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- Committer: Teddy Hogeborn
- Date: 2021-02-03 23:10:42 UTC
- Revision ID: teddy@recompile.se-20210203231042-2z3egrvpo1zt7nej
mandos-ctl: Fix bad test for command.Remove and related minor issues
The test for command.Remove removes all clients from the spy server,
and then loops over all clients, looking for the corresponding Remove
command as recorded by the spy server. But since since there aren't
any clients left after they were removed, no assertions are made, and
the test therefore does nothing. Fix this.
In tests for command.Approve and command.Deny, add checks that clients
were not somehow removed by the command (in which case, likewise, no
assertions are made).
Add related checks to TestPropertySetterCmd.runTest; i.e. test that a
sequence is not empty before looping over it and making assertions.
* mandos-ctl (TestBaseCommands.test_Remove): Save a copy of the
original "clients" dict, and loop over those instead. Add assertion
that all clients were indeed removed. Also fix the code which looks
for the Remove command, which now needs to actually work.
(TestBaseCommands.test_Approve, TestBaseCommands.test_Deny): Add
assertion that there are still clients before looping over them.
(TestPropertySetterCmd.runTest): Add assertion that the list of
values to get is not empty before looping over them. Also add check
that there are still clients before looping over clients.
The test for command.Remove removes all clients from the spy server,
and then loops over all clients, looking for the corresponding Remove
command as recorded by the spy server. But since since there aren't
any clients left after they were removed, no assertions are made, and
the test therefore does nothing. Fix this.
In tests for command.Approve and command.Deny, add checks that clients
were not somehow removed by the command (in which case, likewise, no
assertions are made).
Add related checks to TestPropertySetterCmd.runTest; i.e. test that a
sequence is not empty before looping over it and making assertions.
* mandos-ctl (TestBaseCommands.test_Remove): Save a copy of the
original "clients" dict, and loop over those instead. Add assertion
that all clients were indeed removed. Also fix the code which looks
for the Remove command, which now needs to actually work.
(TestBaseCommands.test_Approve, TestBaseCommands.test_Deny): Add
assertion that there are still clients before looping over them.
(TestPropertySetterCmd.runTest): Add assertion that the list of
values to get is not empty before looping over them. Also add check
that there are still clients before looping over clients.
- files added:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- network-hooks.d
- plugin-helpers
- files removed:
- initramfs-tools-hook-conf
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python
2
# -*- mode: python; coding: utf-8 -*-
3
#
1
#!/usr/bin/python3 -bI
2
# -*- mode: python; after-save-hook: (lambda () (let ((command (if (fboundp 'file-local-name) (file-local-name (buffer-file-name)) (or (file-remote-p (buffer-file-name) 'localname) (buffer-file-name))))) (if (= (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (format "%s --check" (shell-quote-argument command)) nil "*Test*")) 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w))) (progn (with-current-buffer "*Test*" (compilation-mode)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); coding: utf-8 -*-
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2020 Teddy Hogeborn
15
# Copyright © 2008-2020 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
31
32
# Contact the authors at <mandos@recompile.se>.
32
#
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
import SocketServer as socketserver
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
38
47
import socket
39
48
import argparse
40
49
import datetime
41
50
import errno
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
49
55
import sys
50
56
import re
51
57
import os
60
66
import struct
61
67
import fcntl
62
68
import functools
63
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
64
73
import multiprocessing
65
74
import types
66
75
import binascii
67
76
import tempfile
77
import itertools
78
import collections
79
import codecs
80
import unittest
81
import random
82
import shlex
68
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69
84
import dbus
70
85
import dbus.service
71
import gobject
72
import avahi
86
import gi
87
from gi.repository import GLib
73
88
from dbus.mainloop.glib import DBusGMainLoop
74
89
import ctypes
75
90
import ctypes.util
76
91
import xml.dom.minidom
77
92
import inspect
78
import GnuPGInterface
79
80
try:
93
94
if sys.version_info.major == 2:
95
__metaclass__ = type
96
str = unicode
97
98
# Add collections.abc.Callable if it does not exist
99
try:
100
collections.abc.Callable
101
except AttributeError:
102
class abc:
103
Callable = collections.Callable
104
collections.abc = abc
105
del abc
106
107
# Add shlex.quote if it does not exist
108
try:
109
shlex.quote
110
except AttributeError:
111
shlex.quote = re.escape
112
113
# Show warnings by default
114
if not sys.warnoptions:
115
import warnings
116
warnings.simplefilter("default")
117
118
# Try to find the value of SO_BINDTODEVICE:
119
try:
120
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
121
# newer, and it is also the most natural place for it:
81
122
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
82
123
except AttributeError:
83
124
try:
125
# This is where SO_BINDTODEVICE was up to and including Python
126
# 2.6, and also 3.2:
84
127
from IN import SO_BINDTODEVICE
85
128
except ImportError:
86
SO_BINDTODEVICE = None
87
88
89
version = "1.4.1"
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 = "1.8.14"
90
147
stored_state_file = "clients.pickle"
91
148
92
149
logger = logging.getLogger()
93
syslogger = (logging.handlers.SysLogHandler
94
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
95
address = str("/dev/log")))
150
logging.captureWarnings(True) # Show warnings via the logging system
151
syslogger = None
96
152
97
153
try:
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
100
.if_nametoindex)
154
if_nametoindex = ctypes.cdll.LoadLibrary(
155
ctypes.util.find_library("c")).if_nametoindex
101
156
except (OSError, AttributeError):
157
102
158
def if_nametoindex(interface):
103
159
"Get an interface index the hard way, i.e. using fcntl()"
104
160
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
105
161
with contextlib.closing(socket.socket()) as s:
106
162
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
107
struct.pack(str("16s16x"),
108
interface))
109
interface_index = struct.unpack(str("I"),
110
ifreq[16:20])[0]
163
struct.pack(b"16s16x", interface))
164
interface_index = struct.unpack("I", ifreq[16:20])[0]
111
165
return interface_index
112
166
113
167
114
def initlogger(level=logging.WARNING):
168
def copy_function(func):
169
"""Make a copy of a function"""
170
if sys.version_info.major == 2:
171
return types.FunctionType(func.func_code,
172
func.func_globals,
173
func.func_name,
174
func.func_defaults,
175
func.func_closure)
176
else:
177
return types.FunctionType(func.__code__,
178
func.__globals__,
179
func.__name__,
180
func.__defaults__,
181
func.__closure__)
182
183
184
def initlogger(debug, level=logging.WARNING):
115
185
"""init logger and add loglevel"""
116
186
187
global syslogger
188
syslogger = (logging.handlers.SysLogHandler(
189
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
190
address="/dev/log"))
117
191
syslogger.setFormatter(logging.Formatter
118
192
('Mandos [%(process)d]: %(levelname)s:'
119
193
' %(message)s'))
120
194
logger.addHandler(syslogger)
121
122
console = logging.StreamHandler()
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
124
' [%(process)d]:'
125
' %(levelname)s:'
126
' %(message)s'))
127
logger.addHandler(console)
195
196
if debug:
197
console = logging.StreamHandler()
198
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
199
' [%(process)d]:'
200
' %(levelname)s:'
201
' %(message)s'))
202
logger.addHandler(console)
128
203
logger.setLevel(level)
129
204
130
205
131
class CryptoError(Exception):
206
class PGPError(Exception):
207
"""Exception if encryption/decryption fails"""
132
208
pass
133
209
134
210
135
class Crypto(object):
211
class PGPEngine:
136
212
"""A simple class for OpenPGP symmetric encryption & decryption"""
213
137
214
def __init__(self):
138
self.gnupg = GnuPGInterface.GnuPG()
139
215
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
140
self.gnupg = GnuPGInterface.GnuPG()
141
self.gnupg.options.meta_interactive = False
142
self.gnupg.options.homedir = self.tempdir
143
self.gnupg.options.extra_args.extend(['--force-mdc',
144
'--quiet'])
145
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
146
235
def __enter__(self):
147
236
return self
148
149
def __exit__ (self, exc_type, exc_value, traceback):
237
238
def __exit__(self, exc_type, exc_value, traceback):
150
239
self._cleanup()
151
240
return False
152
241
153
242
def __del__(self):
154
243
self._cleanup()
155
244
156
245
def _cleanup(self):
157
246
if self.tempdir is not None:
158
247
# Delete contents of tempdir
159
248
for root, dirs, files in os.walk(self.tempdir,
160
topdown = False):
249
topdown=False):
161
250
for filename in files:
162
251
os.remove(os.path.join(root, filename))
163
252
for dirname in dirs:
165
254
# Remove tempdir
166
255
os.rmdir(self.tempdir)
167
256
self.tempdir = None
168
257
169
258
def password_encode(self, password):
170
259
# Passphrase can not be empty and can not contain newlines or
171
260
# NUL bytes. So we prefix it and hex encode it.
172
return b"mandos" + binascii.hexlify(password)
173
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
269
def encrypt(self, data, password):
175
self.gnupg.passphrase = self.password_encode(password)
176
with open(os.devnull) as devnull:
177
try:
178
proc = self.gnupg.run(['--symmetric'],
179
create_fhs=['stdin', 'stdout'],
180
attach_fhs={'stderr': devnull})
181
with contextlib.closing(proc.handles['stdin']) as f:
182
f.write(data)
183
with contextlib.closing(proc.handles['stdout']) as f:
184
ciphertext = f.read()
185
proc.wait()
186
except IOError as e:
187
raise CryptoError(e)
188
self.gnupg.passphrase = None
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)
189
285
return ciphertext
190
286
191
287
def decrypt(self, data, password):
192
self.gnupg.passphrase = self.password_encode(password)
193
with open(os.devnull) as devnull:
194
try:
195
proc = self.gnupg.run(['--decrypt'],
196
create_fhs=['stdin', 'stdout'],
197
attach_fhs={'stderr': devnull})
198
with contextlib.closing(proc.handles['stdin'] ) as f:
199
f.write(data)
200
with contextlib.closing(proc.handles['stdout']) as f:
201
decrypted_plaintext = f.read()
202
proc.wait()
203
except IOError as e:
204
raise CryptoError(e)
205
self.gnupg.passphrase = None
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)
206
303
return decrypted_plaintext
207
304
208
305
306
# Pretend that we have an Avahi module
307
class avahi:
308
"""This isn't so much a class as it is a module-like namespace."""
309
IF_UNSPEC = -1 # avahi-common/address.h
310
PROTO_UNSPEC = -1 # avahi-common/address.h
311
PROTO_INET = 0 # avahi-common/address.h
312
PROTO_INET6 = 1 # avahi-common/address.h
313
DBUS_NAME = "org.freedesktop.Avahi"
314
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
315
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
316
DBUS_PATH_SERVER = "/"
317
318
@staticmethod
319
def string_array_to_txt_array(t):
320
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
321
for s in t), signature="ay")
322
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
323
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
324
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
325
SERVER_INVALID = 0 # avahi-common/defs.h
326
SERVER_REGISTERING = 1 # avahi-common/defs.h
327
SERVER_RUNNING = 2 # avahi-common/defs.h
328
SERVER_COLLISION = 3 # avahi-common/defs.h
329
SERVER_FAILURE = 4 # avahi-common/defs.h
330
209
331
210
332
class AvahiError(Exception):
211
333
def __init__(self, value, *args, **kwargs):
212
334
self.value = value
213
super(AvahiError, self).__init__(value, *args, **kwargs)
214
def __unicode__(self):
215
return unicode(repr(self.value))
335
return super(AvahiError, self).__init__(value, *args,
336
**kwargs)
337
216
338
217
339
class AvahiServiceError(AvahiError):
218
340
pass
219
341
342
220
343
class AvahiGroupError(AvahiError):
221
344
pass
222
345
223
346
224
class AvahiService(object):
347
class AvahiService:
225
348
"""An Avahi (Zeroconf) service.
226
349
227
350
Attributes:
228
351
interface: integer; avahi.IF_UNSPEC or an interface index.
229
352
Used to optionally bind to the specified interface.
230
353
name: string; Example: 'Mandos'
231
354
type: string; Example: '_mandos._tcp'.
232
See <http://www.dns-sd.org/ServiceTypes.html>
355
See <https://www.iana.org/assignments/service-names-port-numbers>
233
356
port: integer; what port to announce
234
357
TXT: list of strings; TXT record for the service
235
358
domain: string; Domain to publish on, default to .local if empty.
241
364
server: D-Bus Server
242
365
bus: dbus.SystemBus()
243
366
"""
244
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
245
servicetype = None, port = None, TXT = None,
246
domain = "", host = "", max_renames = 32768,
247
protocol = avahi.PROTO_UNSPEC, bus = None):
367
368
def __init__(self,
369
interface=avahi.IF_UNSPEC,
370
name=None,
371
servicetype=None,
372
port=None,
373
TXT=None,
374
domain="",
375
host="",
376
max_renames=32768,
377
protocol=avahi.PROTO_UNSPEC,
378
bus=None):
248
379
self.interface = interface
249
380
self.name = name
250
381
self.type = servicetype
259
390
self.server = None
260
391
self.bus = bus
261
392
self.entry_group_state_changed_match = None
262
def rename(self):
393
394
def rename(self, remove=True):
263
395
"""Derived from the Avahi example code"""
264
396
if self.rename_count >= self.max_renames:
265
397
logger.critical("No suitable Zeroconf service name found"
266
398
" after %i retries, exiting.",
267
399
self.rename_count)
268
400
raise AvahiServiceError("Too many renames")
269
self.name = unicode(self.server
270
.GetAlternativeServiceName(self.name))
401
self.name = str(
402
self.server.GetAlternativeServiceName(self.name))
403
self.rename_count += 1
271
404
logger.info("Changing Zeroconf service name to %r ...",
272
405
self.name)
273
self.remove()
406
if remove:
407
self.remove()
274
408
try:
275
409
self.add()
276
410
except dbus.exceptions.DBusException as error:
277
logger.critical("DBusException: %s", error)
278
self.cleanup()
279
os._exit(1)
280
self.rename_count += 1
411
if (error.get_dbus_name()
412
== "org.freedesktop.Avahi.CollisionError"):
413
logger.info("Local Zeroconf service name collision.")
414
return self.rename(remove=False)
415
else:
416
logger.critical("D-Bus Exception", exc_info=error)
417
self.cleanup()
418
os._exit(1)
419
281
420
def remove(self):
282
421
"""Derived from the Avahi example code"""
283
422
if self.entry_group_state_changed_match is not None:
285
424
self.entry_group_state_changed_match = None
286
425
if self.group is not None:
287
426
self.group.Reset()
427
288
428
def add(self):
289
429
"""Derived from the Avahi example code"""
290
430
self.remove()
307
447
dbus.UInt16(self.port),
308
448
avahi.string_array_to_txt_array(self.TXT))
309
449
self.group.Commit()
450
310
451
def entry_group_state_changed(self, state, error):
311
452
"""Derived from the Avahi example code"""
312
453
logger.debug("Avahi entry group state change: %i", state)
313
454
314
455
if state == avahi.ENTRY_GROUP_ESTABLISHED:
315
456
logger.debug("Zeroconf service established.")
316
457
elif state == avahi.ENTRY_GROUP_COLLISION:
318
459
self.rename()
319
460
elif state == avahi.ENTRY_GROUP_FAILURE:
320
461
logger.critical("Avahi: Error in group state changed %s",
321
unicode(error))
322
raise AvahiGroupError("State changed: %s"
323
% unicode(error))
462
str(error))
463
raise AvahiGroupError("State changed: {!s}".format(error))
464
324
465
def cleanup(self):
325
466
"""Derived from the Avahi example code"""
326
467
if self.group is not None:
331
472
pass
332
473
self.group = None
333
474
self.remove()
475
334
476
def server_state_changed(self, state, error=None):
335
477
"""Derived from the Avahi example code"""
336
478
logger.debug("Avahi server state change: %i", state)
337
bad_states = { avahi.SERVER_INVALID:
338
"Zeroconf server invalid",
339
avahi.SERVER_REGISTERING: None,
340
avahi.SERVER_COLLISION:
341
"Zeroconf server name collision",
342
avahi.SERVER_FAILURE:
343
"Zeroconf server failure" }
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
}
344
485
if state in bad_states:
345
486
if bad_states[state] is not None:
346
487
if error is None:
349
490
logger.error(bad_states[state] + ": %r", error)
350
491
self.cleanup()
351
492
elif state == avahi.SERVER_RUNNING:
352
self.add()
493
try:
494
self.add()
495
except dbus.exceptions.DBusException as error:
496
if (error.get_dbus_name()
497
== "org.freedesktop.Avahi.CollisionError"):
498
logger.info("Local Zeroconf service name"
499
" collision.")
500
return self.rename(remove=False)
501
else:
502
logger.critical("D-Bus Exception", exc_info=error)
503
self.cleanup()
504
os._exit(1)
353
505
else:
354
506
if error is None:
355
507
logger.debug("Unknown state: %r", state)
356
508
else:
357
509
logger.debug("Unknown state: %r: %r", state, error)
510
358
511
def activate(self):
359
512
"""Derived from the Avahi example code"""
360
513
if self.server is None:
364
517
follow_name_owner_changes=True),
365
518
avahi.DBUS_INTERFACE_SERVER)
366
519
self.server.connect_to_signal("StateChanged",
367
self.server_state_changed)
520
self.server_state_changed)
368
521
self.server_state_changed(self.server.GetState())
369
522
523
370
524
class AvahiServiceToSyslog(AvahiService):
371
def rename(self):
525
def rename(self, *args, **kwargs):
372
526
"""Add the new name to the syslog messages"""
373
ret = AvahiService.rename(self)
374
syslogger.setFormatter(logging.Formatter
375
('Mandos (%s) [%%(process)d]:'
376
' %%(levelname)s: %%(message)s'
377
% self.name))
527
ret = super(AvahiServiceToSyslog, self).rename(*args,
528
**kwargs)
529
syslogger.setFormatter(logging.Formatter(
530
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
531
.format(self.name)))
378
532
return ret
379
533
380
def timedelta_to_milliseconds(td):
381
"Convert a datetime.timedelta() to milliseconds"
382
return ((td.days * 24 * 60 * 60 * 1000)
383
+ (td.seconds * 1000)
384
+ (td.microseconds // 1000))
385
386
class Client(object):
534
535
# Pretend that we have a GnuTLS module
536
class gnutls:
537
"""This isn't so much a class as it is a module-like namespace."""
538
539
library = ctypes.util.find_library("gnutls")
540
if library is None:
541
library = ctypes.util.find_library("gnutls-deb0")
542
_library = ctypes.cdll.LoadLibrary(library)
543
del library
544
545
# Unless otherwise indicated, the constants and types below are
546
# all from the gnutls/gnutls.h C header file.
547
548
# Constants
549
E_SUCCESS = 0
550
E_INTERRUPTED = -52
551
E_AGAIN = -28
552
CRT_OPENPGP = 2
553
CRT_RAWPK = 3
554
CLIENT = 2
555
SHUT_RDWR = 0
556
CRD_CERTIFICATE = 1
557
E_NO_CERTIFICATE_FOUND = -49
558
X509_FMT_DER = 0
559
NO_TICKETS = 1<<10
560
ENABLE_RAWPK = 1<<18
561
CTYPE_PEERS = 3
562
KEYID_USE_SHA256 = 1 # gnutls/x509.h
563
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
564
565
# Types
566
class session_int(ctypes.Structure):
567
_fields_ = []
568
session_t = ctypes.POINTER(session_int)
569
570
class certificate_credentials_st(ctypes.Structure):
571
_fields_ = []
572
certificate_credentials_t = ctypes.POINTER(
573
certificate_credentials_st)
574
certificate_type_t = ctypes.c_int
575
576
class datum_t(ctypes.Structure):
577
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
578
('size', ctypes.c_uint)]
579
580
class openpgp_crt_int(ctypes.Structure):
581
_fields_ = []
582
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
583
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
584
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
585
credentials_type_t = ctypes.c_int
586
transport_ptr_t = ctypes.c_void_p
587
close_request_t = ctypes.c_int
588
589
# Exceptions
590
class Error(Exception):
591
def __init__(self, message=None, code=None, args=()):
592
# Default usage is by a message string, but if a return
593
# code is passed, convert it to a string with
594
# gnutls.strerror()
595
self.code = code
596
if message is None and code is not None:
597
message = gnutls.strerror(code)
598
return super(gnutls.Error, self).__init__(
599
message, *args)
600
601
class CertificateSecurityError(Error):
602
pass
603
604
# Classes
605
class Credentials:
606
def __init__(self):
607
self._c_object = gnutls.certificate_credentials_t()
608
gnutls.certificate_allocate_credentials(
609
ctypes.byref(self._c_object))
610
self.type = gnutls.CRD_CERTIFICATE
611
612
def __del__(self):
613
gnutls.certificate_free_credentials(self._c_object)
614
615
class ClientSession:
616
def __init__(self, socket, credentials=None):
617
self._c_object = gnutls.session_t()
618
gnutls_flags = gnutls.CLIENT
619
if gnutls.check_version(b"3.5.6"):
620
gnutls_flags |= gnutls.NO_TICKETS
621
if gnutls.has_rawpk:
622
gnutls_flags |= gnutls.ENABLE_RAWPK
623
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
624
del gnutls_flags
625
gnutls.set_default_priority(self._c_object)
626
gnutls.transport_set_ptr(self._c_object, socket.fileno())
627
gnutls.handshake_set_private_extensions(self._c_object,
628
True)
629
self.socket = socket
630
if credentials is None:
631
credentials = gnutls.Credentials()
632
gnutls.credentials_set(self._c_object, credentials.type,
633
ctypes.cast(credentials._c_object,
634
ctypes.c_void_p))
635
self.credentials = credentials
636
637
def __del__(self):
638
gnutls.deinit(self._c_object)
639
640
def handshake(self):
641
return gnutls.handshake(self._c_object)
642
643
def send(self, data):
644
data = bytes(data)
645
data_len = len(data)
646
while data_len > 0:
647
data_len -= gnutls.record_send(self._c_object,
648
data[-data_len:],
649
data_len)
650
651
def bye(self):
652
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
653
654
# Error handling functions
655
def _error_code(result):
656
"""A function to raise exceptions on errors, suitable
657
for the 'restype' attribute on ctypes functions"""
658
if result >= 0:
659
return result
660
if result == gnutls.E_NO_CERTIFICATE_FOUND:
661
raise gnutls.CertificateSecurityError(code=result)
662
raise gnutls.Error(code=result)
663
664
def _retry_on_error(result, func, arguments):
665
"""A function to retry on some errors, suitable
666
for the 'errcheck' attribute on ctypes functions"""
667
while result < 0:
668
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
669
return _error_code(result)
670
result = func(*arguments)
671
return result
672
673
# Unless otherwise indicated, the function declarations below are
674
# all from the gnutls/gnutls.h C header file.
675
676
# Functions
677
priority_set_direct = _library.gnutls_priority_set_direct
678
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
679
ctypes.POINTER(ctypes.c_char_p)]
680
priority_set_direct.restype = _error_code
681
682
init = _library.gnutls_init
683
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
684
init.restype = _error_code
685
686
set_default_priority = _library.gnutls_set_default_priority
687
set_default_priority.argtypes = [session_t]
688
set_default_priority.restype = _error_code
689
690
record_send = _library.gnutls_record_send
691
record_send.argtypes = [session_t, ctypes.c_void_p,
692
ctypes.c_size_t]
693
record_send.restype = ctypes.c_ssize_t
694
record_send.errcheck = _retry_on_error
695
696
certificate_allocate_credentials = (
697
_library.gnutls_certificate_allocate_credentials)
698
certificate_allocate_credentials.argtypes = [
699
ctypes.POINTER(certificate_credentials_t)]
700
certificate_allocate_credentials.restype = _error_code
701
702
certificate_free_credentials = (
703
_library.gnutls_certificate_free_credentials)
704
certificate_free_credentials.argtypes = [
705
certificate_credentials_t]
706
certificate_free_credentials.restype = None
707
708
handshake_set_private_extensions = (
709
_library.gnutls_handshake_set_private_extensions)
710
handshake_set_private_extensions.argtypes = [session_t,
711
ctypes.c_int]
712
handshake_set_private_extensions.restype = None
713
714
credentials_set = _library.gnutls_credentials_set
715
credentials_set.argtypes = [session_t, credentials_type_t,
716
ctypes.c_void_p]
717
credentials_set.restype = _error_code
718
719
strerror = _library.gnutls_strerror
720
strerror.argtypes = [ctypes.c_int]
721
strerror.restype = ctypes.c_char_p
722
723
certificate_type_get = _library.gnutls_certificate_type_get
724
certificate_type_get.argtypes = [session_t]
725
certificate_type_get.restype = _error_code
726
727
certificate_get_peers = _library.gnutls_certificate_get_peers
728
certificate_get_peers.argtypes = [session_t,
729
ctypes.POINTER(ctypes.c_uint)]
730
certificate_get_peers.restype = ctypes.POINTER(datum_t)
731
732
global_set_log_level = _library.gnutls_global_set_log_level
733
global_set_log_level.argtypes = [ctypes.c_int]
734
global_set_log_level.restype = None
735
736
global_set_log_function = _library.gnutls_global_set_log_function
737
global_set_log_function.argtypes = [log_func]
738
global_set_log_function.restype = None
739
740
deinit = _library.gnutls_deinit
741
deinit.argtypes = [session_t]
742
deinit.restype = None
743
744
handshake = _library.gnutls_handshake
745
handshake.argtypes = [session_t]
746
handshake.restype = _error_code
747
handshake.errcheck = _retry_on_error
748
749
transport_set_ptr = _library.gnutls_transport_set_ptr
750
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
751
transport_set_ptr.restype = None
752
753
bye = _library.gnutls_bye
754
bye.argtypes = [session_t, close_request_t]
755
bye.restype = _error_code
756
bye.errcheck = _retry_on_error
757
758
check_version = _library.gnutls_check_version
759
check_version.argtypes = [ctypes.c_char_p]
760
check_version.restype = ctypes.c_char_p
761
762
_need_version = b"3.3.0"
763
if check_version(_need_version) is None:
764
raise self.Error("Needs GnuTLS {} or later"
765
.format(_need_version))
766
767
_tls_rawpk_version = b"3.6.6"
768
has_rawpk = bool(check_version(_tls_rawpk_version))
769
770
if has_rawpk:
771
# Types
772
class pubkey_st(ctypes.Structure):
773
_fields = []
774
pubkey_t = ctypes.POINTER(pubkey_st)
775
776
x509_crt_fmt_t = ctypes.c_int
777
778
# All the function declarations below are from
779
# gnutls/abstract.h
780
pubkey_init = _library.gnutls_pubkey_init
781
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
782
pubkey_init.restype = _error_code
783
784
pubkey_import = _library.gnutls_pubkey_import
785
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
786
x509_crt_fmt_t]
787
pubkey_import.restype = _error_code
788
789
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
790
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
791
ctypes.POINTER(ctypes.c_ubyte),
792
ctypes.POINTER(ctypes.c_size_t)]
793
pubkey_get_key_id.restype = _error_code
794
795
pubkey_deinit = _library.gnutls_pubkey_deinit
796
pubkey_deinit.argtypes = [pubkey_t]
797
pubkey_deinit.restype = None
798
else:
799
# All the function declarations below are from
800
# gnutls/openpgp.h
801
802
openpgp_crt_init = _library.gnutls_openpgp_crt_init
803
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
804
openpgp_crt_init.restype = _error_code
805
806
openpgp_crt_import = _library.gnutls_openpgp_crt_import
807
openpgp_crt_import.argtypes = [openpgp_crt_t,
808
ctypes.POINTER(datum_t),
809
openpgp_crt_fmt_t]
810
openpgp_crt_import.restype = _error_code
811
812
openpgp_crt_verify_self = \
813
_library.gnutls_openpgp_crt_verify_self
814
openpgp_crt_verify_self.argtypes = [
815
openpgp_crt_t,
816
ctypes.c_uint,
817
ctypes.POINTER(ctypes.c_uint),
818
]
819
openpgp_crt_verify_self.restype = _error_code
820
821
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
822
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
823
openpgp_crt_deinit.restype = None
824
825
openpgp_crt_get_fingerprint = (
826
_library.gnutls_openpgp_crt_get_fingerprint)
827
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
828
ctypes.c_void_p,
829
ctypes.POINTER(
830
ctypes.c_size_t)]
831
openpgp_crt_get_fingerprint.restype = _error_code
832
833
if check_version(b"3.6.4"):
834
certificate_type_get2 = _library.gnutls_certificate_type_get2
835
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
836
certificate_type_get2.restype = _error_code
837
838
# Remove non-public functions
839
del _error_code, _retry_on_error
840
841
842
def call_pipe(connection, # : multiprocessing.Connection
843
func, *args, **kwargs):
844
"""This function is meant to be called by multiprocessing.Process
845
846
This function runs func(*args, **kwargs), and writes the resulting
847
return value on the provided multiprocessing.Connection.
848
"""
849
connection.send(func(*args, **kwargs))
850
connection.close()
851
852
853
class Client:
387
854
"""A representation of a client host served by this server.
388
855
389
856
Attributes:
390
857
approved: bool(); 'None' if not yet approved/disapproved
391
858
approval_delay: datetime.timedelta(); Time to wait for approval
392
859
approval_duration: datetime.timedelta(); Duration of one approval
393
checker: subprocess.Popen(); a running checker process used
394
to see if the client lives.
395
'None' if no process is running.
396
checker_callback_tag: a gobject event source tag, or None
860
checker: multiprocessing.Process(); a running checker process used
861
to see if the client lives. 'None' if no process is
862
running.
863
checker_callback_tag: a GLib event source tag, or None
397
864
checker_command: string; External command which is run to check
398
865
if client lives. %() expansions are done at
399
866
runtime with vars(self) as dict, so that for
400
867
instance %(name)s can be used in the command.
401
checker_initiator_tag: a gobject event source tag, or None
868
checker_initiator_tag: a GLib event source tag, or None
402
869
created: datetime.datetime(); (UTC) object creation
403
870
client_structure: Object describing what attributes a client has
404
871
and is used for storing the client at exit
405
872
current_checker_command: string; current running checker_command
406
disable_initiator_tag: a gobject event source tag, or None
873
disable_initiator_tag: a GLib event source tag, or None
407
874
enabled: bool()
408
875
fingerprint: string (40 or 32 hexadecimal digits); used to
409
uniquely identify the client
876
uniquely identify an OpenPGP client
877
key_id: string (64 hexadecimal digits); used to uniquely identify
878
a client using raw public keys
410
879
host: string; available for use by the checker command
411
880
interval: datetime.timedelta(); How often to start a new checker
412
881
last_approval_request: datetime.datetime(); (UTC) or None
413
882
last_checked_ok: datetime.datetime(); (UTC) or None
414
415
883
last_checker_status: integer between 0 and 255 reflecting exit
416
884
status of last checker. -1 reflects crashed
417
checker, or None.
885
checker, -2 means no checker completed yet.
886
last_checker_signal: The signal which killed the last checker, if
887
last_checker_status is -1
418
888
last_enabled: datetime.datetime(); (UTC) or None
419
889
name: string; from the config file, used in log messages and
420
890
D-Bus identifiers
421
891
secret: bytestring; sent verbatim (over TLS) to client
422
892
timeout: datetime.timedelta(); How long from last_checked_ok
423
893
until this client is disabled
424
extended_timeout: extra long timeout when password has been sent
894
extended_timeout: extra long timeout when secret has been sent
425
895
runtime_expansions: Allowed attributes for runtime expansion.
426
896
expires: datetime.datetime(); time (UTC) when a client will be
427
897
disabled, or None
898
server_settings: The server_settings dict from main()
428
899
"""
429
900
430
901
runtime_expansions = ("approval_delay", "approval_duration",
431
"created", "enabled", "fingerprint",
432
"host", "interval", "last_checked_ok",
902
"created", "enabled", "expires", "key_id",
903
"fingerprint", "host", "interval",
904
"last_approval_request", "last_checked_ok",
433
905
"last_enabled", "name", "timeout")
434
435
def timeout_milliseconds(self):
436
"Return the 'timeout' attribute in milliseconds"
437
return timedelta_to_milliseconds(self.timeout)
438
439
def extended_timeout_milliseconds(self):
440
"Return the 'extended_timeout' attribute in milliseconds"
441
return timedelta_to_milliseconds(self.extended_timeout)
442
443
def interval_milliseconds(self):
444
"Return the 'interval' attribute in milliseconds"
445
return timedelta_to_milliseconds(self.interval)
446
447
def approval_delay_milliseconds(self):
448
return timedelta_to_milliseconds(self.approval_delay)
449
450
def __init__(self, name = None, config=None):
451
"""Note: the 'checker' key in 'config' sets the
452
'checker_command' attribute and *not* the 'checker'
453
attribute."""
906
client_defaults = {
907
"timeout": "PT5M",
908
"extended_timeout": "PT15M",
909
"interval": "PT2M",
910
"checker": "fping -q -- %%(host)s",
911
"host": "",
912
"approval_delay": "PT0S",
913
"approval_duration": "PT1S",
914
"approved_by_default": "True",
915
"enabled": "True",
916
}
917
918
@staticmethod
919
def config_parser(config):
920
"""Construct a new dict of client settings of this form:
921
{ client_name: {setting_name: value, ...}, ...}
922
with exceptions for any special settings as defined above.
923
NOTE: Must be a pure function. Must return the same result
924
value given the same arguments.
925
"""
926
settings = {}
927
for client_name in config.sections():
928
section = dict(config.items(client_name))
929
client = settings[client_name] = {}
930
931
client["host"] = section["host"]
932
# Reformat values from string types to Python types
933
client["approved_by_default"] = config.getboolean(
934
client_name, "approved_by_default")
935
client["enabled"] = config.getboolean(client_name,
936
"enabled")
937
938
# Uppercase and remove spaces from key_id and fingerprint
939
# for later comparison purposes with return value from the
940
# key_id() and fingerprint() functions
941
client["key_id"] = (section.get("key_id", "").upper()
942
.replace(" ", ""))
943
client["fingerprint"] = (section["fingerprint"].upper()
944
.replace(" ", ""))
945
if "secret" in section:
946
client["secret"] = codecs.decode(section["secret"]
947
.encode("utf-8"),
948
"base64")
949
elif "secfile" in section:
950
with open(os.path.expanduser(os.path.expandvars
951
(section["secfile"])),
952
"rb") as secfile:
953
client["secret"] = secfile.read()
954
else:
955
raise TypeError("No secret or secfile for section {}"
956
.format(section))
957
client["timeout"] = string_to_delta(section["timeout"])
958
client["extended_timeout"] = string_to_delta(
959
section["extended_timeout"])
960
client["interval"] = string_to_delta(section["interval"])
961
client["approval_delay"] = string_to_delta(
962
section["approval_delay"])
963
client["approval_duration"] = string_to_delta(
964
section["approval_duration"])
965
client["checker_command"] = section["checker"]
966
client["last_approval_request"] = None
967
client["last_checked_ok"] = None
968
client["last_checker_status"] = -2
969
970
return settings
971
972
def __init__(self, settings, name=None, server_settings=None):
454
973
self.name = name
455
if config is None:
456
config = {}
974
if server_settings is None:
975
server_settings = {}
976
self.server_settings = server_settings
977
# adding all client settings
978
for setting, value in settings.items():
979
setattr(self, setting, value)
980
981
if self.enabled:
982
if not hasattr(self, "last_enabled"):
983
self.last_enabled = datetime.datetime.utcnow()
984
if not hasattr(self, "expires"):
985
self.expires = (datetime.datetime.utcnow()
986
+ self.timeout)
987
else:
988
self.last_enabled = None
989
self.expires = None
990
457
991
logger.debug("Creating client %r", self.name)
458
# Uppercase and remove spaces from fingerprint for later
459
# comparison purposes with return value from the fingerprint()
460
# function
461
self.fingerprint = (config["fingerprint"].upper()
462
.replace(" ", ""))
992
logger.debug(" Key ID: %s", self.key_id)
463
993
logger.debug(" Fingerprint: %s", self.fingerprint)
464
if "secret" in config:
465
self.secret = config["secret"].decode("base64")
466
elif "secfile" in config:
467
with open(os.path.expanduser(os.path.expandvars
468
(config["secfile"])),
469
"rb") as secfile:
470
self.secret = secfile.read()
471
else:
472
raise TypeError("No secret or secfile for client %s"
473
% self.name)
474
self.host = config.get("host", "")
475
self.created = datetime.datetime.utcnow()
476
self.enabled = config.get("enabled", True)
477
self.last_approval_request = None
478
if self.enabled:
479
self.last_enabled = datetime.datetime.utcnow()
480
else:
481
self.last_enabled = None
482
self.last_checked_ok = None
483
self.last_checker_status = None
484
self.timeout = string_to_delta(config["timeout"])
485
self.extended_timeout = string_to_delta(config
486
["extended_timeout"])
487
self.interval = string_to_delta(config["interval"])
994
self.created = settings.get("created",
995
datetime.datetime.utcnow())
996
997
# attributes specific for this server instance
488
998
self.checker = None
489
999
self.checker_initiator_tag = None
490
1000
self.disable_initiator_tag = None
491
if self.enabled:
492
self.expires = datetime.datetime.utcnow() + self.timeout
493
else:
494
self.expires = None
495
1001
self.checker_callback_tag = None
496
self.checker_command = config["checker"]
497
1002
self.current_checker_command = None
498
1003
self.approved = None
499
self.approved_by_default = config.get("approved_by_default",
500
True)
501
1004
self.approvals_pending = 0
502
self.approval_delay = string_to_delta(
503
config["approval_delay"])
504
self.approval_duration = string_to_delta(
505
config["approval_duration"])
506
self.changedstate = (multiprocessing_manager
507
.Condition(multiprocessing_manager
508
.Lock()))
509
self.client_structure = [attr for attr in
510
self.__dict__.iterkeys()
1005
self.changedstate = multiprocessing_manager.Condition(
1006
multiprocessing_manager.Lock())
1007
self.client_structure = [attr
1008
for attr in self.__dict__.keys()
511
1009
if not attr.startswith("_")]
512
1010
self.client_structure.append("client_structure")
513
514
for name, t in inspect.getmembers(type(self),
515
lambda obj:
516
isinstance(obj,
517
property)):
1011
1012
for name, t in inspect.getmembers(
1013
type(self), lambda obj: isinstance(obj, property)):
518
1014
if not name.startswith("_"):
519
1015
self.client_structure.append(name)
520
1016
521
1017
# Send notice to process children that client state has changed
522
1018
def send_changedstate(self):
523
1019
with self.changedstate:
524
1020
self.changedstate.notify_all()
525
1021
526
1022
def enable(self):
527
1023
"""Start this client's checker and timeout hooks"""
528
1024
if getattr(self, "enabled", False):
529
1025
# Already enabled
530
1026
return
531
self.send_changedstate()
532
1027
self.expires = datetime.datetime.utcnow() + self.timeout
533
1028
self.enabled = True
534
1029
self.last_enabled = datetime.datetime.utcnow()
535
1030
self.init_checker()
536
1031
self.send_changedstate()
1032
537
1033
def disable(self, quiet=True):
538
1034
"""Disable this client."""
539
1035
if not getattr(self, "enabled", False):
540
1036
return False
541
1037
if not quiet:
542
self.send_changedstate()
543
if not quiet:
544
1038
logger.info("Disabling client %s", self.name)
545
if getattr(self, "disable_initiator_tag", False):
546
gobject.source_remove(self.disable_initiator_tag)
1039
if getattr(self, "disable_initiator_tag", None) is not None:
1040
GLib.source_remove(self.disable_initiator_tag)
547
1041
self.disable_initiator_tag = None
548
1042
self.expires = None
549
if getattr(self, "checker_initiator_tag", False):
550
gobject.source_remove(self.checker_initiator_tag)
1043
if getattr(self, "checker_initiator_tag", None) is not None:
1044
GLib.source_remove(self.checker_initiator_tag)
551
1045
self.checker_initiator_tag = None
552
1046
self.stop_checker()
553
1047
self.enabled = False
554
# Do not run this again if called by a gobject.timeout_add
1048
if not quiet:
1049
self.send_changedstate()
1050
# Do not run this again if called by a GLib.timeout_add
555
1051
return False
556
1052
557
1053
def __del__(self):
558
1054
self.disable()
559
1055
560
1056
def init_checker(self):
561
1057
# Schedule a new checker to be started an 'interval' from now,
562
1058
# and every interval from then on.
563
self.checker_initiator_tag = (gobject.timeout_add
564
(self.interval_milliseconds(),
565
self.start_checker))
1059
if self.checker_initiator_tag is not None:
1060
GLib.source_remove(self.checker_initiator_tag)
1061
self.checker_initiator_tag = GLib.timeout_add(
1062
random.randrange(int(self.interval.total_seconds() * 1000
1063
+ 1)),
1064
self.start_checker)
566
1065
# Schedule a disable() when 'timeout' has passed
567
self.disable_initiator_tag = (gobject.timeout_add
568
(self.timeout_milliseconds(),
569
self.disable))
1066
if self.disable_initiator_tag is not None:
1067
GLib.source_remove(self.disable_initiator_tag)
1068
self.disable_initiator_tag = GLib.timeout_add(
1069
int(self.timeout.total_seconds() * 1000), self.disable)
570
1070
# Also start a new checker *right now*.
571
1071
self.start_checker()
572
573
def checker_callback(self, pid, condition, command):
1072
1073
def checker_callback(self, source, condition, connection,
1074
command):
574
1075
"""The checker has completed, so take appropriate actions."""
1076
# Read return code from connection (see call_pipe)
1077
returncode = connection.recv()
1078
connection.close()
1079
if self.checker is not None:
1080
self.checker.join()
575
1081
self.checker_callback_tag = None
576
1082
self.checker = None
577
if os.WIFEXITED(condition):
578
self.last_checker_status = os.WEXITSTATUS(condition)
1083
1084
if returncode >= 0:
1085
self.last_checker_status = returncode
1086
self.last_checker_signal = None
579
1087
if self.last_checker_status == 0:
580
1088
logger.info("Checker for %(name)s succeeded",
581
1089
vars(self))
582
1090
self.checked_ok()
583
1091
else:
584
logger.info("Checker for %(name)s failed",
585
vars(self))
1092
logger.info("Checker for %(name)s failed", vars(self))
586
1093
else:
587
1094
self.last_checker_status = -1
1095
self.last_checker_signal = -returncode
588
1096
logger.warning("Checker for %(name)s crashed?",
589
1097
vars(self))
590
591
def checked_ok(self, timeout=None):
592
"""Bump up the timeout for this client.
593
594
This should only be called when the client has been seen,
595
alive and well.
596
"""
1098
return False
1099
1100
def checked_ok(self):
1101
"""Assert that the client has been seen, alive and well."""
1102
self.last_checked_ok = datetime.datetime.utcnow()
1103
self.last_checker_status = 0
1104
self.last_checker_signal = None
1105
self.bump_timeout()
1106
1107
def bump_timeout(self, timeout=None):
1108
"""Bump up the timeout for this client."""
597
1109
if timeout is None:
598
1110
timeout = self.timeout
599
self.last_checked_ok = datetime.datetime.utcnow()
600
1111
if self.disable_initiator_tag is not None:
601
gobject.source_remove(self.disable_initiator_tag)
1112
GLib.source_remove(self.disable_initiator_tag)
1113
self.disable_initiator_tag = None
602
1114
if getattr(self, "enabled", False):
603
self.disable_initiator_tag = (gobject.timeout_add
604
(timedelta_to_milliseconds
605
(timeout), self.disable))
1115
self.disable_initiator_tag = GLib.timeout_add(
1116
int(timeout.total_seconds() * 1000), self.disable)
606
1117
self.expires = datetime.datetime.utcnow() + timeout
607
1118
608
1119
def need_approval(self):
609
1120
self.last_approval_request = datetime.datetime.utcnow()
610
1121
611
1122
def start_checker(self):
612
1123
"""Start a new checker subprocess if one is not running.
613
1124
614
1125
If a checker already exists, leave it running and do
615
1126
nothing."""
616
1127
# The reason for not killing a running checker is that if we
617
# did that, then if a checker (for some reason) started
618
# running slowly and taking more than 'interval' time, the
619
# client would inevitably timeout, since no checker would get
620
# a chance to run to completion. If we instead leave running
1128
# did that, and if a checker (for some reason) started running
1129
# slowly and taking more than 'interval' time, then the client
1130
# would inevitably timeout, since no checker would get a
1131
# chance to run to completion. If we instead leave running
621
1132
# checkers alone, the checker would have to take more time
622
1133
# than 'timeout' for the client to be disabled, which is as it
623
1134
# should be.
624
625
# If a checker exists, make sure it is not a zombie
626
try:
627
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
628
except (AttributeError, OSError) as error:
629
if (isinstance(error, OSError)
630
and error.errno != errno.ECHILD):
631
raise error
632
else:
633
if pid:
634
logger.warning("Checker was a zombie")
635
gobject.source_remove(self.checker_callback_tag)
636
self.checker_callback(pid, status,
637
self.current_checker_command)
1135
1136
if self.checker is not None and not self.checker.is_alive():
1137
logger.warning("Checker was not alive; joining")
1138
self.checker.join()
1139
self.checker = None
638
1140
# Start a new checker if needed
639
1141
if self.checker is None:
1142
# Escape attributes for the shell
1143
escaped_attrs = {
1144
attr: shlex.quote(str(getattr(self, attr)))
1145
for attr in self.runtime_expansions}
640
1146
try:
641
# In case checker_command has exactly one % operator
642
command = self.checker_command % self.host
643
except TypeError:
644
# Escape attributes for the shell
645
escaped_attrs = dict(
646
(attr,
647
re.escape(unicode(str(getattr(self, attr, "")),
648
errors=
649
'replace')))
650
for attr in
651
self.runtime_expansions)
652
653
try:
654
command = self.checker_command % escaped_attrs
655
except TypeError as error:
656
logger.error('Could not format string "%s":'
657
' %s', self.checker_command, error)
658
return True # Try again later
1147
command = self.checker_command % escaped_attrs
1148
except TypeError as error:
1149
logger.error('Could not format string "%s"',
1150
self.checker_command,
1151
exc_info=error)
1152
return True # Try again later
659
1153
self.current_checker_command = command
660
try:
661
logger.info("Starting checker %r for %s",
662
command, self.name)
663
# We don't need to redirect stdout and stderr, since
664
# in normal mode, that is already done by daemon(),
665
# and in debug mode we don't want to. (Stdin is
666
# always replaced by /dev/null.)
667
self.checker = subprocess.Popen(command,
668
close_fds=True,
669
shell=True, cwd="/")
670
self.checker_callback_tag = (gobject.child_watch_add
671
(self.checker.pid,
672
self.checker_callback,
673
data=command))
674
# The checker may have completed before the gobject
675
# watch was added. Check for this.
676
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
677
if pid:
678
gobject.source_remove(self.checker_callback_tag)
679
self.checker_callback(pid, status, command)
680
except OSError as error:
681
logger.error("Failed to start subprocess: %s",
682
error)
683
# Re-run this periodically if run by gobject.timeout_add
1154
logger.info("Starting checker %r for %s", command,
1155
self.name)
1156
# We don't need to redirect stdout and stderr, since
1157
# in normal mode, that is already done by daemon(),
1158
# and in debug mode we don't want to. (Stdin is
1159
# always replaced by /dev/null.)
1160
# The exception is when not debugging but nevertheless
1161
# running in the foreground; use the previously
1162
# created wnull.
1163
popen_args = {"close_fds": True,
1164
"shell": True,
1165
"cwd": "/"}
1166
if (not self.server_settings["debug"]
1167
and self.server_settings["foreground"]):
1168
popen_args.update({"stdout": wnull,
1169
"stderr": wnull})
1170
pipe = multiprocessing.Pipe(duplex=False)
1171
self.checker = multiprocessing.Process(
1172
target=call_pipe,
1173
args=(pipe[1], subprocess.call, command),
1174
kwargs=popen_args)
1175
self.checker.start()
1176
self.checker_callback_tag = GLib.io_add_watch(
1177
GLib.IOChannel.unix_new(pipe[0].fileno()),
1178
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1179
self.checker_callback, pipe[0], command)
1180
# Re-run this periodically if run by GLib.timeout_add
684
1181
return True
685
1182
686
1183
def stop_checker(self):
687
1184
"""Force the checker process, if any, to stop."""
688
1185
if self.checker_callback_tag:
689
gobject.source_remove(self.checker_callback_tag)
1186
GLib.source_remove(self.checker_callback_tag)
690
1187
self.checker_callback_tag = None
691
1188
if getattr(self, "checker", None) is None:
692
1189
return
693
1190
logger.debug("Stopping checker for %(name)s", vars(self))
694
try:
695
os.kill(self.checker.pid, signal.SIGTERM)
696
#time.sleep(0.5)
697
#if self.checker.poll() is None:
698
# os.kill(self.checker.pid, signal.SIGKILL)
699
except OSError as error:
700
if error.errno != errno.ESRCH: # No such process
701
raise
1191
self.checker.terminate()
702
1192
self.checker = None
703
1193
704
1194
705
def dbus_service_property(dbus_interface, signature="v",
706
access="readwrite", byte_arrays=False):
1195
def dbus_service_property(dbus_interface,
1196
signature="v",
1197
access="readwrite",
1198
byte_arrays=False):
707
1199
"""Decorators for marking methods of a DBusObjectWithProperties to
708
1200
become properties on the D-Bus.
709
1201
710
1202
The decorated method will be called with no arguments by "Get"
711
1203
and with one argument by "Set".
712
1204
713
1205
The parameters, where they are supported, are the same as
714
1206
dbus.service.method, except there is only "signature", since the
715
1207
type from Get() and the type sent to Set() is the same.
718
1210
# "Set" method, so we fail early here:
719
1211
if byte_arrays and signature != "ay":
720
1212
raise ValueError("Byte arrays not supported for non-'ay'"
721
" signature %r" % signature)
1213
" signature {!r}".format(signature))
1214
722
1215
def decorator(func):
723
1216
func._dbus_is_property = True
724
1217
func._dbus_interface = dbus_interface
727
1220
func._dbus_name = func.__name__
728
1221
if func._dbus_name.endswith("_dbus_property"):
729
1222
func._dbus_name = func._dbus_name[:-14]
730
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
731
return func
1223
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1224
return func
1225
1226
return decorator
1227
1228
1229
def dbus_interface_annotations(dbus_interface):
1230
"""Decorator for marking functions returning interface annotations
1231
1232
Usage:
1233
1234
@dbus_interface_annotations("org.example.Interface")
1235
def _foo(self): # Function name does not matter
1236
return {"org.freedesktop.DBus.Deprecated": "true",
1237
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1238
"false"}
1239
"""
1240
1241
def decorator(func):
1242
func._dbus_is_interface = True
1243
func._dbus_interface = dbus_interface
1244
func._dbus_name = dbus_interface
1245
return func
1246
1247
return decorator
1248
1249
1250
def dbus_annotations(annotations):
1251
"""Decorator to annotate D-Bus methods, signals or properties
1252
Usage:
1253
1254
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1255
"org.freedesktop.DBus.Property."
1256
"EmitsChangedSignal": "false"})
1257
@dbus_service_property("org.example.Interface", signature="b",
1258
access="r")
1259
def Property_dbus_property(self):
1260
return dbus.Boolean(False)
1261
1262
See also the DBusObjectWithAnnotations class.
1263
"""
1264
1265
def decorator(func):
1266
func._dbus_annotations = annotations
1267
return func
1268
732
1269
return decorator
733
1270
734
1271
735
1272
class DBusPropertyException(dbus.exceptions.DBusException):
736
1273
"""A base class for D-Bus property-related exceptions
737
1274
"""
738
def __unicode__(self):
739
return unicode(str(self))
1275
pass
740
1276
741
1277
742
1278
class DBusPropertyAccessException(DBusPropertyException):
751
1287
pass
752
1288
753
1289
754
class DBusObjectWithProperties(dbus.service.Object):
1290
class DBusObjectWithAnnotations(dbus.service.Object):
1291
"""A D-Bus object with annotations.
1292
1293
Classes inheriting from this can use the dbus_annotations
1294
decorator to add annotations to methods or signals.
1295
"""
1296
1297
@staticmethod
1298
def _is_dbus_thing(thing):
1299
"""Returns a function testing if an attribute is a D-Bus thing
1300
1301
If called like _is_dbus_thing("method") it returns a function
1302
suitable for use as predicate to inspect.getmembers().
1303
"""
1304
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1305
False)
1306
1307
def _get_all_dbus_things(self, thing):
1308
"""Returns a generator of (name, attribute) pairs
1309
"""
1310
return ((getattr(athing.__get__(self), "_dbus_name", name),
1311
athing.__get__(self))
1312
for cls in self.__class__.__mro__
1313
for name, athing in
1314
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1315
1316
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1317
out_signature="s",
1318
path_keyword='object_path',
1319
connection_keyword='connection')
1320
def Introspect(self, object_path, connection):
1321
"""Overloading of standard D-Bus method.
1322
1323
Inserts annotation tags on methods and signals.
1324
"""
1325
xmlstring = dbus.service.Object.Introspect(self, object_path,
1326
connection)
1327
try:
1328
document = xml.dom.minidom.parseString(xmlstring)
1329
1330
for if_tag in document.getElementsByTagName("interface"):
1331
# Add annotation tags
1332
for typ in ("method", "signal"):
1333
for tag in if_tag.getElementsByTagName(typ):
1334
annots = dict()
1335
for name, prop in (self.
1336
_get_all_dbus_things(typ)):
1337
if (name == tag.getAttribute("name")
1338
and prop._dbus_interface
1339
== if_tag.getAttribute("name")):
1340
annots.update(getattr(
1341
prop, "_dbus_annotations", {}))
1342
for name, value in annots.items():
1343
ann_tag = document.createElement(
1344
"annotation")
1345
ann_tag.setAttribute("name", name)
1346
ann_tag.setAttribute("value", value)
1347
tag.appendChild(ann_tag)
1348
# Add interface annotation tags
1349
for annotation, value in dict(
1350
itertools.chain.from_iterable(
1351
annotations().items()
1352
for name, annotations
1353
in self._get_all_dbus_things("interface")
1354
if name == if_tag.getAttribute("name")
1355
)).items():
1356
ann_tag = document.createElement("annotation")
1357
ann_tag.setAttribute("name", annotation)
1358
ann_tag.setAttribute("value", value)
1359
if_tag.appendChild(ann_tag)
1360
# Fix argument name for the Introspect method itself
1361
if (if_tag.getAttribute("name")
1362
== dbus.INTROSPECTABLE_IFACE):
1363
for cn in if_tag.getElementsByTagName("method"):
1364
if cn.getAttribute("name") == "Introspect":
1365
for arg in cn.getElementsByTagName("arg"):
1366
if (arg.getAttribute("direction")
1367
== "out"):
1368
arg.setAttribute("name",
1369
"xml_data")
1370
xmlstring = document.toxml("utf-8")
1371
document.unlink()
1372
except (AttributeError, xml.dom.DOMException,
1373
xml.parsers.expat.ExpatError) as error:
1374
logger.error("Failed to override Introspection method",
1375
exc_info=error)
1376
return xmlstring
1377
1378
1379
class DBusObjectWithProperties(DBusObjectWithAnnotations):
755
1380
"""A D-Bus object with properties.
756
1381
757
1382
Classes inheriting from this can use the dbus_service_property
758
1383
decorator to expose methods as D-Bus properties. It exposes the
759
1384
standard Get(), Set(), and GetAll() methods on the D-Bus.
760
1385
"""
761
762
@staticmethod
763
def _is_dbus_property(obj):
764
return getattr(obj, "_dbus_is_property", False)
765
766
def _get_all_dbus_properties(self):
767
"""Returns a generator of (name, attribute) pairs
768
"""
769
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
770
for cls in self.__class__.__mro__
771
for name, prop in
772
inspect.getmembers(cls, self._is_dbus_property))
773
1386
774
1387
def _get_dbus_property(self, interface_name, property_name):
775
1388
"""Returns a bound method if one exists which is a D-Bus
776
1389
property with the specified name and interface.
777
1390
"""
778
for cls in self.__class__.__mro__:
779
for name, value in (inspect.getmembers
780
(cls, self._is_dbus_property)):
1391
for cls in self.__class__.__mro__:
1392
for name, value in inspect.getmembers(
1393
cls, self._is_dbus_thing("property")):
781
1394
if (value._dbus_name == property_name
782
1395
and value._dbus_interface == interface_name):
783
1396
return value.__get__(self)
784
1397
785
1398
# No such property
786
raise DBusPropertyNotFound(self.dbus_object_path + ":"
787
+ interface_name + "."
788
+ property_name)
789
790
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1399
raise DBusPropertyNotFound("{}:{}.{}".format(
1400
self.dbus_object_path, interface_name, property_name))
1401
1402
@classmethod
1403
def _get_all_interface_names(cls):
1404
"""Get a sequence of all interfaces supported by an object"""
1405
return (name for name in set(getattr(getattr(x, attr),
1406
"_dbus_interface", None)
1407
for x in (inspect.getmro(cls))
1408
for attr in dir(x))
1409
if name is not None)
1410
1411
@dbus.service.method(dbus.PROPERTIES_IFACE,
1412
in_signature="ss",
791
1413
out_signature="v")
792
1414
def Get(self, interface_name, property_name):
793
1415
"""Standard D-Bus property Get() method, see D-Bus standard.
799
1421
if not hasattr(value, "variant_level"):
800
1422
return value
801
1423
return type(value)(value, variant_level=value.variant_level+1)
802
1424
803
1425
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
804
1426
def Set(self, interface_name, property_name, value):
805
1427
"""Standard D-Bus property Set() method, see D-Bus standard.
811
1433
# The byte_arrays option is not supported yet on
812
1434
# signatures other than "ay".
813
1435
if prop._dbus_signature != "ay":
814
raise ValueError
815
value = dbus.ByteArray(''.join(unichr(byte)
816
for byte in value))
1436
raise ValueError("Byte arrays not supported for non-"
1437
"'ay' signature {!r}"
1438
.format(prop._dbus_signature))
1439
value = dbus.ByteArray(bytes(value))
817
1440
prop(value)
818
819
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1441
1442
@dbus.service.method(dbus.PROPERTIES_IFACE,
1443
in_signature="s",
820
1444
out_signature="a{sv}")
821
1445
def GetAll(self, interface_name):
822
1446
"""Standard D-Bus property GetAll() method, see D-Bus
823
1447
standard.
824
1448
825
1449
Note: Will not include properties with access="write".
826
1450
"""
827
1451
properties = {}
828
for name, prop in self._get_all_dbus_properties():
1452
for name, prop in self._get_all_dbus_things("property"):
829
1453
if (interface_name
830
1454
and interface_name != prop._dbus_interface):
831
1455
# Interface non-empty but did not match
837
1461
if not hasattr(value, "variant_level"):
838
1462
properties[name] = value
839
1463
continue
840
properties[name] = type(value)(value, variant_level=
841
value.variant_level+1)
1464
properties[name] = type(value)(
1465
value, variant_level=value.variant_level + 1)
842
1466
return dbus.Dictionary(properties, signature="sv")
843
1467
1468
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1469
def PropertiesChanged(self, interface_name, changed_properties,
1470
invalidated_properties):
1471
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1472
standard.
1473
"""
1474
pass
1475
844
1476
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
845
1477
out_signature="s",
846
1478
path_keyword='object_path',
847
1479
connection_keyword='connection')
848
1480
def Introspect(self, object_path, connection):
849
"""Standard D-Bus method, overloaded to insert property tags.
1481
"""Overloading of standard D-Bus method.
1482
1483
Inserts property tags and interface annotation tags.
850
1484
"""
851
xmlstring = dbus.service.Object.Introspect(self, object_path,
852
connection)
1485
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1486
object_path,
1487
connection)
853
1488
try:
854
1489
document = xml.dom.minidom.parseString(xmlstring)
1490
855
1491
def make_tag(document, name, prop):
856
1492
e = document.createElement("property")
857
1493
e.setAttribute("name", name)
858
1494
e.setAttribute("type", prop._dbus_signature)
859
1495
e.setAttribute("access", prop._dbus_access)
860
1496
return e
1497
861
1498
for if_tag in document.getElementsByTagName("interface"):
1499
# Add property tags
862
1500
for tag in (make_tag(document, name, prop)
863
1501
for name, prop
864
in self._get_all_dbus_properties()
1502
in self._get_all_dbus_things("property")
865
1503
if prop._dbus_interface
866
1504
== if_tag.getAttribute("name")):
867
1505
if_tag.appendChild(tag)
1506
# Add annotation tags for properties
1507
for tag in if_tag.getElementsByTagName("property"):
1508
annots = dict()
1509
for name, prop in self._get_all_dbus_things(
1510
"property"):
1511
if (name == tag.getAttribute("name")
1512
and prop._dbus_interface
1513
== if_tag.getAttribute("name")):
1514
annots.update(getattr(
1515
prop, "_dbus_annotations", {}))
1516
for name, value in annots.items():
1517
ann_tag = document.createElement(
1518
"annotation")
1519
ann_tag.setAttribute("name", name)
1520
ann_tag.setAttribute("value", value)
1521
tag.appendChild(ann_tag)
868
1522
# Add the names to the return values for the
869
1523
# "org.freedesktop.DBus.Properties" methods
870
1524
if (if_tag.getAttribute("name")
885
1539
except (AttributeError, xml.dom.DOMException,
886
1540
xml.parsers.expat.ExpatError) as error:
887
1541
logger.error("Failed to override Introspection method",
888
error)
889
return xmlstring
890
891
892
def datetime_to_dbus (dt, variant_level=0):
1542
exc_info=error)
1543
return xmlstring
1544
1545
1546
try:
1547
dbus.OBJECT_MANAGER_IFACE
1548
except AttributeError:
1549
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1550
1551
1552
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1553
"""A D-Bus object with an ObjectManager.
1554
1555
Classes inheriting from this exposes the standard
1556
GetManagedObjects call and the InterfacesAdded and
1557
InterfacesRemoved signals on the standard
1558
"org.freedesktop.DBus.ObjectManager" interface.
1559
1560
Note: No signals are sent automatically; they must be sent
1561
manually.
1562
"""
1563
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1564
out_signature="a{oa{sa{sv}}}")
1565
def GetManagedObjects(self):
1566
"""This function must be overridden"""
1567
raise NotImplementedError()
1568
1569
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1570
signature="oa{sa{sv}}")
1571
def InterfacesAdded(self, object_path, interfaces_and_properties):
1572
pass
1573
1574
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1575
def InterfacesRemoved(self, object_path, interfaces):
1576
pass
1577
1578
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1579
out_signature="s",
1580
path_keyword='object_path',
1581
connection_keyword='connection')
1582
def Introspect(self, object_path, connection):
1583
"""Overloading of standard D-Bus method.
1584
1585
Override return argument name of GetManagedObjects to be
1586
"objpath_interfaces_and_properties"
1587
"""
1588
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1589
object_path,
1590
connection)
1591
try:
1592
document = xml.dom.minidom.parseString(xmlstring)
1593
1594
for if_tag in document.getElementsByTagName("interface"):
1595
# Fix argument name for the GetManagedObjects method
1596
if (if_tag.getAttribute("name")
1597
== dbus.OBJECT_MANAGER_IFACE):
1598
for cn in if_tag.getElementsByTagName("method"):
1599
if (cn.getAttribute("name")
1600
== "GetManagedObjects"):
1601
for arg in cn.getElementsByTagName("arg"):
1602
if (arg.getAttribute("direction")
1603
== "out"):
1604
arg.setAttribute(
1605
"name",
1606
"objpath_interfaces"
1607
"_and_properties")
1608
xmlstring = document.toxml("utf-8")
1609
document.unlink()
1610
except (AttributeError, xml.dom.DOMException,
1611
xml.parsers.expat.ExpatError) as error:
1612
logger.error("Failed to override Introspection method",
1613
exc_info=error)
1614
return xmlstring
1615
1616
1617
def datetime_to_dbus(dt, variant_level=0):
893
1618
"""Convert a UTC datetime.datetime() to a D-Bus type."""
894
1619
if dt is None:
895
return dbus.String("", variant_level = variant_level)
896
return dbus.String(dt.isoformat(),
897
variant_level=variant_level)
898
899
900
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
901
.__metaclass__):
902
"""Applied to an empty subclass of a D-Bus object, this metaclass
903
will add additional D-Bus attributes matching a certain pattern.
1620
return dbus.String("", variant_level=variant_level)
1621
return dbus.String(dt.isoformat(), variant_level=variant_level)
1622
1623
1624
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1625
"""A class decorator; applied to a subclass of
1626
dbus.service.Object, it will add alternate D-Bus attributes with
1627
interface names according to the "alt_interface_names" mapping.
1628
Usage:
1629
1630
@alternate_dbus_interfaces({"org.example.Interface":
1631
"net.example.AlternateInterface"})
1632
class SampleDBusObject(dbus.service.Object):
1633
@dbus.service.method("org.example.Interface")
1634
def SampleDBusMethod():
1635
pass
1636
1637
The above "SampleDBusMethod" on "SampleDBusObject" will be
1638
reachable via two interfaces: "org.example.Interface" and
1639
"net.example.AlternateInterface", the latter of which will have
1640
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1641
"true", unless "deprecate" is passed with a False value.
1642
1643
This works for methods and signals, and also for D-Bus properties
1644
(from DBusObjectWithProperties) and interfaces (from the
1645
dbus_interface_annotations decorator).
904
1646
"""
905
def __new__(mcs, name, bases, attr):
906
# Go through all the base classes which could have D-Bus
907
# methods, signals, or properties in them
908
for base in (b for b in bases
909
if issubclass(b, dbus.service.Object)):
910
# Go though all attributes of the base class
911
for attrname, attribute in inspect.getmembers(base):
1647
1648
def wrapper(cls):
1649
for orig_interface_name, alt_interface_name in (
1650
alt_interface_names.items()):
1651
attr = {}
1652
interface_names = set()
1653
# Go though all attributes of the class
1654
for attrname, attribute in inspect.getmembers(cls):
912
1655
# Ignore non-D-Bus attributes, and D-Bus attributes
913
1656
# with the wrong interface name
914
1657
if (not hasattr(attribute, "_dbus_interface")
915
or not attribute._dbus_interface
916
.startswith("se.recompile.Mandos")):
1658
or not attribute._dbus_interface.startswith(
1659
orig_interface_name)):
917
1660
continue
918
1661
# Create an alternate D-Bus interface name based on
919
1662
# the current name
920
alt_interface = (attribute._dbus_interface
921
.replace("se.recompile.Mandos",
922
"se.bsnet.fukt.Mandos"))
1663
alt_interface = attribute._dbus_interface.replace(
1664
orig_interface_name, alt_interface_name)
1665
interface_names.add(alt_interface)
923
1666
# Is this a D-Bus signal?
924
1667
if getattr(attribute, "_dbus_is_signal", False):
925
# Extract the original non-method function by
926
# black magic
927
nonmethod_func = (dict(
1668
# Extract the original non-method undecorated
1669
# function by black magic
1670
if sys.version_info.major == 2:
1671
nonmethod_func = (dict(
928
1672
zip(attribute.func_code.co_freevars,
929
attribute.__closure__))["func"]
930
.cell_contents)
1673
attribute.__closure__))
1674
["func"].cell_contents)
1675
else:
1676
nonmethod_func = (dict(
1677
zip(attribute.__code__.co_freevars,
1678
attribute.__closure__))
1679
["func"].cell_contents)
931
1680
# Create a new, but exactly alike, function
932
1681
# object, and decorate it to be a new D-Bus signal
933
1682
# with the alternate D-Bus interface name
934
new_function = (dbus.service.signal
935
(alt_interface,
936
attribute._dbus_signature)
937
(types.FunctionType(
938
nonmethod_func.func_code,
939
nonmethod_func.func_globals,
940
nonmethod_func.func_name,
941
nonmethod_func.func_defaults,
942
nonmethod_func.func_closure)))
1683
new_function = copy_function(nonmethod_func)
1684
new_function = (dbus.service.signal(
1685
alt_interface,
1686
attribute._dbus_signature)(new_function))
1687
# Copy annotations, if any
1688
try:
1689
new_function._dbus_annotations = dict(
1690
attribute._dbus_annotations)
1691
except AttributeError:
1692
pass
1693
943
1694
# Define a creator of a function to call both the
944
# old and new functions, so both the old and new
945
# signals gets sent when the function is called
1695
# original and alternate functions, so both the
1696
# original and alternate signals gets sent when
1697
# the function is called
946
1698
def fixscope(func1, func2):
947
1699
"""This function is a scope container to pass
948
1700
func1 and func2 to the "call_both" function
949
1701
outside of its arguments"""
1702
1703
@functools.wraps(func2)
950
1704
def call_both(*args, **kwargs):
951
1705
"""This function will emit two D-Bus
952
1706
signals by calling func1 and func2"""
953
1707
func1(*args, **kwargs)
954
1708
func2(*args, **kwargs)
1709
# Make wrapper function look like a D-Bus
1710
# signal
1711
for name, attr in inspect.getmembers(func2):
1712
if name.startswith("_dbus_"):
1713
setattr(call_both, name, attr)
1714
955
1715
return call_both
956
1716
# Create the "call_both" function and add it to
957
1717
# the class
958
attr[attrname] = fixscope(attribute,
959
new_function)
1718
attr[attrname] = fixscope(attribute, new_function)
960
1719
# Is this a D-Bus method?
961
1720
elif getattr(attribute, "_dbus_is_method", False):
962
1721
# Create a new, but exactly alike, function
963
1722
# object. Decorate it to be a new D-Bus method
964
1723
# with the alternate D-Bus interface name. Add it
965
1724
# to the class.
966
attr[attrname] = (dbus.service.method
967
(alt_interface,
968
attribute._dbus_in_signature,
969
attribute._dbus_out_signature)
970
(types.FunctionType
971
(attribute.func_code,
972
attribute.func_globals,
973
attribute.func_name,
974
attribute.func_defaults,
975
attribute.func_closure)))
1725
attr[attrname] = (
1726
dbus.service.method(
1727
alt_interface,
1728
attribute._dbus_in_signature,
1729
attribute._dbus_out_signature)
1730
(copy_function(attribute)))
1731
# Copy annotations, if any
1732
try:
1733
attr[attrname]._dbus_annotations = dict(
1734
attribute._dbus_annotations)
1735
except AttributeError:
1736
pass
976
1737
# Is this a D-Bus property?
977
1738
elif getattr(attribute, "_dbus_is_property", False):
978
1739
# Create a new, but exactly alike, function
979
1740
# object, and decorate it to be a new D-Bus
980
1741
# property with the alternate D-Bus interface
981
1742
# name. Add it to the class.
982
attr[attrname] = (dbus_service_property
983
(alt_interface,
984
attribute._dbus_signature,
985
attribute._dbus_access,
986
attribute
987
._dbus_get_args_options
988
["byte_arrays"])
989
(types.FunctionType
990
(attribute.func_code,
991
attribute.func_globals,
992
attribute.func_name,
993
attribute.func_defaults,
994
attribute.func_closure)))
995
return type.__new__(mcs, name, bases, attr)
996
997
1743
attr[attrname] = (dbus_service_property(
1744
alt_interface, attribute._dbus_signature,
1745
attribute._dbus_access,
1746
attribute._dbus_get_args_options
1747
["byte_arrays"])
1748
(copy_function(attribute)))
1749
# Copy annotations, if any
1750
try:
1751
attr[attrname]._dbus_annotations = dict(
1752
attribute._dbus_annotations)
1753
except AttributeError:
1754
pass
1755
# Is this a D-Bus interface?
1756
elif getattr(attribute, "_dbus_is_interface", False):
1757
# Create a new, but exactly alike, function
1758
# object. Decorate it to be a new D-Bus interface
1759
# with the alternate D-Bus interface name. Add it
1760
# to the class.
1761
attr[attrname] = (
1762
dbus_interface_annotations(alt_interface)
1763
(copy_function(attribute)))
1764
if deprecate:
1765
# Deprecate all alternate interfaces
1766
iname = "_AlternateDBusNames_interface_annotation{}"
1767
for interface_name in interface_names:
1768
1769
@dbus_interface_annotations(interface_name)
1770
def func(self):
1771
return {"org.freedesktop.DBus.Deprecated":
1772
"true"}
1773
# Find an unused name
1774
for aname in (iname.format(i)
1775
for i in itertools.count()):
1776
if aname not in attr:
1777
attr[aname] = func
1778
break
1779
if interface_names:
1780
# Replace the class with a new subclass of it with
1781
# methods, signals, etc. as created above.
1782
if sys.version_info.major == 2:
1783
cls = type(b"{}Alternate".format(cls.__name__),
1784
(cls, ), attr)
1785
else:
1786
cls = type("{}Alternate".format(cls.__name__),
1787
(cls, ), attr)
1788
return cls
1789
1790
return wrapper
1791
1792
1793
@alternate_dbus_interfaces({"se.recompile.Mandos":
1794
"se.bsnet.fukt.Mandos"})
998
1795
class ClientDBus(Client, DBusObjectWithProperties):
999
1796
"""A Client class using D-Bus
1000
1797
1001
1798
Attributes:
1002
1799
dbus_object_path: dbus.ObjectPath
1003
1800
bus: dbus.SystemBus()
1004
1801
"""
1005
1802
1006
1803
runtime_expansions = (Client.runtime_expansions
1007
+ ("dbus_object_path",))
1008
1804
+ ("dbus_object_path", ))
1805
1806
_interface = "se.recompile.Mandos.Client"
1807
1009
1808
# dbus.service.Object doesn't use super(), so we can't either.
1010
1011
def __init__(self, bus = None, *args, **kwargs):
1809
1810
def __init__(self, bus=None, *args, **kwargs):
1012
1811
self.bus = bus
1013
1812
Client.__init__(self, *args, **kwargs)
1014
1015
self._approvals_pending = 0
1016
1813
# Only now, when this client is initialized, can it show up on
1017
1814
# the D-Bus
1018
client_object_name = unicode(self.name).translate(
1815
client_object_name = str(self.name).translate(
1019
1816
{ord("."): ord("_"),
1020
1817
ord("-"): ord("_")})
1021
self.dbus_object_path = (dbus.ObjectPath
1022
("/clients/" + client_object_name))
1818
self.dbus_object_path = dbus.ObjectPath(
1819
"/clients/" + client_object_name)
1023
1820
DBusObjectWithProperties.__init__(self, self.bus,
1024
1821
self.dbus_object_path)
1025
1026
def notifychangeproperty(transform_func,
1027
dbus_name, type_func=lambda x: x,
1028
variant_level=1):
1822
1823
def notifychangeproperty(transform_func, dbus_name,
1824
type_func=lambda x: x,
1825
variant_level=1,
1826
invalidate_only=False,
1827
_interface=_interface):
1029
1828
""" Modify a variable so that it's a property which announces
1030
1829
its changes to DBus.
1031
1830
1032
1831
transform_fun: Function that takes a value and a variant_level
1033
1832
and transforms it to a D-Bus type.
1034
1833
dbus_name: D-Bus name of the variable
1036
1835
to the D-Bus. Default: no transform
1037
1836
variant_level: D-Bus variant level. Default: 1
1038
1837
"""
1039
attrname = "_{0}".format(dbus_name)
1838
attrname = "_{}".format(dbus_name)
1839
1040
1840
def setter(self, value):
1041
1841
if hasattr(self, "dbus_object_path"):
1042
1842
if (not hasattr(self, attrname) or
1043
1843
type_func(getattr(self, attrname, None))
1044
1844
!= type_func(value)):
1045
dbus_value = transform_func(type_func(value),
1046
variant_level
1047
=variant_level)
1048
self.PropertyChanged(dbus.String(dbus_name),
1049
dbus_value)
1845
if invalidate_only:
1846
self.PropertiesChanged(
1847
_interface, dbus.Dictionary(),
1848
dbus.Array((dbus_name, )))
1849
else:
1850
dbus_value = transform_func(
1851
type_func(value),
1852
variant_level=variant_level)
1853
self.PropertyChanged(dbus.String(dbus_name),
1854
dbus_value)
1855
self.PropertiesChanged(
1856
_interface,
1857
dbus.Dictionary({dbus.String(dbus_name):
1858
dbus_value}),
1859
dbus.Array())
1050
1860
setattr(self, attrname, value)
1051
1861
1052
1862
return property(lambda self: getattr(self, attrname), setter)
1053
1054
1863
1055
1864
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1056
1865
approvals_pending = notifychangeproperty(dbus.Boolean,
1057
1866
"ApprovalPending",
1058
type_func = bool)
1867
type_func=bool)
1059
1868
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1060
1869
last_enabled = notifychangeproperty(datetime_to_dbus,
1061
1870
"LastEnabled")
1062
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1063
type_func = lambda checker:
1064
checker is not None)
1871
checker = notifychangeproperty(
1872
dbus.Boolean, "CheckerRunning",
1873
type_func=lambda checker: checker is not None)
1065
1874
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1066
1875
"LastCheckedOK")
1876
last_checker_status = notifychangeproperty(dbus.Int16,
1877
"LastCheckerStatus")
1067
1878
last_approval_request = notifychangeproperty(
1068
1879
datetime_to_dbus, "LastApprovalRequest")
1069
1880
approved_by_default = notifychangeproperty(dbus.Boolean,
1070
1881
"ApprovedByDefault")
1071
approval_delay = notifychangeproperty(dbus.UInt16,
1072
"ApprovalDelay",
1073
type_func =
1074
timedelta_to_milliseconds)
1882
approval_delay = notifychangeproperty(
1883
dbus.UInt64, "ApprovalDelay",
1884
type_func=lambda td: td.total_seconds() * 1000)
1075
1885
approval_duration = notifychangeproperty(
1076
dbus.UInt16, "ApprovalDuration",
1077
type_func = timedelta_to_milliseconds)
1886
dbus.UInt64, "ApprovalDuration",
1887
type_func=lambda td: td.total_seconds() * 1000)
1078
1888
host = notifychangeproperty(dbus.String, "Host")
1079
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1080
type_func =
1081
timedelta_to_milliseconds)
1889
timeout = notifychangeproperty(
1890
dbus.UInt64, "Timeout",
1891
type_func=lambda td: td.total_seconds() * 1000)
1082
1892
extended_timeout = notifychangeproperty(
1083
dbus.UInt16, "ExtendedTimeout",
1084
type_func = timedelta_to_milliseconds)
1085
interval = notifychangeproperty(dbus.UInt16,
1086
"Interval",
1087
type_func =
1088
timedelta_to_milliseconds)
1893
dbus.UInt64, "ExtendedTimeout",
1894
type_func=lambda td: td.total_seconds() * 1000)
1895
interval = notifychangeproperty(
1896
dbus.UInt64, "Interval",
1897
type_func=lambda td: td.total_seconds() * 1000)
1089
1898
checker_command = notifychangeproperty(dbus.String, "Checker")
1090
1899
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1900
invalidate_only=True)
1901
1091
1902
del notifychangeproperty
1092
1903
1093
1904
def __del__(self, *args, **kwargs):
1094
1905
try:
1095
1906
self.remove_from_connection()
1098
1909
if hasattr(DBusObjectWithProperties, "__del__"):
1099
1910
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1100
1911
Client.__del__(self, *args, **kwargs)
1101
1102
def checker_callback(self, pid, condition, command,
1103
*args, **kwargs):
1104
self.checker_callback_tag = None
1105
self.checker = None
1106
if os.WIFEXITED(condition):
1107
exitstatus = os.WEXITSTATUS(condition)
1912
1913
def checker_callback(self, source, condition,
1914
connection, command, *args, **kwargs):
1915
ret = Client.checker_callback(self, source, condition,
1916
connection, command, *args,
1917
**kwargs)
1918
exitstatus = self.last_checker_status
1919
if exitstatus >= 0:
1108
1920
# Emit D-Bus signal
1109
1921
self.CheckerCompleted(dbus.Int16(exitstatus),
1110
dbus.Int64(condition),
1922
# This is specific to GNU libC
1923
dbus.Int64(exitstatus << 8),
1111
1924
dbus.String(command))
1112
1925
else:
1113
1926
# Emit D-Bus signal
1114
1927
self.CheckerCompleted(dbus.Int16(-1),
1115
dbus.Int64(condition),
1928
dbus.Int64(
1929
# This is specific to GNU libC
1930
(exitstatus << 8)
1931
| self.last_checker_signal),
1116
1932
dbus.String(command))
1117
1118
return Client.checker_callback(self, pid, condition, command,
1119
*args, **kwargs)
1120
1933
return ret
1934
1121
1935
def start_checker(self, *args, **kwargs):
1122
old_checker = self.checker
1123
if self.checker is not None:
1124
old_checker_pid = self.checker.pid
1125
else:
1126
old_checker_pid = None
1936
old_checker_pid = getattr(self.checker, "pid", None)
1127
1937
r = Client.start_checker(self, *args, **kwargs)
1128
1938
# Only if new checker process was started
1129
1939
if (self.checker is not None
1131
1941
# Emit D-Bus signal
1132
1942
self.CheckerStarted(self.current_checker_command)
1133
1943
return r
1134
1944
1135
1945
def _reset_approved(self):
1136
1946
self.approved = None
1137
1947
return False
1138
1948
1139
1949
def approve(self, value=True):
1140
self.send_changedstate()
1141
1950
self.approved = value
1142
gobject.timeout_add(timedelta_to_milliseconds
1143
(self.approval_duration),
1144
self._reset_approved)
1145
1146
1147
## D-Bus methods, signals & properties
1148
_interface = "se.recompile.Mandos.Client"
1149
1150
## Signals
1151
1951
GLib.timeout_add(int(self.approval_duration.total_seconds()
1952
* 1000), self._reset_approved)
1953
self.send_changedstate()
1954
1955
# D-Bus methods, signals & properties
1956
1957
# Interfaces
1958
1959
# Signals
1960
1152
1961
# CheckerCompleted - signal
1153
1962
@dbus.service.signal(_interface, signature="nxs")
1154
1963
def CheckerCompleted(self, exitcode, waitstatus, command):
1155
1964
"D-Bus signal"
1156
1965
pass
1157
1966
1158
1967
# CheckerStarted - signal
1159
1968
@dbus.service.signal(_interface, signature="s")
1160
1969
def CheckerStarted(self, command):
1161
1970
"D-Bus signal"
1162
1971
pass
1163
1972
1164
1973
# PropertyChanged - signal
1974
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1165
1975
@dbus.service.signal(_interface, signature="sv")
1166
1976
def PropertyChanged(self, property, value):
1167
1977
"D-Bus signal"
1168
1978
pass
1169
1979
1170
1980
# GotSecret - signal
1171
1981
@dbus.service.signal(_interface)
1172
1982
def GotSecret(self):
1175
1985
server to mandos-client
1176
1986
"""
1177
1987
pass
1178
1988
1179
1989
# Rejected - signal
1180
1990
@dbus.service.signal(_interface, signature="s")
1181
1991
def Rejected(self, reason):
1182
1992
"D-Bus signal"
1183
1993
pass
1184
1994
1185
1995
# NeedApproval - signal
1186
1996
@dbus.service.signal(_interface, signature="tb")
1187
1997
def NeedApproval(self, timeout, default):
1188
1998
"D-Bus signal"
1189
1999
return self.need_approval()
1190
1191
# NeRwequest - signal
1192
@dbus.service.signal(_interface, signature="s")
1193
def NewRequest(self, ip):
1194
"""D-Bus signal
1195
Is sent after a client request a password.
1196
"""
1197
pass
1198
1199
## Methods
1200
2000
2001
# Methods
2002
1201
2003
# Approve - method
1202
2004
@dbus.service.method(_interface, in_signature="b")
1203
2005
def Approve(self, value):
1204
2006
self.approve(value)
1205
2007
1206
2008
# CheckedOK - method
1207
2009
@dbus.service.method(_interface)
1208
2010
def CheckedOK(self):
1209
2011
self.checked_ok()
1210
2012
1211
2013
# Enable - method
2014
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1212
2015
@dbus.service.method(_interface)
1213
2016
def Enable(self):
1214
2017
"D-Bus method"
1215
2018
self.enable()
1216
2019
1217
2020
# StartChecker - method
2021
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1218
2022
@dbus.service.method(_interface)
1219
2023
def StartChecker(self):
1220
2024
"D-Bus method"
1221
2025
self.start_checker()
1222
2026
1223
2027
# Disable - method
2028
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1224
2029
@dbus.service.method(_interface)
1225
2030
def Disable(self):
1226
2031
"D-Bus method"
1227
2032
self.disable()
1228
2033
1229
2034
# StopChecker - method
2035
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1230
2036
@dbus.service.method(_interface)
1231
2037
def StopChecker(self):
1232
2038
self.stop_checker()
1233
1234
## Properties
1235
2039
2040
# Properties
2041
1236
2042
# ApprovalPending - property
1237
2043
@dbus_service_property(_interface, signature="b", access="read")
1238
2044
def ApprovalPending_dbus_property(self):
1239
2045
return dbus.Boolean(bool(self.approvals_pending))
1240
2046
1241
2047
# ApprovedByDefault - property
1242
@dbus_service_property(_interface, signature="b",
2048
@dbus_service_property(_interface,
2049
signature="b",
1243
2050
access="readwrite")
1244
2051
def ApprovedByDefault_dbus_property(self, value=None):
1245
2052
if value is None: # get
1246
2053
return dbus.Boolean(self.approved_by_default)
1247
2054
self.approved_by_default = bool(value)
1248
2055
1249
2056
# ApprovalDelay - property
1250
@dbus_service_property(_interface, signature="t",
2057
@dbus_service_property(_interface,
2058
signature="t",
1251
2059
access="readwrite")
1252
2060
def ApprovalDelay_dbus_property(self, value=None):
1253
2061
if value is None: # get
1254
return dbus.UInt64(self.approval_delay_milliseconds())
2062
return dbus.UInt64(self.approval_delay.total_seconds()
2063
* 1000)
1255
2064
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1256
2065
1257
2066
# ApprovalDuration - property
1258
@dbus_service_property(_interface, signature="t",
2067
@dbus_service_property(_interface,
2068
signature="t",
1259
2069
access="readwrite")
1260
2070
def ApprovalDuration_dbus_property(self, value=None):
1261
2071
if value is None: # get
1262
return dbus.UInt64(timedelta_to_milliseconds(
1263
self.approval_duration))
2072
return dbus.UInt64(self.approval_duration.total_seconds()
2073
* 1000)
1264
2074
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1265
2075
1266
2076
# Name - property
2077
@dbus_annotations(
2078
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1267
2079
@dbus_service_property(_interface, signature="s", access="read")
1268
2080
def Name_dbus_property(self):
1269
2081
return dbus.String(self.name)
1270
2082
2083
# KeyID - property
2084
@dbus_annotations(
2085
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2086
@dbus_service_property(_interface, signature="s", access="read")
2087
def KeyID_dbus_property(self):
2088
return dbus.String(self.key_id)
2089
1271
2090
# Fingerprint - property
2091
@dbus_annotations(
2092
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1272
2093
@dbus_service_property(_interface, signature="s", access="read")
1273
2094
def Fingerprint_dbus_property(self):
1274
2095
return dbus.String(self.fingerprint)
1275
2096
1276
2097
# Host - property
1277
@dbus_service_property(_interface, signature="s",
2098
@dbus_service_property(_interface,
2099
signature="s",
1278
2100
access="readwrite")
1279
2101
def Host_dbus_property(self, value=None):
1280
2102
if value is None: # get
1281
2103
return dbus.String(self.host)
1282
self.host = value
1283
2104
self.host = str(value)
2105
1284
2106
# Created - property
2107
@dbus_annotations(
2108
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1285
2109
@dbus_service_property(_interface, signature="s", access="read")
1286
2110
def Created_dbus_property(self):
1287
2111
return datetime_to_dbus(self.created)
1288
2112
1289
2113
# LastEnabled - property
1290
2114
@dbus_service_property(_interface, signature="s", access="read")
1291
2115
def LastEnabled_dbus_property(self):
1292
2116
return datetime_to_dbus(self.last_enabled)
1293
2117
1294
2118
# Enabled - property
1295
@dbus_service_property(_interface, signature="b",
2119
@dbus_service_property(_interface,
2120
signature="b",
1296
2121
access="readwrite")
1297
2122
def Enabled_dbus_property(self, value=None):
1298
2123
if value is None: # get
1301
2126
self.enable()
1302
2127
else:
1303
2128
self.disable()
1304
2129
1305
2130
# LastCheckedOK - property
1306
@dbus_service_property(_interface, signature="s",
2131
@dbus_service_property(_interface,
2132
signature="s",
1307
2133
access="readwrite")
1308
2134
def LastCheckedOK_dbus_property(self, value=None):
1309
2135
if value is not None:
1310
2136
self.checked_ok()
1311
2137
return
1312
2138
return datetime_to_dbus(self.last_checked_ok)
1313
2139
2140
# LastCheckerStatus - property
2141
@dbus_service_property(_interface, signature="n", access="read")
2142
def LastCheckerStatus_dbus_property(self):
2143
return dbus.Int16(self.last_checker_status)
2144
1314
2145
# Expires - property
1315
2146
@dbus_service_property(_interface, signature="s", access="read")
1316
2147
def Expires_dbus_property(self):
1317
2148
return datetime_to_dbus(self.expires)
1318
2149
1319
2150
# LastApprovalRequest - property
1320
2151
@dbus_service_property(_interface, signature="s", access="read")
1321
2152
def LastApprovalRequest_dbus_property(self):
1322
2153
return datetime_to_dbus(self.last_approval_request)
1323
2154
1324
2155
# Timeout - property
1325
@dbus_service_property(_interface, signature="t",
2156
@dbus_service_property(_interface,
2157
signature="t",
1326
2158
access="readwrite")
1327
2159
def Timeout_dbus_property(self, value=None):
1328
2160
if value is None: # get
1329
return dbus.UInt64(self.timeout_milliseconds())
2161
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2162
old_timeout = self.timeout
1330
2163
self.timeout = datetime.timedelta(0, 0, 0, value)
1331
if getattr(self, "disable_initiator_tag", None) is None:
1332
return
1333
# Reschedule timeout
1334
gobject.source_remove(self.disable_initiator_tag)
1335
self.disable_initiator_tag = None
1336
self.expires = None
1337
time_to_die = timedelta_to_milliseconds((self
1338
.last_checked_ok
1339
+ self.timeout)
1340
- datetime.datetime
1341
.utcnow())
1342
if time_to_die <= 0:
1343
# The timeout has passed
1344
self.disable()
1345
else:
1346
self.expires = (datetime.datetime.utcnow()
1347
+ datetime.timedelta(milliseconds =
1348
time_to_die))
1349
self.disable_initiator_tag = (gobject.timeout_add
1350
(time_to_die, self.disable))
1351
2164
# Reschedule disabling
2165
if self.enabled:
2166
now = datetime.datetime.utcnow()
2167
self.expires += self.timeout - old_timeout
2168
if self.expires <= now:
2169
# The timeout has passed
2170
self.disable()
2171
else:
2172
if (getattr(self, "disable_initiator_tag", None)
2173
is None):
2174
return
2175
GLib.source_remove(self.disable_initiator_tag)
2176
self.disable_initiator_tag = GLib.timeout_add(
2177
int((self.expires - now).total_seconds() * 1000),
2178
self.disable)
2179
1352
2180
# ExtendedTimeout - property
1353
@dbus_service_property(_interface, signature="t",
2181
@dbus_service_property(_interface,
2182
signature="t",
1354
2183
access="readwrite")
1355
2184
def ExtendedTimeout_dbus_property(self, value=None):
1356
2185
if value is None: # get
1357
return dbus.UInt64(self.extended_timeout_milliseconds())
2186
return dbus.UInt64(self.extended_timeout.total_seconds()
2187
* 1000)
1358
2188
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1359
2189
1360
2190
# Interval - property
1361
@dbus_service_property(_interface, signature="t",
2191
@dbus_service_property(_interface,
2192
signature="t",
1362
2193
access="readwrite")
1363
2194
def Interval_dbus_property(self, value=None):
1364
2195
if value is None: # get
1365
return dbus.UInt64(self.interval_milliseconds())
2196
return dbus.UInt64(self.interval.total_seconds() * 1000)
1366
2197
self.interval = datetime.timedelta(0, 0, 0, value)
1367
2198
if getattr(self, "checker_initiator_tag", None) is None:
1368
2199
return
1369
2200
if self.enabled:
1370
2201
# Reschedule checker run
1371
gobject.source_remove(self.checker_initiator_tag)
1372
self.checker_initiator_tag = (gobject.timeout_add
1373
(value, self.start_checker))
1374
self.start_checker() # Start one now, too
1375
2202
GLib.source_remove(self.checker_initiator_tag)
2203
self.checker_initiator_tag = GLib.timeout_add(
2204
value, self.start_checker)
2205
self.start_checker() # Start one now, too
2206
1376
2207
# Checker - property
1377
@dbus_service_property(_interface, signature="s",
2208
@dbus_service_property(_interface,
2209
signature="s",
1378
2210
access="readwrite")
1379
2211
def Checker_dbus_property(self, value=None):
1380
2212
if value is None: # get
1381
2213
return dbus.String(self.checker_command)
1382
self.checker_command = value
1383
2214
self.checker_command = str(value)
2215
1384
2216
# CheckerRunning - property
1385
@dbus_service_property(_interface, signature="b",
2217
@dbus_service_property(_interface,
2218
signature="b",
1386
2219
access="readwrite")
1387
2220
def CheckerRunning_dbus_property(self, value=None):
1388
2221
if value is None: # get
1391
2224
self.start_checker()
1392
2225
else:
1393
2226
self.stop_checker()
1394
2227
1395
2228
# ObjectPath - property
2229
@dbus_annotations(
2230
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2231
"org.freedesktop.DBus.Deprecated": "true"})
1396
2232
@dbus_service_property(_interface, signature="o", access="read")
1397
2233
def ObjectPath_dbus_property(self):
1398
return self.dbus_object_path # is already a dbus.ObjectPath
1399
2234
return self.dbus_object_path # is already a dbus.ObjectPath
2235
1400
2236
# Secret = property
1401
@dbus_service_property(_interface, signature="ay",
1402
access="write", byte_arrays=True)
2237
@dbus_annotations(
2238
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2239
"invalidates"})
2240
@dbus_service_property(_interface,
2241
signature="ay",
2242
access="write",
2243
byte_arrays=True)
1403
2244
def Secret_dbus_property(self, value):
1404
self.secret = str(value)
1405
2245
self.secret = bytes(value)
2246
1406
2247
del _interface
1407
2248
1408
2249
1409
class ProxyClient(object):
1410
def __init__(self, child_pipe, fpr, address):
2250
class ProxyClient:
2251
def __init__(self, child_pipe, key_id, fpr, address):
1411
2252
self._pipe = child_pipe
1412
self._pipe.send(('init', fpr, address))
2253
self._pipe.send(('init', key_id, fpr, address))
1413
2254
if not self._pipe.recv():
1414
raise KeyError()
1415
2255
raise KeyError(key_id or fpr)
2256
1416
2257
def __getattribute__(self, name):
1417
2258
if name == '_pipe':
1418
2259
return super(ProxyClient, self).__getattribute__(name)
1421
2262
if data[0] == 'data':
1422
2263
return data[1]
1423
2264
if data[0] == 'function':
2265
1424
2266
def func(*args, **kwargs):
1425
2267
self._pipe.send(('funcall', name, args, kwargs))
1426
2268
return self._pipe.recv()[1]
2269
1427
2270
return func
1428
2271
1429
2272
def __setattr__(self, name, value):
1430
2273
if name == '_pipe':
1431
2274
return super(ProxyClient, self).__setattr__(name, value)
1432
2275
self._pipe.send(('setattr', name, value))
1433
2276
1434
2277
1435
class ClientDBusTransitional(ClientDBus):
1436
__metaclass__ = AlternateDBusNamesMetaclass
1437
1438
1439
2278
class ClientHandler(socketserver.BaseRequestHandler, object):
1440
2279
"""A class to handle client connections.
1441
2280
1442
2281
Instantiated once for each connection to handle it.
1443
2282
Note: This will run in its own forked process."""
1444
2283
1445
2284
def handle(self):
1446
2285
with contextlib.closing(self.server.child_pipe) as child_pipe:
1447
2286
logger.info("TCP connection from: %s",
1448
unicode(self.client_address))
2287
str(self.client_address))
1449
2288
logger.debug("Pipe FD: %d",
1450
2289
self.server.child_pipe.fileno())
1451
1452
session = (gnutls.connection
1453
.ClientSession(self.request,
1454
gnutls.connection
1455
.X509Credentials()))
1456
1457
# Note: gnutls.connection.X509Credentials is really a
1458
# generic GnuTLS certificate credentials object so long as
1459
# no X.509 keys are added to it. Therefore, we can use it
1460
# here despite using OpenPGP certificates.
1461
1462
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1463
# "+AES-256-CBC", "+SHA1",
1464
# "+COMP-NULL", "+CTYPE-OPENPGP",
1465
# "+DHE-DSS"))
2290
2291
session = gnutls.ClientSession(self.request)
2292
2293
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2294
# "+AES-256-CBC", "+SHA1",
2295
# "+COMP-NULL", "+CTYPE-OPENPGP",
2296
# "+DHE-DSS"))
1466
2297
# Use a fallback default, since this MUST be set.
1467
2298
priority = self.server.gnutls_priority
1468
2299
if priority is None:
1469
2300
priority = "NORMAL"
1470
(gnutls.library.functions
1471
.gnutls_priority_set_direct(session._c_object,
1472
priority, None))
1473
2301
gnutls.priority_set_direct(session._c_object,
2302
priority.encode("utf-8"),
2303
None)
2304
1474
2305
# Start communication using the Mandos protocol
1475
2306
# Get protocol number
1476
2307
line = self.request.makefile().readline()
1477
2308
logger.debug("Protocol version: %r", line)
1478
2309
try:
1479
2310
if int(line.strip().split()[0]) > 1:
1480
raise RuntimeError
2311
raise RuntimeError(line)
1481
2312
except (ValueError, IndexError, RuntimeError) as error:
1482
2313
logger.error("Unknown protocol version: %s", error)
1483
2314
return
1484
2315
1485
2316
# Start GnuTLS connection
1486
2317
try:
1487
2318
session.handshake()
1488
except gnutls.errors.GNUTLSError as error:
2319
except gnutls.Error as error:
1489
2320
logger.warning("Handshake failed: %s", error)
1490
2321
# Do not run session.bye() here: the session is not
1491
2322
# established. Just abandon the request.
1492
2323
return
1493
2324
logger.debug("Handshake succeeded")
1494
2325
1495
2326
approval_required = False
1496
2327
try:
1497
try:
1498
fpr = self.fingerprint(self.peer_certificate
1499
(session))
1500
except (TypeError,
1501
gnutls.errors.GNUTLSError) as error:
1502
logger.warning("Bad certificate: %s", error)
1503
return
1504
logger.debug("Fingerprint: %s", fpr)
1505
1506
try:
1507
client = ProxyClient(child_pipe, fpr,
2328
if gnutls.has_rawpk:
2329
fpr = b""
2330
try:
2331
key_id = self.key_id(
2332
self.peer_certificate(session))
2333
except (TypeError, gnutls.Error) as error:
2334
logger.warning("Bad certificate: %s", error)
2335
return
2336
logger.debug("Key ID: %s", key_id)
2337
2338
else:
2339
key_id = b""
2340
try:
2341
fpr = self.fingerprint(
2342
self.peer_certificate(session))
2343
except (TypeError, gnutls.Error) as error:
2344
logger.warning("Bad certificate: %s", error)
2345
return
2346
logger.debug("Fingerprint: %s", fpr)
2347
2348
try:
2349
client = ProxyClient(child_pipe, key_id, fpr,
1508
2350
self.client_address)
1509
2351
except KeyError:
1510
2352
return
1511
1512
if self.server.use_dbus:
1513
# Emit D-Bus signal
1514
client.NewRequest(str(self.client_address))
1515
2353
1516
2354
if client.approval_delay:
1517
2355
delay = client.approval_delay
1518
2356
client.approvals_pending += 1
1519
2357
approval_required = True
1520
2358
1521
2359
while True:
1522
2360
if not client.enabled:
1523
2361
logger.info("Client %s is disabled",
1524
client.name)
2362
client.name)
1525
2363
if self.server.use_dbus:
1526
2364
# Emit D-Bus signal
1527
2365
client.Rejected("Disabled")
1528
2366
return
1529
2367
1530
2368
if client.approved or not client.approval_delay:
1531
#We are approved or approval is disabled
2369
# We are approved or approval is disabled
1532
2370
break
1533
2371
elif client.approved is None:
1534
2372
logger.info("Client %s needs approval",
1536
2374
if self.server.use_dbus:
1537
2375
# Emit D-Bus signal
1538
2376
client.NeedApproval(
1539
client.approval_delay_milliseconds(),
1540
client.approved_by_default)
2377
client.approval_delay.total_seconds()
2378
* 1000, client.approved_by_default)
1541
2379
else:
1542
2380
logger.warning("Client %s was not approved",
1543
2381
client.name)
1545
2383
# Emit D-Bus signal
1546
2384
client.Rejected("Denied")
1547
2385
return
1548
1549
#wait until timeout or approved
2386
2387
# wait until timeout or approved
1550
2388
time = datetime.datetime.now()
1551
2389
client.changedstate.acquire()
1552
(client.changedstate.wait
1553
(float(client.timedelta_to_milliseconds(delay)
1554
/ 1000)))
2390
client.changedstate.wait(delay.total_seconds())
1555
2391
client.changedstate.release()
1556
2392
time2 = datetime.datetime.now()
1557
2393
if (time2 - time) >= delay:
1567
2403
break
1568
2404
else:
1569
2405
delay -= time2 - time
1570
1571
sent_size = 0
1572
while sent_size < len(client.secret):
1573
try:
1574
sent = session.send(client.secret[sent_size:])
1575
except gnutls.errors.GNUTLSError as error:
1576
logger.warning("gnutls send failed")
1577
return
1578
logger.debug("Sent: %d, remaining: %d",
1579
sent, len(client.secret)
1580
- (sent_size + sent))
1581
sent_size += sent
1582
2406
2407
try:
2408
session.send(client.secret)
2409
except gnutls.Error as error:
2410
logger.warning("gnutls send failed",
2411
exc_info=error)
2412
return
2413
1583
2414
logger.info("Sending secret to %s", client.name)
1584
2415
# bump the timeout using extended_timeout
1585
client.checked_ok(client.extended_timeout)
2416
client.bump_timeout(client.extended_timeout)
1586
2417
if self.server.use_dbus:
1587
2418
# Emit D-Bus signal
1588
2419
client.GotSecret()
1589
2420
1590
2421
finally:
1591
2422
if approval_required:
1592
2423
client.approvals_pending -= 1
1593
2424
try:
1594
2425
session.bye()
1595
except gnutls.errors.GNUTLSError as error:
1596
logger.warning("GnuTLS bye failed")
1597
2426
except gnutls.Error as error:
2427
logger.warning("GnuTLS bye failed",
2428
exc_info=error)
2429
1598
2430
@staticmethod
1599
2431
def peer_certificate(session):
1600
"Return the peer's OpenPGP certificate as a bytestring"
1601
# If not an OpenPGP certificate...
1602
if (gnutls.library.functions
1603
.gnutls_certificate_type_get(session._c_object)
1604
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1605
# ...do the normal thing
1606
return session.peer_certificate
2432
"Return the peer's certificate as a bytestring"
2433
try:
2434
cert_type = gnutls.certificate_type_get2(session._c_object,
2435
gnutls.CTYPE_PEERS)
2436
except AttributeError:
2437
cert_type = gnutls.certificate_type_get(session._c_object)
2438
if gnutls.has_rawpk:
2439
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2440
else:
2441
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2442
# If not a valid certificate type...
2443
if cert_type not in valid_cert_types:
2444
logger.info("Cert type %r not in %r", cert_type,
2445
valid_cert_types)
2446
# ...return invalid data
2447
return b""
1607
2448
list_size = ctypes.c_uint(1)
1608
cert_list = (gnutls.library.functions
1609
.gnutls_certificate_get_peers
2449
cert_list = (gnutls.certificate_get_peers
1610
2450
(session._c_object, ctypes.byref(list_size)))
1611
2451
if not bool(cert_list) and list_size.value != 0:
1612
raise gnutls.errors.GNUTLSError("error getting peer"
1613
" certificate")
2452
raise gnutls.Error("error getting peer certificate")
1614
2453
if list_size.value == 0:
1615
2454
return None
1616
2455
cert = cert_list[0]
1617
2456
return ctypes.string_at(cert.data, cert.size)
1618
2457
2458
@staticmethod
2459
def key_id(certificate):
2460
"Convert a certificate bytestring to a hexdigit key ID"
2461
# New GnuTLS "datum" with the public key
2462
datum = gnutls.datum_t(
2463
ctypes.cast(ctypes.c_char_p(certificate),
2464
ctypes.POINTER(ctypes.c_ubyte)),
2465
ctypes.c_uint(len(certificate)))
2466
# XXX all these need to be created in the gnutls "module"
2467
# New empty GnuTLS certificate
2468
pubkey = gnutls.pubkey_t()
2469
gnutls.pubkey_init(ctypes.byref(pubkey))
2470
# Import the raw public key into the certificate
2471
gnutls.pubkey_import(pubkey,
2472
ctypes.byref(datum),
2473
gnutls.X509_FMT_DER)
2474
# New buffer for the key ID
2475
buf = ctypes.create_string_buffer(32)
2476
buf_len = ctypes.c_size_t(len(buf))
2477
# Get the key ID from the raw public key into the buffer
2478
gnutls.pubkey_get_key_id(
2479
pubkey,
2480
gnutls.KEYID_USE_SHA256,
2481
ctypes.cast(ctypes.byref(buf),
2482
ctypes.POINTER(ctypes.c_ubyte)),
2483
ctypes.byref(buf_len))
2484
# Deinit the certificate
2485
gnutls.pubkey_deinit(pubkey)
2486
2487
# Convert the buffer to a Python bytestring
2488
key_id = ctypes.string_at(buf, buf_len.value)
2489
# Convert the bytestring to hexadecimal notation
2490
hex_key_id = binascii.hexlify(key_id).upper()
2491
return hex_key_id
2492
1619
2493
@staticmethod
1620
2494
def fingerprint(openpgp):
1621
2495
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1622
2496
# New GnuTLS "datum" with the OpenPGP public key
1623
datum = (gnutls.library.types
1624
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1625
ctypes.POINTER
1626
(ctypes.c_ubyte)),
1627
ctypes.c_uint(len(openpgp))))
2497
datum = gnutls.datum_t(
2498
ctypes.cast(ctypes.c_char_p(openpgp),
2499
ctypes.POINTER(ctypes.c_ubyte)),
2500
ctypes.c_uint(len(openpgp)))
1628
2501
# New empty GnuTLS certificate
1629
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1630
(gnutls.library.functions
1631
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2502
crt = gnutls.openpgp_crt_t()
2503
gnutls.openpgp_crt_init(ctypes.byref(crt))
1632
2504
# Import the OpenPGP public key into the certificate
1633
(gnutls.library.functions
1634
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1635
gnutls.library.constants
1636
.GNUTLS_OPENPGP_FMT_RAW))
2505
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2506
gnutls.OPENPGP_FMT_RAW)
1637
2507
# Verify the self signature in the key
1638
2508
crtverify = ctypes.c_uint()
1639
(gnutls.library.functions
1640
.gnutls_openpgp_crt_verify_self(crt, 0,
1641
ctypes.byref(crtverify)))
2509
gnutls.openpgp_crt_verify_self(crt, 0,
2510
ctypes.byref(crtverify))
1642
2511
if crtverify.value != 0:
1643
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1644
raise (gnutls.errors.CertificateSecurityError
1645
("Verify failed"))
2512
gnutls.openpgp_crt_deinit(crt)
2513
raise gnutls.CertificateSecurityError(code
2514
=crtverify.value)
1646
2515
# New buffer for the fingerprint
1647
2516
buf = ctypes.create_string_buffer(20)
1648
2517
buf_len = ctypes.c_size_t()
1649
2518
# Get the fingerprint from the certificate into the buffer
1650
(gnutls.library.functions
1651
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1652
ctypes.byref(buf_len)))
2519
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2520
ctypes.byref(buf_len))
1653
2521
# Deinit the certificate
1654
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2522
gnutls.openpgp_crt_deinit(crt)
1655
2523
# Convert the buffer to a Python bytestring
1656
2524
fpr = ctypes.string_at(buf, buf_len.value)
1657
2525
# Convert the bytestring to hexadecimal notation
1659
2527
return hex_fpr
1660
2528
1661
2529
1662
class MultiprocessingMixIn(object):
2530
class MultiprocessingMixIn:
1663
2531
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2532
1664
2533
def sub_process_main(self, request, address):
1665
2534
try:
1666
2535
self.finish_request(request, address)
1667
except:
2536
except Exception:
1668
2537
self.handle_error(request, address)
1669
2538
self.close_request(request)
1670
2539
1671
2540
def process_request(self, request, address):
1672
2541
"""Start a new process to process the request."""
1673
proc = multiprocessing.Process(target = self.sub_process_main,
1674
args = (request,
1675
address))
2542
proc = multiprocessing.Process(target=self.sub_process_main,
2543
args=(request, address))
1676
2544
proc.start()
1677
2545
return proc
1678
2546
1679
2547
1680
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2548
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1681
2549
""" adds a pipe to the MixIn """
2550
1682
2551
def process_request(self, request, client_address):
1683
2552
"""Overrides and wraps the original process_request().
1684
2553
1685
2554
This function creates a new pipe in self.pipe
1686
2555
"""
1687
2556
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1688
2557
1689
2558
proc = MultiprocessingMixIn.process_request(self, request,
1690
2559
client_address)
1691
2560
self.child_pipe.close()
1692
2561
self.add_pipe(parent_pipe, proc)
1693
2562
1694
2563
def add_pipe(self, parent_pipe, proc):
1695
2564
"""Dummy function; override as necessary"""
1696
raise NotImplementedError
2565
raise NotImplementedError()
1697
2566
1698
2567
1699
2568
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1700
socketserver.TCPServer, object):
2569
socketserver.TCPServer):
1701
2570
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1702
2571
1703
2572
Attributes:
1704
2573
enabled: Boolean; whether this server is activated yet
1705
2574
interface: None or a network interface name (string)
1706
2575
use_ipv6: Boolean; to use IPv6 or not
1707
2576
"""
2577
1708
2578
def __init__(self, server_address, RequestHandlerClass,
1709
interface=None, use_ipv6=True):
2579
interface=None,
2580
use_ipv6=True,
2581
socketfd=None):
2582
"""If socketfd is set, use that file descriptor instead of
2583
creating a new one with socket.socket().
2584
"""
1710
2585
self.interface = interface
1711
2586
if use_ipv6:
1712
2587
self.address_family = socket.AF_INET6
2588
if socketfd is not None:
2589
# Save the file descriptor
2590
self.socketfd = socketfd
2591
# Save the original socket.socket() function
2592
self.socket_socket = socket.socket
2593
2594
# To implement --socket, we monkey patch socket.socket.
2595
#
2596
# (When socketserver.TCPServer is a new-style class, we
2597
# could make self.socket into a property instead of monkey
2598
# patching socket.socket.)
2599
#
2600
# Create a one-time-only replacement for socket.socket()
2601
@functools.wraps(socket.socket)
2602
def socket_wrapper(*args, **kwargs):
2603
# Restore original function so subsequent calls are
2604
# not affected.
2605
socket.socket = self.socket_socket
2606
del self.socket_socket
2607
# This time only, return a new socket object from the
2608
# saved file descriptor.
2609
return socket.fromfd(self.socketfd, *args, **kwargs)
2610
# Replace socket.socket() function with wrapper
2611
socket.socket = socket_wrapper
2612
# The socketserver.TCPServer.__init__ will call
2613
# socket.socket(), which might be our replacement,
2614
# socket_wrapper(), if socketfd was set.
1713
2615
socketserver.TCPServer.__init__(self, server_address,
1714
2616
RequestHandlerClass)
2617
1715
2618
def server_bind(self):
1716
2619
"""This overrides the normal server_bind() function
1717
2620
to bind to an interface if one was specified, and also NOT to
1718
2621
bind to an address or port if they were not specified."""
2622
global SO_BINDTODEVICE
1719
2623
if self.interface is not None:
1720
2624
if SO_BINDTODEVICE is None:
1721
logger.error("SO_BINDTODEVICE does not exist;"
1722
" cannot bind to interface %s",
1723
self.interface)
1724
else:
1725
try:
1726
self.socket.setsockopt(socket.SOL_SOCKET,
1727
SO_BINDTODEVICE,
1728
str(self.interface
1729
+ '\0'))
1730
except socket.error as error:
1731
if error[0] == errno.EPERM:
1732
logger.error("No permission to"
1733
" bind to interface %s",
1734
self.interface)
1735
elif error[0] == errno.ENOPROTOOPT:
1736
logger.error("SO_BINDTODEVICE not available;"
1737
" cannot bind to interface %s",
1738
self.interface)
1739
else:
1740
raise
2625
# Fall back to a hard-coded value which seems to be
2626
# common enough.
2627
logger.warning("SO_BINDTODEVICE not found, trying 25")
2628
SO_BINDTODEVICE = 25
2629
try:
2630
self.socket.setsockopt(
2631
socket.SOL_SOCKET, SO_BINDTODEVICE,
2632
(self.interface + "\0").encode("utf-8"))
2633
except socket.error as error:
2634
if error.errno == errno.EPERM:
2635
logger.error("No permission to bind to"
2636
" interface %s", self.interface)
2637
elif error.errno == errno.ENOPROTOOPT:
2638
logger.error("SO_BINDTODEVICE not available;"
2639
" cannot bind to interface %s",
2640
self.interface)
2641
elif error.errno == errno.ENODEV:
2642
logger.error("Interface %s does not exist,"
2643
" cannot bind", self.interface)
2644
else:
2645
raise
1741
2646
# Only bind(2) the socket if we really need to.
1742
2647
if self.server_address[0] or self.server_address[1]:
2648
if self.server_address[1]:
2649
self.allow_reuse_address = True
1743
2650
if not self.server_address[0]:
1744
2651
if self.address_family == socket.AF_INET6:
1745
any_address = "::" # in6addr_any
2652
any_address = "::" # in6addr_any
1746
2653
else:
1747
any_address = socket.INADDR_ANY
2654
any_address = "0.0.0.0" # INADDR_ANY
1748
2655
self.server_address = (any_address,
1749
2656
self.server_address[1])
1750
2657
elif not self.server_address[1]:
1751
self.server_address = (self.server_address[0],
1752
0)
2658
self.server_address = (self.server_address[0], 0)
1753
2659
# if self.interface:
1754
2660
# self.server_address = (self.server_address[0],
1755
2661
# 0, # port
1761
2667
1762
2668
class MandosServer(IPv6_TCPServer):
1763
2669
"""Mandos server.
1764
2670
1765
2671
Attributes:
1766
2672
clients: set of Client objects
1767
2673
gnutls_priority GnuTLS priority string
1768
2674
use_dbus: Boolean; to emit D-Bus signals or not
1769
1770
Assumes a gobject.MainLoop event loop.
2675
2676
Assumes a GLib.MainLoop event loop.
1771
2677
"""
2678
1772
2679
def __init__(self, server_address, RequestHandlerClass,
1773
interface=None, use_ipv6=True, clients=None,
1774
gnutls_priority=None, use_dbus=True):
2680
interface=None,
2681
use_ipv6=True,
2682
clients=None,
2683
gnutls_priority=None,
2684
use_dbus=True,
2685
socketfd=None):
1775
2686
self.enabled = False
1776
2687
self.clients = clients
1777
2688
if self.clients is None:
1780
2691
self.gnutls_priority = gnutls_priority
1781
2692
IPv6_TCPServer.__init__(self, server_address,
1782
2693
RequestHandlerClass,
1783
interface = interface,
1784
use_ipv6 = use_ipv6)
2694
interface=interface,
2695
use_ipv6=use_ipv6,
2696
socketfd=socketfd)
2697
1785
2698
def server_activate(self):
1786
2699
if self.enabled:
1787
2700
return socketserver.TCPServer.server_activate(self)
1788
2701
1789
2702
def enable(self):
1790
2703
self.enabled = True
1791
2704
1792
2705
def add_pipe(self, parent_pipe, proc):
1793
2706
# Call "handle_ipc" for both data and EOF events
1794
gobject.io_add_watch(parent_pipe.fileno(),
1795
gobject.IO_IN | gobject.IO_HUP,
1796
functools.partial(self.handle_ipc,
1797
parent_pipe =
1798
parent_pipe,
1799
proc = proc))
1800
1801
def handle_ipc(self, source, condition, parent_pipe=None,
1802
proc = None, client_object=None):
1803
condition_names = {
1804
gobject.IO_IN: "IN", # There is data to read.
1805
gobject.IO_OUT: "OUT", # Data can be written (without
1806
# blocking).
1807
gobject.IO_PRI: "PRI", # There is urgent data to read.
1808
gobject.IO_ERR: "ERR", # Error condition.
1809
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1810
# broken, usually for pipes and
1811
# sockets).
1812
}
1813
conditions_string = ' | '.join(name
1814
for cond, name in
1815
condition_names.iteritems()
1816
if cond & condition)
2707
GLib.io_add_watch(
2708
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2709
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2710
functools.partial(self.handle_ipc,
2711
parent_pipe=parent_pipe,
2712
proc=proc))
2713
2714
def handle_ipc(self, source, condition,
2715
parent_pipe=None,
2716
proc=None,
2717
client_object=None):
1817
2718
# error, or the other end of multiprocessing.Pipe has closed
1818
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2719
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1819
2720
# Wait for other process to exit
1820
2721
proc.join()
1821
2722
return False
1822
2723
1823
2724
# Read a request from the child
1824
2725
request = parent_pipe.recv()
1825
2726
command = request[0]
1826
2727
1827
2728
if command == 'init':
1828
fpr = request[1]
1829
address = request[2]
1830
1831
for c in self.clients.itervalues():
1832
if c.fingerprint == fpr:
2729
key_id = request[1].decode("ascii")
2730
fpr = request[2].decode("ascii")
2731
address = request[3]
2732
2733
for c in self.clients.values():
2734
if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"
2735
"27AE41E4649B934CA495991B7852B855"):
2736
continue
2737
if key_id and c.key_id == key_id:
2738
client = c
2739
break
2740
if fpr and c.fingerprint == fpr:
1833
2741
client = c
1834
2742
break
1835
2743
else:
1836
logger.info("Client not found for fingerprint: %s, ad"
1837
"dress: %s", fpr, address)
2744
logger.info("Client not found for key ID: %s, address"
2745
": %s", key_id or fpr, address)
1838
2746
if self.use_dbus:
1839
2747
# Emit D-Bus signal
1840
mandos_dbus_service.ClientNotFound(fpr,
2748
mandos_dbus_service.ClientNotFound(key_id or fpr,
1841
2749
address[0])
1842
2750
parent_pipe.send(False)
1843
2751
return False
1844
1845
gobject.io_add_watch(parent_pipe.fileno(),
1846
gobject.IO_IN | gobject.IO_HUP,
1847
functools.partial(self.handle_ipc,
1848
parent_pipe =
1849
parent_pipe,
1850
proc = proc,
1851
client_object =
1852
client))
2752
2753
GLib.io_add_watch(
2754
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2755
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2756
functools.partial(self.handle_ipc,
2757
parent_pipe=parent_pipe,
2758
proc=proc,
2759
client_object=client))
1853
2760
parent_pipe.send(True)
1854
2761
# remove the old hook in favor of the new above hook on
1855
2762
# same fileno
1858
2765
funcname = request[1]
1859
2766
args = request[2]
1860
2767
kwargs = request[3]
1861
2768
1862
2769
parent_pipe.send(('data', getattr(client_object,
1863
2770
funcname)(*args,
1864
**kwargs)))
1865
2771
**kwargs)))
2772
1866
2773
if command == 'getattr':
1867
2774
attrname = request[1]
1868
if callable(client_object.__getattribute__(attrname)):
1869
parent_pipe.send(('function',))
2775
if isinstance(client_object.__getattribute__(attrname),
2776
collections.abc.Callable):
2777
parent_pipe.send(('function', ))
1870
2778
else:
1871
parent_pipe.send(('data', client_object
1872
.__getattribute__(attrname)))
1873
2779
parent_pipe.send((
2780
'data', client_object.__getattribute__(attrname)))
2781
1874
2782
if command == 'setattr':
1875
2783
attrname = request[1]
1876
2784
value = request[2]
1877
2785
setattr(client_object, attrname, value)
1878
2786
1879
2787
return True
1880
2788
1881
2789
2790
def rfc3339_duration_to_delta(duration):
2791
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2792
2793
>>> timedelta = datetime.timedelta
2794
>>> rfc3339_duration_to_delta("P7D") == timedelta(7)
2795
True
2796
>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)
2797
True
2798
>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)
2799
True
2800
>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)
2801
True
2802
>>> rfc3339_duration_to_delta("P1W") == timedelta(7)
2803
True
2804
>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)
2805
True
2806
>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)
2807
True
2808
>>> del timedelta
2809
"""
2810
2811
# Parsing an RFC 3339 duration with regular expressions is not
2812
# possible - there would have to be multiple places for the same
2813
# values, like seconds. The current code, while more esoteric, is
2814
# cleaner without depending on a parsing library. If Python had a
2815
# built-in library for parsing we would use it, but we'd like to
2816
# avoid excessive use of external libraries.
2817
2818
# New type for defining tokens, syntax, and semantics all-in-one
2819
Token = collections.namedtuple("Token", (
2820
"regexp", # To match token; if "value" is not None, must have
2821
# a "group" containing digits
2822
"value", # datetime.timedelta or None
2823
"followers")) # Tokens valid after this token
2824
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2825
# the "duration" ABNF definition in RFC 3339, Appendix A.
2826
token_end = Token(re.compile(r"$"), None, frozenset())
2827
token_second = Token(re.compile(r"(\d+)S"),
2828
datetime.timedelta(seconds=1),
2829
frozenset((token_end, )))
2830
token_minute = Token(re.compile(r"(\d+)M"),
2831
datetime.timedelta(minutes=1),
2832
frozenset((token_second, token_end)))
2833
token_hour = Token(re.compile(r"(\d+)H"),
2834
datetime.timedelta(hours=1),
2835
frozenset((token_minute, token_end)))
2836
token_time = Token(re.compile(r"T"),
2837
None,
2838
frozenset((token_hour, token_minute,
2839
token_second)))
2840
token_day = Token(re.compile(r"(\d+)D"),
2841
datetime.timedelta(days=1),
2842
frozenset((token_time, token_end)))
2843
token_month = Token(re.compile(r"(\d+)M"),
2844
datetime.timedelta(weeks=4),
2845
frozenset((token_day, token_end)))
2846
token_year = Token(re.compile(r"(\d+)Y"),
2847
datetime.timedelta(weeks=52),
2848
frozenset((token_month, token_end)))
2849
token_week = Token(re.compile(r"(\d+)W"),
2850
datetime.timedelta(weeks=1),
2851
frozenset((token_end, )))
2852
token_duration = Token(re.compile(r"P"), None,
2853
frozenset((token_year, token_month,
2854
token_day, token_time,
2855
token_week)))
2856
# Define starting values:
2857
# Value so far
2858
value = datetime.timedelta()
2859
found_token = None
2860
# Following valid tokens
2861
followers = frozenset((token_duration, ))
2862
# String left to parse
2863
s = duration
2864
# Loop until end token is found
2865
while found_token is not token_end:
2866
# Search for any currently valid tokens
2867
for token in followers:
2868
match = token.regexp.match(s)
2869
if match is not None:
2870
# Token found
2871
if token.value is not None:
2872
# Value found, parse digits
2873
factor = int(match.group(1), 10)
2874
# Add to value so far
2875
value += factor * token.value
2876
# Strip token from string
2877
s = token.regexp.sub("", s, 1)
2878
# Go to found token
2879
found_token = token
2880
# Set valid next tokens
2881
followers = found_token.followers
2882
break
2883
else:
2884
# No currently valid tokens were found
2885
raise ValueError("Invalid RFC 3339 duration: {!r}"
2886
.format(duration))
2887
# End token found
2888
return value
2889
2890
1882
2891
def string_to_delta(interval):
1883
2892
"""Parse a string and return a datetime.timedelta
1884
1885
>>> string_to_delta('7d')
1886
datetime.timedelta(7)
1887
>>> string_to_delta('60s')
1888
datetime.timedelta(0, 60)
1889
>>> string_to_delta('60m')
1890
datetime.timedelta(0, 3600)
1891
>>> string_to_delta('24h')
1892
datetime.timedelta(1)
1893
>>> string_to_delta('1w')
1894
datetime.timedelta(7)
1895
>>> string_to_delta('5m 30s')
1896
datetime.timedelta(0, 330)
2893
2894
>>> string_to_delta('7d') == datetime.timedelta(7)
2895
True
2896
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2897
True
2898
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2899
True
2900
>>> string_to_delta('24h') == datetime.timedelta(1)
2901
True
2902
>>> string_to_delta('1w') == datetime.timedelta(7)
2903
True
2904
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2905
True
1897
2906
"""
2907
2908
try:
2909
return rfc3339_duration_to_delta(interval)
2910
except ValueError:
2911
pass
2912
1898
2913
timevalue = datetime.timedelta(0)
1899
2914
for s in interval.split():
1900
2915
try:
1901
suffix = unicode(s[-1])
2916
suffix = s[-1]
1902
2917
value = int(s[:-1])
1903
2918
if suffix == "d":
1904
2919
delta = datetime.timedelta(value)
1911
2926
elif suffix == "w":
1912
2927
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1913
2928
else:
1914
raise ValueError("Unknown suffix %r" % suffix)
1915
except (ValueError, IndexError) as e:
2929
raise ValueError("Unknown suffix {!r}".format(suffix))
2930
except IndexError as e:
1916
2931
raise ValueError(*(e.args))
1917
2932
timevalue += delta
1918
2933
return timevalue
1919
2934
1920
2935
1921
def daemon(nochdir = False, noclose = False):
2936
def daemon(nochdir=False, noclose=False):
1922
2937
"""See daemon(3). Standard BSD Unix function.
1923
2938
1924
2939
This should really exist as os.daemon, but it doesn't (yet)."""
1925
2940
if os.fork():
1926
2941
sys.exit()
1931
2946
sys.exit()
1932
2947
if not noclose:
1933
2948
# Close all standard open file descriptors
1934
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2949
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1935
2950
if not stat.S_ISCHR(os.fstat(null).st_mode):
1936
2951
raise OSError(errno.ENODEV,
1937
"%s not a character device"
1938
% os.path.devnull)
2952
"{} not a character device"
2953
.format(os.devnull))
1939
2954
os.dup2(null, sys.stdin.fileno())
1940
2955
os.dup2(null, sys.stdout.fileno())
1941
2956
os.dup2(null, sys.stderr.fileno())
1944
2959
1945
2960
1946
2961
def main():
1947
2962
1948
2963
##################################################################
1949
2964
# Parsing of options, both command line and config file
1950
2965
1951
2966
parser = argparse.ArgumentParser()
1952
2967
parser.add_argument("-v", "--version", action="version",
1953
version = "%%(prog)s %s" % version,
2968
version="%(prog)s {}".format(version),
1954
2969
help="show version number and exit")
1955
2970
parser.add_argument("-i", "--interface", metavar="IF",
1956
2971
help="Bind to interface IF")
1962
2977
help="Run self-test")
1963
2978
parser.add_argument("--debug", action="store_true",
1964
2979
help="Debug mode; run in foreground and log"
1965
" to terminal")
2980
" to terminal", default=None)
1966
2981
parser.add_argument("--debuglevel", metavar="LEVEL",
1967
2982
help="Debug level for stdout output")
1968
2983
parser.add_argument("--priority", help="GnuTLS"
1975
2990
" files")
1976
2991
parser.add_argument("--no-dbus", action="store_false",
1977
2992
dest="use_dbus", help="Do not provide D-Bus"
1978
" system bus interface")
2993
" system bus interface", default=None)
1979
2994
parser.add_argument("--no-ipv6", action="store_false",
1980
dest="use_ipv6", help="Do not use IPv6")
2995
dest="use_ipv6", help="Do not use IPv6",
2996
default=None)
1981
2997
parser.add_argument("--no-restore", action="store_false",
1982
2998
dest="restore", help="Do not restore stored"
1983
" state")
2999
" state", default=None)
3000
parser.add_argument("--socket", type=int,
3001
help="Specify a file descriptor to a network"
3002
" socket to use instead of creating one")
1984
3003
parser.add_argument("--statedir", metavar="DIR",
1985
3004
help="Directory to save/restore state in")
1986
3005
parser.add_argument("--foreground", action="store_true",
3006
help="Run in foreground", default=None)
3007
parser.add_argument("--no-zeroconf", action="store_false",
3008
dest="zeroconf", help="Do not use Zeroconf",
3009
default=None)
3010
1987
3011
options = parser.parse_args()
1988
1989
if options.check:
1990
import doctest
1991
doctest.testmod()
1992
sys.exit()
1993
3012
1994
3013
# Default values for config file for server-global settings
1995
server_defaults = { "interface": "",
1996
"address": "",
1997
"port": "",
1998
"debug": "False",
1999
"priority":
2000
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2001
"servicename": "Mandos",
2002
"use_dbus": "True",
2003
"use_ipv6": "True",
2004
"debuglevel": "",
2005
"restore": "True",
2006
"statedir": "/var/lib/mandos"
2007
}
2008
3014
if gnutls.has_rawpk:
3015
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3016
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3017
else:
3018
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3019
":+SIGN-DSA-SHA256")
3020
server_defaults = {"interface": "",
3021
"address": "",
3022
"port": "",
3023
"debug": "False",
3024
"priority": priority,
3025
"servicename": "Mandos",
3026
"use_dbus": "True",
3027
"use_ipv6": "True",
3028
"debuglevel": "",
3029
"restore": "True",
3030
"socket": "",
3031
"statedir": "/var/lib/mandos",
3032
"foreground": "False",
3033
"zeroconf": "True",
3034
}
3035
del priority
3036
2009
3037
# Parse config file for server-global settings
2010
server_config = configparser.SafeConfigParser(server_defaults)
3038
server_config = configparser.ConfigParser(server_defaults)
2011
3039
del server_defaults
2012
server_config.read(os.path.join(options.configdir,
2013
"mandos.conf"))
2014
# Convert the SafeConfigParser object to a dict
3040
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3041
# Convert the ConfigParser object to a dict
2015
3042
server_settings = server_config.defaults()
2016
3043
# Use the appropriate methods on the non-string config options
2017
for option in ("debug", "use_dbus", "use_ipv6"):
3044
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3045
"foreground", "zeroconf"):
2018
3046
server_settings[option] = server_config.getboolean("DEFAULT",
2019
3047
option)
2020
3048
if server_settings["port"]:
2021
3049
server_settings["port"] = server_config.getint("DEFAULT",
2022
3050
"port")
3051
if server_settings["socket"]:
3052
server_settings["socket"] = server_config.getint("DEFAULT",
3053
"socket")
3054
# Later, stdin will, and stdout and stderr might, be dup'ed
3055
# over with an opened os.devnull. But we don't want this to
3056
# happen with a supplied network socket.
3057
if 0 <= server_settings["socket"] <= 2:
3058
server_settings["socket"] = os.dup(server_settings
3059
["socket"])
2023
3060
del server_config
2024
3061
2025
3062
# Override the settings from the config file with command line
2026
3063
# options, if set.
2027
3064
for option in ("interface", "address", "port", "debug",
2028
"priority", "servicename", "configdir",
2029
"use_dbus", "use_ipv6", "debuglevel", "restore",
2030
"statedir"):
3065
"priority", "servicename", "configdir", "use_dbus",
3066
"use_ipv6", "debuglevel", "restore", "statedir",
3067
"socket", "foreground", "zeroconf"):
2031
3068
value = getattr(options, option)
2032
3069
if value is not None:
2033
3070
server_settings[option] = value
2034
3071
del options
2035
3072
# Force all strings to be unicode
2036
3073
for option in server_settings.keys():
2037
if type(server_settings[option]) is str:
2038
server_settings[option] = unicode(server_settings[option])
3074
if isinstance(server_settings[option], bytes):
3075
server_settings[option] = (server_settings[option]
3076
.decode("utf-8"))
3077
# Force all boolean options to be boolean
3078
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3079
"foreground", "zeroconf"):
3080
server_settings[option] = bool(server_settings[option])
3081
# Debug implies foreground
3082
if server_settings["debug"]:
3083
server_settings["foreground"] = True
2039
3084
# Now we have our good server settings in "server_settings"
2040
3085
2041
3086
##################################################################
2042
3087
3088
if (not server_settings["zeroconf"]
3089
and not (server_settings["port"]
3090
or server_settings["socket"] != "")):
3091
parser.error("Needs port or socket to work without Zeroconf")
3092
2043
3093
# For convenience
2044
3094
debug = server_settings["debug"]
2045
3095
debuglevel = server_settings["debuglevel"]
2047
3097
use_ipv6 = server_settings["use_ipv6"]
2048
3098
stored_state_path = os.path.join(server_settings["statedir"],
2049
3099
stored_state_file)
2050
3100
foreground = server_settings["foreground"]
3101
zeroconf = server_settings["zeroconf"]
3102
2051
3103
if debug:
2052
initlogger(logging.DEBUG)
3104
initlogger(debug, logging.DEBUG)
2053
3105
else:
2054
3106
if not debuglevel:
2055
initlogger()
3107
initlogger(debug)
2056
3108
else:
2057
3109
level = getattr(logging, debuglevel.upper())
2058
initlogger(level)
2059
3110
initlogger(debug, level)
3111
2060
3112
if server_settings["servicename"] != "Mandos":
2061
syslogger.setFormatter(logging.Formatter
2062
('Mandos (%s) [%%(process)d]:'
2063
' %%(levelname)s: %%(message)s'
2064
% server_settings["servicename"]))
2065
3113
syslogger.setFormatter(
3114
logging.Formatter('Mandos ({}) [%(process)d]:'
3115
' %(levelname)s: %(message)s'.format(
3116
server_settings["servicename"])))
3117
2066
3118
# Parse config file with clients
2067
client_defaults = { "timeout": "5m",
2068
"extended_timeout": "15m",
2069
"interval": "2m",
2070
"checker": "fping -q -- %%(host)s",
2071
"host": "",
2072
"approval_delay": "0s",
2073
"approval_duration": "1s",
2074
}
2075
client_config = configparser.SafeConfigParser(client_defaults)
3119
client_config = configparser.ConfigParser(Client.client_defaults)
2076
3120
client_config.read(os.path.join(server_settings["configdir"],
2077
3121
"clients.conf"))
2078
3122
2079
3123
global mandos_dbus_service
2080
3124
mandos_dbus_service = None
2081
2082
tcp_server = MandosServer((server_settings["address"],
2083
server_settings["port"]),
2084
ClientHandler,
2085
interface=(server_settings["interface"]
2086
or None),
2087
use_ipv6=use_ipv6,
2088
gnutls_priority=
2089
server_settings["priority"],
2090
use_dbus=use_dbus)
2091
if not debug:
2092
pidfilename = "/var/run/mandos.pid"
2093
try:
2094
pidfile = open(pidfilename, "w")
2095
except IOError:
2096
logger.error("Could not open file %r", pidfilename)
2097
2098
try:
2099
uid = pwd.getpwnam("_mandos").pw_uid
2100
gid = pwd.getpwnam("_mandos").pw_gid
2101
except KeyError:
2102
try:
2103
uid = pwd.getpwnam("mandos").pw_uid
2104
gid = pwd.getpwnam("mandos").pw_gid
3125
3126
socketfd = None
3127
if server_settings["socket"] != "":
3128
socketfd = server_settings["socket"]
3129
tcp_server = MandosServer(
3130
(server_settings["address"], server_settings["port"]),
3131
ClientHandler,
3132
interface=(server_settings["interface"] or None),
3133
use_ipv6=use_ipv6,
3134
gnutls_priority=server_settings["priority"],
3135
use_dbus=use_dbus,
3136
socketfd=socketfd)
3137
if not foreground:
3138
pidfilename = "/run/mandos.pid"
3139
if not os.path.isdir("/run/."):
3140
pidfilename = "/var/run/mandos.pid"
3141
pidfile = None
3142
try:
3143
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3144
except IOError as e:
3145
logger.error("Could not open file %r", pidfilename,
3146
exc_info=e)
3147
3148
for name, group in (("_mandos", "_mandos"),
3149
("mandos", "mandos"),
3150
("nobody", "nogroup")):
3151
try:
3152
uid = pwd.getpwnam(name).pw_uid
3153
gid = pwd.getpwnam(group).pw_gid
3154
break
2105
3155
except KeyError:
2106
try:
2107
uid = pwd.getpwnam("nobody").pw_uid
2108
gid = pwd.getpwnam("nobody").pw_gid
2109
except KeyError:
2110
uid = 65534
2111
gid = 65534
3156
continue
3157
else:
3158
uid = 65534
3159
gid = 65534
2112
3160
try:
2113
3161
os.setgid(gid)
2114
3162
os.setuid(uid)
3163
if debug:
3164
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3165
gid))
2115
3166
except OSError as error:
2116
if error[0] != errno.EPERM:
2117
raise error
2118
3167
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3168
.format(uid, gid, os.strerror(error.errno)))
3169
if error.errno != errno.EPERM:
3170
raise
3171
2119
3172
if debug:
2120
3173
# Enable all possible GnuTLS debugging
2121
3174
2122
3175
# "Use a log level over 10 to enable all debugging options."
2123
3176
# - GnuTLS manual
2124
gnutls.library.functions.gnutls_global_set_log_level(11)
2125
2126
@gnutls.library.types.gnutls_log_func
3177
gnutls.global_set_log_level(11)
3178
3179
@gnutls.log_func
2127
3180
def debug_gnutls(level, string):
2128
3181
logger.debug("GnuTLS: %s", string[:-1])
2129
2130
(gnutls.library.functions
2131
.gnutls_global_set_log_function(debug_gnutls))
2132
3182
3183
gnutls.global_set_log_function(debug_gnutls)
3184
2133
3185
# Redirect stdin so all checkers get /dev/null
2134
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3186
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2135
3187
os.dup2(null, sys.stdin.fileno())
2136
3188
if null > 2:
2137
3189
os.close(null)
2138
else:
2139
# No console logging
2140
logger.removeHandler(console)
2141
3190
2142
3191
# Need to fork before connecting to D-Bus
2143
if not debug:
3192
if not foreground:
2144
3193
# Close all input and output, do double fork, etc.
2145
3194
daemon()
2146
3195
3196
if gi.version_info < (3, 10, 2):
3197
# multiprocessing will use threads, so before we use GLib we
3198
# need to inform GLib that threads will be used.
3199
GLib.threads_init()
3200
2147
3201
global main_loop
2148
3202
# From the Avahi example code
2149
DBusGMainLoop(set_as_default=True )
2150
main_loop = gobject.MainLoop()
3203
DBusGMainLoop(set_as_default=True)
3204
main_loop = GLib.MainLoop()
2151
3205
bus = dbus.SystemBus()
2152
3206
# End of Avahi example code
2153
3207
if use_dbus:
2154
3208
try:
2155
3209
bus_name = dbus.service.BusName("se.recompile.Mandos",
2156
bus, do_not_queue=True)
2157
old_bus_name = (dbus.service.BusName
2158
("se.bsnet.fukt.Mandos", bus,
2159
do_not_queue=True))
2160
except dbus.exceptions.NameExistsException as e:
2161
logger.error(unicode(e) + ", disabling D-Bus")
3210
bus,
3211
do_not_queue=True)
3212
old_bus_name = dbus.service.BusName(
3213
"se.bsnet.fukt.Mandos", bus,
3214
do_not_queue=True)
3215
except dbus.exceptions.DBusException as e:
3216
logger.error("Disabling D-Bus:", exc_info=e)
2162
3217
use_dbus = False
2163
3218
server_settings["use_dbus"] = False
2164
3219
tcp_server.use_dbus = False
2165
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2166
service = AvahiServiceToSyslog(name =
2167
server_settings["servicename"],
2168
servicetype = "_mandos._tcp",
2169
protocol = protocol, bus = bus)
2170
if server_settings["interface"]:
2171
service.interface = (if_nametoindex
2172
(str(server_settings["interface"])))
2173
3220
if zeroconf:
3221
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3222
service = AvahiServiceToSyslog(
3223
name=server_settings["servicename"],
3224
servicetype="_mandos._tcp",
3225
protocol=protocol,
3226
bus=bus)
3227
if server_settings["interface"]:
3228
service.interface = if_nametoindex(
3229
server_settings["interface"].encode("utf-8"))
3230
2174
3231
global multiprocessing_manager
2175
3232
multiprocessing_manager = multiprocessing.Manager()
2176
3233
2177
3234
client_class = Client
2178
3235
if use_dbus:
2179
client_class = functools.partial(ClientDBusTransitional,
2180
bus = bus)
2181
2182
special_settings = {
2183
# Some settings need to be accessd by special methods;
2184
# booleans need .getboolean(), etc. Here is a list of them:
2185
"approved_by_default":
2186
lambda section:
2187
client_config.getboolean(section, "approved_by_default"),
2188
"enabled":
2189
lambda section:
2190
client_config.getboolean(section, "enabled"),
2191
}
2192
# Construct a new dict of client settings of this form:
2193
# { client_name: {setting_name: value, ...}, ...}
2194
# with exceptions for any special settings as defined above
2195
client_settings = dict((clientname,
2196
dict((setting,
2197
(value
2198
if setting not in special_settings
2199
else special_settings[setting]
2200
(clientname)))
2201
for setting, value in
2202
client_config.items(clientname)))
2203
for clientname in client_config.sections())
2204
3236
client_class = functools.partial(ClientDBus, bus=bus)
3237
3238
client_settings = Client.config_parser(client_config)
2205
3239
old_client_settings = {}
2206
clients_data = []
2207
3240
clients_data = {}
3241
3242
# This is used to redirect stdout and stderr for checker processes
3243
global wnull
3244
wnull = open(os.devnull, "w") # A writable /dev/null
3245
# Only used if server is running in foreground but not in debug
3246
# mode
3247
if debug or not foreground:
3248
wnull.close()
3249
2208
3250
# Get client data and settings from last running state.
2209
3251
if server_settings["restore"]:
2210
3252
try:
2211
3253
with open(stored_state_path, "rb") as stored_state:
2212
clients_data, old_client_settings = (pickle.load
2213
(stored_state))
3254
if sys.version_info.major == 2:
3255
clients_data, old_client_settings = pickle.load(
3256
stored_state)
3257
else:
3258
bytes_clients_data, bytes_old_client_settings = (
3259
pickle.load(stored_state, encoding="bytes"))
3260
# Fix bytes to strings
3261
# clients_data
3262
# .keys()
3263
clients_data = {(key.decode("utf-8")
3264
if isinstance(key, bytes)
3265
else key): value
3266
for key, value in
3267
bytes_clients_data.items()}
3268
del bytes_clients_data
3269
for key in clients_data:
3270
value = {(k.decode("utf-8")
3271
if isinstance(k, bytes) else k): v
3272
for k, v in
3273
clients_data[key].items()}
3274
clients_data[key] = value
3275
# .client_structure
3276
value["client_structure"] = [
3277
(s.decode("utf-8")
3278
if isinstance(s, bytes)
3279
else s) for s in
3280
value["client_structure"]]
3281
# .name, .host, and .checker_command
3282
for k in ("name", "host", "checker_command"):
3283
if isinstance(value[k], bytes):
3284
value[k] = value[k].decode("utf-8")
3285
if "key_id" not in value:
3286
value["key_id"] = ""
3287
elif "fingerprint" not in value:
3288
value["fingerprint"] = ""
3289
# old_client_settings
3290
# .keys()
3291
old_client_settings = {
3292
(key.decode("utf-8")
3293
if isinstance(key, bytes)
3294
else key): value
3295
for key, value in
3296
bytes_old_client_settings.items()}
3297
del bytes_old_client_settings
3298
# .host and .checker_command
3299
for value in old_client_settings.values():
3300
for attribute in ("host", "checker_command"):
3301
if isinstance(value[attribute], bytes):
3302
value[attribute] = (value[attribute]
3303
.decode("utf-8"))
2214
3304
os.remove(stored_state_path)
2215
3305
except IOError as e:
2216
logger.warning("Could not load persistent state: {0}"
2217
.format(e))
2218
if e.errno != errno.ENOENT:
3306
if e.errno == errno.ENOENT:
3307
logger.warning("Could not load persistent state:"
3308
" {}".format(os.strerror(e.errno)))
3309
else:
3310
logger.critical("Could not load persistent state:",
3311
exc_info=e)
2219
3312
raise
2220
2221
with Crypto() as crypt:
2222
for client in clients_data:
2223
client_name = client["name"]
2224
3313
except EOFError as e:
3314
logger.warning("Could not load persistent state: "
3315
"EOFError:",
3316
exc_info=e)
3317
3318
with PGPEngine() as pgp:
3319
for client_name, client in clients_data.items():
3320
# Skip removed clients
3321
if client_name not in client_settings:
3322
continue
3323
2225
3324
# Decide which value to use after restoring saved state.
2226
3325
# We have three different values: Old config file,
2227
3326
# new config file, and saved state.
2232
3331
# For each value in new config, check if it
2233
3332
# differs from the old config value (Except for
2234
3333
# the "secret" attribute)
2235
if (name != "secret" and
2236
value != old_client_settings[client_name]
2237
[name]):
2238
setattr(client, name, value)
3334
if (name != "secret"
3335
and (value !=
3336
old_client_settings[client_name][name])):
3337
client[name] = value
2239
3338
except KeyError:
2240
3339
pass
2241
3340
2242
3341
# Clients who has passed its expire date can still be
2243
# enabled if its last checker was sucessful. Clients
2244
# whose checker failed before we stored its state is
2245
# assumed to have failed all checkers during downtime.
2246
if client["enabled"] and client["last_checked_ok"]:
2247
if ((datetime.datetime.utcnow()
2248
- client["last_checked_ok"])
2249
> client["interval"]):
2250
if client["last_checker_status"] != 0:
3342
# enabled if its last checker was successful. A Client
3343
# whose checker succeeded before we stored its state is
3344
# assumed to have successfully run all checkers during
3345
# downtime.
3346
if client["enabled"]:
3347
if datetime.datetime.utcnow() >= client["expires"]:
3348
if not client["last_checked_ok"]:
3349
logger.warning(
3350
"disabling client {} - Client never "
3351
"performed a successful checker".format(
3352
client_name))
3353
client["enabled"] = False
3354
elif client["last_checker_status"] != 0:
3355
logger.warning(
3356
"disabling client {} - Client last"
3357
" checker failed with error code"
3358
" {}".format(
3359
client_name,
3360
client["last_checker_status"]))
2251
3361
client["enabled"] = False
2252
3362
else:
2253
client["expires"] = (datetime.datetime
2254
.utcnow()
2255
+ client["timeout"])
2256
2257
client["changedstate"] = (multiprocessing_manager
2258
.Condition
2259
(multiprocessing_manager
2260
.Lock()))
2261
if use_dbus:
2262
new_client = (ClientDBusTransitional.__new__
2263
(ClientDBusTransitional))
2264
tcp_server.clients[client_name] = new_client
2265
new_client.bus = bus
2266
for name, value in client.iteritems():
2267
setattr(new_client, name, value)
2268
client_object_name = unicode(client_name).translate(
2269
{ord("."): ord("_"),
2270
ord("-"): ord("_")})
2271
new_client.dbus_object_path = (dbus.ObjectPath
2272
("/clients/"
2273
+ client_object_name))
2274
DBusObjectWithProperties.__init__(new_client,
2275
new_client.bus,
2276
new_client
2277
.dbus_object_path)
2278
else:
2279
tcp_server.clients[client_name] = (Client.__new__
2280
(Client))
2281
for name, value in client.iteritems():
2282
setattr(tcp_server.clients[client_name],
2283
name, value)
2284
3363
client["expires"] = (
3364
datetime.datetime.utcnow()
3365
+ client["timeout"])
3366
logger.debug("Last checker succeeded,"
3367
" keeping {} enabled".format(
3368
client_name))
2285
3369
try:
2286
tcp_server.clients[client_name].secret = (
2287
crypt.decrypt(tcp_server.clients[client_name]
2288
.encrypted_secret,
2289
client_settings[client_name]
2290
["secret"]))
2291
except CryptoError:
3370
client["secret"] = pgp.decrypt(
3371
client["encrypted_secret"],
3372
client_settings[client_name]["secret"])
3373
except PGPError:
2292
3374
# If decryption fails, we use secret from new settings
2293
tcp_server.clients[client_name].secret = (
2294
client_settings[client_name]["secret"])
2295
2296
# Create/remove clients based on new changes made to config
2297
for clientname in set(old_client_settings) - set(client_settings):
2298
del tcp_server.clients[clientname]
2299
for clientname in set(client_settings) - set(old_client_settings):
2300
tcp_server.clients[clientname] = (client_class(name
2301
= clientname,
2302
config =
2303
client_settings
2304
[clientname]))
2305
3375
logger.debug("Failed to decrypt {} old secret".format(
3376
client_name))
3377
client["secret"] = (client_settings[client_name]
3378
["secret"])
3379
3380
# Add/remove clients based on new changes made to config
3381
for client_name in (set(old_client_settings)
3382
- set(client_settings)):
3383
del clients_data[client_name]
3384
for client_name in (set(client_settings)
3385
- set(old_client_settings)):
3386
clients_data[client_name] = client_settings[client_name]
3387
3388
# Create all client objects
3389
for client_name, client in clients_data.items():
3390
tcp_server.clients[client_name] = client_class(
3391
name=client_name,
3392
settings=client,
3393
server_settings=server_settings)
3394
2306
3395
if not tcp_server.clients:
2307
3396
logger.warning("No clients defined")
2308
2309
if not debug:
2310
try:
2311
with pidfile:
2312
pid = os.getpid()
2313
pidfile.write(str(pid) + "\n".encode("utf-8"))
2314
del pidfile
2315
except IOError:
2316
logger.error("Could not write to file %r with PID %d",
2317
pidfilename, pid)
2318
except NameError:
2319
# "pidfile" was never created
2320
pass
3397
3398
if not foreground:
3399
if pidfile is not None:
3400
pid = os.getpid()
3401
try:
3402
with pidfile:
3403
print(pid, file=pidfile)
3404
except IOError:
3405
logger.error("Could not write to file %r with PID %d",
3406
pidfilename, pid)
3407
del pidfile
2321
3408
del pidfilename
2322
2323
signal.signal(signal.SIGINT, signal.SIG_IGN)
2324
2325
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2326
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2327
3409
3410
for termsig in (signal.SIGHUP, signal.SIGTERM):
3411
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3412
lambda: main_loop.quit() and False)
3413
2328
3414
if use_dbus:
2329
class MandosDBusService(dbus.service.Object):
3415
3416
@alternate_dbus_interfaces(
3417
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3418
class MandosDBusService(DBusObjectWithObjectManager):
2330
3419
"""A D-Bus proxy object"""
3420
2331
3421
def __init__(self):
2332
3422
dbus.service.Object.__init__(self, bus, "/")
3423
2333
3424
_interface = "se.recompile.Mandos"
2334
3425
2335
3426
@dbus.service.signal(_interface, signature="o")
2336
3427
def ClientAdded(self, objpath):
2337
3428
"D-Bus signal"
2338
3429
pass
2339
3430
2340
3431
@dbus.service.signal(_interface, signature="ss")
2341
def ClientNotFound(self, fingerprint, address):
3432
def ClientNotFound(self, key_id, address):
2342
3433
"D-Bus signal"
2343
3434
pass
2344
3435
3436
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3437
"true"})
2345
3438
@dbus.service.signal(_interface, signature="os")
2346
3439
def ClientRemoved(self, objpath, name):
2347
3440
"D-Bus signal"
2348
3441
pass
2349
3442
3443
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3444
"true"})
2350
3445
@dbus.service.method(_interface, out_signature="ao")
2351
3446
def GetAllClients(self):
2352
3447
"D-Bus method"
2353
return dbus.Array(c.dbus_object_path
2354
for c in
2355
tcp_server.clients.itervalues())
2356
3448
return dbus.Array(c.dbus_object_path for c in
3449
tcp_server.clients.values())
3450
3451
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3452
"true"})
2357
3453
@dbus.service.method(_interface,
2358
3454
out_signature="a{oa{sv}}")
2359
3455
def GetAllClientsWithProperties(self):
2360
3456
"D-Bus method"
2361
3457
return dbus.Dictionary(
2362
((c.dbus_object_path, c.GetAll(""))
2363
for c in tcp_server.clients.itervalues()),
3458
{c.dbus_object_path: c.GetAll(
3459
"se.recompile.Mandos.Client")
3460
for c in tcp_server.clients.values()},
2364
3461
signature="oa{sv}")
2365
3462
2366
3463
@dbus.service.method(_interface, in_signature="o")
2367
3464
def RemoveClient(self, object_path):
2368
3465
"D-Bus method"
2369
for c in tcp_server.clients.itervalues():
3466
for c in tcp_server.clients.values():
2370
3467
if c.dbus_object_path == object_path:
2371
3468
del tcp_server.clients[c.name]
2372
3469
c.remove_from_connection()
2373
# Don't signal anything except ClientRemoved
3470
# Don't signal the disabling
2374
3471
c.disable(quiet=True)
2375
# Emit D-Bus signal
2376
self.ClientRemoved(object_path, c.name)
3472
# Emit D-Bus signal for removal
3473
self.client_removed_signal(c)
2377
3474
return
2378
3475
raise KeyError(object_path)
2379
3476
2380
3477
del _interface
2381
2382
class MandosDBusServiceTransitional(MandosDBusService):
2383
__metaclass__ = AlternateDBusNamesMetaclass
2384
mandos_dbus_service = MandosDBusServiceTransitional()
2385
3478
3479
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3480
out_signature="a{oa{sa{sv}}}")
3481
def GetManagedObjects(self):
3482
"""D-Bus method"""
3483
return dbus.Dictionary(
3484
{client.dbus_object_path:
3485
dbus.Dictionary(
3486
{interface: client.GetAll(interface)
3487
for interface in
3488
client._get_all_interface_names()})
3489
for client in tcp_server.clients.values()})
3490
3491
def client_added_signal(self, client):
3492
"""Send the new standard signal and the old signal"""
3493
if use_dbus:
3494
# New standard signal
3495
self.InterfacesAdded(
3496
client.dbus_object_path,
3497
dbus.Dictionary(
3498
{interface: client.GetAll(interface)
3499
for interface in
3500
client._get_all_interface_names()}))
3501
# Old signal
3502
self.ClientAdded(client.dbus_object_path)
3503
3504
def client_removed_signal(self, client):
3505
"""Send the new standard signal and the old signal"""
3506
if use_dbus:
3507
# New standard signal
3508
self.InterfacesRemoved(
3509
client.dbus_object_path,
3510
client._get_all_interface_names())
3511
# Old signal
3512
self.ClientRemoved(client.dbus_object_path,
3513
client.name)
3514
3515
mandos_dbus_service = MandosDBusService()
3516
3517
# Save modules to variables to exempt the modules from being
3518
# unloaded before the function registered with atexit() is run.
3519
mp = multiprocessing
3520
wn = wnull
3521
2386
3522
def cleanup():
2387
3523
"Cleanup function; run on exit"
2388
service.cleanup()
2389
2390
multiprocessing.active_children()
3524
if zeroconf:
3525
service.cleanup()
3526
3527
mp.active_children()
3528
wn.close()
2391
3529
if not (tcp_server.clients or client_settings):
2392
3530
return
2393
3531
2394
3532
# Store client before exiting. Secrets are encrypted with key
2395
3533
# based on what config file has. If config file is
2396
3534
# removed/edited, old secret will thus be unrecovable.
2397
clients = []
2398
with Crypto() as crypt:
2399
for client in tcp_server.clients.itervalues():
3535
clients = {}
3536
with PGPEngine() as pgp:
3537
for client in tcp_server.clients.values():
2400
3538
key = client_settings[client.name]["secret"]
2401
client.encrypted_secret = crypt.encrypt(client.secret,
2402
key)
3539
client.encrypted_secret = pgp.encrypt(client.secret,
3540
key)
2403
3541
client_dict = {}
2404
2405
# A list of attributes that will not be stored when
2406
# shutting down.
2407
exclude = set(("bus", "changedstate", "secret"))
2408
for name, typ in (inspect.getmembers
2409
(dbus.service.Object)):
3542
3543
# A list of attributes that can not be pickled
3544
# + secret.
3545
exclude = {"bus", "changedstate", "secret",
3546
"checker", "server_settings"}
3547
for name, typ in inspect.getmembers(dbus.service
3548
.Object):
2410
3549
exclude.add(name)
2411
3550
2412
3551
client_dict["encrypted_secret"] = (client
2413
3552
.encrypted_secret)
2414
3553
for attr in client.client_structure:
2415
3554
if attr not in exclude:
2416
3555
client_dict[attr] = getattr(client, attr)
2417
2418
clients.append(client_dict)
3556
3557
clients[client.name] = client_dict
2419
3558
del client_settings[client.name]["secret"]
2420
3559
2421
3560
try:
2422
with os.fdopen(os.open(stored_state_path,
2423
os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
2424
0600), "wb") as stored_state:
2425
pickle.dump((clients, client_settings), stored_state)
3561
with tempfile.NamedTemporaryFile(
3562
mode='wb',
3563
suffix=".pickle",
3564
prefix='clients-',
3565
dir=os.path.dirname(stored_state_path),
3566
delete=False) as stored_state:
3567
pickle.dump((clients, client_settings), stored_state,
3568
protocol=2)
3569
tempname = stored_state.name
3570
os.rename(tempname, stored_state_path)
2426
3571
except (IOError, OSError) as e:
2427
logger.warning("Could not save persistent state: {0}"
2428
.format(e))
2429
if e.errno not in (errno.ENOENT, errno.EACCES):
3572
if not debug:
3573
try:
3574
os.remove(tempname)
3575
except NameError:
3576
pass
3577
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3578
logger.warning("Could not save persistent state: {}"
3579
.format(os.strerror(e.errno)))
3580
else:
3581
logger.warning("Could not save persistent state:",
3582
exc_info=e)
2430
3583
raise
2431
3584
2432
3585
# Delete all clients, and settings from config
2433
3586
while tcp_server.clients:
2434
3587
name, client = tcp_server.clients.popitem()
2435
3588
if use_dbus:
2436
3589
client.remove_from_connection()
2437
# Don't signal anything except ClientRemoved
3590
# Don't signal the disabling
2438
3591
client.disable(quiet=True)
3592
# Emit D-Bus signal for removal
2439
3593
if use_dbus:
2440
# Emit D-Bus signal
2441
mandos_dbus_service.ClientRemoved(client
2442
.dbus_object_path,
2443
client.name)
3594
mandos_dbus_service.client_removed_signal(client)
2444
3595
client_settings.clear()
2445
3596
2446
3597
atexit.register(cleanup)
2447
2448
for client in tcp_server.clients.itervalues():
3598
3599
for client in tcp_server.clients.values():
2449
3600
if use_dbus:
2450
# Emit D-Bus signal
2451
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3601
# Emit D-Bus signal for adding
3602
mandos_dbus_service.client_added_signal(client)
2452
3603
# Need to initiate checking of clients
2453
3604
if client.enabled:
2454
3605
client.init_checker()
2455
3606
2456
3607
tcp_server.enable()
2457
3608
tcp_server.server_activate()
2458
3609
2459
3610
# Find out what port we got
2460
service.port = tcp_server.socket.getsockname()[1]
3611
if zeroconf:
3612
service.port = tcp_server.socket.getsockname()[1]
2461
3613
if use_ipv6:
2462
3614
logger.info("Now listening on address %r, port %d,"
2463
" flowinfo %d, scope_id %d"
2464
% tcp_server.socket.getsockname())
3615
" flowinfo %d, scope_id %d",
3616
*tcp_server.socket.getsockname())
2465
3617
else: # IPv4
2466
logger.info("Now listening on address %r, port %d"
2467
% tcp_server.socket.getsockname())
2468
2469
#service.interface = tcp_server.socket.getsockname()[3]
2470
3618
logger.info("Now listening on address %r, port %d",
3619
*tcp_server.socket.getsockname())
3620
3621
# service.interface = tcp_server.socket.getsockname()[3]
3622
2471
3623
try:
2472
# From the Avahi example code
2473
try:
2474
service.activate()
2475
except dbus.exceptions.DBusException as error:
2476
logger.critical("DBusException: %s", error)
2477
cleanup()
2478
sys.exit(1)
2479
# End of Avahi example code
2480
2481
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2482
lambda *args, **kwargs:
2483
(tcp_server.handle_request
2484
(*args[2:], **kwargs) or True))
2485
3624
if zeroconf:
3625
# From the Avahi example code
3626
try:
3627
service.activate()
3628
except dbus.exceptions.DBusException as error:
3629
logger.critical("D-Bus Exception", exc_info=error)
3630
cleanup()
3631
sys.exit(1)
3632
# End of Avahi example code
3633
3634
GLib.io_add_watch(
3635
GLib.IOChannel.unix_new(tcp_server.fileno()),
3636
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3637
lambda *args, **kwargs: (tcp_server.handle_request
3638
(*args[2:], **kwargs) or True))
3639
2486
3640
logger.debug("Starting main loop")
2487
3641
main_loop.run()
2488
3642
except AvahiError as error:
2489
logger.critical("AvahiError: %s", error)
3643
logger.critical("Avahi Error", exc_info=error)
2490
3644
cleanup()
2491
3645
sys.exit(1)
2492
3646
except KeyboardInterrupt:
2497
3651
# Must run before the D-Bus bus name gets deregistered
2498
3652
cleanup()
2499
3653
3654
3655
def should_only_run_tests():
3656
parser = argparse.ArgumentParser(add_help=False)
3657
parser.add_argument("--check", action='store_true')
3658
args, unknown_args = parser.parse_known_args()
3659
run_tests = args.check
3660
if run_tests:
3661
# Remove --check argument from sys.argv
3662
sys.argv[1:] = unknown_args
3663
return run_tests
3664
3665
# Add all tests from doctest strings
3666
def load_tests(loader, tests, none):
3667
import doctest
3668
tests.addTests(doctest.DocTestSuite())
3669
return tests
2500
3670
2501
3671
if __name__ == '__main__':
2502
main()
3672
try:
3673
if should_only_run_tests():
3674
# Call using ./mandos --check [--verbose]
3675
unittest.main()
3676
else:
3677
main()
3678
finally:
3679
logging.shutdown()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0