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- Committer: Teddy Hogeborn
- Date: 2024-09-08 07:15:13 UTC
- Revision ID: teddy@recompile.se-20240908071513-2jnx7ja8hlct42hl
Minor fix for manual Makefile uninstallations
If the Mandos systemd unit file was not installed, it was still
removed by the "purge-server" target. If systemd is not installed,
this could mean removal of "mandos.service" from the root directory.
(Note: this was *not* used by the Debian package as a method of
uninstallation; this was only ever done by the Makefile if "make
purge-server" was called by hand. And a "mandos.service" file was
presumably also unlikely to exist in the root directory.)
* Makefile (purge-server): Only remove systemd service file
"mandos.service" if the same conditions exist which permitted its
initial installation in the "install-server" target.
If the Mandos systemd unit file was not installed, it was still
removed by the "purge-server" target. If systemd is not installed,
this could mean removal of "mandos.service" from the root directory.
(Note: this was *not* used by the Debian package as a method of
uninstallation; this was only ever done by the Makefile if "make
purge-server" was called by hand. And a "mandos.service" file was
presumably also unlikely to exist in the root directory.)
* Makefile (purge-server): Only remove systemd service file
"mandos.service" if the same conditions exist which permitted its
initial installation in the "install-server" target.
- files added:
- DBUS-API
- debian/source
- 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 © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 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
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
#
33
34
from __future__ import division, with_statement, absolute_import
35
36
import SocketServer as socketserver
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
32
# Contact the authors at <mandos@recompile.se>.
33
#
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
36
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
37
51
import socket
38
import optparse
39
52
import datetime
40
53
import errno
41
import gnutls.crypto
42
import gnutls.connection
43
import gnutls.errors
44
import gnutls.library.functions
45
import gnutls.library.constants
46
import gnutls.library.types
47
import ConfigParser as configparser
48
import sys
54
try:
55
import ConfigParser as configparser
56
except ImportError:
57
import configparser
49
58
import re
50
import os
51
59
import signal
52
60
import subprocess
53
61
import atexit
54
62
import stat
55
import logging
56
63
import logging.handlers
57
64
import pwd
58
from contextlib import closing
65
import contextlib
59
66
import struct
60
67
import fcntl
61
68
import functools
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
73
import multiprocessing
74
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
80
import random
81
import shlex
62
82
63
83
import dbus
64
84
import dbus.service
65
import gobject
66
import avahi
85
import gi
86
from gi.repository import GLib
67
87
from dbus.mainloop.glib import DBusGMainLoop
68
88
import ctypes
69
89
import ctypes.util
70
90
import xml.dom.minidom
71
91
import inspect
72
92
73
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:
74
122
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
75
123
except AttributeError:
76
124
try:
125
# This is where SO_BINDTODEVICE was up to and including Python
126
# 2.6, and also 3.2:
77
127
from IN import SO_BINDTODEVICE
78
128
except ImportError:
79
SO_BINDTODEVICE = None
80
81
82
version = "1.0.12"
83
84
logger = logging.Logger(u'mandos')
85
syslogger = (logging.handlers.SysLogHandler
86
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
87
address = "/dev/log"))
88
syslogger.setFormatter(logging.Formatter
89
(u'Mandos [%(process)d]: %(levelname)s:'
90
u' %(message)s'))
91
logger.addHandler(syslogger)
92
93
console = logging.StreamHandler()
94
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
95
u' %(levelname)s:'
96
u' %(message)s'))
97
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
98
331
99
332
class AvahiError(Exception):
100
333
def __init__(self, value, *args, **kwargs):
101
334
self.value = value
102
super(AvahiError, self).__init__(value, *args, **kwargs)
103
def __unicode__(self):
104
return unicode(repr(self.value))
335
return super(AvahiError, self).__init__(value, *args,
336
**kwargs)
337
105
338
106
339
class AvahiServiceError(AvahiError):
107
340
pass
108
341
342
109
343
class AvahiGroupError(AvahiError):
110
344
pass
111
345
112
346
113
class AvahiService(object):
347
class AvahiService:
114
348
"""An Avahi (Zeroconf) service.
115
349
116
350
Attributes:
117
351
interface: integer; avahi.IF_UNSPEC or an interface index.
118
352
Used to optionally bind to the specified interface.
119
name: string; Example: u'Mandos'
120
type: string; Example: u'_mandos._tcp'.
121
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>
122
356
port: integer; what port to announce
123
357
TXT: list of strings; TXT record for the service
124
358
domain: string; Domain to publish on, default to .local if empty.
130
364
server: D-Bus Server
131
365
bus: dbus.SystemBus()
132
366
"""
133
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
134
servicetype = None, port = None, TXT = None,
135
domain = u"", host = u"", max_renames = 32768,
136
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):
137
379
self.interface = interface
138
380
self.name = name
139
381
self.type = servicetype
147
389
self.group = None # our entry group
148
390
self.server = None
149
391
self.bus = bus
150
def rename(self):
392
self.entry_group_state_changed_match = None
393
394
def rename(self, remove=True):
151
395
"""Derived from the Avahi example code"""
152
396
if self.rename_count >= self.max_renames:
153
logger.critical(u"No suitable Zeroconf service name found"
154
u" after %i retries, exiting.",
155
self.rename_count)
156
raise AvahiServiceError(u"Too many renames")
157
self.name = self.server.GetAlternativeServiceName(self.name)
158
logger.info(u"Changing Zeroconf service name to %r ...",
159
unicode(self.name))
160
syslogger.setFormatter(logging.Formatter
161
(u'Mandos (%s) [%%(process)d]:'
162
u' %%(levelname)s: %%(message)s'
163
% self.name))
164
self.remove()
165
self.add()
397
log.critical("No suitable Zeroconf service name found"
398
" after %i retries, exiting.",
399
self.rename_count)
400
raise AvahiServiceError("Too many renames")
401
self.name = str(
402
self.server.GetAlternativeServiceName(self.name))
166
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
167
420
def remove(self):
168
421
"""Derived from the Avahi example code"""
422
if self.entry_group_state_changed_match is not None:
423
self.entry_group_state_changed_match.remove()
424
self.entry_group_state_changed_match = None
169
425
if self.group is not None:
170
426
self.group.Reset()
427
171
428
def add(self):
172
429
"""Derived from the Avahi example code"""
430
self.remove()
173
431
if self.group is None:
174
432
self.group = dbus.Interface(
175
433
self.bus.get_object(avahi.DBUS_NAME,
176
434
self.server.EntryGroupNew()),
177
435
avahi.DBUS_INTERFACE_ENTRY_GROUP)
178
self.group.connect_to_signal('StateChanged',
179
self
180
.entry_group_state_changed)
181
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
182
self.name, self.type)
436
self.entry_group_state_changed_match = (
437
self.group.connect_to_signal(
438
"StateChanged", self.entry_group_state_changed))
439
log.debug("Adding Zeroconf service '%s' of type '%s' ...",
440
self.name, self.type)
183
441
self.group.AddService(
184
442
self.interface,
185
443
self.protocol,
189
447
dbus.UInt16(self.port),
190
448
avahi.string_array_to_txt_array(self.TXT))
191
449
self.group.Commit()
450
192
451
def entry_group_state_changed(self, state, error):
193
452
"""Derived from the Avahi example code"""
194
logger.debug(u"Avahi state change: %i", state)
195
453
log.debug("Avahi entry group state change: %i", state)
454
196
455
if state == avahi.ENTRY_GROUP_ESTABLISHED:
197
logger.debug(u"Zeroconf service established.")
456
log.debug("Zeroconf service established.")
198
457
elif state == avahi.ENTRY_GROUP_COLLISION:
199
logger.warning(u"Zeroconf service name collision.")
458
log.info("Zeroconf service name collision.")
200
459
self.rename()
201
460
elif state == avahi.ENTRY_GROUP_FAILURE:
202
logger.critical(u"Avahi: Error in group state changed %s",
203
unicode(error))
204
raise AvahiGroupError(u"State changed: %s"
205
% unicode(error))
461
log.critical("Avahi: Error in group state changed %s",
462
str(error))
463
raise AvahiGroupError("State changed: {!s}".format(error))
464
206
465
def cleanup(self):
207
466
"""Derived from the Avahi example code"""
208
467
if self.group is not None:
209
self.group.Free()
468
try:
469
self.group.Free()
470
except (dbus.exceptions.UnknownMethodException,
471
dbus.exceptions.DBusException):
472
pass
210
473
self.group = None
211
def server_state_changed(self, state):
474
self.remove()
475
476
def server_state_changed(self, state, error=None):
212
477
"""Derived from the Avahi example code"""
213
if state == avahi.SERVER_COLLISION:
214
logger.error(u"Zeroconf server name collision")
215
self.remove()
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
}
485
if state in bad_states:
486
if bad_states[state] is not None:
487
if error is None:
488
log.error(bad_states[state])
489
else:
490
log.error(bad_states[state] + ": %r", error)
491
self.cleanup()
216
492
elif state == avahi.SERVER_RUNNING:
217
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)
504
else:
505
if error is None:
506
log.debug("Unknown state: %r", state)
507
else:
508
log.debug("Unknown state: %r: %r", state, error)
509
218
510
def activate(self):
219
511
"""Derived from the Avahi example code"""
220
512
if self.server is None:
221
513
self.server = dbus.Interface(
222
514
self.bus.get_object(avahi.DBUS_NAME,
223
avahi.DBUS_PATH_SERVER),
515
avahi.DBUS_PATH_SERVER,
516
follow_name_owner_changes=True),
224
517
avahi.DBUS_INTERFACE_SERVER)
225
self.server.connect_to_signal(u"StateChanged",
226
self.server_state_changed)
518
self.server.connect_to_signal("StateChanged",
519
self.server_state_changed)
227
520
self.server_state_changed(self.server.GetState())
228
521
229
522
230
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:
231
875
"""A representation of a client host served by this server.
232
876
233
877
Attributes:
878
approved: bool(); None if not yet approved/disapproved
879
approval_delay: datetime.timedelta(); Time to wait for approval
880
approval_duration: datetime.timedelta(); Duration of one approval
881
checker: multiprocessing.Process(); a running checker process used
882
to see if the client lives. None if no process is
883
running.
884
checker_callback_tag: a GLib event source tag, or None
885
checker_command: string; External command which is run to check
886
if client lives. %() expansions are done at
887
runtime with vars(self) as dict, so that for
888
instance %(name)s can be used in the command.
889
checker_initiator_tag: a GLib event source tag, or None
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
893
current_checker_command: string; current running checker_command
894
disable_initiator_tag: a GLib event source tag, or None
895
enabled: bool()
896
fingerprint: string (40 or 32 hexadecimal digits); used to
897
uniquely identify an OpenPGP client
898
key_id: string (64 hexadecimal digits); used to uniquely identify
899
a client using raw public keys
900
host: string; available for use by the checker command
901
interval: datetime.timedelta(); How often to start a new checker
902
last_approval_request: datetime.datetime(); (UTC) or None
903
last_checked_ok: datetime.datetime(); (UTC) or None
904
last_checker_status: integer between 0 and 255 reflecting exit
905
status of last checker. -1 reflects crashed
906
checker, -2 means no checker completed yet.
907
last_checker_signal: The signal which killed the last checker, if
908
last_checker_status is -1
909
last_enabled: datetime.datetime(); (UTC) or None
234
910
name: string; from the config file, used in log messages and
235
911
D-Bus identifiers
236
fingerprint: string (40 or 32 hexadecimal digits); used to
237
uniquely identify the client
238
912
secret: bytestring; sent verbatim (over TLS) to client
239
host: string; available for use by the checker command
240
created: datetime.datetime(); (UTC) object creation
241
last_enabled: datetime.datetime(); (UTC)
242
enabled: bool()
243
last_checked_ok: datetime.datetime(); (UTC) or None
244
913
timeout: datetime.timedelta(); How long from last_checked_ok
245
until this client is invalid
246
interval: datetime.timedelta(); How often to start a new checker
247
disable_hook: If set, called by disable() as disable_hook(self)
248
checker: subprocess.Popen(); a running checker process used
249
to see if the client lives.
250
'None' if no process is running.
251
checker_initiator_tag: a gobject event source tag, or None
252
disable_initiator_tag: - '' -
253
checker_callback_tag: - '' -
254
checker_command: string; External command which is run to check if
255
client lives. %() expansions are done at
256
runtime with vars(self) as dict, so that for
257
instance %(name)s can be used in the command.
258
current_checker_command: string; current running checker_command
914
until this client is disabled
915
extended_timeout: extra long timeout when secret has been sent
916
runtime_expansions: Allowed attributes for runtime expansion.
917
expires: datetime.datetime(); time (UTC) when a client will be
918
disabled, or None
919
server_settings: The server_settings dict from main()
259
920
"""
260
921
922
runtime_expansions = ("approval_delay", "approval_duration",
923
"created", "enabled", "expires", "key_id",
924
"fingerprint", "host", "interval",
925
"last_approval_request", "last_checked_ok",
926
"last_enabled", "name", "timeout")
927
client_defaults = {
928
"timeout": "PT5M",
929
"extended_timeout": "PT15M",
930
"interval": "PT2M",
931
"checker": "fping -q -- %%(host)s",
932
"host": "",
933
"approval_delay": "PT0S",
934
"approval_duration": "PT1S",
935
"approved_by_default": "True",
936
"enabled": "True",
937
}
938
261
939
@staticmethod
262
def _timedelta_to_milliseconds(td):
263
"Convert a datetime.timedelta() to milliseconds"
264
return ((td.days * 24 * 60 * 60 * 1000)
265
+ (td.seconds * 1000)
266
+ (td.microseconds // 1000))
267
268
def timeout_milliseconds(self):
269
"Return the 'timeout' attribute in milliseconds"
270
return self._timedelta_to_milliseconds(self.timeout)
271
272
def interval_milliseconds(self):
273
"Return the 'interval' attribute in milliseconds"
274
return self._timedelta_to_milliseconds(self.interval)
275
276
def __init__(self, name = None, disable_hook=None, config=None):
277
"""Note: the 'checker' key in 'config' sets the
278
'checker_command' attribute and *not* the 'checker'
279
attribute."""
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):
280
1000
self.name = name
281
if config is None:
282
config = {}
283
logger.debug(u"Creating client %r", self.name)
284
# Uppercase and remove spaces from fingerprint for later
285
# comparison purposes with return value from the fingerprint()
286
# function
287
self.fingerprint = (config[u"fingerprint"].upper()
288
.replace(u" ", u""))
289
logger.debug(u" Fingerprint: %s", self.fingerprint)
290
if u"secret" in config:
291
self.secret = config[u"secret"].decode(u"base64")
292
elif u"secfile" in config:
293
with closing(open(os.path.expanduser
294
(os.path.expandvars
295
(config[u"secfile"])),
296
"rb")) as secfile:
297
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)
298
1014
else:
299
raise TypeError(u"No secret or secfile for client %s"
300
% self.name)
301
self.host = config.get(u"host", u"")
302
self.created = datetime.datetime.utcnow()
303
self.enabled = False
304
self.last_enabled = None
305
self.last_checked_ok = None
306
self.timeout = string_to_delta(config[u"timeout"])
307
self.interval = string_to_delta(config[u"interval"])
308
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
309
1025
self.checker = None
310
1026
self.checker_initiator_tag = None
311
1027
self.disable_initiator_tag = None
312
1028
self.checker_callback_tag = None
313
self.checker_command = config[u"checker"]
314
1029
self.current_checker_command = None
315
self.last_connect = None
316
1030
self.approved = None
1031
self.approvals_pending = 0
1032
self.changedstate = multiprocessing_manager.Condition(
1033
multiprocessing_manager.Lock())
1034
self.client_structure = [attr
1035
for attr in self.__dict__.keys()
1036
if not attr.startswith("_")]
1037
self.client_structure.append("client_structure")
1038
1039
for name, t in inspect.getmembers(
1040
type(self), lambda obj: isinstance(obj, property)):
1041
if not name.startswith("_"):
1042
self.client_structure.append(name)
1043
1044
# Send notice to process children that client state has changed
1045
def send_changedstate(self):
1046
with self.changedstate:
1047
self.changedstate.notify_all()
1048
317
1049
def enable(self):
318
1050
"""Start this client's checker and timeout hooks"""
319
if getattr(self, u"enabled", False):
1051
if getattr(self, "enabled", False):
320
1052
# Already enabled
321
1053
return
1054
self.enabled = True
322
1055
self.last_enabled = datetime.datetime.utcnow()
323
# Schedule a new checker to be started an 'interval' from now,
324
# and every interval from then on.
325
self.checker_initiator_tag = (gobject.timeout_add
326
(self.interval_milliseconds(),
327
self.start_checker))
328
# Also start a new checker *right now*.
329
self.start_checker()
330
# Schedule a disable() when 'timeout' has passed
331
self.disable_initiator_tag = (gobject.timeout_add
332
(self.timeout_milliseconds(),
333
self.disable))
334
self.enabled = True
335
336
def disable(self):
1056
self.init_checker()
1057
self.send_changedstate()
1058
1059
def disable(self, quiet=True):
337
1060
"""Disable this client."""
338
1061
if not getattr(self, "enabled", False):
339
1062
return False
340
logger.info(u"Disabling client %s", self.name)
341
if getattr(self, u"disable_initiator_tag", False):
342
gobject.source_remove(self.disable_initiator_tag)
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)
343
1067
self.disable_initiator_tag = None
344
if getattr(self, u"checker_initiator_tag", False):
345
gobject.source_remove(self.checker_initiator_tag)
1068
self.expires = None
1069
if getattr(self, "checker_initiator_tag", None) is not None:
1070
GLib.source_remove(self.checker_initiator_tag)
346
1071
self.checker_initiator_tag = None
347
1072
self.stop_checker()
348
if self.disable_hook:
349
self.disable_hook(self)
350
1073
self.enabled = False
351
# Do not run this again if called by a gobject.timeout_add
1074
if not quiet:
1075
self.send_changedstate()
1076
# Do not run this again if called by a GLib.timeout_add
352
1077
return False
353
1078
354
1079
def __del__(self):
355
self.disable_hook = None
356
1080
self.disable()
357
358
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):
359
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()
360
1120
self.checker_callback_tag = None
361
1121
self.checker = None
362
if os.WIFEXITED(condition):
363
exitstatus = os.WEXITSTATUS(condition)
364
if exitstatus == 0:
365
logger.info(u"Checker for %(name)s succeeded",
366
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))
367
1128
self.checked_ok()
368
1129
else:
369
logger.info(u"Checker for %(name)s failed",
370
vars(self))
1130
log.info("Checker for %(name)s failed", vars(self))
371
1131
else:
372
logger.warning(u"Checker for %(name)s crashed?",
373
vars(self))
374
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
375
1137
def checked_ok(self):
376
"""Bump up the timeout for this client.
377
378
This should only be called when the client has been seen,
379
alive and well.
380
"""
1138
"""Assert that the client has been seen, alive and well."""
381
1139
self.last_checked_ok = datetime.datetime.utcnow()
382
gobject.source_remove(self.disable_initiator_tag)
383
self.disable_initiator_tag = (gobject.timeout_add
384
(self.timeout_milliseconds(),
385
self.disable))
386
387
def start_checker(self):
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."""
1146
if timeout is None:
1147
timeout = self.timeout
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
1156
def need_approval(self):
1157
self.last_approval_request = datetime.datetime.utcnow()
1158
1159
def start_checker(self, start_was_randomized=False):
388
1160
"""Start a new checker subprocess if one is not running.
389
1161
390
1162
If a checker already exists, leave it running and do
391
1163
nothing."""
392
1164
# The reason for not killing a running checker is that if we
393
# did that, then if a checker (for some reason) started
394
# running slowly and taking more than 'interval' time, the
395
# client would inevitably timeout, since no checker would get
396
# 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
397
1169
# checkers alone, the checker would have to take more time
398
# than 'timeout' for the client to be declared invalid, which
399
# is as it should be.
400
401
# If a checker exists, make sure it is not a zombie
402
try:
403
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
404
except (AttributeError, OSError), error:
405
if (isinstance(error, OSError)
406
and error.errno != errno.ECHILD):
407
raise error
408
else:
409
if pid:
410
logger.warning(u"Checker was a zombie")
411
gobject.source_remove(self.checker_callback_tag)
412
self.checker_callback(pid, status,
413
self.current_checker_command)
1170
# than 'timeout' for the client to be disabled, which is as it
1171
# should be.
1172
1173
if self.checker is not None and not self.checker.is_alive():
1174
log.warning("Checker was not alive; joining")
1175
self.checker.join()
1176
self.checker = None
414
1177
# Start a new checker if needed
415
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}
416
1183
try:
417
# In case checker_command has exactly one % operator
418
command = self.checker_command % self.host
419
except TypeError:
420
# Escape attributes for the shell
421
escaped_attrs = dict((key,
422
re.escape(unicode(str(val),
423
errors=
424
u'replace')))
425
for key, val in
426
vars(self).iteritems())
427
try:
428
command = self.checker_command % escaped_attrs
429
except TypeError, error:
430
logger.error(u'Could not format string "%s":'
431
u' %s', self.checker_command, error)
432
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
433
1189
self.current_checker_command = command
434
try:
435
logger.info(u"Starting checker %r for %s",
436
command, self.name)
437
# We don't need to redirect stdout and stderr, since
438
# in normal mode, that is already done by daemon(),
439
# and in debug mode we don't want to. (Stdin is
440
# always replaced by /dev/null.)
441
self.checker = subprocess.Popen(command,
442
close_fds=True,
443
shell=True, cwd=u"/")
444
self.checker_callback_tag = (gobject.child_watch_add
445
(self.checker.pid,
446
self.checker_callback,
447
data=command))
448
# The checker may have completed before the gobject
449
# watch was added. Check for this.
450
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
451
if pid:
452
gobject.source_remove(self.checker_callback_tag)
453
self.checker_callback(pid, status, command)
454
except OSError, error:
455
logger.error(u"Failed to start subprocess: %s",
456
error)
457
# 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
458
1227
return True
459
1228
460
1229
def stop_checker(self):
461
1230
"""Force the checker process, if any, to stop."""
462
1231
if self.checker_callback_tag:
463
gobject.source_remove(self.checker_callback_tag)
1232
GLib.source_remove(self.checker_callback_tag)
464
1233
self.checker_callback_tag = None
465
if getattr(self, u"checker", None) is None:
1234
if getattr(self, "checker", None) is None:
466
1235
return
467
logger.debug(u"Stopping checker for %(name)s", vars(self))
468
try:
469
os.kill(self.checker.pid, signal.SIGTERM)
470
#os.sleep(0.5)
471
#if self.checker.poll() is None:
472
# os.kill(self.checker.pid, signal.SIGKILL)
473
except OSError, error:
474
if error.errno != errno.ESRCH: # No such process
475
raise
1236
log.debug("Stopping checker for %(name)s", vars(self))
1237
self.checker.terminate()
476
1238
self.checker = None
477
478
def still_valid(self):
479
"""Has the timeout not yet passed for this client?"""
480
if not getattr(self, u"enabled", False):
481
return False
482
now = datetime.datetime.utcnow()
483
if self.last_checked_ok is None:
484
return now < (self.created + self.timeout)
485
else:
486
return now < (self.last_checked_ok + self.timeout)
487
488
489
def dbus_service_property(dbus_interface, signature=u"v",
490
access=u"readwrite", byte_arrays=False):
1239
1240
1241
def dbus_service_property(dbus_interface,
1242
signature="v",
1243
access="readwrite",
1244
byte_arrays=False):
491
1245
"""Decorators for marking methods of a DBusObjectWithProperties to
492
1246
become properties on the D-Bus.
493
1247
494
1248
The decorated method will be called with no arguments by "Get"
495
1249
and with one argument by "Set".
496
1250
497
1251
The parameters, where they are supported, are the same as
498
1252
dbus.service.method, except there is only "signature", since the
499
1253
type from Get() and the type sent to Set() is the same.
500
1254
"""
1255
# Encoding deeply encoded byte arrays is not supported yet by the
1256
# "Set" method, so we fail early here:
1257
if byte_arrays and signature != "ay":
1258
raise ValueError("Byte arrays not supported for non-'ay'"
1259
" signature {!r}".format(signature))
1260
501
1261
def decorator(func):
502
1262
func._dbus_is_property = True
503
1263
func._dbus_interface = dbus_interface
504
1264
func._dbus_signature = signature
505
1265
func._dbus_access = access
506
1266
func._dbus_name = func.__name__
507
if func._dbus_name.endswith(u"_dbus_property"):
1267
if func._dbus_name.endswith("_dbus_property"):
508
1268
func._dbus_name = func._dbus_name[:-14]
509
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
510
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
511
1315
return decorator
512
1316
513
1317
514
1318
class DBusPropertyException(dbus.exceptions.DBusException):
515
1319
"""A base class for D-Bus property-related exceptions
516
1320
"""
517
def __unicode__(self):
518
return unicode(str(self))
1321
pass
519
1322
520
1323
521
1324
class DBusPropertyAccessException(DBusPropertyException):
530
1333
pass
531
1334
532
1335
533
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):
534
1426
"""A D-Bus object with properties.
535
1427
536
1428
Classes inheriting from this can use the dbus_service_property
537
1429
decorator to expose methods as D-Bus properties. It exposes the
538
1430
standard Get(), Set(), and GetAll() methods on the D-Bus.
539
1431
"""
540
541
@staticmethod
542
def _is_dbus_property(obj):
543
return getattr(obj, u"_dbus_is_property", False)
544
545
def _get_all_dbus_properties(self):
546
"""Returns a generator of (name, attribute) pairs
547
"""
548
return ((prop._dbus_name, prop)
549
for name, prop in
550
inspect.getmembers(self, self._is_dbus_property))
551
1432
552
1433
def _get_dbus_property(self, interface_name, property_name):
553
1434
"""Returns a bound method if one exists which is a D-Bus
554
1435
property with the specified name and interface.
555
1436
"""
556
for name in (property_name,
557
property_name + u"_dbus_property"):
558
prop = getattr(self, name, None)
559
if (prop is None
560
or not self._is_dbus_property(prop)
561
or prop._dbus_name != property_name
562
or (interface_name and prop._dbus_interface
563
and interface_name != prop._dbus_interface)):
564
continue
565
return prop
1437
for cls in self.__class__.__mro__:
1438
for name, value in inspect.getmembers(
1439
cls, self._is_dbus_thing("property")):
1440
if (value._dbus_name == property_name
1441
and value._dbus_interface == interface_name):
1442
return value.__get__(self)
1443
566
1444
# No such property
567
raise DBusPropertyNotFound(self.dbus_object_path + u":"
568
+ interface_name + u"."
569
+ property_name)
570
571
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
572
out_signature=u"v")
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",
1459
out_signature="v")
573
1460
def Get(self, interface_name, property_name):
574
1461
"""Standard D-Bus property Get() method, see D-Bus standard.
575
1462
"""
576
1463
prop = self._get_dbus_property(interface_name, property_name)
577
if prop._dbus_access == u"write":
1464
if prop._dbus_access == "write":
578
1465
raise DBusPropertyAccessException(property_name)
579
1466
value = prop()
580
if not hasattr(value, u"variant_level"):
1467
if not hasattr(value, "variant_level"):
581
1468
return value
582
1469
return type(value)(value, variant_level=value.variant_level+1)
583
584
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
1470
1471
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
585
1472
def Set(self, interface_name, property_name, value):
586
1473
"""Standard D-Bus property Set() method, see D-Bus standard.
587
1474
"""
588
1475
prop = self._get_dbus_property(interface_name, property_name)
589
if prop._dbus_access == u"read":
1476
if prop._dbus_access == "read":
590
1477
raise DBusPropertyAccessException(property_name)
591
if prop._dbus_get_args_options[u"byte_arrays"]:
592
value = dbus.ByteArray(''.join(unichr(byte)
593
for byte in value))
1478
if prop._dbus_get_args_options["byte_arrays"]:
1479
# The byte_arrays option is not supported yet on
1480
# signatures other than "ay".
1481
if prop._dbus_signature != "ay":
1482
raise ValueError("Byte arrays not supported for non-"
1483
"'ay' signature {!r}"
1484
.format(prop._dbus_signature))
1485
value = dbus.ByteArray(bytes(value))
594
1486
prop(value)
595
596
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
597
out_signature=u"a{sv}")
1487
1488
@dbus.service.method(dbus.PROPERTIES_IFACE,
1489
in_signature="s",
1490
out_signature="a{sv}")
598
1491
def GetAll(self, interface_name):
599
1492
"""Standard D-Bus property GetAll() method, see D-Bus
600
1493
standard.
601
1494
602
1495
Note: Will not include properties with access="write".
603
1496
"""
604
all = {}
605
for name, prop in self._get_all_dbus_properties():
1497
properties = {}
1498
for name, prop in self._get_all_dbus_things("property"):
606
1499
if (interface_name
607
1500
and interface_name != prop._dbus_interface):
608
1501
# Interface non-empty but did not match
609
1502
continue
610
1503
# Ignore write-only properties
611
if prop._dbus_access == u"write":
1504
if prop._dbus_access == "write":
612
1505
continue
613
1506
value = prop()
614
if not hasattr(value, u"variant_level"):
615
all[name] = value
1507
if not hasattr(value, "variant_level"):
1508
properties[name] = value
616
1509
continue
617
all[name] = type(value)(value, variant_level=
618
value.variant_level+1)
619
return dbus.Dictionary(all, signature=u"sv")
620
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
621
1522
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
622
out_signature=u"s",
623
path_keyword='object_path',
624
connection_keyword='connection')
1523
out_signature="s",
1524
path_keyword="object_path",
1525
connection_keyword="connection")
625
1526
def Introspect(self, object_path, connection):
626
"""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.
627
1530
"""
628
xmlstring = dbus.service.Object.Introspect(self, object_path,
629
connection)
1531
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1532
object_path,
1533
connection)
630
1534
try:
631
1535
document = xml.dom.minidom.parseString(xmlstring)
1536
632
1537
def make_tag(document, name, prop):
633
e = document.createElement(u"property")
634
e.setAttribute(u"name", name)
635
e.setAttribute(u"type", prop._dbus_signature)
636
e.setAttribute(u"access", prop._dbus_access)
1538
e = document.createElement("property")
1539
e.setAttribute("name", name)
1540
e.setAttribute("type", prop._dbus_signature)
1541
e.setAttribute("access", prop._dbus_access)
637
1542
return e
638
for if_tag in document.getElementsByTagName(u"interface"):
1543
1544
for if_tag in document.getElementsByTagName("interface"):
1545
# Add property tags
639
1546
for tag in (make_tag(document, name, prop)
640
1547
for name, prop
641
in self._get_all_dbus_properties()
1548
in self._get_all_dbus_things("property")
642
1549
if prop._dbus_interface
643
== if_tag.getAttribute(u"name")):
1550
== if_tag.getAttribute("name")):
644
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)
645
1568
# Add the names to the return values for the
646
1569
# "org.freedesktop.DBus.Properties" methods
647
if (if_tag.getAttribute(u"name")
648
== u"org.freedesktop.DBus.Properties"):
649
for cn in if_tag.getElementsByTagName(u"method"):
650
if cn.getAttribute(u"name") == u"Get":
651
for arg in cn.getElementsByTagName(u"arg"):
652
if (arg.getAttribute(u"direction")
653
== u"out"):
654
arg.setAttribute(u"name", u"value")
655
elif cn.getAttribute(u"name") == u"GetAll":
656
for arg in cn.getElementsByTagName(u"arg"):
657
if (arg.getAttribute(u"direction")
658
== u"out"):
659
arg.setAttribute(u"name", u"props")
660
xmlstring = document.toxml(u"utf-8")
661
document.unlink()
662
except (AttributeError, xml.dom.DOMException,
663
xml.parsers.expat.ExpatError), error:
664
logger.error(u"Failed to override Introspection method",
665
error)
666
return xmlstring
667
668
1570
if (if_tag.getAttribute("name")
1571
== "org.freedesktop.DBus.Properties"):
1572
for cn in if_tag.getElementsByTagName("method"):
1573
if cn.getAttribute("name") == "Get":
1574
for arg in cn.getElementsByTagName("arg"):
1575
if (arg.getAttribute("direction")
1576
== "out"):
1577
arg.setAttribute("name", "value")
1578
elif cn.getAttribute("name") == "GetAll":
1579
for arg in cn.getElementsByTagName("arg"):
1580
if (arg.getAttribute("direction")
1581
== "out"):
1582
arg.setAttribute("name", "props")
1583
xmlstring = document.toxml("utf-8")
1584
document.unlink()
1585
except (AttributeError, xml.dom.DOMException,
1586
xml.parsers.expat.ExpatError) as error:
1587
log.error("Failed to override Introspection method",
1588
exc_info=error)
1589
return xmlstring
1590
1591
1592
try:
1593
dbus.OBJECT_MANAGER_IFACE
1594
except AttributeError:
1595
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1596
1597
1598
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1599
"""A D-Bus object with an ObjectManager.
1600
1601
Classes inheriting from this exposes the standard
1602
GetManagedObjects call and the InterfacesAdded and
1603
InterfacesRemoved signals on the standard
1604
"org.freedesktop.DBus.ObjectManager" interface.
1605
1606
Note: No signals are sent automatically; they must be sent
1607
manually.
1608
"""
1609
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1610
out_signature="a{oa{sa{sv}}}")
1611
def GetManagedObjects(self):
1612
"""This function must be overridden"""
1613
raise NotImplementedError()
1614
1615
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1616
signature="oa{sa{sv}}")
1617
def InterfacesAdded(self, object_path, interfaces_and_properties):
1618
pass
1619
1620
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1621
def InterfacesRemoved(self, object_path, interfaces):
1622
pass
1623
1624
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1625
out_signature="s",
1626
path_keyword="object_path",
1627
connection_keyword="connection")
1628
def Introspect(self, object_path, connection):
1629
"""Overloading of standard D-Bus method.
1630
1631
Override return argument name of GetManagedObjects to be
1632
"objpath_interfaces_and_properties"
1633
"""
1634
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1635
object_path,
1636
connection)
1637
try:
1638
document = xml.dom.minidom.parseString(xmlstring)
1639
1640
for if_tag in document.getElementsByTagName("interface"):
1641
# Fix argument name for the GetManagedObjects method
1642
if (if_tag.getAttribute("name")
1643
== dbus.OBJECT_MANAGER_IFACE):
1644
for cn in if_tag.getElementsByTagName("method"):
1645
if (cn.getAttribute("name")
1646
== "GetManagedObjects"):
1647
for arg in cn.getElementsByTagName("arg"):
1648
if (arg.getAttribute("direction")
1649
== "out"):
1650
arg.setAttribute(
1651
"name",
1652
"objpath_interfaces"
1653
"_and_properties")
1654
xmlstring = document.toxml("utf-8")
1655
document.unlink()
1656
except (AttributeError, xml.dom.DOMException,
1657
xml.parsers.expat.ExpatError) as error:
1658
log.error("Failed to override Introspection method",
1659
exc_info=error)
1660
return xmlstring
1661
1662
1663
def datetime_to_dbus(dt, variant_level=0):
1664
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1665
if dt is None:
1666
return dbus.String("", variant_level=variant_level)
1667
return dbus.String(dt.isoformat(), variant_level=variant_level)
1668
1669
1670
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1671
"""A class decorator; applied to a subclass of
1672
dbus.service.Object, it will add alternate D-Bus attributes with
1673
interface names according to the "alt_interface_names" mapping.
1674
Usage:
1675
1676
@alternate_dbus_interfaces({"org.example.Interface":
1677
"net.example.AlternateInterface"})
1678
class SampleDBusObject(dbus.service.Object):
1679
@dbus.service.method("org.example.Interface")
1680
def SampleDBusMethod():
1681
pass
1682
1683
The above "SampleDBusMethod" on "SampleDBusObject" will be
1684
reachable via two interfaces: "org.example.Interface" and
1685
"net.example.AlternateInterface", the latter of which will have
1686
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1687
"true", unless "deprecate" is passed with a False value.
1688
1689
This works for methods and signals, and also for D-Bus properties
1690
(from DBusObjectWithProperties) and interfaces (from the
1691
dbus_interface_annotations decorator).
1692
"""
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):
1701
# Ignore non-D-Bus attributes, and D-Bus attributes
1702
# with the wrong interface name
1703
if (not hasattr(attribute, "_dbus_interface")
1704
or not attribute._dbus_interface.startswith(
1705
orig_interface_name)):
1706
continue
1707
# Create an alternate D-Bus interface name based on
1708
# the current name
1709
alt_interface = attribute._dbus_interface.replace(
1710
orig_interface_name, alt_interface_name)
1711
interface_names.add(alt_interface)
1712
# Is this a D-Bus signal?
1713
if getattr(attribute, "_dbus_is_signal", False):
1714
# Extract the original non-method undecorated
1715
# function by black magic
1716
if sys.version_info.major == 2:
1717
nonmethod_func = (dict(
1718
zip(attribute.func_code.co_freevars,
1719
attribute.__closure__))
1720
["func"].cell_contents)
1721
else:
1722
nonmethod_func = (dict(
1723
zip(attribute.__code__.co_freevars,
1724
attribute.__closure__))
1725
["func"].cell_contents)
1726
# Create a new, but exactly alike, function
1727
# object, and decorate it to be a new D-Bus signal
1728
# with the alternate D-Bus interface name
1729
new_function = copy_function(nonmethod_func)
1730
new_function = (dbus.service.signal(
1731
alt_interface,
1732
attribute._dbus_signature)(new_function))
1733
# Copy annotations, if any
1734
try:
1735
new_function._dbus_annotations = dict(
1736
attribute._dbus_annotations)
1737
except AttributeError:
1738
pass
1739
1740
# Define a creator of a function to call both the
1741
# original and alternate functions, so both the
1742
# original and alternate signals gets sent when
1743
# the function is called
1744
def fixscope(func1, func2):
1745
"""This function is a scope container to pass
1746
func1 and func2 to the "call_both" function
1747
outside of its arguments"""
1748
1749
@functools.wraps(func2)
1750
def call_both(*args, **kwargs):
1751
"""This function will emit two D-Bus
1752
signals by calling func1 and func2"""
1753
func1(*args, **kwargs)
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
1761
return call_both
1762
# Create the "call_both" function and add it to
1763
# the class
1764
attr[attrname] = fixscope(attribute, new_function)
1765
# Is this a D-Bus method?
1766
elif getattr(attribute, "_dbus_is_method", False):
1767
# Create a new, but exactly alike, function
1768
# object. Decorate it to be a new D-Bus method
1769
# with the alternate D-Bus interface name. Add it
1770
# to the class.
1771
attr[attrname] = (
1772
dbus.service.method(
1773
alt_interface,
1774
attribute._dbus_in_signature,
1775
attribute._dbus_out_signature)
1776
(copy_function(attribute)))
1777
# Copy annotations, if any
1778
try:
1779
attr[attrname]._dbus_annotations = dict(
1780
attribute._dbus_annotations)
1781
except AttributeError:
1782
pass
1783
# Is this a D-Bus property?
1784
elif getattr(attribute, "_dbus_is_property", False):
1785
# Create a new, but exactly alike, function
1786
# object, and decorate it to be a new D-Bus
1787
# property with the alternate D-Bus interface
1788
# name. Add it to the class.
1789
attr[attrname] = (dbus_service_property(
1790
alt_interface, attribute._dbus_signature,
1791
attribute._dbus_access,
1792
attribute._dbus_get_args_options
1793
["byte_arrays"])
1794
(copy_function(attribute)))
1795
# Copy annotations, if any
1796
try:
1797
attr[attrname]._dbus_annotations = dict(
1798
attribute._dbus_annotations)
1799
except AttributeError:
1800
pass
1801
# Is this a D-Bus interface?
1802
elif getattr(attribute, "_dbus_is_interface", False):
1803
# Create a new, but exactly alike, function
1804
# object. Decorate it to be a new D-Bus interface
1805
# with the alternate D-Bus interface name. Add it
1806
# to the class.
1807
attr[attrname] = (
1808
dbus_interface_annotations(alt_interface)
1809
(copy_function(attribute)))
1810
if deprecate:
1811
# Deprecate all alternate interfaces
1812
iname = "_AlternateDBusNames_interface_annotation{}"
1813
for interface_name in interface_names:
1814
1815
@dbus_interface_annotations(interface_name)
1816
def func(self):
1817
return {"org.freedesktop.DBus.Deprecated":
1818
"true"}
1819
# Find an unused name
1820
for aname in (iname.format(i)
1821
for i in itertools.count()):
1822
if aname not in attr:
1823
attr[aname] = func
1824
break
1825
if interface_names:
1826
# Replace the class with a new subclass of it with
1827
# methods, signals, etc. as created above.
1828
if sys.version_info.major == 2:
1829
cls = type(b"{}Alternate".format(cls.__name__),
1830
(cls, ), attr)
1831
else:
1832
cls = type("{}Alternate".format(cls.__name__),
1833
(cls, ), attr)
1834
return cls
1835
1836
return wrapper
1837
1838
1839
@alternate_dbus_interfaces({"se.recompile.Mandos":
1840
"se.bsnet.fukt.Mandos"})
669
1841
class ClientDBus(Client, DBusObjectWithProperties):
670
1842
"""A Client class using D-Bus
671
1843
672
1844
Attributes:
673
1845
dbus_object_path: dbus.ObjectPath
674
1846
bus: dbus.SystemBus()
675
1847
"""
1848
1849
runtime_expansions = (Client.runtime_expansions
1850
+ ("dbus_object_path", ))
1851
1852
_interface = "se.recompile.Mandos.Client"
1853
676
1854
# dbus.service.Object doesn't use super(), so we can't either.
677
678
def __init__(self, bus = None, *args, **kwargs):
1855
1856
def __init__(self, bus=None, *args, **kwargs):
679
1857
self.bus = bus
680
1858
Client.__init__(self, *args, **kwargs)
681
1859
# Only now, when this client is initialized, can it show up on
682
1860
# the D-Bus
683
self.dbus_object_path = (dbus.ObjectPath
684
(u"/clients/"
685
+ self.name.replace(u".", u"_")))
1861
client_object_name = str(self.name).translate(
1862
{ord("."): ord("_"),
1863
ord("-"): ord("_")})
1864
self.dbus_object_path = dbus.ObjectPath(
1865
"/clients/" + client_object_name)
686
1866
DBusObjectWithProperties.__init__(self, self.bus,
687
1867
self.dbus_object_path)
688
689
@staticmethod
690
def _datetime_to_dbus(dt, variant_level=0):
691
"""Convert a UTC datetime.datetime() to a D-Bus type."""
692
return dbus.String(dt.isoformat(),
693
variant_level=variant_level)
694
695
def enable(self):
696
oldstate = getattr(self, u"enabled", False)
697
r = Client.enable(self)
698
if oldstate != self.enabled:
699
# Emit D-Bus signals
700
self.PropertyChanged(dbus.String(u"enabled"),
701
dbus.Boolean(True, variant_level=1))
702
self.PropertyChanged(
703
dbus.String(u"last_enabled"),
704
self._datetime_to_dbus(self.last_enabled,
705
variant_level=1))
706
return r
707
708
def disable(self, signal = True):
709
oldstate = getattr(self, u"enabled", False)
710
r = Client.disable(self)
711
if signal and oldstate != self.enabled:
712
# Emit D-Bus signal
713
self.PropertyChanged(dbus.String(u"enabled"),
714
dbus.Boolean(False, variant_level=1))
715
return r
716
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):
1874
""" Modify a variable so that it's a property which announces
1875
its changes to DBus.
1876
1877
transform_fun: Function that takes a value and a variant_level
1878
and transforms it to a D-Bus type.
1879
dbus_name: D-Bus name of the variable
1880
type_func: Function that transform the value before sending it
1881
to the D-Bus. Default: no transform
1882
variant_level: D-Bus variant level. Default: 1
1883
"""
1884
attrname = "_{}".format(dbus_name)
1885
1886
def setter(self, value):
1887
if hasattr(self, "dbus_object_path"):
1888
if (not hasattr(self, attrname) or
1889
type_func(getattr(self, attrname, None))
1890
!= type_func(value)):
1891
if invalidate_only:
1892
self.PropertiesChanged(
1893
_interface, dbus.Dictionary(),
1894
dbus.Array((dbus_name, )))
1895
else:
1896
dbus_value = transform_func(
1897
type_func(value),
1898
variant_level=variant_level)
1899
self.PropertyChanged(dbus.String(dbus_name),
1900
dbus_value)
1901
self.PropertiesChanged(
1902
_interface,
1903
dbus.Dictionary({dbus.String(dbus_name):
1904
dbus_value}),
1905
dbus.Array())
1906
setattr(self, attrname, value)
1907
1908
return property(lambda self: getattr(self, attrname), setter)
1909
1910
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1911
approvals_pending = notifychangeproperty(dbus.Boolean,
1912
"ApprovalPending",
1913
type_func=bool)
1914
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1915
last_enabled = notifychangeproperty(datetime_to_dbus,
1916
"LastEnabled")
1917
checker = notifychangeproperty(
1918
dbus.Boolean, "CheckerRunning",
1919
type_func=lambda checker: checker is not None)
1920
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1921
"LastCheckedOK")
1922
last_checker_status = notifychangeproperty(dbus.Int16,
1923
"LastCheckerStatus")
1924
last_approval_request = notifychangeproperty(
1925
datetime_to_dbus, "LastApprovalRequest")
1926
approved_by_default = notifychangeproperty(dbus.Boolean,
1927
"ApprovedByDefault")
1928
approval_delay = notifychangeproperty(
1929
dbus.UInt64, "ApprovalDelay",
1930
type_func=lambda td: td.total_seconds() * 1000)
1931
approval_duration = notifychangeproperty(
1932
dbus.UInt64, "ApprovalDuration",
1933
type_func=lambda td: td.total_seconds() * 1000)
1934
host = notifychangeproperty(dbus.String, "Host")
1935
timeout = notifychangeproperty(
1936
dbus.UInt64, "Timeout",
1937
type_func=lambda td: td.total_seconds() * 1000)
1938
extended_timeout = notifychangeproperty(
1939
dbus.UInt64, "ExtendedTimeout",
1940
type_func=lambda td: td.total_seconds() * 1000)
1941
interval = notifychangeproperty(
1942
dbus.UInt64, "Interval",
1943
type_func=lambda td: td.total_seconds() * 1000)
1944
checker_command = notifychangeproperty(dbus.String, "Checker")
1945
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1946
invalidate_only=True)
1947
1948
del notifychangeproperty
1949
717
1950
def __del__(self, *args, **kwargs):
718
1951
try:
719
1952
self.remove_from_connection()
720
1953
except LookupError:
721
1954
pass
722
if hasattr(DBusObjectWithProperties, u"__del__"):
1955
if hasattr(DBusObjectWithProperties, "__del__"):
723
1956
DBusObjectWithProperties.__del__(self, *args, **kwargs)
724
1957
Client.__del__(self, *args, **kwargs)
725
726
def checker_callback(self, pid, condition, command,
727
*args, **kwargs):
728
self.checker_callback_tag = None
729
self.checker = None
730
# Emit D-Bus signal
731
self.PropertyChanged(dbus.String(u"checker_running"),
732
dbus.Boolean(False, variant_level=1))
733
if os.WIFEXITED(condition):
734
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:
735
1966
# Emit D-Bus signal
736
1967
self.CheckerCompleted(dbus.Int16(exitstatus),
737
dbus.Int64(condition),
1968
# This is specific to GNU libC
1969
dbus.Int64(exitstatus << 8),
738
1970
dbus.String(command))
739
1971
else:
740
1972
# Emit D-Bus signal
741
1973
self.CheckerCompleted(dbus.Int16(-1),
742
dbus.Int64(condition),
1974
dbus.Int64(
1975
# This is specific to GNU libC
1976
(exitstatus << 8)
1977
| self.last_checker_signal),
743
1978
dbus.String(command))
744
745
return Client.checker_callback(self, pid, condition, command,
746
*args, **kwargs)
747
748
def checked_ok(self, *args, **kwargs):
749
r = Client.checked_ok(self, *args, **kwargs)
750
# Emit D-Bus signal
751
self.PropertyChanged(
752
dbus.String(u"last_checked_ok"),
753
(self._datetime_to_dbus(self.last_checked_ok,
754
variant_level=1)))
755
return r
756
1979
return ret
1980
757
1981
def start_checker(self, *args, **kwargs):
758
old_checker = self.checker
759
if self.checker is not None:
760
old_checker_pid = self.checker.pid
761
else:
762
old_checker_pid = None
1982
old_checker_pid = getattr(self.checker, "pid", None)
763
1983
r = Client.start_checker(self, *args, **kwargs)
764
1984
# Only if new checker process was started
765
1985
if (self.checker is not None
766
1986
and old_checker_pid != self.checker.pid):
767
1987
# Emit D-Bus signal
768
1988
self.CheckerStarted(self.current_checker_command)
769
self.PropertyChanged(
770
dbus.String(u"checker_running"),
771
dbus.Boolean(True, variant_level=1))
772
return r
773
774
def stop_checker(self, *args, **kwargs):
775
old_checker = getattr(self, u"checker", None)
776
r = Client.stop_checker(self, *args, **kwargs)
777
if (old_checker is not None
778
and getattr(self, u"checker", None) is None):
779
self.PropertyChanged(dbus.String(u"checker_running"),
780
dbus.Boolean(False, variant_level=1))
781
return r
782
783
## D-Bus methods & signals
784
_interface = u"se.bsnet.fukt.Mandos.Client"
785
786
# CheckedOK - method
787
@dbus.service.method(_interface)
788
def CheckedOK(self):
789
return self.checked_ok()
790
1989
return r
1990
1991
def _reset_approved(self):
1992
self.approved = None
1993
return False
1994
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)
1999
self.send_changedstate()
2000
2001
# D-Bus methods, signals & properties
2002
2003
# Interfaces
2004
2005
# Signals
2006
791
2007
# CheckerCompleted - signal
792
@dbus.service.signal(_interface, signature=u"nxs")
2008
@dbus.service.signal(_interface, signature="nxs")
793
2009
def CheckerCompleted(self, exitcode, waitstatus, command):
794
2010
"D-Bus signal"
795
2011
pass
796
2012
797
2013
# CheckerStarted - signal
798
@dbus.service.signal(_interface, signature=u"s")
2014
@dbus.service.signal(_interface, signature="s")
799
2015
def CheckerStarted(self, command):
800
2016
"D-Bus signal"
801
2017
pass
802
2018
803
2019
# PropertyChanged - signal
804
@dbus.service.signal(_interface, signature=u"sv")
2020
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2021
@dbus.service.signal(_interface, signature="sv")
805
2022
def PropertyChanged(self, property, value):
806
2023
"D-Bus signal"
807
2024
pass
808
2025
809
2026
# GotSecret - signal
810
2027
@dbus.service.signal(_interface)
811
2028
def GotSecret(self):
812
"D-Bus signal"
2029
"""D-Bus signal
2030
Is sent after a successful transfer of secret from the Mandos
2031
server to mandos-client
2032
"""
813
2033
pass
814
2034
815
2035
# Rejected - signal
816
@dbus.service.signal(_interface)
817
def Rejected(self):
2036
@dbus.service.signal(_interface, signature="s")
2037
def Rejected(self, reason):
818
2038
"D-Bus signal"
819
2039
pass
820
2040
2041
# NeedApproval - signal
2042
@dbus.service.signal(_interface, signature="tb")
2043
def NeedApproval(self, timeout, default):
2044
"D-Bus signal"
2045
return self.need_approval()
2046
2047
# Methods
2048
2049
# Approve - method
2050
@dbus.service.method(_interface, in_signature="b")
2051
def Approve(self, value):
2052
self.approve(value)
2053
2054
# CheckedOK - method
2055
@dbus.service.method(_interface)
2056
def CheckedOK(self):
2057
self.checked_ok()
2058
821
2059
# Enable - method
2060
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
822
2061
@dbus.service.method(_interface)
823
2062
def Enable(self):
824
2063
"D-Bus method"
825
2064
self.enable()
826
2065
827
2066
# StartChecker - method
2067
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
828
2068
@dbus.service.method(_interface)
829
2069
def StartChecker(self):
830
2070
"D-Bus method"
831
2071
self.start_checker()
832
2072
833
2073
# Disable - method
2074
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
834
2075
@dbus.service.method(_interface)
835
2076
def Disable(self):
836
2077
"D-Bus method"
837
2078
self.disable()
838
2079
839
2080
# StopChecker - method
2081
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
840
2082
@dbus.service.method(_interface)
841
2083
def StopChecker(self):
842
2084
self.stop_checker()
843
844
# name - property
845
@dbus_service_property(_interface, signature=u"s", access=u"read")
846
def name_dbus_property(self):
2085
2086
# Properties
2087
2088
# ApprovalPending - property
2089
@dbus_service_property(_interface, signature="b", access="read")
2090
def ApprovalPending_dbus_property(self):
2091
return dbus.Boolean(bool(self.approvals_pending))
2092
2093
# ApprovedByDefault - property
2094
@dbus_service_property(_interface,
2095
signature="b",
2096
access="readwrite")
2097
def ApprovedByDefault_dbus_property(self, value=None):
2098
if value is None: # get
2099
return dbus.Boolean(self.approved_by_default)
2100
self.approved_by_default = bool(value)
2101
2102
# ApprovalDelay - property
2103
@dbus_service_property(_interface,
2104
signature="t",
2105
access="readwrite")
2106
def ApprovalDelay_dbus_property(self, value=None):
2107
if value is None: # get
2108
return dbus.UInt64(self.approval_delay.total_seconds()
2109
* 1000)
2110
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2111
2112
# ApprovalDuration - property
2113
@dbus_service_property(_interface,
2114
signature="t",
2115
access="readwrite")
2116
def ApprovalDuration_dbus_property(self, value=None):
2117
if value is None: # get
2118
return dbus.UInt64(self.approval_duration.total_seconds()
2119
* 1000)
2120
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2121
2122
# Name - property
2123
@dbus_annotations(
2124
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2125
@dbus_service_property(_interface, signature="s", access="read")
2126
def Name_dbus_property(self):
847
2127
return dbus.String(self.name)
848
849
# fingerprint - property
850
@dbus_service_property(_interface, signature=u"s", access=u"read")
851
def fingerprint_dbus_property(self):
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
2136
# Fingerprint - property
2137
@dbus_annotations(
2138
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2139
@dbus_service_property(_interface, signature="s", access="read")
2140
def Fingerprint_dbus_property(self):
852
2141
return dbus.String(self.fingerprint)
853
854
# host - property
855
@dbus_service_property(_interface, signature=u"s",
856
access=u"readwrite")
857
def host_dbus_property(self, value=None):
2142
2143
# Host - property
2144
@dbus_service_property(_interface,
2145
signature="s",
2146
access="readwrite")
2147
def Host_dbus_property(self, value=None):
858
2148
if value is None: # get
859
2149
return dbus.String(self.host)
860
self.host = value
861
# Emit D-Bus signal
862
self.PropertyChanged(dbus.String(u"host"),
863
dbus.String(value, variant_level=1))
864
865
# created - property
866
@dbus_service_property(_interface, signature=u"s", access=u"read")
867
def created_dbus_property(self):
868
return dbus.String(self._datetime_to_dbus(self.created))
869
870
# last_enabled - property
871
@dbus_service_property(_interface, signature=u"s", access=u"read")
872
def last_enabled_dbus_property(self):
873
if self.last_enabled is None:
874
return dbus.String(u"")
875
return dbus.String(self._datetime_to_dbus(self.last_enabled))
876
877
# enabled - property
878
@dbus_service_property(_interface, signature=u"b",
879
access=u"readwrite")
880
def enabled_dbus_property(self, value=None):
2150
self.host = str(value)
2151
2152
# Created - property
2153
@dbus_annotations(
2154
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2155
@dbus_service_property(_interface, signature="s", access="read")
2156
def Created_dbus_property(self):
2157
return datetime_to_dbus(self.created)
2158
2159
# LastEnabled - property
2160
@dbus_service_property(_interface, signature="s", access="read")
2161
def LastEnabled_dbus_property(self):
2162
return datetime_to_dbus(self.last_enabled)
2163
2164
# Enabled - property
2165
@dbus_service_property(_interface,
2166
signature="b",
2167
access="readwrite")
2168
def Enabled_dbus_property(self, value=None):
881
2169
if value is None: # get
882
2170
return dbus.Boolean(self.enabled)
883
2171
if value:
884
2172
self.enable()
885
2173
else:
886
2174
self.disable()
887
888
# last_checked_ok - property
889
@dbus_service_property(_interface, signature=u"s",
890
access=u"readwrite")
891
def last_checked_ok_dbus_property(self, value=None):
2175
2176
# LastCheckedOK - property
2177
@dbus_service_property(_interface,
2178
signature="s",
2179
access="readwrite")
2180
def LastCheckedOK_dbus_property(self, value=None):
892
2181
if value is not None:
893
2182
self.checked_ok()
894
2183
return
895
if self.last_checked_ok is None:
896
return dbus.String(u"")
897
return dbus.String(self._datetime_to_dbus(self
898
.last_checked_ok))
899
900
# timeout - property
901
@dbus_service_property(_interface, signature=u"t",
902
access=u"readwrite")
903
def timeout_dbus_property(self, value=None):
2184
return datetime_to_dbus(self.last_checked_ok)
2185
2186
# LastCheckerStatus - property
2187
@dbus_service_property(_interface, signature="n", access="read")
2188
def LastCheckerStatus_dbus_property(self):
2189
return dbus.Int16(self.last_checker_status)
2190
2191
# Expires - property
2192
@dbus_service_property(_interface, signature="s", access="read")
2193
def Expires_dbus_property(self):
2194
return datetime_to_dbus(self.expires)
2195
2196
# LastApprovalRequest - property
2197
@dbus_service_property(_interface, signature="s", access="read")
2198
def LastApprovalRequest_dbus_property(self):
2199
return datetime_to_dbus(self.last_approval_request)
2200
2201
# Timeout - property
2202
@dbus_service_property(_interface,
2203
signature="t",
2204
access="readwrite")
2205
def Timeout_dbus_property(self, value=None):
904
2206
if value is None: # get
905
return dbus.UInt64(self.timeout_milliseconds())
2207
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2208
old_timeout = self.timeout
906
2209
self.timeout = datetime.timedelta(0, 0, 0, value)
907
# Emit D-Bus signal
908
self.PropertyChanged(dbus.String(u"timeout"),
909
dbus.UInt64(value, variant_level=1))
910
if getattr(self, u"disable_initiator_tag", None) is None:
911
return
912
# Reschedule timeout
913
gobject.source_remove(self.disable_initiator_tag)
914
self.disable_initiator_tag = None
915
time_to_die = (self.
916
_timedelta_to_milliseconds((self
917
.last_checked_ok
918
+ self.timeout)
919
- datetime.datetime
920
.utcnow()))
921
if time_to_die <= 0:
922
# The timeout has passed
923
self.disable()
924
else:
925
self.disable_initiator_tag = (gobject.timeout_add
926
(time_to_die, self.disable))
927
928
# interval - property
929
@dbus_service_property(_interface, signature=u"t",
930
access=u"readwrite")
931
def interval_dbus_property(self, value=None):
932
if value is None: # get
933
return dbus.UInt64(self.interval_milliseconds())
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
2226
# ExtendedTimeout - property
2227
@dbus_service_property(_interface,
2228
signature="t",
2229
access="readwrite")
2230
def ExtendedTimeout_dbus_property(self, value=None):
2231
if value is None: # get
2232
return dbus.UInt64(self.extended_timeout.total_seconds()
2233
* 1000)
2234
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2235
2236
# Interval - property
2237
@dbus_service_property(_interface,
2238
signature="t",
2239
access="readwrite")
2240
def Interval_dbus_property(self, value=None):
2241
if value is None: # get
2242
return dbus.UInt64(self.interval.total_seconds() * 1000)
934
2243
self.interval = datetime.timedelta(0, 0, 0, value)
935
# Emit D-Bus signal
936
self.PropertyChanged(dbus.String(u"interval"),
937
dbus.UInt64(value, variant_level=1))
938
if getattr(self, u"checker_initiator_tag", None) is None:
2244
if getattr(self, "checker_initiator_tag", None) is None:
939
2245
return
940
# Reschedule checker run
941
gobject.source_remove(self.checker_initiator_tag)
942
self.checker_initiator_tag = (gobject.timeout_add
943
(value, self.start_checker))
944
self.start_checker() # Start one now, too
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
945
2252
946
# checker - property
947
@dbus_service_property(_interface, signature=u"s",
948
access=u"readwrite")
949
def checker_dbus_property(self, value=None):
2253
# Checker - property
2254
@dbus_service_property(_interface,
2255
signature="s",
2256
access="readwrite")
2257
def Checker_dbus_property(self, value=None):
950
2258
if value is None: # get
951
2259
return dbus.String(self.checker_command)
952
self.checker_command = value
953
# Emit D-Bus signal
954
self.PropertyChanged(dbus.String(u"checker"),
955
dbus.String(self.checker_command,
956
variant_level=1))
957
958
# checker_running - property
959
@dbus_service_property(_interface, signature=u"b",
960
access=u"readwrite")
961
def checker_running_dbus_property(self, value=None):
2260
self.checker_command = str(value)
2261
2262
# CheckerRunning - property
2263
@dbus_service_property(_interface,
2264
signature="b",
2265
access="readwrite")
2266
def CheckerRunning_dbus_property(self, value=None):
962
2267
if value is None: # get
963
2268
return dbus.Boolean(self.checker is not None)
964
2269
if value:
965
2270
self.start_checker()
966
2271
else:
967
2272
self.stop_checker()
968
969
# object_path - property
970
@dbus_service_property(_interface, signature=u"o", access=u"read")
971
def object_path_dbus_property(self):
972
return self.dbus_object_path # is already a dbus.ObjectPath
973
974
# secret = property
975
@dbus_service_property(_interface, signature=u"ay",
976
access=u"write", byte_arrays=True)
977
def secret_dbus_property(self, value):
978
self.secret = str(value)
979
2273
2274
# ObjectPath - property
2275
@dbus_annotations(
2276
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2277
"org.freedesktop.DBus.Deprecated": "true"})
2278
@dbus_service_property(_interface, signature="o", access="read")
2279
def ObjectPath_dbus_property(self):
2280
return self.dbus_object_path # is already a dbus.ObjectPath
2281
2282
# Secret = property
2283
@dbus_annotations(
2284
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2285
"invalidates"})
2286
@dbus_service_property(_interface,
2287
signature="ay",
2288
access="write",
2289
byte_arrays=True)
2290
def Secret_dbus_property(self, value):
2291
self.secret = bytes(value)
2292
980
2293
del _interface
981
2294
982
2295
2296
class ProxyClient:
2297
def __init__(self, child_pipe, key_id, fpr, address):
2298
self._pipe = child_pipe
2299
self._pipe.send(("init", key_id, fpr, address))
2300
if not self._pipe.recv():
2301
raise KeyError(key_id or fpr)
2302
2303
def __getattribute__(self, name):
2304
if name == "_pipe":
2305
return super(ProxyClient, self).__getattribute__(name)
2306
self._pipe.send(("getattr", name))
2307
data = self._pipe.recv()
2308
if data[0] == "data":
2309
return data[1]
2310
if data[0] == "function":
2311
2312
def func(*args, **kwargs):
2313
self._pipe.send(("funcall", name, args, kwargs))
2314
return self._pipe.recv()[1]
2315
2316
return func
2317
2318
def __setattr__(self, name, value):
2319
if name == "_pipe":
2320
return super(ProxyClient, self).__setattr__(name, value)
2321
self._pipe.send(("setattr", name, value))
2322
2323
983
2324
class ClientHandler(socketserver.BaseRequestHandler, object):
984
2325
"""A class to handle client connections.
985
2326
986
2327
Instantiated once for each connection to handle it.
987
2328
Note: This will run in its own forked process."""
988
2329
989
2330
def handle(self):
990
logger.info(u"TCP connection from: %s",
991
unicode(self.client_address))
992
logger.debug(u"IPC Pipe FD: %d", self.server.pipe[1])
993
# Open IPC pipe to parent process
994
with closing(os.fdopen(self.server.pipe[1], u"w", 1)) as ipc:
995
session = (gnutls.connection
996
.ClientSession(self.request,
997
gnutls.connection
998
.X509Credentials()))
999
1000
line = self.request.makefile().readline()
1001
logger.debug(u"Protocol version: %r", line)
1002
try:
1003
if int(line.strip().split()[0]) > 1:
1004
raise RuntimeError
1005
except (ValueError, IndexError, RuntimeError), error:
1006
logger.error(u"Unknown protocol version: %s", error)
1007
return
1008
1009
# Note: gnutls.connection.X509Credentials is really a
1010
# generic GnuTLS certificate credentials object so long as
1011
# no X.509 keys are added to it. Therefore, we can use it
1012
# here despite using OpenPGP certificates.
1013
1014
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1015
# u"+AES-256-CBC", u"+SHA1",
1016
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1017
# u"+DHE-DSS"))
2331
with contextlib.closing(self.server.child_pipe) as child_pipe:
2332
log.info("TCP connection from: %s",
2333
str(self.client_address))
2334
log.debug("Pipe FD: %d", self.server.child_pipe.fileno())
2335
2336
session = gnutls.ClientSession(self.request)
2337
2338
# priority = ":".join(("NONE", "+VERS-TLS1.1",
2339
# "+AES-256-CBC", "+SHA1",
2340
# "+COMP-NULL", "+CTYPE-OPENPGP",
2341
# "+DHE-DSS"))
1018
2342
# Use a fallback default, since this MUST be set.
1019
2343
priority = self.server.gnutls_priority
1020
2344
if priority is None:
1021
priority = u"NORMAL"
1022
(gnutls.library.functions
1023
.gnutls_priority_set_direct(session._c_object,
1024
priority, None))
1025
2345
priority = "NORMAL"
2346
gnutls.priority_set_direct(session,
2347
priority.encode("utf-8"), None)
2348
2349
# Start communication using the Mandos protocol
2350
# Get protocol number
2351
line = self.request.makefile().readline()
2352
log.debug("Protocol version: %r", line)
2353
try:
2354
if int(line.strip().split()[0]) > 1:
2355
raise RuntimeError(line)
2356
except (ValueError, IndexError, RuntimeError) as error:
2357
log.error("Unknown protocol version: %s", error)
2358
return
2359
2360
# Start GnuTLS connection
1026
2361
try:
1027
2362
session.handshake()
1028
except gnutls.errors.GNUTLSError, error:
1029
logger.warning(u"Handshake failed: %s", error)
2363
except gnutls.Error as error:
2364
log.warning("Handshake failed: %s", error)
1030
2365
# Do not run session.bye() here: the session is not
1031
2366
# established. Just abandon the request.
1032
2367
return
1033
logger.debug(u"Handshake succeeded")
2368
log.debug("Handshake succeeded")
2369
2370
approval_required = False
1034
2371
try:
1035
fpr = self.fingerprint(self.peer_certificate(session))
1036
except (TypeError, gnutls.errors.GNUTLSError), error:
1037
logger.warning(u"Bad certificate: %s", error)
1038
session.bye()
1039
return
1040
logger.debug(u"Fingerprint: %s", fpr)
1041
1042
for c in self.server.clients:
1043
if c.fingerprint == fpr:
1044
client = c
1045
break
1046
else:
1047
ipc.write(u"NOTFOUND %s %s\n"
1048
% (fpr, unicode(self.client_address)))
1049
session.bye()
1050
return
1051
# Have to check if client.still_valid(), since it is
1052
# possible that the client timed out while establishing
1053
# the GnuTLS session.
1054
if not client.still_valid():
1055
ipc.write(u"INVALID %s\n" % client.name)
1056
session.bye()
1057
return
1058
ipc.write(u"SENDING %s\n" % client.name)
1059
sent_size = 0
1060
while sent_size < len(client.secret):
1061
sent = session.send(client.secret[sent_size:])
1062
logger.debug(u"Sent: %d, remaining: %d",
1063
sent, len(client.secret)
1064
- (sent_size + sent))
1065
sent_size += sent
1066
session.bye()
1067
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,
2396
self.client_address)
2397
except KeyError:
2398
return
2399
2400
if client.approval_delay:
2401
delay = client.approval_delay
2402
client.approvals_pending += 1
2403
approval_required = True
2404
2405
while True:
2406
if not client.enabled:
2407
log.info("Client %s is disabled", client.name)
2408
if self.server.use_dbus:
2409
# Emit D-Bus signal
2410
client.Rejected("Disabled")
2411
return
2412
2413
if client.approved or not client.approval_delay:
2414
# We are approved or approval is disabled
2415
break
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",
2426
client.name)
2427
if self.server.use_dbus:
2428
# Emit D-Bus signal
2429
client.Rejected("Denied")
2430
return
2431
2432
# wait until timeout or approved
2433
time = datetime.datetime.now()
2434
client.changedstate.acquire()
2435
client.changedstate.wait(delay.total_seconds())
2436
client.changedstate.release()
2437
time2 = datetime.datetime.now()
2438
if (time2 - time) >= delay:
2439
if not client.approved_by_default:
2440
log.warning("Client %s timed out while"
2441
" waiting for approval",
2442
client.name)
2443
if self.server.use_dbus:
2444
# Emit D-Bus signal
2445
client.Rejected("Approval timed out")
2446
return
2447
else:
2448
break
2449
else:
2450
delay -= time2 - time
2451
2452
try:
2453
session.send(client.secret)
2454
except gnutls.Error as error:
2455
log.warning("gnutls send failed", exc_info=error)
2456
return
2457
2458
log.info("Sending secret to %s", client.name)
2459
# bump the timeout using extended_timeout
2460
client.bump_timeout(client.extended_timeout)
2461
if self.server.use_dbus:
2462
# Emit D-Bus signal
2463
client.GotSecret()
2464
2465
finally:
2466
if approval_required:
2467
client.approvals_pending -= 1
2468
try:
2469
session.bye()
2470
except gnutls.Error as error:
2471
log.warning("GnuTLS bye failed", exc_info=error)
2472
1068
2473
@staticmethod
1069
2474
def peer_certificate(session):
1070
"Return the peer's OpenPGP certificate as a bytestring"
1071
# If not an OpenPGP certificate...
1072
if (gnutls.library.functions
1073
.gnutls_certificate_type_get(session._c_object)
1074
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1075
# ...do the normal thing
1076
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""
1077
2491
list_size = ctypes.c_uint(1)
1078
cert_list = (gnutls.library.functions
1079
.gnutls_certificate_get_peers
1080
(session._c_object, ctypes.byref(list_size)))
2492
cert_list = (gnutls.certificate_get_peers
2493
(session, ctypes.byref(list_size)))
1081
2494
if not bool(cert_list) and list_size.value != 0:
1082
raise gnutls.errors.GNUTLSError(u"error getting peer"
1083
u" certificate")
2495
raise gnutls.Error("error getting peer certificate")
1084
2496
if list_size.value == 0:
1085
2497
return None
1086
2498
cert = cert_list[0]
1087
2499
return ctypes.string_at(cert.data, cert.size)
1088
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
1089
2536
@staticmethod
1090
2537
def fingerprint(openpgp):
1091
2538
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1092
2539
# New GnuTLS "datum" with the OpenPGP public key
1093
datum = (gnutls.library.types
1094
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1095
ctypes.POINTER
1096
(ctypes.c_ubyte)),
1097
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)))
1098
2544
# New empty GnuTLS certificate
1099
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1100
(gnutls.library.functions
1101
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2545
crt = gnutls.openpgp_crt_t()
2546
gnutls.openpgp_crt_init(ctypes.byref(crt))
1102
2547
# Import the OpenPGP public key into the certificate
1103
(gnutls.library.functions
1104
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1105
gnutls.library.constants
1106
.GNUTLS_OPENPGP_FMT_RAW))
2548
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2549
gnutls.OPENPGP_FMT_RAW)
1107
2550
# Verify the self signature in the key
1108
2551
crtverify = ctypes.c_uint()
1109
(gnutls.library.functions
1110
.gnutls_openpgp_crt_verify_self(crt, 0,
1111
ctypes.byref(crtverify)))
2552
gnutls.openpgp_crt_verify_self(crt, 0,
2553
ctypes.byref(crtverify))
1112
2554
if crtverify.value != 0:
1113
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1114
raise (gnutls.errors.CertificateSecurityError
1115
(u"Verify failed"))
2555
gnutls.openpgp_crt_deinit(crt)
2556
raise gnutls.CertificateSecurityError(code
2557
=crtverify.value)
1116
2558
# New buffer for the fingerprint
1117
2559
buf = ctypes.create_string_buffer(20)
1118
2560
buf_len = ctypes.c_size_t()
1119
2561
# Get the fingerprint from the certificate into the buffer
1120
(gnutls.library.functions
1121
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1122
ctypes.byref(buf_len)))
2562
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2563
ctypes.byref(buf_len))
1123
2564
# Deinit the certificate
1124
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2565
gnutls.openpgp_crt_deinit(crt)
1125
2566
# Convert the buffer to a Python bytestring
1126
2567
fpr = ctypes.string_at(buf, buf_len.value)
1127
2568
# Convert the bytestring to hexadecimal notation
1128
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2569
hex_fpr = binascii.hexlify(fpr).upper()
1129
2570
return hex_fpr
1130
2571
1131
2572
1132
class ForkingMixInWithPipe(socketserver.ForkingMixIn, object):
1133
"""Like socketserver.ForkingMixIn, but also pass a pipe."""
2573
class MultiprocessingMixIn:
2574
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2575
2576
def sub_process_main(self, request, address):
2577
try:
2578
self.finish_request(request, address)
2579
except Exception:
2580
self.handle_error(request, address)
2581
self.close_request(request)
2582
2583
def process_request(self, request, address):
2584
"""Start a new process to process the request."""
2585
proc = multiprocessing.Process(target=self.sub_process_main,
2586
args=(request, address))
2587
proc.start()
2588
return proc
2589
2590
2591
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
2592
""" adds a pipe to the MixIn """
2593
1134
2594
def process_request(self, request, client_address):
1135
2595
"""Overrides and wraps the original process_request().
1136
2596
1137
2597
This function creates a new pipe in self.pipe
1138
2598
"""
1139
self.pipe = os.pipe()
1140
super(ForkingMixInWithPipe,
1141
self).process_request(request, client_address)
1142
os.close(self.pipe[1]) # close write end
1143
self.add_pipe(self.pipe[0])
1144
def add_pipe(self, pipe):
2599
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2600
2601
proc = MultiprocessingMixIn.process_request(self, request,
2602
client_address)
2603
self.child_pipe.close()
2604
self.add_pipe(parent_pipe, proc)
2605
2606
def add_pipe(self, parent_pipe, proc):
1145
2607
"""Dummy function; override as necessary"""
1146
os.close(pipe)
1147
1148
1149
class IPv6_TCPServer(ForkingMixInWithPipe,
1150
socketserver.TCPServer, object):
1151
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1152
2608
raise NotImplementedError()
2609
2610
2611
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2612
socketserver.TCPServer):
2613
"""IPv6-capable TCP server. Accepts None as address and/or port
2614
1153
2615
Attributes:
1154
2616
enabled: Boolean; whether this server is activated yet
1155
2617
interface: None or a network interface name (string)
1156
2618
use_ipv6: Boolean; to use IPv6 or not
1157
2619
"""
2620
1158
2621
def __init__(self, server_address, RequestHandlerClass,
1159
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
"""
1160
2628
self.interface = interface
1161
2629
if use_ipv6:
1162
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.
1163
2658
socketserver.TCPServer.__init__(self, server_address,
1164
2659
RequestHandlerClass)
2660
1165
2661
def server_bind(self):
1166
2662
"""This overrides the normal server_bind() function
1167
2663
to bind to an interface if one was specified, and also NOT to
1168
2664
bind to an address or port if they were not specified."""
2665
global SO_BINDTODEVICE
1169
2666
if self.interface is not None:
1170
2667
if SO_BINDTODEVICE is None:
1171
logger.error(u"SO_BINDTODEVICE does not exist;"
1172
u" cannot bind to interface %s",
1173
self.interface)
1174
else:
1175
try:
1176
self.socket.setsockopt(socket.SOL_SOCKET,
1177
SO_BINDTODEVICE,
1178
str(self.interface
1179
+ u'\0'))
1180
except socket.error, error:
1181
if error[0] == errno.EPERM:
1182
logger.error(u"No permission to"
1183
u" bind to interface %s",
1184
self.interface)
1185
elif error[0] == errno.ENOPROTOOPT:
1186
logger.error(u"SO_BINDTODEVICE not available;"
1187
u" cannot bind to interface %s",
1188
self.interface)
1189
else:
1190
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
1191
2688
# Only bind(2) the socket if we really need to.
1192
2689
if self.server_address[0] or self.server_address[1]:
2690
if self.server_address[1]:
2691
self.allow_reuse_address = True
1193
2692
if not self.server_address[0]:
1194
2693
if self.address_family == socket.AF_INET6:
1195
any_address = u"::" # in6addr_any
2694
any_address = "::" # in6addr_any
1196
2695
else:
1197
any_address = socket.INADDR_ANY
2696
any_address = "0.0.0.0" # INADDR_ANY
1198
2697
self.server_address = (any_address,
1199
2698
self.server_address[1])
1200
2699
elif not self.server_address[1]:
1201
self.server_address = (self.server_address[0],
1202
0)
2700
self.server_address = (self.server_address[0], 0)
1203
2701
# if self.interface:
1204
2702
# self.server_address = (self.server_address[0],
1205
2703
# 0, # port
1211
2709
1212
2710
class MandosServer(IPv6_TCPServer):
1213
2711
"""Mandos server.
1214
2712
1215
2713
Attributes:
1216
2714
clients: set of Client objects
1217
2715
gnutls_priority GnuTLS priority string
1218
2716
use_dbus: Boolean; to emit D-Bus signals or not
1219
1220
Assumes a gobject.MainLoop event loop.
2717
2718
Assumes a GLib.MainLoop event loop.
1221
2719
"""
2720
1222
2721
def __init__(self, server_address, RequestHandlerClass,
1223
interface=None, use_ipv6=True, clients=None,
1224
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):
1225
2728
self.enabled = False
1226
2729
self.clients = clients
1227
2730
if self.clients is None:
1228
self.clients = set()
2731
self.clients = {}
1229
2732
self.use_dbus = use_dbus
1230
2733
self.gnutls_priority = gnutls_priority
1231
2734
IPv6_TCPServer.__init__(self, server_address,
1232
2735
RequestHandlerClass,
1233
interface = interface,
1234
use_ipv6 = use_ipv6)
2736
interface=interface,
2737
use_ipv6=use_ipv6,
2738
socketfd=socketfd)
2739
1235
2740
def server_activate(self):
1236
2741
if self.enabled:
1237
2742
return socketserver.TCPServer.server_activate(self)
2743
1238
2744
def enable(self):
1239
2745
self.enabled = True
1240
def add_pipe(self, pipe):
2746
2747
def add_pipe(self, parent_pipe, proc):
1241
2748
# Call "handle_ipc" for both data and EOF events
1242
gobject.io_add_watch(pipe, gobject.IO_IN | gobject.IO_HUP,
1243
self.handle_ipc)
1244
def handle_ipc(self, source, condition, file_objects={}):
1245
condition_names = {
1246
gobject.IO_IN: u"IN", # There is data to read.
1247
gobject.IO_OUT: u"OUT", # Data can be written (without
1248
# blocking).
1249
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1250
gobject.IO_ERR: u"ERR", # Error condition.
1251
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1252
# broken, usually for pipes and
1253
# sockets).
1254
}
1255
conditions_string = ' | '.join(name
1256
for cond, name in
1257
condition_names.iteritems()
1258
if cond & condition)
1259
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1260
conditions_string)
1261
1262
# Turn the pipe file descriptor into a Python file object
1263
if source not in file_objects:
1264
file_objects[source] = os.fdopen(source, u"r", 1)
1265
1266
# Read a line from the file object
1267
cmdline = file_objects[source].readline()
1268
if not cmdline: # Empty line means end of file
1269
# close the IPC pipe
1270
file_objects[source].close()
1271
del file_objects[source]
1272
1273
# Stop calling this function
1274
return False
1275
1276
logger.debug(u"IPC command: %r", cmdline)
1277
1278
# Parse and act on command
1279
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1280
1281
if cmd == u"NOTFOUND":
1282
logger.warning(u"Client not found for fingerprint: %s",
1283
args)
1284
if self.use_dbus:
1285
# Emit D-Bus signal
1286
mandos_dbus_service.ClientNotFound(args)
1287
elif cmd == u"INVALID":
1288
for client in self.clients:
1289
if client.name == args:
1290
logger.warning(u"Client %s is invalid", args)
1291
if self.use_dbus:
1292
# Emit D-Bus signal
1293
client.Rejected()
1294
break
1295
else:
1296
logger.error(u"Unknown client %s is invalid", args)
1297
elif cmd == u"SENDING":
1298
for client in self.clients:
1299
if client.name == args:
1300
logger.info(u"Sending secret to %s", client.name)
1301
client.checked_ok()
1302
if self.use_dbus:
1303
# Emit D-Bus signal
1304
client.GotSecret()
1305
break
1306
else:
1307
logger.error(u"Sending secret to unknown client %s",
1308
args)
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
2763
proc.join()
2764
return False
2765
2766
# Read a request from the child
2767
request = parent_pipe.recv()
2768
command = request[0]
2769
2770
if command == "init":
2771
key_id = request[1].decode("ascii")
2772
fpr = request[2].decode("ascii")
2773
address = request[3]
2774
2775
for c in self.clients.values():
2776
if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"
2777
"27AE41E4649B934CA495991B7852B855"):
2778
continue
2779
if key_id and c.key_id == key_id:
2780
client = c
2781
break
2782
if fpr and c.fingerprint == fpr:
2783
client = c
2784
break
2785
else:
2786
log.info("Client not found for key ID: %s, address:"
2787
" %s", key_id or fpr, address)
2788
if self.use_dbus:
2789
# Emit D-Bus signal
2790
mandos_dbus_service.ClientNotFound(key_id or fpr,
2791
address[0])
2792
parent_pipe.send(False)
2793
return False
2794
2795
GLib.io_add_watch(
2796
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2797
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2798
functools.partial(self.handle_ipc,
2799
parent_pipe=parent_pipe,
2800
proc=proc,
2801
client_object=client))
2802
parent_pipe.send(True)
2803
# remove the old hook in favor of the new above hook on
2804
# same fileno
2805
return False
2806
if command == "funcall":
2807
funcname = request[1]
2808
args = request[2]
2809
kwargs = request[3]
2810
2811
parent_pipe.send(("data", getattr(client_object,
2812
funcname)(*args,
2813
**kwargs)))
2814
2815
if command == "getattr":
2816
attrname = request[1]
2817
if isinstance(client_object.__getattribute__(attrname),
2818
collections.abc.Callable):
2819
parent_pipe.send(("function", ))
2820
else:
2821
parent_pipe.send((
2822
"data", client_object.__getattribute__(attrname)))
2823
2824
if command == "setattr":
2825
attrname = request[1]
2826
value = request[2]
2827
setattr(client_object, attrname, value)
2828
2829
return True
2830
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
1309
2925
else:
1310
logger.error(u"Unknown IPC command: %r", cmdline)
1311
1312
# Keep calling this function
1313
return True
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
1314
2931
1315
2932
1316
2933
def string_to_delta(interval):
1317
2934
"""Parse a string and return a datetime.timedelta
1318
1319
>>> string_to_delta(u'7d')
1320
datetime.timedelta(7)
1321
>>> string_to_delta(u'60s')
1322
datetime.timedelta(0, 60)
1323
>>> string_to_delta(u'60m')
1324
datetime.timedelta(0, 3600)
1325
>>> string_to_delta(u'24h')
1326
datetime.timedelta(1)
1327
>>> string_to_delta(u'1w')
1328
datetime.timedelta(7)
1329
>>> string_to_delta(u'5m 30s')
1330
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
1331
2948
"""
2949
2950
try:
2951
return rfc3339_duration_to_delta(interval)
2952
except ValueError:
2953
pass
2954
1332
2955
timevalue = datetime.timedelta(0)
1333
2956
for s in interval.split():
1334
2957
try:
1335
suffix = unicode(s[-1])
2958
suffix = s[-1]
1336
2959
value = int(s[:-1])
1337
if suffix == u"d":
2960
if suffix == "d":
1338
2961
delta = datetime.timedelta(value)
1339
elif suffix == u"s":
2962
elif suffix == "s":
1340
2963
delta = datetime.timedelta(0, value)
1341
elif suffix == u"m":
2964
elif suffix == "m":
1342
2965
delta = datetime.timedelta(0, 0, 0, 0, value)
1343
elif suffix == u"h":
2966
elif suffix == "h":
1344
2967
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1345
elif suffix == u"w":
2968
elif suffix == "w":
1346
2969
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1347
2970
else:
1348
raise ValueError
1349
except (ValueError, IndexError):
1350
raise ValueError
2971
raise ValueError("Unknown suffix {!r}".format(suffix))
2972
except IndexError as e:
2973
raise ValueError(*(e.args))
1351
2974
timevalue += delta
1352
2975
return timevalue
1353
2976
1354
2977
1355
def if_nametoindex(interface):
1356
"""Call the C function if_nametoindex(), or equivalent
1357
1358
Note: This function cannot accept a unicode string."""
1359
global if_nametoindex
1360
try:
1361
if_nametoindex = (ctypes.cdll.LoadLibrary
1362
(ctypes.util.find_library(u"c"))
1363
.if_nametoindex)
1364
except (OSError, AttributeError):
1365
logger.warning(u"Doing if_nametoindex the hard way")
1366
def if_nametoindex(interface):
1367
"Get an interface index the hard way, i.e. using fcntl()"
1368
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1369
with closing(socket.socket()) as s:
1370
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1371
struct.pack(str(u"16s16x"),
1372
interface))
1373
interface_index = struct.unpack(str(u"I"),
1374
ifreq[16:20])[0]
1375
return interface_index
1376
return if_nametoindex(interface)
1377
1378
1379
def daemon(nochdir = False, noclose = False):
2978
def daemon(nochdir=False, noclose=False):
1380
2979
"""See daemon(3). Standard BSD Unix function.
1381
2980
1382
2981
This should really exist as os.daemon, but it doesn't (yet)."""
1383
2982
if os.fork():
1384
2983
sys.exit()
1385
2984
os.setsid()
1386
2985
if not nochdir:
1387
os.chdir(u"/")
2986
os.chdir("/")
1388
2987
if os.fork():
1389
2988
sys.exit()
1390
2989
if not noclose:
1391
2990
# Close all standard open file descriptors
1392
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2991
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1393
2992
if not stat.S_ISCHR(os.fstat(null).st_mode):
1394
2993
raise OSError(errno.ENODEV,
1395
u"%s not a character device"
1396
% os.path.devnull)
2994
"{} not a character device"
2995
.format(os.devnull))
1397
2996
os.dup2(null, sys.stdin.fileno())
1398
2997
os.dup2(null, sys.stdout.fileno())
1399
2998
os.dup2(null, sys.stderr.fileno())
1402
3001
1403
3002
1404
3003
def main():
1405
3004
1406
3005
##################################################################
1407
3006
# Parsing of options, both command line and config file
1408
1409
parser = optparse.OptionParser(version = "%%prog %s" % version)
1410
parser.add_option("-i", u"--interface", type=u"string",
1411
metavar="IF", help=u"Bind to interface IF")
1412
parser.add_option("-a", u"--address", type=u"string",
1413
help=u"Address to listen for requests on")
1414
parser.add_option("-p", u"--port", type=u"int",
1415
help=u"Port number to receive requests on")
1416
parser.add_option("--check", action=u"store_true",
1417
help=u"Run self-test")
1418
parser.add_option("--debug", action=u"store_true",
1419
help=u"Debug mode; run in foreground and log to"
1420
u" terminal")
1421
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1422
u" priority string (see GnuTLS documentation)")
1423
parser.add_option("--servicename", type=u"string",
1424
metavar=u"NAME", help=u"Zeroconf service name")
1425
parser.add_option("--configdir", type=u"string",
1426
default=u"/etc/mandos", metavar=u"DIR",
1427
help=u"Directory to search for configuration"
1428
u" files")
1429
parser.add_option("--no-dbus", action=u"store_false",
1430
dest=u"use_dbus", help=u"Do not provide D-Bus"
1431
u" system bus interface")
1432
parser.add_option("--no-ipv6", action=u"store_false",
1433
dest=u"use_ipv6", help=u"Do not use IPv6")
1434
options = parser.parse_args()[0]
1435
1436
if options.check:
1437
import doctest
1438
doctest.testmod()
1439
sys.exit()
1440
3007
3008
parser = argparse.ArgumentParser()
3009
parser.add_argument("-v", "--version", action="version",
3010
version="%(prog)s {}".format(version),
3011
help="show version number and exit")
3012
parser.add_argument("-i", "--interface", metavar="IF",
3013
help="Bind to interface IF")
3014
parser.add_argument("-a", "--address",
3015
help="Address to listen for requests on")
3016
parser.add_argument("-p", "--port", type=int,
3017
help="Port number to receive requests on")
3018
parser.add_argument("--check", action="store_true",
3019
help="Run self-test")
3020
parser.add_argument("--debug", action="store_true",
3021
help="Debug mode; run in foreground and log"
3022
" to terminal", default=None)
3023
parser.add_argument("--debuglevel", metavar="LEVEL",
3024
help="Debug level for stdout output")
3025
parser.add_argument("--priority", help="GnuTLS"
3026
" priority string (see GnuTLS documentation)")
3027
parser.add_argument("--servicename",
3028
metavar="NAME", help="Zeroconf service name")
3029
parser.add_argument("--configdir",
3030
default="/etc/mandos", metavar="DIR",
3031
help="Directory to search for configuration"
3032
" files")
3033
parser.add_argument("--no-dbus", action="store_false",
3034
dest="use_dbus", help="Do not provide D-Bus"
3035
" system bus interface", default=None)
3036
parser.add_argument("--no-ipv6", action="store_false",
3037
dest="use_ipv6", help="Do not use IPv6",
3038
default=None)
3039
parser.add_argument("--no-restore", action="store_false",
3040
dest="restore", help="Do not restore stored"
3041
" state", default=None)
3042
parser.add_argument("--socket", type=int,
3043
help="Specify a file descriptor to a network"
3044
" socket to use instead of creating one")
3045
parser.add_argument("--statedir", metavar="DIR",
3046
help="Directory to save/restore state in")
3047
parser.add_argument("--foreground", action="store_true",
3048
help="Run in foreground", default=None)
3049
parser.add_argument("--no-zeroconf", action="store_false",
3050
dest="zeroconf", help="Do not use Zeroconf",
3051
default=None)
3052
3053
options = parser.parse_args()
3054
1441
3055
# Default values for config file for server-global settings
1442
server_defaults = { u"interface": u"",
1443
u"address": u"",
1444
u"port": u"",
1445
u"debug": u"False",
1446
u"priority":
1447
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1448
u"servicename": u"Mandos",
1449
u"use_dbus": u"True",
1450
u"use_ipv6": u"True",
1451
}
1452
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
1453
3079
# Parse config file for server-global settings
1454
server_config = configparser.SafeConfigParser(server_defaults)
3080
server_config = configparser.ConfigParser(server_defaults)
1455
3081
del server_defaults
1456
server_config.read(os.path.join(options.configdir,
1457
u"mandos.conf"))
1458
# 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
1459
3084
server_settings = server_config.defaults()
1460
3085
# Use the appropriate methods on the non-string config options
1461
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1462
server_settings[option] = server_config.getboolean(u"DEFAULT",
3086
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3087
"foreground", "zeroconf"):
3088
server_settings[option] = server_config.getboolean("DEFAULT",
1463
3089
option)
1464
3090
if server_settings["port"]:
1465
server_settings["port"] = server_config.getint(u"DEFAULT",
1466
u"port")
3091
server_settings["port"] = server_config.getint("DEFAULT",
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"])
1467
3102
del server_config
1468
3103
1469
3104
# Override the settings from the config file with command line
1470
3105
# options, if set.
1471
for option in (u"interface", u"address", u"port", u"debug",
1472
u"priority", u"servicename", u"configdir",
1473
u"use_dbus", u"use_ipv6"):
3106
for option in ("interface", "address", "port", "debug",
3107
"priority", "servicename", "configdir", "use_dbus",
3108
"use_ipv6", "debuglevel", "restore", "statedir",
3109
"socket", "foreground", "zeroconf"):
1474
3110
value = getattr(options, option)
1475
3111
if value is not None:
1476
3112
server_settings[option] = value
1477
3113
del options
1478
3114
# Force all strings to be unicode
1479
3115
for option in server_settings.keys():
1480
if type(server_settings[option]) is str:
1481
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
1482
3126
# Now we have our good server settings in "server_settings"
1483
3127
1484
3128
##################################################################
1485
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
1486
3135
# For convenience
1487
debug = server_settings[u"debug"]
1488
use_dbus = server_settings[u"use_dbus"]
1489
use_ipv6 = server_settings[u"use_ipv6"]
1490
1491
if not debug:
1492
syslogger.setLevel(logging.WARNING)
1493
console.setLevel(logging.WARNING)
1494
1495
if server_settings[u"servicename"] != u"Mandos":
1496
syslogger.setFormatter(logging.Formatter
1497
(u'Mandos (%s) [%%(process)d]:'
1498
u' %%(levelname)s: %%(message)s'
1499
% server_settings[u"servicename"]))
1500
3136
debug = server_settings["debug"]
3137
debuglevel = server_settings["debuglevel"]
3138
use_dbus = server_settings["use_dbus"]
3139
use_ipv6 = server_settings["use_ipv6"]
3140
stored_state_path = os.path.join(server_settings["statedir"],
3141
stored_state_file)
3142
foreground = server_settings["foreground"]
3143
zeroconf = server_settings["zeroconf"]
3144
3145
if debug:
3146
initlogger(debug, logging.DEBUG)
3147
else:
3148
if not debuglevel:
3149
initlogger(debug)
3150
else:
3151
level = getattr(logging, debuglevel.upper())
3152
initlogger(debug, level)
3153
3154
if server_settings["servicename"] != "Mandos":
3155
syslogger.setFormatter(
3156
logging.Formatter("Mandos ({}) [%(process)d]:"
3157
" %(levelname)s: %(message)s".format(
3158
server_settings["servicename"])))
3159
1501
3160
# Parse config file with clients
1502
client_defaults = { u"timeout": u"1h",
1503
u"interval": u"5m",
1504
u"checker": u"fping -q -- %%(host)s",
1505
u"host": u"",
1506
}
1507
client_config = configparser.SafeConfigParser(client_defaults)
1508
client_config.read(os.path.join(server_settings[u"configdir"],
1509
u"clients.conf"))
1510
3161
client_config = configparser.ConfigParser(Client.client_defaults)
3162
client_config.read(os.path.join(server_settings["configdir"],
3163
"clients.conf"))
3164
1511
3165
global mandos_dbus_service
1512
3166
mandos_dbus_service = None
1513
1514
tcp_server = MandosServer((server_settings[u"address"],
1515
server_settings[u"port"]),
1516
ClientHandler,
1517
interface=server_settings[u"interface"],
1518
use_ipv6=use_ipv6,
1519
gnutls_priority=
1520
server_settings[u"priority"],
1521
use_dbus=use_dbus)
1522
pidfilename = u"/var/run/mandos.pid"
1523
try:
1524
pidfile = open(pidfilename, u"w")
1525
except IOError:
1526
logger.error(u"Could not open file %r", pidfilename)
1527
1528
try:
1529
uid = pwd.getpwnam(u"_mandos").pw_uid
1530
gid = pwd.getpwnam(u"_mandos").pw_gid
1531
except KeyError:
1532
try:
1533
uid = pwd.getpwnam(u"mandos").pw_uid
1534
gid = pwd.getpwnam(u"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
1535
3197
except KeyError:
1536
try:
1537
uid = pwd.getpwnam(u"nobody").pw_uid
1538
gid = pwd.getpwnam(u"nobody").pw_gid
1539
except KeyError:
1540
uid = 65534
1541
gid = 65534
3198
continue
3199
else:
3200
uid = 65534
3201
gid = 65534
1542
3202
try:
1543
3203
os.setgid(gid)
1544
3204
os.setuid(uid)
1545
except OSError, error:
1546
if error[0] != errno.EPERM:
1547
raise error
1548
1549
# Enable all possible GnuTLS debugging
3205
log.debug("Did setuid/setgid to %s:%s", uid, gid)
3206
except OSError as error:
3207
log.warning("Failed to setuid/setgid to %s:%s: %s", uid, gid,
3208
os.strerror(error.errno))
3209
if error.errno != errno.EPERM:
3210
raise
3211
1550
3212
if debug:
3213
# Enable all possible GnuTLS debugging
3214
1551
3215
# "Use a log level over 10 to enable all debugging options."
1552
3216
# - GnuTLS manual
1553
gnutls.library.functions.gnutls_global_set_log_level(11)
1554
1555
@gnutls.library.types.gnutls_log_func
3217
gnutls.global_set_log_level(11)
3218
3219
@gnutls.log_func
1556
3220
def debug_gnutls(level, string):
1557
logger.debug(u"GnuTLS: %s", string[:-1])
1558
1559
(gnutls.library.functions
1560
.gnutls_global_set_log_function(debug_gnutls))
1561
3221
log.debug("GnuTLS: %s",
3222
string[:-1].decode("utf-8", errors="replace"))
3223
3224
gnutls.global_set_log_function(debug_gnutls)
3225
3226
# Redirect stdin so all checkers get /dev/null
3227
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3228
os.dup2(null, sys.stdin.fileno())
3229
if null > 2:
3230
os.close(null)
3231
3232
# Need to fork before connecting to D-Bus
3233
if not foreground:
3234
# Close all input and output, do double fork, etc.
3235
daemon()
3236
3237
if gi.version_info < (3, 10, 2):
3238
# multiprocessing will use threads, so before we use GLib we
3239
# need to inform GLib that threads will be used.
3240
GLib.threads_init()
3241
1562
3242
global main_loop
1563
3243
# From the Avahi example code
1564
DBusGMainLoop(set_as_default=True )
1565
main_loop = gobject.MainLoop()
3244
DBusGMainLoop(set_as_default=True)
3245
main_loop = GLib.MainLoop()
1566
3246
bus = dbus.SystemBus()
1567
3247
# End of Avahi example code
1568
3248
if use_dbus:
1569
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1570
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1571
service = AvahiService(name = server_settings[u"servicename"],
1572
servicetype = u"_mandos._tcp",
1573
protocol = protocol, bus = bus)
1574
if server_settings["interface"]:
1575
service.interface = (if_nametoindex
1576
(str(server_settings[u"interface"])))
1577
3249
try:
3250
bus_name = dbus.service.BusName("se.recompile.Mandos",
3251
bus,
3252
do_not_queue=True)
3253
old_bus_name = dbus.service.BusName(
3254
"se.bsnet.fukt.Mandos", bus,
3255
do_not_queue=True)
3256
except dbus.exceptions.DBusException as e:
3257
log.error("Disabling D-Bus:", exc_info=e)
3258
use_dbus = False
3259
server_settings["use_dbus"] = False
3260
tcp_server.use_dbus = False
3261
if zeroconf:
3262
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3263
service = AvahiServiceToSyslog(
3264
name=server_settings["servicename"],
3265
servicetype="_mandos._tcp",
3266
protocol=protocol,
3267
bus=bus)
3268
if server_settings["interface"]:
3269
service.interface = if_nametoindex(
3270
server_settings["interface"].encode("utf-8"))
3271
3272
global multiprocessing_manager
3273
multiprocessing_manager = multiprocessing.Manager()
3274
1578
3275
client_class = Client
1579
3276
if use_dbus:
1580
client_class = functools.partial(ClientDBus, bus = bus)
1581
tcp_server.clients.update(set(
1582
client_class(name = section,
1583
config= dict(client_config.items(section)))
1584
for section in client_config.sections()))
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)
3405
try:
3406
client["secret"] = pgp.decrypt(
3407
client["encrypted_secret"],
3408
client_settings[client_name]["secret"])
3409
except PGPError:
3410
# If decryption fails, we use secret from new settings
3411
log.debug("Failed to decrypt %s old secret",
3412
client_name)
3413
client["secret"] = (client_settings[client_name]
3414
["secret"])
3415
3416
# Add/remove clients based on new changes made to config
3417
for client_name in (set(old_client_settings)
3418
- set(client_settings)):
3419
del clients_data[client_name]
3420
for client_name in (set(client_settings)
3421
- set(old_client_settings)):
3422
clients_data[client_name] = client_settings[client_name]
3423
3424
# Create all client objects
3425
for client_name, client in clients_data.items():
3426
tcp_server.clients[client_name] = client_class(
3427
name=client_name,
3428
settings=client,
3429
server_settings=server_settings)
3430
1585
3431
if not tcp_server.clients:
1586
logger.warning(u"No clients defined")
1587
1588
if debug:
1589
# Redirect stdin so all checkers get /dev/null
1590
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1591
os.dup2(null, sys.stdin.fileno())
1592
if null > 2:
1593
os.close(null)
1594
else:
1595
# No console logging
1596
logger.removeHandler(console)
1597
# Close all input and output, do double fork, etc.
1598
daemon()
1599
1600
try:
1601
with closing(pidfile):
3432
log.warning("No clients defined")
3433
3434
if not foreground:
3435
if pidfile is not None:
1602
3436
pid = os.getpid()
1603
pidfile.write(str(pid) + "\n")
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)
1604
3443
del pidfile
1605
except IOError:
1606
logger.error(u"Could not write to file %r with PID %d",
1607
pidfilename, pid)
1608
except NameError:
1609
# "pidfile" was never created
1610
pass
1611
del pidfilename
1612
1613
def cleanup():
1614
"Cleanup function; run on exit"
1615
service.cleanup()
1616
1617
while tcp_server.clients:
1618
client = tcp_server.clients.pop()
1619
client.disable_hook = None
1620
client.disable()
1621
1622
atexit.register(cleanup)
1623
1624
if not debug:
1625
signal.signal(signal.SIGINT, signal.SIG_IGN)
1626
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1627
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1628
3444
del pidfilename
3445
3446
for termsig in (signal.SIGHUP, signal.SIGTERM):
3447
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3448
lambda: main_loop.quit() and False)
3449
1629
3450
if use_dbus:
1630
class MandosDBusService(dbus.service.Object):
3451
3452
@alternate_dbus_interfaces(
3453
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3454
class MandosDBusService(DBusObjectWithObjectManager):
1631
3455
"""A D-Bus proxy object"""
3456
1632
3457
def __init__(self):
1633
dbus.service.Object.__init__(self, bus, u"/")
1634
_interface = u"se.bsnet.fukt.Mandos"
1635
1636
@dbus.service.signal(_interface, signature=u"oa{sv}")
1637
def ClientAdded(self, objpath, properties):
1638
"D-Bus signal"
1639
pass
1640
1641
@dbus.service.signal(_interface, signature=u"s")
1642
def ClientNotFound(self, fingerprint):
1643
"D-Bus signal"
1644
pass
1645
1646
@dbus.service.signal(_interface, signature=u"os")
3458
dbus.service.Object.__init__(self, bus, "/")
3459
3460
_interface = "se.recompile.Mandos"
3461
3462
@dbus.service.signal(_interface, signature="o")
3463
def ClientAdded(self, objpath):
3464
"D-Bus signal"
3465
pass
3466
3467
@dbus.service.signal(_interface, signature="ss")
3468
def ClientNotFound(self, key_id, address):
3469
"D-Bus signal"
3470
pass
3471
3472
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3473
"true"})
3474
@dbus.service.signal(_interface, signature="os")
1647
3475
def ClientRemoved(self, objpath, name):
1648
3476
"D-Bus signal"
1649
3477
pass
1650
1651
@dbus.service.method(_interface, out_signature=u"ao")
3478
3479
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3480
"true"})
3481
@dbus.service.method(_interface, out_signature="ao")
1652
3482
def GetAllClients(self):
1653
3483
"D-Bus method"
1654
return dbus.Array(c.dbus_object_path
1655
for c in tcp_server.clients)
1656
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"})
1657
3489
@dbus.service.method(_interface,
1658
out_signature=u"a{oa{sv}}")
3490
out_signature="a{oa{sv}}")
1659
3491
def GetAllClientsWithProperties(self):
1660
3492
"D-Bus method"
1661
3493
return dbus.Dictionary(
1662
((c.dbus_object_path, c.GetAll(u""))
1663
for c in tcp_server.clients),
1664
signature=u"oa{sv}")
1665
1666
@dbus.service.method(_interface, in_signature=u"o")
3494
{c.dbus_object_path: c.GetAll(
3495
"se.recompile.Mandos.Client")
3496
for c in tcp_server.clients.values()},
3497
signature="oa{sv}")
3498
3499
@dbus.service.method(_interface, in_signature="o")
1667
3500
def RemoveClient(self, object_path):
1668
3501
"D-Bus method"
1669
for c in tcp_server.clients:
3502
for c in tcp_server.clients.values():
1670
3503
if c.dbus_object_path == object_path:
1671
tcp_server.clients.remove(c)
3504
del tcp_server.clients[c.name]
1672
3505
c.remove_from_connection()
1673
# Don't signal anything except ClientRemoved
1674
c.disable(signal=False)
1675
# Emit D-Bus signal
1676
self.ClientRemoved(object_path, c.name)
3506
# Don't signal the disabling
3507
c.disable(quiet=True)
3508
# Emit D-Bus signal for removal
3509
self.client_removed_signal(c)
1677
3510
return
1678
raise KeyError
1679
3511
raise KeyError(object_path)
3512
1680
3513
del _interface
1681
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
1682
3551
mandos_dbus_service = MandosDBusService()
1683
1684
for client in tcp_server.clients:
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
3558
def cleanup():
3559
"Cleanup function; run on exit"
3560
if zeroconf:
3561
service.cleanup()
3562
3563
mp.active_children()
3564
wn.close()
3565
if not (tcp_server.clients or client_settings):
3566
return
3567
3568
# Store client before exiting. Secrets are encrypted with key
3569
# based on what config file has. If config file is
3570
# removed/edited, old secret will thus be unrecovable.
3571
clients = {}
3572
with PGPEngine() as pgp:
3573
for client in tcp_server.clients.values():
3574
key = client_settings[client.name]["secret"]
3575
client.encrypted_secret = pgp.encrypt(client.secret,
3576
key)
3577
client_dict = {}
3578
3579
# A list of attributes that can not be pickled
3580
# + secret.
3581
exclude = {"bus", "changedstate", "secret",
3582
"checker", "server_settings"}
3583
for name, typ in inspect.getmembers(dbus.service
3584
.Object):
3585
exclude.add(name)
3586
3587
client_dict["encrypted_secret"] = (client
3588
.encrypted_secret)
3589
for attr in client.client_structure:
3590
if attr not in exclude:
3591
client_dict[attr] = getattr(client, attr)
3592
3593
clients[client.name] = client_dict
3594
del client_settings[client.name]["secret"]
3595
3596
try:
3597
with tempfile.NamedTemporaryFile(
3598
mode="wb",
3599
suffix=".pickle",
3600
prefix="clients-",
3601
dir=os.path.dirname(stored_state_path),
3602
delete=False) as stored_state:
3603
pickle.dump((clients, client_settings), stored_state,
3604
protocol=2)
3605
tempname = stored_state.name
3606
os.rename(tempname, stored_state_path)
3607
except (IOError, OSError) as e:
3608
if not debug:
3609
try:
3610
os.remove(tempname)
3611
except NameError:
3612
pass
3613
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3614
log.warning("Could not save persistent state: %s",
3615
os.strerror(e.errno))
3616
else:
3617
log.warning("Could not save persistent state:",
3618
exc_info=e)
3619
raise
3620
3621
# Delete all clients, and settings from config
3622
while tcp_server.clients:
3623
name, client = tcp_server.clients.popitem()
3624
if use_dbus:
3625
client.remove_from_connection()
3626
# Don't signal the disabling
3627
client.disable(quiet=True)
3628
# Emit D-Bus signal for removal
3629
if use_dbus:
3630
mandos_dbus_service.client_removed_signal(client)
3631
client_settings.clear()
3632
3633
atexit.register(cleanup)
3634
3635
for client in tcp_server.clients.values():
1685
3636
if use_dbus:
1686
# Emit D-Bus signal
1687
mandos_dbus_service.ClientAdded(client.dbus_object_path,
1688
client.GetAll(u""))
1689
client.enable()
1690
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
1691
3643
tcp_server.enable()
1692
3644
tcp_server.server_activate()
1693
3645
1694
3646
# Find out what port we got
1695
service.port = tcp_server.socket.getsockname()[1]
3647
if zeroconf:
3648
service.port = tcp_server.socket.getsockname()[1]
1696
3649
if use_ipv6:
1697
logger.info(u"Now listening on address %r, port %d,"
1698
" flowinfo %d, scope_id %d"
1699
% tcp_server.socket.getsockname())
3650
log.info("Now listening on address %r, port %d, flowinfo %d,"
3651
" scope_id %d", *tcp_server.socket.getsockname())
1700
3652
else: # IPv4
1701
logger.info(u"Now listening on address %r, port %d"
1702
% tcp_server.socket.getsockname())
1703
1704
#service.interface = tcp_server.socket.getsockname()[3]
1705
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
1706
3658
try:
1707
# From the Avahi example code
1708
try:
1709
service.activate()
1710
except dbus.exceptions.DBusException, error:
1711
logger.critical(u"DBusException: %s", error)
1712
sys.exit(1)
1713
# End of Avahi example code
1714
1715
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1716
lambda *args, **kwargs:
1717
(tcp_server.handle_request
1718
(*args[2:], **kwargs) or True))
1719
1720
logger.debug(u"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")
1721
3676
main_loop.run()
1722
except AvahiError, error:
1723
logger.critical(u"AvahiError: %s", error)
3677
except AvahiError as error:
3678
log.critical("Avahi Error", exc_info=error)
3679
cleanup()
1724
3680
sys.exit(1)
1725
3681
except KeyboardInterrupt:
1726
3682
if debug:
1727
print >> sys.stderr
1728
logger.debug(u"Server received KeyboardInterrupt")
1729
logger.debug(u"Server exiting")
1730
1731
if __name__ == '__main__':
1732
main()
3683
print("", file=sys.stderr)
3684
log.debug("Server received KeyboardInterrupt")
3685
log.debug("Server exiting")
3686
# Must run before the D-Bus bus name gets deregistered
3687
cleanup()
3688
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