInt64(value, variant_level=1))
990
2076
991
# Name - property
2077
@dbus_annotations(
2078
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2079
992
@dbus_service_property(_interface, signature="s", access="read")
2080
993
def Name_dbus_property(self):
2081
994
return dbus.String(self.name)
2082
2083
# KeyID - property
2084
@dbus_annotations(
2085
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2086
@dbus_service_property(_interface, signature="s", access="read")
2087
def KeyID_dbus_property(self):
2088
return dbus.String(self.key_id)
2089
995
2090
996
# Fingerprint - property
2091
@dbus_annotations(
2092
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2093
997
@dbus_service_property(_interface, signature="s", access="read")
2094
998
def Fingerprint_dbus_property(self):
2095
999
return dbus.String(self.fingerprint)
2096
1000
2097
1001
# Host - property
2098
@dbus_service_property(_interface,
2099
signature="s",
1002
@dbus_service_property(_interface, signature="s",
2100
1003
access="readwrite")
2101
1004
def Host_dbus_property(self, value=None):
2102
1005
if value is None: # get
2103
1006
return dbus.String(self.host)
2104
self.host = str(value)
2105
1007
self.host = value
1008
# Emit D-Bus signal
1009
self.PropertyChanged(dbus.String("Host"),
1010
dbus.String(value, variant_level=1))
1011
2106
1012
# Created - property
2107
@dbus_annotations(
2108
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2109
1013
@dbus_service_property(_interface, signature="s", access="read")
2110
1014
def Created_dbus_property(self):
2111
return datetime_to_dbus(self.created)
2112
1015
return dbus.String(self._datetime_to_dbus(self.created))
1016
2113
1017
# LastEnabled - property
2114
1018
@dbus_service_property(_interface, signature="s", access="read")
2115
1019
def LastEnabled_dbus_property(self):
2116
return datetime_to_dbus(self.last_enabled)
2117
1020
if self.last_enabled is None:
1021
return dbus.String("")
1022
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1023
2118
1024
# Enabled - property
2119
@dbus_service_property(_interface,
2120
signature="b",
1025
@dbus_service_property(_interface, signature="b",
2121
1026
access="readwrite")
2122
1027
def Enabled_dbus_property(self, value=None):
2123
1028
if value is None: # get
2126
1031
self.enable()
2127
1032
else:
2128
1033
self.disable()
2129
1034
2130
1035
# LastCheckedOK - property
2131
@dbus_service_property(_interface,
2132
signature="s",
1036
@dbus_service_property(_interface, signature="s",
2133
1037
access="readwrite")
2134
1038
def LastCheckedOK_dbus_property(self, value=None):
2135
1039
if value is not None:
2136
1040
self.checked_ok()
2137
1041
return
2138
return datetime_to_dbus(self.last_checked_ok)
2139
2140
# LastCheckerStatus - property
2141
@dbus_service_property(_interface, signature="n", access="read")
2142
def LastCheckerStatus_dbus_property(self):
2143
return dbus.Int16(self.last_checker_status)
2144
2145
# Expires - property
2146
@dbus_service_property(_interface, signature="s", access="read")
2147
def Expires_dbus_property(self):
2148
return datetime_to_dbus(self.expires)
2149
1042
if self.last_checked_ok is None:
1043
return dbus.String("")
1044
return dbus.String(self._datetime_to_dbus(self
1045
.last_checked_ok))
1046
2150
1047
# LastApprovalRequest - property
2151
1048
@dbus_service_property(_interface, signature="s", access="read")
2152
1049
def LastApprovalRequest_dbus_property(self):
2153
return datetime_to_dbus(self.last_approval_request)
2154
1050
if self.last_approval_request is None:
1051
return dbus.String("")
1052
return dbus.String(self.
1053
_datetime_to_dbus(self
1054
.last_approval_request))
1055
2155
1056
# Timeout - property
2156
@dbus_service_property(_interface,
2157
signature="t",
1057
@dbus_service_property(_interface, signature="t",
2158
1058
access="readwrite")
2159
1059
def Timeout_dbus_property(self, value=None):
2160
1060
if value is None: # get
2161
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2162
old_timeout = self.timeout
1061
return dbus.UInt64(self.timeout_milliseconds())
2163
1062
self.timeout = datetime.timedelta(0, 0, 0, value)
2164
# Reschedule disabling
2165
if self.enabled:
2166
now = datetime.datetime.utcnow()
2167
self.expires += self.timeout - old_timeout
2168
if self.expires <= now:
2169
# The timeout has passed
2170
self.disable()
2171
else:
2172
if (getattr(self, "disable_initiator_tag", None)
2173
is None):
2174
return
2175
GLib.source_remove(self.disable_initiator_tag)
2176
self.disable_initiator_tag = GLib.timeout_add(
2177
int((self.expires - now).total_seconds() * 1000),
2178
self.disable)
2179
2180
# ExtendedTimeout - property
2181
@dbus_service_property(_interface,
2182
signature="t",
2183
access="readwrite")
2184
def ExtendedTimeout_dbus_property(self, value=None):
2185
if value is None: # get
2186
return dbus.UInt64(self.extended_timeout.total_seconds()
2187
* 1000)
2188
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2189
1063
# Emit D-Bus signal
1064
self.PropertyChanged(dbus.String("Timeout"),
1065
dbus.UInt64(value, variant_level=1))
1066
if getattr(self, "disable_initiator_tag", None) is None:
1067
return
1068
# Reschedule timeout
1069
gobject.source_remove(self.disable_initiator_tag)
1070
self.disable_initiator_tag = None
1071
time_to_die = (self.
1072
_timedelta_to_milliseconds((self
1073
.last_checked_ok
1074
+ self.timeout)
1075
- datetime.datetime
1076
.utcnow()))
1077
if time_to_die <= 0:
1078
# The timeout has passed
1079
self.disable()
1080
else:
1081
self.disable_initiator_tag = (gobject.timeout_add
1082
(time_to_die, self.disable))
1083
2190
1084
# Interval - property
2191
@dbus_service_property(_interface,
2192
signature="t",
1085
@dbus_service_property(_interface, signature="t",
2193
1086
access="readwrite")
2194
1087
def Interval_dbus_property(self, value=None):
2195
1088
if value is None: # get
2196
return dbus.UInt64(self.interval.total_seconds() * 1000)
1089
return dbus.UInt64(self.interval_milliseconds())
2197
1090
self.interval = datetime.timedelta(0, 0, 0, value)
1091
# Emit D-Bus signal
1092
self.PropertyChanged(dbus.String("Interval"),
1093
dbus.UInt64(value, variant_level=1))
2198
1094
if getattr(self, "checker_initiator_tag", None) is None:
2199
1095
return
2200
if self.enabled:
2201
# Reschedule checker run
2202
GLib.source_remove(self.checker_initiator_tag)
2203
self.checker_initiator_tag = GLib.timeout_add(
2204
value, self.start_checker)
2205
self.start_checker() # Start one now, too
1096
# Reschedule checker run
1097
gobject.source_remove(self.checker_initiator_tag)
1098
self.checker_initiator_tag = (gobject.timeout_add
1099
(value, self.start_checker))
1100
self.start_checker() # Start one now, too
2206
1101
2207
1102
# Checker - property
2208
@dbus_service_property(_interface,
2209
signature="s",
1103
@dbus_service_property(_interface, signature="s",
2210
1104
access="readwrite")
2211
1105
def Checker_dbus_property(self, value=None):
2212
1106
if value is None: # get
2213
1107
return dbus.String(self.checker_command)
2214
self.checker_command = str(value)
2215
1108
self.checker_command = value
1109
# Emit D-Bus signal
1110
self.PropertyChanged(dbus.String("Checker"),
1111
dbus.String(self.checker_command,
1112
variant_level=1))
1113
2216
1114
# CheckerRunning - property
2217
@dbus_service_property(_interface,
2218
signature="b",
1115
@dbus_service_property(_interface, signature="b",
2219
1116
access="readwrite")
2220
1117
def CheckerRunning_dbus_property(self, value=None):
2221
1118
if value is None: # get
2224
1121
self.start_checker()
2225
1122
else:
2226
1123
self.stop_checker()
2227
1124
2228
1125
# ObjectPath - property
2229
@dbus_annotations(
2230
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2231
"org.freedesktop.DBus.Deprecated": "true"})
2232
1126
@dbus_service_property(_interface, signature="o", access="read")
2233
1127
def ObjectPath_dbus_property(self):
2234
return self.dbus_object_path # is already a dbus.ObjectPath
2235
1128
return self.dbus_object_path # is already a dbus.ObjectPath
1129
2236
1130
# Secret = property
2237
@dbus_annotations(
2238
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2239
"invalidates"})
2240
@dbus_service_property(_interface,
2241
signature="ay",
2242
access="write",
2243
byte_arrays=True)
1131
@dbus_service_property(_interface, signature="ay",
1132
access="write", byte_arrays=True)
2244
1133
def Secret_dbus_property(self, value):
2245
self.secret = bytes(value)
2246
1134
self.secret = str(value)
1135
2247
1136
del _interface
2248
1137
2249
1138
2250
class ProxyClient:
2251
def __init__(self, child_pipe, key_id, fpr, address):
1139
class ProxyClient(object):
1140
def __init__(self, child_pipe, fpr, address):
2252
1141
self._pipe = child_pipe
2253
self._pipe.send(('init', key_id, fpr, address))
1142
self._pipe.send(('init', fpr, address))
2254
1143
if not self._pipe.recv():
2255
raise KeyError(key_id or fpr)
1144
raise KeyError()
2256
1145
2257
1146
def __getattribute__(self, name):
2258
if name == '_pipe':
1147
if(name == '_pipe'):
2259
1148
return super(ProxyClient, self).__getattribute__(name)
2260
1149
self._pipe.send(('getattr', name))
2261
1150
data = self._pipe.recv()
2262
1151
if data[0] == 'data':
2263
1152
return data[1]
2264
1153
if data[0] == 'function':
2265
2266
1154
def func(*args, **kwargs):
2267
1155
self._pipe.send(('funcall', name, args, kwargs))
2268
1156
return self._pipe.recv()[1]
2269
2270
1157
return func
2271
1158
2272
1159
def __setattr__(self, name, value):
2273
if name == '_pipe':
1160
if(name == '_pipe'):
2274
1161
return super(ProxyClient, self).__setattr__(name, value)
2275
1162
self._pipe.send(('setattr', name, value))
2276
1163
2277
1164
2278
1165
class ClientHandler(socketserver.BaseRequestHandler, object):
2279
1166
"""A class to handle client connections.
2280
1167
2281
1168
Instantiated once for each connection to handle it.
2282
1169
Note: This will run in its own forked process."""
2283
1170
2284
1171
def handle(self):
2285
1172
with contextlib.closing(self.server.child_pipe) as child_pipe:
2286
1173
logger.info("TCP connection from: %s",
2287
str(self.client_address))
1174
unicode(self.client_address))
2288
1175
logger.debug("Pipe FD: %d",
2289
1176
self.server.child_pipe.fileno())
2290
1177
2291
session = gnutls.ClientSession(self.request)
2292
2293
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2294
# "+AES-256-CBC", "+SHA1",
2295
# "+COMP-NULL", "+CTYPE-OPENPGP",
2296
# "+DHE-DSS"))
1178
session = (gnutls.connection
1179
.ClientSession(self.request,
1180
gnutls.connection
1181
.X509Credentials()))
1182
1183
# Note: gnutls.connection.X509Credentials is really a
1184
# generic GnuTLS certificate credentials object so long as
1185
# no X.509 keys are added to it. Therefore, we can use it
1186
# here despite using OpenPGP certificates.
1187
1188
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1189
# "+AES-256-CBC", "+SHA1",
1190
# "+COMP-NULL", "+CTYPE-OPENPGP",
1191
# "+DHE-DSS"))
2297
1192
# Use a fallback default, since this MUST be set.
2298
1193
priority = self.server.gnutls_priority
2299
1194
if priority is None:
2300
1195
priority = "NORMAL"
2301
gnutls.priority_set_direct(session._c_object,
2302
priority.encode("utf-8"),
2303
None)
1196
(gnutls.library.functions
1197
.gnutls_priority_set_direct(session._c_object,
1198
priority, None))
2304
1199
2305
1200
# Start communication using the Mandos protocol
2306
1201
# Get protocol number
2308
1203
logger.debug("Protocol version: %r", line)
2309
1204
try:
2310
1205
if int(line.strip().split()[0]) > 1:
2311
raise RuntimeError(line)
2312
except (ValueError, IndexError, RuntimeError) as error:
1206
raise RuntimeError
1207
except (ValueError, IndexError, RuntimeError), error:
2313
1208
logger.error("Unknown protocol version: %s", error)
2314
1209
return
2315
1210
2316
1211
# Start GnuTLS connection
2317
1212
try:
2318
1213
session.handshake()
2319
except gnutls.Error as error:
1214
except gnutls.errors.GNUTLSError, error:
2320
1215
logger.warning("Handshake failed: %s", error)
2321
1216
# Do not run session.bye() here: the session is not
2322
1217
# established. Just abandon the request.
2325
1220
2326
1221
approval_required = False
2327
1222
try:
2328
if gnutls.has_rawpk:
2329
fpr = b""
2330
try:
2331
key_id = self.key_id(
2332
self.peer_certificate(session))
2333
except (TypeError, gnutls.Error) as error:
2334
logger.warning("Bad certificate: %s", error)
2335
return
2336
logger.debug("Key ID: %s", key_id)
2337
2338
else:
2339
key_id = b""
2340
try:
2341
fpr = self.fingerprint(
2342
self.peer_certificate(session))
2343
except (TypeError, gnutls.Error) as error:
2344
logger.warning("Bad certificate: %s", error)
2345
return
2346
logger.debug("Fingerprint: %s", fpr)
2347
2348
try:
2349
client = ProxyClient(child_pipe, key_id, fpr,
1223
try:
1224
fpr = self.fingerprint(self.peer_certificate
1225
(session))
1226
except (TypeError, gnutls.errors.GNUTLSError), error:
1227
logger.warning("Bad certificate: %s", error)
1228
return
1229
logger.debug("Fingerprint: %s", fpr)
1230
1231
try:
1232
client = ProxyClient(child_pipe, fpr,
2350
1233
self.client_address)
2351
1234
except KeyError:
2352
1235
return
2353
1236
2354
1237
if client.approval_delay:
2355
1238
delay = client.approval_delay
2356
1239
client.approvals_pending += 1
2357
1240
approval_required = True
2358
1241
2359
1242
while True:
2360
1243
if not client.enabled:
2361
logger.info("Client %s is disabled",
2362
client.name)
1244
logger.warning("Client %s is disabled",
1245
client.name)
2363
1246
if self.server.use_dbus:
2364
1247
# Emit D-Bus signal
2365
client.Rejected("Disabled")
1248
client.Rejected("Disabled")
2366
1249
return
2367
2368
if client.approved or not client.approval_delay:
2369
# We are approved or approval is disabled
1250
1251
if client._approved or not client.approval_delay:
1252
#We are approved or approval is disabled
2370
1253
break
2371
elif client.approved is None:
1254
elif client._approved is None:
2372
1255
logger.info("Client %s needs approval",
2373
1256
client.name)
2374
1257
if self.server.use_dbus:
2375
1258
# Emit D-Bus signal
2376
1259
client.NeedApproval(
2377
client.approval_delay.total_seconds()
2378
* 1000, client.approved_by_default)
1260
client.approval_delay_milliseconds(),
1261
client.approved_by_default)
2379
1262
else:
2380
1263
logger.warning("Client %s was not approved",
2381
1264
client.name)
2383
1266
# Emit D-Bus signal
2384
1267
client.Rejected("Denied")
2385
1268
return
2386
2387
# wait until timeout or approved
1269
1270
#wait until timeout or approved
1271
#x = float(client._timedelta_to_milliseconds(delay))
2388
1272
time = datetime.datetime.now()
2389
1273
client.changedstate.acquire()
2390
client.changedstate.wait(delay.total_seconds())
1274
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2391
1275
client.changedstate.release()
2392
1276
time2 = datetime.datetime.now()
2393
1277
if (time2 - time) >= delay:
2403
1287
break
2404
1288
else:
2405
1289
delay -= time2 - time
2406
2407
try:
2408
session.send(client.secret)
2409
except gnutls.Error as error:
2410
logger.warning("gnutls send failed",
2411
exc_info=error)
2412
return
1290
1291
sent_size = 0
1292
while sent_size < len(client.secret):
1293
try:
1294
sent = session.send(client.secret[sent_size:])
1295
except (gnutls.errors.GNUTLSError), error:
1296
logger.warning("gnutls send failed")
1297
return
1298
logger.debug("Sent: %d, remaining: %d",
1299
sent, len(client.secret)
1300
- (sent_size + sent))
1301
sent_size += sent
2413
1302
2414
1303
logger.info("Sending secret to %s", client.name)
2415
# bump the timeout using extended_timeout
2416
client.bump_timeout(client.extended_timeout)
1304
# bump the timeout as if seen
1305
client.checked_ok()
2417
1306
if self.server.use_dbus:
2418
1307
# Emit D-Bus signal
2419
1308
client.GotSecret()
2420
1309
2421
1310
finally:
2422
1311
if approval_required:
2423
1312
client.approvals_pending -= 1
2424
1313
try:
2425
1314
session.bye()
2426
except gnutls.Error as error:
2427
logger.warning("GnuTLS bye failed",
2428
exc_info=error)
2429
1315
except (gnutls.errors.GNUTLSError), error:
1316
logger.warning("GnuTLS bye failed")
1317
2430
1318
@staticmethod
2431
1319
def peer_certificate(session):
2432
"Return the peer's certificate as a bytestring"
2433
try:
2434
cert_type = gnutls.certificate_type_get2(session._c_object,
2435
gnutls.CTYPE_PEERS)
2436
except AttributeError:
2437
cert_type = gnutls.certificate_type_get(session._c_object)
2438
if gnutls.has_rawpk:
2439
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2440
else:
2441
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2442
# If not a valid certificate type...
2443
if cert_type not in valid_cert_types:
2444
logger.info("Cert type %r not in %r", cert_type,
2445
valid_cert_types)
2446
# ...return invalid data
2447
return b""
1320
"Return the peer's OpenPGP certificate as a bytestring"
1321
# If not an OpenPGP certificate...
1322
if (gnutls.library.functions
1323
.gnutls_certificate_type_get(session._c_object)
1324
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1325
# ...do the normal thing
1326
return session.peer_certificate
2448
1327
list_size = ctypes.c_uint(1)
2449
cert_list = (gnutls.certificate_get_peers
1328
cert_list = (gnutls.library.functions
1329
.gnutls_certificate_get_peers
2450
1330
(session._c_object, ctypes.byref(list_size)))
2451
1331
if not bool(cert_list) and list_size.value != 0:
2452
raise gnutls.Error("error getting peer certificate")
1332
raise gnutls.errors.GNUTLSError("error getting peer"
1333
" certificate")
2453
1334
if list_size.value == 0:
2454
1335
return None
2455
1336
cert = cert_list[0]
2456
1337
return ctypes.string_at(cert.data, cert.size)
2457
2458
@staticmethod
2459
def key_id(certificate):
2460
"Convert a certificate bytestring to a hexdigit key ID"
2461
# New GnuTLS "datum" with the public key
2462
datum = gnutls.datum_t(
2463
ctypes.cast(ctypes.c_char_p(certificate),
2464
ctypes.POINTER(ctypes.c_ubyte)),
2465
ctypes.c_uint(len(certificate)))
2466
# XXX all these need to be created in the gnutls "module"
2467
# New empty GnuTLS certificate
2468
pubkey = gnutls.pubkey_t()
2469
gnutls.pubkey_init(ctypes.byref(pubkey))
2470
# Import the raw public key into the certificate
2471
gnutls.pubkey_import(pubkey,
2472
ctypes.byref(datum),
2473
gnutls.X509_FMT_DER)
2474
# New buffer for the key ID
2475
buf = ctypes.create_string_buffer(32)
2476
buf_len = ctypes.c_size_t(len(buf))
2477
# Get the key ID from the raw public key into the buffer
2478
gnutls.pubkey_get_key_id(
2479
pubkey,
2480
gnutls.KEYID_USE_SHA256,
2481
ctypes.cast(ctypes.byref(buf),
2482
ctypes.POINTER(ctypes.c_ubyte)),
2483
ctypes.byref(buf_len))
2484
# Deinit the certificate
2485
gnutls.pubkey_deinit(pubkey)
2486
2487
# Convert the buffer to a Python bytestring
2488
key_id = ctypes.string_at(buf, buf_len.value)
2489
# Convert the bytestring to hexadecimal notation
2490
hex_key_id = binascii.hexlify(key_id).upper()
2491
return hex_key_id
2492
1338
2493
1339
@staticmethod
2494
1340
def fingerprint(openpgp):
2495
1341
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2496
1342
# New GnuTLS "datum" with the OpenPGP public key
2497
datum = gnutls.datum_t(
2498
ctypes.cast(ctypes.c_char_p(openpgp),
2499
ctypes.POINTER(ctypes.c_ubyte)),
2500
ctypes.c_uint(len(openpgp)))
1343
datum = (gnutls.library.types
1344
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1345
ctypes.POINTER
1346
(ctypes.c_ubyte)),
1347
ctypes.c_uint(len(openpgp))))
2501
1348
# New empty GnuTLS certificate
2502
crt = gnutls.openpgp_crt_t()
2503
gnutls.openpgp_crt_init(ctypes.byref(crt))
1349
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1350
(gnutls.library.functions
1351
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2504
1352
# Import the OpenPGP public key into the certificate
2505
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2506
gnutls.OPENPGP_FMT_RAW)
1353
(gnutls.library.functions
1354
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1355
gnutls.library.constants
1356
.GNUTLS_OPENPGP_FMT_RAW))
2507
1357
# Verify the self signature in the key
2508
1358
crtverify = ctypes.c_uint()
2509
gnutls.openpgp_crt_verify_self(crt, 0,
2510
ctypes.byref(crtverify))
1359
(gnutls.library.functions
1360
.gnutls_openpgp_crt_verify_self(crt, 0,
1361
ctypes.byref(crtverify)))
2511
1362
if crtverify.value != 0:
2512
gnutls.openpgp_crt_deinit(crt)
2513
raise gnutls.CertificateSecurityError(code
2514
=crtverify.value)
1363
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1364
raise (gnutls.errors.CertificateSecurityError
1365
("Verify failed"))
2515
1366
# New buffer for the fingerprint
2516
1367
buf = ctypes.create_string_buffer(20)
2517
1368
buf_len = ctypes.c_size_t()
2518
1369
# Get the fingerprint from the certificate into the buffer
2519
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2520
ctypes.byref(buf_len))
1370
(gnutls.library.functions
1371
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1372
ctypes.byref(buf_len)))
2521
1373
# Deinit the certificate
2522
gnutls.openpgp_crt_deinit(crt)
1374
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2523
1375
# Convert the buffer to a Python bytestring
2524
1376
fpr = ctypes.string_at(buf, buf_len.value)
2525
1377
# Convert the bytestring to hexadecimal notation
2526
hex_fpr = binascii.hexlify(fpr).upper()
1378
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2527
1379
return hex_fpr
2528
1380
2529
1381
2530
class MultiprocessingMixIn:
1382
class MultiprocessingMixIn(object):
2531
1383
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2532
2533
1384
def sub_process_main(self, request, address):
2534
1385
try:
2535
1386
self.finish_request(request, address)
2536
except Exception:
1387
except:
2537
1388
self.handle_error(request, address)
2538
1389
self.close_request(request)
2539
1390
2540
1391
def process_request(self, request, address):
2541
1392
"""Start a new process to process the request."""
2542
proc = multiprocessing.Process(target=self.sub_process_main,
2543
args=(request, address))
2544
proc.start()
2545
return proc
2546
2547
2548
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1393
multiprocessing.Process(target = self.sub_process_main,
1394
args = (request, address)).start()
1395
1396
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2549
1397
""" adds a pipe to the MixIn """
2550
2551
1398
def process_request(self, request, client_address):
2552
1399
"""Overrides and wraps the original process_request().
2553
1400
2554
1401
This function creates a new pipe in self.pipe
2555
1402
"""
2556
1403
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2557
1404
2558
proc = MultiprocessingMixIn.process_request(self, request,
2559
client_address)
1405
super(MultiprocessingMixInWithPipe,
1406
self).process_request(request, client_address)
2560
1407
self.child_pipe.close()
2561
self.add_pipe(parent_pipe, proc)
1408
self.add_pipe(parent_pipe)
2562
1409
2563
def add_pipe(self, parent_pipe, proc):
1410
def add_pipe(self, parent_pipe):
2564
1411
"""Dummy function; override as necessary"""
2565
raise NotImplementedError()
2566
1412
raise NotImplementedError
2567
1413
2568
1414
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2569
socketserver.TCPServer):
1415
socketserver.TCPServer, object):
2570
1416
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2571
1417
2572
1418
Attributes:
2573
1419
enabled: Boolean; whether this server is activated yet
2574
1420
interface: None or a network interface name (string)
2575
1421
use_ipv6: Boolean; to use IPv6 or not
2576
1422
"""
2577
2578
1423
def __init__(self, server_address, RequestHandlerClass,
2579
interface=None,
2580
use_ipv6=True,
2581
socketfd=None):
2582
"""If socketfd is set, use that file descriptor instead of
2583
creating a new one with socket.socket().
2584
"""
1424
interface=None, use_ipv6=True):
2585
1425
self.interface = interface
2586
1426
if use_ipv6:
2587
1427
self.address_family = socket.AF_INET6
2588
if socketfd is not None:
2589
# Save the file descriptor
2590
self.socketfd = socketfd
2591
# Save the original socket.socket() function
2592
self.socket_socket = socket.socket
2593
2594
# To implement --socket, we monkey patch socket.socket.
2595
#
2596
# (When socketserver.TCPServer is a new-style class, we
2597
# could make self.socket into a property instead of monkey
2598
# patching socket.socket.)
2599
#
2600
# Create a one-time-only replacement for socket.socket()
2601
@functools.wraps(socket.socket)
2602
def socket_wrapper(*args, **kwargs):
2603
# Restore original function so subsequent calls are
2604
# not affected.
2605
socket.socket = self.socket_socket
2606
del self.socket_socket
2607
# This time only, return a new socket object from the
2608
# saved file descriptor.
2609
return socket.fromfd(self.socketfd, *args, **kwargs)
2610
# Replace socket.socket() function with wrapper
2611
socket.socket = socket_wrapper
2612
# The socketserver.TCPServer.__init__ will call
2613
# socket.socket(), which might be our replacement,
2614
# socket_wrapper(), if socketfd was set.
2615
1428
socketserver.TCPServer.__init__(self, server_address,
2616
1429
RequestHandlerClass)
2617
2618
1430
def server_bind(self):
2619
1431
"""This overrides the normal server_bind() function
2620
1432
to bind to an interface if one was specified, and also NOT to
2621
1433
bind to an address or port if they were not specified."""
2622
global SO_BINDTODEVICE
2623
1434
if self.interface is not None:
2624
1435
if SO_BINDTODEVICE is None:
2625
# Fall back to a hard-coded value which seems to be
2626
# common enough.
2627
logger.warning("SO_BINDTODEVICE not found, trying 25")
2628
SO_BINDTODEVICE = 25
2629
try:
2630
self.socket.setsockopt(
2631
socket.SOL_SOCKET, SO_BINDTODEVICE,
2632
(self.interface + "\0").encode("utf-8"))
2633
except socket.error as error:
2634
if error.errno == errno.EPERM:
2635
logger.error("No permission to bind to"
2636
" interface %s", self.interface)
2637
elif error.errno == errno.ENOPROTOOPT:
2638
logger.error("SO_BINDTODEVICE not available;"
2639
" cannot bind to interface %s",
2640
self.interface)
2641
elif error.errno == errno.ENODEV:
2642
logger.error("Interface %s does not exist,"
2643
" cannot bind", self.interface)
2644
else:
2645
raise
1436
logger.error("SO_BINDTODEVICE does not exist;"
1437
" cannot bind to interface %s",
1438
self.interface)
1439
else:
1440
try:
1441
self.socket.setsockopt(socket.SOL_SOCKET,
1442
SO_BINDTODEVICE,
1443
str(self.interface
1444
+ '\0'))
1445
except socket.error, error:
1446
if error[0] == errno.EPERM:
1447
logger.error("No permission to"
1448
" bind to interface %s",
1449
self.interface)
1450
elif error[0] == errno.ENOPROTOOPT:
1451
logger.error("SO_BINDTODEVICE not available;"
1452
" cannot bind to interface %s",
1453
self.interface)
1454
else:
1455
raise
2646
1456
# Only bind(2) the socket if we really need to.
2647
1457
if self.server_address[0] or self.server_address[1]:
2648
if self.server_address[1]:
2649
self.allow_reuse_address = True
2650
1458
if not self.server_address[0]:
2651
1459
if self.address_family == socket.AF_INET6:
2652
any_address = "::" # in6addr_any
1460
any_address = "::" # in6addr_any
2653
1461
else:
2654
any_address = "0.0.0.0" # INADDR_ANY
1462
any_address = socket.INADDR_ANY
2655
1463
self.server_address = (any_address,
2656
1464
self.server_address[1])
2657
1465
elif not self.server_address[1]:
2658
self.server_address = (self.server_address[0], 0)
1466
self.server_address = (self.server_address[0],
1467
0)
2659
1468
# if self.interface:
2660
1469
# self.server_address = (self.server_address[0],
2661
1470
# 0, # port
2667
1476
2668
1477
class MandosServer(IPv6_TCPServer):
2669
1478
"""Mandos server.
2670
1479
2671
1480
Attributes:
2672
1481
clients: set of Client objects
2673
1482
gnutls_priority GnuTLS priority string
2674
1483
use_dbus: Boolean; to emit D-Bus signals or not
2675
2676
Assumes a GLib.MainLoop event loop.
1484
1485
Assumes a gobject.MainLoop event loop.
2677
1486
"""
2678
2679
1487
def __init__(self, server_address, RequestHandlerClass,
2680
interface=None,
2681
use_ipv6=True,
2682
clients=None,
2683
gnutls_priority=None,
2684
use_dbus=True,
2685
socketfd=None):
1488
interface=None, use_ipv6=True, clients=None,
1489
gnutls_priority=None, use_dbus=True):
2686
1490
self.enabled = False
2687
1491
self.clients = clients
2688
1492
if self.clients is None:
2689
self.clients = {}
1493
self.clients = set()
2690
1494
self.use_dbus = use_dbus
2691
1495
self.gnutls_priority = gnutls_priority
2692
1496
IPv6_TCPServer.__init__(self, server_address,
2693
1497
RequestHandlerClass,
2694
interface=interface,
2695
use_ipv6=use_ipv6,
2696
socketfd=socketfd)
2697
1498
interface = interface,
1499
use_ipv6 = use_ipv6)
2698
1500
def server_activate(self):
2699
1501
if self.enabled:
2700
1502
return socketserver.TCPServer.server_activate(self)
2701
2702
1503
def enable(self):
2703
1504
self.enabled = True
2704
2705
def add_pipe(self, parent_pipe, proc):
1505
def add_pipe(self, parent_pipe):
2706
1506
# Call "handle_ipc" for both data and EOF events
2707
GLib.io_add_watch(
2708
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2709
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2710
functools.partial(self.handle_ipc,
2711
parent_pipe=parent_pipe,
2712
proc=proc))
2713
2714
def handle_ipc(self, source, condition,
2715
parent_pipe=None,
2716
proc=None,
1507
gobject.io_add_watch(parent_pipe.fileno(),
1508
gobject.IO_IN | gobject.IO_HUP,
1509
functools.partial(self.handle_ipc,
1510
parent_pipe = parent_pipe))
1511
1512
def handle_ipc(self, source, condition, parent_pipe=None,
2717
1513
client_object=None):
2718
# error, or the other end of multiprocessing.Pipe has closed
2719
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2720
# Wait for other process to exit
2721
proc.join()
1514
condition_names = {
1515
gobject.IO_IN: "IN", # There is data to read.
1516
gobject.IO_OUT: "OUT", # Data can be written (without
1517
# blocking).
1518
gobject.IO_PRI: "PRI", # There is urgent data to read.
1519
gobject.IO_ERR: "ERR", # Error condition.
1520
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1521
# broken, usually for pipes and
1522
# sockets).
1523
}
1524
conditions_string = ' | '.join(name
1525
for cond, name in
1526
condition_names.iteritems()
1527
if cond & condition)
1528
# error or the other end of multiprocessing.Pipe has closed
1529
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2722
1530
return False
2723
1531
2724
1532
# Read a request from the child
2725
1533
request = parent_pipe.recv()
2726
1534
command = request[0]
2727
1535
2728
1536
if command == 'init':
2729
key_id = request[1].decode("ascii")
2730
fpr = request[2].decode("ascii")
2731
address = request[3]
2732
2733
for c in self.clients.values():
2734
if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"
2735
"27AE41E4649B934CA495991B7852B855"):
2736
continue
2737
if key_id and c.key_id == key_id:
2738
client = c
2739
break
2740
if fpr and c.fingerprint == fpr:
1537
fpr = request[1]
1538
address = request[2]
1539
1540
for c in self.clients:
1541
if c.fingerprint == fpr:
2741
1542
client = c
2742
1543
break
2743
1544
else:
2744
logger.info("Client not found for key ID: %s, address"
2745
": %s", key_id or fpr, address)
1545
logger.warning("Client not found for fingerprint: %s, ad"
1546
"dress: %s", fpr, address)
2746
1547
if self.use_dbus:
2747
1548
# Emit D-Bus signal
2748
mandos_dbus_service.ClientNotFound(key_id or fpr,
2749
address[0])
1549
mandos_dbus_service.ClientNotFound(fpr, address[0])
2750
1550
parent_pipe.send(False)
2751
1551
return False
2752
2753
GLib.io_add_watch(
2754
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2755
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2756
functools.partial(self.handle_ipc,
2757
parent_pipe=parent_pipe,
2758
proc=proc,
2759
client_object=client))
1552
1553
gobject.io_add_watch(parent_pipe.fileno(),
1554
gobject.IO_IN | gobject.IO_HUP,
1555
functools.partial(self.handle_ipc,
1556
parent_pipe = parent_pipe,
1557
client_object = client))
2760
1558
parent_pipe.send(True)
2761
# remove the old hook in favor of the new above hook on
2762
# same fileno
1559
# remove the old hook in favor of the new above hook on same fileno
2763
1560
return False
2764
1561
if command == 'funcall':
2765
1562
funcname = request[1]
2766
1563
args = request[2]
2767
1564
kwargs = request[3]
2768
2769
parent_pipe.send(('data', getattr(client_object,
2770
funcname)(*args,
2771
**kwargs)))
1565
1566
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2772
1567
2773
1568
if command == 'getattr':
2774
1569
attrname = request[1]
2775
if isinstance(client_object.__getattribute__(attrname),
2776
collections.abc.Callable):
2777
parent_pipe.send(('function', ))
1570
if callable(client_object.__getattribute__(attrname)):
1571
parent_pipe.send(('function',))
2778
1572
else:
2779
parent_pipe.send((
2780
'data', client_object.__getattribute__(attrname)))
2781
1573
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1574
2782
1575
if command == 'setattr':
2783
1576
attrname = request[1]
2784
1577
value = request[2]
2787
1580
return True
2788
1581
2789
1582
2790
def rfc3339_duration_to_delta(duration):
2791
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2792
2793
>>> timedelta = datetime.timedelta
2794
>>> rfc3339_duration_to_delta("P7D") == timedelta(7)
2795
True
2796
>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)
2797
True
2798
>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)
2799
True
2800
>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)
2801
True
2802
>>> rfc3339_duration_to_delta("P1W") == timedelta(7)
2803
True
2804
>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)
2805
True
2806
>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)
2807
True
2808
>>> del timedelta
2809
"""
2810
2811
# Parsing an RFC 3339 duration with regular expressions is not
2812
# possible - there would have to be multiple places for the same
2813
# values, like seconds. The current code, while more esoteric, is
2814
# cleaner without depending on a parsing library. If Python had a
2815
# built-in library for parsing we would use it, but we'd like to
2816
# avoid excessive use of external libraries.
2817
2818
# New type for defining tokens, syntax, and semantics all-in-one
2819
Token = collections.namedtuple("Token", (
2820
"regexp", # To match token; if "value" is not None, must have
2821
# a "group" containing digits
2822
"value", # datetime.timedelta or None
2823
"followers")) # Tokens valid after this token
2824
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2825
# the "duration" ABNF definition in RFC 3339, Appendix A.
2826
token_end = Token(re.compile(r"$"), None, frozenset())
2827
token_second = Token(re.compile(r"(\d+)S"),
2828
datetime.timedelta(seconds=1),
2829
frozenset((token_end, )))
2830
token_minute = Token(re.compile(r"(\d+)M"),
2831
datetime.timedelta(minutes=1),
2832
frozenset((token_second, token_end)))
2833
token_hour = Token(re.compile(r"(\d+)H"),
2834
datetime.timedelta(hours=1),
2835
frozenset((token_minute, token_end)))
2836
token_time = Token(re.compile(r"T"),
2837
None,
2838
frozenset((token_hour, token_minute,
2839
token_second)))
2840
token_day = Token(re.compile(r"(\d+)D"),
2841
datetime.timedelta(days=1),
2842
frozenset((token_time, token_end)))
2843
token_month = Token(re.compile(r"(\d+)M"),
2844
datetime.timedelta(weeks=4),
2845
frozenset((token_day, token_end)))
2846
token_year = Token(re.compile(r"(\d+)Y"),
2847
datetime.timedelta(weeks=52),
2848
frozenset((token_month, token_end)))
2849
token_week = Token(re.compile(r"(\d+)W"),
2850
datetime.timedelta(weeks=1),
2851
frozenset((token_end, )))
2852
token_duration = Token(re.compile(r"P"), None,
2853
frozenset((token_year, token_month,
2854
token_day, token_time,
2855
token_week)))
2856
# Define starting values:
2857
# Value so far
2858
value = datetime.timedelta()
2859
found_token = None
2860
# Following valid tokens
2861
followers = frozenset((token_duration, ))
2862
# String left to parse
2863
s = duration
2864
# Loop until end token is found
2865
while found_token is not token_end:
2866
# Search for any currently valid tokens
2867
for token in followers:
2868
match = token.regexp.match(s)
2869
if match is not None:
2870
# Token found
2871
if token.value is not None:
2872
# Value found, parse digits
2873
factor = int(match.group(1), 10)
2874
# Add to value so far
2875
value += factor * token.value
2876
# Strip token from string
2877
s = token.regexp.sub("", s, 1)
2878
# Go to found token
2879
found_token = token
2880
# Set valid next tokens
2881
followers = found_token.followers
2882
break
2883
else:
2884
# No currently valid tokens were found
2885
raise ValueError("Invalid RFC 3339 duration: {!r}"
2886
.format(duration))
2887
# End token found
2888
return value
2889
2890
2891
1583
def string_to_delta(interval):
2892
1584
"""Parse a string and return a datetime.timedelta
2893
2894
>>> string_to_delta('7d') == datetime.timedelta(7)
2895
True
2896
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2897
True
2898
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2899
True
2900
>>> string_to_delta('24h') == datetime.timedelta(1)
2901
True
2902
>>> string_to_delta('1w') == datetime.timedelta(7)
2903
True
2904
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2905
True
1585
1586
>>> string_to_delta('7d')
1587
datetime.timedelta(7)
1588
>>> string_to_delta('60s')
1589
datetime.timedelta(0, 60)
1590
>>> string_to_delta('60m')
1591
datetime.timedelta(0, 3600)
1592
>>> string_to_delta('24h')
1593
datetime.timedelta(1)
1594
>>> string_to_delta('1w')
1595
datetime.timedelta(7)
1596
>>> string_to_delta('5m 30s')
1597
datetime.timedelta(0, 330)
2906
1598
"""
2907
2908
try:
2909
return rfc3339_duration_to_delta(interval)
2910
except ValueError:
2911
pass
2912
2913
1599
timevalue = datetime.timedelta(0)
2914
1600
for s in interval.split():
2915
1601
try:
2916
suffix = s[-1]
1602
suffix = unicode(s[-1])
2917
1603
value = int(s[:-1])
2918
1604
if suffix == "d":
2919
1605
delta = datetime.timedelta(value)
2926
1612
elif suffix == "w":
2927
1613
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2928
1614
else:
2929
raise ValueError("Unknown suffix {!r}".format(suffix))
2930
except IndexError as e:
1615
raise ValueError("Unknown suffix %r" % suffix)
1616
except (ValueError, IndexError), e:
2931
1617
raise ValueError(*(e.args))
2932
1618
timevalue += delta
2933
1619
return timevalue
2934
1620
2935
1621
2936
def daemon(nochdir=False, noclose=False):
1622
def if_nametoindex(interface):
1623
"""Call the C function if_nametoindex(), or equivalent
1624
1625
Note: This function cannot accept a unicode string."""
1626
global if_nametoindex
1627
try:
1628
if_nametoindex = (ctypes.cdll.LoadLibrary
1629
(ctypes.util.find_library("c"))
1630
.if_nametoindex)
1631
except (OSError, AttributeError):
1632
logger.warning("Doing if_nametoindex the hard way")
1633
def if_nametoindex(interface):
1634
"Get an interface index the hard way, i.e. using fcntl()"
1635
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1636
with contextlib.closing(socket.socket()) as s:
1637
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1638
struct.pack(str("16s16x"),
1639
interface))
1640
interface_index = struct.unpack(str("I"),
1641
ifreq[16:20])[0]
1642
return interface_index
1643
return if_nametoindex(interface)
1644
1645
1646
def daemon(nochdir = False, noclose = False):
2937
1647
"""See daemon(3). Standard BSD Unix function.
2938
1648
2939
1649
This should really exist as os.daemon, but it doesn't (yet)."""
2940
1650
if os.fork():
2941
1651
sys.exit()
2946
1656
sys.exit()
2947
1657
if not noclose:
2948
1658
# Close all standard open file descriptors
2949
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1659
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2950
1660
if not stat.S_ISCHR(os.fstat(null).st_mode):
2951
1661
raise OSError(errno.ENODEV,
2952
"{} not a character device"
2953
.format(os.devnull))
1662
"%s not a character device"
1663
% os.path.devnull)
2954
1664
os.dup2(null, sys.stdin.fileno())
2955
1665
os.dup2(null, sys.stdout.fileno())
2956
1666
os.dup2(null, sys.stderr.fileno())
2959
1669
2960
1670
2961
1671
def main():
2962
1672
2963
1673
##################################################################
2964
1674
# Parsing of options, both command line and config file
2965
1675
2966
1676
parser = argparse.ArgumentParser()
2967
1677
parser.add_argument("-v", "--version", action="version",
2968
version="%(prog)s {}".format(version),
1678
version = "%%(prog)s %s" % version,
2969
1679
help="show version number and exit")
2970
1680
parser.add_argument("-i", "--interface", metavar="IF",
2971
1681
help="Bind to interface IF")
2977
1687
help="Run self-test")
2978
1688
parser.add_argument("--debug", action="store_true",
2979
1689
help="Debug mode; run in foreground and log"
2980
" to terminal", default=None)
1690
" to terminal")
2981
1691
parser.add_argument("--debuglevel", metavar="LEVEL",
2982
1692
help="Debug level for stdout output")
2983
1693
parser.add_argument("--priority", help="GnuTLS"
2990
1700
" files")
2991
1701
parser.add_argument("--no-dbus", action="store_false",
2992
1702
dest="use_dbus", help="Do not provide D-Bus"
2993
" system bus interface", default=None)
1703
" system bus interface")
2994
1704
parser.add_argument("--no-ipv6", action="store_false",
2995
dest="use_ipv6", help="Do not use IPv6",
2996
default=None)
2997
parser.add_argument("--no-restore", action="store_false",
2998
dest="restore", help="Do not restore stored"
2999
" state", default=None)
3000
parser.add_argument("--socket", type=int,
3001
help="Specify a file descriptor to a network"
3002
" socket to use instead of creating one")
3003
parser.add_argument("--statedir", metavar="DIR",
3004
help="Directory to save/restore state in")
3005
parser.add_argument("--foreground", action="store_true",
3006
help="Run in foreground", default=None)
3007
parser.add_argument("--no-zeroconf", action="store_false",
3008
dest="zeroconf", help="Do not use Zeroconf",
3009
default=None)
3010
1705
dest="use_ipv6", help="Do not use IPv6")
3011
1706
options = parser.parse_args()
3012
1707
1708
if options.check:
1709
import doctest
1710
doctest.testmod()
1711
sys.exit()
1712
3013
1713
# Default values for config file for server-global settings
3014
if gnutls.has_rawpk:
3015
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3016
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3017
else:
3018
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3019
":+SIGN-DSA-SHA256")
3020
server_defaults = {"interface": "",
3021
"address": "",
3022
"port": "",
3023
"debug": "False",
3024
"priority": priority,
3025
"servicename": "Mandos",
3026
"use_dbus": "True",
3027
"use_ipv6": "True",
3028
"debuglevel": "",
3029
"restore": "True",
3030
"socket": "",
3031
"statedir": "/var/lib/mandos",
3032
"foreground": "False",
3033
"zeroconf": "True",
3034
}
3035
del priority
3036
1714
server_defaults = { "interface": "",
1715
"address": "",
1716
"port": "",
1717
"debug": "False",
1718
"priority":
1719
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1720
"servicename": "Mandos",
1721
"use_dbus": "True",
1722
"use_ipv6": "True",
1723
"debuglevel": "",
1724
}
1725
3037
1726
# Parse config file for server-global settings
3038
server_config = configparser.ConfigParser(server_defaults)
1727
server_config = configparser.SafeConfigParser(server_defaults)
3039
1728
del server_defaults
3040
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3041
# Convert the ConfigParser object to a dict
1729
server_config.read(os.path.join(options.configdir,
1730
"mandos.conf"))
1731
# Convert the SafeConfigParser object to a dict
3042
1732
server_settings = server_config.defaults()
3043
1733
# Use the appropriate methods on the non-string config options
3044
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3045
"foreground", "zeroconf"):
1734
for option in ("debug", "use_dbus", "use_ipv6"):
3046
1735
server_settings[option] = server_config.getboolean("DEFAULT",
3047
1736
option)
3048
1737
if server_settings["port"]:
3049
1738
server_settings["port"] = server_config.getint("DEFAULT",
3050
1739
"port")
3051
if server_settings["socket"]:
3052
server_settings["socket"] = server_config.getint("DEFAULT",
3053
"socket")
3054
# Later, stdin will, and stdout and stderr might, be dup'ed
3055
# over with an opened os.devnull. But we don't want this to
3056
# happen with a supplied network socket.
3057
if 0 <= server_settings["socket"] <= 2:
3058
server_settings["socket"] = os.dup(server_settings
3059
["socket"])
3060
1740
del server_config
3061
1741
3062
1742
# Override the settings from the config file with command line
3063
1743
# options, if set.
3064
1744
for option in ("interface", "address", "port", "debug",
3065
"priority", "servicename", "configdir", "use_dbus",
3066
"use_ipv6", "debuglevel", "restore", "statedir",
3067
"socket", "foreground", "zeroconf"):
1745
"priority", "servicename", "configdir",
1746
"use_dbus", "use_ipv6", "debuglevel"):
3068
1747
value = getattr(options, option)
3069
1748
if value is not None:
3070
1749
server_settings[option] = value
3071
1750
del options
3072
1751
# Force all strings to be unicode
3073
1752
for option in server_settings.keys():
3074
if isinstance(server_settings[option], bytes):
3075
server_settings[option] = (server_settings[option]
3076
.decode("utf-8"))
3077
# Force all boolean options to be boolean
3078
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3079
"foreground", "zeroconf"):
3080
server_settings[option] = bool(server_settings[option])
3081
# Debug implies foreground
3082
if server_settings["debug"]:
3083
server_settings["foreground"] = True
1753
if type(server_settings[option]) is str:
1754
server_settings[option] = unicode(server_settings[option])
3084
1755
# Now we have our good server settings in "server_settings"
3085
1756
3086
1757
##################################################################
3087
3088
if (not server_settings["zeroconf"]
3089
and not (server_settings["port"]
3090
or server_settings["socket"] != "")):
3091
parser.error("Needs port or socket to work without Zeroconf")
3092
1758
3093
1759
# For convenience
3094
1760
debug = server_settings["debug"]
3095
1761
debuglevel = server_settings["debuglevel"]
3096
1762
use_dbus = server_settings["use_dbus"]
3097
1763
use_ipv6 = server_settings["use_ipv6"]
3098
stored_state_path = os.path.join(server_settings["statedir"],
3099
stored_state_file)
3100
foreground = server_settings["foreground"]
3101
zeroconf = server_settings["zeroconf"]
3102
3103
if debug:
3104
initlogger(debug, logging.DEBUG)
3105
else:
3106
if not debuglevel:
3107
initlogger(debug)
3108
else:
3109
level = getattr(logging, debuglevel.upper())
3110
initlogger(debug, level)
3111
1764
3112
1765
if server_settings["servicename"] != "Mandos":
3113
syslogger.setFormatter(
3114
logging.Formatter('Mandos ({}) [%(process)d]:'
3115
' %(levelname)s: %(message)s'.format(
3116
server_settings["servicename"])))
3117
1766
syslogger.setFormatter(logging.Formatter
1767
('Mandos (%s) [%%(process)d]:'
1768
' %%(levelname)s: %%(message)s'
1769
% server_settings["servicename"]))
1770
3118
1771
# Parse config file with clients
3119
client_config = configparser.ConfigParser(Client.client_defaults)
1772
client_defaults = { "timeout": "1h",
1773
"interval": "5m",
1774
"checker": "fping -q -- %%(host)s",
1775
"host": "",
1776
"approval_delay": "0s",
1777
"approval_duration": "1s",
1778
}
1779
client_config = configparser.SafeConfigParser(client_defaults)
3120
1780
client_config.read(os.path.join(server_settings["configdir"],
3121
1781
"clients.conf"))
3122
1782
3123
1783
global mandos_dbus_service
3124
1784
mandos_dbus_service = None
3125
3126
socketfd = None
3127
if server_settings["socket"] != "":
3128
socketfd = server_settings["socket"]
3129
tcp_server = MandosServer(
3130
(server_settings["address"], server_settings["port"]),
3131
ClientHandler,
3132
interface=(server_settings["interface"] or None),
3133
use_ipv6=use_ipv6,
3134
gnutls_priority=server_settings["priority"],
3135
use_dbus=use_dbus,
3136
socketfd=socketfd)
3137
if not foreground:
3138
pidfilename = "/run/mandos.pid"
3139
if not os.path.isdir("/run/."):
3140
pidfilename = "/var/run/mandos.pid"
3141
pidfile = None
3142
try:
3143
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3144
except IOError as e:
3145
logger.error("Could not open file %r", pidfilename,
3146
exc_info=e)
3147
3148
for name, group in (("_mandos", "_mandos"),
3149
("mandos", "mandos"),
3150
("nobody", "nogroup")):
3151
try:
3152
uid = pwd.getpwnam(name).pw_uid
3153
gid = pwd.getpwnam(group).pw_gid
3154
break
1785
1786
tcp_server = MandosServer((server_settings["address"],
1787
server_settings["port"]),
1788
ClientHandler,
1789
interface=(server_settings["interface"]
1790
or None),
1791
use_ipv6=use_ipv6,
1792
gnutls_priority=
1793
server_settings["priority"],
1794
use_dbus=use_dbus)
1795
if not debug:
1796
pidfilename = "/var/run/mandos.pid"
1797
try:
1798
pidfile = open(pidfilename, "w")
1799
except IOError:
1800
logger.error("Could not open file %r", pidfilename)
1801
1802
try:
1803
uid = pwd.getpwnam("_mandos").pw_uid
1804
gid = pwd.getpwnam("_mandos").pw_gid
1805
except KeyError:
1806
try:
1807
uid = pwd.getpwnam("mandos").pw_uid
1808
gid = pwd.getpwnam("mandos").pw_gid
3155
1809
except KeyError:
3156
continue
3157
else:
3158
uid = 65534
3159
gid = 65534
1810
try:
1811
uid = pwd.getpwnam("nobody").pw_uid
1812
gid = pwd.getpwnam("nobody").pw_gid
1813
except KeyError:
1814
uid = 65534
1815
gid = 65534
3160
1816
try:
3161
1817
os.setgid(gid)
3162
1818
os.setuid(uid)
3163
if debug:
3164
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3165
gid))
3166
except OSError as error:
3167
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3168
.format(uid, gid, os.strerror(error.errno)))
3169
if error.errno != errno.EPERM:
3170
raise
1819
except OSError, error:
1820
if error[0] != errno.EPERM:
1821
raise error
1822
1823
if not debug and not debuglevel:
1824
syslogger.setLevel(logging.WARNING)
1825
console.setLevel(logging.WARNING)
1826
if debuglevel:
1827
level = getattr(logging, debuglevel.upper())
1828
syslogger.setLevel(level)
1829
console.setLevel(level)
3171
1830
3172
1831
if debug:
3173
1832
# Enable all possible GnuTLS debugging
3174
1833
3175
1834
# "Use a log level over 10 to enable all debugging options."
3176
1835
# - GnuTLS manual
3177
gnutls.global_set_log_level(11)
3178
3179
@gnutls.log_func
1836
gnutls.library.functions.gnutls_global_set_log_level(11)
1837
1838
@gnutls.library.types.gnutls_log_func
3180
1839
def debug_gnutls(level, string):
3181
1840
logger.debug("GnuTLS: %s", string[:-1])
3182
3183
gnutls.global_set_log_function(debug_gnutls)
3184
1841
1842
(gnutls.library.functions
1843
.gnutls_global_set_log_function(debug_gnutls))
1844
3185
1845
# Redirect stdin so all checkers get /dev/null
3186
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1846
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3187
1847
os.dup2(null, sys.stdin.fileno())
3188
1848
if null > 2:
3189
1849
os.close(null)
3190
1850
else:
1851
# No console logging
1852
logger.removeHandler(console)
1853
3191
1854
# Need to fork before connecting to D-Bus
3192
if not foreground:
1855
if not debug:
3193
1856
# Close all input and output, do double fork, etc.
3194
1857
daemon()
3195
3196
if gi.version_info < (3, 10, 2):
3197
# multiprocessing will use threads, so before we use GLib we
3198
# need to inform GLib that threads will be used.
3199
GLib.threads_init()
3200
1858
3201
1859
global main_loop
3202
1860
# From the Avahi example code
3203
DBusGMainLoop(set_as_default=True)
3204
main_loop = GLib.MainLoop()
1861
DBusGMainLoop(set_as_default=True )
1862
main_loop = gobject.MainLoop()
3205
1863
bus = dbus.SystemBus()
3206
1864
# End of Avahi example code
3207
1865
if use_dbus:
3208
1866
try:
3209
bus_name = dbus.service.BusName("se.recompile.Mandos",
3210
bus,
3211
do_not_queue=True)
3212
old_bus_name = dbus.service.BusName(
3213
"se.bsnet.fukt.Mandos", bus,
3214
do_not_queue=True)
3215
except dbus.exceptions.DBusException as e:
3216
logger.error("Disabling D-Bus:", exc_info=e)
1867
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1868
bus, do_not_queue=True)
1869
except dbus.exceptions.NameExistsException, e:
1870
logger.error(unicode(e) + ", disabling D-Bus")
3217
1871
use_dbus = False
3218
1872
server_settings["use_dbus"] = False
3219
1873
tcp_server.use_dbus = False
3220
if zeroconf:
3221
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3222
service = AvahiServiceToSyslog(
3223
name=server_settings["servicename"],
3224
servicetype="_mandos._tcp",
3225
protocol=protocol,
3226
bus=bus)
3227
if server_settings["interface"]:
3228
service.interface = if_nametoindex(
3229
server_settings["interface"].encode("utf-8"))
3230
1874
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1875
service = AvahiService(name = server_settings["servicename"],
1876
servicetype = "_mandos._tcp",
1877
protocol = protocol, bus = bus)
1878
if server_settings["interface"]:
1879
service.interface = (if_nametoindex
1880
(str(server_settings["interface"])))
1881
3231
1882
global multiprocessing_manager
3232
1883
multiprocessing_manager = multiprocessing.Manager()
3233
1884
3234
1885
client_class = Client
3235
1886
if use_dbus:
3236
client_class = functools.partial(ClientDBus, bus=bus)
3237
3238
client_settings = Client.config_parser(client_config)
3239
old_client_settings = {}
3240
clients_data = {}
3241
3242
# This is used to redirect stdout and stderr for checker processes
3243
global wnull
3244
wnull = open(os.devnull, "w") # A writable /dev/null
3245
# Only used if server is running in foreground but not in debug
3246
# mode
3247
if debug or not foreground:
3248
wnull.close()
3249
3250
# Get client data and settings from last running state.
3251
if server_settings["restore"]:
3252
try:
3253
with open(stored_state_path, "rb") as stored_state:
3254
if sys.version_info.major == 2:
3255
clients_data, old_client_settings = pickle.load(
3256
stored_state)
3257
else:
3258
bytes_clients_data, bytes_old_client_settings = (
3259
pickle.load(stored_state, encoding="bytes"))
3260
# Fix bytes to strings
3261
# clients_data
3262
# .keys()
3263
clients_data = {(key.decode("utf-8")
3264
if isinstance(key, bytes)
3265
else key): value
3266
for key, value in
3267
bytes_clients_data.items()}
3268
del bytes_clients_data
3269
for key in clients_data:
3270
value = {(k.decode("utf-8")
3271
if isinstance(k, bytes) else k): v
3272
for k, v in
3273
clients_data[key].items()}
3274
clients_data[key] = value
3275
# .client_structure
3276
value["client_structure"] = [
3277
(s.decode("utf-8")
3278
if isinstance(s, bytes)
3279
else s) for s in
3280
value["client_structure"]]
3281
# .name, .host, and .checker_command
3282
for k in ("name", "host", "checker_command"):
3283
if isinstance(value[k], bytes):
3284
value[k] = value[k].decode("utf-8")
3285
if "key_id" not in value:
3286
value["key_id"] = ""
3287
elif "fingerprint" not in value:
3288
value["fingerprint"] = ""
3289
# old_client_settings
3290
# .keys()
3291
old_client_settings = {
3292
(key.decode("utf-8")
3293
if isinstance(key, bytes)
3294
else key): value
3295
for key, value in
3296
bytes_old_client_settings.items()}
3297
del bytes_old_client_settings
3298
# .host and .checker_command
3299
for value in old_client_settings.values():
3300
for attribute in ("host", "checker_command"):
3301
if isinstance(value[attribute], bytes):
3302
value[attribute] = (value[attribute]
3303
.decode("utf-8"))
3304
os.remove(stored_state_path)
3305
except IOError as e:
3306
if e.errno == errno.ENOENT:
3307
logger.warning("Could not load persistent state:"
3308
" {}".format(os.strerror(e.errno)))
3309
else:
3310
logger.critical("Could not load persistent state:",
3311
exc_info=e)
3312
raise
3313
except EOFError as e:
3314
logger.warning("Could not load persistent state: "
3315
"EOFError:",
3316
exc_info=e)
3317
3318
with PGPEngine() as pgp:
3319
for client_name, client in clients_data.items():
3320
# Skip removed clients
3321
if client_name not in client_settings:
3322
continue
3323
3324
# Decide which value to use after restoring saved state.
3325
# We have three different values: Old config file,
3326
# new config file, and saved state.
3327
# New config value takes precedence if it differs from old
3328
# config value, otherwise use saved state.
3329
for name, value in client_settings[client_name].items():
3330
try:
3331
# For each value in new config, check if it
3332
# differs from the old config value (Except for
3333
# the "secret" attribute)
3334
if (name != "secret"
3335
and (value !=
3336
old_client_settings[client_name][name])):
3337
client[name] = value
3338
except KeyError:
3339
pass
3340
3341
# Clients who has passed its expire date can still be
3342
# enabled if its last checker was successful. A Client
3343
# whose checker succeeded before we stored its state is
3344
# assumed to have successfully run all checkers during
3345
# downtime.
3346
if client["enabled"]:
3347
if datetime.datetime.utcnow() >= client["expires"]:
3348
if not client["last_checked_ok"]:
3349
logger.warning(
3350
"disabling client {} - Client never "
3351
"performed a successful checker".format(
3352
client_name))
3353
client["enabled"] = False
3354
elif client["last_checker_status"] != 0:
3355
logger.warning(
3356
"disabling client {} - Client last"
3357
" checker failed with error code"
3358
" {}".format(
3359
client_name,
3360
client["last_checker_status"]))
3361
client["enabled"] = False
3362
else:
3363
client["expires"] = (
3364
datetime.datetime.utcnow()
3365
+ client["timeout"])
3366
logger.debug("Last checker succeeded,"
3367
" keeping {} enabled".format(
3368
client_name))
1887
client_class = functools.partial(ClientDBus, bus = bus)
1888
def client_config_items(config, section):
1889
special_settings = {
1890
"approved_by_default":
1891
lambda: config.getboolean(section,
1892
"approved_by_default"),
1893
}
1894
for name, value in config.items(section):
3369
1895
try:
3370
client["secret"] = pgp.decrypt(
3371
client["encrypted_secret"],
3372
client_settings[client_name]["secret"])
3373
except PGPError:
3374
# If decryption fails, we use secret from new settings
3375
logger.debug("Failed to decrypt {} old secret".format(
3376
client_name))
3377
client["secret"] = (client_settings[client_name]
3378
["secret"])
3379
3380
# Add/remove clients based on new changes made to config
3381
for client_name in (set(old_client_settings)
3382
- set(client_settings)):
3383
del clients_data[client_name]
3384
for client_name in (set(client_settings)
3385
- set(old_client_settings)):
3386
clients_data[client_name] = client_settings[client_name]
3387
3388
# Create all client objects
3389
for client_name, client in clients_data.items():
3390
tcp_server.clients[client_name] = client_class(
3391
name=client_name,
3392
settings=client,
3393
server_settings=server_settings)
3394
1896
yield (name, special_settings[name]())
1897
except KeyError:
1898
yield (name, value)
1899
1900
tcp_server.clients.update(set(
1901
client_class(name = section,
1902
config= dict(client_config_items(
1903
client_config, section)))
1904
for section in client_config.sections()))
3395
1905
if not tcp_server.clients:
3396
1906
logger.warning("No clients defined")
3397
3398
if not foreground:
3399
if pidfile is not None:
3400
pid = os.getpid()
3401
try:
3402
with pidfile:
3403
print(pid, file=pidfile)
3404
except IOError:
3405
logger.error("Could not write to file %r with PID %d",
3406
pidfilename, pid)
3407
del pidfile
1907
1908
if not debug:
1909
try:
1910
with pidfile:
1911
pid = os.getpid()
1912
pidfile.write(str(pid) + "\n".encode("utf-8"))
1913
del pidfile
1914
except IOError:
1915
logger.error("Could not write to file %r with PID %d",
1916
pidfilename, pid)
1917
except NameError:
1918
# "pidfile" was never created
1919
pass
3408
1920
del pidfilename
3409
3410
for termsig in (signal.SIGHUP, signal.SIGTERM):
3411
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3412
lambda: main_loop.quit() and False)
3413
1921
1922
signal.signal(signal.SIGINT, signal.SIG_IGN)
1923
1924
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1925
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1926
3414
1927
if use_dbus:
3415
3416
@alternate_dbus_interfaces(
3417
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3418
class MandosDBusService(DBusObjectWithObjectManager):
1928
class MandosDBusService(dbus.service.Object):
3419
1929
"""A D-Bus proxy object"""
3420
3421
1930
def __init__(self):
3422
1931
dbus.service.Object.__init__(self, bus, "/")
3423
3424
_interface = "se.recompile.Mandos"
3425
1932
_interface = "se.bsnet.fukt.Mandos"
1933
3426
1934
@dbus.service.signal(_interface, signature="o")
3427
1935
def ClientAdded(self, objpath):
3428
1936
"D-Bus signal"
3429
1937
pass
3430
1938
3431
1939
@dbus.service.signal(_interface, signature="ss")
3432
def ClientNotFound(self, key_id, address):
1940
def ClientNotFound(self, fingerprint, address):
3433
1941
"D-Bus signal"
3434
1942
pass
3435
3436
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3437
"true"})
1943
3438
1944
@dbus.service.signal(_interface, signature="os")
3439
1945
def ClientRemoved(self, objpath, name):
3440
1946
"D-Bus signal"
3441
1947
pass
3442
3443
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3444
"true"})
1948
3445
1949
@dbus.service.method(_interface, out_signature="ao")
3446
1950
def GetAllClients(self):
3447
1951
"D-Bus method"
3448
return dbus.Array(c.dbus_object_path for c in
3449
tcp_server.clients.values())
3450
3451
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3452
"true"})
1952
return dbus.Array(c.dbus_object_path
1953
for c in tcp_server.clients)
1954
3453
1955
@dbus.service.method(_interface,
3454
1956
out_signature="a{oa{sv}}")
3455
1957
def GetAllClientsWithProperties(self):
3456
1958
"D-Bus method"
3457
1959
return dbus.Dictionary(
3458
{c.dbus_object_path: c.GetAll(
3459
"se.recompile.Mandos.Client")
3460
for c in tcp_server.clients.values()},
1960
((c.dbus_object_path, c.GetAll(""))
1961
for c in tcp_server.clients),
3461
1962
signature="oa{sv}")
3462
1963
3463
1964
@dbus.service.method(_interface, in_signature="o")
3464
1965
def RemoveClient(self, object_path):
3465
1966
"D-Bus method"
3466
for c in tcp_server.clients.values():
1967
for c in tcp_server.clients:
3467
1968
if c.dbus_object_path == object_path:
3468
del tcp_server.clients[c.name]
1969
tcp_server.clients.remove(c)
3469
1970
c.remove_from_connection()
3470
# Don't signal the disabling
1971
# Don't signal anything except ClientRemoved
3471
1972
c.disable(quiet=True)
3472
# Emit D-Bus signal for removal
3473
self.client_removed_signal(c)
1973
# Emit D-Bus signal
1974
self.ClientRemoved(object_path, c.name)
3474
1975
return
3475
1976
raise KeyError(object_path)
3476
1977
3477
1978
del _interface
3478
3479
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3480
out_signature="a{oa{sa{sv}}}")
3481
def GetManagedObjects(self):
3482
"""D-Bus method"""
3483
return dbus.Dictionary(
3484
{client.dbus_object_path:
3485
dbus.Dictionary(
3486
{interface: client.GetAll(interface)
3487
for interface in
3488
client._get_all_interface_names()})
3489
for client in tcp_server.clients.values()})
3490
3491
def client_added_signal(self, client):
3492
"""Send the new standard signal and the old signal"""
3493
if use_dbus:
3494
# New standard signal
3495
self.InterfacesAdded(
3496
client.dbus_object_path,
3497
dbus.Dictionary(
3498
{interface: client.GetAll(interface)
3499
for interface in
3500
client._get_all_interface_names()}))
3501
# Old signal
3502
self.ClientAdded(client.dbus_object_path)
3503
3504
def client_removed_signal(self, client):
3505
"""Send the new standard signal and the old signal"""
3506
if use_dbus:
3507
# New standard signal
3508
self.InterfacesRemoved(
3509
client.dbus_object_path,
3510
client._get_all_interface_names())
3511
# Old signal
3512
self.ClientRemoved(client.dbus_object_path,
3513
client.name)
3514
1979
3515
1980
mandos_dbus_service = MandosDBusService()
3516
3517
# Save modules to variables to exempt the modules from being
3518
# unloaded before the function registered with atexit() is run.
3519
mp = multiprocessing
3520
wn = wnull
3521
1981
3522
1982
def cleanup():
3523
1983
"Cleanup function; run on exit"
3524
if zeroconf:
3525
service.cleanup()
3526
3527
mp.active_children()
3528
wn.close()
3529
if not (tcp_server.clients or client_settings):
3530
return
3531
3532
# Store client before exiting. Secrets are encrypted with key
3533
# based on what config file has. If config file is
3534
# removed/edited, old secret will thus be unrecovable.
3535
clients = {}
3536
with PGPEngine() as pgp:
3537
for client in tcp_server.clients.values():
3538
key = client_settings[client.name]["secret"]
3539
client.encrypted_secret = pgp.encrypt(client.secret,
3540
key)
3541
client_dict = {}
3542
3543
# A list of attributes that can not be pickled
3544
# + secret.
3545
exclude = {"bus", "changedstate", "secret",
3546
"checker", "server_settings"}
3547
for name, typ in inspect.getmembers(dbus.service
3548
.Object):
3549
exclude.add(name)
3550
3551
client_dict["encrypted_secret"] = (client
3552
.encrypted_secret)
3553
for attr in client.client_structure:
3554
if attr not in exclude:
3555
client_dict[attr] = getattr(client, attr)
3556
3557
clients[client.name] = client_dict
3558
del client_settings[client.name]["secret"]
3559
3560
try:
3561
with tempfile.NamedTemporaryFile(
3562
mode='wb',
3563
suffix=".pickle",
3564
prefix='clients-',
3565
dir=os.path.dirname(stored_state_path),
3566
delete=False) as stored_state:
3567
pickle.dump((clients, client_settings), stored_state,
3568
protocol=2)
3569
tempname = stored_state.name
3570
os.rename(tempname, stored_state_path)
3571
except (IOError, OSError) as e:
3572
if not debug:
3573
try:
3574
os.remove(tempname)
3575
except NameError:
3576
pass
3577
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3578
logger.warning("Could not save persistent state: {}"
3579
.format(os.strerror(e.errno)))
3580
else:
3581
logger.warning("Could not save persistent state:",
3582
exc_info=e)
3583
raise
3584
3585
# Delete all clients, and settings from config
1984
service.cleanup()
1985
3586
1986
while tcp_server.clients:
3587
name, client = tcp_server.clients.popitem()
1987
client = tcp_server.clients.pop()
3588
1988
if use_dbus:
3589
1989
client.remove_from_connection()
3590
# Don't signal the disabling
1990
client.disable_hook = None
1991
# Don't signal anything except ClientRemoved
3591
1992
client.disable(quiet=True)
3592
# Emit D-Bus signal for removal
3593
1993
if use_dbus:
3594
mandos_dbus_service.client_removed_signal(client)
3595
client_settings.clear()
3596
1994
# Emit D-Bus signal
1995
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1996
client.name)
1997
3597
1998
atexit.register(cleanup)
3598
3599
for client in tcp_server.clients.values():
1999
2000
for client in tcp_server.clients:
3600
2001
if use_dbus:
3601
# Emit D-Bus signal for adding
3602
mandos_dbus_service.client_added_signal(client)
3603
# Need to initiate checking of clients
3604
if client.enabled:
3605
client.init_checker()
3606
2002
# Emit D-Bus signal
2003
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2004
client.enable()
2005
3607
2006
tcp_server.enable()
3608
2007
tcp_server.server_activate()
3609
2008
3610
2009
# Find out what port we got
3611
if zeroconf:
3612
service.port = tcp_server.socket.getsockname()[1]
2010
service.port = tcp_server.socket.getsockname()[1]
3613
2011
if use_ipv6:
3614
2012
logger.info("Now listening on address %r, port %d,"
3615
" flowinfo %d, scope_id %d",
3616
*tcp_server.socket.getsockname())
2013
" flowinfo %d, scope_id %d"
2014
% tcp_server.socket.getsockname())
3617
2015
else: # IPv4
3618
logger.info("Now listening on address %r, port %d",
3619
*tcp_server.socket.getsockname())
3620
3621
# service.interface = tcp_server.socket.getsockname()[3]
3622
2016
logger.info("Now listening on address %r, port %d"
2017
% tcp_server.socket.getsockname())
2018
2019
#service.interface = tcp_server.socket.getsockname()[3]
2020
3623
2021
try:
3624
if zeroconf:
3625
# From the Avahi example code
3626
try:
3627
service.activate()
3628
except dbus.exceptions.DBusException as error:
3629
logger.critical("D-Bus Exception", exc_info=error)
3630
cleanup()
3631
sys.exit(1)
3632
# End of Avahi example code
3633
3634
GLib.io_add_watch(
3635
GLib.IOChannel.unix_new(tcp_server.fileno()),
3636
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3637
lambda *args, **kwargs: (tcp_server.handle_request
3638
(*args[2:], **kwargs) or True))
3639
2022
# From the Avahi example code
2023
try:
2024
service.activate()
2025
except dbus.exceptions.DBusException, error:
2026
logger.critical("DBusException: %s", error)
2027
cleanup()
2028
sys.exit(1)
2029
# End of Avahi example code
2030
2031
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2032
lambda *args, **kwargs:
2033
(tcp_server.handle_request
2034
(*args[2:], **kwargs) or True))
2035
3640
2036
logger.debug("Starting main loop")
3641
2037
main_loop.run()
3642
except AvahiError as error:
3643
logger.critical("Avahi Error", exc_info=error)
2038
except AvahiError, error:
2039
logger.critical("AvahiError: %s", error)
3644
2040
cleanup()
3645
2041
sys.exit(1)
3646
2042
except KeyboardInterrupt:
3651
2047
# Must run before the D-Bus bus name gets deregistered
3652
2048
cleanup()
3653
2049
3654
3655
def should_only_run_tests():
3656
parser = argparse.ArgumentParser(add_help=False)
3657
parser.add_argument("--check", action='store_true')
3658
args, unknown_args = parser.parse_known_args()
3659
run_tests = args.check
3660
if run_tests:
3661
# Remove --check argument from sys.argv
3662
sys.argv[1:] = unknown_args
3663
return run_tests
3664
3665
# Add all tests from doctest strings
3666
def load_tests(loader, tests, none):
3667
import doctest
3668
tests.addTests(doctest.DocTestSuite())
3669
return tests
3670
3671
2050
if __name__ == '__main__':
3672
try:
3673
if should_only_run_tests():
3674
# Call using ./mandos --check [--verbose]
3675
unittest.main()
3676
else:
3677
main()
3678
finally:
3679
logging.shutdown()
2051
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0