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- Committer: teddy at recompile
- Date: 2012-01-01 17:38:33 UTC
- Revision ID: teddy@recompile.se-20120101173833-ai39bif1w0ftuyyh
* Makefile (install-server): Add intro(8mandos) man page.
* network-hooks.d/bridge: Add copyright info and year.
* network-hooks.d/openvpn: - '' -
* network-hooks.d/wireless: - '' -
* network-hooks.d/bridge: Add copyright info and year.
* network-hooks.d/openvpn: - '' -
* network-hooks.d/wireless: - '' -
- files added:
- initramfs-tools-hook-conf
- files removed:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python3 -bI
2
# -*- coding: utf-8; lexical-binding: t -*-
3
#
1
#!/usr/bin/python
2
# -*- mode: python; coding: utf-8 -*-
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2022 Teddy Hogeborn
15
# Copyright © 2008-2022 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2012 Teddy Hogeborn
15
# Copyright © 2008-2012 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
28
#
26
#
29
27
# You should have received a copy of the GNU General Public License
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
32
31
# Contact the authors at <mandos@recompile.se>.
33
#
32
#
33
34
34
from __future__ import (division, absolute_import, print_function,
35
35
unicode_literals)
36
36
37
try:
38
from future_builtins import *
39
except ImportError:
40
pass
41
42
import sys
43
import unittest
37
import SocketServer as socketserver
38
import socket
44
39
import argparse
45
import logging
46
import os
47
try:
48
import SocketServer as socketserver
49
except ImportError:
50
import socketserver
51
import socket
52
40
import datetime
53
41
import errno
54
try:
55
import ConfigParser as configparser
56
except ImportError:
57
import configparser
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
49
import sys
58
50
import re
51
import os
59
52
import signal
60
53
import subprocess
61
54
import atexit
62
55
import stat
56
import logging
63
57
import logging.handlers
64
58
import pwd
65
59
import contextlib
66
60
import struct
67
61
import fcntl
68
62
import functools
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
63
import cPickle as pickle
73
64
import multiprocessing
74
65
import types
75
66
import binascii
76
67
import tempfile
77
import itertools
78
import collections
79
import codecs
80
import random
81
import shlex
82
68
83
69
import dbus
84
70
import dbus.service
85
import gi
86
from gi.repository import GLib
71
import gobject
72
import avahi
87
73
from dbus.mainloop.glib import DBusGMainLoop
88
74
import ctypes
89
75
import ctypes.util
90
76
import xml.dom.minidom
91
77
import inspect
92
93
if sys.version_info.major == 2:
94
__metaclass__ = type
95
str = unicode
96
input = raw_input
97
98
# Add collections.abc.Callable if it does not exist
99
try:
100
collections.abc.Callable
101
except AttributeError:
102
class abc:
103
Callable = collections.Callable
104
collections.abc = abc
105
del abc
106
107
# Add shlex.quote if it does not exist
108
try:
109
shlex.quote
110
except AttributeError:
111
shlex.quote = re.escape
112
113
# Show warnings by default
114
if not sys.warnoptions:
115
import warnings
116
warnings.simplefilter("default")
117
118
# Try to find the value of SO_BINDTODEVICE:
119
try:
120
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
121
# newer, and it is also the most natural place for it:
78
import GnuPGInterface
79
80
try:
122
81
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
123
82
except AttributeError:
124
83
try:
125
# This is where SO_BINDTODEVICE was up to and including Python
126
# 2.6, and also 3.2:
127
84
from IN import SO_BINDTODEVICE
128
85
except ImportError:
129
# In Python 2.7 it seems to have been removed entirely.
130
# Try running the C preprocessor:
131
try:
132
cc = subprocess.Popen(["cc", "--language=c", "-E",
133
"/dev/stdin"],
134
stdin=subprocess.PIPE,
135
stdout=subprocess.PIPE)
136
stdout = cc.communicate(
137
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
138
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
139
except (OSError, ValueError, IndexError):
140
# No value found
141
SO_BINDTODEVICE = None
142
143
if sys.version_info < (3, 2):
144
configparser.Configparser = configparser.SafeConfigParser
145
146
version = "1.8.15"
86
SO_BINDTODEVICE = None
87
88
version = "1.5.0"
147
89
stored_state_file = "clients.pickle"
148
90
149
log = logging.getLogger(os.path.basename(sys.argv[0]))
150
logging.captureWarnings(True) # Show warnings via the logging system
151
syslogger = None
91
logger = logging.getLogger()
92
syslogger = (logging.handlers.SysLogHandler
93
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
94
address = str("/dev/log")))
152
95
153
96
try:
154
if_nametoindex = ctypes.cdll.LoadLibrary(
155
ctypes.util.find_library("c")).if_nametoindex
97
if_nametoindex = (ctypes.cdll.LoadLibrary
98
(ctypes.util.find_library("c"))
99
.if_nametoindex)
156
100
except (OSError, AttributeError):
157
158
101
def if_nametoindex(interface):
159
102
"Get an interface index the hard way, i.e. using fcntl()"
160
103
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
161
104
with contextlib.closing(socket.socket()) as s:
162
105
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
163
struct.pack(b"16s16x", interface))
164
interface_index = struct.unpack("I", ifreq[16:20])[0]
106
struct.pack(str("16s16x"),
107
interface))
108
interface_index = struct.unpack(str("I"),
109
ifreq[16:20])[0]
165
110
return interface_index
166
111
167
112
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
113
def initlogger(debug, level=logging.WARNING):
185
114
"""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"))
115
191
116
syslogger.setFormatter(logging.Formatter
192
("Mandos [%(process)d]: %(levelname)s:"
193
" %(message)s"))
194
log.addHandler(syslogger)
195
117
('Mandos [%(process)d]: %(levelname)s:'
118
' %(message)s'))
119
logger.addHandler(syslogger)
120
196
121
if debug:
197
122
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)
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
124
' [%(process)d]:'
125
' %(levelname)s:'
126
' %(message)s'))
127
logger.addHandler(console)
128
logger.setLevel(level)
204
129
205
130
206
131
class PGPError(Exception):
208
133
pass
209
134
210
135
211
class PGPEngine:
136
class PGPEngine(object):
212
137
"""A simple class for OpenPGP symmetric encryption & decryption"""
213
214
138
def __init__(self):
139
self.gnupg = GnuPGInterface.GnuPG()
215
140
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
141
self.gnupg = GnuPGInterface.GnuPG()
142
self.gnupg.options.meta_interactive = False
143
self.gnupg.options.homedir = self.tempdir
144
self.gnupg.options.extra_args.extend(['--force-mdc',
145
'--quiet',
146
'--no-use-agent'])
147
235
148
def __enter__(self):
236
149
return self
237
238
def __exit__(self, exc_type, exc_value, traceback):
150
151
def __exit__ (self, exc_type, exc_value, traceback):
239
152
self._cleanup()
240
153
return False
241
154
242
155
def __del__(self):
243
156
self._cleanup()
244
157
245
158
def _cleanup(self):
246
159
if self.tempdir is not None:
247
160
# Delete contents of tempdir
248
161
for root, dirs, files in os.walk(self.tempdir,
249
topdown=False):
162
topdown = False):
250
163
for filename in files:
251
164
os.remove(os.path.join(root, filename))
252
165
for dirname in dirs:
254
167
# Remove tempdir
255
168
os.rmdir(self.tempdir)
256
169
self.tempdir = None
257
170
258
171
def password_encode(self, password):
259
172
# Passphrase can not be empty and can not contain newlines or
260
173
# 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
174
return b"mandos" + binascii.hexlify(password)
175
269
176
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)
177
self.gnupg.passphrase = self.password_encode(password)
178
with open(os.devnull) as devnull:
179
try:
180
proc = self.gnupg.run(['--symmetric'],
181
create_fhs=['stdin', 'stdout'],
182
attach_fhs={'stderr': devnull})
183
with contextlib.closing(proc.handles['stdin']) as f:
184
f.write(data)
185
with contextlib.closing(proc.handles['stdout']) as f:
186
ciphertext = f.read()
187
proc.wait()
188
except IOError as e:
189
raise PGPError(e)
190
self.gnupg.passphrase = None
285
191
return ciphertext
286
192
287
193
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)
194
self.gnupg.passphrase = self.password_encode(password)
195
with open(os.devnull) as devnull:
196
try:
197
proc = self.gnupg.run(['--decrypt'],
198
create_fhs=['stdin', 'stdout'],
199
attach_fhs={'stderr': devnull})
200
with contextlib.closing(proc.handles['stdin'] ) as f:
201
f.write(data)
202
with contextlib.closing(proc.handles['stdout']) as f:
203
decrypted_plaintext = f.read()
204
proc.wait()
205
except IOError as e:
206
raise PGPError(e)
207
self.gnupg.passphrase = None
303
208
return decrypted_plaintext
304
209
305
210
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
331
211
332
212
class AvahiError(Exception):
333
213
def __init__(self, value, *args, **kwargs):
334
214
self.value = value
335
return super(AvahiError, self).__init__(value, *args,
336
**kwargs)
337
215
super(AvahiError, self).__init__(value, *args, **kwargs)
216
def __unicode__(self):
217
return unicode(repr(self.value))
338
218
339
219
class AvahiServiceError(AvahiError):
340
220
pass
341
221
342
343
222
class AvahiGroupError(AvahiError):
344
223
pass
345
224
346
225
347
class AvahiService:
226
class AvahiService(object):
348
227
"""An Avahi (Zeroconf) service.
349
228
350
229
Attributes:
351
230
interface: integer; avahi.IF_UNSPEC or an interface index.
352
231
Used to optionally bind to the specified interface.
353
name: string; Example: "Mandos"
354
type: string; Example: "_mandos._tcp".
355
See <https://www.iana.org/assignments/service-names-port-numbers>
232
name: string; Example: 'Mandos'
233
type: string; Example: '_mandos._tcp'.
234
See <http://www.dns-sd.org/ServiceTypes.html>
356
235
port: integer; what port to announce
357
236
TXT: list of strings; TXT record for the service
358
237
domain: string; Domain to publish on, default to .local if empty.
364
243
server: D-Bus Server
365
244
bus: dbus.SystemBus()
366
245
"""
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):
246
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
247
servicetype = None, port = None, TXT = None,
248
domain = "", host = "", max_renames = 32768,
249
protocol = avahi.PROTO_UNSPEC, bus = None):
379
250
self.interface = interface
380
251
self.name = name
381
252
self.type = servicetype
390
261
self.server = None
391
262
self.bus = bus
392
263
self.entry_group_state_changed_match = None
393
394
def rename(self, remove=True):
264
def rename(self):
395
265
"""Derived from the Avahi example code"""
396
266
if self.rename_count >= self.max_renames:
397
log.critical("No suitable Zeroconf service name found"
398
" after %i retries, exiting.",
399
self.rename_count)
267
logger.critical("No suitable Zeroconf service name found"
268
" after %i retries, exiting.",
269
self.rename_count)
400
270
raise AvahiServiceError("Too many renames")
401
self.name = str(
402
self.server.GetAlternativeServiceName(self.name))
271
self.name = unicode(self.server
272
.GetAlternativeServiceName(self.name))
273
logger.info("Changing Zeroconf service name to %r ...",
274
self.name)
275
self.remove()
276
try:
277
self.add()
278
except dbus.exceptions.DBusException as error:
279
logger.critical("DBusException: %s", error)
280
self.cleanup()
281
os._exit(1)
403
282
self.rename_count += 1
404
log.info("Changing Zeroconf service name to %r ...",
405
self.name)
406
if remove:
407
self.remove()
408
try:
409
self.add()
410
except dbus.exceptions.DBusException as error:
411
if (error.get_dbus_name()
412
== "org.freedesktop.Avahi.CollisionError"):
413
log.info("Local Zeroconf service name collision.")
414
return self.rename(remove=False)
415
else:
416
log.critical("D-Bus Exception", exc_info=error)
417
self.cleanup()
418
os._exit(1)
419
420
283
def remove(self):
421
284
"""Derived from the Avahi example code"""
422
285
if self.entry_group_state_changed_match is not None:
424
287
self.entry_group_state_changed_match = None
425
288
if self.group is not None:
426
289
self.group.Reset()
427
428
290
def add(self):
429
291
"""Derived from the Avahi example code"""
430
292
self.remove()
435
297
avahi.DBUS_INTERFACE_ENTRY_GROUP)
436
298
self.entry_group_state_changed_match = (
437
299
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)
300
'StateChanged', self.entry_group_state_changed))
301
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
302
self.name, self.type)
441
303
self.group.AddService(
442
304
self.interface,
443
305
self.protocol,
447
309
dbus.UInt16(self.port),
448
310
avahi.string_array_to_txt_array(self.TXT))
449
311
self.group.Commit()
450
451
312
def entry_group_state_changed(self, state, error):
452
313
"""Derived from the Avahi example code"""
453
log.debug("Avahi entry group state change: %i", state)
454
314
logger.debug("Avahi entry group state change: %i", state)
315
455
316
if state == avahi.ENTRY_GROUP_ESTABLISHED:
456
log.debug("Zeroconf service established.")
317
logger.debug("Zeroconf service established.")
457
318
elif state == avahi.ENTRY_GROUP_COLLISION:
458
log.info("Zeroconf service name collision.")
319
logger.info("Zeroconf service name collision.")
459
320
self.rename()
460
321
elif state == avahi.ENTRY_GROUP_FAILURE:
461
log.critical("Avahi: Error in group state changed %s",
462
str(error))
463
raise AvahiGroupError("State changed: {!s}".format(error))
464
322
logger.critical("Avahi: Error in group state changed %s",
323
unicode(error))
324
raise AvahiGroupError("State changed: %s"
325
% unicode(error))
465
326
def cleanup(self):
466
327
"""Derived from the Avahi example code"""
467
328
if self.group is not None:
472
333
pass
473
334
self.group = None
474
335
self.remove()
475
476
336
def server_state_changed(self, state, error=None):
477
337
"""Derived from the Avahi example code"""
478
log.debug("Avahi server state change: %i", state)
479
bad_states = {
480
avahi.SERVER_INVALID: "Zeroconf server invalid",
481
avahi.SERVER_REGISTERING: None,
482
avahi.SERVER_COLLISION: "Zeroconf server name collision",
483
avahi.SERVER_FAILURE: "Zeroconf server failure",
484
}
338
logger.debug("Avahi server state change: %i", state)
339
bad_states = { avahi.SERVER_INVALID:
340
"Zeroconf server invalid",
341
avahi.SERVER_REGISTERING: None,
342
avahi.SERVER_COLLISION:
343
"Zeroconf server name collision",
344
avahi.SERVER_FAILURE:
345
"Zeroconf server failure" }
485
346
if state in bad_states:
486
347
if bad_states[state] is not None:
487
348
if error is None:
488
log.error(bad_states[state])
349
logger.error(bad_states[state])
489
350
else:
490
log.error(bad_states[state] + ": %r", error)
351
logger.error(bad_states[state] + ": %r", error)
491
352
self.cleanup()
492
353
elif state == avahi.SERVER_RUNNING:
493
try:
494
self.add()
495
except dbus.exceptions.DBusException as error:
496
if (error.get_dbus_name()
497
== "org.freedesktop.Avahi.CollisionError"):
498
log.info("Local Zeroconf service name collision.")
499
return self.rename(remove=False)
500
else:
501
log.critical("D-Bus Exception", exc_info=error)
502
self.cleanup()
503
os._exit(1)
354
self.add()
504
355
else:
505
356
if error is None:
506
log.debug("Unknown state: %r", state)
357
logger.debug("Unknown state: %r", state)
507
358
else:
508
log.debug("Unknown state: %r: %r", state, error)
509
359
logger.debug("Unknown state: %r: %r", state, error)
510
360
def activate(self):
511
361
"""Derived from the Avahi example code"""
512
362
if self.server is None:
516
366
follow_name_owner_changes=True),
517
367
avahi.DBUS_INTERFACE_SERVER)
518
368
self.server.connect_to_signal("StateChanged",
519
self.server_state_changed)
369
self.server_state_changed)
520
370
self.server_state_changed(self.server.GetState())
521
371
522
523
372
class AvahiServiceToSyslog(AvahiService):
524
def rename(self, *args, **kwargs):
373
def rename(self):
525
374
"""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)))
375
ret = AvahiService.rename(self)
376
syslogger.setFormatter(logging.Formatter
377
('Mandos (%s) [%%(process)d]:'
378
' %%(levelname)s: %%(message)s'
379
% self.name))
531
380
return ret
532
381
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:
382
def timedelta_to_milliseconds(td):
383
"Convert a datetime.timedelta() to milliseconds"
384
return ((td.days * 24 * 60 * 60 * 1000)
385
+ (td.seconds * 1000)
386
+ (td.microseconds // 1000))
387
388
class Client(object):
875
389
"""A representation of a client host served by this server.
876
390
877
391
Attributes:
878
approved: bool(); None if not yet approved/disapproved
392
approved: bool(); 'None' if not yet approved/disapproved
879
393
approval_delay: datetime.timedelta(); Time to wait for approval
880
394
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
395
checker: subprocess.Popen(); a running checker process used
396
to see if the client lives.
397
'None' if no process is running.
398
checker_callback_tag: a gobject event source tag, or None
885
399
checker_command: string; External command which is run to check
886
400
if client lives. %() expansions are done at
887
401
runtime with vars(self) as dict, so that for
888
402
instance %(name)s can be used in the command.
889
checker_initiator_tag: a GLib event source tag, or None
403
checker_initiator_tag: a gobject event source tag, or None
890
404
created: datetime.datetime(); (UTC) object creation
891
405
client_structure: Object describing what attributes a client has
892
406
and is used for storing the client at exit
893
407
current_checker_command: string; current running checker_command
894
disable_initiator_tag: a GLib event source tag, or None
408
disable_initiator_tag: a gobject event source tag, or None
895
409
enabled: bool()
896
410
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
411
uniquely identify the client
900
412
host: string; available for use by the checker command
901
413
interval: datetime.timedelta(); How often to start a new checker
902
414
last_approval_request: datetime.datetime(); (UTC) or None
903
415
last_checked_ok: datetime.datetime(); (UTC) or None
904
416
last_checker_status: integer between 0 and 255 reflecting exit
905
417
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
418
checker, or None.
909
419
last_enabled: datetime.datetime(); (UTC) or None
910
420
name: string; from the config file, used in log messages and
911
421
D-Bus identifiers
912
422
secret: bytestring; sent verbatim (over TLS) to client
913
423
timeout: datetime.timedelta(); How long from last_checked_ok
914
424
until this client is disabled
915
extended_timeout: extra long timeout when secret has been sent
425
extended_timeout: extra long timeout when password has been sent
916
426
runtime_expansions: Allowed attributes for runtime expansion.
917
427
expires: datetime.datetime(); time (UTC) when a client will be
918
428
disabled, or None
919
server_settings: The server_settings dict from main()
920
429
"""
921
430
922
431
runtime_expansions = ("approval_delay", "approval_duration",
923
"created", "enabled", "expires", "key_id",
924
"fingerprint", "host", "interval",
925
"last_approval_request", "last_checked_ok",
432
"created", "enabled", "fingerprint",
433
"host", "interval", "last_checked_ok",
926
434
"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
}
435
client_defaults = { "timeout": "5m",
436
"extended_timeout": "15m",
437
"interval": "2m",
438
"checker": "fping -q -- %%(host)s",
439
"host": "",
440
"approval_delay": "0s",
441
"approval_duration": "1s",
442
"approved_by_default": "True",
443
"enabled": "True",
444
}
445
446
def timeout_milliseconds(self):
447
"Return the 'timeout' attribute in milliseconds"
448
return timedelta_to_milliseconds(self.timeout)
449
450
def extended_timeout_milliseconds(self):
451
"Return the 'extended_timeout' attribute in milliseconds"
452
return timedelta_to_milliseconds(self.extended_timeout)
453
454
def interval_milliseconds(self):
455
"Return the 'interval' attribute in milliseconds"
456
return timedelta_to_milliseconds(self.interval)
457
458
def approval_delay_milliseconds(self):
459
return timedelta_to_milliseconds(self.approval_delay)
938
460
939
461
@staticmethod
940
462
def config_parser(config):
948
470
for client_name in config.sections():
949
471
section = dict(config.items(client_name))
950
472
client = settings[client_name] = {}
951
473
952
474
client["host"] = section["host"]
953
475
# Reformat values from string types to Python types
954
476
client["approved_by_default"] = config.getboolean(
955
477
client_name, "approved_by_default")
956
478
client["enabled"] = config.getboolean(client_name,
957
479
"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(" ", ""))
480
964
481
client["fingerprint"] = (section["fingerprint"].upper()
965
482
.replace(" ", ""))
966
483
if "secret" in section:
967
client["secret"] = codecs.decode(section["secret"]
968
.encode("utf-8"),
969
"base64")
484
client["secret"] = section["secret"].decode("base64")
970
485
elif "secfile" in section:
971
486
with open(os.path.expanduser(os.path.expandvars
972
487
(section["secfile"])),
973
488
"rb") as secfile:
974
489
client["secret"] = secfile.read()
975
490
else:
976
raise TypeError("No secret or secfile for section {}"
977
.format(section))
491
raise TypeError("No secret or secfile for section %s"
492
% section)
978
493
client["timeout"] = string_to_delta(section["timeout"])
979
494
client["extended_timeout"] = string_to_delta(
980
495
section["extended_timeout"])
986
501
client["checker_command"] = section["checker"]
987
502
client["last_approval_request"] = None
988
503
client["last_checked_ok"] = None
989
client["last_checker_status"] = -2
990
504
client["last_checker_status"] = None
505
991
506
return settings
992
993
def __init__(self, settings, name=None, server_settings=None):
507
508
509
def __init__(self, settings, name = None):
510
"""Note: the 'checker' key in 'config' sets the
511
'checker_command' attribute and *not* the 'checker'
512
attribute."""
994
513
self.name = name
995
if server_settings is None:
996
server_settings = {}
997
self.server_settings = server_settings
998
514
# adding all client settings
999
for setting, value in settings.items():
515
for setting, value in settings.iteritems():
1000
516
setattr(self, setting, value)
1001
517
1002
518
if self.enabled:
1003
519
if not hasattr(self, "last_enabled"):
1004
520
self.last_enabled = datetime.datetime.utcnow()
1008
524
else:
1009
525
self.last_enabled = None
1010
526
self.expires = None
1011
1012
log.debug("Creating client %r", self.name)
1013
log.debug(" Key ID: %s", self.key_id)
1014
log.debug(" Fingerprint: %s", self.fingerprint)
527
528
logger.debug("Creating client %r", self.name)
529
# Uppercase and remove spaces from fingerprint for later
530
# comparison purposes with return value from the fingerprint()
531
# function
532
logger.debug(" Fingerprint: %s", self.fingerprint)
1015
533
self.created = settings.get("created",
1016
534
datetime.datetime.utcnow())
1017
535
1023
541
self.current_checker_command = None
1024
542
self.approved = None
1025
543
self.approvals_pending = 0
1026
self.changedstate = multiprocessing_manager.Condition(
1027
multiprocessing_manager.Lock())
1028
self.client_structure = [attr
1029
for attr in self.__dict__.keys()
544
self.changedstate = (multiprocessing_manager
545
.Condition(multiprocessing_manager
546
.Lock()))
547
self.client_structure = [attr for attr in
548
self.__dict__.iterkeys()
1030
549
if not attr.startswith("_")]
1031
550
self.client_structure.append("client_structure")
1032
1033
for name, t in inspect.getmembers(
1034
type(self), lambda obj: isinstance(obj, property)):
551
552
for name, t in inspect.getmembers(type(self),
553
lambda obj:
554
isinstance(obj,
555
property)):
1035
556
if not name.startswith("_"):
1036
557
self.client_structure.append(name)
1037
558
1038
559
# Send notice to process children that client state has changed
1039
560
def send_changedstate(self):
1040
561
with self.changedstate:
1041
562
self.changedstate.notify_all()
1042
563
1043
564
def enable(self):
1044
565
"""Start this client's checker and timeout hooks"""
1045
566
if getattr(self, "enabled", False):
1046
567
# Already enabled
1047
568
return
569
self.send_changedstate()
570
self.expires = datetime.datetime.utcnow() + self.timeout
1048
571
self.enabled = True
1049
572
self.last_enabled = datetime.datetime.utcnow()
1050
573
self.init_checker()
1051
self.send_changedstate()
1052
574
1053
575
def disable(self, quiet=True):
1054
576
"""Disable this client."""
1055
577
if not getattr(self, "enabled", False):
1056
578
return False
1057
579
if not quiet:
1058
log.info("Disabling client %s", self.name)
1059
if getattr(self, "disable_initiator_tag", None) is not None:
1060
GLib.source_remove(self.disable_initiator_tag)
580
self.send_changedstate()
581
if not quiet:
582
logger.info("Disabling client %s", self.name)
583
if getattr(self, "disable_initiator_tag", False):
584
gobject.source_remove(self.disable_initiator_tag)
1061
585
self.disable_initiator_tag = None
1062
586
self.expires = None
1063
if getattr(self, "checker_initiator_tag", None) is not None:
1064
GLib.source_remove(self.checker_initiator_tag)
587
if getattr(self, "checker_initiator_tag", False):
588
gobject.source_remove(self.checker_initiator_tag)
1065
589
self.checker_initiator_tag = None
1066
590
self.stop_checker()
1067
591
self.enabled = False
1068
if not quiet:
1069
self.send_changedstate()
1070
# Do not run this again if called by a GLib.timeout_add
592
# Do not run this again if called by a gobject.timeout_add
1071
593
return False
1072
594
1073
595
def __del__(self):
1074
596
self.disable()
1075
1076
def init_checker(self, randomize_start=False):
1077
# Schedule a new checker to be started a randomly selected
1078
# time (a fraction of 'interval') from now. This spreads out
1079
# the startup of checkers over time when the server is
1080
# started.
1081
if self.checker_initiator_tag is not None:
1082
GLib.source_remove(self.checker_initiator_tag)
1083
interval_milliseconds = int(self.interval.total_seconds()
1084
* 1000)
1085
if randomize_start:
1086
delay_milliseconds = random.randrange(
1087
interval_milliseconds + 1)
1088
else:
1089
delay_milliseconds = interval_milliseconds
1090
self.checker_initiator_tag = GLib.timeout_add(
1091
delay_milliseconds, self.start_checker, randomize_start)
1092
delay = datetime.timedelta(0, 0, 0, delay_milliseconds)
1093
# A checker might take up to an 'interval' of time, so we can
1094
# expire at the soonest one interval after a checker was
1095
# started. Since the initial checker is delayed, the expire
1096
# time might have to be extended.
1097
now = datetime.datetime.utcnow()
1098
self.expires = now + delay + self.interval
1099
# Schedule a disable() at expire time
1100
if self.disable_initiator_tag is not None:
1101
GLib.source_remove(self.disable_initiator_tag)
1102
self.disable_initiator_tag = GLib.timeout_add(
1103
int((self.expires - now).total_seconds() * 1000),
1104
self.disable)
1105
1106
def checker_callback(self, source, condition, connection,
1107
command):
597
598
def init_checker(self):
599
# Schedule a new checker to be started an 'interval' from now,
600
# and every interval from then on.
601
self.checker_initiator_tag = (gobject.timeout_add
602
(self.interval_milliseconds(),
603
self.start_checker))
604
# Schedule a disable() when 'timeout' has passed
605
self.disable_initiator_tag = (gobject.timeout_add
606
(self.timeout_milliseconds(),
607
self.disable))
608
# Also start a new checker *right now*.
609
self.start_checker()
610
611
def checker_callback(self, pid, condition, command):
1108
612
"""The checker has completed, so take appropriate actions."""
1109
# Read return code from connection (see call_pipe)
1110
returncode = connection.recv()
1111
connection.close()
1112
if self.checker is not None:
1113
self.checker.join()
1114
613
self.checker_callback_tag = None
1115
614
self.checker = None
1116
1117
if returncode >= 0:
1118
self.last_checker_status = returncode
1119
self.last_checker_signal = None
615
if os.WIFEXITED(condition):
616
self.last_checker_status = os.WEXITSTATUS(condition)
1120
617
if self.last_checker_status == 0:
1121
log.info("Checker for %(name)s succeeded", vars(self))
618
logger.info("Checker for %(name)s succeeded",
619
vars(self))
1122
620
self.checked_ok()
1123
621
else:
1124
log.info("Checker for %(name)s failed", vars(self))
622
logger.info("Checker for %(name)s failed",
623
vars(self))
1125
624
else:
1126
625
self.last_checker_status = -1
1127
self.last_checker_signal = -returncode
1128
log.warning("Checker for %(name)s crashed?", vars(self))
1129
return False
1130
1131
def checked_ok(self):
1132
"""Assert that the client has been seen, alive and well."""
1133
self.last_checked_ok = datetime.datetime.utcnow()
1134
self.last_checker_status = 0
1135
self.last_checker_signal = None
1136
self.bump_timeout()
1137
1138
def bump_timeout(self, timeout=None):
1139
"""Bump up the timeout for this client."""
626
logger.warning("Checker for %(name)s crashed?",
627
vars(self))
628
629
def checked_ok(self, timeout=None):
630
"""Bump up the timeout for this client.
631
632
This should only be called when the client has been seen,
633
alive and well.
634
"""
1140
635
if timeout is None:
1141
636
timeout = self.timeout
637
self.last_checked_ok = datetime.datetime.utcnow()
1142
638
if self.disable_initiator_tag is not None:
1143
GLib.source_remove(self.disable_initiator_tag)
1144
self.disable_initiator_tag = None
639
gobject.source_remove(self.disable_initiator_tag)
1145
640
if getattr(self, "enabled", False):
1146
self.disable_initiator_tag = GLib.timeout_add(
1147
int(timeout.total_seconds() * 1000), self.disable)
641
self.disable_initiator_tag = (gobject.timeout_add
642
(timedelta_to_milliseconds
643
(timeout), self.disable))
1148
644
self.expires = datetime.datetime.utcnow() + timeout
1149
645
1150
646
def need_approval(self):
1151
647
self.last_approval_request = datetime.datetime.utcnow()
1152
1153
def start_checker(self, start_was_randomized=False):
648
649
def start_checker(self):
1154
650
"""Start a new checker subprocess if one is not running.
1155
651
1156
652
If a checker already exists, leave it running and do
1157
653
nothing."""
1158
654
# The reason for not killing a running checker is that if we
1159
# did that, and if a checker (for some reason) started running
1160
# slowly and taking more than 'interval' time, then the client
1161
# would inevitably timeout, since no checker would get a
1162
# chance to run to completion. If we instead leave running
655
# did that, then if a checker (for some reason) started
656
# running slowly and taking more than 'interval' time, the
657
# client would inevitably timeout, since no checker would get
658
# a chance to run to completion. If we instead leave running
1163
659
# checkers alone, the checker would have to take more time
1164
660
# than 'timeout' for the client to be disabled, which is as it
1165
661
# should be.
1166
1167
if self.checker is not None and not self.checker.is_alive():
1168
log.warning("Checker was not alive; joining")
1169
self.checker.join()
1170
self.checker = None
662
663
# If a checker exists, make sure it is not a zombie
664
try:
665
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
666
except (AttributeError, OSError) as error:
667
if (isinstance(error, OSError)
668
and error.errno != errno.ECHILD):
669
raise error
670
else:
671
if pid:
672
logger.warning("Checker was a zombie")
673
gobject.source_remove(self.checker_callback_tag)
674
self.checker_callback(pid, status,
675
self.current_checker_command)
1171
676
# Start a new checker if needed
1172
677
if self.checker is None:
1173
# Escape attributes for the shell
1174
escaped_attrs = {
1175
attr: shlex.quote(str(getattr(self, attr)))
1176
for attr in self.runtime_expansions}
1177
678
try:
1178
command = self.checker_command % escaped_attrs
1179
except TypeError as error:
1180
log.error('Could not format string "%s"',
1181
self.checker_command, exc_info=error)
1182
return True # Try again later
679
# In case checker_command has exactly one % operator
680
command = self.checker_command % self.host
681
except TypeError:
682
# Escape attributes for the shell
683
escaped_attrs = dict(
684
(attr,
685
re.escape(unicode(str(getattr(self, attr, "")),
686
errors=
687
'replace')))
688
for attr in
689
self.runtime_expansions)
690
691
try:
692
command = self.checker_command % escaped_attrs
693
except TypeError as error:
694
logger.error('Could not format string "%s":'
695
' %s', self.checker_command, error)
696
return True # Try again later
1183
697
self.current_checker_command = command
1184
log.info("Starting checker %r for %s", command, self.name)
1185
# We don't need to redirect stdout and stderr, since
1186
# in normal mode, that is already done by daemon(),
1187
# and in debug mode we don't want to. (Stdin is
1188
# always replaced by /dev/null.)
1189
# The exception is when not debugging but nevertheless
1190
# running in the foreground; use the previously
1191
# created wnull.
1192
popen_args = {"close_fds": True,
1193
"shell": True,
1194
"cwd": "/"}
1195
if (not self.server_settings["debug"]
1196
and self.server_settings["foreground"]):
1197
popen_args.update({"stdout": wnull,
1198
"stderr": wnull})
1199
pipe = multiprocessing.Pipe(duplex=False)
1200
self.checker = multiprocessing.Process(
1201
target=call_pipe,
1202
args=(pipe[1], subprocess.call, command),
1203
kwargs=popen_args)
1204
self.checker.start()
1205
self.checker_callback_tag = GLib.io_add_watch(
1206
GLib.IOChannel.unix_new(pipe[0].fileno()),
1207
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1208
self.checker_callback, pipe[0], command)
1209
if start_was_randomized:
1210
# We were started after a random delay; Schedule a new
1211
# checker to be started an 'interval' from now, and every
1212
# interval from then on.
1213
now = datetime.datetime.utcnow()
1214
self.checker_initiator_tag = GLib.timeout_add(
1215
int(self.interval.total_seconds() * 1000),
1216
self.start_checker)
1217
self.expires = max(self.expires, now + self.interval)
1218
# Don't start a new checker again after same random delay
1219
return False
1220
# Re-run this periodically if run by GLib.timeout_add
698
try:
699
logger.info("Starting checker %r for %s",
700
command, self.name)
701
# We don't need to redirect stdout and stderr, since
702
# in normal mode, that is already done by daemon(),
703
# and in debug mode we don't want to. (Stdin is
704
# always replaced by /dev/null.)
705
self.checker = subprocess.Popen(command,
706
close_fds=True,
707
shell=True, cwd="/")
708
self.checker_callback_tag = (gobject.child_watch_add
709
(self.checker.pid,
710
self.checker_callback,
711
data=command))
712
# The checker may have completed before the gobject
713
# watch was added. Check for this.
714
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
715
if pid:
716
gobject.source_remove(self.checker_callback_tag)
717
self.checker_callback(pid, status, command)
718
except OSError as error:
719
logger.error("Failed to start subprocess: %s",
720
error)
721
# Re-run this periodically if run by gobject.timeout_add
1221
722
return True
1222
723
1223
724
def stop_checker(self):
1224
725
"""Force the checker process, if any, to stop."""
1225
726
if self.checker_callback_tag:
1226
GLib.source_remove(self.checker_callback_tag)
727
gobject.source_remove(self.checker_callback_tag)
1227
728
self.checker_callback_tag = None
1228
729
if getattr(self, "checker", None) is None:
1229
730
return
1230
log.debug("Stopping checker for %(name)s", vars(self))
1231
self.checker.terminate()
731
logger.debug("Stopping checker for %(name)s", vars(self))
732
try:
733
os.kill(self.checker.pid, signal.SIGTERM)
734
#time.sleep(0.5)
735
#if self.checker.poll() is None:
736
# os.kill(self.checker.pid, signal.SIGKILL)
737
except OSError as error:
738
if error.errno != errno.ESRCH: # No such process
739
raise
1232
740
self.checker = None
1233
741
1234
742
1235
def dbus_service_property(dbus_interface,
1236
signature="v",
1237
access="readwrite",
1238
byte_arrays=False):
743
def dbus_service_property(dbus_interface, signature="v",
744
access="readwrite", byte_arrays=False):
1239
745
"""Decorators for marking methods of a DBusObjectWithProperties to
1240
746
become properties on the D-Bus.
1241
747
1242
748
The decorated method will be called with no arguments by "Get"
1243
749
and with one argument by "Set".
1244
750
1245
751
The parameters, where they are supported, are the same as
1246
752
dbus.service.method, except there is only "signature", since the
1247
753
type from Get() and the type sent to Set() is the same.
1250
756
# "Set" method, so we fail early here:
1251
757
if byte_arrays and signature != "ay":
1252
758
raise ValueError("Byte arrays not supported for non-'ay'"
1253
" signature {!r}".format(signature))
1254
759
" signature %r" % signature)
1255
760
def decorator(func):
1256
761
func._dbus_is_property = True
1257
762
func._dbus_interface = dbus_interface
1260
765
func._dbus_name = func.__name__
1261
766
if func._dbus_name.endswith("_dbus_property"):
1262
767
func._dbus_name = func._dbus_name[:-14]
1263
func._dbus_get_args_options = {"byte_arrays": byte_arrays}
1264
return func
1265
1266
return decorator
1267
1268
1269
def dbus_interface_annotations(dbus_interface):
1270
"""Decorator for marking functions returning interface annotations
1271
1272
Usage:
1273
1274
@dbus_interface_annotations("org.example.Interface")
1275
def _foo(self): # Function name does not matter
1276
return {"org.freedesktop.DBus.Deprecated": "true",
1277
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1278
"false"}
1279
"""
1280
1281
def decorator(func):
1282
func._dbus_is_interface = True
1283
func._dbus_interface = dbus_interface
1284
func._dbus_name = dbus_interface
1285
return func
1286
1287
return decorator
1288
1289
1290
def dbus_annotations(annotations):
1291
"""Decorator to annotate D-Bus methods, signals or properties
1292
Usage:
1293
1294
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1295
"org.freedesktop.DBus.Property."
1296
"EmitsChangedSignal": "false"})
1297
@dbus_service_property("org.example.Interface", signature="b",
1298
access="r")
1299
def Property_dbus_property(self):
1300
return dbus.Boolean(False)
1301
1302
See also the DBusObjectWithAnnotations class.
1303
"""
1304
1305
def decorator(func):
1306
func._dbus_annotations = annotations
1307
return func
1308
768
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
769
return func
1309
770
return decorator
1310
771
1311
772
1312
773
class DBusPropertyException(dbus.exceptions.DBusException):
1313
774
"""A base class for D-Bus property-related exceptions
1314
775
"""
1315
pass
776
def __unicode__(self):
777
return unicode(str(self))
1316
778
1317
779
1318
780
class DBusPropertyAccessException(DBusPropertyException):
1327
789
pass
1328
790
1329
791
1330
class DBusObjectWithAnnotations(dbus.service.Object):
1331
"""A D-Bus object with annotations.
1332
1333
Classes inheriting from this can use the dbus_annotations
1334
decorator to add annotations to methods or signals.
1335
"""
1336
1337
@staticmethod
1338
def _is_dbus_thing(thing):
1339
"""Returns a function testing if an attribute is a D-Bus thing
1340
1341
If called like _is_dbus_thing("method") it returns a function
1342
suitable for use as predicate to inspect.getmembers().
1343
"""
1344
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1345
False)
1346
1347
def _get_all_dbus_things(self, thing):
1348
"""Returns a generator of (name, attribute) pairs
1349
"""
1350
return ((getattr(athing.__get__(self), "_dbus_name", name),
1351
athing.__get__(self))
1352
for cls in self.__class__.__mro__
1353
for name, athing in
1354
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1355
1356
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1357
out_signature="s",
1358
path_keyword="object_path",
1359
connection_keyword="connection")
1360
def Introspect(self, object_path, connection):
1361
"""Overloading of standard D-Bus method.
1362
1363
Inserts annotation tags on methods and signals.
1364
"""
1365
xmlstring = dbus.service.Object.Introspect(self, object_path,
1366
connection)
1367
try:
1368
document = xml.dom.minidom.parseString(xmlstring)
1369
1370
for if_tag in document.getElementsByTagName("interface"):
1371
# Add annotation tags
1372
for typ in ("method", "signal"):
1373
for tag in if_tag.getElementsByTagName(typ):
1374
annots = dict()
1375
for name, prop in (self.
1376
_get_all_dbus_things(typ)):
1377
if (name == tag.getAttribute("name")
1378
and prop._dbus_interface
1379
== if_tag.getAttribute("name")):
1380
annots.update(getattr(
1381
prop, "_dbus_annotations", {}))
1382
for name, value in annots.items():
1383
ann_tag = document.createElement(
1384
"annotation")
1385
ann_tag.setAttribute("name", name)
1386
ann_tag.setAttribute("value", value)
1387
tag.appendChild(ann_tag)
1388
# Add interface annotation tags
1389
for annotation, value in dict(
1390
itertools.chain.from_iterable(
1391
annotations().items()
1392
for name, annotations
1393
in self._get_all_dbus_things("interface")
1394
if name == if_tag.getAttribute("name")
1395
)).items():
1396
ann_tag = document.createElement("annotation")
1397
ann_tag.setAttribute("name", annotation)
1398
ann_tag.setAttribute("value", value)
1399
if_tag.appendChild(ann_tag)
1400
# Fix argument name for the Introspect method itself
1401
if (if_tag.getAttribute("name")
1402
== dbus.INTROSPECTABLE_IFACE):
1403
for cn in if_tag.getElementsByTagName("method"):
1404
if cn.getAttribute("name") == "Introspect":
1405
for arg in cn.getElementsByTagName("arg"):
1406
if (arg.getAttribute("direction")
1407
== "out"):
1408
arg.setAttribute("name",
1409
"xml_data")
1410
xmlstring = document.toxml("utf-8")
1411
document.unlink()
1412
except (AttributeError, xml.dom.DOMException,
1413
xml.parsers.expat.ExpatError) as error:
1414
log.error("Failed to override Introspection method",
1415
exc_info=error)
1416
return xmlstring
1417
1418
1419
class DBusObjectWithProperties(DBusObjectWithAnnotations):
792
class DBusObjectWithProperties(dbus.service.Object):
1420
793
"""A D-Bus object with properties.
1421
794
1422
795
Classes inheriting from this can use the dbus_service_property
1423
796
decorator to expose methods as D-Bus properties. It exposes the
1424
797
standard Get(), Set(), and GetAll() methods on the D-Bus.
1425
798
"""
1426
799
800
@staticmethod
801
def _is_dbus_property(obj):
802
return getattr(obj, "_dbus_is_property", False)
803
804
def _get_all_dbus_properties(self):
805
"""Returns a generator of (name, attribute) pairs
806
"""
807
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
808
for cls in self.__class__.__mro__
809
for name, prop in
810
inspect.getmembers(cls, self._is_dbus_property))
811
1427
812
def _get_dbus_property(self, interface_name, property_name):
1428
813
"""Returns a bound method if one exists which is a D-Bus
1429
814
property with the specified name and interface.
1430
815
"""
1431
for cls in self.__class__.__mro__:
1432
for name, value in inspect.getmembers(
1433
cls, self._is_dbus_thing("property")):
816
for cls in self.__class__.__mro__:
817
for name, value in (inspect.getmembers
818
(cls, self._is_dbus_property)):
1434
819
if (value._dbus_name == property_name
1435
820
and value._dbus_interface == interface_name):
1436
821
return value.__get__(self)
1437
822
1438
823
# No such property
1439
raise DBusPropertyNotFound("{}:{}.{}".format(
1440
self.dbus_object_path, interface_name, property_name))
1441
1442
@classmethod
1443
def _get_all_interface_names(cls):
1444
"""Get a sequence of all interfaces supported by an object"""
1445
return (name for name in set(getattr(getattr(x, attr),
1446
"_dbus_interface", None)
1447
for x in (inspect.getmro(cls))
1448
for attr in dir(x))
1449
if name is not None)
1450
1451
@dbus.service.method(dbus.PROPERTIES_IFACE,
1452
in_signature="ss",
824
raise DBusPropertyNotFound(self.dbus_object_path + ":"
825
+ interface_name + "."
826
+ property_name)
827
828
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1453
829
out_signature="v")
1454
830
def Get(self, interface_name, property_name):
1455
831
"""Standard D-Bus property Get() method, see D-Bus standard.
1461
837
if not hasattr(value, "variant_level"):
1462
838
return value
1463
839
return type(value)(value, variant_level=value.variant_level+1)
1464
840
1465
841
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1466
842
def Set(self, interface_name, property_name, value):
1467
843
"""Standard D-Bus property Set() method, see D-Bus standard.
1473
849
# The byte_arrays option is not supported yet on
1474
850
# signatures other than "ay".
1475
851
if prop._dbus_signature != "ay":
1476
raise ValueError("Byte arrays not supported for non-"
1477
"'ay' signature {!r}"
1478
.format(prop._dbus_signature))
1479
value = dbus.ByteArray(bytes(value))
852
raise ValueError
853
value = dbus.ByteArray(b''.join(chr(byte)
854
for byte in value))
1480
855
prop(value)
1481
1482
@dbus.service.method(dbus.PROPERTIES_IFACE,
1483
in_signature="s",
856
857
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1484
858
out_signature="a{sv}")
1485
859
def GetAll(self, interface_name):
1486
860
"""Standard D-Bus property GetAll() method, see D-Bus
1487
861
standard.
1488
862
1489
863
Note: Will not include properties with access="write".
1490
864
"""
1491
865
properties = {}
1492
for name, prop in self._get_all_dbus_things("property"):
866
for name, prop in self._get_all_dbus_properties():
1493
867
if (interface_name
1494
868
and interface_name != prop._dbus_interface):
1495
869
# Interface non-empty but did not match
1501
875
if not hasattr(value, "variant_level"):
1502
876
properties[name] = value
1503
877
continue
1504
properties[name] = type(value)(
1505
value, variant_level=value.variant_level + 1)
878
properties[name] = type(value)(value, variant_level=
879
value.variant_level+1)
1506
880
return dbus.Dictionary(properties, signature="sv")
1507
1508
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1509
def PropertiesChanged(self, interface_name, changed_properties,
1510
invalidated_properties):
1511
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1512
standard.
1513
"""
1514
pass
1515
881
1516
882
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1517
883
out_signature="s",
1518
path_keyword="object_path",
1519
connection_keyword="connection")
884
path_keyword='object_path',
885
connection_keyword='connection')
1520
886
def Introspect(self, object_path, connection):
1521
"""Overloading of standard D-Bus method.
1522
1523
Inserts property tags and interface annotation tags.
887
"""Standard D-Bus method, overloaded to insert property tags.
1524
888
"""
1525
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1526
object_path,
1527
connection)
889
xmlstring = dbus.service.Object.Introspect(self, object_path,
890
connection)
1528
891
try:
1529
892
document = xml.dom.minidom.parseString(xmlstring)
1530
1531
893
def make_tag(document, name, prop):
1532
894
e = document.createElement("property")
1533
895
e.setAttribute("name", name)
1534
896
e.setAttribute("type", prop._dbus_signature)
1535
897
e.setAttribute("access", prop._dbus_access)
1536
898
return e
1537
1538
899
for if_tag in document.getElementsByTagName("interface"):
1539
# Add property tags
1540
900
for tag in (make_tag(document, name, prop)
1541
901
for name, prop
1542
in self._get_all_dbus_things("property")
902
in self._get_all_dbus_properties()
1543
903
if prop._dbus_interface
1544
904
== if_tag.getAttribute("name")):
1545
905
if_tag.appendChild(tag)
1546
# Add annotation tags for properties
1547
for tag in if_tag.getElementsByTagName("property"):
1548
annots = dict()
1549
for name, prop in self._get_all_dbus_things(
1550
"property"):
1551
if (name == tag.getAttribute("name")
1552
and prop._dbus_interface
1553
== if_tag.getAttribute("name")):
1554
annots.update(getattr(
1555
prop, "_dbus_annotations", {}))
1556
for name, value in annots.items():
1557
ann_tag = document.createElement(
1558
"annotation")
1559
ann_tag.setAttribute("name", name)
1560
ann_tag.setAttribute("value", value)
1561
tag.appendChild(ann_tag)
1562
906
# Add the names to the return values for the
1563
907
# "org.freedesktop.DBus.Properties" methods
1564
908
if (if_tag.getAttribute("name")
1578
922
document.unlink()
1579
923
except (AttributeError, xml.dom.DOMException,
1580
924
xml.parsers.expat.ExpatError) as error:
1581
log.error("Failed to override Introspection method",
1582
exc_info=error)
1583
return xmlstring
1584
1585
1586
try:
1587
dbus.OBJECT_MANAGER_IFACE
1588
except AttributeError:
1589
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1590
1591
1592
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1593
"""A D-Bus object with an ObjectManager.
1594
1595
Classes inheriting from this exposes the standard
1596
GetManagedObjects call and the InterfacesAdded and
1597
InterfacesRemoved signals on the standard
1598
"org.freedesktop.DBus.ObjectManager" interface.
1599
1600
Note: No signals are sent automatically; they must be sent
1601
manually.
1602
"""
1603
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1604
out_signature="a{oa{sa{sv}}}")
1605
def GetManagedObjects(self):
1606
"""This function must be overridden"""
1607
raise NotImplementedError()
1608
1609
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1610
signature="oa{sa{sv}}")
1611
def InterfacesAdded(self, object_path, interfaces_and_properties):
1612
pass
1613
1614
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1615
def InterfacesRemoved(self, object_path, interfaces):
1616
pass
1617
1618
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1619
out_signature="s",
1620
path_keyword="object_path",
1621
connection_keyword="connection")
1622
def Introspect(self, object_path, connection):
1623
"""Overloading of standard D-Bus method.
1624
1625
Override return argument name of GetManagedObjects to be
1626
"objpath_interfaces_and_properties"
1627
"""
1628
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1629
object_path,
1630
connection)
1631
try:
1632
document = xml.dom.minidom.parseString(xmlstring)
1633
1634
for if_tag in document.getElementsByTagName("interface"):
1635
# Fix argument name for the GetManagedObjects method
1636
if (if_tag.getAttribute("name")
1637
== dbus.OBJECT_MANAGER_IFACE):
1638
for cn in if_tag.getElementsByTagName("method"):
1639
if (cn.getAttribute("name")
1640
== "GetManagedObjects"):
1641
for arg in cn.getElementsByTagName("arg"):
1642
if (arg.getAttribute("direction")
1643
== "out"):
1644
arg.setAttribute(
1645
"name",
1646
"objpath_interfaces"
1647
"_and_properties")
1648
xmlstring = document.toxml("utf-8")
1649
document.unlink()
1650
except (AttributeError, xml.dom.DOMException,
1651
xml.parsers.expat.ExpatError) as error:
1652
log.error("Failed to override Introspection method",
1653
exc_info=error)
1654
return xmlstring
1655
1656
1657
def datetime_to_dbus(dt, variant_level=0):
925
logger.error("Failed to override Introspection method",
926
error)
927
return xmlstring
928
929
930
def datetime_to_dbus (dt, variant_level=0):
1658
931
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1659
932
if dt is None:
1660
return dbus.String("", variant_level=variant_level)
1661
return dbus.String(dt.isoformat(), variant_level=variant_level)
1662
1663
1664
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1665
"""A class decorator; applied to a subclass of
1666
dbus.service.Object, it will add alternate D-Bus attributes with
1667
interface names according to the "alt_interface_names" mapping.
1668
Usage:
1669
1670
@alternate_dbus_interfaces({"org.example.Interface":
1671
"net.example.AlternateInterface"})
1672
class SampleDBusObject(dbus.service.Object):
1673
@dbus.service.method("org.example.Interface")
1674
def SampleDBusMethod():
1675
pass
1676
1677
The above "SampleDBusMethod" on "SampleDBusObject" will be
1678
reachable via two interfaces: "org.example.Interface" and
1679
"net.example.AlternateInterface", the latter of which will have
1680
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1681
"true", unless "deprecate" is passed with a False value.
1682
1683
This works for methods and signals, and also for D-Bus properties
1684
(from DBusObjectWithProperties) and interfaces (from the
1685
dbus_interface_annotations decorator).
933
return dbus.String("", variant_level = variant_level)
934
return dbus.String(dt.isoformat(),
935
variant_level=variant_level)
936
937
938
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
939
.__metaclass__):
940
"""Applied to an empty subclass of a D-Bus object, this metaclass
941
will add additional D-Bus attributes matching a certain pattern.
1686
942
"""
1687
1688
def wrapper(cls):
1689
for orig_interface_name, alt_interface_name in (
1690
alt_interface_names.items()):
1691
attr = {}
1692
interface_names = set()
1693
# Go though all attributes of the class
1694
for attrname, attribute in inspect.getmembers(cls):
943
def __new__(mcs, name, bases, attr):
944
# Go through all the base classes which could have D-Bus
945
# methods, signals, or properties in them
946
for base in (b for b in bases
947
if issubclass(b, dbus.service.Object)):
948
# Go though all attributes of the base class
949
for attrname, attribute in inspect.getmembers(base):
1695
950
# Ignore non-D-Bus attributes, and D-Bus attributes
1696
951
# with the wrong interface name
1697
952
if (not hasattr(attribute, "_dbus_interface")
1698
or not attribute._dbus_interface.startswith(
1699
orig_interface_name)):
953
or not attribute._dbus_interface
954
.startswith("se.recompile.Mandos")):
1700
955
continue
1701
956
# Create an alternate D-Bus interface name based on
1702
957
# the current name
1703
alt_interface = attribute._dbus_interface.replace(
1704
orig_interface_name, alt_interface_name)
1705
interface_names.add(alt_interface)
958
alt_interface = (attribute._dbus_interface
959
.replace("se.recompile.Mandos",
960
"se.bsnet.fukt.Mandos"))
1706
961
# Is this a D-Bus signal?
1707
962
if getattr(attribute, "_dbus_is_signal", False):
1708
# Extract the original non-method undecorated
1709
# function by black magic
1710
if sys.version_info.major == 2:
1711
nonmethod_func = (dict(
963
# Extract the original non-method function by
964
# black magic
965
nonmethod_func = (dict(
1712
966
zip(attribute.func_code.co_freevars,
1713
attribute.__closure__))
1714
["func"].cell_contents)
1715
else:
1716
nonmethod_func = (dict(
1717
zip(attribute.__code__.co_freevars,
1718
attribute.__closure__))
1719
["func"].cell_contents)
967
attribute.__closure__))["func"]
968
.cell_contents)
1720
969
# Create a new, but exactly alike, function
1721
970
# object, and decorate it to be a new D-Bus signal
1722
971
# with the alternate D-Bus interface name
1723
new_function = copy_function(nonmethod_func)
1724
new_function = (dbus.service.signal(
1725
alt_interface,
1726
attribute._dbus_signature)(new_function))
1727
# Copy annotations, if any
1728
try:
1729
new_function._dbus_annotations = dict(
1730
attribute._dbus_annotations)
1731
except AttributeError:
1732
pass
1733
972
new_function = (dbus.service.signal
973
(alt_interface,
974
attribute._dbus_signature)
975
(types.FunctionType(
976
nonmethod_func.func_code,
977
nonmethod_func.func_globals,
978
nonmethod_func.func_name,
979
nonmethod_func.func_defaults,
980
nonmethod_func.func_closure)))
1734
981
# Define a creator of a function to call both the
1735
# original and alternate functions, so both the
1736
# original and alternate signals gets sent when
1737
# the function is called
982
# old and new functions, so both the old and new
983
# signals gets sent when the function is called
1738
984
def fixscope(func1, func2):
1739
985
"""This function is a scope container to pass
1740
986
func1 and func2 to the "call_both" function
1741
987
outside of its arguments"""
1742
1743
@functools.wraps(func2)
1744
988
def call_both(*args, **kwargs):
1745
989
"""This function will emit two D-Bus
1746
990
signals by calling func1 and func2"""
1747
991
func1(*args, **kwargs)
1748
992
func2(*args, **kwargs)
1749
# Make wrapper function look like a D-Bus
1750
# signal
1751
for name, attr in inspect.getmembers(func2):
1752
if name.startswith("_dbus_"):
1753
setattr(call_both, name, attr)
1754
1755
993
return call_both
1756
994
# Create the "call_both" function and add it to
1757
995
# the class
1758
attr[attrname] = fixscope(attribute, new_function)
996
attr[attrname] = fixscope(attribute,
997
new_function)
1759
998
# Is this a D-Bus method?
1760
999
elif getattr(attribute, "_dbus_is_method", False):
1761
1000
# Create a new, but exactly alike, function
1762
1001
# object. Decorate it to be a new D-Bus method
1763
1002
# with the alternate D-Bus interface name. Add it
1764
1003
# to the class.
1765
attr[attrname] = (
1766
dbus.service.method(
1767
alt_interface,
1768
attribute._dbus_in_signature,
1769
attribute._dbus_out_signature)
1770
(copy_function(attribute)))
1771
# Copy annotations, if any
1772
try:
1773
attr[attrname]._dbus_annotations = dict(
1774
attribute._dbus_annotations)
1775
except AttributeError:
1776
pass
1004
attr[attrname] = (dbus.service.method
1005
(alt_interface,
1006
attribute._dbus_in_signature,
1007
attribute._dbus_out_signature)
1008
(types.FunctionType
1009
(attribute.func_code,
1010
attribute.func_globals,
1011
attribute.func_name,
1012
attribute.func_defaults,
1013
attribute.func_closure)))
1777
1014
# Is this a D-Bus property?
1778
1015
elif getattr(attribute, "_dbus_is_property", False):
1779
1016
# Create a new, but exactly alike, function
1780
1017
# object, and decorate it to be a new D-Bus
1781
1018
# property with the alternate D-Bus interface
1782
1019
# name. Add it to the class.
1783
attr[attrname] = (dbus_service_property(
1784
alt_interface, attribute._dbus_signature,
1785
attribute._dbus_access,
1786
attribute._dbus_get_args_options
1787
["byte_arrays"])
1788
(copy_function(attribute)))
1789
# Copy annotations, if any
1790
try:
1791
attr[attrname]._dbus_annotations = dict(
1792
attribute._dbus_annotations)
1793
except AttributeError:
1794
pass
1795
# Is this a D-Bus interface?
1796
elif getattr(attribute, "_dbus_is_interface", False):
1797
# Create a new, but exactly alike, function
1798
# object. Decorate it to be a new D-Bus interface
1799
# with the alternate D-Bus interface name. Add it
1800
# to the class.
1801
attr[attrname] = (
1802
dbus_interface_annotations(alt_interface)
1803
(copy_function(attribute)))
1804
if deprecate:
1805
# Deprecate all alternate interfaces
1806
iname = "_AlternateDBusNames_interface_annotation{}"
1807
for interface_name in interface_names:
1808
1809
@dbus_interface_annotations(interface_name)
1810
def func(self):
1811
return {"org.freedesktop.DBus.Deprecated":
1812
"true"}
1813
# Find an unused name
1814
for aname in (iname.format(i)
1815
for i in itertools.count()):
1816
if aname not in attr:
1817
attr[aname] = func
1818
break
1819
if interface_names:
1820
# Replace the class with a new subclass of it with
1821
# methods, signals, etc. as created above.
1822
if sys.version_info.major == 2:
1823
cls = type(b"{}Alternate".format(cls.__name__),
1824
(cls, ), attr)
1825
else:
1826
cls = type("{}Alternate".format(cls.__name__),
1827
(cls, ), attr)
1828
return cls
1829
1830
return wrapper
1831
1832
1833
@alternate_dbus_interfaces({"se.recompile.Mandos":
1834
"se.bsnet.fukt.Mandos"})
1020
attr[attrname] = (dbus_service_property
1021
(alt_interface,
1022
attribute._dbus_signature,
1023
attribute._dbus_access,
1024
attribute
1025
._dbus_get_args_options
1026
["byte_arrays"])
1027
(types.FunctionType
1028
(attribute.func_code,
1029
attribute.func_globals,
1030
attribute.func_name,
1031
attribute.func_defaults,
1032
attribute.func_closure)))
1033
return type.__new__(mcs, name, bases, attr)
1034
1035
1835
1036
class ClientDBus(Client, DBusObjectWithProperties):
1836
1037
"""A Client class using D-Bus
1837
1038
1838
1039
Attributes:
1839
1040
dbus_object_path: dbus.ObjectPath
1840
1041
bus: dbus.SystemBus()
1841
1042
"""
1842
1043
1843
1044
runtime_expansions = (Client.runtime_expansions
1844
+ ("dbus_object_path", ))
1845
1846
_interface = "se.recompile.Mandos.Client"
1847
1045
+ ("dbus_object_path",))
1046
1848
1047
# dbus.service.Object doesn't use super(), so we can't either.
1849
1850
def __init__(self, bus=None, *args, **kwargs):
1048
1049
def __init__(self, bus = None, *args, **kwargs):
1851
1050
self.bus = bus
1852
1051
Client.__init__(self, *args, **kwargs)
1052
self._approvals_pending = 0
1053
1054
self._approvals_pending = 0
1853
1055
# Only now, when this client is initialized, can it show up on
1854
1056
# the D-Bus
1855
client_object_name = str(self.name).translate(
1057
client_object_name = unicode(self.name).translate(
1856
1058
{ord("."): ord("_"),
1857
1059
ord("-"): ord("_")})
1858
self.dbus_object_path = dbus.ObjectPath(
1859
"/clients/" + client_object_name)
1060
self.dbus_object_path = (dbus.ObjectPath
1061
("/clients/" + client_object_name))
1860
1062
DBusObjectWithProperties.__init__(self, self.bus,
1861
1063
self.dbus_object_path)
1862
1863
def notifychangeproperty(transform_func, dbus_name,
1864
type_func=lambda x: x,
1865
variant_level=1,
1866
invalidate_only=False,
1867
_interface=_interface):
1064
1065
def notifychangeproperty(transform_func,
1066
dbus_name, type_func=lambda x: x,
1067
variant_level=1):
1868
1068
""" Modify a variable so that it's a property which announces
1869
1069
its changes to DBus.
1870
1070
1871
1071
transform_fun: Function that takes a value and a variant_level
1872
1072
and transforms it to a D-Bus type.
1873
1073
dbus_name: D-Bus name of the variable
1875
1075
to the D-Bus. Default: no transform
1876
1076
variant_level: D-Bus variant level. Default: 1
1877
1077
"""
1878
attrname = "_{}".format(dbus_name)
1879
1078
attrname = "_{0}".format(dbus_name)
1880
1079
def setter(self, value):
1881
1080
if hasattr(self, "dbus_object_path"):
1882
1081
if (not hasattr(self, attrname) or
1883
1082
type_func(getattr(self, attrname, None))
1884
1083
!= type_func(value)):
1885
if invalidate_only:
1886
self.PropertiesChanged(
1887
_interface, dbus.Dictionary(),
1888
dbus.Array((dbus_name, )))
1889
else:
1890
dbus_value = transform_func(
1891
type_func(value),
1892
variant_level=variant_level)
1893
self.PropertyChanged(dbus.String(dbus_name),
1894
dbus_value)
1895
self.PropertiesChanged(
1896
_interface,
1897
dbus.Dictionary({dbus.String(dbus_name):
1898
dbus_value}),
1899
dbus.Array())
1084
dbus_value = transform_func(type_func(value),
1085
variant_level
1086
=variant_level)
1087
self.PropertyChanged(dbus.String(dbus_name),
1088
dbus_value)
1900
1089
setattr(self, attrname, value)
1901
1090
1902
1091
return property(lambda self: getattr(self, attrname), setter)
1903
1092
1093
1904
1094
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1905
1095
approvals_pending = notifychangeproperty(dbus.Boolean,
1906
1096
"ApprovalPending",
1907
type_func=bool)
1097
type_func = bool)
1908
1098
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1909
1099
last_enabled = notifychangeproperty(datetime_to_dbus,
1910
1100
"LastEnabled")
1911
checker = notifychangeproperty(
1912
dbus.Boolean, "CheckerRunning",
1913
type_func=lambda checker: checker is not None)
1101
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1102
type_func = lambda checker:
1103
checker is not None)
1914
1104
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1915
1105
"LastCheckedOK")
1916
last_checker_status = notifychangeproperty(dbus.Int16,
1917
"LastCheckerStatus")
1918
1106
last_approval_request = notifychangeproperty(
1919
1107
datetime_to_dbus, "LastApprovalRequest")
1920
1108
approved_by_default = notifychangeproperty(dbus.Boolean,
1921
1109
"ApprovedByDefault")
1922
approval_delay = notifychangeproperty(
1923
dbus.UInt64, "ApprovalDelay",
1924
type_func=lambda td: td.total_seconds() * 1000)
1110
approval_delay = notifychangeproperty(dbus.UInt64,
1111
"ApprovalDelay",
1112
type_func =
1113
timedelta_to_milliseconds)
1925
1114
approval_duration = notifychangeproperty(
1926
1115
dbus.UInt64, "ApprovalDuration",
1927
type_func=lambda td: td.total_seconds() * 1000)
1116
type_func = timedelta_to_milliseconds)
1928
1117
host = notifychangeproperty(dbus.String, "Host")
1929
timeout = notifychangeproperty(
1930
dbus.UInt64, "Timeout",
1931
type_func=lambda td: td.total_seconds() * 1000)
1118
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1119
type_func =
1120
timedelta_to_milliseconds)
1932
1121
extended_timeout = notifychangeproperty(
1933
1122
dbus.UInt64, "ExtendedTimeout",
1934
type_func=lambda td: td.total_seconds() * 1000)
1935
interval = notifychangeproperty(
1936
dbus.UInt64, "Interval",
1937
type_func=lambda td: td.total_seconds() * 1000)
1123
type_func = timedelta_to_milliseconds)
1124
interval = notifychangeproperty(dbus.UInt64,
1125
"Interval",
1126
type_func =
1127
timedelta_to_milliseconds)
1938
1128
checker_command = notifychangeproperty(dbus.String, "Checker")
1939
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1940
invalidate_only=True)
1941
1129
1942
1130
del notifychangeproperty
1943
1131
1944
1132
def __del__(self, *args, **kwargs):
1945
1133
try:
1946
1134
self.remove_from_connection()
1949
1137
if hasattr(DBusObjectWithProperties, "__del__"):
1950
1138
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1951
1139
Client.__del__(self, *args, **kwargs)
1952
1953
def checker_callback(self, source, condition,
1954
connection, command, *args, **kwargs):
1955
ret = Client.checker_callback(self, source, condition,
1956
connection, command, *args,
1957
**kwargs)
1958
exitstatus = self.last_checker_status
1959
if exitstatus >= 0:
1140
1141
def checker_callback(self, pid, condition, command,
1142
*args, **kwargs):
1143
self.checker_callback_tag = None
1144
self.checker = None
1145
if os.WIFEXITED(condition):
1146
exitstatus = os.WEXITSTATUS(condition)
1960
1147
# Emit D-Bus signal
1961
1148
self.CheckerCompleted(dbus.Int16(exitstatus),
1962
# This is specific to GNU libC
1963
dbus.Int64(exitstatus << 8),
1149
dbus.Int64(condition),
1964
1150
dbus.String(command))
1965
1151
else:
1966
1152
# Emit D-Bus signal
1967
1153
self.CheckerCompleted(dbus.Int16(-1),
1968
dbus.Int64(
1969
# This is specific to GNU libC
1970
(exitstatus << 8)
1971
| self.last_checker_signal),
1154
dbus.Int64(condition),
1972
1155
dbus.String(command))
1973
return ret
1974
1156
1157
return Client.checker_callback(self, pid, condition, command,
1158
*args, **kwargs)
1159
1975
1160
def start_checker(self, *args, **kwargs):
1976
old_checker_pid = getattr(self.checker, "pid", None)
1161
old_checker = self.checker
1162
if self.checker is not None:
1163
old_checker_pid = self.checker.pid
1164
else:
1165
old_checker_pid = None
1977
1166
r = Client.start_checker(self, *args, **kwargs)
1978
1167
# Only if new checker process was started
1979
1168
if (self.checker is not None
1981
1170
# Emit D-Bus signal
1982
1171
self.CheckerStarted(self.current_checker_command)
1983
1172
return r
1984
1173
1985
1174
def _reset_approved(self):
1986
1175
self.approved = None
1987
1176
return False
1988
1177
1989
1178
def approve(self, value=True):
1179
self.send_changedstate()
1990
1180
self.approved = value
1991
GLib.timeout_add(int(self.approval_duration.total_seconds()
1992
* 1000), self._reset_approved)
1993
self.send_changedstate()
1994
1995
# D-Bus methods, signals & properties
1996
1997
# Interfaces
1998
1999
# Signals
2000
1181
gobject.timeout_add(timedelta_to_milliseconds
1182
(self.approval_duration),
1183
self._reset_approved)
1184
1185
1186
## D-Bus methods, signals & properties
1187
_interface = "se.recompile.Mandos.Client"
1188
1189
## Signals
1190
2001
1191
# CheckerCompleted - signal
2002
1192
@dbus.service.signal(_interface, signature="nxs")
2003
1193
def CheckerCompleted(self, exitcode, waitstatus, command):
2004
1194
"D-Bus signal"
2005
1195
pass
2006
1196
2007
1197
# CheckerStarted - signal
2008
1198
@dbus.service.signal(_interface, signature="s")
2009
1199
def CheckerStarted(self, command):
2010
1200
"D-Bus signal"
2011
1201
pass
2012
1202
2013
1203
# PropertyChanged - signal
2014
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2015
1204
@dbus.service.signal(_interface, signature="sv")
2016
1205
def PropertyChanged(self, property, value):
2017
1206
"D-Bus signal"
2018
1207
pass
2019
1208
2020
1209
# GotSecret - signal
2021
1210
@dbus.service.signal(_interface)
2022
1211
def GotSecret(self):
2025
1214
server to mandos-client
2026
1215
"""
2027
1216
pass
2028
1217
2029
1218
# Rejected - signal
2030
1219
@dbus.service.signal(_interface, signature="s")
2031
1220
def Rejected(self, reason):
2032
1221
"D-Bus signal"
2033
1222
pass
2034
1223
2035
1224
# NeedApproval - signal
2036
1225
@dbus.service.signal(_interface, signature="tb")
2037
1226
def NeedApproval(self, timeout, default):
2038
1227
"D-Bus signal"
2039
1228
return self.need_approval()
2040
2041
# Methods
2042
1229
1230
# NeRwequest - signal
1231
@dbus.service.signal(_interface, signature="s")
1232
def NewRequest(self, ip):
1233
"""D-Bus signal
1234
Is sent after a client request a password.
1235
"""
1236
pass
1237
1238
## Methods
1239
2043
1240
# Approve - method
2044
1241
@dbus.service.method(_interface, in_signature="b")
2045
1242
def Approve(self, value):
2046
1243
self.approve(value)
2047
1244
2048
1245
# CheckedOK - method
2049
1246
@dbus.service.method(_interface)
2050
1247
def CheckedOK(self):
2051
1248
self.checked_ok()
2052
1249
2053
1250
# Enable - method
2054
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2055
1251
@dbus.service.method(_interface)
2056
1252
def Enable(self):
2057
1253
"D-Bus method"
2058
1254
self.enable()
2059
1255
2060
1256
# StartChecker - method
2061
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2062
1257
@dbus.service.method(_interface)
2063
1258
def StartChecker(self):
2064
1259
"D-Bus method"
2065
1260
self.start_checker()
2066
1261
2067
1262
# Disable - method
2068
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2069
1263
@dbus.service.method(_interface)
2070
1264
def Disable(self):
2071
1265
"D-Bus method"
2072
1266
self.disable()
2073
1267
2074
1268
# StopChecker - method
2075
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2076
1269
@dbus.service.method(_interface)
2077
1270
def StopChecker(self):
2078
1271
self.stop_checker()
2079
2080
# Properties
2081
1272
1273
## Properties
1274
2082
1275
# ApprovalPending - property
2083
1276
@dbus_service_property(_interface, signature="b", access="read")
2084
1277
def ApprovalPending_dbus_property(self):
2085
1278
return dbus.Boolean(bool(self.approvals_pending))
2086
1279
2087
1280
# ApprovedByDefault - property
2088
@dbus_service_property(_interface,
2089
signature="b",
1281
@dbus_service_property(_interface, signature="b",
2090
1282
access="readwrite")
2091
1283
def ApprovedByDefault_dbus_property(self, value=None):
2092
1284
if value is None: # get
2093
1285
return dbus.Boolean(self.approved_by_default)
2094
1286
self.approved_by_default = bool(value)
2095
1287
2096
1288
# ApprovalDelay - property
2097
@dbus_service_property(_interface,
2098
signature="t",
1289
@dbus_service_property(_interface, signature="t",
2099
1290
access="readwrite")
2100
1291
def ApprovalDelay_dbus_property(self, value=None):
2101
1292
if value is None: # get
2102
return dbus.UInt64(self.approval_delay.total_seconds()
2103
* 1000)
1293
return dbus.UInt64(self.approval_delay_milliseconds())
2104
1294
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2105
1295
2106
1296
# ApprovalDuration - property
2107
@dbus_service_property(_interface,
2108
signature="t",
1297
@dbus_service_property(_interface, signature="t",
2109
1298
access="readwrite")
2110
1299
def ApprovalDuration_dbus_property(self, value=None):
2111
1300
if value is None: # get
2112
return dbus.UInt64(self.approval_duration.total_seconds()
2113
* 1000)
1301
return dbus.UInt64(timedelta_to_milliseconds(
1302
self.approval_duration))
2114
1303
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2115
1304
2116
1305
# Name - property
2117
@dbus_annotations(
2118
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2119
1306
@dbus_service_property(_interface, signature="s", access="read")
2120
1307
def Name_dbus_property(self):
2121
1308
return dbus.String(self.name)
2122
2123
# KeyID - property
2124
@dbus_annotations(
2125
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2126
@dbus_service_property(_interface, signature="s", access="read")
2127
def KeyID_dbus_property(self):
2128
return dbus.String(self.key_id)
2129
1309
2130
1310
# Fingerprint - property
2131
@dbus_annotations(
2132
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2133
1311
@dbus_service_property(_interface, signature="s", access="read")
2134
1312
def Fingerprint_dbus_property(self):
2135
1313
return dbus.String(self.fingerprint)
2136
1314
2137
1315
# Host - property
2138
@dbus_service_property(_interface,
2139
signature="s",
1316
@dbus_service_property(_interface, signature="s",
2140
1317
access="readwrite")
2141
1318
def Host_dbus_property(self, value=None):
2142
1319
if value is None: # get
2143
1320
return dbus.String(self.host)
2144
self.host = str(value)
2145
1321
self.host = unicode(value)
1322
2146
1323
# Created - property
2147
@dbus_annotations(
2148
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2149
1324
@dbus_service_property(_interface, signature="s", access="read")
2150
1325
def Created_dbus_property(self):
2151
1326
return datetime_to_dbus(self.created)
2152
1327
2153
1328
# LastEnabled - property
2154
1329
@dbus_service_property(_interface, signature="s", access="read")
2155
1330
def LastEnabled_dbus_property(self):
2156
1331
return datetime_to_dbus(self.last_enabled)
2157
1332
2158
1333
# Enabled - property
2159
@dbus_service_property(_interface,
2160
signature="b",
1334
@dbus_service_property(_interface, signature="b",
2161
1335
access="readwrite")
2162
1336
def Enabled_dbus_property(self, value=None):
2163
1337
if value is None: # get
2166
1340
self.enable()
2167
1341
else:
2168
1342
self.disable()
2169
1343
2170
1344
# LastCheckedOK - property
2171
@dbus_service_property(_interface,
2172
signature="s",
1345
@dbus_service_property(_interface, signature="s",
2173
1346
access="readwrite")
2174
1347
def LastCheckedOK_dbus_property(self, value=None):
2175
1348
if value is not None:
2176
1349
self.checked_ok()
2177
1350
return
2178
1351
return datetime_to_dbus(self.last_checked_ok)
2179
2180
# LastCheckerStatus - property
2181
@dbus_service_property(_interface, signature="n", access="read")
2182
def LastCheckerStatus_dbus_property(self):
2183
return dbus.Int16(self.last_checker_status)
2184
1352
2185
1353
# Expires - property
2186
1354
@dbus_service_property(_interface, signature="s", access="read")
2187
1355
def Expires_dbus_property(self):
2188
1356
return datetime_to_dbus(self.expires)
2189
1357
2190
1358
# LastApprovalRequest - property
2191
1359
@dbus_service_property(_interface, signature="s", access="read")
2192
1360
def LastApprovalRequest_dbus_property(self):
2193
1361
return datetime_to_dbus(self.last_approval_request)
2194
1362
2195
1363
# Timeout - property
2196
@dbus_service_property(_interface,
2197
signature="t",
1364
@dbus_service_property(_interface, signature="t",
2198
1365
access="readwrite")
2199
1366
def Timeout_dbus_property(self, value=None):
2200
1367
if value is None: # get
2201
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2202
old_timeout = self.timeout
1368
return dbus.UInt64(self.timeout_milliseconds())
2203
1369
self.timeout = datetime.timedelta(0, 0, 0, value)
2204
# Reschedule disabling
1370
# Reschedule timeout
2205
1371
if self.enabled:
2206
1372
now = datetime.datetime.utcnow()
2207
self.expires += self.timeout - old_timeout
2208
if self.expires <= now:
1373
time_to_die = timedelta_to_milliseconds(
1374
(self.last_checked_ok + self.timeout) - now)
1375
if time_to_die <= 0:
2209
1376
# The timeout has passed
2210
1377
self.disable()
2211
1378
else:
1379
self.expires = (now +
1380
datetime.timedelta(milliseconds =
1381
time_to_die))
2212
1382
if (getattr(self, "disable_initiator_tag", None)
2213
1383
is None):
2214
1384
return
2215
GLib.source_remove(self.disable_initiator_tag)
2216
self.disable_initiator_tag = GLib.timeout_add(
2217
int((self.expires - now).total_seconds() * 1000),
2218
self.disable)
2219
1385
gobject.source_remove(self.disable_initiator_tag)
1386
self.disable_initiator_tag = (gobject.timeout_add
1387
(time_to_die,
1388
self.disable))
1389
2220
1390
# ExtendedTimeout - property
2221
@dbus_service_property(_interface,
2222
signature="t",
1391
@dbus_service_property(_interface, signature="t",
2223
1392
access="readwrite")
2224
1393
def ExtendedTimeout_dbus_property(self, value=None):
2225
1394
if value is None: # get
2226
return dbus.UInt64(self.extended_timeout.total_seconds()
2227
* 1000)
1395
return dbus.UInt64(self.extended_timeout_milliseconds())
2228
1396
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2229
1397
2230
1398
# Interval - property
2231
@dbus_service_property(_interface,
2232
signature="t",
1399
@dbus_service_property(_interface, signature="t",
2233
1400
access="readwrite")
2234
1401
def Interval_dbus_property(self, value=None):
2235
1402
if value is None: # get
2236
return dbus.UInt64(self.interval.total_seconds() * 1000)
1403
return dbus.UInt64(self.interval_milliseconds())
2237
1404
self.interval = datetime.timedelta(0, 0, 0, value)
2238
1405
if getattr(self, "checker_initiator_tag", None) is None:
2239
1406
return
2240
1407
if self.enabled:
2241
1408
# Reschedule checker run
2242
GLib.source_remove(self.checker_initiator_tag)
2243
self.checker_initiator_tag = GLib.timeout_add(
2244
value, self.start_checker)
2245
self.start_checker() # Start one now, too
2246
1409
gobject.source_remove(self.checker_initiator_tag)
1410
self.checker_initiator_tag = (gobject.timeout_add
1411
(value, self.start_checker))
1412
self.start_checker() # Start one now, too
1413
2247
1414
# Checker - property
2248
@dbus_service_property(_interface,
2249
signature="s",
1415
@dbus_service_property(_interface, signature="s",
2250
1416
access="readwrite")
2251
1417
def Checker_dbus_property(self, value=None):
2252
1418
if value is None: # get
2253
1419
return dbus.String(self.checker_command)
2254
self.checker_command = str(value)
2255
1420
self.checker_command = unicode(value)
1421
2256
1422
# CheckerRunning - property
2257
@dbus_service_property(_interface,
2258
signature="b",
1423
@dbus_service_property(_interface, signature="b",
2259
1424
access="readwrite")
2260
1425
def CheckerRunning_dbus_property(self, value=None):
2261
1426
if value is None: # get
2264
1429
self.start_checker()
2265
1430
else:
2266
1431
self.stop_checker()
2267
1432
2268
1433
# ObjectPath - property
2269
@dbus_annotations(
2270
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2271
"org.freedesktop.DBus.Deprecated": "true"})
2272
1434
@dbus_service_property(_interface, signature="o", access="read")
2273
1435
def ObjectPath_dbus_property(self):
2274
return self.dbus_object_path # is already a dbus.ObjectPath
2275
1436
return self.dbus_object_path # is already a dbus.ObjectPath
1437
2276
1438
# Secret = property
2277
@dbus_annotations(
2278
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2279
"invalidates"})
2280
@dbus_service_property(_interface,
2281
signature="ay",
2282
access="write",
2283
byte_arrays=True)
1439
@dbus_service_property(_interface, signature="ay",
1440
access="write", byte_arrays=True)
2284
1441
def Secret_dbus_property(self, value):
2285
self.secret = bytes(value)
2286
1442
self.secret = str(value)
1443
2287
1444
del _interface
2288
1445
2289
1446
2290
class ProxyClient:
2291
def __init__(self, child_pipe, key_id, fpr, address):
1447
class ProxyClient(object):
1448
def __init__(self, child_pipe, fpr, address):
2292
1449
self._pipe = child_pipe
2293
self._pipe.send(("init", key_id, fpr, address))
1450
self._pipe.send(('init', fpr, address))
2294
1451
if not self._pipe.recv():
2295
raise KeyError(key_id or fpr)
2296
1452
raise KeyError()
1453
2297
1454
def __getattribute__(self, name):
2298
if name == "_pipe":
1455
if name == '_pipe':
2299
1456
return super(ProxyClient, self).__getattribute__(name)
2300
self._pipe.send(("getattr", name))
1457
self._pipe.send(('getattr', name))
2301
1458
data = self._pipe.recv()
2302
if data[0] == "data":
1459
if data[0] == 'data':
2303
1460
return data[1]
2304
if data[0] == "function":
2305
1461
if data[0] == 'function':
2306
1462
def func(*args, **kwargs):
2307
self._pipe.send(("funcall", name, args, kwargs))
1463
self._pipe.send(('funcall', name, args, kwargs))
2308
1464
return self._pipe.recv()[1]
2309
2310
1465
return func
2311
1466
2312
1467
def __setattr__(self, name, value):
2313
if name == "_pipe":
1468
if name == '_pipe':
2314
1469
return super(ProxyClient, self).__setattr__(name, value)
2315
self._pipe.send(("setattr", name, value))
1470
self._pipe.send(('setattr', name, value))
1471
1472
1473
class ClientDBusTransitional(ClientDBus):
1474
__metaclass__ = AlternateDBusNamesMetaclass
2316
1475
2317
1476
2318
1477
class ClientHandler(socketserver.BaseRequestHandler, object):
2319
1478
"""A class to handle client connections.
2320
1479
2321
1480
Instantiated once for each connection to handle it.
2322
1481
Note: This will run in its own forked process."""
2323
1482
2324
1483
def handle(self):
2325
1484
with contextlib.closing(self.server.child_pipe) as child_pipe:
2326
log.info("TCP connection from: %s",
2327
str(self.client_address))
2328
log.debug("Pipe FD: %d", self.server.child_pipe.fileno())
2329
2330
session = gnutls.ClientSession(self.request)
2331
2332
# priority = ":".join(("NONE", "+VERS-TLS1.1",
2333
# "+AES-256-CBC", "+SHA1",
2334
# "+COMP-NULL", "+CTYPE-OPENPGP",
2335
# "+DHE-DSS"))
1485
logger.info("TCP connection from: %s",
1486
unicode(self.client_address))
1487
logger.debug("Pipe FD: %d",
1488
self.server.child_pipe.fileno())
1489
1490
session = (gnutls.connection
1491
.ClientSession(self.request,
1492
gnutls.connection
1493
.X509Credentials()))
1494
1495
# Note: gnutls.connection.X509Credentials is really a
1496
# generic GnuTLS certificate credentials object so long as
1497
# no X.509 keys are added to it. Therefore, we can use it
1498
# here despite using OpenPGP certificates.
1499
1500
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1501
# "+AES-256-CBC", "+SHA1",
1502
# "+COMP-NULL", "+CTYPE-OPENPGP",
1503
# "+DHE-DSS"))
2336
1504
# Use a fallback default, since this MUST be set.
2337
1505
priority = self.server.gnutls_priority
2338
1506
if priority is None:
2339
1507
priority = "NORMAL"
2340
gnutls.priority_set_direct(session,
2341
priority.encode("utf-8"), None)
2342
1508
(gnutls.library.functions
1509
.gnutls_priority_set_direct(session._c_object,
1510
priority, None))
1511
2343
1512
# Start communication using the Mandos protocol
2344
1513
# Get protocol number
2345
1514
line = self.request.makefile().readline()
2346
log.debug("Protocol version: %r", line)
1515
logger.debug("Protocol version: %r", line)
2347
1516
try:
2348
1517
if int(line.strip().split()[0]) > 1:
2349
raise RuntimeError(line)
1518
raise RuntimeError
2350
1519
except (ValueError, IndexError, RuntimeError) as error:
2351
log.error("Unknown protocol version: %s", error)
1520
logger.error("Unknown protocol version: %s", error)
2352
1521
return
2353
1522
2354
1523
# Start GnuTLS connection
2355
1524
try:
2356
1525
session.handshake()
2357
except gnutls.Error as error:
2358
log.warning("Handshake failed: %s", error)
1526
except gnutls.errors.GNUTLSError as error:
1527
logger.warning("Handshake failed: %s", error)
2359
1528
# Do not run session.bye() here: the session is not
2360
1529
# established. Just abandon the request.
2361
1530
return
2362
log.debug("Handshake succeeded")
2363
1531
logger.debug("Handshake succeeded")
1532
2364
1533
approval_required = False
2365
1534
try:
2366
if gnutls.has_rawpk:
2367
fpr = b""
2368
try:
2369
key_id = self.key_id(
2370
self.peer_certificate(session))
2371
except (TypeError, gnutls.Error) as error:
2372
log.warning("Bad certificate: %s", error)
2373
return
2374
log.debug("Key ID: %s",
2375
key_id.decode("utf-8",
2376
errors="replace"))
2377
2378
else:
2379
key_id = b""
2380
try:
2381
fpr = self.fingerprint(
2382
self.peer_certificate(session))
2383
except (TypeError, gnutls.Error) as error:
2384
log.warning("Bad certificate: %s", error)
2385
return
2386
log.debug("Fingerprint: %s", fpr)
2387
2388
try:
2389
client = ProxyClient(child_pipe, key_id, fpr,
1535
try:
1536
fpr = self.fingerprint(self.peer_certificate
1537
(session))
1538
except (TypeError,
1539
gnutls.errors.GNUTLSError) as error:
1540
logger.warning("Bad certificate: %s", error)
1541
return
1542
logger.debug("Fingerprint: %s", fpr)
1543
1544
try:
1545
client = ProxyClient(child_pipe, fpr,
2390
1546
self.client_address)
2391
1547
except KeyError:
2392
1548
return
2393
1549
1550
if self.server.use_dbus:
1551
# Emit D-Bus signal
1552
client.NewRequest(str(self.client_address))
1553
2394
1554
if client.approval_delay:
2395
1555
delay = client.approval_delay
2396
1556
client.approvals_pending += 1
2397
1557
approval_required = True
2398
1558
2399
1559
while True:
2400
1560
if not client.enabled:
2401
log.info("Client %s is disabled", client.name)
1561
logger.info("Client %s is disabled",
1562
client.name)
2402
1563
if self.server.use_dbus:
2403
1564
# Emit D-Bus signal
2404
1565
client.Rejected("Disabled")
2405
1566
return
2406
1567
2407
1568
if client.approved or not client.approval_delay:
2408
# We are approved or approval is disabled
1569
#We are approved or approval is disabled
2409
1570
break
2410
1571
elif client.approved is None:
2411
log.info("Client %s needs approval",
2412
client.name)
1572
logger.info("Client %s needs approval",
1573
client.name)
2413
1574
if self.server.use_dbus:
2414
1575
# Emit D-Bus signal
2415
1576
client.NeedApproval(
2416
client.approval_delay.total_seconds()
2417
* 1000, client.approved_by_default)
1577
client.approval_delay_milliseconds(),
1578
client.approved_by_default)
2418
1579
else:
2419
log.warning("Client %s was not approved",
2420
client.name)
1580
logger.warning("Client %s was not approved",
1581
client.name)
2421
1582
if self.server.use_dbus:
2422
1583
# Emit D-Bus signal
2423
1584
client.Rejected("Denied")
2424
1585
return
2425
2426
# wait until timeout or approved
1586
1587
#wait until timeout or approved
2427
1588
time = datetime.datetime.now()
2428
1589
client.changedstate.acquire()
2429
client.changedstate.wait(delay.total_seconds())
1590
(client.changedstate.wait
1591
(float(client.timedelta_to_milliseconds(delay)
1592
/ 1000)))
2430
1593
client.changedstate.release()
2431
1594
time2 = datetime.datetime.now()
2432
1595
if (time2 - time) >= delay:
2433
1596
if not client.approved_by_default:
2434
log.warning("Client %s timed out while"
2435
" waiting for approval",
2436
client.name)
1597
logger.warning("Client %s timed out while"
1598
" waiting for approval",
1599
client.name)
2437
1600
if self.server.use_dbus:
2438
1601
# Emit D-Bus signal
2439
1602
client.Rejected("Approval timed out")
2442
1605
break
2443
1606
else:
2444
1607
delay -= time2 - time
2445
2446
try:
2447
session.send(client.secret)
2448
except gnutls.Error as error:
2449
log.warning("gnutls send failed", exc_info=error)
2450
return
2451
2452
log.info("Sending secret to %s", client.name)
1608
1609
sent_size = 0
1610
while sent_size < len(client.secret):
1611
try:
1612
sent = session.send(client.secret[sent_size:])
1613
except gnutls.errors.GNUTLSError as error:
1614
logger.warning("gnutls send failed")
1615
return
1616
logger.debug("Sent: %d, remaining: %d",
1617
sent, len(client.secret)
1618
- (sent_size + sent))
1619
sent_size += sent
1620
1621
logger.info("Sending secret to %s", client.name)
2453
1622
# bump the timeout using extended_timeout
2454
client.bump_timeout(client.extended_timeout)
1623
client.checked_ok(client.extended_timeout)
2455
1624
if self.server.use_dbus:
2456
1625
# Emit D-Bus signal
2457
1626
client.GotSecret()
2458
1627
2459
1628
finally:
2460
1629
if approval_required:
2461
1630
client.approvals_pending -= 1
2462
1631
try:
2463
1632
session.bye()
2464
except gnutls.Error as error:
2465
log.warning("GnuTLS bye failed", exc_info=error)
2466
1633
except gnutls.errors.GNUTLSError as error:
1634
logger.warning("GnuTLS bye failed")
1635
2467
1636
@staticmethod
2468
1637
def peer_certificate(session):
2469
"Return the peer's certificate as a bytestring"
2470
try:
2471
cert_type = gnutls.certificate_type_get2(
2472
session, gnutls.CTYPE_PEERS)
2473
except AttributeError:
2474
cert_type = gnutls.certificate_type_get(session)
2475
if gnutls.has_rawpk:
2476
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2477
else:
2478
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2479
# If not a valid certificate type...
2480
if cert_type not in valid_cert_types:
2481
log.info("Cert type %r not in %r", cert_type,
2482
valid_cert_types)
2483
# ...return invalid data
2484
return b""
1638
"Return the peer's OpenPGP certificate as a bytestring"
1639
# If not an OpenPGP certificate...
1640
if (gnutls.library.functions
1641
.gnutls_certificate_type_get(session._c_object)
1642
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1643
# ...do the normal thing
1644
return session.peer_certificate
2485
1645
list_size = ctypes.c_uint(1)
2486
cert_list = (gnutls.certificate_get_peers
2487
(session, ctypes.byref(list_size)))
1646
cert_list = (gnutls.library.functions
1647
.gnutls_certificate_get_peers
1648
(session._c_object, ctypes.byref(list_size)))
2488
1649
if not bool(cert_list) and list_size.value != 0:
2489
raise gnutls.Error("error getting peer certificate")
1650
raise gnutls.errors.GNUTLSError("error getting peer"
1651
" certificate")
2490
1652
if list_size.value == 0:
2491
1653
return None
2492
1654
cert = cert_list[0]
2493
1655
return ctypes.string_at(cert.data, cert.size)
2494
2495
@staticmethod
2496
def key_id(certificate):
2497
"Convert a certificate bytestring to a hexdigit key ID"
2498
# New GnuTLS "datum" with the public key
2499
datum = gnutls.datum_t(
2500
ctypes.cast(ctypes.c_char_p(certificate),
2501
ctypes.POINTER(ctypes.c_ubyte)),
2502
ctypes.c_uint(len(certificate)))
2503
# XXX all these need to be created in the gnutls "module"
2504
# New empty GnuTLS certificate
2505
pubkey = gnutls.pubkey_t()
2506
gnutls.pubkey_init(ctypes.byref(pubkey))
2507
# Import the raw public key into the certificate
2508
gnutls.pubkey_import(pubkey,
2509
ctypes.byref(datum),
2510
gnutls.X509_FMT_DER)
2511
# New buffer for the key ID
2512
buf = ctypes.create_string_buffer(32)
2513
buf_len = ctypes.c_size_t(len(buf))
2514
# Get the key ID from the raw public key into the buffer
2515
gnutls.pubkey_get_key_id(
2516
pubkey,
2517
gnutls.KEYID_USE_SHA256,
2518
ctypes.cast(ctypes.byref(buf),
2519
ctypes.POINTER(ctypes.c_ubyte)),
2520
ctypes.byref(buf_len))
2521
# Deinit the certificate
2522
gnutls.pubkey_deinit(pubkey)
2523
2524
# Convert the buffer to a Python bytestring
2525
key_id = ctypes.string_at(buf, buf_len.value)
2526
# Convert the bytestring to hexadecimal notation
2527
hex_key_id = binascii.hexlify(key_id).upper()
2528
return hex_key_id
2529
1656
2530
1657
@staticmethod
2531
1658
def fingerprint(openpgp):
2532
1659
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2533
1660
# New GnuTLS "datum" with the OpenPGP public key
2534
datum = gnutls.datum_t(
2535
ctypes.cast(ctypes.c_char_p(openpgp),
2536
ctypes.POINTER(ctypes.c_ubyte)),
2537
ctypes.c_uint(len(openpgp)))
1661
datum = (gnutls.library.types
1662
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1663
ctypes.POINTER
1664
(ctypes.c_ubyte)),
1665
ctypes.c_uint(len(openpgp))))
2538
1666
# New empty GnuTLS certificate
2539
crt = gnutls.openpgp_crt_t()
2540
gnutls.openpgp_crt_init(ctypes.byref(crt))
1667
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1668
(gnutls.library.functions
1669
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2541
1670
# Import the OpenPGP public key into the certificate
2542
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2543
gnutls.OPENPGP_FMT_RAW)
1671
(gnutls.library.functions
1672
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1673
gnutls.library.constants
1674
.GNUTLS_OPENPGP_FMT_RAW))
2544
1675
# Verify the self signature in the key
2545
1676
crtverify = ctypes.c_uint()
2546
gnutls.openpgp_crt_verify_self(crt, 0,
2547
ctypes.byref(crtverify))
1677
(gnutls.library.functions
1678
.gnutls_openpgp_crt_verify_self(crt, 0,
1679
ctypes.byref(crtverify)))
2548
1680
if crtverify.value != 0:
2549
gnutls.openpgp_crt_deinit(crt)
2550
raise gnutls.CertificateSecurityError(code
2551
=crtverify.value)
1681
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1682
raise (gnutls.errors.CertificateSecurityError
1683
("Verify failed"))
2552
1684
# New buffer for the fingerprint
2553
1685
buf = ctypes.create_string_buffer(20)
2554
1686
buf_len = ctypes.c_size_t()
2555
1687
# Get the fingerprint from the certificate into the buffer
2556
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2557
ctypes.byref(buf_len))
1688
(gnutls.library.functions
1689
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1690
ctypes.byref(buf_len)))
2558
1691
# Deinit the certificate
2559
gnutls.openpgp_crt_deinit(crt)
1692
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2560
1693
# Convert the buffer to a Python bytestring
2561
1694
fpr = ctypes.string_at(buf, buf_len.value)
2562
1695
# Convert the bytestring to hexadecimal notation
2564
1697
return hex_fpr
2565
1698
2566
1699
2567
class MultiprocessingMixIn:
1700
class MultiprocessingMixIn(object):
2568
1701
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2569
2570
1702
def sub_process_main(self, request, address):
2571
1703
try:
2572
1704
self.finish_request(request, address)
2573
1705
except Exception:
2574
1706
self.handle_error(request, address)
2575
1707
self.close_request(request)
2576
1708
2577
1709
def process_request(self, request, address):
2578
1710
"""Start a new process to process the request."""
2579
proc = multiprocessing.Process(target=self.sub_process_main,
2580
args=(request, address))
1711
proc = multiprocessing.Process(target = self.sub_process_main,
1712
args = (request,
1713
address))
2581
1714
proc.start()
2582
1715
return proc
2583
1716
2584
1717
2585
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1718
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2586
1719
""" adds a pipe to the MixIn """
2587
2588
1720
def process_request(self, request, client_address):
2589
1721
"""Overrides and wraps the original process_request().
2590
1722
2591
1723
This function creates a new pipe in self.pipe
2592
1724
"""
2593
1725
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2594
1726
2595
1727
proc = MultiprocessingMixIn.process_request(self, request,
2596
1728
client_address)
2597
1729
self.child_pipe.close()
2598
1730
self.add_pipe(parent_pipe, proc)
2599
1731
2600
1732
def add_pipe(self, parent_pipe, proc):
2601
1733
"""Dummy function; override as necessary"""
2602
raise NotImplementedError()
1734
raise NotImplementedError
2603
1735
2604
1736
2605
1737
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2606
socketserver.TCPServer):
2607
"""IPv6-capable TCP server. Accepts None as address and/or port
2608
1738
socketserver.TCPServer, object):
1739
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1740
2609
1741
Attributes:
2610
1742
enabled: Boolean; whether this server is activated yet
2611
1743
interface: None or a network interface name (string)
2612
1744
use_ipv6: Boolean; to use IPv6 or not
2613
1745
"""
2614
2615
1746
def __init__(self, server_address, RequestHandlerClass,
2616
interface=None,
2617
use_ipv6=True,
2618
socketfd=None):
2619
"""If socketfd is set, use that file descriptor instead of
2620
creating a new one with socket.socket().
2621
"""
1747
interface=None, use_ipv6=True):
2622
1748
self.interface = interface
2623
1749
if use_ipv6:
2624
1750
self.address_family = socket.AF_INET6
2625
if socketfd is not None:
2626
# Save the file descriptor
2627
self.socketfd = socketfd
2628
# Save the original socket.socket() function
2629
self.socket_socket = socket.socket
2630
2631
# To implement --socket, we monkey patch socket.socket.
2632
#
2633
# (When socketserver.TCPServer is a new-style class, we
2634
# could make self.socket into a property instead of monkey
2635
# patching socket.socket.)
2636
#
2637
# Create a one-time-only replacement for socket.socket()
2638
@functools.wraps(socket.socket)
2639
def socket_wrapper(*args, **kwargs):
2640
# Restore original function so subsequent calls are
2641
# not affected.
2642
socket.socket = self.socket_socket
2643
del self.socket_socket
2644
# This time only, return a new socket object from the
2645
# saved file descriptor.
2646
return socket.fromfd(self.socketfd, *args, **kwargs)
2647
# Replace socket.socket() function with wrapper
2648
socket.socket = socket_wrapper
2649
# The socketserver.TCPServer.__init__ will call
2650
# socket.socket(), which might be our replacement,
2651
# socket_wrapper(), if socketfd was set.
2652
1751
socketserver.TCPServer.__init__(self, server_address,
2653
1752
RequestHandlerClass)
2654
2655
1753
def server_bind(self):
2656
1754
"""This overrides the normal server_bind() function
2657
1755
to bind to an interface if one was specified, and also NOT to
2658
1756
bind to an address or port if they were not specified."""
2659
global SO_BINDTODEVICE
2660
1757
if self.interface is not None:
2661
1758
if SO_BINDTODEVICE is None:
2662
# Fall back to a hard-coded value which seems to be
2663
# common enough.
2664
log.warning("SO_BINDTODEVICE not found, trying 25")
2665
SO_BINDTODEVICE = 25
2666
try:
2667
self.socket.setsockopt(
2668
socket.SOL_SOCKET, SO_BINDTODEVICE,
2669
(self.interface + "\0").encode("utf-8"))
2670
except socket.error as error:
2671
if error.errno == errno.EPERM:
2672
log.error("No permission to bind to interface %s",
2673
self.interface)
2674
elif error.errno == errno.ENOPROTOOPT:
2675
log.error("SO_BINDTODEVICE not available; cannot"
2676
" bind to interface %s", self.interface)
2677
elif error.errno == errno.ENODEV:
2678
log.error("Interface %s does not exist, cannot"
2679
" bind", self.interface)
2680
else:
2681
raise
1759
logger.error("SO_BINDTODEVICE does not exist;"
1760
" cannot bind to interface %s",
1761
self.interface)
1762
else:
1763
try:
1764
self.socket.setsockopt(socket.SOL_SOCKET,
1765
SO_BINDTODEVICE,
1766
str(self.interface
1767
+ '\0'))
1768
except socket.error as error:
1769
if error[0] == errno.EPERM:
1770
logger.error("No permission to"
1771
" bind to interface %s",
1772
self.interface)
1773
elif error[0] == errno.ENOPROTOOPT:
1774
logger.error("SO_BINDTODEVICE not available;"
1775
" cannot bind to interface %s",
1776
self.interface)
1777
else:
1778
raise
2682
1779
# Only bind(2) the socket if we really need to.
2683
1780
if self.server_address[0] or self.server_address[1]:
2684
if self.server_address[1]:
2685
self.allow_reuse_address = True
2686
1781
if not self.server_address[0]:
2687
1782
if self.address_family == socket.AF_INET6:
2688
any_address = "::" # in6addr_any
1783
any_address = "::" # in6addr_any
2689
1784
else:
2690
any_address = "0.0.0.0" # INADDR_ANY
1785
any_address = socket.INADDR_ANY
2691
1786
self.server_address = (any_address,
2692
1787
self.server_address[1])
2693
1788
elif not self.server_address[1]:
2694
self.server_address = (self.server_address[0], 0)
1789
self.server_address = (self.server_address[0],
1790
0)
2695
1791
# if self.interface:
2696
1792
# self.server_address = (self.server_address[0],
2697
1793
# 0, # port
2703
1799
2704
1800
class MandosServer(IPv6_TCPServer):
2705
1801
"""Mandos server.
2706
1802
2707
1803
Attributes:
2708
1804
clients: set of Client objects
2709
1805
gnutls_priority GnuTLS priority string
2710
1806
use_dbus: Boolean; to emit D-Bus signals or not
2711
2712
Assumes a GLib.MainLoop event loop.
1807
1808
Assumes a gobject.MainLoop event loop.
2713
1809
"""
2714
2715
1810
def __init__(self, server_address, RequestHandlerClass,
2716
interface=None,
2717
use_ipv6=True,
2718
clients=None,
2719
gnutls_priority=None,
2720
use_dbus=True,
2721
socketfd=None):
1811
interface=None, use_ipv6=True, clients=None,
1812
gnutls_priority=None, use_dbus=True):
2722
1813
self.enabled = False
2723
1814
self.clients = clients
2724
1815
if self.clients is None:
2727
1818
self.gnutls_priority = gnutls_priority
2728
1819
IPv6_TCPServer.__init__(self, server_address,
2729
1820
RequestHandlerClass,
2730
interface=interface,
2731
use_ipv6=use_ipv6,
2732
socketfd=socketfd)
2733
1821
interface = interface,
1822
use_ipv6 = use_ipv6)
2734
1823
def server_activate(self):
2735
1824
if self.enabled:
2736
1825
return socketserver.TCPServer.server_activate(self)
2737
1826
2738
1827
def enable(self):
2739
1828
self.enabled = True
2740
1829
2741
1830
def add_pipe(self, parent_pipe, proc):
2742
1831
# Call "handle_ipc" for both data and EOF events
2743
GLib.io_add_watch(
2744
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2745
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2746
functools.partial(self.handle_ipc,
2747
parent_pipe=parent_pipe,
2748
proc=proc))
2749
2750
def handle_ipc(self, source, condition,
2751
parent_pipe=None,
2752
proc=None,
2753
client_object=None):
1832
gobject.io_add_watch(parent_pipe.fileno(),
1833
gobject.IO_IN | gobject.IO_HUP,
1834
functools.partial(self.handle_ipc,
1835
parent_pipe =
1836
parent_pipe,
1837
proc = proc))
1838
1839
def handle_ipc(self, source, condition, parent_pipe=None,
1840
proc = None, client_object=None):
1841
condition_names = {
1842
gobject.IO_IN: "IN", # There is data to read.
1843
gobject.IO_OUT: "OUT", # Data can be written (without
1844
# blocking).
1845
gobject.IO_PRI: "PRI", # There is urgent data to read.
1846
gobject.IO_ERR: "ERR", # Error condition.
1847
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1848
# broken, usually for pipes and
1849
# sockets).
1850
}
1851
conditions_string = ' | '.join(name
1852
for cond, name in
1853
condition_names.iteritems()
1854
if cond & condition)
2754
1855
# error, or the other end of multiprocessing.Pipe has closed
2755
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1856
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2756
1857
# Wait for other process to exit
2757
1858
proc.join()
2758
1859
return False
2759
1860
2760
1861
# Read a request from the child
2761
1862
request = parent_pipe.recv()
2762
1863
command = request[0]
2763
2764
if command == "init":
2765
key_id = request[1].decode("ascii")
2766
fpr = request[2].decode("ascii")
2767
address = request[3]
2768
2769
for c in self.clients.values():
2770
if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"
2771
"27AE41E4649B934CA495991B7852B855"):
2772
continue
2773
if key_id and c.key_id == key_id:
2774
client = c
2775
break
2776
if fpr and c.fingerprint == fpr:
1864
1865
if command == 'init':
1866
fpr = request[1]
1867
address = request[2]
1868
1869
for c in self.clients.itervalues():
1870
if c.fingerprint == fpr:
2777
1871
client = c
2778
1872
break
2779
1873
else:
2780
log.info("Client not found for key ID: %s, address:"
2781
" %s", key_id or fpr, address)
1874
logger.info("Client not found for fingerprint: %s, ad"
1875
"dress: %s", fpr, address)
2782
1876
if self.use_dbus:
2783
1877
# Emit D-Bus signal
2784
mandos_dbus_service.ClientNotFound(key_id or fpr,
1878
mandos_dbus_service.ClientNotFound(fpr,
2785
1879
address[0])
2786
1880
parent_pipe.send(False)
2787
1881
return False
2788
2789
GLib.io_add_watch(
2790
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2791
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2792
functools.partial(self.handle_ipc,
2793
parent_pipe=parent_pipe,
2794
proc=proc,
2795
client_object=client))
1882
1883
gobject.io_add_watch(parent_pipe.fileno(),
1884
gobject.IO_IN | gobject.IO_HUP,
1885
functools.partial(self.handle_ipc,
1886
parent_pipe =
1887
parent_pipe,
1888
proc = proc,
1889
client_object =
1890
client))
2796
1891
parent_pipe.send(True)
2797
1892
# remove the old hook in favor of the new above hook on
2798
1893
# same fileno
2799
1894
return False
2800
if command == "funcall":
1895
if command == 'funcall':
2801
1896
funcname = request[1]
2802
1897
args = request[2]
2803
1898
kwargs = request[3]
2804
2805
parent_pipe.send(("data", getattr(client_object,
1899
1900
parent_pipe.send(('data', getattr(client_object,
2806
1901
funcname)(*args,
2807
**kwargs)))
2808
2809
if command == "getattr":
1902
**kwargs)))
1903
1904
if command == 'getattr':
2810
1905
attrname = request[1]
2811
if isinstance(client_object.__getattribute__(attrname),
2812
collections.abc.Callable):
2813
parent_pipe.send(("function", ))
1906
if callable(client_object.__getattribute__(attrname)):
1907
parent_pipe.send(('function',))
2814
1908
else:
2815
parent_pipe.send((
2816
"data", client_object.__getattribute__(attrname)))
2817
2818
if command == "setattr":
1909
parent_pipe.send(('data', client_object
1910
.__getattribute__(attrname)))
1911
1912
if command == 'setattr':
2819
1913
attrname = request[1]
2820
1914
value = request[2]
2821
1915
setattr(client_object, attrname, value)
2822
1916
2823
1917
return True
2824
1918
2825
1919
2826
def rfc3339_duration_to_delta(duration):
2827
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2828
2829
>>> timedelta = datetime.timedelta
2830
>>> rfc3339_duration_to_delta("P7D") == timedelta(7)
2831
True
2832
>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)
2833
True
2834
>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)
2835
True
2836
>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)
2837
True
2838
>>> rfc3339_duration_to_delta("P1W") == timedelta(7)
2839
True
2840
>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)
2841
True
2842
>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)
2843
True
2844
>>> del timedelta
2845
"""
2846
2847
# Parsing an RFC 3339 duration with regular expressions is not
2848
# possible - there would have to be multiple places for the same
2849
# values, like seconds. The current code, while more esoteric, is
2850
# cleaner without depending on a parsing library. If Python had a
2851
# built-in library for parsing we would use it, but we'd like to
2852
# avoid excessive use of external libraries.
2853
2854
# New type for defining tokens, syntax, and semantics all-in-one
2855
Token = collections.namedtuple("Token", (
2856
"regexp", # To match token; if "value" is not None, must have
2857
# a "group" containing digits
2858
"value", # datetime.timedelta or None
2859
"followers")) # Tokens valid after this token
2860
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2861
# the "duration" ABNF definition in RFC 3339, Appendix A.
2862
token_end = Token(re.compile(r"$"), None, frozenset())
2863
token_second = Token(re.compile(r"(\d+)S"),
2864
datetime.timedelta(seconds=1),
2865
frozenset((token_end, )))
2866
token_minute = Token(re.compile(r"(\d+)M"),
2867
datetime.timedelta(minutes=1),
2868
frozenset((token_second, token_end)))
2869
token_hour = Token(re.compile(r"(\d+)H"),
2870
datetime.timedelta(hours=1),
2871
frozenset((token_minute, token_end)))
2872
token_time = Token(re.compile(r"T"),
2873
None,
2874
frozenset((token_hour, token_minute,
2875
token_second)))
2876
token_day = Token(re.compile(r"(\d+)D"),
2877
datetime.timedelta(days=1),
2878
frozenset((token_time, token_end)))
2879
token_month = Token(re.compile(r"(\d+)M"),
2880
datetime.timedelta(weeks=4),
2881
frozenset((token_day, token_end)))
2882
token_year = Token(re.compile(r"(\d+)Y"),
2883
datetime.timedelta(weeks=52),
2884
frozenset((token_month, token_end)))
2885
token_week = Token(re.compile(r"(\d+)W"),
2886
datetime.timedelta(weeks=1),
2887
frozenset((token_end, )))
2888
token_duration = Token(re.compile(r"P"), None,
2889
frozenset((token_year, token_month,
2890
token_day, token_time,
2891
token_week)))
2892
# Define starting values:
2893
# Value so far
2894
value = datetime.timedelta()
2895
found_token = None
2896
# Following valid tokens
2897
followers = frozenset((token_duration, ))
2898
# String left to parse
2899
s = duration
2900
# Loop until end token is found
2901
while found_token is not token_end:
2902
# Search for any currently valid tokens
2903
for token in followers:
2904
match = token.regexp.match(s)
2905
if match is not None:
2906
# Token found
2907
if token.value is not None:
2908
# Value found, parse digits
2909
factor = int(match.group(1), 10)
2910
# Add to value so far
2911
value += factor * token.value
2912
# Strip token from string
2913
s = token.regexp.sub("", s, 1)
2914
# Go to found token
2915
found_token = token
2916
# Set valid next tokens
2917
followers = found_token.followers
2918
break
2919
else:
2920
# No currently valid tokens were found
2921
raise ValueError("Invalid RFC 3339 duration: {!r}"
2922
.format(duration))
2923
# End token found
2924
return value
2925
2926
2927
1920
def string_to_delta(interval):
2928
1921
"""Parse a string and return a datetime.timedelta
2929
2930
>>> string_to_delta("7d") == datetime.timedelta(7)
2931
True
2932
>>> string_to_delta("60s") == datetime.timedelta(0, 60)
2933
True
2934
>>> string_to_delta("60m") == datetime.timedelta(0, 3600)
2935
True
2936
>>> string_to_delta("24h") == datetime.timedelta(1)
2937
True
2938
>>> string_to_delta("1w") == datetime.timedelta(7)
2939
True
2940
>>> string_to_delta("5m 30s") == datetime.timedelta(0, 330)
2941
True
1922
1923
>>> string_to_delta('7d')
1924
datetime.timedelta(7)
1925
>>> string_to_delta('60s')
1926
datetime.timedelta(0, 60)
1927
>>> string_to_delta('60m')
1928
datetime.timedelta(0, 3600)
1929
>>> string_to_delta('24h')
1930
datetime.timedelta(1)
1931
>>> string_to_delta('1w')
1932
datetime.timedelta(7)
1933
>>> string_to_delta('5m 30s')
1934
datetime.timedelta(0, 330)
2942
1935
"""
2943
2944
try:
2945
return rfc3339_duration_to_delta(interval)
2946
except ValueError:
2947
pass
2948
2949
1936
timevalue = datetime.timedelta(0)
2950
1937
for s in interval.split():
2951
1938
try:
2952
suffix = s[-1]
1939
suffix = unicode(s[-1])
2953
1940
value = int(s[:-1])
2954
1941
if suffix == "d":
2955
1942
delta = datetime.timedelta(value)
2962
1949
elif suffix == "w":
2963
1950
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2964
1951
else:
2965
raise ValueError("Unknown suffix {!r}".format(suffix))
2966
except IndexError as e:
1952
raise ValueError("Unknown suffix %r" % suffix)
1953
except (ValueError, IndexError) as e:
2967
1954
raise ValueError(*(e.args))
2968
1955
timevalue += delta
2969
1956
return timevalue
2970
1957
2971
1958
2972
def daemon(nochdir=False, noclose=False):
1959
def daemon(nochdir = False, noclose = False):
2973
1960
"""See daemon(3). Standard BSD Unix function.
2974
1961
2975
1962
This should really exist as os.daemon, but it doesn't (yet)."""
2976
1963
if os.fork():
2977
1964
sys.exit()
2982
1969
sys.exit()
2983
1970
if not noclose:
2984
1971
# Close all standard open file descriptors
2985
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1972
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2986
1973
if not stat.S_ISCHR(os.fstat(null).st_mode):
2987
1974
raise OSError(errno.ENODEV,
2988
"{} not a character device"
2989
.format(os.devnull))
1975
"%s not a character device"
1976
% os.path.devnull)
2990
1977
os.dup2(null, sys.stdin.fileno())
2991
1978
os.dup2(null, sys.stdout.fileno())
2992
1979
os.dup2(null, sys.stderr.fileno())
2995
1982
2996
1983
2997
1984
def main():
2998
1985
2999
1986
##################################################################
3000
1987
# Parsing of options, both command line and config file
3001
1988
3002
1989
parser = argparse.ArgumentParser()
3003
1990
parser.add_argument("-v", "--version", action="version",
3004
version="%(prog)s {}".format(version),
1991
version = "%%(prog)s %s" % version,
3005
1992
help="show version number and exit")
3006
1993
parser.add_argument("-i", "--interface", metavar="IF",
3007
1994
help="Bind to interface IF")
3013
2000
help="Run self-test")
3014
2001
parser.add_argument("--debug", action="store_true",
3015
2002
help="Debug mode; run in foreground and log"
3016
" to terminal", default=None)
2003
" to terminal")
3017
2004
parser.add_argument("--debuglevel", metavar="LEVEL",
3018
2005
help="Debug level for stdout output")
3019
2006
parser.add_argument("--priority", help="GnuTLS"
3026
2013
" files")
3027
2014
parser.add_argument("--no-dbus", action="store_false",
3028
2015
dest="use_dbus", help="Do not provide D-Bus"
3029
" system bus interface", default=None)
2016
" system bus interface")
3030
2017
parser.add_argument("--no-ipv6", action="store_false",
3031
dest="use_ipv6", help="Do not use IPv6",
3032
default=None)
2018
dest="use_ipv6", help="Do not use IPv6")
3033
2019
parser.add_argument("--no-restore", action="store_false",
3034
2020
dest="restore", help="Do not restore stored"
3035
" state", default=None)
3036
parser.add_argument("--socket", type=int,
3037
help="Specify a file descriptor to a network"
3038
" socket to use instead of creating one")
2021
" state")
3039
2022
parser.add_argument("--statedir", metavar="DIR",
3040
2023
help="Directory to save/restore state in")
3041
parser.add_argument("--foreground", action="store_true",
3042
help="Run in foreground", default=None)
3043
parser.add_argument("--no-zeroconf", action="store_false",
3044
dest="zeroconf", help="Do not use Zeroconf",
3045
default=None)
3046
2024
3047
2025
options = parser.parse_args()
3048
2026
2027
if options.check:
2028
import doctest
2029
doctest.testmod()
2030
sys.exit()
2031
3049
2032
# Default values for config file for server-global settings
3050
if gnutls.has_rawpk:
3051
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3052
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3053
else:
3054
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3055
":+SIGN-DSA-SHA256")
3056
server_defaults = {"interface": "",
3057
"address": "",
3058
"port": "",
3059
"debug": "False",
3060
"priority": priority,
3061
"servicename": "Mandos",
3062
"use_dbus": "True",
3063
"use_ipv6": "True",
3064
"debuglevel": "",
3065
"restore": "True",
3066
"socket": "",
3067
"statedir": "/var/lib/mandos",
3068
"foreground": "False",
3069
"zeroconf": "True",
3070
}
3071
del priority
3072
2033
server_defaults = { "interface": "",
2034
"address": "",
2035
"port": "",
2036
"debug": "False",
2037
"priority":
2038
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2039
"servicename": "Mandos",
2040
"use_dbus": "True",
2041
"use_ipv6": "True",
2042
"debuglevel": "",
2043
"restore": "True",
2044
"statedir": "/var/lib/mandos"
2045
}
2046
3073
2047
# Parse config file for server-global settings
3074
server_config = configparser.ConfigParser(server_defaults)
2048
server_config = configparser.SafeConfigParser(server_defaults)
3075
2049
del server_defaults
3076
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3077
# Convert the ConfigParser object to a dict
2050
server_config.read(os.path.join(options.configdir,
2051
"mandos.conf"))
2052
# Convert the SafeConfigParser object to a dict
3078
2053
server_settings = server_config.defaults()
3079
2054
# Use the appropriate methods on the non-string config options
3080
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3081
"foreground", "zeroconf"):
2055
for option in ("debug", "use_dbus", "use_ipv6"):
3082
2056
server_settings[option] = server_config.getboolean("DEFAULT",
3083
2057
option)
3084
2058
if server_settings["port"]:
3085
2059
server_settings["port"] = server_config.getint("DEFAULT",
3086
2060
"port")
3087
if server_settings["socket"]:
3088
server_settings["socket"] = server_config.getint("DEFAULT",
3089
"socket")
3090
# Later, stdin will, and stdout and stderr might, be dup'ed
3091
# over with an opened os.devnull. But we don't want this to
3092
# happen with a supplied network socket.
3093
if 0 <= server_settings["socket"] <= 2:
3094
server_settings["socket"] = os.dup(server_settings
3095
["socket"])
3096
2061
del server_config
3097
2062
3098
2063
# Override the settings from the config file with command line
3099
2064
# options, if set.
3100
2065
for option in ("interface", "address", "port", "debug",
3101
"priority", "servicename", "configdir", "use_dbus",
3102
"use_ipv6", "debuglevel", "restore", "statedir",
3103
"socket", "foreground", "zeroconf"):
2066
"priority", "servicename", "configdir",
2067
"use_dbus", "use_ipv6", "debuglevel", "restore",
2068
"statedir"):
3104
2069
value = getattr(options, option)
3105
2070
if value is not None:
3106
2071
server_settings[option] = value
3107
2072
del options
3108
2073
# Force all strings to be unicode
3109
2074
for option in server_settings.keys():
3110
if isinstance(server_settings[option], bytes):
3111
server_settings[option] = (server_settings[option]
3112
.decode("utf-8"))
3113
# Force all boolean options to be boolean
3114
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3115
"foreground", "zeroconf"):
3116
server_settings[option] = bool(server_settings[option])
3117
# Debug implies foreground
3118
if server_settings["debug"]:
3119
server_settings["foreground"] = True
2075
if type(server_settings[option]) is str:
2076
server_settings[option] = unicode(server_settings[option])
3120
2077
# Now we have our good server settings in "server_settings"
3121
2078
3122
2079
##################################################################
3123
3124
if (not server_settings["zeroconf"]
3125
and not (server_settings["port"]
3126
or server_settings["socket"] != "")):
3127
parser.error("Needs port or socket to work without Zeroconf")
3128
2080
3129
2081
# For convenience
3130
2082
debug = server_settings["debug"]
3131
2083
debuglevel = server_settings["debuglevel"]
3133
2085
use_ipv6 = server_settings["use_ipv6"]
3134
2086
stored_state_path = os.path.join(server_settings["statedir"],
3135
2087
stored_state_file)
3136
foreground = server_settings["foreground"]
3137
zeroconf = server_settings["zeroconf"]
3138
2088
3139
2089
if debug:
3140
2090
initlogger(debug, logging.DEBUG)
3141
2091
else:
3144
2094
else:
3145
2095
level = getattr(logging, debuglevel.upper())
3146
2096
initlogger(debug, level)
3147
2097
3148
2098
if server_settings["servicename"] != "Mandos":
3149
syslogger.setFormatter(
3150
logging.Formatter("Mandos ({}) [%(process)d]:"
3151
" %(levelname)s: %(message)s".format(
3152
server_settings["servicename"])))
3153
2099
syslogger.setFormatter(logging.Formatter
2100
('Mandos (%s) [%%(process)d]:'
2101
' %%(levelname)s: %%(message)s'
2102
% server_settings["servicename"]))
2103
3154
2104
# Parse config file with clients
3155
client_config = configparser.ConfigParser(Client.client_defaults)
2105
client_config = configparser.SafeConfigParser(Client
2106
.client_defaults)
3156
2107
client_config.read(os.path.join(server_settings["configdir"],
3157
2108
"clients.conf"))
3158
2109
3159
2110
global mandos_dbus_service
3160
2111
mandos_dbus_service = None
3161
3162
socketfd = None
3163
if server_settings["socket"] != "":
3164
socketfd = server_settings["socket"]
3165
tcp_server = MandosServer(
3166
(server_settings["address"], server_settings["port"]),
3167
ClientHandler,
3168
interface=(server_settings["interface"] or None),
3169
use_ipv6=use_ipv6,
3170
gnutls_priority=server_settings["priority"],
3171
use_dbus=use_dbus,
3172
socketfd=socketfd)
3173
if not foreground:
3174
pidfilename = "/run/mandos.pid"
3175
if not os.path.isdir("/run/."):
3176
pidfilename = "/var/run/mandos.pid"
3177
pidfile = None
3178
try:
3179
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3180
except IOError as e:
3181
log.error("Could not open file %r", pidfilename,
3182
exc_info=e)
3183
3184
for name, group in (("_mandos", "_mandos"),
3185
("mandos", "mandos"),
3186
("nobody", "nogroup")):
3187
try:
3188
uid = pwd.getpwnam(name).pw_uid
3189
gid = pwd.getpwnam(group).pw_gid
3190
break
2112
2113
tcp_server = MandosServer((server_settings["address"],
2114
server_settings["port"]),
2115
ClientHandler,
2116
interface=(server_settings["interface"]
2117
or None),
2118
use_ipv6=use_ipv6,
2119
gnutls_priority=
2120
server_settings["priority"],
2121
use_dbus=use_dbus)
2122
if not debug:
2123
pidfilename = "/var/run/mandos.pid"
2124
try:
2125
pidfile = open(pidfilename, "w")
2126
except IOError:
2127
logger.error("Could not open file %r", pidfilename)
2128
2129
try:
2130
uid = pwd.getpwnam("_mandos").pw_uid
2131
gid = pwd.getpwnam("_mandos").pw_gid
2132
except KeyError:
2133
try:
2134
uid = pwd.getpwnam("mandos").pw_uid
2135
gid = pwd.getpwnam("mandos").pw_gid
3191
2136
except KeyError:
3192
continue
3193
else:
3194
uid = 65534
3195
gid = 65534
2137
try:
2138
uid = pwd.getpwnam("nobody").pw_uid
2139
gid = pwd.getpwnam("nobody").pw_gid
2140
except KeyError:
2141
uid = 65534
2142
gid = 65534
3196
2143
try:
3197
2144
os.setgid(gid)
3198
2145
os.setuid(uid)
3199
log.debug("Did setuid/setgid to %s:%s", uid, gid)
3200
2146
except OSError as error:
3201
log.warning("Failed to setuid/setgid to %s:%s: %s", uid, gid,
3202
os.strerror(error.errno))
3203
if error.errno != errno.EPERM:
3204
raise
3205
2147
if error[0] != errno.EPERM:
2148
raise error
2149
3206
2150
if debug:
3207
2151
# Enable all possible GnuTLS debugging
3208
2152
3209
2153
# "Use a log level over 10 to enable all debugging options."
3210
2154
# - GnuTLS manual
3211
gnutls.global_set_log_level(11)
3212
3213
@gnutls.log_func
2155
gnutls.library.functions.gnutls_global_set_log_level(11)
2156
2157
@gnutls.library.types.gnutls_log_func
3214
2158
def debug_gnutls(level, string):
3215
log.debug("GnuTLS: %s",
3216
string[:-1].decode("utf-8", errors="replace"))
3217
3218
gnutls.global_set_log_function(debug_gnutls)
3219
2159
logger.debug("GnuTLS: %s", string[:-1])
2160
2161
(gnutls.library.functions
2162
.gnutls_global_set_log_function(debug_gnutls))
2163
3220
2164
# Redirect stdin so all checkers get /dev/null
3221
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2165
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3222
2166
os.dup2(null, sys.stdin.fileno())
3223
2167
if null > 2:
3224
2168
os.close(null)
3225
2169
3226
2170
# Need to fork before connecting to D-Bus
3227
if not foreground:
2171
if not debug:
3228
2172
# Close all input and output, do double fork, etc.
3229
2173
daemon()
3230
3231
if gi.version_info < (3, 10, 2):
3232
# multiprocessing will use threads, so before we use GLib we
3233
# need to inform GLib that threads will be used.
3234
GLib.threads_init()
3235
2174
2175
gobject.threads_init()
2176
3236
2177
global main_loop
3237
2178
# From the Avahi example code
3238
DBusGMainLoop(set_as_default=True)
3239
main_loop = GLib.MainLoop()
2179
DBusGMainLoop(set_as_default=True )
2180
main_loop = gobject.MainLoop()
3240
2181
bus = dbus.SystemBus()
3241
2182
# End of Avahi example code
3242
2183
if use_dbus:
3243
2184
try:
3244
2185
bus_name = dbus.service.BusName("se.recompile.Mandos",
3245
bus,
3246
do_not_queue=True)
3247
old_bus_name = dbus.service.BusName(
3248
"se.bsnet.fukt.Mandos", bus,
3249
do_not_queue=True)
3250
except dbus.exceptions.DBusException as e:
3251
log.error("Disabling D-Bus:", exc_info=e)
2186
bus, do_not_queue=True)
2187
old_bus_name = (dbus.service.BusName
2188
("se.bsnet.fukt.Mandos", bus,
2189
do_not_queue=True))
2190
except dbus.exceptions.NameExistsException as e:
2191
logger.error(unicode(e) + ", disabling D-Bus")
3252
2192
use_dbus = False
3253
2193
server_settings["use_dbus"] = False
3254
2194
tcp_server.use_dbus = False
3255
if zeroconf:
3256
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3257
service = AvahiServiceToSyslog(
3258
name=server_settings["servicename"],
3259
servicetype="_mandos._tcp",
3260
protocol=protocol,
3261
bus=bus)
3262
if server_settings["interface"]:
3263
service.interface = if_nametoindex(
3264
server_settings["interface"].encode("utf-8"))
3265
2195
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2196
service = AvahiServiceToSyslog(name =
2197
server_settings["servicename"],
2198
servicetype = "_mandos._tcp",
2199
protocol = protocol, bus = bus)
2200
if server_settings["interface"]:
2201
service.interface = (if_nametoindex
2202
(str(server_settings["interface"])))
2203
3266
2204
global multiprocessing_manager
3267
2205
multiprocessing_manager = multiprocessing.Manager()
3268
2206
3269
2207
client_class = Client
3270
2208
if use_dbus:
3271
client_class = functools.partial(ClientDBus, bus=bus)
3272
2209
client_class = functools.partial(ClientDBusTransitional,
2210
bus = bus)
2211
3273
2212
client_settings = Client.config_parser(client_config)
3274
2213
old_client_settings = {}
3275
2214
clients_data = {}
3276
3277
# This is used to redirect stdout and stderr for checker processes
3278
global wnull
3279
wnull = open(os.devnull, "w") # A writable /dev/null
3280
# Only used if server is running in foreground but not in debug
3281
# mode
3282
if debug or not foreground:
3283
wnull.close()
3284
2215
3285
2216
# Get client data and settings from last running state.
3286
2217
if server_settings["restore"]:
3287
2218
try:
3288
2219
with open(stored_state_path, "rb") as stored_state:
3289
if sys.version_info.major == 2:
3290
clients_data, old_client_settings = pickle.load(
3291
stored_state)
3292
else:
3293
bytes_clients_data, bytes_old_client_settings = (
3294
pickle.load(stored_state, encoding="bytes"))
3295
# Fix bytes to strings
3296
# clients_data
3297
# .keys()
3298
clients_data = {(key.decode("utf-8")
3299
if isinstance(key, bytes)
3300
else key): value
3301
for key, value in
3302
bytes_clients_data.items()}
3303
del bytes_clients_data
3304
for key in clients_data:
3305
value = {(k.decode("utf-8")
3306
if isinstance(k, bytes) else k): v
3307
for k, v in
3308
clients_data[key].items()}
3309
clients_data[key] = value
3310
# .client_structure
3311
value["client_structure"] = [
3312
(s.decode("utf-8")
3313
if isinstance(s, bytes)
3314
else s) for s in
3315
value["client_structure"]]
3316
# .name, .host, and .checker_command
3317
for k in ("name", "host", "checker_command"):
3318
if isinstance(value[k], bytes):
3319
value[k] = value[k].decode("utf-8")
3320
if "key_id" not in value:
3321
value["key_id"] = ""
3322
elif "fingerprint" not in value:
3323
value["fingerprint"] = ""
3324
# old_client_settings
3325
# .keys()
3326
old_client_settings = {
3327
(key.decode("utf-8")
3328
if isinstance(key, bytes)
3329
else key): value
3330
for key, value in
3331
bytes_old_client_settings.items()}
3332
del bytes_old_client_settings
3333
# .host and .checker_command
3334
for value in old_client_settings.values():
3335
for attribute in ("host", "checker_command"):
3336
if isinstance(value[attribute], bytes):
3337
value[attribute] = (value[attribute]
3338
.decode("utf-8"))
2220
clients_data, old_client_settings = (pickle.load
2221
(stored_state))
3339
2222
os.remove(stored_state_path)
3340
2223
except IOError as e:
3341
if e.errno == errno.ENOENT:
3342
log.warning("Could not load persistent state:"
3343
" %s", os.strerror(e.errno))
3344
else:
3345
log.critical("Could not load persistent state:",
3346
exc_info=e)
2224
logger.warning("Could not load persistent state: {0}"
2225
.format(e))
2226
if e.errno != errno.ENOENT:
3347
2227
raise
3348
2228
except EOFError as e:
3349
log.warning("Could not load persistent state: EOFError:",
3350
exc_info=e)
3351
2229
logger.warning("Could not load persistent state: "
2230
"EOFError: {0}".format(e))
2231
3352
2232
with PGPEngine() as pgp:
3353
for client_name, client in clients_data.items():
3354
# Skip removed clients
3355
if client_name not in client_settings:
3356
continue
3357
2233
for client_name, client in clients_data.iteritems():
3358
2234
# Decide which value to use after restoring saved state.
3359
2235
# We have three different values: Old config file,
3360
2236
# new config file, and saved state.
3365
2241
# For each value in new config, check if it
3366
2242
# differs from the old config value (Except for
3367
2243
# the "secret" attribute)
3368
if (name != "secret"
3369
and (value !=
3370
old_client_settings[client_name][name])):
2244
if (name != "secret" and
2245
value != old_client_settings[client_name]
2246
[name]):
3371
2247
client[name] = value
3372
2248
except KeyError:
3373
2249
pass
3374
2250
3375
2251
# Clients who has passed its expire date can still be
3376
# enabled if its last checker was successful. A Client
3377
# whose checker succeeded before we stored its state is
3378
# assumed to have successfully run all checkers during
3379
# downtime.
2252
# enabled if its last checker was successful. Clients
2253
# whose checker failed before we stored its state is
2254
# assumed to have failed all checkers during downtime.
3380
2255
if client["enabled"]:
3381
2256
if datetime.datetime.utcnow() >= client["expires"]:
3382
2257
if not client["last_checked_ok"]:
3383
log.warning("disabling client %s - Client"
3384
" never performed a successful"
3385
" checker", client_name)
2258
logger.warning(
2259
"disabling client {0} - Client never "
2260
"performed a successfull checker"
2261
.format(client["name"]))
3386
2262
client["enabled"] = False
3387
2263
elif client["last_checker_status"] != 0:
3388
log.warning("disabling client %s - Client"
3389
" last checker failed with error"
3390
" code %s", client_name,
3391
client["last_checker_status"])
2264
logger.warning(
2265
"disabling client {0} - Client "
2266
"last checker failed with error code {1}"
2267
.format(client["name"],
2268
client["last_checker_status"]))
3392
2269
client["enabled"] = False
3393
2270
else:
3394
client["expires"] = (
3395
datetime.datetime.utcnow()
3396
+ client["timeout"])
3397
log.debug("Last checker succeeded, keeping %s"
3398
" enabled", client_name)
2271
client["expires"] = (datetime.datetime
2272
.utcnow()
2273
+ client["timeout"])
2274
logger.debug("Last checker succeeded,"
2275
" keeping {0} enabled"
2276
.format(client["name"]))
3399
2277
try:
3400
client["secret"] = pgp.decrypt(
3401
client["encrypted_secret"],
3402
client_settings[client_name]["secret"])
2278
client["secret"] = (
2279
pgp.decrypt(client["encrypted_secret"],
2280
client_settings[client_name]
2281
["secret"]))
3403
2282
except PGPError:
3404
2283
# If decryption fails, we use secret from new settings
3405
log.debug("Failed to decrypt %s old secret",
3406
client_name)
3407
client["secret"] = (client_settings[client_name]
3408
["secret"])
2284
logger.debug("Failed to decrypt {0} old secret"
2285
.format(client_name))
2286
client["secret"] = (
2287
client_settings[client_name]["secret"])
3409
2288
2289
3410
2290
# Add/remove clients based on new changes made to config
3411
2291
for client_name in (set(old_client_settings)
3412
2292
- set(client_settings)):
3415
2295
- set(old_client_settings)):
3416
2296
clients_data[client_name] = client_settings[client_name]
3417
2297
3418
# Create all client objects
3419
for client_name, client in clients_data.items():
2298
# Create clients all clients
2299
for client_name, client in clients_data.iteritems():
3420
2300
tcp_server.clients[client_name] = client_class(
3421
name=client_name,
3422
settings=client,
3423
server_settings=server_settings)
3424
2301
name = client_name, settings = client)
2302
3425
2303
if not tcp_server.clients:
3426
log.warning("No clients defined")
3427
3428
if not foreground:
3429
if pidfile is not None:
3430
pid = os.getpid()
3431
try:
3432
with pidfile:
3433
print(pid, file=pidfile)
3434
except IOError:
3435
log.error("Could not write to file %r with PID %d",
3436
pidfilename, pid)
3437
del pidfile
2304
logger.warning("No clients defined")
2305
2306
if not debug:
2307
try:
2308
with pidfile:
2309
pid = os.getpid()
2310
pidfile.write(str(pid) + "\n".encode("utf-8"))
2311
del pidfile
2312
except IOError:
2313
logger.error("Could not write to file %r with PID %d",
2314
pidfilename, pid)
2315
except NameError:
2316
# "pidfile" was never created
2317
pass
3438
2318
del pidfilename
3439
3440
for termsig in (signal.SIGHUP, signal.SIGTERM):
3441
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3442
lambda: main_loop.quit() and False)
3443
2319
signal.signal(signal.SIGINT, signal.SIG_IGN)
2320
2321
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2322
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2323
3444
2324
if use_dbus:
3445
3446
@alternate_dbus_interfaces(
3447
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3448
class MandosDBusService(DBusObjectWithObjectManager):
2325
class MandosDBusService(dbus.service.Object):
3449
2326
"""A D-Bus proxy object"""
3450
3451
2327
def __init__(self):
3452
2328
dbus.service.Object.__init__(self, bus, "/")
3453
3454
2329
_interface = "se.recompile.Mandos"
3455
2330
3456
2331
@dbus.service.signal(_interface, signature="o")
3457
2332
def ClientAdded(self, objpath):
3458
2333
"D-Bus signal"
3459
2334
pass
3460
2335
3461
2336
@dbus.service.signal(_interface, signature="ss")
3462
def ClientNotFound(self, key_id, address):
2337
def ClientNotFound(self, fingerprint, address):
3463
2338
"D-Bus signal"
3464
2339
pass
3465
3466
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3467
"true"})
2340
3468
2341
@dbus.service.signal(_interface, signature="os")
3469
2342
def ClientRemoved(self, objpath, name):
3470
2343
"D-Bus signal"
3471
2344
pass
3472
3473
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3474
"true"})
2345
3475
2346
@dbus.service.method(_interface, out_signature="ao")
3476
2347
def GetAllClients(self):
3477
2348
"D-Bus method"
3478
return dbus.Array(c.dbus_object_path for c in
3479
tcp_server.clients.values())
3480
3481
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3482
"true"})
2349
return dbus.Array(c.dbus_object_path
2350
for c in
2351
tcp_server.clients.itervalues())
2352
3483
2353
@dbus.service.method(_interface,
3484
2354
out_signature="a{oa{sv}}")
3485
2355
def GetAllClientsWithProperties(self):
3486
2356
"D-Bus method"
3487
2357
return dbus.Dictionary(
3488
{c.dbus_object_path: c.GetAll(
3489
"se.recompile.Mandos.Client")
3490
for c in tcp_server.clients.values()},
2358
((c.dbus_object_path, c.GetAll(""))
2359
for c in tcp_server.clients.itervalues()),
3491
2360
signature="oa{sv}")
3492
2361
3493
2362
@dbus.service.method(_interface, in_signature="o")
3494
2363
def RemoveClient(self, object_path):
3495
2364
"D-Bus method"
3496
for c in tcp_server.clients.values():
2365
for c in tcp_server.clients.itervalues():
3497
2366
if c.dbus_object_path == object_path:
3498
2367
del tcp_server.clients[c.name]
3499
2368
c.remove_from_connection()
3500
# Don't signal the disabling
2369
# Don't signal anything except ClientRemoved
3501
2370
c.disable(quiet=True)
3502
# Emit D-Bus signal for removal
3503
self.client_removed_signal(c)
2371
# Emit D-Bus signal
2372
self.ClientRemoved(object_path, c.name)
3504
2373
return
3505
2374
raise KeyError(object_path)
3506
2375
3507
2376
del _interface
3508
3509
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3510
out_signature="a{oa{sa{sv}}}")
3511
def GetManagedObjects(self):
3512
"""D-Bus method"""
3513
return dbus.Dictionary(
3514
{client.dbus_object_path:
3515
dbus.Dictionary(
3516
{interface: client.GetAll(interface)
3517
for interface in
3518
client._get_all_interface_names()})
3519
for client in tcp_server.clients.values()})
3520
3521
def client_added_signal(self, client):
3522
"""Send the new standard signal and the old signal"""
3523
if use_dbus:
3524
# New standard signal
3525
self.InterfacesAdded(
3526
client.dbus_object_path,
3527
dbus.Dictionary(
3528
{interface: client.GetAll(interface)
3529
for interface in
3530
client._get_all_interface_names()}))
3531
# Old signal
3532
self.ClientAdded(client.dbus_object_path)
3533
3534
def client_removed_signal(self, client):
3535
"""Send the new standard signal and the old signal"""
3536
if use_dbus:
3537
# New standard signal
3538
self.InterfacesRemoved(
3539
client.dbus_object_path,
3540
client._get_all_interface_names())
3541
# Old signal
3542
self.ClientRemoved(client.dbus_object_path,
3543
client.name)
3544
3545
mandos_dbus_service = MandosDBusService()
3546
3547
# Save modules to variables to exempt the modules from being
3548
# unloaded before the function registered with atexit() is run.
3549
mp = multiprocessing
3550
wn = wnull
3551
2377
2378
class MandosDBusServiceTransitional(MandosDBusService):
2379
__metaclass__ = AlternateDBusNamesMetaclass
2380
mandos_dbus_service = MandosDBusServiceTransitional()
2381
3552
2382
def cleanup():
3553
2383
"Cleanup function; run on exit"
3554
if zeroconf:
3555
service.cleanup()
3556
3557
mp.active_children()
3558
wn.close()
2384
service.cleanup()
2385
2386
multiprocessing.active_children()
3559
2387
if not (tcp_server.clients or client_settings):
3560
2388
return
3561
2389
3562
2390
# Store client before exiting. Secrets are encrypted with key
3563
2391
# based on what config file has. If config file is
3564
2392
# removed/edited, old secret will thus be unrecovable.
3565
2393
clients = {}
3566
2394
with PGPEngine() as pgp:
3567
for client in tcp_server.clients.values():
2395
for client in tcp_server.clients.itervalues():
3568
2396
key = client_settings[client.name]["secret"]
3569
2397
client.encrypted_secret = pgp.encrypt(client.secret,
3570
2398
key)
3571
2399
client_dict = {}
3572
2400
3573
2401
# A list of attributes that can not be pickled
3574
2402
# + secret.
3575
exclude = {"bus", "changedstate", "secret",
3576
"checker", "server_settings"}
3577
for name, typ in inspect.getmembers(dbus.service
3578
.Object):
2403
exclude = set(("bus", "changedstate", "secret",
2404
"checker"))
2405
for name, typ in (inspect.getmembers
2406
(dbus.service.Object)):
3579
2407
exclude.add(name)
3580
2408
3581
2409
client_dict["encrypted_secret"] = (client
3582
2410
.encrypted_secret)
3583
2411
for attr in client.client_structure:
3584
2412
if attr not in exclude:
3585
2413
client_dict[attr] = getattr(client, attr)
3586
2414
3587
2415
clients[client.name] = client_dict
3588
2416
del client_settings[client.name]["secret"]
3589
2417
3590
2418
try:
3591
with tempfile.NamedTemporaryFile(
3592
mode="wb",
3593
suffix=".pickle",
3594
prefix="clients-",
3595
dir=os.path.dirname(stored_state_path),
3596
delete=False) as stored_state:
3597
pickle.dump((clients, client_settings), stored_state,
3598
protocol=2)
3599
tempname = stored_state.name
2419
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2420
prefix="clients-",
2421
dir=os.path.dirname
2422
(stored_state_path))
2423
with os.fdopen(tempfd, "wb") as stored_state:
2424
pickle.dump((clients, client_settings), stored_state)
3600
2425
os.rename(tempname, stored_state_path)
3601
2426
except (IOError, OSError) as e:
2427
logger.warning("Could not save persistent state: {0}"
2428
.format(e))
3602
2429
if not debug:
3603
2430
try:
3604
2431
os.remove(tempname)
3605
2432
except NameError:
3606
2433
pass
3607
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3608
log.warning("Could not save persistent state: %s",
3609
os.strerror(e.errno))
3610
else:
3611
log.warning("Could not save persistent state:",
3612
exc_info=e)
3613
raise
3614
2434
if e.errno not in set((errno.ENOENT, errno.EACCES,
2435
errno.EEXIST)):
2436
raise e
2437
3615
2438
# Delete all clients, and settings from config
3616
2439
while tcp_server.clients:
3617
2440
name, client = tcp_server.clients.popitem()
3618
2441
if use_dbus:
3619
2442
client.remove_from_connection()
3620
# Don't signal the disabling
2443
# Don't signal anything except ClientRemoved
3621
2444
client.disable(quiet=True)
3622
# Emit D-Bus signal for removal
3623
2445
if use_dbus:
3624
mandos_dbus_service.client_removed_signal(client)
2446
# Emit D-Bus signal
2447
mandos_dbus_service.ClientRemoved(client
2448
.dbus_object_path,
2449
client.name)
3625
2450
client_settings.clear()
3626
2451
3627
2452
atexit.register(cleanup)
3628
3629
for client in tcp_server.clients.values():
2453
2454
for client in tcp_server.clients.itervalues():
3630
2455
if use_dbus:
3631
# Emit D-Bus signal for adding
3632
mandos_dbus_service.client_added_signal(client)
2456
# Emit D-Bus signal
2457
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3633
2458
# Need to initiate checking of clients
3634
2459
if client.enabled:
3635
client.init_checker(randomize_start=True)
3636
2460
client.init_checker()
2461
3637
2462
tcp_server.enable()
3638
2463
tcp_server.server_activate()
3639
2464
3640
2465
# Find out what port we got
3641
if zeroconf:
3642
service.port = tcp_server.socket.getsockname()[1]
2466
service.port = tcp_server.socket.getsockname()[1]
3643
2467
if use_ipv6:
3644
log.info("Now listening on address %r, port %d, flowinfo %d,"
3645
" scope_id %d", *tcp_server.socket.getsockname())
2468
logger.info("Now listening on address %r, port %d,"
2469
" flowinfo %d, scope_id %d"
2470
% tcp_server.socket.getsockname())
3646
2471
else: # IPv4
3647
log.info("Now listening on address %r, port %d",
3648
*tcp_server.socket.getsockname())
3649
3650
# service.interface = tcp_server.socket.getsockname()[3]
3651
2472
logger.info("Now listening on address %r, port %d"
2473
% tcp_server.socket.getsockname())
2474
2475
#service.interface = tcp_server.socket.getsockname()[3]
2476
3652
2477
try:
3653
if zeroconf:
3654
# From the Avahi example code
3655
try:
3656
service.activate()
3657
except dbus.exceptions.DBusException as error:
3658
log.critical("D-Bus Exception", exc_info=error)
3659
cleanup()
3660
sys.exit(1)
3661
# End of Avahi example code
3662
3663
GLib.io_add_watch(
3664
GLib.IOChannel.unix_new(tcp_server.fileno()),
3665
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3666
lambda *args, **kwargs: (tcp_server.handle_request
3667
(*args[2:], **kwargs) or True))
3668
3669
log.debug("Starting main loop")
2478
# From the Avahi example code
2479
try:
2480
service.activate()
2481
except dbus.exceptions.DBusException as error:
2482
logger.critical("DBusException: %s", error)
2483
cleanup()
2484
sys.exit(1)
2485
# End of Avahi example code
2486
2487
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2488
lambda *args, **kwargs:
2489
(tcp_server.handle_request
2490
(*args[2:], **kwargs) or True))
2491
2492
logger.debug("Starting main loop")
3670
2493
main_loop.run()
3671
2494
except AvahiError as error:
3672
log.critical("Avahi Error", exc_info=error)
2495
logger.critical("AvahiError: %s", error)
3673
2496
cleanup()
3674
2497
sys.exit(1)
3675
2498
except KeyboardInterrupt:
3676
2499
if debug:
3677
2500
print("", file=sys.stderr)
3678
log.debug("Server received KeyboardInterrupt")
3679
log.debug("Server exiting")
2501
logger.debug("Server received KeyboardInterrupt")
2502
logger.debug("Server exiting")
3680
2503
# Must run before the D-Bus bus name gets deregistered
3681
2504
cleanup()
3682
2505
3683
3684
def parse_test_args():
3685
# type: () -> argparse.Namespace
3686
parser = argparse.ArgumentParser(add_help=False)
3687
parser.add_argument("--check", action="store_true")
3688
parser.add_argument("--prefix", )
3689
args, unknown_args = parser.parse_known_args()
3690
if args.check:
3691
# Remove test options from sys.argv
3692
sys.argv[1:] = unknown_args
3693
return args
3694
3695
# Add all tests from doctest strings
3696
def load_tests(loader, tests, none):
3697
import doctest
3698
tests.addTests(doctest.DocTestSuite())
3699
return tests
3700
3701
if __name__ == "__main__":
3702
options = parse_test_args()
3703
try:
3704
if options.check:
3705
extra_test_prefix = options.prefix
3706
if extra_test_prefix is not None:
3707
if not (unittest.main(argv=[""], exit=False)
3708
.result.wasSuccessful()):
3709
sys.exit(1)
3710
class ExtraTestLoader(unittest.TestLoader):
3711
testMethodPrefix = extra_test_prefix
3712
# Call using ./scriptname --test [--verbose]
3713
unittest.main(argv=[""], testLoader=ExtraTestLoader())
3714
else:
3715
unittest.main(argv=[""])
3716
else:
3717
main()
3718
finally:
3719
logging.shutdown()
3720
3721
# Local Variables:
3722
# run-tests:
3723
# (lambda (&optional extra)
3724
# (if (not (funcall run-tests-in-test-buffer default-directory
3725
# extra))
3726
# (funcall show-test-buffer-in-test-window)
3727
# (funcall remove-test-window)
3728
# (if extra (message "Extra tests run successfully!"))))
3729
# run-tests-in-test-buffer:
3730
# (lambda (dir &optional extra)
3731
# (with-current-buffer (get-buffer-create "*Test*")
3732
# (setq buffer-read-only nil
3733
# default-directory dir)
3734
# (erase-buffer)
3735
# (compilation-mode))
3736
# (let ((process-result
3737
# (let ((inhibit-read-only t))
3738
# (process-file-shell-command
3739
# (funcall get-command-line extra) nil "*Test*"))))
3740
# (and (numberp process-result)
3741
# (= process-result 0))))
3742
# get-command-line:
3743
# (lambda (&optional extra)
3744
# (let ((quoted-script
3745
# (shell-quote-argument (funcall get-script-name))))
3746
# (format
3747
# (concat "%s --check" (if extra " --prefix=atest" ""))
3748
# quoted-script)))
3749
# get-script-name:
3750
# (lambda ()
3751
# (if (fboundp 'file-local-name)
3752
# (file-local-name (buffer-file-name))
3753
# (or (file-remote-p (buffer-file-name) 'localname)
3754
# (buffer-file-name))))
3755
# remove-test-window:
3756
# (lambda ()
3757
# (let ((test-window (get-buffer-window "*Test*")))
3758
# (if test-window (delete-window test-window))))
3759
# show-test-buffer-in-test-window:
3760
# (lambda ()
3761
# (when (not (get-buffer-window-list "*Test*"))
3762
# (setq next-error-last-buffer (get-buffer "*Test*"))
3763
# (let* ((side (if (>= (window-width) 146) 'right 'bottom))
3764
# (display-buffer-overriding-action
3765
# `((display-buffer-in-side-window) (side . ,side)
3766
# (window-height . fit-window-to-buffer)
3767
# (window-width . fit-window-to-buffer))))
3768
# (display-buffer "*Test*"))))
3769
# eval:
3770
# (progn
3771
# (let* ((run-extra-tests (lambda () (interactive)
3772
# (funcall run-tests t)))
3773
# (inner-keymap `(keymap (116 . ,run-extra-tests))) ; t
3774
# (outer-keymap `(keymap (3 . ,inner-keymap)))) ; C-c
3775
# (setq minor-mode-overriding-map-alist
3776
# (cons `(run-tests . ,outer-keymap)
3777
# minor-mode-overriding-map-alist)))
3778
# (add-hook 'after-save-hook run-tests 90 t))
3779
# End:
2506
if __name__ == '__main__':
2507
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0