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- Committer: Teddy Hogeborn
- Date: 2024-09-10 17:27:47 UTC
- Revision ID: teddy@recompile.se-20240910172747-lb81r7e888dwb8ak
Only use linker option --no-warn-execstack if supported
The --no-warn-execstack is new in ld(1) version 2.39; only use the
option if the linker supports it.
* Makefile: Only add "-Xlinker --no-warn-execstack" to LDFLAGS for
various programs if we can successfully run a compiler with that
linker flag.
The --no-warn-execstack is new in ld(1) version 2.39; only use the
option if the linker supports it.
* Makefile: Only add "-Xlinker --no-warn-execstack" to LDFLAGS for
various programs if we can successfully run a compiler with that
linker flag.
- files added:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- network-hooks.d
- plugin-helpers
- files removed:
- initramfs-tools-hook-conf
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python
2
# -*- mode: python; coding: utf-8 -*-
3
#
1
#!/usr/bin/python3 -bI
2
# -*- coding: utf-8; lexical-binding: t -*-
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2022 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
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
31
32
# Contact the authors at <mandos@recompile.se>.
32
#
33
33
#
34
34
from __future__ import (division, absolute_import, print_function,
35
35
unicode_literals)
36
36
37
import SocketServer as socketserver
37
try:
38
from future_builtins import *
39
except ImportError:
40
pass
41
42
import sys
43
import unittest
44
import argparse
45
import logging
46
import os
47
try:
48
import SocketServer as socketserver
49
except ImportError:
50
import socketserver
38
51
import socket
39
import argparse
40
52
import datetime
41
53
import errno
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
49
import sys
54
try:
55
import ConfigParser as configparser
56
except ImportError:
57
import configparser
50
58
import re
51
import os
52
59
import signal
53
60
import subprocess
54
61
import atexit
55
62
import stat
56
import logging
57
63
import logging.handlers
58
64
import pwd
59
65
import contextlib
60
66
import struct
61
67
import fcntl
62
68
import functools
63
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
64
73
import multiprocessing
65
74
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
80
import random
81
import shlex
66
82
67
83
import dbus
68
84
import dbus.service
69
import gobject
70
import avahi
85
import gi
86
from gi.repository import GLib
71
87
from dbus.mainloop.glib import DBusGMainLoop
72
88
import ctypes
73
89
import ctypes.util
74
90
import xml.dom.minidom
75
91
import inspect
76
92
77
try:
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:
78
122
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
79
123
except AttributeError:
80
124
try:
125
# This is where SO_BINDTODEVICE was up to and including Python
126
# 2.6, and also 3.2:
81
127
from IN import SO_BINDTODEVICE
82
128
except ImportError:
83
SO_BINDTODEVICE = None
84
85
86
version = "1.3.1"
87
88
#logger = logging.getLogger('mandos')
89
logger = logging.Logger('mandos')
90
syslogger = (logging.handlers.SysLogHandler
91
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
92
address = str("/dev/log")))
93
syslogger.setFormatter(logging.Formatter
94
('Mandos [%(process)d]: %(levelname)s:'
95
' %(message)s'))
96
logger.addHandler(syslogger)
97
98
console = logging.StreamHandler()
99
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
100
' %(levelname)s:'
101
' %(message)s'))
102
logger.addHandler(console)
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
103
331
104
332
class AvahiError(Exception):
105
333
def __init__(self, value, *args, **kwargs):
106
334
self.value = value
107
super(AvahiError, self).__init__(value, *args, **kwargs)
108
def __unicode__(self):
109
return unicode(repr(self.value))
335
return super(AvahiError, self).__init__(value, *args,
336
**kwargs)
337
110
338
111
339
class AvahiServiceError(AvahiError):
112
340
pass
113
341
342
114
343
class AvahiGroupError(AvahiError):
115
344
pass
116
345
117
346
118
class AvahiService(object):
347
class AvahiService:
119
348
"""An Avahi (Zeroconf) service.
120
349
121
350
Attributes:
122
351
interface: integer; avahi.IF_UNSPEC or an interface index.
123
352
Used to optionally bind to the specified interface.
124
name: string; Example: 'Mandos'
125
type: string; Example: '_mandos._tcp'.
126
See <http://www.dns-sd.org/ServiceTypes.html>
353
name: string; Example: "Mandos"
354
type: string; Example: "_mandos._tcp".
355
See <https://www.iana.org/assignments/service-names-port-numbers>
127
356
port: integer; what port to announce
128
357
TXT: list of strings; TXT record for the service
129
358
domain: string; Domain to publish on, default to .local if empty.
135
364
server: D-Bus Server
136
365
bus: dbus.SystemBus()
137
366
"""
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):
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):
142
379
self.interface = interface
143
380
self.name = name
144
381
self.type = servicetype
153
390
self.server = None
154
391
self.bus = bus
155
392
self.entry_group_state_changed_match = None
156
def rename(self):
393
394
def rename(self, remove=True):
157
395
"""Derived from the Avahi example code"""
158
396
if self.rename_count >= self.max_renames:
159
logger.critical("No suitable Zeroconf service name found"
160
" after %i retries, exiting.",
161
self.rename_count)
397
log.critical("No suitable Zeroconf service name found"
398
" after %i retries, exiting.",
399
self.rename_count)
162
400
raise AvahiServiceError("Too many renames")
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)
401
self.name = str(
402
self.server.GetAlternativeServiceName(self.name))
178
403
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
179
420
def remove(self):
180
421
"""Derived from the Avahi example code"""
181
422
if self.entry_group_state_changed_match is not None:
183
424
self.entry_group_state_changed_match = None
184
425
if self.group is not None:
185
426
self.group.Reset()
427
186
428
def add(self):
187
429
"""Derived from the Avahi example code"""
188
430
self.remove()
193
435
avahi.DBUS_INTERFACE_ENTRY_GROUP)
194
436
self.entry_group_state_changed_match = (
195
437
self.group.connect_to_signal(
196
'StateChanged', self .entry_group_state_changed))
197
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
198
self.name, self.type)
438
"StateChanged", self.entry_group_state_changed))
439
log.debug("Adding Zeroconf service '%s' of type '%s' ...",
440
self.name, self.type)
199
441
self.group.AddService(
200
442
self.interface,
201
443
self.protocol,
205
447
dbus.UInt16(self.port),
206
448
avahi.string_array_to_txt_array(self.TXT))
207
449
self.group.Commit()
450
208
451
def entry_group_state_changed(self, state, error):
209
452
"""Derived from the Avahi example code"""
210
logger.debug("Avahi entry group state change: %i", state)
211
453
log.debug("Avahi entry group state change: %i", state)
454
212
455
if state == avahi.ENTRY_GROUP_ESTABLISHED:
213
logger.debug("Zeroconf service established.")
456
log.debug("Zeroconf service established.")
214
457
elif state == avahi.ENTRY_GROUP_COLLISION:
215
logger.info("Zeroconf service name collision.")
458
log.info("Zeroconf service name collision.")
216
459
self.rename()
217
460
elif state == avahi.ENTRY_GROUP_FAILURE:
218
logger.critical("Avahi: Error in group state changed %s",
219
unicode(error))
220
raise AvahiGroupError("State changed: %s"
221
% unicode(error))
461
log.critical("Avahi: Error in group state changed %s",
462
str(error))
463
raise AvahiGroupError("State changed: {!s}".format(error))
464
222
465
def cleanup(self):
223
466
"""Derived from the Avahi example code"""
224
467
if self.group is not None:
225
468
try:
226
469
self.group.Free()
227
470
except (dbus.exceptions.UnknownMethodException,
228
dbus.exceptions.DBusException) as e:
471
dbus.exceptions.DBusException):
229
472
pass
230
473
self.group = None
231
474
self.remove()
475
232
476
def server_state_changed(self, state, error=None):
233
477
"""Derived from the Avahi example code"""
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" }
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
}
242
485
if state in bad_states:
243
486
if bad_states[state] is not None:
244
487
if error is None:
245
logger.error(bad_states[state])
488
log.error(bad_states[state])
246
489
else:
247
logger.error(bad_states[state] + ": %r", error)
490
log.error(bad_states[state] + ": %r", error)
248
491
self.cleanup()
249
492
elif state == avahi.SERVER_RUNNING:
250
self.add()
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)
251
504
else:
252
505
if error is None:
253
logger.debug("Unknown state: %r", state)
506
log.debug("Unknown state: %r", state)
254
507
else:
255
logger.debug("Unknown state: %r: %r", state, error)
508
log.debug("Unknown state: %r: %r", state, error)
509
256
510
def activate(self):
257
511
"""Derived from the Avahi example code"""
258
512
if self.server is None:
262
516
follow_name_owner_changes=True),
263
517
avahi.DBUS_INTERFACE_SERVER)
264
518
self.server.connect_to_signal("StateChanged",
265
self.server_state_changed)
519
self.server_state_changed)
266
520
self.server_state_changed(self.server.GetState())
267
521
268
522
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):
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:
276
875
"""A representation of a client host served by this server.
277
876
278
877
Attributes:
279
_approved: bool(); 'None' if not yet approved/disapproved
878
approved: bool(); None if not yet approved/disapproved
280
879
approval_delay: datetime.timedelta(); Time to wait for approval
281
880
approval_duration: datetime.timedelta(); Duration of one approval
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
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
286
885
checker_command: string; External command which is run to check
287
886
if client lives. %() expansions are done at
288
887
runtime with vars(self) as dict, so that for
289
888
instance %(name)s can be used in the command.
290
checker_initiator_tag: a gobject event source tag, or None
889
checker_initiator_tag: a GLib event source tag, or None
291
890
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
292
893
current_checker_command: string; current running checker_command
293
disable_hook: If set, called by disable() as disable_hook(self)
294
disable_initiator_tag: a gobject event source tag, or None
894
disable_initiator_tag: a GLib event source tag, or None
295
895
enabled: bool()
296
896
fingerprint: string (40 or 32 hexadecimal digits); used to
297
uniquely identify the client
897
uniquely identify an OpenPGP client
898
key_id: string (64 hexadecimal digits); used to uniquely identify
899
a client using raw public keys
298
900
host: string; available for use by the checker command
299
901
interval: datetime.timedelta(); How often to start a new checker
300
902
last_approval_request: datetime.datetime(); (UTC) or None
301
903
last_checked_ok: datetime.datetime(); (UTC) or None
302
last_enabled: datetime.datetime(); (UTC)
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
303
910
name: string; from the config file, used in log messages and
304
911
D-Bus identifiers
305
912
secret: bytestring; sent verbatim (over TLS) to client
306
913
timeout: datetime.timedelta(); How long from last_checked_ok
307
914
until this client is disabled
308
extended_timeout: extra long timeout when password has been sent
915
extended_timeout: extra long timeout when secret has been sent
309
916
runtime_expansions: Allowed attributes for runtime expansion.
310
917
expires: datetime.datetime(); time (UTC) when a client will be
311
918
disabled, or None
919
server_settings: The server_settings dict from main()
312
920
"""
313
921
314
922
runtime_expansions = ("approval_delay", "approval_duration",
315
"created", "enabled", "fingerprint",
316
"host", "interval", "last_checked_ok",
923
"created", "enabled", "expires", "key_id",
924
"fingerprint", "host", "interval",
925
"last_approval_request", "last_checked_ok",
317
926
"last_enabled", "name", "timeout")
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."""
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):
338
1000
self.name = name
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()
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)
355
1014
else:
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
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
369
1025
self.checker = None
370
1026
self.checker_initiator_tag = None
371
1027
self.disable_initiator_tag = None
372
self.expires = None
373
1028
self.checker_callback_tag = None
374
self.checker_command = config["checker"]
375
1029
self.current_checker_command = None
376
self.last_connect = None
377
self._approved = None
378
self.approved_by_default = config.get("approved_by_default",
379
True)
1030
self.approved = None
380
1031
self.approvals_pending = 0
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
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
389
1045
def send_changedstate(self):
390
self.changedstate.acquire()
391
self.changedstate.notify_all()
392
self.changedstate.release()
393
1046
with self.changedstate:
1047
self.changedstate.notify_all()
1048
394
1049
def enable(self):
395
1050
"""Start this client's checker and timeout hooks"""
396
1051
if getattr(self, "enabled", False):
397
1052
# Already enabled
398
1053
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))
410
1054
self.enabled = True
411
1055
self.last_enabled = datetime.datetime.utcnow()
412
# Also start a new checker *right now*.
413
self.start_checker()
414
1056
self.init_checker()
1057
self.send_changedstate()
1058
415
1059
def disable(self, quiet=True):
416
1060
"""Disable this client."""
417
1061
if not getattr(self, "enabled", False):
418
1062
return False
419
1063
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)
1067
self.disable_initiator_tag = None
1068
self.expires = None
1069
if getattr(self, "checker_initiator_tag", None) is not None:
1070
GLib.source_remove(self.checker_initiator_tag)
1071
self.checker_initiator_tag = None
1072
self.stop_checker()
1073
self.enabled = False
1074
if not quiet:
420
1075
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)
425
self.disable_initiator_tag = None
426
self.expires = None
427
if getattr(self, "checker_initiator_tag", False):
428
gobject.source_remove(self.checker_initiator_tag)
429
self.checker_initiator_tag = None
430
self.stop_checker()
431
if self.disable_hook:
432
self.disable_hook(self)
433
self.enabled = False
434
# Do not run this again if called by a gobject.timeout_add
1076
# Do not run this again if called by a GLib.timeout_add
435
1077
return False
436
1078
437
1079
def __del__(self):
438
self.disable_hook = None
439
1080
self.disable()
440
441
def checker_callback(self, pid, condition, command):
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):
442
1114
"""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()
443
1120
self.checker_callback_tag = None
444
1121
self.checker = None
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))
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))
450
1128
self.checked_ok()
451
1129
else:
452
logger.info("Checker for %(name)s failed",
453
vars(self))
1130
log.info("Checker for %(name)s failed", vars(self))
454
1131
else:
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
"""
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."""
464
1146
if timeout is None:
465
1147
timeout = self.timeout
466
self.last_checked_ok = datetime.datetime.utcnow()
467
gobject.source_remove(self.disable_initiator_tag)
468
self.disable_initiator_tag = (gobject.timeout_add
469
(_timedelta_to_milliseconds
470
(timeout), self.disable))
471
self.expires = datetime.datetime.utcnow() + timeout
472
1148
if self.disable_initiator_tag is not None:
1149
GLib.source_remove(self.disable_initiator_tag)
1150
self.disable_initiator_tag = None
1151
if getattr(self, "enabled", False):
1152
self.disable_initiator_tag = GLib.timeout_add(
1153
int(timeout.total_seconds() * 1000), self.disable)
1154
self.expires = datetime.datetime.utcnow() + timeout
1155
473
1156
def need_approval(self):
474
1157
self.last_approval_request = datetime.datetime.utcnow()
475
476
def start_checker(self):
1158
1159
def start_checker(self, start_was_randomized=False):
477
1160
"""Start a new checker subprocess if one is not running.
478
1161
479
1162
If a checker already exists, leave it running and do
480
1163
nothing."""
481
1164
# The reason for not killing a running checker is that if we
482
# did that, then if a checker (for some reason) started
483
# running slowly and taking more than 'interval' time, the
484
# client would inevitably timeout, since no checker would get
485
# a chance to run to completion. If we instead leave running
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
486
1169
# checkers alone, the checker would have to take more time
487
1170
# than 'timeout' for the client to be disabled, which is as it
488
1171
# should be.
489
490
# If a checker exists, make sure it is not a zombie
491
try:
492
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
493
except (AttributeError, OSError) as error:
494
if (isinstance(error, OSError)
495
and error.errno != errno.ECHILD):
496
raise error
497
else:
498
if pid:
499
logger.warning("Checker was a zombie")
500
gobject.source_remove(self.checker_callback_tag)
501
self.checker_callback(pid, status,
502
self.current_checker_command)
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
503
1177
# Start a new checker if needed
504
1178
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}
505
1183
try:
506
# In case checker_command has exactly one % operator
507
command = self.checker_command % self.host
508
except TypeError:
509
# Escape attributes for the shell
510
escaped_attrs = dict(
511
(attr,
512
re.escape(unicode(str(getattr(self, attr, "")),
513
errors=
514
'replace')))
515
for attr in
516
self.runtime_expansions)
517
518
try:
519
command = self.checker_command % escaped_attrs
520
except TypeError as error:
521
logger.error('Could not format string "%s":'
522
' %s', self.checker_command, error)
523
return True # Try again later
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
524
1189
self.current_checker_command = command
525
try:
526
logger.info("Starting checker %r for %s",
527
command, self.name)
528
# We don't need to redirect stdout and stderr, since
529
# in normal mode, that is already done by daemon(),
530
# and in debug mode we don't want to. (Stdin is
531
# always replaced by /dev/null.)
532
self.checker = subprocess.Popen(command,
533
close_fds=True,
534
shell=True, cwd="/")
535
self.checker_callback_tag = (gobject.child_watch_add
536
(self.checker.pid,
537
self.checker_callback,
538
data=command))
539
# The checker may have completed before the gobject
540
# watch was added. Check for this.
541
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
542
if pid:
543
gobject.source_remove(self.checker_callback_tag)
544
self.checker_callback(pid, status, command)
545
except OSError as error:
546
logger.error("Failed to start subprocess: %s",
547
error)
548
# Re-run this periodically if run by gobject.timeout_add
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
549
1227
return True
550
1228
551
1229
def stop_checker(self):
552
1230
"""Force the checker process, if any, to stop."""
553
1231
if self.checker_callback_tag:
554
gobject.source_remove(self.checker_callback_tag)
1232
GLib.source_remove(self.checker_callback_tag)
555
1233
self.checker_callback_tag = None
556
1234
if getattr(self, "checker", None) is None:
557
1235
return
558
logger.debug("Stopping checker for %(name)s", vars(self))
559
try:
560
os.kill(self.checker.pid, signal.SIGTERM)
561
#time.sleep(0.5)
562
#if self.checker.poll() is None:
563
# os.kill(self.checker.pid, signal.SIGKILL)
564
except OSError as error:
565
if error.errno != errno.ESRCH: # No such process
566
raise
1236
log.debug("Stopping checker for %(name)s", vars(self))
1237
self.checker.terminate()
567
1238
self.checker = None
568
1239
569
1240
570
def dbus_service_property(dbus_interface, signature="v",
571
access="readwrite", byte_arrays=False):
1241
def dbus_service_property(dbus_interface,
1242
signature="v",
1243
access="readwrite",
1244
byte_arrays=False):
572
1245
"""Decorators for marking methods of a DBusObjectWithProperties to
573
1246
become properties on the D-Bus.
574
1247
575
1248
The decorated method will be called with no arguments by "Get"
576
1249
and with one argument by "Set".
577
1250
578
1251
The parameters, where they are supported, are the same as
579
1252
dbus.service.method, except there is only "signature", since the
580
1253
type from Get() and the type sent to Set() is the same.
583
1256
# "Set" method, so we fail early here:
584
1257
if byte_arrays and signature != "ay":
585
1258
raise ValueError("Byte arrays not supported for non-'ay'"
586
" signature %r" % signature)
1259
" signature {!r}".format(signature))
1260
587
1261
def decorator(func):
588
1262
func._dbus_is_property = True
589
1263
func._dbus_interface = dbus_interface
592
1266
func._dbus_name = func.__name__
593
1267
if func._dbus_name.endswith("_dbus_property"):
594
1268
func._dbus_name = func._dbus_name[:-14]
595
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
596
return func
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
1315
return decorator
598
1316
599
1317
600
1318
class DBusPropertyException(dbus.exceptions.DBusException):
601
1319
"""A base class for D-Bus property-related exceptions
602
1320
"""
603
def __unicode__(self):
604
return unicode(str(self))
1321
pass
605
1322
606
1323
607
1324
class DBusPropertyAccessException(DBusPropertyException):
616
1333
pass
617
1334
618
1335
619
class DBusObjectWithProperties(dbus.service.Object):
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):
620
1426
"""A D-Bus object with properties.
621
1427
622
1428
Classes inheriting from this can use the dbus_service_property
623
1429
decorator to expose methods as D-Bus properties. It exposes the
624
1430
standard Get(), Set(), and GetAll() methods on the D-Bus.
625
1431
"""
626
627
@staticmethod
628
def _is_dbus_property(obj):
629
return getattr(obj, "_dbus_is_property", False)
630
631
def _get_all_dbus_properties(self):
632
"""Returns a generator of (name, attribute) pairs
633
"""
634
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
635
for cls in self.__class__.__mro__
636
for name, prop in
637
inspect.getmembers(cls, self._is_dbus_property))
638
1432
639
1433
def _get_dbus_property(self, interface_name, property_name):
640
1434
"""Returns a bound method if one exists which is a D-Bus
641
1435
property with the specified name and interface.
642
1436
"""
643
for cls in self.__class__.__mro__:
644
for name, value in (inspect.getmembers
645
(cls, self._is_dbus_property)):
1437
for cls in self.__class__.__mro__:
1438
for name, value in inspect.getmembers(
1439
cls, self._is_dbus_thing("property")):
646
1440
if (value._dbus_name == property_name
647
1441
and value._dbus_interface == interface_name):
648
1442
return value.__get__(self)
649
1443
650
1444
# No such property
651
raise DBusPropertyNotFound(self.dbus_object_path + ":"
652
+ interface_name + "."
653
+ property_name)
654
655
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
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",
656
1459
out_signature="v")
657
1460
def Get(self, interface_name, property_name):
658
1461
"""Standard D-Bus property Get() method, see D-Bus standard.
664
1467
if not hasattr(value, "variant_level"):
665
1468
return value
666
1469
return type(value)(value, variant_level=value.variant_level+1)
667
1470
668
1471
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
669
1472
def Set(self, interface_name, property_name, value):
670
1473
"""Standard D-Bus property Set() method, see D-Bus standard.
676
1479
# The byte_arrays option is not supported yet on
677
1480
# signatures other than "ay".
678
1481
if prop._dbus_signature != "ay":
679
raise ValueError
680
value = dbus.ByteArray(''.join(unichr(byte)
681
for byte in value))
1482
raise ValueError("Byte arrays not supported for non-"
1483
"'ay' signature {!r}"
1484
.format(prop._dbus_signature))
1485
value = dbus.ByteArray(bytes(value))
682
1486
prop(value)
683
684
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1487
1488
@dbus.service.method(dbus.PROPERTIES_IFACE,
1489
in_signature="s",
685
1490
out_signature="a{sv}")
686
1491
def GetAll(self, interface_name):
687
1492
"""Standard D-Bus property GetAll() method, see D-Bus
688
1493
standard.
689
1494
690
1495
Note: Will not include properties with access="write".
691
1496
"""
692
all = {}
693
for name, prop in self._get_all_dbus_properties():
1497
properties = {}
1498
for name, prop in self._get_all_dbus_things("property"):
694
1499
if (interface_name
695
1500
and interface_name != prop._dbus_interface):
696
1501
# Interface non-empty but did not match
700
1505
continue
701
1506
value = prop()
702
1507
if not hasattr(value, "variant_level"):
703
all[name] = value
1508
properties[name] = value
704
1509
continue
705
all[name] = type(value)(value, variant_level=
706
value.variant_level+1)
707
return dbus.Dictionary(all, signature="sv")
708
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
709
1522
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
710
1523
out_signature="s",
711
path_keyword='object_path',
712
connection_keyword='connection')
1524
path_keyword="object_path",
1525
connection_keyword="connection")
713
1526
def Introspect(self, object_path, connection):
714
"""Standard D-Bus method, overloaded to insert property tags.
1527
"""Overloading of standard D-Bus method.
1528
1529
Inserts property tags and interface annotation tags.
715
1530
"""
716
xmlstring = dbus.service.Object.Introspect(self, object_path,
717
connection)
1531
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1532
object_path,
1533
connection)
718
1534
try:
719
1535
document = xml.dom.minidom.parseString(xmlstring)
1536
720
1537
def make_tag(document, name, prop):
721
1538
e = document.createElement("property")
722
1539
e.setAttribute("name", name)
723
1540
e.setAttribute("type", prop._dbus_signature)
724
1541
e.setAttribute("access", prop._dbus_access)
725
1542
return e
1543
726
1544
for if_tag in document.getElementsByTagName("interface"):
1545
# Add property tags
727
1546
for tag in (make_tag(document, name, prop)
728
1547
for name, prop
729
in self._get_all_dbus_properties()
1548
in self._get_all_dbus_things("property")
730
1549
if prop._dbus_interface
731
1550
== if_tag.getAttribute("name")):
732
1551
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)
733
1568
# Add the names to the return values for the
734
1569
# "org.freedesktop.DBus.Properties" methods
735
1570
if (if_tag.getAttribute("name")
749
1584
document.unlink()
750
1585
except (AttributeError, xml.dom.DOMException,
751
1586
xml.parsers.expat.ExpatError) as error:
752
logger.error("Failed to override Introspection method",
753
error)
754
return xmlstring
755
756
757
def datetime_to_dbus (dt, variant_level=0):
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):
758
1664
"""Convert a UTC datetime.datetime() to a D-Bus type."""
759
1665
if dt is None:
760
return dbus.String("", variant_level = variant_level)
761
return dbus.String(dt.isoformat(),
762
variant_level=variant_level)
763
764
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
765
.__metaclass__):
766
"""Applied to an empty subclass of a D-Bus object, this metaclass
767
will add additional D-Bus attributes matching a certain pattern.
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).
768
1692
"""
769
def __new__(mcs, name, bases, attr):
770
# Go through all the base classes which could have D-Bus
771
# methods, signals, or properties in them
772
for base in (b for b in bases
773
if issubclass(b, dbus.service.Object)):
774
# Go though all attributes of the base class
775
for attrname, attribute in inspect.getmembers(base):
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):
776
1701
# Ignore non-D-Bus attributes, and D-Bus attributes
777
1702
# with the wrong interface name
778
1703
if (not hasattr(attribute, "_dbus_interface")
779
or not attribute._dbus_interface
780
.startswith("se.recompile.Mandos")):
1704
or not attribute._dbus_interface.startswith(
1705
orig_interface_name)):
781
1706
continue
782
1707
# Create an alternate D-Bus interface name based on
783
1708
# the current name
784
alt_interface = (attribute._dbus_interface
785
.replace("se.recompile.Mandos",
786
"se.bsnet.fukt.Mandos"))
1709
alt_interface = attribute._dbus_interface.replace(
1710
orig_interface_name, alt_interface_name)
1711
interface_names.add(alt_interface)
787
1712
# Is this a D-Bus signal?
788
1713
if getattr(attribute, "_dbus_is_signal", False):
789
# Extract the original non-method function by
790
# black magic
791
nonmethod_func = (dict(
1714
# Extract the original non-method undecorated
1715
# function by black magic
1716
if sys.version_info.major == 2:
1717
nonmethod_func = (dict(
792
1718
zip(attribute.func_code.co_freevars,
793
attribute.__closure__))["func"]
794
.cell_contents)
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
1726
# Create a new, but exactly alike, function
796
1727
# object, and decorate it to be a new D-Bus signal
797
1728
# with the alternate D-Bus interface name
798
new_function = (dbus.service.signal
799
(alt_interface,
800
attribute._dbus_signature)
801
(types.FunctionType(
802
nonmethod_func.func_code,
803
nonmethod_func.func_globals,
804
nonmethod_func.func_name,
805
nonmethod_func.func_defaults,
806
nonmethod_func.func_closure)))
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
807
1740
# Define a creator of a function to call both the
808
# old and new functions, so both the old and new
809
# signals gets sent when the function is called
1741
# original and alternate functions, so both the
1742
# original and alternate signals gets sent when
1743
# the function is called
810
1744
def fixscope(func1, func2):
811
1745
"""This function is a scope container to pass
812
1746
func1 and func2 to the "call_both" function
813
1747
outside of its arguments"""
1748
1749
@functools.wraps(func2)
814
1750
def call_both(*args, **kwargs):
815
1751
"""This function will emit two D-Bus
816
1752
signals by calling func1 and func2"""
817
1753
func1(*args, **kwargs)
818
1754
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
819
1761
return call_both
820
1762
# Create the "call_both" function and add it to
821
1763
# the class
822
attr[attrname] = fixscope(attribute,
823
new_function)
1764
attr[attrname] = fixscope(attribute, new_function)
824
1765
# Is this a D-Bus method?
825
1766
elif getattr(attribute, "_dbus_is_method", False):
826
1767
# Create a new, but exactly alike, function
827
1768
# object. Decorate it to be a new D-Bus method
828
1769
# with the alternate D-Bus interface name. Add it
829
1770
# to the class.
830
attr[attrname] = (dbus.service.method
831
(alt_interface,
832
attribute._dbus_in_signature,
833
attribute._dbus_out_signature)
834
(types.FunctionType
835
(attribute.func_code,
836
attribute.func_globals,
837
attribute.func_name,
838
attribute.func_defaults,
839
attribute.func_closure)))
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
840
1783
# Is this a D-Bus property?
841
1784
elif getattr(attribute, "_dbus_is_property", False):
842
1785
# Create a new, but exactly alike, function
843
1786
# object, and decorate it to be a new D-Bus
844
1787
# property with the alternate D-Bus interface
845
1788
# name. Add it to the class.
846
attr[attrname] = (dbus_service_property
847
(alt_interface,
848
attribute._dbus_signature,
849
attribute._dbus_access,
850
attribute
851
._dbus_get_args_options
852
["byte_arrays"])
853
(types.FunctionType
854
(attribute.func_code,
855
attribute.func_globals,
856
attribute.func_name,
857
attribute.func_defaults,
858
attribute.func_closure)))
859
return type.__new__(mcs, name, bases, attr)
860
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"})
861
1841
class ClientDBus(Client, DBusObjectWithProperties):
862
1842
"""A Client class using D-Bus
863
1843
864
1844
Attributes:
865
1845
dbus_object_path: dbus.ObjectPath
866
1846
bus: dbus.SystemBus()
867
1847
"""
868
1848
869
1849
runtime_expansions = (Client.runtime_expansions
870
+ ("dbus_object_path",))
871
1850
+ ("dbus_object_path", ))
1851
1852
_interface = "se.recompile.Mandos.Client"
1853
872
1854
# dbus.service.Object doesn't use super(), so we can't either.
873
874
def __init__(self, bus = None, *args, **kwargs):
875
self._approvals_pending = 0
1855
1856
def __init__(self, bus=None, *args, **kwargs):
876
1857
self.bus = bus
877
1858
Client.__init__(self, *args, **kwargs)
878
1859
# Only now, when this client is initialized, can it show up on
879
1860
# the D-Bus
880
client_object_name = unicode(self.name).translate(
1861
client_object_name = str(self.name).translate(
881
1862
{ord("."): ord("_"),
882
1863
ord("-"): ord("_")})
883
self.dbus_object_path = (dbus.ObjectPath
884
("/clients/" + client_object_name))
1864
self.dbus_object_path = dbus.ObjectPath(
1865
"/clients/" + client_object_name)
885
1866
DBusObjectWithProperties.__init__(self, self.bus,
886
1867
self.dbus_object_path)
887
888
def notifychangeproperty(transform_func,
889
dbus_name, type_func=lambda x: x,
890
variant_level=1):
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):
891
1874
""" Modify a variable so that it's a property which announces
892
1875
its changes to DBus.
893
1876
894
transform_fun: Function that takes a value and transforms it
895
to a D-Bus type.
1877
transform_fun: Function that takes a value and a variant_level
1878
and transforms it to a D-Bus type.
896
1879
dbus_name: D-Bus name of the variable
897
1880
type_func: Function that transform the value before sending it
898
1881
to the D-Bus. Default: no transform
899
1882
variant_level: D-Bus variant level. Default: 1
900
1883
"""
901
attrname = "_{0}".format(dbus_name)
1884
attrname = "_{}".format(dbus_name)
1885
902
1886
def setter(self, value):
903
1887
if hasattr(self, "dbus_object_path"):
904
1888
if (not hasattr(self, attrname) or
905
1889
type_func(getattr(self, attrname, None))
906
1890
!= type_func(value)):
907
dbus_value = transform_func(type_func(value),
908
variant_level)
909
self.PropertyChanged(dbus.String(dbus_name),
910
dbus_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())
911
1906
setattr(self, attrname, value)
912
1907
913
1908
return property(lambda self: getattr(self, attrname), setter)
914
915
1909
916
1910
expires = notifychangeproperty(datetime_to_dbus, "Expires")
917
1911
approvals_pending = notifychangeproperty(dbus.Boolean,
918
1912
"ApprovalPending",
919
type_func = bool)
1913
type_func=bool)
920
1914
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
921
1915
last_enabled = notifychangeproperty(datetime_to_dbus,
922
1916
"LastEnabled")
923
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
924
type_func = lambda checker:
925
checker is not None)
1917
checker = notifychangeproperty(
1918
dbus.Boolean, "CheckerRunning",
1919
type_func=lambda checker: checker is not None)
926
1920
last_checked_ok = notifychangeproperty(datetime_to_dbus,
927
1921
"LastCheckedOK")
1922
last_checker_status = notifychangeproperty(dbus.Int16,
1923
"LastCheckerStatus")
928
1924
last_approval_request = notifychangeproperty(
929
1925
datetime_to_dbus, "LastApprovalRequest")
930
1926
approved_by_default = notifychangeproperty(dbus.Boolean,
931
1927
"ApprovedByDefault")
932
approval_delay = notifychangeproperty(dbus.UInt16,
933
"ApprovalDelay",
934
type_func =
935
_timedelta_to_milliseconds)
1928
approval_delay = notifychangeproperty(
1929
dbus.UInt64, "ApprovalDelay",
1930
type_func=lambda td: td.total_seconds() * 1000)
936
1931
approval_duration = notifychangeproperty(
937
dbus.UInt16, "ApprovalDuration",
938
type_func = _timedelta_to_milliseconds)
1932
dbus.UInt64, "ApprovalDuration",
1933
type_func=lambda td: td.total_seconds() * 1000)
939
1934
host = notifychangeproperty(dbus.String, "Host")
940
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
941
type_func =
942
_timedelta_to_milliseconds)
1935
timeout = notifychangeproperty(
1936
dbus.UInt64, "Timeout",
1937
type_func=lambda td: td.total_seconds() * 1000)
943
1938
extended_timeout = notifychangeproperty(
944
dbus.UInt16, "ExtendedTimeout",
945
type_func = _timedelta_to_milliseconds)
946
interval = notifychangeproperty(dbus.UInt16,
947
"Interval",
948
type_func =
949
_timedelta_to_milliseconds)
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)
950
1944
checker_command = notifychangeproperty(dbus.String, "Checker")
951
1945
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1946
invalidate_only=True)
1947
952
1948
del notifychangeproperty
953
1949
954
1950
def __del__(self, *args, **kwargs):
955
1951
try:
956
1952
self.remove_from_connection()
959
1955
if hasattr(DBusObjectWithProperties, "__del__"):
960
1956
DBusObjectWithProperties.__del__(self, *args, **kwargs)
961
1957
Client.__del__(self, *args, **kwargs)
962
963
def checker_callback(self, pid, condition, command,
964
*args, **kwargs):
965
self.checker_callback_tag = None
966
self.checker = None
967
if os.WIFEXITED(condition):
968
exitstatus = os.WEXITSTATUS(condition)
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:
969
1966
# Emit D-Bus signal
970
1967
self.CheckerCompleted(dbus.Int16(exitstatus),
971
dbus.Int64(condition),
1968
# This is specific to GNU libC
1969
dbus.Int64(exitstatus << 8),
972
1970
dbus.String(command))
973
1971
else:
974
1972
# Emit D-Bus signal
975
1973
self.CheckerCompleted(dbus.Int16(-1),
976
dbus.Int64(condition),
1974
dbus.Int64(
1975
# This is specific to GNU libC
1976
(exitstatus << 8)
1977
| self.last_checker_signal),
977
1978
dbus.String(command))
978
979
return Client.checker_callback(self, pid, condition, command,
980
*args, **kwargs)
981
1979
return ret
1980
982
1981
def start_checker(self, *args, **kwargs):
983
old_checker = self.checker
984
if self.checker is not None:
985
old_checker_pid = self.checker.pid
986
else:
987
old_checker_pid = None
1982
old_checker_pid = getattr(self.checker, "pid", None)
988
1983
r = Client.start_checker(self, *args, **kwargs)
989
1984
# Only if new checker process was started
990
1985
if (self.checker is not None
992
1987
# Emit D-Bus signal
993
1988
self.CheckerStarted(self.current_checker_command)
994
1989
return r
995
1990
996
1991
def _reset_approved(self):
997
self._approved = None
1992
self.approved = None
998
1993
return False
999
1994
1000
1995
def approve(self, value=True):
1996
self.approved = value
1997
GLib.timeout_add(int(self.approval_duration.total_seconds()
1998
* 1000), self._reset_approved)
1001
1999
self.send_changedstate()
1002
self._approved = value
1003
gobject.timeout_add(_timedelta_to_milliseconds
1004
(self.approval_duration),
1005
self._reset_approved)
1006
1007
1008
## D-Bus methods, signals & properties
1009
_interface = "se.recompile.Mandos.Client"
1010
1011
## Signals
1012
2000
2001
# D-Bus methods, signals & properties
2002
2003
# Interfaces
2004
2005
# Signals
2006
1013
2007
# CheckerCompleted - signal
1014
2008
@dbus.service.signal(_interface, signature="nxs")
1015
2009
def CheckerCompleted(self, exitcode, waitstatus, command):
1016
2010
"D-Bus signal"
1017
2011
pass
1018
2012
1019
2013
# CheckerStarted - signal
1020
2014
@dbus.service.signal(_interface, signature="s")
1021
2015
def CheckerStarted(self, command):
1022
2016
"D-Bus signal"
1023
2017
pass
1024
2018
1025
2019
# PropertyChanged - signal
2020
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1026
2021
@dbus.service.signal(_interface, signature="sv")
1027
2022
def PropertyChanged(self, property, value):
1028
2023
"D-Bus signal"
1029
2024
pass
1030
2025
1031
2026
# GotSecret - signal
1032
2027
@dbus.service.signal(_interface)
1033
2028
def GotSecret(self):
1036
2031
server to mandos-client
1037
2032
"""
1038
2033
pass
1039
2034
1040
2035
# Rejected - signal
1041
2036
@dbus.service.signal(_interface, signature="s")
1042
2037
def Rejected(self, reason):
1043
2038
"D-Bus signal"
1044
2039
pass
1045
2040
1046
2041
# NeedApproval - signal
1047
2042
@dbus.service.signal(_interface, signature="tb")
1048
2043
def NeedApproval(self, timeout, default):
1049
2044
"D-Bus signal"
1050
2045
return self.need_approval()
1051
1052
## Methods
1053
2046
2047
# Methods
2048
1054
2049
# Approve - method
1055
2050
@dbus.service.method(_interface, in_signature="b")
1056
2051
def Approve(self, value):
1057
2052
self.approve(value)
1058
2053
1059
2054
# CheckedOK - method
1060
2055
@dbus.service.method(_interface)
1061
2056
def CheckedOK(self):
1062
2057
self.checked_ok()
1063
2058
1064
2059
# Enable - method
2060
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1065
2061
@dbus.service.method(_interface)
1066
2062
def Enable(self):
1067
2063
"D-Bus method"
1068
2064
self.enable()
1069
2065
1070
2066
# StartChecker - method
2067
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1071
2068
@dbus.service.method(_interface)
1072
2069
def StartChecker(self):
1073
2070
"D-Bus method"
1074
2071
self.start_checker()
1075
2072
1076
2073
# Disable - method
2074
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1077
2075
@dbus.service.method(_interface)
1078
2076
def Disable(self):
1079
2077
"D-Bus method"
1080
2078
self.disable()
1081
2079
1082
2080
# StopChecker - method
2081
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1083
2082
@dbus.service.method(_interface)
1084
2083
def StopChecker(self):
1085
2084
self.stop_checker()
1086
1087
## Properties
1088
2085
2086
# Properties
2087
1089
2088
# ApprovalPending - property
1090
2089
@dbus_service_property(_interface, signature="b", access="read")
1091
2090
def ApprovalPending_dbus_property(self):
1092
2091
return dbus.Boolean(bool(self.approvals_pending))
1093
2092
1094
2093
# ApprovedByDefault - property
1095
@dbus_service_property(_interface, signature="b",
2094
@dbus_service_property(_interface,
2095
signature="b",
1096
2096
access="readwrite")
1097
2097
def ApprovedByDefault_dbus_property(self, value=None):
1098
2098
if value is None: # get
1099
2099
return dbus.Boolean(self.approved_by_default)
1100
2100
self.approved_by_default = bool(value)
1101
2101
1102
2102
# ApprovalDelay - property
1103
@dbus_service_property(_interface, signature="t",
2103
@dbus_service_property(_interface,
2104
signature="t",
1104
2105
access="readwrite")
1105
2106
def ApprovalDelay_dbus_property(self, value=None):
1106
2107
if value is None: # get
1107
return dbus.UInt64(self.approval_delay_milliseconds())
2108
return dbus.UInt64(self.approval_delay.total_seconds()
2109
* 1000)
1108
2110
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1109
2111
1110
2112
# ApprovalDuration - property
1111
@dbus_service_property(_interface, signature="t",
2113
@dbus_service_property(_interface,
2114
signature="t",
1112
2115
access="readwrite")
1113
2116
def ApprovalDuration_dbus_property(self, value=None):
1114
2117
if value is None: # get
1115
return dbus.UInt64(_timedelta_to_milliseconds(
1116
self.approval_duration))
2118
return dbus.UInt64(self.approval_duration.total_seconds()
2119
* 1000)
1117
2120
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1118
2121
1119
2122
# Name - property
2123
@dbus_annotations(
2124
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1120
2125
@dbus_service_property(_interface, signature="s", access="read")
1121
2126
def Name_dbus_property(self):
1122
2127
return dbus.String(self.name)
1123
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
1124
2136
# Fingerprint - property
2137
@dbus_annotations(
2138
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1125
2139
@dbus_service_property(_interface, signature="s", access="read")
1126
2140
def Fingerprint_dbus_property(self):
1127
2141
return dbus.String(self.fingerprint)
1128
2142
1129
2143
# Host - property
1130
@dbus_service_property(_interface, signature="s",
2144
@dbus_service_property(_interface,
2145
signature="s",
1131
2146
access="readwrite")
1132
2147
def Host_dbus_property(self, value=None):
1133
2148
if value is None: # get
1134
2149
return dbus.String(self.host)
1135
self.host = value
1136
2150
self.host = str(value)
2151
1137
2152
# Created - property
2153
@dbus_annotations(
2154
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1138
2155
@dbus_service_property(_interface, signature="s", access="read")
1139
2156
def Created_dbus_property(self):
1140
return dbus.String(datetime_to_dbus(self.created))
1141
2157
return datetime_to_dbus(self.created)
2158
1142
2159
# LastEnabled - property
1143
2160
@dbus_service_property(_interface, signature="s", access="read")
1144
2161
def LastEnabled_dbus_property(self):
1145
2162
return datetime_to_dbus(self.last_enabled)
1146
2163
1147
2164
# Enabled - property
1148
@dbus_service_property(_interface, signature="b",
2165
@dbus_service_property(_interface,
2166
signature="b",
1149
2167
access="readwrite")
1150
2168
def Enabled_dbus_property(self, value=None):
1151
2169
if value is None: # get
1154
2172
self.enable()
1155
2173
else:
1156
2174
self.disable()
1157
2175
1158
2176
# LastCheckedOK - property
1159
@dbus_service_property(_interface, signature="s",
2177
@dbus_service_property(_interface,
2178
signature="s",
1160
2179
access="readwrite")
1161
2180
def LastCheckedOK_dbus_property(self, value=None):
1162
2181
if value is not None:
1163
2182
self.checked_ok()
1164
2183
return
1165
2184
return datetime_to_dbus(self.last_checked_ok)
1166
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
1167
2191
# Expires - property
1168
2192
@dbus_service_property(_interface, signature="s", access="read")
1169
2193
def Expires_dbus_property(self):
1170
2194
return datetime_to_dbus(self.expires)
1171
2195
1172
2196
# LastApprovalRequest - property
1173
2197
@dbus_service_property(_interface, signature="s", access="read")
1174
2198
def LastApprovalRequest_dbus_property(self):
1175
2199
return datetime_to_dbus(self.last_approval_request)
1176
2200
1177
2201
# Timeout - property
1178
@dbus_service_property(_interface, signature="t",
2202
@dbus_service_property(_interface,
2203
signature="t",
1179
2204
access="readwrite")
1180
2205
def Timeout_dbus_property(self, value=None):
1181
2206
if value is None: # get
1182
return dbus.UInt64(self.timeout_milliseconds())
2207
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2208
old_timeout = self.timeout
1183
2209
self.timeout = datetime.timedelta(0, 0, 0, value)
1184
if getattr(self, "disable_initiator_tag", None) is None:
1185
return
1186
# Reschedule timeout
1187
gobject.source_remove(self.disable_initiator_tag)
1188
self.disable_initiator_tag = None
1189
self.expires = None
1190
time_to_die = (self.
1191
_timedelta_to_milliseconds((self
1192
.last_checked_ok
1193
+ self.timeout)
1194
- datetime.datetime
1195
.utcnow()))
1196
if time_to_die <= 0:
1197
# The timeout has passed
1198
self.disable()
1199
else:
1200
self.expires = (datetime.datetime.utcnow()
1201
+ datetime.timedelta(milliseconds =
1202
time_to_die))
1203
self.disable_initiator_tag = (gobject.timeout_add
1204
(time_to_die, self.disable))
1205
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
1206
2226
# ExtendedTimeout - property
1207
@dbus_service_property(_interface, signature="t",
2227
@dbus_service_property(_interface,
2228
signature="t",
1208
2229
access="readwrite")
1209
2230
def ExtendedTimeout_dbus_property(self, value=None):
1210
2231
if value is None: # get
1211
return dbus.UInt64(self.extended_timeout_milliseconds())
2232
return dbus.UInt64(self.extended_timeout.total_seconds()
2233
* 1000)
1212
2234
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1213
2235
1214
2236
# Interval - property
1215
@dbus_service_property(_interface, signature="t",
2237
@dbus_service_property(_interface,
2238
signature="t",
1216
2239
access="readwrite")
1217
2240
def Interval_dbus_property(self, value=None):
1218
2241
if value is None: # get
1219
return dbus.UInt64(self.interval_milliseconds())
2242
return dbus.UInt64(self.interval.total_seconds() * 1000)
1220
2243
self.interval = datetime.timedelta(0, 0, 0, value)
1221
2244
if getattr(self, "checker_initiator_tag", None) is None:
1222
2245
return
1223
# Reschedule checker run
1224
gobject.source_remove(self.checker_initiator_tag)
1225
self.checker_initiator_tag = (gobject.timeout_add
1226
(value, self.start_checker))
1227
self.start_checker() # Start one now, too
1228
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
1229
2253
# Checker - property
1230
@dbus_service_property(_interface, signature="s",
2254
@dbus_service_property(_interface,
2255
signature="s",
1231
2256
access="readwrite")
1232
2257
def Checker_dbus_property(self, value=None):
1233
2258
if value is None: # get
1234
2259
return dbus.String(self.checker_command)
1235
self.checker_command = value
1236
2260
self.checker_command = str(value)
2261
1237
2262
# CheckerRunning - property
1238
@dbus_service_property(_interface, signature="b",
2263
@dbus_service_property(_interface,
2264
signature="b",
1239
2265
access="readwrite")
1240
2266
def CheckerRunning_dbus_property(self, value=None):
1241
2267
if value is None: # get
1244
2270
self.start_checker()
1245
2271
else:
1246
2272
self.stop_checker()
1247
2273
1248
2274
# ObjectPath - property
2275
@dbus_annotations(
2276
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2277
"org.freedesktop.DBus.Deprecated": "true"})
1249
2278
@dbus_service_property(_interface, signature="o", access="read")
1250
2279
def ObjectPath_dbus_property(self):
1251
return self.dbus_object_path # is already a dbus.ObjectPath
1252
2280
return self.dbus_object_path # is already a dbus.ObjectPath
2281
1253
2282
# Secret = property
1254
@dbus_service_property(_interface, signature="ay",
1255
access="write", byte_arrays=True)
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
2290
def Secret_dbus_property(self, value):
1257
self.secret = str(value)
1258
2291
self.secret = bytes(value)
2292
1259
2293
del _interface
1260
2294
1261
2295
1262
class ProxyClient(object):
1263
def __init__(self, child_pipe, fpr, address):
2296
class ProxyClient:
2297
def __init__(self, child_pipe, key_id, fpr, address):
1264
2298
self._pipe = child_pipe
1265
self._pipe.send(('init', fpr, address))
2299
self._pipe.send(("init", key_id, fpr, address))
1266
2300
if not self._pipe.recv():
1267
raise KeyError()
1268
2301
raise KeyError(key_id or fpr)
2302
1269
2303
def __getattribute__(self, name):
1270
if(name == '_pipe'):
2304
if name == "_pipe":
1271
2305
return super(ProxyClient, self).__getattribute__(name)
1272
self._pipe.send(('getattr', name))
2306
self._pipe.send(("getattr", name))
1273
2307
data = self._pipe.recv()
1274
if data[0] == 'data':
2308
if data[0] == "data":
1275
2309
return data[1]
1276
if data[0] == 'function':
2310
if data[0] == "function":
2311
1277
2312
def func(*args, **kwargs):
1278
self._pipe.send(('funcall', name, args, kwargs))
2313
self._pipe.send(("funcall", name, args, kwargs))
1279
2314
return self._pipe.recv()[1]
2315
1280
2316
return func
1281
2317
1282
2318
def __setattr__(self, name, value):
1283
if(name == '_pipe'):
2319
if name == "_pipe":
1284
2320
return super(ProxyClient, self).__setattr__(name, value)
1285
self._pipe.send(('setattr', name, value))
2321
self._pipe.send(("setattr", name, value))
1286
2322
1287
class ClientDBusTransitional(ClientDBus):
1288
__metaclass__ = AlternateDBusNamesMetaclass
1289
2323
1290
2324
class ClientHandler(socketserver.BaseRequestHandler, object):
1291
2325
"""A class to handle client connections.
1292
2326
1293
2327
Instantiated once for each connection to handle it.
1294
2328
Note: This will run in its own forked process."""
1295
2329
1296
2330
def handle(self):
1297
2331
with contextlib.closing(self.server.child_pipe) as child_pipe:
1298
logger.info("TCP connection from: %s",
1299
unicode(self.client_address))
1300
logger.debug("Pipe FD: %d",
1301
self.server.child_pipe.fileno())
1302
1303
session = (gnutls.connection
1304
.ClientSession(self.request,
1305
gnutls.connection
1306
.X509Credentials()))
1307
1308
# Note: gnutls.connection.X509Credentials is really a
1309
# generic GnuTLS certificate credentials object so long as
1310
# no X.509 keys are added to it. Therefore, we can use it
1311
# here despite using OpenPGP certificates.
1312
1313
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1314
# "+AES-256-CBC", "+SHA1",
1315
# "+COMP-NULL", "+CTYPE-OPENPGP",
1316
# "+DHE-DSS"))
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"))
1317
2342
# Use a fallback default, since this MUST be set.
1318
2343
priority = self.server.gnutls_priority
1319
2344
if priority is None:
1320
2345
priority = "NORMAL"
1321
(gnutls.library.functions
1322
.gnutls_priority_set_direct(session._c_object,
1323
priority, None))
1324
2346
gnutls.priority_set_direct(session,
2347
priority.encode("utf-8"), None)
2348
1325
2349
# Start communication using the Mandos protocol
1326
2350
# Get protocol number
1327
2351
line = self.request.makefile().readline()
1328
logger.debug("Protocol version: %r", line)
2352
log.debug("Protocol version: %r", line)
1329
2353
try:
1330
2354
if int(line.strip().split()[0]) > 1:
1331
raise RuntimeError
2355
raise RuntimeError(line)
1332
2356
except (ValueError, IndexError, RuntimeError) as error:
1333
logger.error("Unknown protocol version: %s", error)
2357
log.error("Unknown protocol version: %s", error)
1334
2358
return
1335
2359
1336
2360
# Start GnuTLS connection
1337
2361
try:
1338
2362
session.handshake()
1339
except gnutls.errors.GNUTLSError as error:
1340
logger.warning("Handshake failed: %s", error)
2363
except gnutls.Error as error:
2364
log.warning("Handshake failed: %s", error)
1341
2365
# Do not run session.bye() here: the session is not
1342
2366
# established. Just abandon the request.
1343
2367
return
1344
logger.debug("Handshake succeeded")
1345
2368
log.debug("Handshake succeeded")
2369
1346
2370
approval_required = False
1347
2371
try:
1348
try:
1349
fpr = self.fingerprint(self.peer_certificate
1350
(session))
1351
except (TypeError,
1352
gnutls.errors.GNUTLSError) as error:
1353
logger.warning("Bad certificate: %s", error)
1354
return
1355
logger.debug("Fingerprint: %s", fpr)
1356
1357
try:
1358
client = ProxyClient(child_pipe, fpr,
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,
1359
2396
self.client_address)
1360
2397
except KeyError:
1361
2398
return
1362
2399
1363
2400
if client.approval_delay:
1364
2401
delay = client.approval_delay
1365
2402
client.approvals_pending += 1
1366
2403
approval_required = True
1367
2404
1368
2405
while True:
1369
2406
if not client.enabled:
1370
logger.info("Client %s is disabled",
1371
client.name)
2407
log.info("Client %s is disabled", client.name)
1372
2408
if self.server.use_dbus:
1373
2409
# Emit D-Bus signal
1374
2410
client.Rejected("Disabled")
1375
2411
return
1376
1377
if client._approved or not client.approval_delay:
1378
#We are approved or approval is disabled
2412
2413
if client.approved or not client.approval_delay:
2414
# We are approved or approval is disabled
1379
2415
break
1380
elif client._approved is None:
1381
logger.info("Client %s needs approval",
2416
elif client.approved is None:
2417
log.info("Client %s needs approval",
2418
client.name)
2419
if self.server.use_dbus:
2420
# Emit D-Bus signal
2421
client.NeedApproval(
2422
client.approval_delay.total_seconds()
2423
* 1000, client.approved_by_default)
2424
else:
2425
log.warning("Client %s was not approved",
1382
2426
client.name)
1383
2427
if self.server.use_dbus:
1384
2428
# Emit D-Bus signal
1385
client.NeedApproval(
1386
client.approval_delay_milliseconds(),
1387
client.approved_by_default)
1388
else:
1389
logger.warning("Client %s was not approved",
1390
client.name)
1391
if self.server.use_dbus:
1392
# Emit D-Bus signal
1393
2429
client.Rejected("Denied")
1394
2430
return
1395
1396
#wait until timeout or approved
2431
2432
# wait until timeout or approved
1397
2433
time = datetime.datetime.now()
1398
2434
client.changedstate.acquire()
1399
(client.changedstate.wait
1400
(float(client._timedelta_to_milliseconds(delay)
1401
/ 1000)))
2435
client.changedstate.wait(delay.total_seconds())
1402
2436
client.changedstate.release()
1403
2437
time2 = datetime.datetime.now()
1404
2438
if (time2 - time) >= delay:
1405
2439
if not client.approved_by_default:
1406
logger.warning("Client %s timed out while"
1407
" waiting for approval",
1408
client.name)
2440
log.warning("Client %s timed out while"
2441
" waiting for approval",
2442
client.name)
1409
2443
if self.server.use_dbus:
1410
2444
# Emit D-Bus signal
1411
2445
client.Rejected("Approval timed out")
1414
2448
break
1415
2449
else:
1416
2450
delay -= time2 - time
1417
1418
sent_size = 0
1419
while sent_size < len(client.secret):
1420
try:
1421
sent = session.send(client.secret[sent_size:])
1422
except gnutls.errors.GNUTLSError as error:
1423
logger.warning("gnutls send failed")
1424
return
1425
logger.debug("Sent: %d, remaining: %d",
1426
sent, len(client.secret)
1427
- (sent_size + sent))
1428
sent_size += sent
1429
1430
logger.info("Sending secret to %s", client.name)
1431
# bump the timeout as if seen
1432
client.checked_ok(client.extended_timeout)
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)
2459
# bump the timeout using extended_timeout
2460
client.bump_timeout(client.extended_timeout)
1433
2461
if self.server.use_dbus:
1434
2462
# Emit D-Bus signal
1435
2463
client.GotSecret()
1436
2464
1437
2465
finally:
1438
2466
if approval_required:
1439
2467
client.approvals_pending -= 1
1440
2468
try:
1441
2469
session.bye()
1442
except gnutls.errors.GNUTLSError as error:
1443
logger.warning("GnuTLS bye failed")
1444
2470
except gnutls.Error as error:
2471
log.warning("GnuTLS bye failed", exc_info=error)
2472
1445
2473
@staticmethod
1446
2474
def peer_certificate(session):
1447
"Return the peer's OpenPGP certificate as a bytestring"
1448
# If not an OpenPGP certificate...
1449
if (gnutls.library.functions
1450
.gnutls_certificate_type_get(session._c_object)
1451
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1452
# ...do the normal thing
1453
return session.peer_certificate
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""
1454
2491
list_size = ctypes.c_uint(1)
1455
cert_list = (gnutls.library.functions
1456
.gnutls_certificate_get_peers
1457
(session._c_object, ctypes.byref(list_size)))
2492
cert_list = (gnutls.certificate_get_peers
2493
(session, ctypes.byref(list_size)))
1458
2494
if not bool(cert_list) and list_size.value != 0:
1459
raise gnutls.errors.GNUTLSError("error getting peer"
1460
" certificate")
2495
raise gnutls.Error("error getting peer certificate")
1461
2496
if list_size.value == 0:
1462
2497
return None
1463
2498
cert = cert_list[0]
1464
2499
return ctypes.string_at(cert.data, cert.size)
1465
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
1466
2536
@staticmethod
1467
2537
def fingerprint(openpgp):
1468
2538
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1469
2539
# New GnuTLS "datum" with the OpenPGP public key
1470
datum = (gnutls.library.types
1471
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1472
ctypes.POINTER
1473
(ctypes.c_ubyte)),
1474
ctypes.c_uint(len(openpgp))))
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)))
1475
2544
# New empty GnuTLS certificate
1476
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1477
(gnutls.library.functions
1478
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2545
crt = gnutls.openpgp_crt_t()
2546
gnutls.openpgp_crt_init(ctypes.byref(crt))
1479
2547
# Import the OpenPGP public key into the certificate
1480
(gnutls.library.functions
1481
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1482
gnutls.library.constants
1483
.GNUTLS_OPENPGP_FMT_RAW))
2548
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2549
gnutls.OPENPGP_FMT_RAW)
1484
2550
# Verify the self signature in the key
1485
2551
crtverify = ctypes.c_uint()
1486
(gnutls.library.functions
1487
.gnutls_openpgp_crt_verify_self(crt, 0,
1488
ctypes.byref(crtverify)))
2552
gnutls.openpgp_crt_verify_self(crt, 0,
2553
ctypes.byref(crtverify))
1489
2554
if crtverify.value != 0:
1490
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1491
raise (gnutls.errors.CertificateSecurityError
1492
("Verify failed"))
2555
gnutls.openpgp_crt_deinit(crt)
2556
raise gnutls.CertificateSecurityError(code
2557
=crtverify.value)
1493
2558
# New buffer for the fingerprint
1494
2559
buf = ctypes.create_string_buffer(20)
1495
2560
buf_len = ctypes.c_size_t()
1496
2561
# Get the fingerprint from the certificate into the buffer
1497
(gnutls.library.functions
1498
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1499
ctypes.byref(buf_len)))
2562
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2563
ctypes.byref(buf_len))
1500
2564
# Deinit the certificate
1501
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2565
gnutls.openpgp_crt_deinit(crt)
1502
2566
# Convert the buffer to a Python bytestring
1503
2567
fpr = ctypes.string_at(buf, buf_len.value)
1504
2568
# Convert the bytestring to hexadecimal notation
1505
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2569
hex_fpr = binascii.hexlify(fpr).upper()
1506
2570
return hex_fpr
1507
2571
1508
2572
1509
class MultiprocessingMixIn(object):
2573
class MultiprocessingMixIn:
1510
2574
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2575
1511
2576
def sub_process_main(self, request, address):
1512
2577
try:
1513
2578
self.finish_request(request, address)
1514
except:
2579
except Exception:
1515
2580
self.handle_error(request, address)
1516
2581
self.close_request(request)
1517
2582
1518
2583
def process_request(self, request, address):
1519
2584
"""Start a new process to process the request."""
1520
proc = multiprocessing.Process(target = self.sub_process_main,
1521
args = (request,
1522
address))
2585
proc = multiprocessing.Process(target=self.sub_process_main,
2586
args=(request, address))
1523
2587
proc.start()
1524
2588
return proc
1525
2589
1526
2590
1527
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2591
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1528
2592
""" adds a pipe to the MixIn """
2593
1529
2594
def process_request(self, request, client_address):
1530
2595
"""Overrides and wraps the original process_request().
1531
2596
1532
2597
This function creates a new pipe in self.pipe
1533
2598
"""
1534
2599
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1535
2600
1536
2601
proc = MultiprocessingMixIn.process_request(self, request,
1537
2602
client_address)
1538
2603
self.child_pipe.close()
1539
2604
self.add_pipe(parent_pipe, proc)
1540
2605
1541
2606
def add_pipe(self, parent_pipe, proc):
1542
2607
"""Dummy function; override as necessary"""
1543
raise NotImplementedError
2608
raise NotImplementedError()
1544
2609
1545
2610
1546
2611
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1547
socketserver.TCPServer, object):
1548
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1549
2612
socketserver.TCPServer):
2613
"""IPv6-capable TCP server. Accepts None as address and/or port
2614
1550
2615
Attributes:
1551
2616
enabled: Boolean; whether this server is activated yet
1552
2617
interface: None or a network interface name (string)
1553
2618
use_ipv6: Boolean; to use IPv6 or not
1554
2619
"""
2620
1555
2621
def __init__(self, server_address, RequestHandlerClass,
1556
interface=None, use_ipv6=True):
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
"""
1557
2628
self.interface = interface
1558
2629
if use_ipv6:
1559
2630
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.
1560
2658
socketserver.TCPServer.__init__(self, server_address,
1561
2659
RequestHandlerClass)
2660
1562
2661
def server_bind(self):
1563
2662
"""This overrides the normal server_bind() function
1564
2663
to bind to an interface if one was specified, and also NOT to
1565
2664
bind to an address or port if they were not specified."""
2665
global SO_BINDTODEVICE
1566
2666
if self.interface is not None:
1567
2667
if SO_BINDTODEVICE is None:
1568
logger.error("SO_BINDTODEVICE does not exist;"
1569
" cannot bind to interface %s",
1570
self.interface)
1571
else:
1572
try:
1573
self.socket.setsockopt(socket.SOL_SOCKET,
1574
SO_BINDTODEVICE,
1575
str(self.interface
1576
+ '\0'))
1577
except socket.error as error:
1578
if error[0] == errno.EPERM:
1579
logger.error("No permission to"
1580
" bind to interface %s",
1581
self.interface)
1582
elif error[0] == errno.ENOPROTOOPT:
1583
logger.error("SO_BINDTODEVICE not available;"
1584
" cannot bind to interface %s",
1585
self.interface)
1586
else:
1587
raise
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
1588
2688
# Only bind(2) the socket if we really need to.
1589
2689
if self.server_address[0] or self.server_address[1]:
2690
if self.server_address[1]:
2691
self.allow_reuse_address = True
1590
2692
if not self.server_address[0]:
1591
2693
if self.address_family == socket.AF_INET6:
1592
any_address = "::" # in6addr_any
2694
any_address = "::" # in6addr_any
1593
2695
else:
1594
any_address = socket.INADDR_ANY
2696
any_address = "0.0.0.0" # INADDR_ANY
1595
2697
self.server_address = (any_address,
1596
2698
self.server_address[1])
1597
2699
elif not self.server_address[1]:
1598
self.server_address = (self.server_address[0],
1599
0)
2700
self.server_address = (self.server_address[0], 0)
1600
2701
# if self.interface:
1601
2702
# self.server_address = (self.server_address[0],
1602
2703
# 0, # port
1608
2709
1609
2710
class MandosServer(IPv6_TCPServer):
1610
2711
"""Mandos server.
1611
2712
1612
2713
Attributes:
1613
2714
clients: set of Client objects
1614
2715
gnutls_priority GnuTLS priority string
1615
2716
use_dbus: Boolean; to emit D-Bus signals or not
1616
1617
Assumes a gobject.MainLoop event loop.
2717
2718
Assumes a GLib.MainLoop event loop.
1618
2719
"""
2720
1619
2721
def __init__(self, server_address, RequestHandlerClass,
1620
interface=None, use_ipv6=True, clients=None,
1621
gnutls_priority=None, use_dbus=True):
2722
interface=None,
2723
use_ipv6=True,
2724
clients=None,
2725
gnutls_priority=None,
2726
use_dbus=True,
2727
socketfd=None):
1622
2728
self.enabled = False
1623
2729
self.clients = clients
1624
2730
if self.clients is None:
1625
self.clients = set()
2731
self.clients = {}
1626
2732
self.use_dbus = use_dbus
1627
2733
self.gnutls_priority = gnutls_priority
1628
2734
IPv6_TCPServer.__init__(self, server_address,
1629
2735
RequestHandlerClass,
1630
interface = interface,
1631
use_ipv6 = use_ipv6)
2736
interface=interface,
2737
use_ipv6=use_ipv6,
2738
socketfd=socketfd)
2739
1632
2740
def server_activate(self):
1633
2741
if self.enabled:
1634
2742
return socketserver.TCPServer.server_activate(self)
1635
2743
1636
2744
def enable(self):
1637
2745
self.enabled = True
1638
2746
1639
2747
def add_pipe(self, parent_pipe, proc):
1640
2748
# Call "handle_ipc" for both data and EOF events
1641
gobject.io_add_watch(parent_pipe.fileno(),
1642
gobject.IO_IN | gobject.IO_HUP,
1643
functools.partial(self.handle_ipc,
1644
parent_pipe =
1645
parent_pipe,
1646
proc = proc))
1647
1648
def handle_ipc(self, source, condition, parent_pipe=None,
1649
proc = None, client_object=None):
1650
condition_names = {
1651
gobject.IO_IN: "IN", # There is data to read.
1652
gobject.IO_OUT: "OUT", # Data can be written (without
1653
# blocking).
1654
gobject.IO_PRI: "PRI", # There is urgent data to read.
1655
gobject.IO_ERR: "ERR", # Error condition.
1656
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1657
# broken, usually for pipes and
1658
# sockets).
1659
}
1660
conditions_string = ' | '.join(name
1661
for cond, name in
1662
condition_names.iteritems()
1663
if cond & condition)
1664
# error or the other end of multiprocessing.Pipe has closed
1665
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
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):
2760
# error, or the other end of multiprocessing.Pipe has closed
2761
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2762
# Wait for other process to exit
1666
2763
proc.join()
1667
2764
return False
1668
2765
1669
2766
# Read a request from the child
1670
2767
request = parent_pipe.recv()
1671
2768
command = request[0]
1672
1673
if command == 'init':
1674
fpr = request[1]
1675
address = request[2]
1676
1677
for c in self.clients:
1678
if c.fingerprint == fpr:
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:
1679
2783
client = c
1680
2784
break
1681
2785
else:
1682
logger.info("Client not found for fingerprint: %s, ad"
1683
"dress: %s", fpr, address)
2786
log.info("Client not found for key ID: %s, address:"
2787
" %s", key_id or fpr, address)
1684
2788
if self.use_dbus:
1685
2789
# Emit D-Bus signal
1686
mandos_dbus_service.ClientNotFound(fpr,
2790
mandos_dbus_service.ClientNotFound(key_id or fpr,
1687
2791
address[0])
1688
2792
parent_pipe.send(False)
1689
2793
return False
1690
1691
gobject.io_add_watch(parent_pipe.fileno(),
1692
gobject.IO_IN | gobject.IO_HUP,
1693
functools.partial(self.handle_ipc,
1694
parent_pipe =
1695
parent_pipe,
1696
proc = proc,
1697
client_object =
1698
client))
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))
1699
2802
parent_pipe.send(True)
1700
2803
# remove the old hook in favor of the new above hook on
1701
2804
# same fileno
1702
2805
return False
1703
if command == 'funcall':
2806
if command == "funcall":
1704
2807
funcname = request[1]
1705
2808
args = request[2]
1706
2809
kwargs = request[3]
1707
1708
parent_pipe.send(('data', getattr(client_object,
2810
2811
parent_pipe.send(("data", getattr(client_object,
1709
2812
funcname)(*args,
1710
**kwargs)))
1711
1712
if command == 'getattr':
2813
**kwargs)))
2814
2815
if command == "getattr":
1713
2816
attrname = request[1]
1714
if callable(client_object.__getattribute__(attrname)):
1715
parent_pipe.send(('function',))
2817
if isinstance(client_object.__getattribute__(attrname),
2818
collections.abc.Callable):
2819
parent_pipe.send(("function", ))
1716
2820
else:
1717
parent_pipe.send(('data', client_object
1718
.__getattribute__(attrname)))
1719
1720
if command == 'setattr':
2821
parent_pipe.send((
2822
"data", client_object.__getattribute__(attrname)))
2823
2824
if command == "setattr":
1721
2825
attrname = request[1]
1722
2826
value = request[2]
1723
2827
setattr(client_object, attrname, value)
1724
2828
1725
2829
return True
1726
2830
1727
2831
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
1728
2933
def string_to_delta(interval):
1729
2934
"""Parse a string and return a datetime.timedelta
1730
1731
>>> string_to_delta('7d')
1732
datetime.timedelta(7)
1733
>>> string_to_delta('60s')
1734
datetime.timedelta(0, 60)
1735
>>> string_to_delta('60m')
1736
datetime.timedelta(0, 3600)
1737
>>> string_to_delta('24h')
1738
datetime.timedelta(1)
1739
>>> string_to_delta('1w')
1740
datetime.timedelta(7)
1741
>>> string_to_delta('5m 30s')
1742
datetime.timedelta(0, 330)
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
1743
2948
"""
2949
2950
try:
2951
return rfc3339_duration_to_delta(interval)
2952
except ValueError:
2953
pass
2954
1744
2955
timevalue = datetime.timedelta(0)
1745
2956
for s in interval.split():
1746
2957
try:
1747
suffix = unicode(s[-1])
2958
suffix = s[-1]
1748
2959
value = int(s[:-1])
1749
2960
if suffix == "d":
1750
2961
delta = datetime.timedelta(value)
1757
2968
elif suffix == "w":
1758
2969
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1759
2970
else:
1760
raise ValueError("Unknown suffix %r" % suffix)
1761
except (ValueError, IndexError) as e:
2971
raise ValueError("Unknown suffix {!r}".format(suffix))
2972
except IndexError as e:
1762
2973
raise ValueError(*(e.args))
1763
2974
timevalue += delta
1764
2975
return timevalue
1765
2976
1766
2977
1767
def if_nametoindex(interface):
1768
"""Call the C function if_nametoindex(), or equivalent
1769
1770
Note: This function cannot accept a unicode string."""
1771
global if_nametoindex
1772
try:
1773
if_nametoindex = (ctypes.cdll.LoadLibrary
1774
(ctypes.util.find_library("c"))
1775
.if_nametoindex)
1776
except (OSError, AttributeError):
1777
logger.warning("Doing if_nametoindex the hard way")
1778
def if_nametoindex(interface):
1779
"Get an interface index the hard way, i.e. using fcntl()"
1780
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1781
with contextlib.closing(socket.socket()) as s:
1782
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1783
struct.pack(str("16s16x"),
1784
interface))
1785
interface_index = struct.unpack(str("I"),
1786
ifreq[16:20])[0]
1787
return interface_index
1788
return if_nametoindex(interface)
1789
1790
1791
def daemon(nochdir = False, noclose = False):
2978
def daemon(nochdir=False, noclose=False):
1792
2979
"""See daemon(3). Standard BSD Unix function.
1793
2980
1794
2981
This should really exist as os.daemon, but it doesn't (yet)."""
1795
2982
if os.fork():
1796
2983
sys.exit()
1801
2988
sys.exit()
1802
2989
if not noclose:
1803
2990
# Close all standard open file descriptors
1804
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2991
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1805
2992
if not stat.S_ISCHR(os.fstat(null).st_mode):
1806
2993
raise OSError(errno.ENODEV,
1807
"%s not a character device"
1808
% os.path.devnull)
2994
"{} not a character device"
2995
.format(os.devnull))
1809
2996
os.dup2(null, sys.stdin.fileno())
1810
2997
os.dup2(null, sys.stdout.fileno())
1811
2998
os.dup2(null, sys.stderr.fileno())
1814
3001
1815
3002
1816
3003
def main():
1817
3004
1818
3005
##################################################################
1819
3006
# Parsing of options, both command line and config file
1820
3007
1821
3008
parser = argparse.ArgumentParser()
1822
3009
parser.add_argument("-v", "--version", action="version",
1823
version = "%%(prog)s %s" % version,
3010
version="%(prog)s {}".format(version),
1824
3011
help="show version number and exit")
1825
3012
parser.add_argument("-i", "--interface", metavar="IF",
1826
3013
help="Bind to interface IF")
1832
3019
help="Run self-test")
1833
3020
parser.add_argument("--debug", action="store_true",
1834
3021
help="Debug mode; run in foreground and log"
1835
" to terminal")
3022
" to terminal", default=None)
1836
3023
parser.add_argument("--debuglevel", metavar="LEVEL",
1837
3024
help="Debug level for stdout output")
1838
3025
parser.add_argument("--priority", help="GnuTLS"
1845
3032
" files")
1846
3033
parser.add_argument("--no-dbus", action="store_false",
1847
3034
dest="use_dbus", help="Do not provide D-Bus"
1848
" system bus interface")
3035
" system bus interface", default=None)
1849
3036
parser.add_argument("--no-ipv6", action="store_false",
1850
dest="use_ipv6", help="Do not use IPv6")
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
1851
3053
options = parser.parse_args()
1852
1853
if options.check:
1854
import doctest
1855
doctest.testmod()
1856
sys.exit()
1857
3054
1858
3055
# Default values for config file for server-global settings
1859
server_defaults = { "interface": "",
1860
"address": "",
1861
"port": "",
1862
"debug": "False",
1863
"priority":
1864
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1865
"servicename": "Mandos",
1866
"use_dbus": "True",
1867
"use_ipv6": "True",
1868
"debuglevel": "",
1869
}
1870
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
1871
3079
# Parse config file for server-global settings
1872
server_config = configparser.SafeConfigParser(server_defaults)
3080
server_config = configparser.ConfigParser(server_defaults)
1873
3081
del server_defaults
1874
server_config.read(os.path.join(options.configdir,
1875
"mandos.conf"))
1876
# Convert the SafeConfigParser object to a dict
3082
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3083
# Convert the ConfigParser object to a dict
1877
3084
server_settings = server_config.defaults()
1878
3085
# Use the appropriate methods on the non-string config options
1879
for option in ("debug", "use_dbus", "use_ipv6"):
3086
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3087
"foreground", "zeroconf"):
1880
3088
server_settings[option] = server_config.getboolean("DEFAULT",
1881
3089
option)
1882
3090
if server_settings["port"]:
1883
3091
server_settings["port"] = server_config.getint("DEFAULT",
1884
3092
"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"])
1885
3102
del server_config
1886
3103
1887
3104
# Override the settings from the config file with command line
1888
3105
# options, if set.
1889
3106
for option in ("interface", "address", "port", "debug",
1890
"priority", "servicename", "configdir",
1891
"use_dbus", "use_ipv6", "debuglevel"):
3107
"priority", "servicename", "configdir", "use_dbus",
3108
"use_ipv6", "debuglevel", "restore", "statedir",
3109
"socket", "foreground", "zeroconf"):
1892
3110
value = getattr(options, option)
1893
3111
if value is not None:
1894
3112
server_settings[option] = value
1895
3113
del options
1896
3114
# Force all strings to be unicode
1897
3115
for option in server_settings.keys():
1898
if type(server_settings[option]) is str:
1899
server_settings[option] = unicode(server_settings[option])
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
1900
3126
# Now we have our good server settings in "server_settings"
1901
3127
1902
3128
##################################################################
1903
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
1904
3135
# For convenience
1905
3136
debug = server_settings["debug"]
1906
3137
debuglevel = server_settings["debuglevel"]
1907
3138
use_dbus = server_settings["use_dbus"]
1908
3139
use_ipv6 = server_settings["use_ipv6"]
1909
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
1910
3154
if server_settings["servicename"] != "Mandos":
1911
syslogger.setFormatter(logging.Formatter
1912
('Mandos (%s) [%%(process)d]:'
1913
' %%(levelname)s: %%(message)s'
1914
% server_settings["servicename"]))
1915
3155
syslogger.setFormatter(
3156
logging.Formatter("Mandos ({}) [%(process)d]:"
3157
" %(levelname)s: %(message)s".format(
3158
server_settings["servicename"])))
3159
1916
3160
# Parse config file with clients
1917
client_defaults = { "timeout": "5m",
1918
"extended_timeout": "15m",
1919
"interval": "2m",
1920
"checker": "fping -q -- %%(host)s",
1921
"host": "",
1922
"approval_delay": "0s",
1923
"approval_duration": "1s",
1924
}
1925
client_config = configparser.SafeConfigParser(client_defaults)
3161
client_config = configparser.ConfigParser(Client.client_defaults)
1926
3162
client_config.read(os.path.join(server_settings["configdir"],
1927
3163
"clients.conf"))
1928
3164
1929
3165
global mandos_dbus_service
1930
3166
mandos_dbus_service = None
1931
1932
tcp_server = MandosServer((server_settings["address"],
1933
server_settings["port"]),
1934
ClientHandler,
1935
interface=(server_settings["interface"]
1936
or None),
1937
use_ipv6=use_ipv6,
1938
gnutls_priority=
1939
server_settings["priority"],
1940
use_dbus=use_dbus)
1941
if not debug:
1942
pidfilename = "/var/run/mandos.pid"
1943
try:
1944
pidfile = open(pidfilename, "w")
1945
except IOError:
1946
logger.error("Could not open file %r", pidfilename)
1947
1948
try:
1949
uid = pwd.getpwnam("_mandos").pw_uid
1950
gid = pwd.getpwnam("_mandos").pw_gid
1951
except KeyError:
1952
try:
1953
uid = pwd.getpwnam("mandos").pw_uid
1954
gid = pwd.getpwnam("mandos").pw_gid
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
1955
3197
except KeyError:
1956
try:
1957
uid = pwd.getpwnam("nobody").pw_uid
1958
gid = pwd.getpwnam("nobody").pw_gid
1959
except KeyError:
1960
uid = 65534
1961
gid = 65534
3198
continue
3199
else:
3200
uid = 65534
3201
gid = 65534
1962
3202
try:
1963
3203
os.setgid(gid)
1964
3204
os.setuid(uid)
3205
log.debug("Did setuid/setgid to %s:%s", uid, gid)
1965
3206
except OSError as error:
1966
if error[0] != errno.EPERM:
1967
raise error
1968
1969
if not debug and not debuglevel:
1970
syslogger.setLevel(logging.WARNING)
1971
console.setLevel(logging.WARNING)
1972
if debuglevel:
1973
level = getattr(logging, debuglevel.upper())
1974
syslogger.setLevel(level)
1975
console.setLevel(level)
1976
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
1977
3212
if debug:
1978
3213
# Enable all possible GnuTLS debugging
1979
3214
1980
3215
# "Use a log level over 10 to enable all debugging options."
1981
3216
# - GnuTLS manual
1982
gnutls.library.functions.gnutls_global_set_log_level(11)
1983
1984
@gnutls.library.types.gnutls_log_func
3217
gnutls.global_set_log_level(11)
3218
3219
@gnutls.log_func
1985
3220
def debug_gnutls(level, string):
1986
logger.debug("GnuTLS: %s", string[:-1])
1987
1988
(gnutls.library.functions
1989
.gnutls_global_set_log_function(debug_gnutls))
1990
3221
log.debug("GnuTLS: %s",
3222
string[:-1].decode("utf-8", errors="replace"))
3223
3224
gnutls.global_set_log_function(debug_gnutls)
3225
1991
3226
# Redirect stdin so all checkers get /dev/null
1992
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3227
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1993
3228
os.dup2(null, sys.stdin.fileno())
1994
3229
if null > 2:
1995
3230
os.close(null)
1996
else:
1997
# No console logging
1998
logger.removeHandler(console)
1999
3231
2000
3232
# Need to fork before connecting to D-Bus
2001
if not debug:
3233
if not foreground:
2002
3234
# Close all input and output, do double fork, etc.
2003
3235
daemon()
2004
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
2005
3242
global main_loop
2006
3243
# From the Avahi example code
2007
DBusGMainLoop(set_as_default=True )
2008
main_loop = gobject.MainLoop()
3244
DBusGMainLoop(set_as_default=True)
3245
main_loop = GLib.MainLoop()
2009
3246
bus = dbus.SystemBus()
2010
3247
# End of Avahi example code
2011
3248
if use_dbus:
2012
3249
try:
2013
3250
bus_name = dbus.service.BusName("se.recompile.Mandos",
2014
bus, do_not_queue=True)
2015
old_bus_name = (dbus.service.BusName
2016
("se.bsnet.fukt.Mandos", bus,
2017
do_not_queue=True))
2018
except dbus.exceptions.NameExistsException as e:
2019
logger.error(unicode(e) + ", disabling D-Bus")
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)
2020
3258
use_dbus = False
2021
3259
server_settings["use_dbus"] = False
2022
3260
tcp_server.use_dbus = False
2023
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2024
service = AvahiService(name = server_settings["servicename"],
2025
servicetype = "_mandos._tcp",
2026
protocol = protocol, bus = bus)
2027
if server_settings["interface"]:
2028
service.interface = (if_nametoindex
2029
(str(server_settings["interface"])))
2030
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
2031
3272
global multiprocessing_manager
2032
3273
multiprocessing_manager = multiprocessing.Manager()
2033
3274
2034
3275
client_class = Client
2035
3276
if use_dbus:
2036
client_class = functools.partial(ClientDBusTransitional,
2037
bus = bus)
2038
def client_config_items(config, section):
2039
special_settings = {
2040
"approved_by_default":
2041
lambda: config.getboolean(section,
2042
"approved_by_default"),
2043
}
2044
for name, value in config.items(section):
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)
2045
3405
try:
2046
yield (name, special_settings[name]())
2047
except KeyError:
2048
yield (name, value)
2049
2050
tcp_server.clients.update(set(
2051
client_class(name = section,
2052
config= dict(client_config_items(
2053
client_config, section)))
2054
for section in client_config.sections()))
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
2055
3431
if not tcp_server.clients:
2056
logger.warning("No clients defined")
2057
2058
if not debug:
2059
try:
2060
with pidfile:
2061
pid = os.getpid()
2062
pidfile.write(str(pid) + "\n".encode("utf-8"))
2063
del pidfile
2064
except IOError:
2065
logger.error("Could not write to file %r with PID %d",
2066
pidfilename, pid)
2067
except NameError:
2068
# "pidfile" was never created
2069
pass
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
2070
3444
del pidfilename
2071
2072
signal.signal(signal.SIGINT, signal.SIG_IGN)
2073
2074
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2075
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2076
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
2077
3450
if use_dbus:
2078
class MandosDBusService(dbus.service.Object):
3451
3452
@alternate_dbus_interfaces(
3453
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3454
class MandosDBusService(DBusObjectWithObjectManager):
2079
3455
"""A D-Bus proxy object"""
3456
2080
3457
def __init__(self):
2081
3458
dbus.service.Object.__init__(self, bus, "/")
3459
2082
3460
_interface = "se.recompile.Mandos"
2083
3461
2084
3462
@dbus.service.signal(_interface, signature="o")
2085
3463
def ClientAdded(self, objpath):
2086
3464
"D-Bus signal"
2087
3465
pass
2088
3466
2089
3467
@dbus.service.signal(_interface, signature="ss")
2090
def ClientNotFound(self, fingerprint, address):
3468
def ClientNotFound(self, key_id, address):
2091
3469
"D-Bus signal"
2092
3470
pass
2093
3471
3472
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3473
"true"})
2094
3474
@dbus.service.signal(_interface, signature="os")
2095
3475
def ClientRemoved(self, objpath, name):
2096
3476
"D-Bus signal"
2097
3477
pass
2098
3478
3479
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3480
"true"})
2099
3481
@dbus.service.method(_interface, out_signature="ao")
2100
3482
def GetAllClients(self):
2101
3483
"D-Bus method"
2102
return dbus.Array(c.dbus_object_path
2103
for c in tcp_server.clients)
2104
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
3489
@dbus.service.method(_interface,
2106
3490
out_signature="a{oa{sv}}")
2107
3491
def GetAllClientsWithProperties(self):
2108
3492
"D-Bus method"
2109
3493
return dbus.Dictionary(
2110
((c.dbus_object_path, c.GetAll(""))
2111
for c in tcp_server.clients),
3494
{c.dbus_object_path: c.GetAll(
3495
"se.recompile.Mandos.Client")
3496
for c in tcp_server.clients.values()},
2112
3497
signature="oa{sv}")
2113
3498
2114
3499
@dbus.service.method(_interface, in_signature="o")
2115
3500
def RemoveClient(self, object_path):
2116
3501
"D-Bus method"
2117
for c in tcp_server.clients:
3502
for c in tcp_server.clients.values():
2118
3503
if c.dbus_object_path == object_path:
2119
tcp_server.clients.remove(c)
3504
del tcp_server.clients[c.name]
2120
3505
c.remove_from_connection()
2121
# Don't signal anything except ClientRemoved
3506
# Don't signal the disabling
2122
3507
c.disable(quiet=True)
2123
# Emit D-Bus signal
2124
self.ClientRemoved(object_path, c.name)
3508
# Emit D-Bus signal for removal
3509
self.client_removed_signal(c)
2125
3510
return
2126
3511
raise KeyError(object_path)
2127
3512
2128
3513
del _interface
2129
2130
class MandosDBusServiceTransitional(MandosDBusService):
2131
__metaclass__ = AlternateDBusNamesMetaclass
2132
mandos_dbus_service = MandosDBusServiceTransitional()
2133
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
2134
3558
def cleanup():
2135
3559
"Cleanup function; run on exit"
2136
service.cleanup()
2137
2138
multiprocessing.active_children()
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
3622
while tcp_server.clients:
2140
client = tcp_server.clients.pop()
3623
name, client = tcp_server.clients.popitem()
2141
3624
if use_dbus:
2142
3625
client.remove_from_connection()
2143
client.disable_hook = None
2144
# Don't signal anything except ClientRemoved
3626
# Don't signal the disabling
2145
3627
client.disable(quiet=True)
3628
# Emit D-Bus signal for removal
2146
3629
if use_dbus:
2147
# Emit D-Bus signal
2148
mandos_dbus_service.ClientRemoved(client
2149
.dbus_object_path,
2150
client.name)
2151
3630
mandos_dbus_service.client_removed_signal(client)
3631
client_settings.clear()
3632
2152
3633
atexit.register(cleanup)
2153
2154
for client in tcp_server.clients:
3634
3635
for client in tcp_server.clients.values():
2155
3636
if use_dbus:
2156
# Emit D-Bus signal
2157
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2158
client.enable()
2159
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
2160
3643
tcp_server.enable()
2161
3644
tcp_server.server_activate()
2162
3645
2163
3646
# Find out what port we got
2164
service.port = tcp_server.socket.getsockname()[1]
3647
if zeroconf:
3648
service.port = tcp_server.socket.getsockname()[1]
2165
3649
if use_ipv6:
2166
logger.info("Now listening on address %r, port %d,"
2167
" flowinfo %d, scope_id %d"
2168
% tcp_server.socket.getsockname())
3650
log.info("Now listening on address %r, port %d, flowinfo %d,"
3651
" scope_id %d", *tcp_server.socket.getsockname())
2169
3652
else: # IPv4
2170
logger.info("Now listening on address %r, port %d"
2171
% tcp_server.socket.getsockname())
2172
2173
#service.interface = tcp_server.socket.getsockname()[3]
2174
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
2175
3658
try:
2176
# From the Avahi example code
2177
try:
2178
service.activate()
2179
except dbus.exceptions.DBusException as error:
2180
logger.critical("DBusException: %s", error)
2181
cleanup()
2182
sys.exit(1)
2183
# End of Avahi example code
2184
2185
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2186
lambda *args, **kwargs:
2187
(tcp_server.handle_request
2188
(*args[2:], **kwargs) or True))
2189
2190
logger.debug("Starting main loop")
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")
2191
3676
main_loop.run()
2192
3677
except AvahiError as error:
2193
logger.critical("AvahiError: %s", error)
3678
log.critical("Avahi Error", exc_info=error)
2194
3679
cleanup()
2195
3680
sys.exit(1)
2196
3681
except KeyboardInterrupt:
2197
3682
if debug:
2198
3683
print("", file=sys.stderr)
2199
logger.debug("Server received KeyboardInterrupt")
2200
logger.debug("Server exiting")
3684
log.debug("Server received KeyboardInterrupt")
3685
log.debug("Server exiting")
2201
3686
# Must run before the D-Bus bus name gets deregistered
2202
3687
cleanup()
2203
3688
2204
2205
if __name__ == '__main__':
2206
main()
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:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0