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- Committer: Teddy Hogeborn
- Date: 2011-11-14 20:55:32 UTC
- mfrom: (505.2.6 mandos-client-network-hooks)
- mto: (505.2.7 mandos-client-network-hooks)
- mto: This revision was merged to the branch mainline in revision 525.
- Revision ID: teddy@recompile.se-20111114205532-vzgr6a301z57guex
* plugins.d/mandos-client.c: Merge unified printing system.
- 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
# -*- coding: utf-8; lexical-binding: t -*-
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 © 2008-2022 Teddy Hogeborn
15
# Copyright © 2008-2022 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
#
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
32
31
# Contact the authors at <mandos@recompile.se>.
33
#
32
#
33
34
34
from __future__ import (division, absolute_import, print_function,
35
35
unicode_literals)
36
36
37
try:
38
from future_builtins import *
39
except ImportError:
40
pass
41
42
import sys
43
import unittest
37
import SocketServer as socketserver
38
import socket
44
39
import argparse
45
import logging
46
import os
47
try:
48
import SocketServer as socketserver
49
except ImportError:
50
import socketserver
51
import socket
52
40
import datetime
53
41
import errno
54
try:
55
import ConfigParser as configparser
56
except ImportError:
57
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
49
import sys
58
50
import re
51
import os
59
52
import signal
60
53
import subprocess
61
54
import atexit
62
55
import stat
56
import logging
63
57
import logging.handlers
64
58
import pwd
65
59
import contextlib
66
60
import struct
67
61
import fcntl
68
62
import functools
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
63
import cPickle as pickle
73
64
import multiprocessing
74
65
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
80
import random
81
import shlex
82
66
83
67
import dbus
84
68
import dbus.service
85
import gi
86
from gi.repository import GLib
69
import gobject
70
import avahi
87
71
from dbus.mainloop.glib import DBusGMainLoop
88
72
import ctypes
89
73
import ctypes.util
90
74
import xml.dom.minidom
91
75
import inspect
92
76
93
if sys.version_info.major == 2:
94
__metaclass__ = type
95
str = unicode
96
input = raw_input
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:
77
try:
122
78
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
123
79
except AttributeError:
124
80
try:
125
# This is where SO_BINDTODEVICE was up to and including Python
126
# 2.6, and also 3.2:
127
81
from IN import SO_BINDTODEVICE
128
82
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 = "1.8.16"
147
stored_state_file = "clients.pickle"
148
149
log = logging.getLogger(os.path.basename(sys.argv[0]))
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
log.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
log.addHandler(console)
203
log.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
83
SO_BINDTODEVICE = None
84
85
86
version = "1.4.1"
87
88
#logger = logging.getLogger('mandos')
89
logger = logging.Logger('mandos')
90
syslogger = (logging.handlers.SysLogHandler
91
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
92
address = str("/dev/log")))
93
syslogger.setFormatter(logging.Formatter
94
('Mandos [%(process)d]: %(levelname)s:'
95
' %(message)s'))
96
logger.addHandler(syslogger)
97
98
console = logging.StreamHandler()
99
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
100
' %(levelname)s:'
101
' %(message)s'))
102
logger.addHandler(console)
331
103
332
104
class AvahiError(Exception):
333
105
def __init__(self, value, *args, **kwargs):
334
106
self.value = value
335
return super(AvahiError, self).__init__(value, *args,
336
**kwargs)
337
107
super(AvahiError, self).__init__(value, *args, **kwargs)
108
def __unicode__(self):
109
return unicode(repr(self.value))
338
110
339
111
class AvahiServiceError(AvahiError):
340
112
pass
341
113
342
343
114
class AvahiGroupError(AvahiError):
344
115
pass
345
116
346
117
347
class AvahiService:
118
class AvahiService(object):
348
119
"""An Avahi (Zeroconf) service.
349
120
350
121
Attributes:
351
122
interface: integer; avahi.IF_UNSPEC or an interface index.
352
123
Used to optionally bind to the specified interface.
353
name: string; Example: "Mandos"
354
type: string; Example: "_mandos._tcp".
355
See <https://www.iana.org/assignments/service-names-port-numbers>
124
name: string; Example: 'Mandos'
125
type: string; Example: '_mandos._tcp'.
126
See <http://www.dns-sd.org/ServiceTypes.html>
356
127
port: integer; what port to announce
357
128
TXT: list of strings; TXT record for the service
358
129
domain: string; Domain to publish on, default to .local if empty.
364
135
server: D-Bus Server
365
136
bus: dbus.SystemBus()
366
137
"""
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):
138
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
139
servicetype = None, port = None, TXT = None,
140
domain = "", host = "", max_renames = 32768,
141
protocol = avahi.PROTO_UNSPEC, bus = None):
379
142
self.interface = interface
380
143
self.name = name
381
144
self.type = servicetype
390
153
self.server = None
391
154
self.bus = bus
392
155
self.entry_group_state_changed_match = None
393
394
def rename(self, remove=True):
156
def rename(self):
395
157
"""Derived from the Avahi example code"""
396
158
if self.rename_count >= self.max_renames:
397
log.critical("No suitable Zeroconf service name found"
398
" after %i retries, exiting.",
399
self.rename_count)
159
logger.critical("No suitable Zeroconf service name found"
160
" after %i retries, exiting.",
161
self.rename_count)
400
162
raise AvahiServiceError("Too many renames")
401
self.name = str(
402
self.server.GetAlternativeServiceName(self.name))
163
self.name = unicode(self.server
164
.GetAlternativeServiceName(self.name))
165
logger.info("Changing Zeroconf service name to %r ...",
166
self.name)
167
syslogger.setFormatter(logging.Formatter
168
('Mandos (%s) [%%(process)d]:'
169
' %%(levelname)s: %%(message)s'
170
% self.name))
171
self.remove()
172
try:
173
self.add()
174
except dbus.exceptions.DBusException as error:
175
logger.critical("DBusException: %s", error)
176
self.cleanup()
177
os._exit(1)
403
178
self.rename_count += 1
404
log.info("Changing Zeroconf service name to %r ...",
405
self.name)
406
if remove:
407
self.remove()
408
try:
409
self.add()
410
except dbus.exceptions.DBusException as error:
411
if (error.get_dbus_name()
412
== "org.freedesktop.Avahi.CollisionError"):
413
log.info("Local Zeroconf service name collision.")
414
return self.rename(remove=False)
415
else:
416
log.critical("D-Bus Exception", exc_info=error)
417
self.cleanup()
418
os._exit(1)
419
420
179
def remove(self):
421
180
"""Derived from the Avahi example code"""
422
181
if self.entry_group_state_changed_match is not None:
424
183
self.entry_group_state_changed_match = None
425
184
if self.group is not None:
426
185
self.group.Reset()
427
428
186
def add(self):
429
187
"""Derived from the Avahi example code"""
430
188
self.remove()
435
193
avahi.DBUS_INTERFACE_ENTRY_GROUP)
436
194
self.entry_group_state_changed_match = (
437
195
self.group.connect_to_signal(
438
"StateChanged", self.entry_group_state_changed))
439
log.debug("Adding Zeroconf service '%s' of type '%s' ...",
440
self.name, self.type)
196
'StateChanged', self .entry_group_state_changed))
197
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
198
self.name, self.type)
441
199
self.group.AddService(
442
200
self.interface,
443
201
self.protocol,
447
205
dbus.UInt16(self.port),
448
206
avahi.string_array_to_txt_array(self.TXT))
449
207
self.group.Commit()
450
451
208
def entry_group_state_changed(self, state, error):
452
209
"""Derived from the Avahi example code"""
453
log.debug("Avahi entry group state change: %i", state)
454
210
logger.debug("Avahi entry group state change: %i", state)
211
455
212
if state == avahi.ENTRY_GROUP_ESTABLISHED:
456
log.debug("Zeroconf service established.")
213
logger.debug("Zeroconf service established.")
457
214
elif state == avahi.ENTRY_GROUP_COLLISION:
458
log.info("Zeroconf service name collision.")
215
logger.info("Zeroconf service name collision.")
459
216
self.rename()
460
217
elif state == avahi.ENTRY_GROUP_FAILURE:
461
log.critical("Avahi: Error in group state changed %s",
462
str(error))
463
raise AvahiGroupError("State changed: {!s}".format(error))
464
218
logger.critical("Avahi: Error in group state changed %s",
219
unicode(error))
220
raise AvahiGroupError("State changed: %s"
221
% unicode(error))
465
222
def cleanup(self):
466
223
"""Derived from the Avahi example code"""
467
224
if self.group is not None:
468
225
try:
469
226
self.group.Free()
470
227
except (dbus.exceptions.UnknownMethodException,
471
dbus.exceptions.DBusException):
228
dbus.exceptions.DBusException) as e:
472
229
pass
473
230
self.group = None
474
231
self.remove()
475
476
232
def server_state_changed(self, state, error=None):
477
233
"""Derived from the Avahi example code"""
478
log.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
}
234
logger.debug("Avahi server state change: %i", state)
235
bad_states = { avahi.SERVER_INVALID:
236
"Zeroconf server invalid",
237
avahi.SERVER_REGISTERING: None,
238
avahi.SERVER_COLLISION:
239
"Zeroconf server name collision",
240
avahi.SERVER_FAILURE:
241
"Zeroconf server failure" }
485
242
if state in bad_states:
486
243
if bad_states[state] is not None:
487
244
if error is None:
488
log.error(bad_states[state])
245
logger.error(bad_states[state])
489
246
else:
490
log.error(bad_states[state] + ": %r", error)
247
logger.error(bad_states[state] + ": %r", error)
491
248
self.cleanup()
492
249
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
log.info("Local Zeroconf service name collision.")
499
return self.rename(remove=False)
500
else:
501
log.critical("D-Bus Exception", exc_info=error)
502
self.cleanup()
503
os._exit(1)
250
self.add()
504
251
else:
505
252
if error is None:
506
log.debug("Unknown state: %r", state)
253
logger.debug("Unknown state: %r", state)
507
254
else:
508
log.debug("Unknown state: %r: %r", state, error)
509
255
logger.debug("Unknown state: %r: %r", state, error)
510
256
def activate(self):
511
257
"""Derived from the Avahi example code"""
512
258
if self.server is None:
516
262
follow_name_owner_changes=True),
517
263
avahi.DBUS_INTERFACE_SERVER)
518
264
self.server.connect_to_signal("StateChanged",
519
self.server_state_changed)
265
self.server_state_changed)
520
266
self.server_state_changed(self.server.GetState())
521
267
522
268
523
class AvahiServiceToSyslog(AvahiService):
524
def rename(self, *args, **kwargs):
525
"""Add the new name to the syslog messages"""
526
ret = super(AvahiServiceToSyslog, self).rename(*args,
527
**kwargs)
528
syslogger.setFormatter(logging.Formatter(
529
"Mandos ({}) [%(process)d]: %(levelname)s: %(message)s"
530
.format(self.name)))
531
return ret
532
533
534
# Pretend that we have a GnuTLS module
535
class gnutls:
536
"""This isn't so much a class as it is a module-like namespace."""
537
538
library = ctypes.util.find_library("gnutls")
539
if library is None:
540
library = ctypes.util.find_library("gnutls-deb0")
541
_library = ctypes.cdll.LoadLibrary(library)
542
del library
543
544
# Unless otherwise indicated, the constants and types below are
545
# all from the gnutls/gnutls.h C header file.
546
547
# Constants
548
E_SUCCESS = 0
549
E_INTERRUPTED = -52
550
E_AGAIN = -28
551
CRT_OPENPGP = 2
552
CRT_RAWPK = 3
553
CLIENT = 2
554
SHUT_RDWR = 0
555
CRD_CERTIFICATE = 1
556
E_NO_CERTIFICATE_FOUND = -49
557
X509_FMT_DER = 0
558
NO_TICKETS = 1<<10
559
ENABLE_RAWPK = 1<<18
560
CTYPE_PEERS = 3
561
KEYID_USE_SHA256 = 1 # gnutls/x509.h
562
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
563
564
# Types
565
class _session_int(ctypes.Structure):
566
_fields_ = []
567
session_t = ctypes.POINTER(_session_int)
568
569
class certificate_credentials_st(ctypes.Structure):
570
_fields_ = []
571
certificate_credentials_t = ctypes.POINTER(
572
certificate_credentials_st)
573
certificate_type_t = ctypes.c_int
574
575
class datum_t(ctypes.Structure):
576
_fields_ = [("data", ctypes.POINTER(ctypes.c_ubyte)),
577
("size", ctypes.c_uint)]
578
579
class _openpgp_crt_int(ctypes.Structure):
580
_fields_ = []
581
openpgp_crt_t = ctypes.POINTER(_openpgp_crt_int)
582
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
583
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
584
credentials_type_t = ctypes.c_int
585
transport_ptr_t = ctypes.c_void_p
586
close_request_t = ctypes.c_int
587
588
# Exceptions
589
class Error(Exception):
590
def __init__(self, message=None, code=None, args=()):
591
# Default usage is by a message string, but if a return
592
# code is passed, convert it to a string with
593
# gnutls.strerror()
594
self.code = code
595
if message is None and code is not None:
596
message = gnutls.strerror(code).decode(
597
"utf-8", errors="replace")
598
return super(gnutls.Error, self).__init__(
599
message, *args)
600
601
class CertificateSecurityError(Error):
602
pass
603
604
class PointerTo:
605
def __init__(self, cls):
606
self.cls = cls
607
608
def from_param(self, obj):
609
if not isinstance(obj, self.cls):
610
raise TypeError("Not of type {}: {!r}"
611
.format(self.cls.__name__, obj))
612
return ctypes.byref(obj.from_param(obj))
613
614
class CastToVoidPointer:
615
def __init__(self, cls):
616
self.cls = cls
617
618
def from_param(self, obj):
619
if not isinstance(obj, self.cls):
620
raise TypeError("Not of type {}: {!r}"
621
.format(self.cls.__name__, obj))
622
return ctypes.cast(obj.from_param(obj), ctypes.c_void_p)
623
624
class With_from_param:
625
@classmethod
626
def from_param(cls, obj):
627
return obj._as_parameter_
628
629
# Classes
630
class Credentials(With_from_param):
631
def __init__(self):
632
self._as_parameter_ = gnutls.certificate_credentials_t()
633
gnutls.certificate_allocate_credentials(self)
634
self.type = gnutls.CRD_CERTIFICATE
635
636
def __del__(self):
637
gnutls.certificate_free_credentials(self)
638
639
class ClientSession(With_from_param):
640
def __init__(self, socket, credentials=None):
641
self._as_parameter_ = gnutls.session_t()
642
gnutls_flags = gnutls.CLIENT
643
if gnutls.check_version(b"3.5.6"):
644
gnutls_flags |= gnutls.NO_TICKETS
645
if gnutls.has_rawpk:
646
gnutls_flags |= gnutls.ENABLE_RAWPK
647
gnutls.init(self, gnutls_flags)
648
del gnutls_flags
649
gnutls.set_default_priority(self)
650
gnutls.transport_set_ptr(self, socket.fileno())
651
gnutls.handshake_set_private_extensions(self, True)
652
self.socket = socket
653
if credentials is None:
654
credentials = gnutls.Credentials()
655
gnutls.credentials_set(self, credentials.type,
656
credentials)
657
self.credentials = credentials
658
659
def __del__(self):
660
gnutls.deinit(self)
661
662
def handshake(self):
663
return gnutls.handshake(self)
664
665
def send(self, data):
666
data = bytes(data)
667
data_len = len(data)
668
while data_len > 0:
669
data_len -= gnutls.record_send(self, data[-data_len:],
670
data_len)
671
672
def bye(self):
673
return gnutls.bye(self, gnutls.SHUT_RDWR)
674
675
# Error handling functions
676
def _error_code(result):
677
"""A function to raise exceptions on errors, suitable
678
for the "restype" attribute on ctypes functions"""
679
if result >= gnutls.E_SUCCESS:
680
return result
681
if result == gnutls.E_NO_CERTIFICATE_FOUND:
682
raise gnutls.CertificateSecurityError(code=result)
683
raise gnutls.Error(code=result)
684
685
def _retry_on_error(result, func, arguments,
686
_error_code=_error_code):
687
"""A function to retry on some errors, suitable
688
for the "errcheck" attribute on ctypes functions"""
689
while result < gnutls.E_SUCCESS:
690
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
691
return _error_code(result)
692
result = func(*arguments)
693
return result
694
695
# Unless otherwise indicated, the function declarations below are
696
# all from the gnutls/gnutls.h C header file.
697
698
# Functions
699
priority_set_direct = _library.gnutls_priority_set_direct
700
priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,
701
ctypes.POINTER(ctypes.c_char_p)]
702
priority_set_direct.restype = _error_code
703
704
init = _library.gnutls_init
705
init.argtypes = [PointerTo(ClientSession), ctypes.c_int]
706
init.restype = _error_code
707
708
set_default_priority = _library.gnutls_set_default_priority
709
set_default_priority.argtypes = [ClientSession]
710
set_default_priority.restype = _error_code
711
712
record_send = _library.gnutls_record_send
713
record_send.argtypes = [ClientSession, ctypes.c_void_p,
714
ctypes.c_size_t]
715
record_send.restype = ctypes.c_ssize_t
716
record_send.errcheck = _retry_on_error
717
718
certificate_allocate_credentials = (
719
_library.gnutls_certificate_allocate_credentials)
720
certificate_allocate_credentials.argtypes = [
721
PointerTo(Credentials)]
722
certificate_allocate_credentials.restype = _error_code
723
724
certificate_free_credentials = (
725
_library.gnutls_certificate_free_credentials)
726
certificate_free_credentials.argtypes = [Credentials]
727
certificate_free_credentials.restype = None
728
729
handshake_set_private_extensions = (
730
_library.gnutls_handshake_set_private_extensions)
731
handshake_set_private_extensions.argtypes = [ClientSession,
732
ctypes.c_int]
733
handshake_set_private_extensions.restype = None
734
735
credentials_set = _library.gnutls_credentials_set
736
credentials_set.argtypes = [ClientSession, credentials_type_t,
737
CastToVoidPointer(Credentials)]
738
credentials_set.restype = _error_code
739
740
strerror = _library.gnutls_strerror
741
strerror.argtypes = [ctypes.c_int]
742
strerror.restype = ctypes.c_char_p
743
744
certificate_type_get = _library.gnutls_certificate_type_get
745
certificate_type_get.argtypes = [ClientSession]
746
certificate_type_get.restype = _error_code
747
748
certificate_get_peers = _library.gnutls_certificate_get_peers
749
certificate_get_peers.argtypes = [ClientSession,
750
ctypes.POINTER(ctypes.c_uint)]
751
certificate_get_peers.restype = ctypes.POINTER(datum_t)
752
753
global_set_log_level = _library.gnutls_global_set_log_level
754
global_set_log_level.argtypes = [ctypes.c_int]
755
global_set_log_level.restype = None
756
757
global_set_log_function = _library.gnutls_global_set_log_function
758
global_set_log_function.argtypes = [log_func]
759
global_set_log_function.restype = None
760
761
deinit = _library.gnutls_deinit
762
deinit.argtypes = [ClientSession]
763
deinit.restype = None
764
765
handshake = _library.gnutls_handshake
766
handshake.argtypes = [ClientSession]
767
handshake.restype = ctypes.c_int
768
handshake.errcheck = _retry_on_error
769
770
transport_set_ptr = _library.gnutls_transport_set_ptr
771
transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]
772
transport_set_ptr.restype = None
773
774
bye = _library.gnutls_bye
775
bye.argtypes = [ClientSession, close_request_t]
776
bye.restype = ctypes.c_int
777
bye.errcheck = _retry_on_error
778
779
check_version = _library.gnutls_check_version
780
check_version.argtypes = [ctypes.c_char_p]
781
check_version.restype = ctypes.c_char_p
782
783
_need_version = b"3.3.0"
784
if check_version(_need_version) is None:
785
raise self.Error("Needs GnuTLS {} or later"
786
.format(_need_version))
787
788
_tls_rawpk_version = b"3.6.6"
789
has_rawpk = bool(check_version(_tls_rawpk_version))
790
791
if has_rawpk:
792
# Types
793
class pubkey_st(ctypes.Structure):
794
_fields = []
795
pubkey_t = ctypes.POINTER(pubkey_st)
796
797
x509_crt_fmt_t = ctypes.c_int
798
799
# All the function declarations below are from
800
# gnutls/abstract.h
801
pubkey_init = _library.gnutls_pubkey_init
802
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
803
pubkey_init.restype = _error_code
804
805
pubkey_import = _library.gnutls_pubkey_import
806
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
807
x509_crt_fmt_t]
808
pubkey_import.restype = _error_code
809
810
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
811
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
812
ctypes.POINTER(ctypes.c_ubyte),
813
ctypes.POINTER(ctypes.c_size_t)]
814
pubkey_get_key_id.restype = _error_code
815
816
pubkey_deinit = _library.gnutls_pubkey_deinit
817
pubkey_deinit.argtypes = [pubkey_t]
818
pubkey_deinit.restype = None
819
else:
820
# All the function declarations below are from
821
# gnutls/openpgp.h
822
823
openpgp_crt_init = _library.gnutls_openpgp_crt_init
824
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
825
openpgp_crt_init.restype = _error_code
826
827
openpgp_crt_import = _library.gnutls_openpgp_crt_import
828
openpgp_crt_import.argtypes = [openpgp_crt_t,
829
ctypes.POINTER(datum_t),
830
openpgp_crt_fmt_t]
831
openpgp_crt_import.restype = _error_code
832
833
openpgp_crt_verify_self = \
834
_library.gnutls_openpgp_crt_verify_self
835
openpgp_crt_verify_self.argtypes = [
836
openpgp_crt_t,
837
ctypes.c_uint,
838
ctypes.POINTER(ctypes.c_uint),
839
]
840
openpgp_crt_verify_self.restype = _error_code
841
842
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
843
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
844
openpgp_crt_deinit.restype = None
845
846
openpgp_crt_get_fingerprint = (
847
_library.gnutls_openpgp_crt_get_fingerprint)
848
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
849
ctypes.c_void_p,
850
ctypes.POINTER(
851
ctypes.c_size_t)]
852
openpgp_crt_get_fingerprint.restype = _error_code
853
854
if check_version(b"3.6.4"):
855
certificate_type_get2 = _library.gnutls_certificate_type_get2
856
certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]
857
certificate_type_get2.restype = _error_code
858
859
# Remove non-public functions
860
del _error_code, _retry_on_error
861
862
863
def call_pipe(connection, # : multiprocessing.Connection
864
func, *args, **kwargs):
865
"""This function is meant to be called by multiprocessing.Process
866
867
This function runs func(*args, **kwargs), and writes the resulting
868
return value on the provided multiprocessing.Connection.
869
"""
870
connection.send(func(*args, **kwargs))
871
connection.close()
872
873
874
class Client:
269
def _timedelta_to_milliseconds(td):
270
"Convert a datetime.timedelta() to milliseconds"
271
return ((td.days * 24 * 60 * 60 * 1000)
272
+ (td.seconds * 1000)
273
+ (td.microseconds // 1000))
274
275
class Client(object):
875
276
"""A representation of a client host served by this server.
876
277
877
278
Attributes:
878
approved: bool(); None if not yet approved/disapproved
279
_approved: bool(); 'None' if not yet approved/disapproved
879
280
approval_delay: datetime.timedelta(); Time to wait for approval
880
281
approval_duration: datetime.timedelta(); Duration of one approval
881
checker: multiprocessing.Process(); a running checker process used
882
to see if the client lives. None if no process is
883
running.
884
checker_callback_tag: a GLib event source tag, or None
282
checker: subprocess.Popen(); a running checker process used
283
to see if the client lives.
284
'None' if no process is running.
285
checker_callback_tag: a gobject event source tag, or None
885
286
checker_command: string; External command which is run to check
886
287
if client lives. %() expansions are done at
887
288
runtime with vars(self) as dict, so that for
888
289
instance %(name)s can be used in the command.
889
checker_initiator_tag: a GLib event source tag, or None
290
checker_initiator_tag: a gobject event source tag, or None
890
291
created: datetime.datetime(); (UTC) object creation
891
client_structure: Object describing what attributes a client has
892
and is used for storing the client at exit
893
292
current_checker_command: string; current running checker_command
894
disable_initiator_tag: a GLib event source tag, or None
293
disable_hook: If set, called by disable() as disable_hook(self)
294
disable_initiator_tag: a gobject event source tag, or None
895
295
enabled: bool()
896
296
fingerprint: string (40 or 32 hexadecimal digits); used to
897
uniquely identify an OpenPGP client
898
key_id: string (64 hexadecimal digits); used to uniquely identify
899
a client using raw public keys
297
uniquely identify the client
900
298
host: string; available for use by the checker command
901
299
interval: datetime.timedelta(); How often to start a new checker
902
300
last_approval_request: datetime.datetime(); (UTC) or None
903
301
last_checked_ok: datetime.datetime(); (UTC) or None
904
last_checker_status: integer between 0 and 255 reflecting exit
905
status of last checker. -1 reflects crashed
906
checker, -2 means no checker completed yet.
907
last_checker_signal: The signal which killed the last checker, if
908
last_checker_status is -1
909
last_enabled: datetime.datetime(); (UTC) or None
302
last_enabled: datetime.datetime(); (UTC)
910
303
name: string; from the config file, used in log messages and
911
304
D-Bus identifiers
912
305
secret: bytestring; sent verbatim (over TLS) to client
913
306
timeout: datetime.timedelta(); How long from last_checked_ok
914
307
until this client is disabled
915
extended_timeout: extra long timeout when secret has been sent
308
extended_timeout: extra long timeout when password has been sent
916
309
runtime_expansions: Allowed attributes for runtime expansion.
917
310
expires: datetime.datetime(); time (UTC) when a client will be
918
311
disabled, or None
919
server_settings: The server_settings dict from main()
920
312
"""
921
313
922
314
runtime_expansions = ("approval_delay", "approval_duration",
923
"created", "enabled", "expires", "key_id",
924
"fingerprint", "host", "interval",
925
"last_approval_request", "last_checked_ok",
315
"created", "enabled", "fingerprint",
316
"host", "interval", "last_checked_ok",
926
317
"last_enabled", "name", "timeout")
927
client_defaults = {
928
"timeout": "PT5M",
929
"extended_timeout": "PT15M",
930
"interval": "PT2M",
931
"checker": "fping -q -- %%(host)s",
932
"host": "",
933
"approval_delay": "PT0S",
934
"approval_duration": "PT1S",
935
"approved_by_default": "True",
936
"enabled": "True",
937
}
938
939
@staticmethod
940
def config_parser(config):
941
"""Construct a new dict of client settings of this form:
942
{ client_name: {setting_name: value, ...}, ...}
943
with exceptions for any special settings as defined above.
944
NOTE: Must be a pure function. Must return the same result
945
value given the same arguments.
946
"""
947
settings = {}
948
for client_name in config.sections():
949
section = dict(config.items(client_name))
950
client = settings[client_name] = {}
951
952
client["host"] = section["host"]
953
# Reformat values from string types to Python types
954
client["approved_by_default"] = config.getboolean(
955
client_name, "approved_by_default")
956
client["enabled"] = config.getboolean(client_name,
957
"enabled")
958
959
# Uppercase and remove spaces from key_id and fingerprint
960
# for later comparison purposes with return value from the
961
# key_id() and fingerprint() functions
962
client["key_id"] = (section.get("key_id", "").upper()
963
.replace(" ", ""))
964
client["fingerprint"] = (section.get("fingerprint",
965
"").upper()
966
.replace(" ", ""))
967
if not (client["key_id"] or client["fingerprint"]):
968
log.error("Skipping client %s without key_id or"
969
" fingerprint", client_name)
970
del settings[client_name]
971
continue
972
if "secret" in section:
973
client["secret"] = codecs.decode(section["secret"]
974
.encode("utf-8"),
975
"base64")
976
elif "secfile" in section:
977
with open(os.path.expanduser(os.path.expandvars
978
(section["secfile"])),
979
"rb") as secfile:
980
client["secret"] = secfile.read()
981
else:
982
raise TypeError("No secret or secfile for section {}"
983
.format(section))
984
client["timeout"] = string_to_delta(section["timeout"])
985
client["extended_timeout"] = string_to_delta(
986
section["extended_timeout"])
987
client["interval"] = string_to_delta(section["interval"])
988
client["approval_delay"] = string_to_delta(
989
section["approval_delay"])
990
client["approval_duration"] = string_to_delta(
991
section["approval_duration"])
992
client["checker_command"] = section["checker"]
993
client["last_approval_request"] = None
994
client["last_checked_ok"] = None
995
client["last_checker_status"] = -2
996
997
return settings
998
999
def __init__(self, settings, name=None, server_settings=None):
318
319
def timeout_milliseconds(self):
320
"Return the 'timeout' attribute in milliseconds"
321
return _timedelta_to_milliseconds(self.timeout)
322
323
def extended_timeout_milliseconds(self):
324
"Return the 'extended_timeout' attribute in milliseconds"
325
return _timedelta_to_milliseconds(self.extended_timeout)
326
327
def interval_milliseconds(self):
328
"Return the 'interval' attribute in milliseconds"
329
return _timedelta_to_milliseconds(self.interval)
330
331
def approval_delay_milliseconds(self):
332
return _timedelta_to_milliseconds(self.approval_delay)
333
334
def __init__(self, name = None, disable_hook=None, config=None):
335
"""Note: the 'checker' key in 'config' sets the
336
'checker_command' attribute and *not* the 'checker'
337
attribute."""
1000
338
self.name = name
1001
if server_settings is None:
1002
server_settings = {}
1003
self.server_settings = server_settings
1004
# adding all client settings
1005
for setting, value in settings.items():
1006
setattr(self, setting, value)
1007
1008
if self.enabled:
1009
if not hasattr(self, "last_enabled"):
1010
self.last_enabled = datetime.datetime.utcnow()
1011
if not hasattr(self, "expires"):
1012
self.expires = (datetime.datetime.utcnow()
1013
+ self.timeout)
339
if config is None:
340
config = {}
341
logger.debug("Creating client %r", self.name)
342
# Uppercase and remove spaces from fingerprint for later
343
# comparison purposes with return value from the fingerprint()
344
# function
345
self.fingerprint = (config["fingerprint"].upper()
346
.replace(" ", ""))
347
logger.debug(" Fingerprint: %s", self.fingerprint)
348
if "secret" in config:
349
self.secret = config["secret"].decode("base64")
350
elif "secfile" in config:
351
with open(os.path.expanduser(os.path.expandvars
352
(config["secfile"])),
353
"rb") as secfile:
354
self.secret = secfile.read()
1014
355
else:
1015
self.last_enabled = None
1016
self.expires = None
1017
1018
log.debug("Creating client %r", self.name)
1019
log.debug(" Key ID: %s", self.key_id)
1020
log.debug(" Fingerprint: %s", self.fingerprint)
1021
self.created = settings.get("created",
1022
datetime.datetime.utcnow())
1023
1024
# attributes specific for this server instance
356
raise TypeError("No secret or secfile for client %s"
357
% self.name)
358
self.host = config.get("host", "")
359
self.created = datetime.datetime.utcnow()
360
self.enabled = False
361
self.last_approval_request = None
362
self.last_enabled = None
363
self.last_checked_ok = None
364
self.timeout = string_to_delta(config["timeout"])
365
self.extended_timeout = string_to_delta(config
366
["extended_timeout"])
367
self.interval = string_to_delta(config["interval"])
368
self.disable_hook = disable_hook
1025
369
self.checker = None
1026
370
self.checker_initiator_tag = None
1027
371
self.disable_initiator_tag = None
372
self.expires = None
1028
373
self.checker_callback_tag = None
374
self.checker_command = config["checker"]
1029
375
self.current_checker_command = None
1030
self.approved = None
376
self.last_connect = None
377
self._approved = None
378
self.approved_by_default = config.get("approved_by_default",
379
True)
1031
380
self.approvals_pending = 0
1032
self.changedstate = multiprocessing_manager.Condition(
1033
multiprocessing_manager.Lock())
1034
self.client_structure = [attr
1035
for attr in self.__dict__.keys()
1036
if not attr.startswith("_")]
1037
self.client_structure.append("client_structure")
1038
1039
for name, t in inspect.getmembers(
1040
type(self), lambda obj: isinstance(obj, property)):
1041
if not name.startswith("_"):
1042
self.client_structure.append(name)
1043
1044
# Send notice to process children that client state has changed
381
self.approval_delay = string_to_delta(
382
config["approval_delay"])
383
self.approval_duration = string_to_delta(
384
config["approval_duration"])
385
self.changedstate = (multiprocessing_manager
386
.Condition(multiprocessing_manager
387
.Lock()))
388
1045
389
def send_changedstate(self):
1046
with self.changedstate:
1047
self.changedstate.notify_all()
1048
390
self.changedstate.acquire()
391
self.changedstate.notify_all()
392
self.changedstate.release()
393
1049
394
def enable(self):
1050
395
"""Start this client's checker and timeout hooks"""
1051
396
if getattr(self, "enabled", False):
1052
397
# Already enabled
1053
398
return
399
self.send_changedstate()
400
# Schedule a new checker to be started an 'interval' from now,
401
# and every interval from then on.
402
self.checker_initiator_tag = (gobject.timeout_add
403
(self.interval_milliseconds(),
404
self.start_checker))
405
# Schedule a disable() when 'timeout' has passed
406
self.expires = datetime.datetime.utcnow() + self.timeout
407
self.disable_initiator_tag = (gobject.timeout_add
408
(self.timeout_milliseconds(),
409
self.disable))
1054
410
self.enabled = True
1055
411
self.last_enabled = datetime.datetime.utcnow()
1056
self.init_checker()
1057
self.send_changedstate()
1058
412
# Also start a new checker *right now*.
413
self.start_checker()
414
1059
415
def disable(self, quiet=True):
1060
416
"""Disable this client."""
1061
417
if not getattr(self, "enabled", False):
1062
418
return False
1063
419
if not quiet:
1064
log.info("Disabling client %s", self.name)
1065
if getattr(self, "disable_initiator_tag", None) is not None:
1066
GLib.source_remove(self.disable_initiator_tag)
420
self.send_changedstate()
421
if not quiet:
422
logger.info("Disabling client %s", self.name)
423
if getattr(self, "disable_initiator_tag", False):
424
gobject.source_remove(self.disable_initiator_tag)
1067
425
self.disable_initiator_tag = None
1068
426
self.expires = None
1069
if getattr(self, "checker_initiator_tag", None) is not None:
1070
GLib.source_remove(self.checker_initiator_tag)
427
if getattr(self, "checker_initiator_tag", False):
428
gobject.source_remove(self.checker_initiator_tag)
1071
429
self.checker_initiator_tag = None
1072
430
self.stop_checker()
431
if self.disable_hook:
432
self.disable_hook(self)
1073
433
self.enabled = False
1074
if not quiet:
1075
self.send_changedstate()
1076
# Do not run this again if called by a GLib.timeout_add
434
# Do not run this again if called by a gobject.timeout_add
1077
435
return False
1078
436
1079
437
def __del__(self):
438
self.disable_hook = None
1080
439
self.disable()
1081
1082
def init_checker(self, randomize_start=False):
1083
# Schedule a new checker to be started a randomly selected
1084
# time (a fraction of 'interval') from now. This spreads out
1085
# the startup of checkers over time when the server is
1086
# started.
1087
if self.checker_initiator_tag is not None:
1088
GLib.source_remove(self.checker_initiator_tag)
1089
interval_milliseconds = int(self.interval.total_seconds()
1090
* 1000)
1091
if randomize_start:
1092
delay_milliseconds = random.randrange(
1093
interval_milliseconds + 1)
1094
else:
1095
delay_milliseconds = interval_milliseconds
1096
self.checker_initiator_tag = GLib.timeout_add(
1097
delay_milliseconds, self.start_checker, randomize_start)
1098
delay = datetime.timedelta(0, 0, 0, delay_milliseconds)
1099
# A checker might take up to an 'interval' of time, so we can
1100
# expire at the soonest one interval after a checker was
1101
# started. Since the initial checker is delayed, the expire
1102
# time might have to be extended.
1103
now = datetime.datetime.utcnow()
1104
self.expires = now + delay + self.interval
1105
# Schedule a disable() at expire time
1106
if self.disable_initiator_tag is not None:
1107
GLib.source_remove(self.disable_initiator_tag)
1108
self.disable_initiator_tag = GLib.timeout_add(
1109
int((self.expires - now).total_seconds() * 1000),
1110
self.disable)
1111
1112
def checker_callback(self, source, condition, connection,
1113
command):
440
441
def checker_callback(self, pid, condition, command):
1114
442
"""The checker has completed, so take appropriate actions."""
1115
# Read return code from connection (see call_pipe)
1116
returncode = connection.recv()
1117
connection.close()
1118
if self.checker is not None:
1119
self.checker.join()
1120
443
self.checker_callback_tag = None
1121
444
self.checker = None
1122
1123
if returncode >= 0:
1124
self.last_checker_status = returncode
1125
self.last_checker_signal = None
1126
if self.last_checker_status == 0:
1127
log.info("Checker for %(name)s succeeded", vars(self))
445
if os.WIFEXITED(condition):
446
exitstatus = os.WEXITSTATUS(condition)
447
if exitstatus == 0:
448
logger.info("Checker for %(name)s succeeded",
449
vars(self))
1128
450
self.checked_ok()
1129
451
else:
1130
log.info("Checker for %(name)s failed", vars(self))
452
logger.info("Checker for %(name)s failed",
453
vars(self))
1131
454
else:
1132
self.last_checker_status = -1
1133
self.last_checker_signal = -returncode
1134
log.warning("Checker for %(name)s crashed?", vars(self))
1135
return False
1136
1137
def checked_ok(self):
1138
"""Assert that the client has been seen, alive and well."""
1139
self.last_checked_ok = datetime.datetime.utcnow()
1140
self.last_checker_status = 0
1141
self.last_checker_signal = None
1142
self.bump_timeout()
1143
1144
def bump_timeout(self, timeout=None):
1145
"""Bump up the timeout for this client."""
455
logger.warning("Checker for %(name)s crashed?",
456
vars(self))
457
458
def checked_ok(self, timeout=None):
459
"""Bump up the timeout for this client.
460
461
This should only be called when the client has been seen,
462
alive and well.
463
"""
1146
464
if timeout is None:
1147
465
timeout = self.timeout
466
self.last_checked_ok = datetime.datetime.utcnow()
1148
467
if self.disable_initiator_tag is not None:
1149
GLib.source_remove(self.disable_initiator_tag)
1150
self.disable_initiator_tag = None
468
gobject.source_remove(self.disable_initiator_tag)
1151
469
if getattr(self, "enabled", False):
1152
self.disable_initiator_tag = GLib.timeout_add(
1153
int(timeout.total_seconds() * 1000), self.disable)
470
self.disable_initiator_tag = (gobject.timeout_add
471
(_timedelta_to_milliseconds
472
(timeout), self.disable))
1154
473
self.expires = datetime.datetime.utcnow() + timeout
1155
474
1156
475
def need_approval(self):
1157
476
self.last_approval_request = datetime.datetime.utcnow()
1158
1159
def start_checker(self, start_was_randomized=False):
477
478
def start_checker(self):
1160
479
"""Start a new checker subprocess if one is not running.
1161
480
1162
481
If a checker already exists, leave it running and do
1163
482
nothing."""
1164
483
# The reason for not killing a running checker is that if we
1165
# did that, and if a checker (for some reason) started running
1166
# slowly and taking more than 'interval' time, then the client
1167
# would inevitably timeout, since no checker would get a
1168
# chance to run to completion. If we instead leave running
484
# did that, then if a checker (for some reason) started
485
# running slowly and taking more than 'interval' time, the
486
# client would inevitably timeout, since no checker would get
487
# a chance to run to completion. If we instead leave running
1169
488
# checkers alone, the checker would have to take more time
1170
489
# than 'timeout' for the client to be disabled, which is as it
1171
490
# should be.
1172
1173
if self.checker is not None and not self.checker.is_alive():
1174
log.warning("Checker was not alive; joining")
1175
self.checker.join()
1176
self.checker = None
491
492
# If a checker exists, make sure it is not a zombie
493
try:
494
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
495
except (AttributeError, OSError) as error:
496
if (isinstance(error, OSError)
497
and error.errno != errno.ECHILD):
498
raise error
499
else:
500
if pid:
501
logger.warning("Checker was a zombie")
502
gobject.source_remove(self.checker_callback_tag)
503
self.checker_callback(pid, status,
504
self.current_checker_command)
1177
505
# Start a new checker if needed
1178
506
if self.checker is None:
1179
# Escape attributes for the shell
1180
escaped_attrs = {
1181
attr: shlex.quote(str(getattr(self, attr)))
1182
for attr in self.runtime_expansions}
1183
507
try:
1184
command = self.checker_command % escaped_attrs
1185
except TypeError as error:
1186
log.error('Could not format string "%s"',
1187
self.checker_command, exc_info=error)
1188
return True # Try again later
508
# In case checker_command has exactly one % operator
509
command = self.checker_command % self.host
510
except TypeError:
511
# Escape attributes for the shell
512
escaped_attrs = dict(
513
(attr,
514
re.escape(unicode(str(getattr(self, attr, "")),
515
errors=
516
'replace')))
517
for attr in
518
self.runtime_expansions)
519
520
try:
521
command = self.checker_command % escaped_attrs
522
except TypeError as error:
523
logger.error('Could not format string "%s":'
524
' %s', self.checker_command, error)
525
return True # Try again later
1189
526
self.current_checker_command = command
1190
log.info("Starting checker %r for %s", command, self.name)
1191
# We don't need to redirect stdout and stderr, since
1192
# in normal mode, that is already done by daemon(),
1193
# and in debug mode we don't want to. (Stdin is
1194
# always replaced by /dev/null.)
1195
# The exception is when not debugging but nevertheless
1196
# running in the foreground; use the previously
1197
# created wnull.
1198
popen_args = {"close_fds": True,
1199
"shell": True,
1200
"cwd": "/"}
1201
if (not self.server_settings["debug"]
1202
and self.server_settings["foreground"]):
1203
popen_args.update({"stdout": wnull,
1204
"stderr": wnull})
1205
pipe = multiprocessing.Pipe(duplex=False)
1206
self.checker = multiprocessing.Process(
1207
target=call_pipe,
1208
args=(pipe[1], subprocess.call, command),
1209
kwargs=popen_args)
1210
self.checker.start()
1211
self.checker_callback_tag = GLib.io_add_watch(
1212
GLib.IOChannel.unix_new(pipe[0].fileno()),
1213
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1214
self.checker_callback, pipe[0], command)
1215
if start_was_randomized:
1216
# We were started after a random delay; Schedule a new
1217
# checker to be started an 'interval' from now, and every
1218
# interval from then on.
1219
now = datetime.datetime.utcnow()
1220
self.checker_initiator_tag = GLib.timeout_add(
1221
int(self.interval.total_seconds() * 1000),
1222
self.start_checker)
1223
self.expires = max(self.expires, now + self.interval)
1224
# Don't start a new checker again after same random delay
1225
return False
1226
# Re-run this periodically if run by GLib.timeout_add
527
try:
528
logger.info("Starting checker %r for %s",
529
command, self.name)
530
# We don't need to redirect stdout and stderr, since
531
# in normal mode, that is already done by daemon(),
532
# and in debug mode we don't want to. (Stdin is
533
# always replaced by /dev/null.)
534
self.checker = subprocess.Popen(command,
535
close_fds=True,
536
shell=True, cwd="/")
537
self.checker_callback_tag = (gobject.child_watch_add
538
(self.checker.pid,
539
self.checker_callback,
540
data=command))
541
# The checker may have completed before the gobject
542
# watch was added. Check for this.
543
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
544
if pid:
545
gobject.source_remove(self.checker_callback_tag)
546
self.checker_callback(pid, status, command)
547
except OSError as error:
548
logger.error("Failed to start subprocess: %s",
549
error)
550
# Re-run this periodically if run by gobject.timeout_add
1227
551
return True
1228
552
1229
553
def stop_checker(self):
1230
554
"""Force the checker process, if any, to stop."""
1231
555
if self.checker_callback_tag:
1232
GLib.source_remove(self.checker_callback_tag)
556
gobject.source_remove(self.checker_callback_tag)
1233
557
self.checker_callback_tag = None
1234
558
if getattr(self, "checker", None) is None:
1235
559
return
1236
log.debug("Stopping checker for %(name)s", vars(self))
1237
self.checker.terminate()
560
logger.debug("Stopping checker for %(name)s", vars(self))
561
try:
562
os.kill(self.checker.pid, signal.SIGTERM)
563
#time.sleep(0.5)
564
#if self.checker.poll() is None:
565
# os.kill(self.checker.pid, signal.SIGKILL)
566
except OSError as error:
567
if error.errno != errno.ESRCH: # No such process
568
raise
1238
569
self.checker = None
1239
570
1240
571
1241
def dbus_service_property(dbus_interface,
1242
signature="v",
1243
access="readwrite",
1244
byte_arrays=False):
572
def dbus_service_property(dbus_interface, signature="v",
573
access="readwrite", byte_arrays=False):
1245
574
"""Decorators for marking methods of a DBusObjectWithProperties to
1246
575
become properties on the D-Bus.
1247
576
1248
577
The decorated method will be called with no arguments by "Get"
1249
578
and with one argument by "Set".
1250
579
1251
580
The parameters, where they are supported, are the same as
1252
581
dbus.service.method, except there is only "signature", since the
1253
582
type from Get() and the type sent to Set() is the same.
1256
585
# "Set" method, so we fail early here:
1257
586
if byte_arrays and signature != "ay":
1258
587
raise ValueError("Byte arrays not supported for non-'ay'"
1259
" signature {!r}".format(signature))
1260
588
" signature %r" % signature)
1261
589
def decorator(func):
1262
590
func._dbus_is_property = True
1263
591
func._dbus_interface = dbus_interface
1266
594
func._dbus_name = func.__name__
1267
595
if func._dbus_name.endswith("_dbus_property"):
1268
596
func._dbus_name = func._dbus_name[:-14]
1269
func._dbus_get_args_options = {"byte_arrays": byte_arrays}
1270
return func
1271
1272
return decorator
1273
1274
1275
def dbus_interface_annotations(dbus_interface):
1276
"""Decorator for marking functions returning interface annotations
1277
1278
Usage:
1279
1280
@dbus_interface_annotations("org.example.Interface")
1281
def _foo(self): # Function name does not matter
1282
return {"org.freedesktop.DBus.Deprecated": "true",
1283
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1284
"false"}
1285
"""
1286
1287
def decorator(func):
1288
func._dbus_is_interface = True
1289
func._dbus_interface = dbus_interface
1290
func._dbus_name = dbus_interface
1291
return func
1292
1293
return decorator
1294
1295
1296
def dbus_annotations(annotations):
1297
"""Decorator to annotate D-Bus methods, signals or properties
1298
Usage:
1299
1300
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1301
"org.freedesktop.DBus.Property."
1302
"EmitsChangedSignal": "false"})
1303
@dbus_service_property("org.example.Interface", signature="b",
1304
access="r")
1305
def Property_dbus_property(self):
1306
return dbus.Boolean(False)
1307
1308
See also the DBusObjectWithAnnotations class.
1309
"""
1310
1311
def decorator(func):
1312
func._dbus_annotations = annotations
1313
return func
1314
597
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
598
return func
1315
599
return decorator
1316
600
1317
601
1318
602
class DBusPropertyException(dbus.exceptions.DBusException):
1319
603
"""A base class for D-Bus property-related exceptions
1320
604
"""
1321
pass
605
def __unicode__(self):
606
return unicode(str(self))
1322
607
1323
608
1324
609
class DBusPropertyAccessException(DBusPropertyException):
1333
618
pass
1334
619
1335
620
1336
class DBusObjectWithAnnotations(dbus.service.Object):
1337
"""A D-Bus object with annotations.
1338
1339
Classes inheriting from this can use the dbus_annotations
1340
decorator to add annotations to methods or signals.
1341
"""
1342
1343
@staticmethod
1344
def _is_dbus_thing(thing):
1345
"""Returns a function testing if an attribute is a D-Bus thing
1346
1347
If called like _is_dbus_thing("method") it returns a function
1348
suitable for use as predicate to inspect.getmembers().
1349
"""
1350
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1351
False)
1352
1353
def _get_all_dbus_things(self, thing):
1354
"""Returns a generator of (name, attribute) pairs
1355
"""
1356
return ((getattr(athing.__get__(self), "_dbus_name", name),
1357
athing.__get__(self))
1358
for cls in self.__class__.__mro__
1359
for name, athing in
1360
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1361
1362
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1363
out_signature="s",
1364
path_keyword="object_path",
1365
connection_keyword="connection")
1366
def Introspect(self, object_path, connection):
1367
"""Overloading of standard D-Bus method.
1368
1369
Inserts annotation tags on methods and signals.
1370
"""
1371
xmlstring = dbus.service.Object.Introspect(self, object_path,
1372
connection)
1373
try:
1374
document = xml.dom.minidom.parseString(xmlstring)
1375
1376
for if_tag in document.getElementsByTagName("interface"):
1377
# Add annotation tags
1378
for typ in ("method", "signal"):
1379
for tag in if_tag.getElementsByTagName(typ):
1380
annots = dict()
1381
for name, prop in (self.
1382
_get_all_dbus_things(typ)):
1383
if (name == tag.getAttribute("name")
1384
and prop._dbus_interface
1385
== if_tag.getAttribute("name")):
1386
annots.update(getattr(
1387
prop, "_dbus_annotations", {}))
1388
for name, value in annots.items():
1389
ann_tag = document.createElement(
1390
"annotation")
1391
ann_tag.setAttribute("name", name)
1392
ann_tag.setAttribute("value", value)
1393
tag.appendChild(ann_tag)
1394
# Add interface annotation tags
1395
for annotation, value in dict(
1396
itertools.chain.from_iterable(
1397
annotations().items()
1398
for name, annotations
1399
in self._get_all_dbus_things("interface")
1400
if name == if_tag.getAttribute("name")
1401
)).items():
1402
ann_tag = document.createElement("annotation")
1403
ann_tag.setAttribute("name", annotation)
1404
ann_tag.setAttribute("value", value)
1405
if_tag.appendChild(ann_tag)
1406
# Fix argument name for the Introspect method itself
1407
if (if_tag.getAttribute("name")
1408
== dbus.INTROSPECTABLE_IFACE):
1409
for cn in if_tag.getElementsByTagName("method"):
1410
if cn.getAttribute("name") == "Introspect":
1411
for arg in cn.getElementsByTagName("arg"):
1412
if (arg.getAttribute("direction")
1413
== "out"):
1414
arg.setAttribute("name",
1415
"xml_data")
1416
xmlstring = document.toxml("utf-8")
1417
document.unlink()
1418
except (AttributeError, xml.dom.DOMException,
1419
xml.parsers.expat.ExpatError) as error:
1420
log.error("Failed to override Introspection method",
1421
exc_info=error)
1422
return xmlstring
1423
1424
1425
class DBusObjectWithProperties(DBusObjectWithAnnotations):
621
class DBusObjectWithProperties(dbus.service.Object):
1426
622
"""A D-Bus object with properties.
1427
623
1428
624
Classes inheriting from this can use the dbus_service_property
1429
625
decorator to expose methods as D-Bus properties. It exposes the
1430
626
standard Get(), Set(), and GetAll() methods on the D-Bus.
1431
627
"""
1432
628
629
@staticmethod
630
def _is_dbus_property(obj):
631
return getattr(obj, "_dbus_is_property", False)
632
633
def _get_all_dbus_properties(self):
634
"""Returns a generator of (name, attribute) pairs
635
"""
636
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
637
for cls in self.__class__.__mro__
638
for name, prop in
639
inspect.getmembers(cls, self._is_dbus_property))
640
1433
641
def _get_dbus_property(self, interface_name, property_name):
1434
642
"""Returns a bound method if one exists which is a D-Bus
1435
643
property with the specified name and interface.
1436
644
"""
1437
for cls in self.__class__.__mro__:
1438
for name, value in inspect.getmembers(
1439
cls, self._is_dbus_thing("property")):
645
for cls in self.__class__.__mro__:
646
for name, value in (inspect.getmembers
647
(cls, self._is_dbus_property)):
1440
648
if (value._dbus_name == property_name
1441
649
and value._dbus_interface == interface_name):
1442
650
return value.__get__(self)
1443
651
1444
652
# No such property
1445
raise DBusPropertyNotFound("{}:{}.{}".format(
1446
self.dbus_object_path, interface_name, property_name))
1447
1448
@classmethod
1449
def _get_all_interface_names(cls):
1450
"""Get a sequence of all interfaces supported by an object"""
1451
return (name for name in set(getattr(getattr(x, attr),
1452
"_dbus_interface", None)
1453
for x in (inspect.getmro(cls))
1454
for attr in dir(x))
1455
if name is not None)
1456
1457
@dbus.service.method(dbus.PROPERTIES_IFACE,
1458
in_signature="ss",
653
raise DBusPropertyNotFound(self.dbus_object_path + ":"
654
+ interface_name + "."
655
+ property_name)
656
657
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1459
658
out_signature="v")
1460
659
def Get(self, interface_name, property_name):
1461
660
"""Standard D-Bus property Get() method, see D-Bus standard.
1467
666
if not hasattr(value, "variant_level"):
1468
667
return value
1469
668
return type(value)(value, variant_level=value.variant_level+1)
1470
669
1471
670
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1472
671
def Set(self, interface_name, property_name, value):
1473
672
"""Standard D-Bus property Set() method, see D-Bus standard.
1479
678
# The byte_arrays option is not supported yet on
1480
679
# signatures other than "ay".
1481
680
if prop._dbus_signature != "ay":
1482
raise ValueError("Byte arrays not supported for non-"
1483
"'ay' signature {!r}"
1484
.format(prop._dbus_signature))
1485
value = dbus.ByteArray(bytes(value))
681
raise ValueError
682
value = dbus.ByteArray(''.join(unichr(byte)
683
for byte in value))
1486
684
prop(value)
1487
1488
@dbus.service.method(dbus.PROPERTIES_IFACE,
1489
in_signature="s",
685
686
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1490
687
out_signature="a{sv}")
1491
688
def GetAll(self, interface_name):
1492
689
"""Standard D-Bus property GetAll() method, see D-Bus
1493
690
standard.
1494
691
1495
692
Note: Will not include properties with access="write".
1496
693
"""
1497
properties = {}
1498
for name, prop in self._get_all_dbus_things("property"):
694
all = {}
695
for name, prop in self._get_all_dbus_properties():
1499
696
if (interface_name
1500
697
and interface_name != prop._dbus_interface):
1501
698
# Interface non-empty but did not match
1505
702
continue
1506
703
value = prop()
1507
704
if not hasattr(value, "variant_level"):
1508
properties[name] = value
705
all[name] = value
1509
706
continue
1510
properties[name] = type(value)(
1511
value, variant_level=value.variant_level + 1)
1512
return dbus.Dictionary(properties, signature="sv")
1513
1514
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1515
def PropertiesChanged(self, interface_name, changed_properties,
1516
invalidated_properties):
1517
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1518
standard.
1519
"""
1520
pass
1521
707
all[name] = type(value)(value, variant_level=
708
value.variant_level+1)
709
return dbus.Dictionary(all, signature="sv")
710
1522
711
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1523
712
out_signature="s",
1524
path_keyword="object_path",
1525
connection_keyword="connection")
713
path_keyword='object_path',
714
connection_keyword='connection')
1526
715
def Introspect(self, object_path, connection):
1527
"""Overloading of standard D-Bus method.
1528
1529
Inserts property tags and interface annotation tags.
716
"""Standard D-Bus method, overloaded to insert property tags.
1530
717
"""
1531
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1532
object_path,
1533
connection)
718
xmlstring = dbus.service.Object.Introspect(self, object_path,
719
connection)
1534
720
try:
1535
721
document = xml.dom.minidom.parseString(xmlstring)
1536
1537
722
def make_tag(document, name, prop):
1538
723
e = document.createElement("property")
1539
724
e.setAttribute("name", name)
1540
725
e.setAttribute("type", prop._dbus_signature)
1541
726
e.setAttribute("access", prop._dbus_access)
1542
727
return e
1543
1544
728
for if_tag in document.getElementsByTagName("interface"):
1545
# Add property tags
1546
729
for tag in (make_tag(document, name, prop)
1547
730
for name, prop
1548
in self._get_all_dbus_things("property")
731
in self._get_all_dbus_properties()
1549
732
if prop._dbus_interface
1550
733
== if_tag.getAttribute("name")):
1551
734
if_tag.appendChild(tag)
1552
# Add annotation tags for properties
1553
for tag in if_tag.getElementsByTagName("property"):
1554
annots = dict()
1555
for name, prop in self._get_all_dbus_things(
1556
"property"):
1557
if (name == tag.getAttribute("name")
1558
and prop._dbus_interface
1559
== if_tag.getAttribute("name")):
1560
annots.update(getattr(
1561
prop, "_dbus_annotations", {}))
1562
for name, value in annots.items():
1563
ann_tag = document.createElement(
1564
"annotation")
1565
ann_tag.setAttribute("name", name)
1566
ann_tag.setAttribute("value", value)
1567
tag.appendChild(ann_tag)
1568
735
# Add the names to the return values for the
1569
736
# "org.freedesktop.DBus.Properties" methods
1570
737
if (if_tag.getAttribute("name")
1584
751
document.unlink()
1585
752
except (AttributeError, xml.dom.DOMException,
1586
753
xml.parsers.expat.ExpatError) as error:
1587
log.error("Failed to override Introspection method",
1588
exc_info=error)
1589
return xmlstring
1590
1591
1592
try:
1593
dbus.OBJECT_MANAGER_IFACE
1594
except AttributeError:
1595
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1596
1597
1598
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1599
"""A D-Bus object with an ObjectManager.
1600
1601
Classes inheriting from this exposes the standard
1602
GetManagedObjects call and the InterfacesAdded and
1603
InterfacesRemoved signals on the standard
1604
"org.freedesktop.DBus.ObjectManager" interface.
1605
1606
Note: No signals are sent automatically; they must be sent
1607
manually.
1608
"""
1609
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1610
out_signature="a{oa{sa{sv}}}")
1611
def GetManagedObjects(self):
1612
"""This function must be overridden"""
1613
raise NotImplementedError()
1614
1615
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1616
signature="oa{sa{sv}}")
1617
def InterfacesAdded(self, object_path, interfaces_and_properties):
1618
pass
1619
1620
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1621
def InterfacesRemoved(self, object_path, interfaces):
1622
pass
1623
1624
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1625
out_signature="s",
1626
path_keyword="object_path",
1627
connection_keyword="connection")
1628
def Introspect(self, object_path, connection):
1629
"""Overloading of standard D-Bus method.
1630
1631
Override return argument name of GetManagedObjects to be
1632
"objpath_interfaces_and_properties"
1633
"""
1634
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1635
object_path,
1636
connection)
1637
try:
1638
document = xml.dom.minidom.parseString(xmlstring)
1639
1640
for if_tag in document.getElementsByTagName("interface"):
1641
# Fix argument name for the GetManagedObjects method
1642
if (if_tag.getAttribute("name")
1643
== dbus.OBJECT_MANAGER_IFACE):
1644
for cn in if_tag.getElementsByTagName("method"):
1645
if (cn.getAttribute("name")
1646
== "GetManagedObjects"):
1647
for arg in cn.getElementsByTagName("arg"):
1648
if (arg.getAttribute("direction")
1649
== "out"):
1650
arg.setAttribute(
1651
"name",
1652
"objpath_interfaces"
1653
"_and_properties")
1654
xmlstring = document.toxml("utf-8")
1655
document.unlink()
1656
except (AttributeError, xml.dom.DOMException,
1657
xml.parsers.expat.ExpatError) as error:
1658
log.error("Failed to override Introspection method",
1659
exc_info=error)
1660
return xmlstring
1661
1662
1663
def datetime_to_dbus(dt, variant_level=0):
754
logger.error("Failed to override Introspection method",
755
error)
756
return xmlstring
757
758
759
def datetime_to_dbus (dt, variant_level=0):
1664
760
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1665
761
if dt is None:
1666
return dbus.String("", variant_level=variant_level)
1667
return dbus.String(dt.isoformat(), variant_level=variant_level)
1668
1669
1670
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1671
"""A class decorator; applied to a subclass of
1672
dbus.service.Object, it will add alternate D-Bus attributes with
1673
interface names according to the "alt_interface_names" mapping.
1674
Usage:
1675
1676
@alternate_dbus_interfaces({"org.example.Interface":
1677
"net.example.AlternateInterface"})
1678
class SampleDBusObject(dbus.service.Object):
1679
@dbus.service.method("org.example.Interface")
1680
def SampleDBusMethod():
1681
pass
1682
1683
The above "SampleDBusMethod" on "SampleDBusObject" will be
1684
reachable via two interfaces: "org.example.Interface" and
1685
"net.example.AlternateInterface", the latter of which will have
1686
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1687
"true", unless "deprecate" is passed with a False value.
1688
1689
This works for methods and signals, and also for D-Bus properties
1690
(from DBusObjectWithProperties) and interfaces (from the
1691
dbus_interface_annotations decorator).
762
return dbus.String("", variant_level = variant_level)
763
return dbus.String(dt.isoformat(),
764
variant_level=variant_level)
765
766
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
767
.__metaclass__):
768
"""Applied to an empty subclass of a D-Bus object, this metaclass
769
will add additional D-Bus attributes matching a certain pattern.
1692
770
"""
1693
1694
def wrapper(cls):
1695
for orig_interface_name, alt_interface_name in (
1696
alt_interface_names.items()):
1697
attr = {}
1698
interface_names = set()
1699
# Go though all attributes of the class
1700
for attrname, attribute in inspect.getmembers(cls):
771
def __new__(mcs, name, bases, attr):
772
# Go through all the base classes which could have D-Bus
773
# methods, signals, or properties in them
774
for base in (b for b in bases
775
if issubclass(b, dbus.service.Object)):
776
# Go though all attributes of the base class
777
for attrname, attribute in inspect.getmembers(base):
1701
778
# Ignore non-D-Bus attributes, and D-Bus attributes
1702
779
# with the wrong interface name
1703
780
if (not hasattr(attribute, "_dbus_interface")
1704
or not attribute._dbus_interface.startswith(
1705
orig_interface_name)):
781
or not attribute._dbus_interface
782
.startswith("se.recompile.Mandos")):
1706
783
continue
1707
784
# Create an alternate D-Bus interface name based on
1708
785
# the current name
1709
alt_interface = attribute._dbus_interface.replace(
1710
orig_interface_name, alt_interface_name)
1711
interface_names.add(alt_interface)
786
alt_interface = (attribute._dbus_interface
787
.replace("se.recompile.Mandos",
788
"se.bsnet.fukt.Mandos"))
1712
789
# Is this a D-Bus signal?
1713
790
if getattr(attribute, "_dbus_is_signal", False):
1714
# Extract the original non-method undecorated
1715
# function by black magic
1716
if sys.version_info.major == 2:
1717
nonmethod_func = (dict(
791
# Extract the original non-method function by
792
# black magic
793
nonmethod_func = (dict(
1718
794
zip(attribute.func_code.co_freevars,
1719
attribute.__closure__))
1720
["func"].cell_contents)
1721
else:
1722
nonmethod_func = (dict(
1723
zip(attribute.__code__.co_freevars,
1724
attribute.__closure__))
1725
["func"].cell_contents)
795
attribute.__closure__))["func"]
796
.cell_contents)
1726
797
# Create a new, but exactly alike, function
1727
798
# object, and decorate it to be a new D-Bus signal
1728
799
# with the alternate D-Bus interface name
1729
new_function = copy_function(nonmethod_func)
1730
new_function = (dbus.service.signal(
1731
alt_interface,
1732
attribute._dbus_signature)(new_function))
1733
# Copy annotations, if any
1734
try:
1735
new_function._dbus_annotations = dict(
1736
attribute._dbus_annotations)
1737
except AttributeError:
1738
pass
1739
800
new_function = (dbus.service.signal
801
(alt_interface,
802
attribute._dbus_signature)
803
(types.FunctionType(
804
nonmethod_func.func_code,
805
nonmethod_func.func_globals,
806
nonmethod_func.func_name,
807
nonmethod_func.func_defaults,
808
nonmethod_func.func_closure)))
1740
809
# Define a creator of a function to call both the
1741
# original and alternate functions, so both the
1742
# original and alternate signals gets sent when
1743
# the function is called
810
# old and new functions, so both the old and new
811
# signals gets sent when the function is called
1744
812
def fixscope(func1, func2):
1745
813
"""This function is a scope container to pass
1746
814
func1 and func2 to the "call_both" function
1747
815
outside of its arguments"""
1748
1749
@functools.wraps(func2)
1750
816
def call_both(*args, **kwargs):
1751
817
"""This function will emit two D-Bus
1752
818
signals by calling func1 and func2"""
1753
819
func1(*args, **kwargs)
1754
820
func2(*args, **kwargs)
1755
# Make wrapper function look like a D-Bus
1756
# signal
1757
for name, attr in inspect.getmembers(func2):
1758
if name.startswith("_dbus_"):
1759
setattr(call_both, name, attr)
1760
1761
821
return call_both
1762
822
# Create the "call_both" function and add it to
1763
823
# the class
1764
attr[attrname] = fixscope(attribute, new_function)
824
attr[attrname] = fixscope(attribute,
825
new_function)
1765
826
# Is this a D-Bus method?
1766
827
elif getattr(attribute, "_dbus_is_method", False):
1767
828
# Create a new, but exactly alike, function
1768
829
# object. Decorate it to be a new D-Bus method
1769
830
# with the alternate D-Bus interface name. Add it
1770
831
# to the class.
1771
attr[attrname] = (
1772
dbus.service.method(
1773
alt_interface,
1774
attribute._dbus_in_signature,
1775
attribute._dbus_out_signature)
1776
(copy_function(attribute)))
1777
# Copy annotations, if any
1778
try:
1779
attr[attrname]._dbus_annotations = dict(
1780
attribute._dbus_annotations)
1781
except AttributeError:
1782
pass
832
attr[attrname] = (dbus.service.method
833
(alt_interface,
834
attribute._dbus_in_signature,
835
attribute._dbus_out_signature)
836
(types.FunctionType
837
(attribute.func_code,
838
attribute.func_globals,
839
attribute.func_name,
840
attribute.func_defaults,
841
attribute.func_closure)))
1783
842
# Is this a D-Bus property?
1784
843
elif getattr(attribute, "_dbus_is_property", False):
1785
844
# Create a new, but exactly alike, function
1786
845
# object, and decorate it to be a new D-Bus
1787
846
# property with the alternate D-Bus interface
1788
847
# name. Add it to the class.
1789
attr[attrname] = (dbus_service_property(
1790
alt_interface, attribute._dbus_signature,
1791
attribute._dbus_access,
1792
attribute._dbus_get_args_options
1793
["byte_arrays"])
1794
(copy_function(attribute)))
1795
# Copy annotations, if any
1796
try:
1797
attr[attrname]._dbus_annotations = dict(
1798
attribute._dbus_annotations)
1799
except AttributeError:
1800
pass
1801
# Is this a D-Bus interface?
1802
elif getattr(attribute, "_dbus_is_interface", False):
1803
# Create a new, but exactly alike, function
1804
# object. Decorate it to be a new D-Bus interface
1805
# with the alternate D-Bus interface name. Add it
1806
# to the class.
1807
attr[attrname] = (
1808
dbus_interface_annotations(alt_interface)
1809
(copy_function(attribute)))
1810
if deprecate:
1811
# Deprecate all alternate interfaces
1812
iname = "_AlternateDBusNames_interface_annotation{}"
1813
for interface_name in interface_names:
1814
1815
@dbus_interface_annotations(interface_name)
1816
def func(self):
1817
return {"org.freedesktop.DBus.Deprecated":
1818
"true"}
1819
# Find an unused name
1820
for aname in (iname.format(i)
1821
for i in itertools.count()):
1822
if aname not in attr:
1823
attr[aname] = func
1824
break
1825
if interface_names:
1826
# Replace the class with a new subclass of it with
1827
# methods, signals, etc. as created above.
1828
if sys.version_info.major == 2:
1829
cls = type(b"{}Alternate".format(cls.__name__),
1830
(cls, ), attr)
1831
else:
1832
cls = type("{}Alternate".format(cls.__name__),
1833
(cls, ), attr)
1834
return cls
1835
1836
return wrapper
1837
1838
1839
@alternate_dbus_interfaces({"se.recompile.Mandos":
1840
"se.bsnet.fukt.Mandos"})
848
attr[attrname] = (dbus_service_property
849
(alt_interface,
850
attribute._dbus_signature,
851
attribute._dbus_access,
852
attribute
853
._dbus_get_args_options
854
["byte_arrays"])
855
(types.FunctionType
856
(attribute.func_code,
857
attribute.func_globals,
858
attribute.func_name,
859
attribute.func_defaults,
860
attribute.func_closure)))
861
return type.__new__(mcs, name, bases, attr)
862
1841
863
class ClientDBus(Client, DBusObjectWithProperties):
1842
864
"""A Client class using D-Bus
1843
865
1844
866
Attributes:
1845
867
dbus_object_path: dbus.ObjectPath
1846
868
bus: dbus.SystemBus()
1847
869
"""
1848
870
1849
871
runtime_expansions = (Client.runtime_expansions
1850
+ ("dbus_object_path", ))
1851
1852
_interface = "se.recompile.Mandos.Client"
1853
872
+ ("dbus_object_path",))
873
1854
874
# dbus.service.Object doesn't use super(), so we can't either.
1855
1856
def __init__(self, bus=None, *args, **kwargs):
875
876
def __init__(self, bus = None, *args, **kwargs):
877
self._approvals_pending = 0
1857
878
self.bus = bus
1858
879
Client.__init__(self, *args, **kwargs)
1859
880
# Only now, when this client is initialized, can it show up on
1860
881
# the D-Bus
1861
client_object_name = str(self.name).translate(
882
client_object_name = unicode(self.name).translate(
1862
883
{ord("."): ord("_"),
1863
884
ord("-"): ord("_")})
1864
self.dbus_object_path = dbus.ObjectPath(
1865
"/clients/" + client_object_name)
885
self.dbus_object_path = (dbus.ObjectPath
886
("/clients/" + client_object_name))
1866
887
DBusObjectWithProperties.__init__(self, self.bus,
1867
888
self.dbus_object_path)
1868
1869
def notifychangeproperty(transform_func, dbus_name,
1870
type_func=lambda x: x,
1871
variant_level=1,
1872
invalidate_only=False,
1873
_interface=_interface):
889
890
def notifychangeproperty(transform_func,
891
dbus_name, type_func=lambda x: x,
892
variant_level=1):
1874
893
""" Modify a variable so that it's a property which announces
1875
894
its changes to DBus.
1876
895
1881
900
to the D-Bus. Default: no transform
1882
901
variant_level: D-Bus variant level. Default: 1
1883
902
"""
1884
attrname = "_{}".format(dbus_name)
1885
903
attrname = "_{0}".format(dbus_name)
1886
904
def setter(self, value):
1887
905
if hasattr(self, "dbus_object_path"):
1888
906
if (not hasattr(self, attrname) or
1889
907
type_func(getattr(self, attrname, None))
1890
908
!= type_func(value)):
1891
if invalidate_only:
1892
self.PropertiesChanged(
1893
_interface, dbus.Dictionary(),
1894
dbus.Array((dbus_name, )))
1895
else:
1896
dbus_value = transform_func(
1897
type_func(value),
1898
variant_level=variant_level)
1899
self.PropertyChanged(dbus.String(dbus_name),
1900
dbus_value)
1901
self.PropertiesChanged(
1902
_interface,
1903
dbus.Dictionary({dbus.String(dbus_name):
1904
dbus_value}),
1905
dbus.Array())
909
dbus_value = transform_func(type_func(value),
910
variant_level
911
=variant_level)
912
self.PropertyChanged(dbus.String(dbus_name),
913
dbus_value)
1906
914
setattr(self, attrname, value)
1907
915
1908
916
return property(lambda self: getattr(self, attrname), setter)
1909
917
918
1910
919
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1911
920
approvals_pending = notifychangeproperty(dbus.Boolean,
1912
921
"ApprovalPending",
1913
type_func=bool)
922
type_func = bool)
1914
923
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1915
924
last_enabled = notifychangeproperty(datetime_to_dbus,
1916
925
"LastEnabled")
1917
checker = notifychangeproperty(
1918
dbus.Boolean, "CheckerRunning",
1919
type_func=lambda checker: checker is not None)
926
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
927
type_func = lambda checker:
928
checker is not None)
1920
929
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1921
930
"LastCheckedOK")
1922
last_checker_status = notifychangeproperty(dbus.Int16,
1923
"LastCheckerStatus")
1924
931
last_approval_request = notifychangeproperty(
1925
932
datetime_to_dbus, "LastApprovalRequest")
1926
933
approved_by_default = notifychangeproperty(dbus.Boolean,
1927
934
"ApprovedByDefault")
1928
approval_delay = notifychangeproperty(
1929
dbus.UInt64, "ApprovalDelay",
1930
type_func=lambda td: td.total_seconds() * 1000)
935
approval_delay = notifychangeproperty(dbus.UInt16,
936
"ApprovalDelay",
937
type_func =
938
_timedelta_to_milliseconds)
1931
939
approval_duration = notifychangeproperty(
1932
dbus.UInt64, "ApprovalDuration",
1933
type_func=lambda td: td.total_seconds() * 1000)
940
dbus.UInt16, "ApprovalDuration",
941
type_func = _timedelta_to_milliseconds)
1934
942
host = notifychangeproperty(dbus.String, "Host")
1935
timeout = notifychangeproperty(
1936
dbus.UInt64, "Timeout",
1937
type_func=lambda td: td.total_seconds() * 1000)
943
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
944
type_func =
945
_timedelta_to_milliseconds)
1938
946
extended_timeout = notifychangeproperty(
1939
dbus.UInt64, "ExtendedTimeout",
1940
type_func=lambda td: td.total_seconds() * 1000)
1941
interval = notifychangeproperty(
1942
dbus.UInt64, "Interval",
1943
type_func=lambda td: td.total_seconds() * 1000)
947
dbus.UInt16, "ExtendedTimeout",
948
type_func = _timedelta_to_milliseconds)
949
interval = notifychangeproperty(dbus.UInt16,
950
"Interval",
951
type_func =
952
_timedelta_to_milliseconds)
1944
953
checker_command = notifychangeproperty(dbus.String, "Checker")
1945
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1946
invalidate_only=True)
1947
954
1948
955
del notifychangeproperty
1949
956
1950
957
def __del__(self, *args, **kwargs):
1951
958
try:
1952
959
self.remove_from_connection()
1955
962
if hasattr(DBusObjectWithProperties, "__del__"):
1956
963
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1957
964
Client.__del__(self, *args, **kwargs)
1958
1959
def checker_callback(self, source, condition,
1960
connection, command, *args, **kwargs):
1961
ret = Client.checker_callback(self, source, condition,
1962
connection, command, *args,
1963
**kwargs)
1964
exitstatus = self.last_checker_status
1965
if exitstatus >= 0:
965
966
def checker_callback(self, pid, condition, command,
967
*args, **kwargs):
968
self.checker_callback_tag = None
969
self.checker = None
970
if os.WIFEXITED(condition):
971
exitstatus = os.WEXITSTATUS(condition)
1966
972
# Emit D-Bus signal
1967
973
self.CheckerCompleted(dbus.Int16(exitstatus),
1968
# This is specific to GNU libC
1969
dbus.Int64(exitstatus << 8),
974
dbus.Int64(condition),
1970
975
dbus.String(command))
1971
976
else:
1972
977
# Emit D-Bus signal
1973
978
self.CheckerCompleted(dbus.Int16(-1),
1974
dbus.Int64(
1975
# This is specific to GNU libC
1976
(exitstatus << 8)
1977
| self.last_checker_signal),
979
dbus.Int64(condition),
1978
980
dbus.String(command))
1979
return ret
1980
981
982
return Client.checker_callback(self, pid, condition, command,
983
*args, **kwargs)
984
1981
985
def start_checker(self, *args, **kwargs):
1982
old_checker_pid = getattr(self.checker, "pid", None)
986
old_checker = self.checker
987
if self.checker is not None:
988
old_checker_pid = self.checker.pid
989
else:
990
old_checker_pid = None
1983
991
r = Client.start_checker(self, *args, **kwargs)
1984
992
# Only if new checker process was started
1985
993
if (self.checker is not None
1987
995
# Emit D-Bus signal
1988
996
self.CheckerStarted(self.current_checker_command)
1989
997
return r
1990
998
1991
999
def _reset_approved(self):
1992
self.approved = None
1000
self._approved = None
1993
1001
return False
1994
1002
1995
1003
def approve(self, value=True):
1996
self.approved = value
1997
GLib.timeout_add(int(self.approval_duration.total_seconds()
1998
* 1000), self._reset_approved)
1999
1004
self.send_changedstate()
2000
2001
# D-Bus methods, signals & properties
2002
2003
# Interfaces
2004
2005
# Signals
2006
1005
self._approved = value
1006
gobject.timeout_add(_timedelta_to_milliseconds
1007
(self.approval_duration),
1008
self._reset_approved)
1009
1010
1011
## D-Bus methods, signals & properties
1012
_interface = "se.recompile.Mandos.Client"
1013
1014
## Signals
1015
2007
1016
# CheckerCompleted - signal
2008
1017
@dbus.service.signal(_interface, signature="nxs")
2009
1018
def CheckerCompleted(self, exitcode, waitstatus, command):
2010
1019
"D-Bus signal"
2011
1020
pass
2012
1021
2013
1022
# CheckerStarted - signal
2014
1023
@dbus.service.signal(_interface, signature="s")
2015
1024
def CheckerStarted(self, command):
2016
1025
"D-Bus signal"
2017
1026
pass
2018
1027
2019
1028
# PropertyChanged - signal
2020
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2021
1029
@dbus.service.signal(_interface, signature="sv")
2022
1030
def PropertyChanged(self, property, value):
2023
1031
"D-Bus signal"
2024
1032
pass
2025
1033
2026
1034
# GotSecret - signal
2027
1035
@dbus.service.signal(_interface)
2028
1036
def GotSecret(self):
2031
1039
server to mandos-client
2032
1040
"""
2033
1041
pass
2034
1042
2035
1043
# Rejected - signal
2036
1044
@dbus.service.signal(_interface, signature="s")
2037
1045
def Rejected(self, reason):
2038
1046
"D-Bus signal"
2039
1047
pass
2040
1048
2041
1049
# NeedApproval - signal
2042
1050
@dbus.service.signal(_interface, signature="tb")
2043
1051
def NeedApproval(self, timeout, default):
2044
1052
"D-Bus signal"
2045
1053
return self.need_approval()
2046
2047
# Methods
2048
1054
1055
## Methods
1056
2049
1057
# Approve - method
2050
1058
@dbus.service.method(_interface, in_signature="b")
2051
1059
def Approve(self, value):
2052
1060
self.approve(value)
2053
1061
2054
1062
# CheckedOK - method
2055
1063
@dbus.service.method(_interface)
2056
1064
def CheckedOK(self):
2057
1065
self.checked_ok()
2058
1066
2059
1067
# Enable - method
2060
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2061
1068
@dbus.service.method(_interface)
2062
1069
def Enable(self):
2063
1070
"D-Bus method"
2064
1071
self.enable()
2065
1072
2066
1073
# StartChecker - method
2067
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2068
1074
@dbus.service.method(_interface)
2069
1075
def StartChecker(self):
2070
1076
"D-Bus method"
2071
1077
self.start_checker()
2072
1078
2073
1079
# Disable - method
2074
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2075
1080
@dbus.service.method(_interface)
2076
1081
def Disable(self):
2077
1082
"D-Bus method"
2078
1083
self.disable()
2079
1084
2080
1085
# StopChecker - method
2081
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2082
1086
@dbus.service.method(_interface)
2083
1087
def StopChecker(self):
2084
1088
self.stop_checker()
2085
2086
# Properties
2087
1089
1090
## Properties
1091
2088
1092
# ApprovalPending - property
2089
1093
@dbus_service_property(_interface, signature="b", access="read")
2090
1094
def ApprovalPending_dbus_property(self):
2091
1095
return dbus.Boolean(bool(self.approvals_pending))
2092
1096
2093
1097
# ApprovedByDefault - property
2094
@dbus_service_property(_interface,
2095
signature="b",
1098
@dbus_service_property(_interface, signature="b",
2096
1099
access="readwrite")
2097
1100
def ApprovedByDefault_dbus_property(self, value=None):
2098
1101
if value is None: # get
2099
1102
return dbus.Boolean(self.approved_by_default)
2100
1103
self.approved_by_default = bool(value)
2101
1104
2102
1105
# ApprovalDelay - property
2103
@dbus_service_property(_interface,
2104
signature="t",
1106
@dbus_service_property(_interface, signature="t",
2105
1107
access="readwrite")
2106
1108
def ApprovalDelay_dbus_property(self, value=None):
2107
1109
if value is None: # get
2108
return dbus.UInt64(self.approval_delay.total_seconds()
2109
* 1000)
1110
return dbus.UInt64(self.approval_delay_milliseconds())
2110
1111
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2111
1112
2112
1113
# ApprovalDuration - property
2113
@dbus_service_property(_interface,
2114
signature="t",
1114
@dbus_service_property(_interface, signature="t",
2115
1115
access="readwrite")
2116
1116
def ApprovalDuration_dbus_property(self, value=None):
2117
1117
if value is None: # get
2118
return dbus.UInt64(self.approval_duration.total_seconds()
2119
* 1000)
1118
return dbus.UInt64(_timedelta_to_milliseconds(
1119
self.approval_duration))
2120
1120
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2121
1121
2122
1122
# Name - property
2123
@dbus_annotations(
2124
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2125
1123
@dbus_service_property(_interface, signature="s", access="read")
2126
1124
def Name_dbus_property(self):
2127
1125
return dbus.String(self.name)
2128
2129
# KeyID - property
2130
@dbus_annotations(
2131
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2132
@dbus_service_property(_interface, signature="s", access="read")
2133
def KeyID_dbus_property(self):
2134
return dbus.String(self.key_id)
2135
1126
2136
1127
# Fingerprint - property
2137
@dbus_annotations(
2138
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2139
1128
@dbus_service_property(_interface, signature="s", access="read")
2140
1129
def Fingerprint_dbus_property(self):
2141
1130
return dbus.String(self.fingerprint)
2142
1131
2143
1132
# Host - property
2144
@dbus_service_property(_interface,
2145
signature="s",
1133
@dbus_service_property(_interface, signature="s",
2146
1134
access="readwrite")
2147
1135
def Host_dbus_property(self, value=None):
2148
1136
if value is None: # get
2149
1137
return dbus.String(self.host)
2150
self.host = str(value)
2151
1138
self.host = value
1139
2152
1140
# Created - property
2153
@dbus_annotations(
2154
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2155
1141
@dbus_service_property(_interface, signature="s", access="read")
2156
1142
def Created_dbus_property(self):
2157
return datetime_to_dbus(self.created)
2158
1143
return dbus.String(datetime_to_dbus(self.created))
1144
2159
1145
# LastEnabled - property
2160
1146
@dbus_service_property(_interface, signature="s", access="read")
2161
1147
def LastEnabled_dbus_property(self):
2162
1148
return datetime_to_dbus(self.last_enabled)
2163
1149
2164
1150
# Enabled - property
2165
@dbus_service_property(_interface,
2166
signature="b",
1151
@dbus_service_property(_interface, signature="b",
2167
1152
access="readwrite")
2168
1153
def Enabled_dbus_property(self, value=None):
2169
1154
if value is None: # get
2172
1157
self.enable()
2173
1158
else:
2174
1159
self.disable()
2175
1160
2176
1161
# LastCheckedOK - property
2177
@dbus_service_property(_interface,
2178
signature="s",
1162
@dbus_service_property(_interface, signature="s",
2179
1163
access="readwrite")
2180
1164
def LastCheckedOK_dbus_property(self, value=None):
2181
1165
if value is not None:
2182
1166
self.checked_ok()
2183
1167
return
2184
1168
return datetime_to_dbus(self.last_checked_ok)
2185
2186
# LastCheckerStatus - property
2187
@dbus_service_property(_interface, signature="n", access="read")
2188
def LastCheckerStatus_dbus_property(self):
2189
return dbus.Int16(self.last_checker_status)
2190
1169
2191
1170
# Expires - property
2192
1171
@dbus_service_property(_interface, signature="s", access="read")
2193
1172
def Expires_dbus_property(self):
2194
1173
return datetime_to_dbus(self.expires)
2195
1174
2196
1175
# LastApprovalRequest - property
2197
1176
@dbus_service_property(_interface, signature="s", access="read")
2198
1177
def LastApprovalRequest_dbus_property(self):
2199
1178
return datetime_to_dbus(self.last_approval_request)
2200
1179
2201
1180
# Timeout - property
2202
@dbus_service_property(_interface,
2203
signature="t",
1181
@dbus_service_property(_interface, signature="t",
2204
1182
access="readwrite")
2205
1183
def Timeout_dbus_property(self, value=None):
2206
1184
if value is None: # get
2207
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2208
old_timeout = self.timeout
1185
return dbus.UInt64(self.timeout_milliseconds())
2209
1186
self.timeout = datetime.timedelta(0, 0, 0, value)
2210
# Reschedule disabling
2211
if self.enabled:
2212
now = datetime.datetime.utcnow()
2213
self.expires += self.timeout - old_timeout
2214
if self.expires <= now:
2215
# The timeout has passed
2216
self.disable()
2217
else:
2218
if (getattr(self, "disable_initiator_tag", None)
2219
is None):
2220
return
2221
GLib.source_remove(self.disable_initiator_tag)
2222
self.disable_initiator_tag = GLib.timeout_add(
2223
int((self.expires - now).total_seconds() * 1000),
2224
self.disable)
2225
1187
if getattr(self, "disable_initiator_tag", None) is None:
1188
return
1189
# Reschedule timeout
1190
gobject.source_remove(self.disable_initiator_tag)
1191
self.disable_initiator_tag = None
1192
self.expires = None
1193
time_to_die = _timedelta_to_milliseconds((self
1194
.last_checked_ok
1195
+ self.timeout)
1196
- datetime.datetime
1197
.utcnow())
1198
if time_to_die <= 0:
1199
# The timeout has passed
1200
self.disable()
1201
else:
1202
self.expires = (datetime.datetime.utcnow()
1203
+ datetime.timedelta(milliseconds =
1204
time_to_die))
1205
self.disable_initiator_tag = (gobject.timeout_add
1206
(time_to_die, self.disable))
1207
2226
1208
# ExtendedTimeout - property
2227
@dbus_service_property(_interface,
2228
signature="t",
1209
@dbus_service_property(_interface, signature="t",
2229
1210
access="readwrite")
2230
1211
def ExtendedTimeout_dbus_property(self, value=None):
2231
1212
if value is None: # get
2232
return dbus.UInt64(self.extended_timeout.total_seconds()
2233
* 1000)
1213
return dbus.UInt64(self.extended_timeout_milliseconds())
2234
1214
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2235
1215
2236
1216
# Interval - property
2237
@dbus_service_property(_interface,
2238
signature="t",
1217
@dbus_service_property(_interface, signature="t",
2239
1218
access="readwrite")
2240
1219
def Interval_dbus_property(self, value=None):
2241
1220
if value is None: # get
2242
return dbus.UInt64(self.interval.total_seconds() * 1000)
1221
return dbus.UInt64(self.interval_milliseconds())
2243
1222
self.interval = datetime.timedelta(0, 0, 0, value)
2244
1223
if getattr(self, "checker_initiator_tag", None) is None:
2245
1224
return
2246
if self.enabled:
2247
# Reschedule checker run
2248
GLib.source_remove(self.checker_initiator_tag)
2249
self.checker_initiator_tag = GLib.timeout_add(
2250
value, self.start_checker)
2251
self.start_checker() # Start one now, too
2252
1225
# Reschedule checker run
1226
gobject.source_remove(self.checker_initiator_tag)
1227
self.checker_initiator_tag = (gobject.timeout_add
1228
(value, self.start_checker))
1229
self.start_checker() # Start one now, too
1230
2253
1231
# Checker - property
2254
@dbus_service_property(_interface,
2255
signature="s",
1232
@dbus_service_property(_interface, signature="s",
2256
1233
access="readwrite")
2257
1234
def Checker_dbus_property(self, value=None):
2258
1235
if value is None: # get
2259
1236
return dbus.String(self.checker_command)
2260
self.checker_command = str(value)
2261
1237
self.checker_command = value
1238
2262
1239
# CheckerRunning - property
2263
@dbus_service_property(_interface,
2264
signature="b",
1240
@dbus_service_property(_interface, signature="b",
2265
1241
access="readwrite")
2266
1242
def CheckerRunning_dbus_property(self, value=None):
2267
1243
if value is None: # get
2270
1246
self.start_checker()
2271
1247
else:
2272
1248
self.stop_checker()
2273
1249
2274
1250
# ObjectPath - property
2275
@dbus_annotations(
2276
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2277
"org.freedesktop.DBus.Deprecated": "true"})
2278
1251
@dbus_service_property(_interface, signature="o", access="read")
2279
1252
def ObjectPath_dbus_property(self):
2280
return self.dbus_object_path # is already a dbus.ObjectPath
2281
1253
return self.dbus_object_path # is already a dbus.ObjectPath
1254
2282
1255
# Secret = property
2283
@dbus_annotations(
2284
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2285
"invalidates"})
2286
@dbus_service_property(_interface,
2287
signature="ay",
2288
access="write",
2289
byte_arrays=True)
1256
@dbus_service_property(_interface, signature="ay",
1257
access="write", byte_arrays=True)
2290
1258
def Secret_dbus_property(self, value):
2291
self.secret = bytes(value)
2292
1259
self.secret = str(value)
1260
2293
1261
del _interface
2294
1262
2295
1263
2296
class ProxyClient:
2297
def __init__(self, child_pipe, key_id, fpr, address):
1264
class ProxyClient(object):
1265
def __init__(self, child_pipe, fpr, address):
2298
1266
self._pipe = child_pipe
2299
self._pipe.send(("init", key_id, fpr, address))
1267
self._pipe.send(('init', fpr, address))
2300
1268
if not self._pipe.recv():
2301
raise KeyError(key_id or fpr)
2302
1269
raise KeyError()
1270
2303
1271
def __getattribute__(self, name):
2304
if name == "_pipe":
1272
if(name == '_pipe'):
2305
1273
return super(ProxyClient, self).__getattribute__(name)
2306
self._pipe.send(("getattr", name))
1274
self._pipe.send(('getattr', name))
2307
1275
data = self._pipe.recv()
2308
if data[0] == "data":
1276
if data[0] == 'data':
2309
1277
return data[1]
2310
if data[0] == "function":
2311
1278
if data[0] == 'function':
2312
1279
def func(*args, **kwargs):
2313
self._pipe.send(("funcall", name, args, kwargs))
1280
self._pipe.send(('funcall', name, args, kwargs))
2314
1281
return self._pipe.recv()[1]
2315
2316
1282
return func
2317
1283
2318
1284
def __setattr__(self, name, value):
2319
if name == "_pipe":
1285
if(name == '_pipe'):
2320
1286
return super(ProxyClient, self).__setattr__(name, value)
2321
self._pipe.send(("setattr", name, value))
1287
self._pipe.send(('setattr', name, value))
2322
1288
1289
class ClientDBusTransitional(ClientDBus):
1290
__metaclass__ = AlternateDBusNamesMetaclass
2323
1291
2324
1292
class ClientHandler(socketserver.BaseRequestHandler, object):
2325
1293
"""A class to handle client connections.
2326
1294
2327
1295
Instantiated once for each connection to handle it.
2328
1296
Note: This will run in its own forked process."""
2329
1297
2330
1298
def handle(self):
2331
1299
with contextlib.closing(self.server.child_pipe) as child_pipe:
2332
log.info("TCP connection from: %s",
2333
str(self.client_address))
2334
log.debug("Pipe FD: %d", self.server.child_pipe.fileno())
2335
2336
session = gnutls.ClientSession(self.request)
2337
2338
# priority = ":".join(("NONE", "+VERS-TLS1.1",
2339
# "+AES-256-CBC", "+SHA1",
2340
# "+COMP-NULL", "+CTYPE-OPENPGP",
2341
# "+DHE-DSS"))
1300
logger.info("TCP connection from: %s",
1301
unicode(self.client_address))
1302
logger.debug("Pipe FD: %d",
1303
self.server.child_pipe.fileno())
1304
1305
session = (gnutls.connection
1306
.ClientSession(self.request,
1307
gnutls.connection
1308
.X509Credentials()))
1309
1310
# Note: gnutls.connection.X509Credentials is really a
1311
# generic GnuTLS certificate credentials object so long as
1312
# no X.509 keys are added to it. Therefore, we can use it
1313
# here despite using OpenPGP certificates.
1314
1315
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1316
# "+AES-256-CBC", "+SHA1",
1317
# "+COMP-NULL", "+CTYPE-OPENPGP",
1318
# "+DHE-DSS"))
2342
1319
# Use a fallback default, since this MUST be set.
2343
1320
priority = self.server.gnutls_priority
2344
1321
if priority is None:
2345
1322
priority = "NORMAL"
2346
gnutls.priority_set_direct(session,
2347
priority.encode("utf-8"), None)
2348
1323
(gnutls.library.functions
1324
.gnutls_priority_set_direct(session._c_object,
1325
priority, None))
1326
2349
1327
# Start communication using the Mandos protocol
2350
1328
# Get protocol number
2351
1329
line = self.request.makefile().readline()
2352
log.debug("Protocol version: %r", line)
1330
logger.debug("Protocol version: %r", line)
2353
1331
try:
2354
1332
if int(line.strip().split()[0]) > 1:
2355
raise RuntimeError(line)
1333
raise RuntimeError
2356
1334
except (ValueError, IndexError, RuntimeError) as error:
2357
log.error("Unknown protocol version: %s", error)
1335
logger.error("Unknown protocol version: %s", error)
2358
1336
return
2359
1337
2360
1338
# Start GnuTLS connection
2361
1339
try:
2362
1340
session.handshake()
2363
except gnutls.Error as error:
2364
log.warning("Handshake failed: %s", error)
1341
except gnutls.errors.GNUTLSError as error:
1342
logger.warning("Handshake failed: %s", error)
2365
1343
# Do not run session.bye() here: the session is not
2366
1344
# established. Just abandon the request.
2367
1345
return
2368
log.debug("Handshake succeeded")
2369
1346
logger.debug("Handshake succeeded")
1347
2370
1348
approval_required = False
2371
1349
try:
2372
if gnutls.has_rawpk:
2373
fpr = b""
2374
try:
2375
key_id = self.key_id(
2376
self.peer_certificate(session))
2377
except (TypeError, gnutls.Error) as error:
2378
log.warning("Bad certificate: %s", error)
2379
return
2380
log.debug("Key ID: %s",
2381
key_id.decode("utf-8",
2382
errors="replace"))
2383
2384
else:
2385
key_id = b""
2386
try:
2387
fpr = self.fingerprint(
2388
self.peer_certificate(session))
2389
except (TypeError, gnutls.Error) as error:
2390
log.warning("Bad certificate: %s", error)
2391
return
2392
log.debug("Fingerprint: %s", fpr)
2393
2394
try:
2395
client = ProxyClient(child_pipe, key_id, fpr,
1350
try:
1351
fpr = self.fingerprint(self.peer_certificate
1352
(session))
1353
except (TypeError,
1354
gnutls.errors.GNUTLSError) as error:
1355
logger.warning("Bad certificate: %s", error)
1356
return
1357
logger.debug("Fingerprint: %s", fpr)
1358
1359
try:
1360
client = ProxyClient(child_pipe, fpr,
2396
1361
self.client_address)
2397
1362
except KeyError:
2398
1363
return
2399
1364
2400
1365
if client.approval_delay:
2401
1366
delay = client.approval_delay
2402
1367
client.approvals_pending += 1
2403
1368
approval_required = True
2404
1369
2405
1370
while True:
2406
1371
if not client.enabled:
2407
log.info("Client %s is disabled", client.name)
1372
logger.info("Client %s is disabled",
1373
client.name)
2408
1374
if self.server.use_dbus:
2409
1375
# Emit D-Bus signal
2410
1376
client.Rejected("Disabled")
2411
1377
return
2412
2413
if client.approved or not client.approval_delay:
2414
# We are approved or approval is disabled
1378
1379
if client._approved or not client.approval_delay:
1380
#We are approved or approval is disabled
2415
1381
break
2416
elif client.approved is None:
2417
log.info("Client %s needs approval",
2418
client.name)
1382
elif client._approved is None:
1383
logger.info("Client %s needs approval",
1384
client.name)
2419
1385
if self.server.use_dbus:
2420
1386
# Emit D-Bus signal
2421
1387
client.NeedApproval(
2422
client.approval_delay.total_seconds()
2423
* 1000, client.approved_by_default)
1388
client.approval_delay_milliseconds(),
1389
client.approved_by_default)
2424
1390
else:
2425
log.warning("Client %s was not approved",
2426
client.name)
1391
logger.warning("Client %s was not approved",
1392
client.name)
2427
1393
if self.server.use_dbus:
2428
1394
# Emit D-Bus signal
2429
1395
client.Rejected("Denied")
2430
1396
return
2431
2432
# wait until timeout or approved
1397
1398
#wait until timeout or approved
2433
1399
time = datetime.datetime.now()
2434
1400
client.changedstate.acquire()
2435
client.changedstate.wait(delay.total_seconds())
1401
(client.changedstate.wait
1402
(float(client._timedelta_to_milliseconds(delay)
1403
/ 1000)))
2436
1404
client.changedstate.release()
2437
1405
time2 = datetime.datetime.now()
2438
1406
if (time2 - time) >= delay:
2439
1407
if not client.approved_by_default:
2440
log.warning("Client %s timed out while"
2441
" waiting for approval",
2442
client.name)
1408
logger.warning("Client %s timed out while"
1409
" waiting for approval",
1410
client.name)
2443
1411
if self.server.use_dbus:
2444
1412
# Emit D-Bus signal
2445
1413
client.Rejected("Approval timed out")
2448
1416
break
2449
1417
else:
2450
1418
delay -= time2 - time
2451
2452
try:
2453
session.send(client.secret)
2454
except gnutls.Error as error:
2455
log.warning("gnutls send failed", exc_info=error)
2456
return
2457
2458
log.info("Sending secret to %s", client.name)
1419
1420
sent_size = 0
1421
while sent_size < len(client.secret):
1422
try:
1423
sent = session.send(client.secret[sent_size:])
1424
except gnutls.errors.GNUTLSError as error:
1425
logger.warning("gnutls send failed")
1426
return
1427
logger.debug("Sent: %d, remaining: %d",
1428
sent, len(client.secret)
1429
- (sent_size + sent))
1430
sent_size += sent
1431
1432
logger.info("Sending secret to %s", client.name)
2459
1433
# bump the timeout using extended_timeout
2460
client.bump_timeout(client.extended_timeout)
1434
client.checked_ok(client.extended_timeout)
2461
1435
if self.server.use_dbus:
2462
1436
# Emit D-Bus signal
2463
1437
client.GotSecret()
2464
1438
2465
1439
finally:
2466
1440
if approval_required:
2467
1441
client.approvals_pending -= 1
2468
1442
try:
2469
1443
session.bye()
2470
except gnutls.Error as error:
2471
log.warning("GnuTLS bye failed", exc_info=error)
2472
1444
except gnutls.errors.GNUTLSError as error:
1445
logger.warning("GnuTLS bye failed")
1446
2473
1447
@staticmethod
2474
1448
def peer_certificate(session):
2475
"Return the peer's certificate as a bytestring"
2476
try:
2477
cert_type = gnutls.certificate_type_get2(
2478
session, gnutls.CTYPE_PEERS)
2479
except AttributeError:
2480
cert_type = gnutls.certificate_type_get(session)
2481
if gnutls.has_rawpk:
2482
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2483
else:
2484
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2485
# If not a valid certificate type...
2486
if cert_type not in valid_cert_types:
2487
log.info("Cert type %r not in %r", cert_type,
2488
valid_cert_types)
2489
# ...return invalid data
2490
return b""
1449
"Return the peer's OpenPGP certificate as a bytestring"
1450
# If not an OpenPGP certificate...
1451
if (gnutls.library.functions
1452
.gnutls_certificate_type_get(session._c_object)
1453
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1454
# ...do the normal thing
1455
return session.peer_certificate
2491
1456
list_size = ctypes.c_uint(1)
2492
cert_list = (gnutls.certificate_get_peers
2493
(session, ctypes.byref(list_size)))
1457
cert_list = (gnutls.library.functions
1458
.gnutls_certificate_get_peers
1459
(session._c_object, ctypes.byref(list_size)))
2494
1460
if not bool(cert_list) and list_size.value != 0:
2495
raise gnutls.Error("error getting peer certificate")
1461
raise gnutls.errors.GNUTLSError("error getting peer"
1462
" certificate")
2496
1463
if list_size.value == 0:
2497
1464
return None
2498
1465
cert = cert_list[0]
2499
1466
return ctypes.string_at(cert.data, cert.size)
2500
2501
@staticmethod
2502
def key_id(certificate):
2503
"Convert a certificate bytestring to a hexdigit key ID"
2504
# New GnuTLS "datum" with the public key
2505
datum = gnutls.datum_t(
2506
ctypes.cast(ctypes.c_char_p(certificate),
2507
ctypes.POINTER(ctypes.c_ubyte)),
2508
ctypes.c_uint(len(certificate)))
2509
# XXX all these need to be created in the gnutls "module"
2510
# New empty GnuTLS certificate
2511
pubkey = gnutls.pubkey_t()
2512
gnutls.pubkey_init(ctypes.byref(pubkey))
2513
# Import the raw public key into the certificate
2514
gnutls.pubkey_import(pubkey,
2515
ctypes.byref(datum),
2516
gnutls.X509_FMT_DER)
2517
# New buffer for the key ID
2518
buf = ctypes.create_string_buffer(32)
2519
buf_len = ctypes.c_size_t(len(buf))
2520
# Get the key ID from the raw public key into the buffer
2521
gnutls.pubkey_get_key_id(
2522
pubkey,
2523
gnutls.KEYID_USE_SHA256,
2524
ctypes.cast(ctypes.byref(buf),
2525
ctypes.POINTER(ctypes.c_ubyte)),
2526
ctypes.byref(buf_len))
2527
# Deinit the certificate
2528
gnutls.pubkey_deinit(pubkey)
2529
2530
# Convert the buffer to a Python bytestring
2531
key_id = ctypes.string_at(buf, buf_len.value)
2532
# Convert the bytestring to hexadecimal notation
2533
hex_key_id = binascii.hexlify(key_id).upper()
2534
return hex_key_id
2535
1467
2536
1468
@staticmethod
2537
1469
def fingerprint(openpgp):
2538
1470
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2539
1471
# New GnuTLS "datum" with the OpenPGP public key
2540
datum = gnutls.datum_t(
2541
ctypes.cast(ctypes.c_char_p(openpgp),
2542
ctypes.POINTER(ctypes.c_ubyte)),
2543
ctypes.c_uint(len(openpgp)))
1472
datum = (gnutls.library.types
1473
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1474
ctypes.POINTER
1475
(ctypes.c_ubyte)),
1476
ctypes.c_uint(len(openpgp))))
2544
1477
# New empty GnuTLS certificate
2545
crt = gnutls.openpgp_crt_t()
2546
gnutls.openpgp_crt_init(ctypes.byref(crt))
1478
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1479
(gnutls.library.functions
1480
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2547
1481
# Import the OpenPGP public key into the certificate
2548
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2549
gnutls.OPENPGP_FMT_RAW)
1482
(gnutls.library.functions
1483
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1484
gnutls.library.constants
1485
.GNUTLS_OPENPGP_FMT_RAW))
2550
1486
# Verify the self signature in the key
2551
1487
crtverify = ctypes.c_uint()
2552
gnutls.openpgp_crt_verify_self(crt, 0,
2553
ctypes.byref(crtverify))
1488
(gnutls.library.functions
1489
.gnutls_openpgp_crt_verify_self(crt, 0,
1490
ctypes.byref(crtverify)))
2554
1491
if crtverify.value != 0:
2555
gnutls.openpgp_crt_deinit(crt)
2556
raise gnutls.CertificateSecurityError(code
2557
=crtverify.value)
1492
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1493
raise (gnutls.errors.CertificateSecurityError
1494
("Verify failed"))
2558
1495
# New buffer for the fingerprint
2559
1496
buf = ctypes.create_string_buffer(20)
2560
1497
buf_len = ctypes.c_size_t()
2561
1498
# Get the fingerprint from the certificate into the buffer
2562
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2563
ctypes.byref(buf_len))
1499
(gnutls.library.functions
1500
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1501
ctypes.byref(buf_len)))
2564
1502
# Deinit the certificate
2565
gnutls.openpgp_crt_deinit(crt)
1503
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2566
1504
# Convert the buffer to a Python bytestring
2567
1505
fpr = ctypes.string_at(buf, buf_len.value)
2568
1506
# Convert the bytestring to hexadecimal notation
2569
hex_fpr = binascii.hexlify(fpr).upper()
1507
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2570
1508
return hex_fpr
2571
1509
2572
1510
2573
class MultiprocessingMixIn:
1511
class MultiprocessingMixIn(object):
2574
1512
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2575
2576
1513
def sub_process_main(self, request, address):
2577
1514
try:
2578
1515
self.finish_request(request, address)
2579
except Exception:
1516
except:
2580
1517
self.handle_error(request, address)
2581
1518
self.close_request(request)
2582
1519
2583
1520
def process_request(self, request, address):
2584
1521
"""Start a new process to process the request."""
2585
proc = multiprocessing.Process(target=self.sub_process_main,
2586
args=(request, address))
1522
proc = multiprocessing.Process(target = self.sub_process_main,
1523
args = (request,
1524
address))
2587
1525
proc.start()
2588
1526
return proc
2589
1527
2590
1528
2591
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1529
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2592
1530
""" adds a pipe to the MixIn """
2593
2594
1531
def process_request(self, request, client_address):
2595
1532
"""Overrides and wraps the original process_request().
2596
1533
2597
1534
This function creates a new pipe in self.pipe
2598
1535
"""
2599
1536
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2600
1537
2601
1538
proc = MultiprocessingMixIn.process_request(self, request,
2602
1539
client_address)
2603
1540
self.child_pipe.close()
2604
1541
self.add_pipe(parent_pipe, proc)
2605
1542
2606
1543
def add_pipe(self, parent_pipe, proc):
2607
1544
"""Dummy function; override as necessary"""
2608
raise NotImplementedError()
1545
raise NotImplementedError
2609
1546
2610
1547
2611
1548
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2612
socketserver.TCPServer):
2613
"""IPv6-capable TCP server. Accepts None as address and/or port
2614
1549
socketserver.TCPServer, object):
1550
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1551
2615
1552
Attributes:
2616
1553
enabled: Boolean; whether this server is activated yet
2617
1554
interface: None or a network interface name (string)
2618
1555
use_ipv6: Boolean; to use IPv6 or not
2619
1556
"""
2620
2621
1557
def __init__(self, server_address, RequestHandlerClass,
2622
interface=None,
2623
use_ipv6=True,
2624
socketfd=None):
2625
"""If socketfd is set, use that file descriptor instead of
2626
creating a new one with socket.socket().
2627
"""
1558
interface=None, use_ipv6=True):
2628
1559
self.interface = interface
2629
1560
if use_ipv6:
2630
1561
self.address_family = socket.AF_INET6
2631
if socketfd is not None:
2632
# Save the file descriptor
2633
self.socketfd = socketfd
2634
# Save the original socket.socket() function
2635
self.socket_socket = socket.socket
2636
2637
# To implement --socket, we monkey patch socket.socket.
2638
#
2639
# (When socketserver.TCPServer is a new-style class, we
2640
# could make self.socket into a property instead of monkey
2641
# patching socket.socket.)
2642
#
2643
# Create a one-time-only replacement for socket.socket()
2644
@functools.wraps(socket.socket)
2645
def socket_wrapper(*args, **kwargs):
2646
# Restore original function so subsequent calls are
2647
# not affected.
2648
socket.socket = self.socket_socket
2649
del self.socket_socket
2650
# This time only, return a new socket object from the
2651
# saved file descriptor.
2652
return socket.fromfd(self.socketfd, *args, **kwargs)
2653
# Replace socket.socket() function with wrapper
2654
socket.socket = socket_wrapper
2655
# The socketserver.TCPServer.__init__ will call
2656
# socket.socket(), which might be our replacement,
2657
# socket_wrapper(), if socketfd was set.
2658
1562
socketserver.TCPServer.__init__(self, server_address,
2659
1563
RequestHandlerClass)
2660
2661
1564
def server_bind(self):
2662
1565
"""This overrides the normal server_bind() function
2663
1566
to bind to an interface if one was specified, and also NOT to
2664
1567
bind to an address or port if they were not specified."""
2665
global SO_BINDTODEVICE
2666
1568
if self.interface is not None:
2667
1569
if SO_BINDTODEVICE is None:
2668
# Fall back to a hard-coded value which seems to be
2669
# common enough.
2670
log.warning("SO_BINDTODEVICE not found, trying 25")
2671
SO_BINDTODEVICE = 25
2672
try:
2673
self.socket.setsockopt(
2674
socket.SOL_SOCKET, SO_BINDTODEVICE,
2675
(self.interface + "\0").encode("utf-8"))
2676
except socket.error as error:
2677
if error.errno == errno.EPERM:
2678
log.error("No permission to bind to interface %s",
2679
self.interface)
2680
elif error.errno == errno.ENOPROTOOPT:
2681
log.error("SO_BINDTODEVICE not available; cannot"
2682
" bind to interface %s", self.interface)
2683
elif error.errno == errno.ENODEV:
2684
log.error("Interface %s does not exist, cannot"
2685
" bind", self.interface)
2686
else:
2687
raise
1570
logger.error("SO_BINDTODEVICE does not exist;"
1571
" cannot bind to interface %s",
1572
self.interface)
1573
else:
1574
try:
1575
self.socket.setsockopt(socket.SOL_SOCKET,
1576
SO_BINDTODEVICE,
1577
str(self.interface
1578
+ '\0'))
1579
except socket.error as error:
1580
if error[0] == errno.EPERM:
1581
logger.error("No permission to"
1582
" bind to interface %s",
1583
self.interface)
1584
elif error[0] == errno.ENOPROTOOPT:
1585
logger.error("SO_BINDTODEVICE not available;"
1586
" cannot bind to interface %s",
1587
self.interface)
1588
else:
1589
raise
2688
1590
# Only bind(2) the socket if we really need to.
2689
1591
if self.server_address[0] or self.server_address[1]:
2690
if self.server_address[1]:
2691
self.allow_reuse_address = True
2692
1592
if not self.server_address[0]:
2693
1593
if self.address_family == socket.AF_INET6:
2694
any_address = "::" # in6addr_any
1594
any_address = "::" # in6addr_any
2695
1595
else:
2696
any_address = "0.0.0.0" # INADDR_ANY
1596
any_address = socket.INADDR_ANY
2697
1597
self.server_address = (any_address,
2698
1598
self.server_address[1])
2699
1599
elif not self.server_address[1]:
2700
self.server_address = (self.server_address[0], 0)
1600
self.server_address = (self.server_address[0],
1601
0)
2701
1602
# if self.interface:
2702
1603
# self.server_address = (self.server_address[0],
2703
1604
# 0, # port
2709
1610
2710
1611
class MandosServer(IPv6_TCPServer):
2711
1612
"""Mandos server.
2712
1613
2713
1614
Attributes:
2714
1615
clients: set of Client objects
2715
1616
gnutls_priority GnuTLS priority string
2716
1617
use_dbus: Boolean; to emit D-Bus signals or not
2717
2718
Assumes a GLib.MainLoop event loop.
1618
1619
Assumes a gobject.MainLoop event loop.
2719
1620
"""
2720
2721
1621
def __init__(self, server_address, RequestHandlerClass,
2722
interface=None,
2723
use_ipv6=True,
2724
clients=None,
2725
gnutls_priority=None,
2726
use_dbus=True,
2727
socketfd=None):
1622
interface=None, use_ipv6=True, clients=None,
1623
gnutls_priority=None, use_dbus=True):
2728
1624
self.enabled = False
2729
1625
self.clients = clients
2730
1626
if self.clients is None:
2731
self.clients = {}
1627
self.clients = set()
2732
1628
self.use_dbus = use_dbus
2733
1629
self.gnutls_priority = gnutls_priority
2734
1630
IPv6_TCPServer.__init__(self, server_address,
2735
1631
RequestHandlerClass,
2736
interface=interface,
2737
use_ipv6=use_ipv6,
2738
socketfd=socketfd)
2739
1632
interface = interface,
1633
use_ipv6 = use_ipv6)
2740
1634
def server_activate(self):
2741
1635
if self.enabled:
2742
1636
return socketserver.TCPServer.server_activate(self)
2743
1637
2744
1638
def enable(self):
2745
1639
self.enabled = True
2746
1640
2747
1641
def add_pipe(self, parent_pipe, proc):
2748
1642
# Call "handle_ipc" for both data and EOF events
2749
GLib.io_add_watch(
2750
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2751
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2752
functools.partial(self.handle_ipc,
2753
parent_pipe=parent_pipe,
2754
proc=proc))
2755
2756
def handle_ipc(self, source, condition,
2757
parent_pipe=None,
2758
proc=None,
2759
client_object=None):
1643
gobject.io_add_watch(parent_pipe.fileno(),
1644
gobject.IO_IN | gobject.IO_HUP,
1645
functools.partial(self.handle_ipc,
1646
parent_pipe =
1647
parent_pipe,
1648
proc = proc))
1649
1650
def handle_ipc(self, source, condition, parent_pipe=None,
1651
proc = None, client_object=None):
1652
condition_names = {
1653
gobject.IO_IN: "IN", # There is data to read.
1654
gobject.IO_OUT: "OUT", # Data can be written (without
1655
# blocking).
1656
gobject.IO_PRI: "PRI", # There is urgent data to read.
1657
gobject.IO_ERR: "ERR", # Error condition.
1658
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1659
# broken, usually for pipes and
1660
# sockets).
1661
}
1662
conditions_string = ' | '.join(name
1663
for cond, name in
1664
condition_names.iteritems()
1665
if cond & condition)
2760
1666
# error, or the other end of multiprocessing.Pipe has closed
2761
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1667
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2762
1668
# Wait for other process to exit
2763
1669
proc.join()
2764
1670
return False
2765
1671
2766
1672
# Read a request from the child
2767
1673
request = parent_pipe.recv()
2768
1674
command = request[0]
2769
2770
if command == "init":
2771
key_id = request[1].decode("ascii")
2772
fpr = request[2].decode("ascii")
2773
address = request[3]
2774
2775
for c in self.clients.values():
2776
if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"
2777
"27AE41E4649B934CA495991B7852B855"):
2778
continue
2779
if key_id and c.key_id == key_id:
2780
client = c
2781
break
2782
if fpr and c.fingerprint == fpr:
1675
1676
if command == 'init':
1677
fpr = request[1]
1678
address = request[2]
1679
1680
for c in self.clients:
1681
if c.fingerprint == fpr:
2783
1682
client = c
2784
1683
break
2785
1684
else:
2786
log.info("Client not found for key ID: %s, address:"
2787
" %s", key_id or fpr, address)
1685
logger.info("Client not found for fingerprint: %s, ad"
1686
"dress: %s", fpr, address)
2788
1687
if self.use_dbus:
2789
1688
# Emit D-Bus signal
2790
mandos_dbus_service.ClientNotFound(key_id or fpr,
1689
mandos_dbus_service.ClientNotFound(fpr,
2791
1690
address[0])
2792
1691
parent_pipe.send(False)
2793
1692
return False
2794
2795
GLib.io_add_watch(
2796
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2797
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2798
functools.partial(self.handle_ipc,
2799
parent_pipe=parent_pipe,
2800
proc=proc,
2801
client_object=client))
1693
1694
gobject.io_add_watch(parent_pipe.fileno(),
1695
gobject.IO_IN | gobject.IO_HUP,
1696
functools.partial(self.handle_ipc,
1697
parent_pipe =
1698
parent_pipe,
1699
proc = proc,
1700
client_object =
1701
client))
2802
1702
parent_pipe.send(True)
2803
1703
# remove the old hook in favor of the new above hook on
2804
1704
# same fileno
2805
1705
return False
2806
if command == "funcall":
1706
if command == 'funcall':
2807
1707
funcname = request[1]
2808
1708
args = request[2]
2809
1709
kwargs = request[3]
2810
2811
parent_pipe.send(("data", getattr(client_object,
1710
1711
parent_pipe.send(('data', getattr(client_object,
2812
1712
funcname)(*args,
2813
**kwargs)))
2814
2815
if command == "getattr":
1713
**kwargs)))
1714
1715
if command == 'getattr':
2816
1716
attrname = request[1]
2817
if isinstance(client_object.__getattribute__(attrname),
2818
collections.abc.Callable):
2819
parent_pipe.send(("function", ))
1717
if callable(client_object.__getattribute__(attrname)):
1718
parent_pipe.send(('function',))
2820
1719
else:
2821
parent_pipe.send((
2822
"data", client_object.__getattribute__(attrname)))
2823
2824
if command == "setattr":
1720
parent_pipe.send(('data', client_object
1721
.__getattribute__(attrname)))
1722
1723
if command == 'setattr':
2825
1724
attrname = request[1]
2826
1725
value = request[2]
2827
1726
setattr(client_object, attrname, value)
2828
1727
2829
1728
return True
2830
1729
2831
1730
2832
def rfc3339_duration_to_delta(duration):
2833
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2834
2835
>>> timedelta = datetime.timedelta
2836
>>> rfc3339_duration_to_delta("P7D") == timedelta(7)
2837
True
2838
>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)
2839
True
2840
>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)
2841
True
2842
>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)
2843
True
2844
>>> rfc3339_duration_to_delta("P1W") == timedelta(7)
2845
True
2846
>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)
2847
True
2848
>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)
2849
True
2850
>>> del timedelta
2851
"""
2852
2853
# Parsing an RFC 3339 duration with regular expressions is not
2854
# possible - there would have to be multiple places for the same
2855
# values, like seconds. The current code, while more esoteric, is
2856
# cleaner without depending on a parsing library. If Python had a
2857
# built-in library for parsing we would use it, but we'd like to
2858
# avoid excessive use of external libraries.
2859
2860
# New type for defining tokens, syntax, and semantics all-in-one
2861
Token = collections.namedtuple("Token", (
2862
"regexp", # To match token; if "value" is not None, must have
2863
# a "group" containing digits
2864
"value", # datetime.timedelta or None
2865
"followers")) # Tokens valid after this token
2866
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2867
# the "duration" ABNF definition in RFC 3339, Appendix A.
2868
token_end = Token(re.compile(r"$"), None, frozenset())
2869
token_second = Token(re.compile(r"(\d+)S"),
2870
datetime.timedelta(seconds=1),
2871
frozenset((token_end, )))
2872
token_minute = Token(re.compile(r"(\d+)M"),
2873
datetime.timedelta(minutes=1),
2874
frozenset((token_second, token_end)))
2875
token_hour = Token(re.compile(r"(\d+)H"),
2876
datetime.timedelta(hours=1),
2877
frozenset((token_minute, token_end)))
2878
token_time = Token(re.compile(r"T"),
2879
None,
2880
frozenset((token_hour, token_minute,
2881
token_second)))
2882
token_day = Token(re.compile(r"(\d+)D"),
2883
datetime.timedelta(days=1),
2884
frozenset((token_time, token_end)))
2885
token_month = Token(re.compile(r"(\d+)M"),
2886
datetime.timedelta(weeks=4),
2887
frozenset((token_day, token_end)))
2888
token_year = Token(re.compile(r"(\d+)Y"),
2889
datetime.timedelta(weeks=52),
2890
frozenset((token_month, token_end)))
2891
token_week = Token(re.compile(r"(\d+)W"),
2892
datetime.timedelta(weeks=1),
2893
frozenset((token_end, )))
2894
token_duration = Token(re.compile(r"P"), None,
2895
frozenset((token_year, token_month,
2896
token_day, token_time,
2897
token_week)))
2898
# Define starting values:
2899
# Value so far
2900
value = datetime.timedelta()
2901
found_token = None
2902
# Following valid tokens
2903
followers = frozenset((token_duration, ))
2904
# String left to parse
2905
s = duration
2906
# Loop until end token is found
2907
while found_token is not token_end:
2908
# Search for any currently valid tokens
2909
for token in followers:
2910
match = token.regexp.match(s)
2911
if match is not None:
2912
# Token found
2913
if token.value is not None:
2914
# Value found, parse digits
2915
factor = int(match.group(1), 10)
2916
# Add to value so far
2917
value += factor * token.value
2918
# Strip token from string
2919
s = token.regexp.sub("", s, 1)
2920
# Go to found token
2921
found_token = token
2922
# Set valid next tokens
2923
followers = found_token.followers
2924
break
2925
else:
2926
# No currently valid tokens were found
2927
raise ValueError("Invalid RFC 3339 duration: {!r}"
2928
.format(duration))
2929
# End token found
2930
return value
2931
2932
2933
1731
def string_to_delta(interval):
2934
1732
"""Parse a string and return a datetime.timedelta
2935
2936
>>> string_to_delta("7d") == datetime.timedelta(7)
2937
True
2938
>>> string_to_delta("60s") == datetime.timedelta(0, 60)
2939
True
2940
>>> string_to_delta("60m") == datetime.timedelta(0, 3600)
2941
True
2942
>>> string_to_delta("24h") == datetime.timedelta(1)
2943
True
2944
>>> string_to_delta("1w") == datetime.timedelta(7)
2945
True
2946
>>> string_to_delta("5m 30s") == datetime.timedelta(0, 330)
2947
True
1733
1734
>>> string_to_delta('7d')
1735
datetime.timedelta(7)
1736
>>> string_to_delta('60s')
1737
datetime.timedelta(0, 60)
1738
>>> string_to_delta('60m')
1739
datetime.timedelta(0, 3600)
1740
>>> string_to_delta('24h')
1741
datetime.timedelta(1)
1742
>>> string_to_delta('1w')
1743
datetime.timedelta(7)
1744
>>> string_to_delta('5m 30s')
1745
datetime.timedelta(0, 330)
2948
1746
"""
2949
2950
try:
2951
return rfc3339_duration_to_delta(interval)
2952
except ValueError:
2953
pass
2954
2955
1747
timevalue = datetime.timedelta(0)
2956
1748
for s in interval.split():
2957
1749
try:
2958
suffix = s[-1]
1750
suffix = unicode(s[-1])
2959
1751
value = int(s[:-1])
2960
1752
if suffix == "d":
2961
1753
delta = datetime.timedelta(value)
2968
1760
elif suffix == "w":
2969
1761
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2970
1762
else:
2971
raise ValueError("Unknown suffix {!r}".format(suffix))
2972
except IndexError as e:
1763
raise ValueError("Unknown suffix %r" % suffix)
1764
except (ValueError, IndexError) as e:
2973
1765
raise ValueError(*(e.args))
2974
1766
timevalue += delta
2975
1767
return timevalue
2976
1768
2977
1769
2978
def daemon(nochdir=False, noclose=False):
1770
def if_nametoindex(interface):
1771
"""Call the C function if_nametoindex(), or equivalent
1772
1773
Note: This function cannot accept a unicode string."""
1774
global if_nametoindex
1775
try:
1776
if_nametoindex = (ctypes.cdll.LoadLibrary
1777
(ctypes.util.find_library("c"))
1778
.if_nametoindex)
1779
except (OSError, AttributeError):
1780
logger.warning("Doing if_nametoindex the hard way")
1781
def if_nametoindex(interface):
1782
"Get an interface index the hard way, i.e. using fcntl()"
1783
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1784
with contextlib.closing(socket.socket()) as s:
1785
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1786
struct.pack(str("16s16x"),
1787
interface))
1788
interface_index = struct.unpack(str("I"),
1789
ifreq[16:20])[0]
1790
return interface_index
1791
return if_nametoindex(interface)
1792
1793
1794
def daemon(nochdir = False, noclose = False):
2979
1795
"""See daemon(3). Standard BSD Unix function.
2980
1796
2981
1797
This should really exist as os.daemon, but it doesn't (yet)."""
2982
1798
if os.fork():
2983
1799
sys.exit()
2988
1804
sys.exit()
2989
1805
if not noclose:
2990
1806
# Close all standard open file descriptors
2991
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1807
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2992
1808
if not stat.S_ISCHR(os.fstat(null).st_mode):
2993
1809
raise OSError(errno.ENODEV,
2994
"{} not a character device"
2995
.format(os.devnull))
1810
"%s not a character device"
1811
% os.path.devnull)
2996
1812
os.dup2(null, sys.stdin.fileno())
2997
1813
os.dup2(null, sys.stdout.fileno())
2998
1814
os.dup2(null, sys.stderr.fileno())
3001
1817
3002
1818
3003
1819
def main():
3004
1820
3005
1821
##################################################################
3006
1822
# Parsing of options, both command line and config file
3007
1823
3008
1824
parser = argparse.ArgumentParser()
3009
1825
parser.add_argument("-v", "--version", action="version",
3010
version="%(prog)s {}".format(version),
1826
version = "%%(prog)s %s" % version,
3011
1827
help="show version number and exit")
3012
1828
parser.add_argument("-i", "--interface", metavar="IF",
3013
1829
help="Bind to interface IF")
3019
1835
help="Run self-test")
3020
1836
parser.add_argument("--debug", action="store_true",
3021
1837
help="Debug mode; run in foreground and log"
3022
" to terminal", default=None)
1838
" to terminal")
3023
1839
parser.add_argument("--debuglevel", metavar="LEVEL",
3024
1840
help="Debug level for stdout output")
3025
1841
parser.add_argument("--priority", help="GnuTLS"
3032
1848
" files")
3033
1849
parser.add_argument("--no-dbus", action="store_false",
3034
1850
dest="use_dbus", help="Do not provide D-Bus"
3035
" system bus interface", default=None)
1851
" system bus interface")
3036
1852
parser.add_argument("--no-ipv6", action="store_false",
3037
dest="use_ipv6", help="Do not use IPv6",
3038
default=None)
3039
parser.add_argument("--no-restore", action="store_false",
3040
dest="restore", help="Do not restore stored"
3041
" state", default=None)
3042
parser.add_argument("--socket", type=int,
3043
help="Specify a file descriptor to a network"
3044
" socket to use instead of creating one")
3045
parser.add_argument("--statedir", metavar="DIR",
3046
help="Directory to save/restore state in")
3047
parser.add_argument("--foreground", action="store_true",
3048
help="Run in foreground", default=None)
3049
parser.add_argument("--no-zeroconf", action="store_false",
3050
dest="zeroconf", help="Do not use Zeroconf",
3051
default=None)
3052
1853
dest="use_ipv6", help="Do not use IPv6")
3053
1854
options = parser.parse_args()
3054
1855
1856
if options.check:
1857
import doctest
1858
doctest.testmod()
1859
sys.exit()
1860
3055
1861
# Default values for config file for server-global settings
3056
if gnutls.has_rawpk:
3057
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3058
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3059
else:
3060
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3061
":+SIGN-DSA-SHA256")
3062
server_defaults = {"interface": "",
3063
"address": "",
3064
"port": "",
3065
"debug": "False",
3066
"priority": priority,
3067
"servicename": "Mandos",
3068
"use_dbus": "True",
3069
"use_ipv6": "True",
3070
"debuglevel": "",
3071
"restore": "True",
3072
"socket": "",
3073
"statedir": "/var/lib/mandos",
3074
"foreground": "False",
3075
"zeroconf": "True",
3076
}
3077
del priority
3078
1862
server_defaults = { "interface": "",
1863
"address": "",
1864
"port": "",
1865
"debug": "False",
1866
"priority":
1867
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1868
"servicename": "Mandos",
1869
"use_dbus": "True",
1870
"use_ipv6": "True",
1871
"debuglevel": "",
1872
}
1873
3079
1874
# Parse config file for server-global settings
3080
server_config = configparser.ConfigParser(server_defaults)
1875
server_config = configparser.SafeConfigParser(server_defaults)
3081
1876
del server_defaults
3082
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3083
# Convert the ConfigParser object to a dict
1877
server_config.read(os.path.join(options.configdir,
1878
"mandos.conf"))
1879
# Convert the SafeConfigParser object to a dict
3084
1880
server_settings = server_config.defaults()
3085
1881
# Use the appropriate methods on the non-string config options
3086
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3087
"foreground", "zeroconf"):
1882
for option in ("debug", "use_dbus", "use_ipv6"):
3088
1883
server_settings[option] = server_config.getboolean("DEFAULT",
3089
1884
option)
3090
1885
if server_settings["port"]:
3091
1886
server_settings["port"] = server_config.getint("DEFAULT",
3092
1887
"port")
3093
if server_settings["socket"]:
3094
server_settings["socket"] = server_config.getint("DEFAULT",
3095
"socket")
3096
# Later, stdin will, and stdout and stderr might, be dup'ed
3097
# over with an opened os.devnull. But we don't want this to
3098
# happen with a supplied network socket.
3099
if 0 <= server_settings["socket"] <= 2:
3100
server_settings["socket"] = os.dup(server_settings
3101
["socket"])
3102
1888
del server_config
3103
1889
3104
1890
# Override the settings from the config file with command line
3105
1891
# options, if set.
3106
1892
for option in ("interface", "address", "port", "debug",
3107
"priority", "servicename", "configdir", "use_dbus",
3108
"use_ipv6", "debuglevel", "restore", "statedir",
3109
"socket", "foreground", "zeroconf"):
1893
"priority", "servicename", "configdir",
1894
"use_dbus", "use_ipv6", "debuglevel"):
3110
1895
value = getattr(options, option)
3111
1896
if value is not None:
3112
1897
server_settings[option] = value
3113
1898
del options
3114
1899
# Force all strings to be unicode
3115
1900
for option in server_settings.keys():
3116
if isinstance(server_settings[option], bytes):
3117
server_settings[option] = (server_settings[option]
3118
.decode("utf-8"))
3119
# Force all boolean options to be boolean
3120
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3121
"foreground", "zeroconf"):
3122
server_settings[option] = bool(server_settings[option])
3123
# Debug implies foreground
3124
if server_settings["debug"]:
3125
server_settings["foreground"] = True
1901
if type(server_settings[option]) is str:
1902
server_settings[option] = unicode(server_settings[option])
3126
1903
# Now we have our good server settings in "server_settings"
3127
1904
3128
1905
##################################################################
3129
3130
if (not server_settings["zeroconf"]
3131
and not (server_settings["port"]
3132
or server_settings["socket"] != "")):
3133
parser.error("Needs port or socket to work without Zeroconf")
3134
1906
3135
1907
# For convenience
3136
1908
debug = server_settings["debug"]
3137
1909
debuglevel = server_settings["debuglevel"]
3138
1910
use_dbus = server_settings["use_dbus"]
3139
1911
use_ipv6 = server_settings["use_ipv6"]
3140
stored_state_path = os.path.join(server_settings["statedir"],
3141
stored_state_file)
3142
foreground = server_settings["foreground"]
3143
zeroconf = server_settings["zeroconf"]
3144
3145
if debug:
3146
initlogger(debug, logging.DEBUG)
3147
else:
3148
if not debuglevel:
3149
initlogger(debug)
3150
else:
3151
level = getattr(logging, debuglevel.upper())
3152
initlogger(debug, level)
3153
1912
3154
1913
if server_settings["servicename"] != "Mandos":
3155
syslogger.setFormatter(
3156
logging.Formatter("Mandos ({}) [%(process)d]:"
3157
" %(levelname)s: %(message)s".format(
3158
server_settings["servicename"])))
3159
1914
syslogger.setFormatter(logging.Formatter
1915
('Mandos (%s) [%%(process)d]:'
1916
' %%(levelname)s: %%(message)s'
1917
% server_settings["servicename"]))
1918
3160
1919
# Parse config file with clients
3161
client_config = configparser.ConfigParser(Client.client_defaults)
1920
client_defaults = { "timeout": "5m",
1921
"extended_timeout": "15m",
1922
"interval": "2m",
1923
"checker": "fping -q -- %%(host)s",
1924
"host": "",
1925
"approval_delay": "0s",
1926
"approval_duration": "1s",
1927
}
1928
client_config = configparser.SafeConfigParser(client_defaults)
3162
1929
client_config.read(os.path.join(server_settings["configdir"],
3163
1930
"clients.conf"))
3164
1931
3165
1932
global mandos_dbus_service
3166
1933
mandos_dbus_service = None
3167
3168
socketfd = None
3169
if server_settings["socket"] != "":
3170
socketfd = server_settings["socket"]
3171
tcp_server = MandosServer(
3172
(server_settings["address"], server_settings["port"]),
3173
ClientHandler,
3174
interface=(server_settings["interface"] or None),
3175
use_ipv6=use_ipv6,
3176
gnutls_priority=server_settings["priority"],
3177
use_dbus=use_dbus,
3178
socketfd=socketfd)
3179
if not foreground:
3180
pidfilename = "/run/mandos.pid"
3181
if not os.path.isdir("/run/."):
3182
pidfilename = "/var/run/mandos.pid"
3183
pidfile = None
3184
try:
3185
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3186
except IOError as e:
3187
log.error("Could not open file %r", pidfilename,
3188
exc_info=e)
3189
3190
for name, group in (("_mandos", "_mandos"),
3191
("mandos", "mandos"),
3192
("nobody", "nogroup")):
3193
try:
3194
uid = pwd.getpwnam(name).pw_uid
3195
gid = pwd.getpwnam(group).pw_gid
3196
break
1934
1935
tcp_server = MandosServer((server_settings["address"],
1936
server_settings["port"]),
1937
ClientHandler,
1938
interface=(server_settings["interface"]
1939
or None),
1940
use_ipv6=use_ipv6,
1941
gnutls_priority=
1942
server_settings["priority"],
1943
use_dbus=use_dbus)
1944
if not debug:
1945
pidfilename = "/var/run/mandos.pid"
1946
try:
1947
pidfile = open(pidfilename, "w")
1948
except IOError:
1949
logger.error("Could not open file %r", pidfilename)
1950
1951
try:
1952
uid = pwd.getpwnam("_mandos").pw_uid
1953
gid = pwd.getpwnam("_mandos").pw_gid
1954
except KeyError:
1955
try:
1956
uid = pwd.getpwnam("mandos").pw_uid
1957
gid = pwd.getpwnam("mandos").pw_gid
3197
1958
except KeyError:
3198
continue
3199
else:
3200
uid = 65534
3201
gid = 65534
1959
try:
1960
uid = pwd.getpwnam("nobody").pw_uid
1961
gid = pwd.getpwnam("nobody").pw_gid
1962
except KeyError:
1963
uid = 65534
1964
gid = 65534
3202
1965
try:
3203
1966
os.setgid(gid)
3204
1967
os.setuid(uid)
3205
log.debug("Did setuid/setgid to %s:%s", uid, gid)
3206
1968
except OSError as error:
3207
log.warning("Failed to setuid/setgid to %s:%s: %s", uid, gid,
3208
os.strerror(error.errno))
3209
if error.errno != errno.EPERM:
3210
raise
3211
1969
if error[0] != errno.EPERM:
1970
raise error
1971
1972
if not debug and not debuglevel:
1973
syslogger.setLevel(logging.WARNING)
1974
console.setLevel(logging.WARNING)
1975
if debuglevel:
1976
level = getattr(logging, debuglevel.upper())
1977
syslogger.setLevel(level)
1978
console.setLevel(level)
1979
3212
1980
if debug:
3213
1981
# Enable all possible GnuTLS debugging
3214
1982
3215
1983
# "Use a log level over 10 to enable all debugging options."
3216
1984
# - GnuTLS manual
3217
gnutls.global_set_log_level(11)
3218
3219
@gnutls.log_func
1985
gnutls.library.functions.gnutls_global_set_log_level(11)
1986
1987
@gnutls.library.types.gnutls_log_func
3220
1988
def debug_gnutls(level, string):
3221
log.debug("GnuTLS: %s",
3222
string[:-1].decode("utf-8", errors="replace"))
3223
3224
gnutls.global_set_log_function(debug_gnutls)
3225
1989
logger.debug("GnuTLS: %s", string[:-1])
1990
1991
(gnutls.library.functions
1992
.gnutls_global_set_log_function(debug_gnutls))
1993
3226
1994
# Redirect stdin so all checkers get /dev/null
3227
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1995
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3228
1996
os.dup2(null, sys.stdin.fileno())
3229
1997
if null > 2:
3230
1998
os.close(null)
3231
1999
else:
2000
# No console logging
2001
logger.removeHandler(console)
2002
3232
2003
# Need to fork before connecting to D-Bus
3233
if not foreground:
2004
if not debug:
3234
2005
# Close all input and output, do double fork, etc.
3235
2006
daemon()
3236
3237
if gi.version_info < (3, 10, 2):
3238
# multiprocessing will use threads, so before we use GLib we
3239
# need to inform GLib that threads will be used.
3240
GLib.threads_init()
3241
2007
3242
2008
global main_loop
3243
2009
# From the Avahi example code
3244
DBusGMainLoop(set_as_default=True)
3245
main_loop = GLib.MainLoop()
2010
DBusGMainLoop(set_as_default=True )
2011
main_loop = gobject.MainLoop()
3246
2012
bus = dbus.SystemBus()
3247
2013
# End of Avahi example code
3248
2014
if use_dbus:
3249
2015
try:
3250
2016
bus_name = dbus.service.BusName("se.recompile.Mandos",
3251
bus,
3252
do_not_queue=True)
3253
old_bus_name = dbus.service.BusName(
3254
"se.bsnet.fukt.Mandos", bus,
3255
do_not_queue=True)
3256
except dbus.exceptions.DBusException as e:
3257
log.error("Disabling D-Bus:", exc_info=e)
2017
bus, do_not_queue=True)
2018
old_bus_name = (dbus.service.BusName
2019
("se.bsnet.fukt.Mandos", bus,
2020
do_not_queue=True))
2021
except dbus.exceptions.NameExistsException as e:
2022
logger.error(unicode(e) + ", disabling D-Bus")
3258
2023
use_dbus = False
3259
2024
server_settings["use_dbus"] = False
3260
2025
tcp_server.use_dbus = False
3261
if zeroconf:
3262
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3263
service = AvahiServiceToSyslog(
3264
name=server_settings["servicename"],
3265
servicetype="_mandos._tcp",
3266
protocol=protocol,
3267
bus=bus)
3268
if server_settings["interface"]:
3269
service.interface = if_nametoindex(
3270
server_settings["interface"].encode("utf-8"))
3271
2026
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2027
service = AvahiService(name = server_settings["servicename"],
2028
servicetype = "_mandos._tcp",
2029
protocol = protocol, bus = bus)
2030
if server_settings["interface"]:
2031
service.interface = (if_nametoindex
2032
(str(server_settings["interface"])))
2033
3272
2034
global multiprocessing_manager
3273
2035
multiprocessing_manager = multiprocessing.Manager()
3274
2036
3275
2037
client_class = Client
3276
2038
if use_dbus:
3277
client_class = functools.partial(ClientDBus, bus=bus)
3278
3279
client_settings = Client.config_parser(client_config)
3280
old_client_settings = {}
3281
clients_data = {}
3282
3283
# This is used to redirect stdout and stderr for checker processes
3284
global wnull
3285
wnull = open(os.devnull, "w") # A writable /dev/null
3286
# Only used if server is running in foreground but not in debug
3287
# mode
3288
if debug or not foreground:
3289
wnull.close()
3290
3291
# Get client data and settings from last running state.
3292
if server_settings["restore"]:
3293
try:
3294
with open(stored_state_path, "rb") as stored_state:
3295
if sys.version_info.major == 2:
3296
clients_data, old_client_settings = pickle.load(
3297
stored_state)
3298
else:
3299
bytes_clients_data, bytes_old_client_settings = (
3300
pickle.load(stored_state, encoding="bytes"))
3301
# Fix bytes to strings
3302
# clients_data
3303
# .keys()
3304
clients_data = {(key.decode("utf-8")
3305
if isinstance(key, bytes)
3306
else key): value
3307
for key, value in
3308
bytes_clients_data.items()}
3309
del bytes_clients_data
3310
for key in clients_data:
3311
value = {(k.decode("utf-8")
3312
if isinstance(k, bytes) else k): v
3313
for k, v in
3314
clients_data[key].items()}
3315
clients_data[key] = value
3316
# .client_structure
3317
value["client_structure"] = [
3318
(s.decode("utf-8")
3319
if isinstance(s, bytes)
3320
else s) for s in
3321
value["client_structure"]]
3322
# .name, .host, and .checker_command
3323
for k in ("name", "host", "checker_command"):
3324
if isinstance(value[k], bytes):
3325
value[k] = value[k].decode("utf-8")
3326
if "key_id" not in value:
3327
value["key_id"] = ""
3328
elif "fingerprint" not in value:
3329
value["fingerprint"] = ""
3330
# old_client_settings
3331
# .keys()
3332
old_client_settings = {
3333
(key.decode("utf-8")
3334
if isinstance(key, bytes)
3335
else key): value
3336
for key, value in
3337
bytes_old_client_settings.items()}
3338
del bytes_old_client_settings
3339
# .host and .checker_command
3340
for value in old_client_settings.values():
3341
for attribute in ("host", "checker_command"):
3342
if isinstance(value[attribute], bytes):
3343
value[attribute] = (value[attribute]
3344
.decode("utf-8"))
3345
os.remove(stored_state_path)
3346
except IOError as e:
3347
if e.errno == errno.ENOENT:
3348
log.warning("Could not load persistent state:"
3349
" %s", os.strerror(e.errno))
3350
else:
3351
log.critical("Could not load persistent state:",
3352
exc_info=e)
3353
raise
3354
except EOFError as e:
3355
log.warning("Could not load persistent state: EOFError:",
3356
exc_info=e)
3357
3358
with PGPEngine() as pgp:
3359
for client_name, client in clients_data.items():
3360
# Skip removed clients
3361
if client_name not in client_settings:
3362
continue
3363
3364
# Decide which value to use after restoring saved state.
3365
# We have three different values: Old config file,
3366
# new config file, and saved state.
3367
# New config value takes precedence if it differs from old
3368
# config value, otherwise use saved state.
3369
for name, value in client_settings[client_name].items():
3370
try:
3371
# For each value in new config, check if it
3372
# differs from the old config value (Except for
3373
# the "secret" attribute)
3374
if (name != "secret"
3375
and (value !=
3376
old_client_settings[client_name][name])):
3377
client[name] = value
3378
except KeyError:
3379
pass
3380
3381
# Clients who has passed its expire date can still be
3382
# enabled if its last checker was successful. A Client
3383
# whose checker succeeded before we stored its state is
3384
# assumed to have successfully run all checkers during
3385
# downtime.
3386
if client["enabled"]:
3387
if datetime.datetime.utcnow() >= client["expires"]:
3388
if not client["last_checked_ok"]:
3389
log.warning("disabling client %s - Client"
3390
" never performed a successful"
3391
" checker", client_name)
3392
client["enabled"] = False
3393
elif client["last_checker_status"] != 0:
3394
log.warning("disabling client %s - Client"
3395
" last checker failed with error"
3396
" code %s", client_name,
3397
client["last_checker_status"])
3398
client["enabled"] = False
3399
else:
3400
client["expires"] = (
3401
datetime.datetime.utcnow()
3402
+ client["timeout"])
3403
log.debug("Last checker succeeded, keeping %s"
3404
" enabled", client_name)
2039
client_class = functools.partial(ClientDBusTransitional,
2040
bus = bus)
2041
def client_config_items(config, section):
2042
special_settings = {
2043
"approved_by_default":
2044
lambda: config.getboolean(section,
2045
"approved_by_default"),
2046
}
2047
for name, value in config.items(section):
3405
2048
try:
3406
client["secret"] = pgp.decrypt(
3407
client["encrypted_secret"],
3408
client_settings[client_name]["secret"])
3409
except PGPError:
3410
# If decryption fails, we use secret from new settings
3411
log.debug("Failed to decrypt %s old secret",
3412
client_name)
3413
client["secret"] = (client_settings[client_name]
3414
["secret"])
3415
3416
# Add/remove clients based on new changes made to config
3417
for client_name in (set(old_client_settings)
3418
- set(client_settings)):
3419
del clients_data[client_name]
3420
for client_name in (set(client_settings)
3421
- set(old_client_settings)):
3422
clients_data[client_name] = client_settings[client_name]
3423
3424
# Create all client objects
3425
for client_name, client in clients_data.items():
3426
tcp_server.clients[client_name] = client_class(
3427
name=client_name,
3428
settings=client,
3429
server_settings=server_settings)
3430
2049
yield (name, special_settings[name]())
2050
except KeyError:
2051
yield (name, value)
2052
2053
tcp_server.clients.update(set(
2054
client_class(name = section,
2055
config= dict(client_config_items(
2056
client_config, section)))
2057
for section in client_config.sections()))
3431
2058
if not tcp_server.clients:
3432
log.warning("No clients defined")
3433
3434
if not foreground:
3435
if pidfile is not None:
3436
pid = os.getpid()
3437
try:
3438
with pidfile:
3439
print(pid, file=pidfile)
3440
except IOError:
3441
log.error("Could not write to file %r with PID %d",
3442
pidfilename, pid)
3443
del pidfile
2059
logger.warning("No clients defined")
2060
2061
if not debug:
2062
try:
2063
with pidfile:
2064
pid = os.getpid()
2065
pidfile.write(str(pid) + "\n".encode("utf-8"))
2066
del pidfile
2067
except IOError:
2068
logger.error("Could not write to file %r with PID %d",
2069
pidfilename, pid)
2070
except NameError:
2071
# "pidfile" was never created
2072
pass
3444
2073
del pidfilename
3445
3446
for termsig in (signal.SIGHUP, signal.SIGTERM):
3447
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3448
lambda: main_loop.quit() and False)
3449
2074
2075
signal.signal(signal.SIGINT, signal.SIG_IGN)
2076
2077
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2078
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2079
3450
2080
if use_dbus:
3451
3452
@alternate_dbus_interfaces(
3453
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3454
class MandosDBusService(DBusObjectWithObjectManager):
2081
class MandosDBusService(dbus.service.Object):
3455
2082
"""A D-Bus proxy object"""
3456
3457
2083
def __init__(self):
3458
2084
dbus.service.Object.__init__(self, bus, "/")
3459
3460
2085
_interface = "se.recompile.Mandos"
3461
2086
3462
2087
@dbus.service.signal(_interface, signature="o")
3463
2088
def ClientAdded(self, objpath):
3464
2089
"D-Bus signal"
3465
2090
pass
3466
2091
3467
2092
@dbus.service.signal(_interface, signature="ss")
3468
def ClientNotFound(self, key_id, address):
2093
def ClientNotFound(self, fingerprint, address):
3469
2094
"D-Bus signal"
3470
2095
pass
3471
3472
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3473
"true"})
2096
3474
2097
@dbus.service.signal(_interface, signature="os")
3475
2098
def ClientRemoved(self, objpath, name):
3476
2099
"D-Bus signal"
3477
2100
pass
3478
3479
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3480
"true"})
2101
3481
2102
@dbus.service.method(_interface, out_signature="ao")
3482
2103
def GetAllClients(self):
3483
2104
"D-Bus method"
3484
return dbus.Array(c.dbus_object_path for c in
3485
tcp_server.clients.values())
3486
3487
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3488
"true"})
2105
return dbus.Array(c.dbus_object_path
2106
for c in tcp_server.clients)
2107
3489
2108
@dbus.service.method(_interface,
3490
2109
out_signature="a{oa{sv}}")
3491
2110
def GetAllClientsWithProperties(self):
3492
2111
"D-Bus method"
3493
2112
return dbus.Dictionary(
3494
{c.dbus_object_path: c.GetAll(
3495
"se.recompile.Mandos.Client")
3496
for c in tcp_server.clients.values()},
2113
((c.dbus_object_path, c.GetAll(""))
2114
for c in tcp_server.clients),
3497
2115
signature="oa{sv}")
3498
2116
3499
2117
@dbus.service.method(_interface, in_signature="o")
3500
2118
def RemoveClient(self, object_path):
3501
2119
"D-Bus method"
3502
for c in tcp_server.clients.values():
2120
for c in tcp_server.clients:
3503
2121
if c.dbus_object_path == object_path:
3504
del tcp_server.clients[c.name]
2122
tcp_server.clients.remove(c)
3505
2123
c.remove_from_connection()
3506
# Don't signal the disabling
2124
# Don't signal anything except ClientRemoved
3507
2125
c.disable(quiet=True)
3508
# Emit D-Bus signal for removal
3509
self.client_removed_signal(c)
2126
# Emit D-Bus signal
2127
self.ClientRemoved(object_path, c.name)
3510
2128
return
3511
2129
raise KeyError(object_path)
3512
2130
3513
2131
del _interface
3514
3515
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3516
out_signature="a{oa{sa{sv}}}")
3517
def GetManagedObjects(self):
3518
"""D-Bus method"""
3519
return dbus.Dictionary(
3520
{client.dbus_object_path:
3521
dbus.Dictionary(
3522
{interface: client.GetAll(interface)
3523
for interface in
3524
client._get_all_interface_names()})
3525
for client in tcp_server.clients.values()})
3526
3527
def client_added_signal(self, client):
3528
"""Send the new standard signal and the old signal"""
3529
if use_dbus:
3530
# New standard signal
3531
self.InterfacesAdded(
3532
client.dbus_object_path,
3533
dbus.Dictionary(
3534
{interface: client.GetAll(interface)
3535
for interface in
3536
client._get_all_interface_names()}))
3537
# Old signal
3538
self.ClientAdded(client.dbus_object_path)
3539
3540
def client_removed_signal(self, client):
3541
"""Send the new standard signal and the old signal"""
3542
if use_dbus:
3543
# New standard signal
3544
self.InterfacesRemoved(
3545
client.dbus_object_path,
3546
client._get_all_interface_names())
3547
# Old signal
3548
self.ClientRemoved(client.dbus_object_path,
3549
client.name)
3550
3551
mandos_dbus_service = MandosDBusService()
3552
3553
# Save modules to variables to exempt the modules from being
3554
# unloaded before the function registered with atexit() is run.
3555
mp = multiprocessing
3556
wn = wnull
3557
2132
2133
class MandosDBusServiceTransitional(MandosDBusService):
2134
__metaclass__ = AlternateDBusNamesMetaclass
2135
mandos_dbus_service = MandosDBusServiceTransitional()
2136
3558
2137
def cleanup():
3559
2138
"Cleanup function; run on exit"
3560
if zeroconf:
3561
service.cleanup()
3562
3563
mp.active_children()
3564
wn.close()
3565
if not (tcp_server.clients or client_settings):
3566
return
3567
3568
# Store client before exiting. Secrets are encrypted with key
3569
# based on what config file has. If config file is
3570
# removed/edited, old secret will thus be unrecovable.
3571
clients = {}
3572
with PGPEngine() as pgp:
3573
for client in tcp_server.clients.values():
3574
key = client_settings[client.name]["secret"]
3575
client.encrypted_secret = pgp.encrypt(client.secret,
3576
key)
3577
client_dict = {}
3578
3579
# A list of attributes that can not be pickled
3580
# + secret.
3581
exclude = {"bus", "changedstate", "secret",
3582
"checker", "server_settings"}
3583
for name, typ in inspect.getmembers(dbus.service
3584
.Object):
3585
exclude.add(name)
3586
3587
client_dict["encrypted_secret"] = (client
3588
.encrypted_secret)
3589
for attr in client.client_structure:
3590
if attr not in exclude:
3591
client_dict[attr] = getattr(client, attr)
3592
3593
clients[client.name] = client_dict
3594
del client_settings[client.name]["secret"]
3595
3596
try:
3597
with tempfile.NamedTemporaryFile(
3598
mode="wb",
3599
suffix=".pickle",
3600
prefix="clients-",
3601
dir=os.path.dirname(stored_state_path),
3602
delete=False) as stored_state:
3603
pickle.dump((clients, client_settings), stored_state,
3604
protocol=2)
3605
tempname = stored_state.name
3606
os.rename(tempname, stored_state_path)
3607
except (IOError, OSError) as e:
3608
if not debug:
3609
try:
3610
os.remove(tempname)
3611
except NameError:
3612
pass
3613
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3614
log.warning("Could not save persistent state: %s",
3615
os.strerror(e.errno))
3616
else:
3617
log.warning("Could not save persistent state:",
3618
exc_info=e)
3619
raise
3620
3621
# Delete all clients, and settings from config
2139
service.cleanup()
2140
2141
multiprocessing.active_children()
3622
2142
while tcp_server.clients:
3623
name, client = tcp_server.clients.popitem()
2143
client = tcp_server.clients.pop()
3624
2144
if use_dbus:
3625
2145
client.remove_from_connection()
3626
# Don't signal the disabling
2146
client.disable_hook = None
2147
# Don't signal anything except ClientRemoved
3627
2148
client.disable(quiet=True)
3628
# Emit D-Bus signal for removal
3629
2149
if use_dbus:
3630
mandos_dbus_service.client_removed_signal(client)
3631
client_settings.clear()
3632
2150
# Emit D-Bus signal
2151
mandos_dbus_service.ClientRemoved(client
2152
.dbus_object_path,
2153
client.name)
2154
3633
2155
atexit.register(cleanup)
3634
3635
for client in tcp_server.clients.values():
2156
2157
for client in tcp_server.clients:
3636
2158
if use_dbus:
3637
# Emit D-Bus signal for adding
3638
mandos_dbus_service.client_added_signal(client)
3639
# Need to initiate checking of clients
3640
if client.enabled:
3641
client.init_checker(randomize_start=True)
3642
2159
# Emit D-Bus signal
2160
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2161
client.enable()
2162
3643
2163
tcp_server.enable()
3644
2164
tcp_server.server_activate()
3645
2165
3646
2166
# Find out what port we got
3647
if zeroconf:
3648
service.port = tcp_server.socket.getsockname()[1]
2167
service.port = tcp_server.socket.getsockname()[1]
3649
2168
if use_ipv6:
3650
log.info("Now listening on address %r, port %d, flowinfo %d,"
3651
" scope_id %d", *tcp_server.socket.getsockname())
2169
logger.info("Now listening on address %r, port %d,"
2170
" flowinfo %d, scope_id %d"
2171
% tcp_server.socket.getsockname())
3652
2172
else: # IPv4
3653
log.info("Now listening on address %r, port %d",
3654
*tcp_server.socket.getsockname())
3655
3656
# service.interface = tcp_server.socket.getsockname()[3]
3657
2173
logger.info("Now listening on address %r, port %d"
2174
% tcp_server.socket.getsockname())
2175
2176
#service.interface = tcp_server.socket.getsockname()[3]
2177
3658
2178
try:
3659
if zeroconf:
3660
# From the Avahi example code
3661
try:
3662
service.activate()
3663
except dbus.exceptions.DBusException as error:
3664
log.critical("D-Bus Exception", exc_info=error)
3665
cleanup()
3666
sys.exit(1)
3667
# End of Avahi example code
3668
3669
GLib.io_add_watch(
3670
GLib.IOChannel.unix_new(tcp_server.fileno()),
3671
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3672
lambda *args, **kwargs: (tcp_server.handle_request
3673
(*args[2:], **kwargs) or True))
3674
3675
log.debug("Starting main loop")
2179
# From the Avahi example code
2180
try:
2181
service.activate()
2182
except dbus.exceptions.DBusException as error:
2183
logger.critical("DBusException: %s", error)
2184
cleanup()
2185
sys.exit(1)
2186
# End of Avahi example code
2187
2188
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2189
lambda *args, **kwargs:
2190
(tcp_server.handle_request
2191
(*args[2:], **kwargs) or True))
2192
2193
logger.debug("Starting main loop")
3676
2194
main_loop.run()
3677
2195
except AvahiError as error:
3678
log.critical("Avahi Error", exc_info=error)
2196
logger.critical("AvahiError: %s", error)
3679
2197
cleanup()
3680
2198
sys.exit(1)
3681
2199
except KeyboardInterrupt:
3682
2200
if debug:
3683
2201
print("", file=sys.stderr)
3684
log.debug("Server received KeyboardInterrupt")
3685
log.debug("Server exiting")
2202
logger.debug("Server received KeyboardInterrupt")
2203
logger.debug("Server exiting")
3686
2204
# Must run before the D-Bus bus name gets deregistered
3687
2205
cleanup()
3688
2206
3689
3690
def parse_test_args():
3691
# type: () -> argparse.Namespace
3692
parser = argparse.ArgumentParser(add_help=False)
3693
parser.add_argument("--check", action="store_true")
3694
parser.add_argument("--prefix", )
3695
args, unknown_args = parser.parse_known_args()
3696
if args.check:
3697
# Remove test options from sys.argv
3698
sys.argv[1:] = unknown_args
3699
return args
3700
3701
# Add all tests from doctest strings
3702
def load_tests(loader, tests, none):
3703
import doctest
3704
tests.addTests(doctest.DocTestSuite())
3705
return tests
3706
3707
if __name__ == "__main__":
3708
options = parse_test_args()
3709
try:
3710
if options.check:
3711
extra_test_prefix = options.prefix
3712
if extra_test_prefix is not None:
3713
if not (unittest.main(argv=[""], exit=False)
3714
.result.wasSuccessful()):
3715
sys.exit(1)
3716
class ExtraTestLoader(unittest.TestLoader):
3717
testMethodPrefix = extra_test_prefix
3718
# Call using ./scriptname --test [--verbose]
3719
unittest.main(argv=[""], testLoader=ExtraTestLoader())
3720
else:
3721
unittest.main(argv=[""])
3722
else:
3723
main()
3724
finally:
3725
logging.shutdown()
3726
3727
# Local Variables:
3728
# run-tests:
3729
# (lambda (&optional extra)
3730
# (if (not (funcall run-tests-in-test-buffer default-directory
3731
# extra))
3732
# (funcall show-test-buffer-in-test-window)
3733
# (funcall remove-test-window)
3734
# (if extra (message "Extra tests run successfully!"))))
3735
# run-tests-in-test-buffer:
3736
# (lambda (dir &optional extra)
3737
# (with-current-buffer (get-buffer-create "*Test*")
3738
# (setq buffer-read-only nil
3739
# default-directory dir)
3740
# (erase-buffer)
3741
# (compilation-mode))
3742
# (let ((process-result
3743
# (let ((inhibit-read-only t))
3744
# (process-file-shell-command
3745
# (funcall get-command-line extra) nil "*Test*"))))
3746
# (and (numberp process-result)
3747
# (= process-result 0))))
3748
# get-command-line:
3749
# (lambda (&optional extra)
3750
# (let ((quoted-script
3751
# (shell-quote-argument (funcall get-script-name))))
3752
# (format
3753
# (concat "%s --check" (if extra " --prefix=atest" ""))
3754
# quoted-script)))
3755
# get-script-name:
3756
# (lambda ()
3757
# (if (fboundp 'file-local-name)
3758
# (file-local-name (buffer-file-name))
3759
# (or (file-remote-p (buffer-file-name) 'localname)
3760
# (buffer-file-name))))
3761
# remove-test-window:
3762
# (lambda ()
3763
# (let ((test-window (get-buffer-window "*Test*")))
3764
# (if test-window (delete-window test-window))))
3765
# show-test-buffer-in-test-window:
3766
# (lambda ()
3767
# (when (not (get-buffer-window-list "*Test*"))
3768
# (setq next-error-last-buffer (get-buffer "*Test*"))
3769
# (let* ((side (if (>= (window-width) 146) 'right 'bottom))
3770
# (display-buffer-overriding-action
3771
# `((display-buffer-in-side-window) (side . ,side)
3772
# (window-height . fit-window-to-buffer)
3773
# (window-width . fit-window-to-buffer))))
3774
# (display-buffer "*Test*"))))
3775
# eval:
3776
# (progn
3777
# (let* ((run-extra-tests (lambda () (interactive)
3778
# (funcall run-tests t)))
3779
# (inner-keymap `(keymap (116 . ,run-extra-tests))) ; t
3780
# (outer-keymap `(keymap (3 . ,inner-keymap)))) ; C-c
3781
# (setq minor-mode-overriding-map-alist
3782
# (cons `(run-tests . ,outer-keymap)
3783
# minor-mode-overriding-map-alist)))
3784
# (add-hook 'after-save-hook run-tests 90 t))
3785
# End:
2207
2208
if __name__ == '__main__':
2209
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0