To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/trunk
« back to all changes in this revision
Viewing changes to mandos
- browse files at revision 1229
- compare with another revision
- download diff
- download tarball
- view history from revision 1229
- Committer: teddy at recompile
- Date: 2020-12-03 20:30:45 UTC
- Revision ID: teddy@recompile.se-20201203203045-iqd6nq9y5nwalh1x
Minor fix of a test function
In dracut-module/password-agent, the test function
test_send_password_to_socket_EMSGSIZE() (which tests that the
send_password_to_socket() task function aborts properly when getting
EMSGSIZE when writing to the password socket), part of the test code
is supposed to find a message size which definitely does trigger
EMSGSIZE when send()ing to a socket. Without a "break" in the proper
place, however, the size given is always exactly 1024 bytes too large.
This is very probably not a problem, since a too large message will
still be too large if it is increased by 1024 bytes, and send(2) in
practice checks the size before reading the buffer. The biggest issue
would be if some version of send(2) would try to look at the last 1024
bytes of the message buffer before checking the message size; this
would then lead to a buffer over-read when running this test function.
(But even then there would be no security implications since the tests
are not run in the normal operation of the program.)
* dracut-module/password-agent.c
(test_send_password_to_socket_EMSGSIZE): Break out early when ssret
< 0 and errno == EMSGSIZE; don't allow loop to increase message_size
again.
In dracut-module/password-agent, the test function
test_send_password_to_socket_EMSGSIZE() (which tests that the
send_password_to_socket() task function aborts properly when getting
EMSGSIZE when writing to the password socket), part of the test code
is supposed to find a message size which definitely does trigger
EMSGSIZE when send()ing to a socket. Without a "break" in the proper
place, however, the size given is always exactly 1024 bytes too large.
This is very probably not a problem, since a too large message will
still be too large if it is increased by 1024 bytes, and send(2) in
practice checks the size before reading the buffer. The biggest issue
would be if some version of send(2) would try to look at the last 1024
bytes of the message buffer before checking the message size; this
would then lead to a buffer over-read when running this test function.
(But even then there would be no security implications since the tests
are not run in the normal operation of the program.)
* dracut-module/password-agent.c
(test_send_password_to_socket_EMSGSIZE): Break out early when ssret
< 0 and errno == EMSGSIZE; don't allow loop to increase message_size
again.
- files added:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- 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 © 2008-2012 Teddy Hogeborn
15
# Copyright © 2008-2012 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
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
83
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
version = "1.5.0"
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 = "1.8.13"
89
147
stored_state_file = "clients.pickle"
90
148
91
149
logger = logging.getLogger()
92
syslogger = (logging.handlers.SysLogHandler
93
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
94
address = str("/dev/log")))
150
logging.captureWarnings(True) # Show warnings via the logging system
151
syslogger = None
95
152
96
153
try:
97
if_nametoindex = (ctypes.cdll.LoadLibrary
98
(ctypes.util.find_library("c"))
99
.if_nametoindex)
154
if_nametoindex = ctypes.cdll.LoadLibrary(
155
ctypes.util.find_library("c")).if_nametoindex
100
156
except (OSError, AttributeError):
157
101
158
def if_nametoindex(interface):
102
159
"Get an interface index the hard way, i.e. using fcntl()"
103
160
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
104
161
with contextlib.closing(socket.socket()) as s:
105
162
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
106
struct.pack(str("16s16x"),
107
interface))
108
interface_index = struct.unpack(str("I"),
109
ifreq[16:20])[0]
163
struct.pack(b"16s16x", interface))
164
interface_index = struct.unpack("I", ifreq[16:20])[0]
110
165
return interface_index
111
166
112
167
168
def copy_function(func):
169
"""Make a copy of a function"""
170
if sys.version_info.major == 2:
171
return types.FunctionType(func.func_code,
172
func.func_globals,
173
func.func_name,
174
func.func_defaults,
175
func.func_closure)
176
else:
177
return types.FunctionType(func.__code__,
178
func.__globals__,
179
func.__name__,
180
func.__defaults__,
181
func.__closure__)
182
183
113
184
def initlogger(debug, level=logging.WARNING):
114
185
"""init logger and add loglevel"""
115
186
187
global syslogger
188
syslogger = (logging.handlers.SysLogHandler(
189
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
190
address="/dev/log"))
116
191
syslogger.setFormatter(logging.Formatter
117
192
('Mandos [%(process)d]: %(levelname)s:'
118
193
' %(message)s'))
119
194
logger.addHandler(syslogger)
120
195
121
196
if debug:
122
197
console = logging.StreamHandler()
123
198
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
133
208
pass
134
209
135
210
136
class PGPEngine(object):
211
class PGPEngine:
137
212
"""A simple class for OpenPGP symmetric encryption & decryption"""
213
138
214
def __init__(self):
139
self.gnupg = GnuPGInterface.GnuPG()
140
215
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
141
self.gnupg = GnuPGInterface.GnuPG()
142
self.gnupg.options.meta_interactive = False
143
self.gnupg.options.homedir = self.tempdir
144
self.gnupg.options.extra_args.extend(['--force-mdc',
145
'--quiet',
146
'--no-use-agent'])
147
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
148
235
def __enter__(self):
149
236
return self
150
151
def __exit__ (self, exc_type, exc_value, traceback):
237
238
def __exit__(self, exc_type, exc_value, traceback):
152
239
self._cleanup()
153
240
return False
154
241
155
242
def __del__(self):
156
243
self._cleanup()
157
244
158
245
def _cleanup(self):
159
246
if self.tempdir is not None:
160
247
# Delete contents of tempdir
161
248
for root, dirs, files in os.walk(self.tempdir,
162
topdown = False):
249
topdown=False):
163
250
for filename in files:
164
251
os.remove(os.path.join(root, filename))
165
252
for dirname in dirs:
167
254
# Remove tempdir
168
255
os.rmdir(self.tempdir)
169
256
self.tempdir = None
170
257
171
258
def password_encode(self, password):
172
259
# Passphrase can not be empty and can not contain newlines or
173
260
# NUL bytes. So we prefix it and hex encode it.
174
return b"mandos" + binascii.hexlify(password)
175
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
176
269
def encrypt(self, data, password):
177
self.gnupg.passphrase = self.password_encode(password)
178
with open(os.devnull) as devnull:
179
try:
180
proc = self.gnupg.run(['--symmetric'],
181
create_fhs=['stdin', 'stdout'],
182
attach_fhs={'stderr': devnull})
183
with contextlib.closing(proc.handles['stdin']) as f:
184
f.write(data)
185
with contextlib.closing(proc.handles['stdout']) as f:
186
ciphertext = f.read()
187
proc.wait()
188
except IOError as e:
189
raise PGPError(e)
190
self.gnupg.passphrase = None
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)
191
285
return ciphertext
192
286
193
287
def decrypt(self, data, password):
194
self.gnupg.passphrase = self.password_encode(password)
195
with open(os.devnull) as devnull:
196
try:
197
proc = self.gnupg.run(['--decrypt'],
198
create_fhs=['stdin', 'stdout'],
199
attach_fhs={'stderr': devnull})
200
with contextlib.closing(proc.handles['stdin'] ) as f:
201
f.write(data)
202
with contextlib.closing(proc.handles['stdout']) as f:
203
decrypted_plaintext = f.read()
204
proc.wait()
205
except IOError as e:
206
raise PGPError(e)
207
self.gnupg.passphrase = None
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)
208
303
return decrypted_plaintext
209
304
210
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
211
331
212
332
class AvahiError(Exception):
213
333
def __init__(self, value, *args, **kwargs):
214
334
self.value = value
215
super(AvahiError, self).__init__(value, *args, **kwargs)
216
def __unicode__(self):
217
return unicode(repr(self.value))
335
return super(AvahiError, self).__init__(value, *args,
336
**kwargs)
337
218
338
219
339
class AvahiServiceError(AvahiError):
220
340
pass
221
341
342
222
343
class AvahiGroupError(AvahiError):
223
344
pass
224
345
225
346
226
class AvahiService(object):
347
class AvahiService:
227
348
"""An Avahi (Zeroconf) service.
228
349
229
350
Attributes:
230
351
interface: integer; avahi.IF_UNSPEC or an interface index.
231
352
Used to optionally bind to the specified interface.
232
353
name: string; Example: 'Mandos'
233
354
type: string; Example: '_mandos._tcp'.
234
See <http://www.dns-sd.org/ServiceTypes.html>
355
See <https://www.iana.org/assignments/service-names-port-numbers>
235
356
port: integer; what port to announce
236
357
TXT: list of strings; TXT record for the service
237
358
domain: string; Domain to publish on, default to .local if empty.
243
364
server: D-Bus Server
244
365
bus: dbus.SystemBus()
245
366
"""
246
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
247
servicetype = None, port = None, TXT = None,
248
domain = "", host = "", max_renames = 32768,
249
protocol = avahi.PROTO_UNSPEC, bus = None):
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):
250
379
self.interface = interface
251
380
self.name = name
252
381
self.type = servicetype
261
390
self.server = None
262
391
self.bus = bus
263
392
self.entry_group_state_changed_match = None
264
def rename(self):
393
394
def rename(self, remove=True):
265
395
"""Derived from the Avahi example code"""
266
396
if self.rename_count >= self.max_renames:
267
397
logger.critical("No suitable Zeroconf service name found"
268
398
" after %i retries, exiting.",
269
399
self.rename_count)
270
400
raise AvahiServiceError("Too many renames")
271
self.name = unicode(self.server
272
.GetAlternativeServiceName(self.name))
401
self.name = str(
402
self.server.GetAlternativeServiceName(self.name))
403
self.rename_count += 1
273
404
logger.info("Changing Zeroconf service name to %r ...",
274
405
self.name)
275
self.remove()
406
if remove:
407
self.remove()
276
408
try:
277
409
self.add()
278
410
except dbus.exceptions.DBusException as error:
279
logger.critical("DBusException: %s", error)
280
self.cleanup()
281
os._exit(1)
282
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
283
420
def remove(self):
284
421
"""Derived from the Avahi example code"""
285
422
if self.entry_group_state_changed_match is not None:
287
424
self.entry_group_state_changed_match = None
288
425
if self.group is not None:
289
426
self.group.Reset()
427
290
428
def add(self):
291
429
"""Derived from the Avahi example code"""
292
430
self.remove()
309
447
dbus.UInt16(self.port),
310
448
avahi.string_array_to_txt_array(self.TXT))
311
449
self.group.Commit()
450
312
451
def entry_group_state_changed(self, state, error):
313
452
"""Derived from the Avahi example code"""
314
453
logger.debug("Avahi entry group state change: %i", state)
315
454
316
455
if state == avahi.ENTRY_GROUP_ESTABLISHED:
317
456
logger.debug("Zeroconf service established.")
318
457
elif state == avahi.ENTRY_GROUP_COLLISION:
320
459
self.rename()
321
460
elif state == avahi.ENTRY_GROUP_FAILURE:
322
461
logger.critical("Avahi: Error in group state changed %s",
323
unicode(error))
324
raise AvahiGroupError("State changed: %s"
325
% unicode(error))
462
str(error))
463
raise AvahiGroupError("State changed: {!s}".format(error))
464
326
465
def cleanup(self):
327
466
"""Derived from the Avahi example code"""
328
467
if self.group is not None:
333
472
pass
334
473
self.group = None
335
474
self.remove()
475
336
476
def server_state_changed(self, state, error=None):
337
477
"""Derived from the Avahi example code"""
338
478
logger.debug("Avahi server state change: %i", state)
339
bad_states = { avahi.SERVER_INVALID:
340
"Zeroconf server invalid",
341
avahi.SERVER_REGISTERING: None,
342
avahi.SERVER_COLLISION:
343
"Zeroconf server name collision",
344
avahi.SERVER_FAILURE:
345
"Zeroconf server failure" }
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
}
346
485
if state in bad_states:
347
486
if bad_states[state] is not None:
348
487
if error is None:
351
490
logger.error(bad_states[state] + ": %r", error)
352
491
self.cleanup()
353
492
elif state == avahi.SERVER_RUNNING:
354
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)
355
505
else:
356
506
if error is None:
357
507
logger.debug("Unknown state: %r", state)
358
508
else:
359
509
logger.debug("Unknown state: %r: %r", state, error)
510
360
511
def activate(self):
361
512
"""Derived from the Avahi example code"""
362
513
if self.server is None:
366
517
follow_name_owner_changes=True),
367
518
avahi.DBUS_INTERFACE_SERVER)
368
519
self.server.connect_to_signal("StateChanged",
369
self.server_state_changed)
520
self.server_state_changed)
370
521
self.server_state_changed(self.server.GetState())
371
522
523
372
524
class AvahiServiceToSyslog(AvahiService):
373
def rename(self):
525
def rename(self, *args, **kwargs):
374
526
"""Add the new name to the syslog messages"""
375
ret = AvahiService.rename(self)
376
syslogger.setFormatter(logging.Formatter
377
('Mandos (%s) [%%(process)d]:'
378
' %%(levelname)s: %%(message)s'
379
% 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)))
380
532
return ret
381
533
382
def timedelta_to_milliseconds(td):
383
"Convert a datetime.timedelta() to milliseconds"
384
return ((td.days * 24 * 60 * 60 * 1000)
385
+ (td.seconds * 1000)
386
+ (td.microseconds // 1000))
387
388
class Client(object):
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:
389
854
"""A representation of a client host served by this server.
390
855
391
856
Attributes:
392
857
approved: bool(); 'None' if not yet approved/disapproved
393
858
approval_delay: datetime.timedelta(); Time to wait for approval
394
859
approval_duration: datetime.timedelta(); Duration of one approval
395
checker: subprocess.Popen(); a running checker process used
396
to see if the client lives.
397
'None' if no process is running.
398
checker_callback_tag: a gobject event source tag, or None
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
399
864
checker_command: string; External command which is run to check
400
865
if client lives. %() expansions are done at
401
866
runtime with vars(self) as dict, so that for
402
867
instance %(name)s can be used in the command.
403
checker_initiator_tag: a gobject event source tag, or None
868
checker_initiator_tag: a GLib event source tag, or None
404
869
created: datetime.datetime(); (UTC) object creation
405
870
client_structure: Object describing what attributes a client has
406
871
and is used for storing the client at exit
407
872
current_checker_command: string; current running checker_command
408
disable_initiator_tag: a gobject event source tag, or None
873
disable_initiator_tag: a GLib event source tag, or None
409
874
enabled: bool()
410
875
fingerprint: string (40 or 32 hexadecimal digits); used to
411
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
412
879
host: string; available for use by the checker command
413
880
interval: datetime.timedelta(); How often to start a new checker
414
881
last_approval_request: datetime.datetime(); (UTC) or None
415
882
last_checked_ok: datetime.datetime(); (UTC) or None
416
883
last_checker_status: integer between 0 and 255 reflecting exit
417
884
status of last checker. -1 reflects crashed
418
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
419
888
last_enabled: datetime.datetime(); (UTC) or None
420
889
name: string; from the config file, used in log messages and
421
890
D-Bus identifiers
422
891
secret: bytestring; sent verbatim (over TLS) to client
423
892
timeout: datetime.timedelta(); How long from last_checked_ok
424
893
until this client is disabled
425
extended_timeout: extra long timeout when password has been sent
894
extended_timeout: extra long timeout when secret has been sent
426
895
runtime_expansions: Allowed attributes for runtime expansion.
427
896
expires: datetime.datetime(); time (UTC) when a client will be
428
897
disabled, or None
898
server_settings: The server_settings dict from main()
429
899
"""
430
900
431
901
runtime_expansions = ("approval_delay", "approval_duration",
432
"created", "enabled", "fingerprint",
433
"host", "interval", "last_checked_ok",
902
"created", "enabled", "expires", "key_id",
903
"fingerprint", "host", "interval",
904
"last_approval_request", "last_checked_ok",
434
905
"last_enabled", "name", "timeout")
435
client_defaults = { "timeout": "5m",
436
"extended_timeout": "15m",
437
"interval": "2m",
438
"checker": "fping -q -- %%(host)s",
439
"host": "",
440
"approval_delay": "0s",
441
"approval_duration": "1s",
442
"approved_by_default": "True",
443
"enabled": "True",
444
}
445
446
def timeout_milliseconds(self):
447
"Return the 'timeout' attribute in milliseconds"
448
return timedelta_to_milliseconds(self.timeout)
449
450
def extended_timeout_milliseconds(self):
451
"Return the 'extended_timeout' attribute in milliseconds"
452
return timedelta_to_milliseconds(self.extended_timeout)
453
454
def interval_milliseconds(self):
455
"Return the 'interval' attribute in milliseconds"
456
return timedelta_to_milliseconds(self.interval)
457
458
def approval_delay_milliseconds(self):
459
return timedelta_to_milliseconds(self.approval_delay)
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
}
460
917
461
918
@staticmethod
462
919
def config_parser(config):
470
927
for client_name in config.sections():
471
928
section = dict(config.items(client_name))
472
929
client = settings[client_name] = {}
473
930
474
931
client["host"] = section["host"]
475
932
# Reformat values from string types to Python types
476
933
client["approved_by_default"] = config.getboolean(
477
934
client_name, "approved_by_default")
478
935
client["enabled"] = config.getboolean(client_name,
479
936
"enabled")
480
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(" ", ""))
481
943
client["fingerprint"] = (section["fingerprint"].upper()
482
944
.replace(" ", ""))
483
945
if "secret" in section:
484
client["secret"] = section["secret"].decode("base64")
946
client["secret"] = codecs.decode(section["secret"]
947
.encode("utf-8"),
948
"base64")
485
949
elif "secfile" in section:
486
950
with open(os.path.expanduser(os.path.expandvars
487
951
(section["secfile"])),
488
952
"rb") as secfile:
489
953
client["secret"] = secfile.read()
490
954
else:
491
raise TypeError("No secret or secfile for section %s"
492
% section)
955
raise TypeError("No secret or secfile for section {}"
956
.format(section))
493
957
client["timeout"] = string_to_delta(section["timeout"])
494
958
client["extended_timeout"] = string_to_delta(
495
959
section["extended_timeout"])
501
965
client["checker_command"] = section["checker"]
502
966
client["last_approval_request"] = None
503
967
client["last_checked_ok"] = None
504
client["last_checker_status"] = None
505
968
client["last_checker_status"] = -2
969
506
970
return settings
507
508
509
def __init__(self, settings, name = None):
510
"""Note: the 'checker' key in 'config' sets the
511
'checker_command' attribute and *not* the 'checker'
512
attribute."""
971
972
def __init__(self, settings, name=None, server_settings=None):
513
973
self.name = name
974
if server_settings is None:
975
server_settings = {}
976
self.server_settings = server_settings
514
977
# adding all client settings
515
for setting, value in settings.iteritems():
978
for setting, value in settings.items():
516
979
setattr(self, setting, value)
517
980
518
981
if self.enabled:
519
982
if not hasattr(self, "last_enabled"):
520
983
self.last_enabled = datetime.datetime.utcnow()
524
987
else:
525
988
self.last_enabled = None
526
989
self.expires = None
527
990
528
991
logger.debug("Creating client %r", self.name)
529
# Uppercase and remove spaces from fingerprint for later
530
# comparison purposes with return value from the fingerprint()
531
# function
992
logger.debug(" Key ID: %s", self.key_id)
532
993
logger.debug(" Fingerprint: %s", self.fingerprint)
533
994
self.created = settings.get("created",
534
995
datetime.datetime.utcnow())
541
1002
self.current_checker_command = None
542
1003
self.approved = None
543
1004
self.approvals_pending = 0
544
self.changedstate = (multiprocessing_manager
545
.Condition(multiprocessing_manager
546
.Lock()))
547
self.client_structure = [attr for attr in
548
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()
549
1009
if not attr.startswith("_")]
550
1010
self.client_structure.append("client_structure")
551
552
for name, t in inspect.getmembers(type(self),
553
lambda obj:
554
isinstance(obj,
555
property)):
1011
1012
for name, t in inspect.getmembers(
1013
type(self), lambda obj: isinstance(obj, property)):
556
1014
if not name.startswith("_"):
557
1015
self.client_structure.append(name)
558
1016
559
1017
# Send notice to process children that client state has changed
560
1018
def send_changedstate(self):
561
1019
with self.changedstate:
562
1020
self.changedstate.notify_all()
563
1021
564
1022
def enable(self):
565
1023
"""Start this client's checker and timeout hooks"""
566
1024
if getattr(self, "enabled", False):
567
1025
# Already enabled
568
1026
return
569
self.send_changedstate()
570
1027
self.expires = datetime.datetime.utcnow() + self.timeout
571
1028
self.enabled = True
572
1029
self.last_enabled = datetime.datetime.utcnow()
573
1030
self.init_checker()
574
1031
self.send_changedstate()
1032
575
1033
def disable(self, quiet=True):
576
1034
"""Disable this client."""
577
1035
if not getattr(self, "enabled", False):
578
1036
return False
579
1037
if not quiet:
580
self.send_changedstate()
581
if not quiet:
582
1038
logger.info("Disabling client %s", self.name)
583
if getattr(self, "disable_initiator_tag", False):
584
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)
585
1041
self.disable_initiator_tag = None
586
1042
self.expires = None
587
if getattr(self, "checker_initiator_tag", False):
588
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)
589
1045
self.checker_initiator_tag = None
590
1046
self.stop_checker()
591
1047
self.enabled = False
592
# 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
593
1051
return False
594
1052
595
1053
def __del__(self):
596
1054
self.disable()
597
1055
598
1056
def init_checker(self):
599
1057
# Schedule a new checker to be started an 'interval' from now,
600
1058
# and every interval from then on.
601
self.checker_initiator_tag = (gobject.timeout_add
602
(self.interval_milliseconds(),
603
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)
604
1065
# Schedule a disable() when 'timeout' has passed
605
self.disable_initiator_tag = (gobject.timeout_add
606
(self.timeout_milliseconds(),
607
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)
608
1070
# Also start a new checker *right now*.
609
1071
self.start_checker()
610
611
def checker_callback(self, pid, condition, command):
1072
1073
def checker_callback(self, source, condition, connection,
1074
command):
612
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()
613
1081
self.checker_callback_tag = None
614
1082
self.checker = None
615
if os.WIFEXITED(condition):
616
self.last_checker_status = os.WEXITSTATUS(condition)
1083
1084
if returncode >= 0:
1085
self.last_checker_status = returncode
1086
self.last_checker_signal = None
617
1087
if self.last_checker_status == 0:
618
1088
logger.info("Checker for %(name)s succeeded",
619
1089
vars(self))
620
1090
self.checked_ok()
621
1091
else:
622
logger.info("Checker for %(name)s failed",
623
vars(self))
1092
logger.info("Checker for %(name)s failed", vars(self))
624
1093
else:
625
1094
self.last_checker_status = -1
1095
self.last_checker_signal = -returncode
626
1096
logger.warning("Checker for %(name)s crashed?",
627
1097
vars(self))
628
629
def checked_ok(self, timeout=None):
630
"""Bump up the timeout for this client.
631
632
This should only be called when the client has been seen,
633
alive and well.
634
"""
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."""
635
1109
if timeout is None:
636
1110
timeout = self.timeout
637
self.last_checked_ok = datetime.datetime.utcnow()
638
1111
if self.disable_initiator_tag is not None:
639
gobject.source_remove(self.disable_initiator_tag)
1112
GLib.source_remove(self.disable_initiator_tag)
1113
self.disable_initiator_tag = None
640
1114
if getattr(self, "enabled", False):
641
self.disable_initiator_tag = (gobject.timeout_add
642
(timedelta_to_milliseconds
643
(timeout), self.disable))
1115
self.disable_initiator_tag = GLib.timeout_add(
1116
int(timeout.total_seconds() * 1000), self.disable)
644
1117
self.expires = datetime.datetime.utcnow() + timeout
645
1118
646
1119
def need_approval(self):
647
1120
self.last_approval_request = datetime.datetime.utcnow()
648
1121
649
1122
def start_checker(self):
650
1123
"""Start a new checker subprocess if one is not running.
651
1124
652
1125
If a checker already exists, leave it running and do
653
1126
nothing."""
654
1127
# The reason for not killing a running checker is that if we
655
# did that, then if a checker (for some reason) started
656
# running slowly and taking more than 'interval' time, the
657
# client would inevitably timeout, since no checker would get
658
# a chance to run to completion. If we instead leave running
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
659
1132
# checkers alone, the checker would have to take more time
660
1133
# than 'timeout' for the client to be disabled, which is as it
661
1134
# should be.
662
663
# If a checker exists, make sure it is not a zombie
664
try:
665
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
666
except (AttributeError, OSError) as error:
667
if (isinstance(error, OSError)
668
and error.errno != errno.ECHILD):
669
raise error
670
else:
671
if pid:
672
logger.warning("Checker was a zombie")
673
gobject.source_remove(self.checker_callback_tag)
674
self.checker_callback(pid, status,
675
self.current_checker_command)
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
676
1140
# Start a new checker if needed
677
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}
678
1146
try:
679
# In case checker_command has exactly one % operator
680
command = self.checker_command % self.host
681
except TypeError:
682
# Escape attributes for the shell
683
escaped_attrs = dict(
684
(attr,
685
re.escape(unicode(str(getattr(self, attr, "")),
686
errors=
687
'replace')))
688
for attr in
689
self.runtime_expansions)
690
691
try:
692
command = self.checker_command % escaped_attrs
693
except TypeError as error:
694
logger.error('Could not format string "%s":'
695
' %s', self.checker_command, error)
696
return True # Try again later
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
697
1153
self.current_checker_command = command
698
try:
699
logger.info("Starting checker %r for %s",
700
command, self.name)
701
# We don't need to redirect stdout and stderr, since
702
# in normal mode, that is already done by daemon(),
703
# and in debug mode we don't want to. (Stdin is
704
# always replaced by /dev/null.)
705
self.checker = subprocess.Popen(command,
706
close_fds=True,
707
shell=True, cwd="/")
708
self.checker_callback_tag = (gobject.child_watch_add
709
(self.checker.pid,
710
self.checker_callback,
711
data=command))
712
# The checker may have completed before the gobject
713
# watch was added. Check for this.
714
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
715
if pid:
716
gobject.source_remove(self.checker_callback_tag)
717
self.checker_callback(pid, status, command)
718
except OSError as error:
719
logger.error("Failed to start subprocess: %s",
720
error)
721
# Re-run this periodically if run by gobject.timeout_add
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
722
1181
return True
723
1182
724
1183
def stop_checker(self):
725
1184
"""Force the checker process, if any, to stop."""
726
1185
if self.checker_callback_tag:
727
gobject.source_remove(self.checker_callback_tag)
1186
GLib.source_remove(self.checker_callback_tag)
728
1187
self.checker_callback_tag = None
729
1188
if getattr(self, "checker", None) is None:
730
1189
return
731
1190
logger.debug("Stopping checker for %(name)s", vars(self))
732
try:
733
os.kill(self.checker.pid, signal.SIGTERM)
734
#time.sleep(0.5)
735
#if self.checker.poll() is None:
736
# os.kill(self.checker.pid, signal.SIGKILL)
737
except OSError as error:
738
if error.errno != errno.ESRCH: # No such process
739
raise
1191
self.checker.terminate()
740
1192
self.checker = None
741
1193
742
1194
743
def dbus_service_property(dbus_interface, signature="v",
744
access="readwrite", byte_arrays=False):
1195
def dbus_service_property(dbus_interface,
1196
signature="v",
1197
access="readwrite",
1198
byte_arrays=False):
745
1199
"""Decorators for marking methods of a DBusObjectWithProperties to
746
1200
become properties on the D-Bus.
747
1201
748
1202
The decorated method will be called with no arguments by "Get"
749
1203
and with one argument by "Set".
750
1204
751
1205
The parameters, where they are supported, are the same as
752
1206
dbus.service.method, except there is only "signature", since the
753
1207
type from Get() and the type sent to Set() is the same.
756
1210
# "Set" method, so we fail early here:
757
1211
if byte_arrays and signature != "ay":
758
1212
raise ValueError("Byte arrays not supported for non-'ay'"
759
" signature %r" % signature)
1213
" signature {!r}".format(signature))
1214
760
1215
def decorator(func):
761
1216
func._dbus_is_property = True
762
1217
func._dbus_interface = dbus_interface
765
1220
func._dbus_name = func.__name__
766
1221
if func._dbus_name.endswith("_dbus_property"):
767
1222
func._dbus_name = func._dbus_name[:-14]
768
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
769
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
770
1269
return decorator
771
1270
772
1271
773
1272
class DBusPropertyException(dbus.exceptions.DBusException):
774
1273
"""A base class for D-Bus property-related exceptions
775
1274
"""
776
def __unicode__(self):
777
return unicode(str(self))
1275
pass
778
1276
779
1277
780
1278
class DBusPropertyAccessException(DBusPropertyException):
789
1287
pass
790
1288
791
1289
792
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):
793
1380
"""A D-Bus object with properties.
794
1381
795
1382
Classes inheriting from this can use the dbus_service_property
796
1383
decorator to expose methods as D-Bus properties. It exposes the
797
1384
standard Get(), Set(), and GetAll() methods on the D-Bus.
798
1385
"""
799
800
@staticmethod
801
def _is_dbus_property(obj):
802
return getattr(obj, "_dbus_is_property", False)
803
804
def _get_all_dbus_properties(self):
805
"""Returns a generator of (name, attribute) pairs
806
"""
807
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
808
for cls in self.__class__.__mro__
809
for name, prop in
810
inspect.getmembers(cls, self._is_dbus_property))
811
1386
812
1387
def _get_dbus_property(self, interface_name, property_name):
813
1388
"""Returns a bound method if one exists which is a D-Bus
814
1389
property with the specified name and interface.
815
1390
"""
816
for cls in self.__class__.__mro__:
817
for name, value in (inspect.getmembers
818
(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")):
819
1394
if (value._dbus_name == property_name
820
1395
and value._dbus_interface == interface_name):
821
1396
return value.__get__(self)
822
1397
823
1398
# No such property
824
raise DBusPropertyNotFound(self.dbus_object_path + ":"
825
+ interface_name + "."
826
+ property_name)
827
828
@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",
829
1413
out_signature="v")
830
1414
def Get(self, interface_name, property_name):
831
1415
"""Standard D-Bus property Get() method, see D-Bus standard.
837
1421
if not hasattr(value, "variant_level"):
838
1422
return value
839
1423
return type(value)(value, variant_level=value.variant_level+1)
840
1424
841
1425
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
842
1426
def Set(self, interface_name, property_name, value):
843
1427
"""Standard D-Bus property Set() method, see D-Bus standard.
849
1433
# The byte_arrays option is not supported yet on
850
1434
# signatures other than "ay".
851
1435
if prop._dbus_signature != "ay":
852
raise ValueError
853
value = dbus.ByteArray(b''.join(chr(byte)
854
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))
855
1440
prop(value)
856
857
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1441
1442
@dbus.service.method(dbus.PROPERTIES_IFACE,
1443
in_signature="s",
858
1444
out_signature="a{sv}")
859
1445
def GetAll(self, interface_name):
860
1446
"""Standard D-Bus property GetAll() method, see D-Bus
861
1447
standard.
862
1448
863
1449
Note: Will not include properties with access="write".
864
1450
"""
865
1451
properties = {}
866
for name, prop in self._get_all_dbus_properties():
1452
for name, prop in self._get_all_dbus_things("property"):
867
1453
if (interface_name
868
1454
and interface_name != prop._dbus_interface):
869
1455
# Interface non-empty but did not match
875
1461
if not hasattr(value, "variant_level"):
876
1462
properties[name] = value
877
1463
continue
878
properties[name] = type(value)(value, variant_level=
879
value.variant_level+1)
1464
properties[name] = type(value)(
1465
value, variant_level=value.variant_level + 1)
880
1466
return dbus.Dictionary(properties, signature="sv")
881
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
882
1476
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
883
1477
out_signature="s",
884
1478
path_keyword='object_path',
885
1479
connection_keyword='connection')
886
1480
def Introspect(self, object_path, connection):
887
"""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.
888
1484
"""
889
xmlstring = dbus.service.Object.Introspect(self, object_path,
890
connection)
1485
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1486
object_path,
1487
connection)
891
1488
try:
892
1489
document = xml.dom.minidom.parseString(xmlstring)
1490
893
1491
def make_tag(document, name, prop):
894
1492
e = document.createElement("property")
895
1493
e.setAttribute("name", name)
896
1494
e.setAttribute("type", prop._dbus_signature)
897
1495
e.setAttribute("access", prop._dbus_access)
898
1496
return e
1497
899
1498
for if_tag in document.getElementsByTagName("interface"):
1499
# Add property tags
900
1500
for tag in (make_tag(document, name, prop)
901
1501
for name, prop
902
in self._get_all_dbus_properties()
1502
in self._get_all_dbus_things("property")
903
1503
if prop._dbus_interface
904
1504
== if_tag.getAttribute("name")):
905
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)
906
1522
# Add the names to the return values for the
907
1523
# "org.freedesktop.DBus.Properties" methods
908
1524
if (if_tag.getAttribute("name")
923
1539
except (AttributeError, xml.dom.DOMException,
924
1540
xml.parsers.expat.ExpatError) as error:
925
1541
logger.error("Failed to override Introspection method",
926
error)
927
return xmlstring
928
929
930
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):
931
1618
"""Convert a UTC datetime.datetime() to a D-Bus type."""
932
1619
if dt is None:
933
return dbus.String("", variant_level = variant_level)
934
return dbus.String(dt.isoformat(),
935
variant_level=variant_level)
936
937
938
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
939
.__metaclass__):
940
"""Applied to an empty subclass of a D-Bus object, this metaclass
941
will add additional D-Bus attributes matching a certain pattern.
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).
942
1646
"""
943
def __new__(mcs, name, bases, attr):
944
# Go through all the base classes which could have D-Bus
945
# methods, signals, or properties in them
946
for base in (b for b in bases
947
if issubclass(b, dbus.service.Object)):
948
# Go though all attributes of the base class
949
for attrname, attribute in inspect.getmembers(base):
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):
950
1655
# Ignore non-D-Bus attributes, and D-Bus attributes
951
1656
# with the wrong interface name
952
1657
if (not hasattr(attribute, "_dbus_interface")
953
or not attribute._dbus_interface
954
.startswith("se.recompile.Mandos")):
1658
or not attribute._dbus_interface.startswith(
1659
orig_interface_name)):
955
1660
continue
956
1661
# Create an alternate D-Bus interface name based on
957
1662
# the current name
958
alt_interface = (attribute._dbus_interface
959
.replace("se.recompile.Mandos",
960
"se.bsnet.fukt.Mandos"))
1663
alt_interface = attribute._dbus_interface.replace(
1664
orig_interface_name, alt_interface_name)
1665
interface_names.add(alt_interface)
961
1666
# Is this a D-Bus signal?
962
1667
if getattr(attribute, "_dbus_is_signal", False):
963
# Extract the original non-method function by
964
# black magic
965
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(
966
1672
zip(attribute.func_code.co_freevars,
967
attribute.__closure__))["func"]
968
.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)
969
1680
# Create a new, but exactly alike, function
970
1681
# object, and decorate it to be a new D-Bus signal
971
1682
# with the alternate D-Bus interface name
972
new_function = (dbus.service.signal
973
(alt_interface,
974
attribute._dbus_signature)
975
(types.FunctionType(
976
nonmethod_func.func_code,
977
nonmethod_func.func_globals,
978
nonmethod_func.func_name,
979
nonmethod_func.func_defaults,
980
nonmethod_func.func_closure)))
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
981
1694
# Define a creator of a function to call both the
982
# old and new functions, so both the old and new
983
# 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
984
1698
def fixscope(func1, func2):
985
1699
"""This function is a scope container to pass
986
1700
func1 and func2 to the "call_both" function
987
1701
outside of its arguments"""
1702
1703
@functools.wraps(func2)
988
1704
def call_both(*args, **kwargs):
989
1705
"""This function will emit two D-Bus
990
1706
signals by calling func1 and func2"""
991
1707
func1(*args, **kwargs)
992
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
993
1715
return call_both
994
1716
# Create the "call_both" function and add it to
995
1717
# the class
996
attr[attrname] = fixscope(attribute,
997
new_function)
1718
attr[attrname] = fixscope(attribute, new_function)
998
1719
# Is this a D-Bus method?
999
1720
elif getattr(attribute, "_dbus_is_method", False):
1000
1721
# Create a new, but exactly alike, function
1001
1722
# object. Decorate it to be a new D-Bus method
1002
1723
# with the alternate D-Bus interface name. Add it
1003
1724
# to the class.
1004
attr[attrname] = (dbus.service.method
1005
(alt_interface,
1006
attribute._dbus_in_signature,
1007
attribute._dbus_out_signature)
1008
(types.FunctionType
1009
(attribute.func_code,
1010
attribute.func_globals,
1011
attribute.func_name,
1012
attribute.func_defaults,
1013
attribute.func_closure)))
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
1014
1737
# Is this a D-Bus property?
1015
1738
elif getattr(attribute, "_dbus_is_property", False):
1016
1739
# Create a new, but exactly alike, function
1017
1740
# object, and decorate it to be a new D-Bus
1018
1741
# property with the alternate D-Bus interface
1019
1742
# name. Add it to the class.
1020
attr[attrname] = (dbus_service_property
1021
(alt_interface,
1022
attribute._dbus_signature,
1023
attribute._dbus_access,
1024
attribute
1025
._dbus_get_args_options
1026
["byte_arrays"])
1027
(types.FunctionType
1028
(attribute.func_code,
1029
attribute.func_globals,
1030
attribute.func_name,
1031
attribute.func_defaults,
1032
attribute.func_closure)))
1033
return type.__new__(mcs, name, bases, attr)
1034
1035
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"})
1036
1795
class ClientDBus(Client, DBusObjectWithProperties):
1037
1796
"""A Client class using D-Bus
1038
1797
1039
1798
Attributes:
1040
1799
dbus_object_path: dbus.ObjectPath
1041
1800
bus: dbus.SystemBus()
1042
1801
"""
1043
1802
1044
1803
runtime_expansions = (Client.runtime_expansions
1045
+ ("dbus_object_path",))
1046
1804
+ ("dbus_object_path", ))
1805
1806
_interface = "se.recompile.Mandos.Client"
1807
1047
1808
# dbus.service.Object doesn't use super(), so we can't either.
1048
1049
def __init__(self, bus = None, *args, **kwargs):
1809
1810
def __init__(self, bus=None, *args, **kwargs):
1050
1811
self.bus = bus
1051
1812
Client.__init__(self, *args, **kwargs)
1052
self._approvals_pending = 0
1053
1054
self._approvals_pending = 0
1055
1813
# Only now, when this client is initialized, can it show up on
1056
1814
# the D-Bus
1057
client_object_name = unicode(self.name).translate(
1815
client_object_name = str(self.name).translate(
1058
1816
{ord("."): ord("_"),
1059
1817
ord("-"): ord("_")})
1060
self.dbus_object_path = (dbus.ObjectPath
1061
("/clients/" + client_object_name))
1818
self.dbus_object_path = dbus.ObjectPath(
1819
"/clients/" + client_object_name)
1062
1820
DBusObjectWithProperties.__init__(self, self.bus,
1063
1821
self.dbus_object_path)
1064
1065
def notifychangeproperty(transform_func,
1066
dbus_name, type_func=lambda x: x,
1067
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):
1068
1828
""" Modify a variable so that it's a property which announces
1069
1829
its changes to DBus.
1070
1830
1071
1831
transform_fun: Function that takes a value and a variant_level
1072
1832
and transforms it to a D-Bus type.
1073
1833
dbus_name: D-Bus name of the variable
1075
1835
to the D-Bus. Default: no transform
1076
1836
variant_level: D-Bus variant level. Default: 1
1077
1837
"""
1078
attrname = "_{0}".format(dbus_name)
1838
attrname = "_{}".format(dbus_name)
1839
1079
1840
def setter(self, value):
1080
1841
if hasattr(self, "dbus_object_path"):
1081
1842
if (not hasattr(self, attrname) or
1082
1843
type_func(getattr(self, attrname, None))
1083
1844
!= type_func(value)):
1084
dbus_value = transform_func(type_func(value),
1085
variant_level
1086
=variant_level)
1087
self.PropertyChanged(dbus.String(dbus_name),
1088
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())
1089
1860
setattr(self, attrname, value)
1090
1861
1091
1862
return property(lambda self: getattr(self, attrname), setter)
1092
1093
1863
1094
1864
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1095
1865
approvals_pending = notifychangeproperty(dbus.Boolean,
1096
1866
"ApprovalPending",
1097
type_func = bool)
1867
type_func=bool)
1098
1868
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1099
1869
last_enabled = notifychangeproperty(datetime_to_dbus,
1100
1870
"LastEnabled")
1101
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1102
type_func = lambda checker:
1103
checker is not None)
1871
checker = notifychangeproperty(
1872
dbus.Boolean, "CheckerRunning",
1873
type_func=lambda checker: checker is not None)
1104
1874
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1105
1875
"LastCheckedOK")
1876
last_checker_status = notifychangeproperty(dbus.Int16,
1877
"LastCheckerStatus")
1106
1878
last_approval_request = notifychangeproperty(
1107
1879
datetime_to_dbus, "LastApprovalRequest")
1108
1880
approved_by_default = notifychangeproperty(dbus.Boolean,
1109
1881
"ApprovedByDefault")
1110
approval_delay = notifychangeproperty(dbus.UInt64,
1111
"ApprovalDelay",
1112
type_func =
1113
timedelta_to_milliseconds)
1882
approval_delay = notifychangeproperty(
1883
dbus.UInt64, "ApprovalDelay",
1884
type_func=lambda td: td.total_seconds() * 1000)
1114
1885
approval_duration = notifychangeproperty(
1115
1886
dbus.UInt64, "ApprovalDuration",
1116
type_func = timedelta_to_milliseconds)
1887
type_func=lambda td: td.total_seconds() * 1000)
1117
1888
host = notifychangeproperty(dbus.String, "Host")
1118
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1119
type_func =
1120
timedelta_to_milliseconds)
1889
timeout = notifychangeproperty(
1890
dbus.UInt64, "Timeout",
1891
type_func=lambda td: td.total_seconds() * 1000)
1121
1892
extended_timeout = notifychangeproperty(
1122
1893
dbus.UInt64, "ExtendedTimeout",
1123
type_func = timedelta_to_milliseconds)
1124
interval = notifychangeproperty(dbus.UInt64,
1125
"Interval",
1126
type_func =
1127
timedelta_to_milliseconds)
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)
1128
1898
checker_command = notifychangeproperty(dbus.String, "Checker")
1129
1899
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1900
invalidate_only=True)
1901
1130
1902
del notifychangeproperty
1131
1903
1132
1904
def __del__(self, *args, **kwargs):
1133
1905
try:
1134
1906
self.remove_from_connection()
1137
1909
if hasattr(DBusObjectWithProperties, "__del__"):
1138
1910
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1139
1911
Client.__del__(self, *args, **kwargs)
1140
1141
def checker_callback(self, pid, condition, command,
1142
*args, **kwargs):
1143
self.checker_callback_tag = None
1144
self.checker = None
1145
if os.WIFEXITED(condition):
1146
exitstatus = os.WEXITSTATUS(condition)
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:
1147
1920
# Emit D-Bus signal
1148
1921
self.CheckerCompleted(dbus.Int16(exitstatus),
1149
dbus.Int64(condition),
1922
# This is specific to GNU libC
1923
dbus.Int64(exitstatus << 8),
1150
1924
dbus.String(command))
1151
1925
else:
1152
1926
# Emit D-Bus signal
1153
1927
self.CheckerCompleted(dbus.Int16(-1),
1154
dbus.Int64(condition),
1928
dbus.Int64(
1929
# This is specific to GNU libC
1930
(exitstatus << 8)
1931
| self.last_checker_signal),
1155
1932
dbus.String(command))
1156
1157
return Client.checker_callback(self, pid, condition, command,
1158
*args, **kwargs)
1159
1933
return ret
1934
1160
1935
def start_checker(self, *args, **kwargs):
1161
old_checker = self.checker
1162
if self.checker is not None:
1163
old_checker_pid = self.checker.pid
1164
else:
1165
old_checker_pid = None
1936
old_checker_pid = getattr(self.checker, "pid", None)
1166
1937
r = Client.start_checker(self, *args, **kwargs)
1167
1938
# Only if new checker process was started
1168
1939
if (self.checker is not None
1170
1941
# Emit D-Bus signal
1171
1942
self.CheckerStarted(self.current_checker_command)
1172
1943
return r
1173
1944
1174
1945
def _reset_approved(self):
1175
1946
self.approved = None
1176
1947
return False
1177
1948
1178
1949
def approve(self, value=True):
1179
self.send_changedstate()
1180
1950
self.approved = value
1181
gobject.timeout_add(timedelta_to_milliseconds
1182
(self.approval_duration),
1183
self._reset_approved)
1184
1185
1186
## D-Bus methods, signals & properties
1187
_interface = "se.recompile.Mandos.Client"
1188
1189
## Signals
1190
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
1191
1961
# CheckerCompleted - signal
1192
1962
@dbus.service.signal(_interface, signature="nxs")
1193
1963
def CheckerCompleted(self, exitcode, waitstatus, command):
1194
1964
"D-Bus signal"
1195
1965
pass
1196
1966
1197
1967
# CheckerStarted - signal
1198
1968
@dbus.service.signal(_interface, signature="s")
1199
1969
def CheckerStarted(self, command):
1200
1970
"D-Bus signal"
1201
1971
pass
1202
1972
1203
1973
# PropertyChanged - signal
1974
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1204
1975
@dbus.service.signal(_interface, signature="sv")
1205
1976
def PropertyChanged(self, property, value):
1206
1977
"D-Bus signal"
1207
1978
pass
1208
1979
1209
1980
# GotSecret - signal
1210
1981
@dbus.service.signal(_interface)
1211
1982
def GotSecret(self):
1214
1985
server to mandos-client
1215
1986
"""
1216
1987
pass
1217
1988
1218
1989
# Rejected - signal
1219
1990
@dbus.service.signal(_interface, signature="s")
1220
1991
def Rejected(self, reason):
1221
1992
"D-Bus signal"
1222
1993
pass
1223
1994
1224
1995
# NeedApproval - signal
1225
1996
@dbus.service.signal(_interface, signature="tb")
1226
1997
def NeedApproval(self, timeout, default):
1227
1998
"D-Bus signal"
1228
1999
return self.need_approval()
1229
1230
# NeRwequest - signal
1231
@dbus.service.signal(_interface, signature="s")
1232
def NewRequest(self, ip):
1233
"""D-Bus signal
1234
Is sent after a client request a password.
1235
"""
1236
pass
1237
1238
## Methods
1239
2000
2001
# Methods
2002
1240
2003
# Approve - method
1241
2004
@dbus.service.method(_interface, in_signature="b")
1242
2005
def Approve(self, value):
1243
2006
self.approve(value)
1244
2007
1245
2008
# CheckedOK - method
1246
2009
@dbus.service.method(_interface)
1247
2010
def CheckedOK(self):
1248
2011
self.checked_ok()
1249
2012
1250
2013
# Enable - method
2014
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1251
2015
@dbus.service.method(_interface)
1252
2016
def Enable(self):
1253
2017
"D-Bus method"
1254
2018
self.enable()
1255
2019
1256
2020
# StartChecker - method
2021
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1257
2022
@dbus.service.method(_interface)
1258
2023
def StartChecker(self):
1259
2024
"D-Bus method"
1260
2025
self.start_checker()
1261
2026
1262
2027
# Disable - method
2028
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1263
2029
@dbus.service.method(_interface)
1264
2030
def Disable(self):
1265
2031
"D-Bus method"
1266
2032
self.disable()
1267
2033
1268
2034
# StopChecker - method
2035
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1269
2036
@dbus.service.method(_interface)
1270
2037
def StopChecker(self):
1271
2038
self.stop_checker()
1272
1273
## Properties
1274
2039
2040
# Properties
2041
1275
2042
# ApprovalPending - property
1276
2043
@dbus_service_property(_interface, signature="b", access="read")
1277
2044
def ApprovalPending_dbus_property(self):
1278
2045
return dbus.Boolean(bool(self.approvals_pending))
1279
2046
1280
2047
# ApprovedByDefault - property
1281
@dbus_service_property(_interface, signature="b",
2048
@dbus_service_property(_interface,
2049
signature="b",
1282
2050
access="readwrite")
1283
2051
def ApprovedByDefault_dbus_property(self, value=None):
1284
2052
if value is None: # get
1285
2053
return dbus.Boolean(self.approved_by_default)
1286
2054
self.approved_by_default = bool(value)
1287
2055
1288
2056
# ApprovalDelay - property
1289
@dbus_service_property(_interface, signature="t",
2057
@dbus_service_property(_interface,
2058
signature="t",
1290
2059
access="readwrite")
1291
2060
def ApprovalDelay_dbus_property(self, value=None):
1292
2061
if value is None: # get
1293
return dbus.UInt64(self.approval_delay_milliseconds())
2062
return dbus.UInt64(self.approval_delay.total_seconds()
2063
* 1000)
1294
2064
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1295
2065
1296
2066
# ApprovalDuration - property
1297
@dbus_service_property(_interface, signature="t",
2067
@dbus_service_property(_interface,
2068
signature="t",
1298
2069
access="readwrite")
1299
2070
def ApprovalDuration_dbus_property(self, value=None):
1300
2071
if value is None: # get
1301
return dbus.UInt64(timedelta_to_milliseconds(
1302
self.approval_duration))
2072
return dbus.UInt64(self.approval_duration.total_seconds()
2073
* 1000)
1303
2074
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1304
2075
1305
2076
# Name - property
2077
@dbus_annotations(
2078
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1306
2079
@dbus_service_property(_interface, signature="s", access="read")
1307
2080
def Name_dbus_property(self):
1308
2081
return dbus.String(self.name)
1309
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
1310
2090
# Fingerprint - property
2091
@dbus_annotations(
2092
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1311
2093
@dbus_service_property(_interface, signature="s", access="read")
1312
2094
def Fingerprint_dbus_property(self):
1313
2095
return dbus.String(self.fingerprint)
1314
2096
1315
2097
# Host - property
1316
@dbus_service_property(_interface, signature="s",
2098
@dbus_service_property(_interface,
2099
signature="s",
1317
2100
access="readwrite")
1318
2101
def Host_dbus_property(self, value=None):
1319
2102
if value is None: # get
1320
2103
return dbus.String(self.host)
1321
self.host = unicode(value)
1322
2104
self.host = str(value)
2105
1323
2106
# Created - property
2107
@dbus_annotations(
2108
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1324
2109
@dbus_service_property(_interface, signature="s", access="read")
1325
2110
def Created_dbus_property(self):
1326
2111
return datetime_to_dbus(self.created)
1327
2112
1328
2113
# LastEnabled - property
1329
2114
@dbus_service_property(_interface, signature="s", access="read")
1330
2115
def LastEnabled_dbus_property(self):
1331
2116
return datetime_to_dbus(self.last_enabled)
1332
2117
1333
2118
# Enabled - property
1334
@dbus_service_property(_interface, signature="b",
2119
@dbus_service_property(_interface,
2120
signature="b",
1335
2121
access="readwrite")
1336
2122
def Enabled_dbus_property(self, value=None):
1337
2123
if value is None: # get
1340
2126
self.enable()
1341
2127
else:
1342
2128
self.disable()
1343
2129
1344
2130
# LastCheckedOK - property
1345
@dbus_service_property(_interface, signature="s",
2131
@dbus_service_property(_interface,
2132
signature="s",
1346
2133
access="readwrite")
1347
2134
def LastCheckedOK_dbus_property(self, value=None):
1348
2135
if value is not None:
1349
2136
self.checked_ok()
1350
2137
return
1351
2138
return datetime_to_dbus(self.last_checked_ok)
1352
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
1353
2145
# Expires - property
1354
2146
@dbus_service_property(_interface, signature="s", access="read")
1355
2147
def Expires_dbus_property(self):
1356
2148
return datetime_to_dbus(self.expires)
1357
2149
1358
2150
# LastApprovalRequest - property
1359
2151
@dbus_service_property(_interface, signature="s", access="read")
1360
2152
def LastApprovalRequest_dbus_property(self):
1361
2153
return datetime_to_dbus(self.last_approval_request)
1362
2154
1363
2155
# Timeout - property
1364
@dbus_service_property(_interface, signature="t",
2156
@dbus_service_property(_interface,
2157
signature="t",
1365
2158
access="readwrite")
1366
2159
def Timeout_dbus_property(self, value=None):
1367
2160
if value is None: # get
1368
return dbus.UInt64(self.timeout_milliseconds())
2161
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2162
old_timeout = self.timeout
1369
2163
self.timeout = datetime.timedelta(0, 0, 0, value)
1370
# Reschedule timeout
2164
# Reschedule disabling
1371
2165
if self.enabled:
1372
2166
now = datetime.datetime.utcnow()
1373
time_to_die = timedelta_to_milliseconds(
1374
(self.last_checked_ok + self.timeout) - now)
1375
if time_to_die <= 0:
2167
self.expires += self.timeout - old_timeout
2168
if self.expires <= now:
1376
2169
# The timeout has passed
1377
2170
self.disable()
1378
2171
else:
1379
self.expires = (now +
1380
datetime.timedelta(milliseconds =
1381
time_to_die))
1382
2172
if (getattr(self, "disable_initiator_tag", None)
1383
2173
is None):
1384
2174
return
1385
gobject.source_remove(self.disable_initiator_tag)
1386
self.disable_initiator_tag = (gobject.timeout_add
1387
(time_to_die,
1388
self.disable))
1389
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
1390
2180
# ExtendedTimeout - property
1391
@dbus_service_property(_interface, signature="t",
2181
@dbus_service_property(_interface,
2182
signature="t",
1392
2183
access="readwrite")
1393
2184
def ExtendedTimeout_dbus_property(self, value=None):
1394
2185
if value is None: # get
1395
return dbus.UInt64(self.extended_timeout_milliseconds())
2186
return dbus.UInt64(self.extended_timeout.total_seconds()
2187
* 1000)
1396
2188
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1397
2189
1398
2190
# Interval - property
1399
@dbus_service_property(_interface, signature="t",
2191
@dbus_service_property(_interface,
2192
signature="t",
1400
2193
access="readwrite")
1401
2194
def Interval_dbus_property(self, value=None):
1402
2195
if value is None: # get
1403
return dbus.UInt64(self.interval_milliseconds())
2196
return dbus.UInt64(self.interval.total_seconds() * 1000)
1404
2197
self.interval = datetime.timedelta(0, 0, 0, value)
1405
2198
if getattr(self, "checker_initiator_tag", None) is None:
1406
2199
return
1407
2200
if self.enabled:
1408
2201
# Reschedule checker run
1409
gobject.source_remove(self.checker_initiator_tag)
1410
self.checker_initiator_tag = (gobject.timeout_add
1411
(value, self.start_checker))
1412
self.start_checker() # Start one now, too
1413
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
1414
2207
# Checker - property
1415
@dbus_service_property(_interface, signature="s",
2208
@dbus_service_property(_interface,
2209
signature="s",
1416
2210
access="readwrite")
1417
2211
def Checker_dbus_property(self, value=None):
1418
2212
if value is None: # get
1419
2213
return dbus.String(self.checker_command)
1420
self.checker_command = unicode(value)
1421
2214
self.checker_command = str(value)
2215
1422
2216
# CheckerRunning - property
1423
@dbus_service_property(_interface, signature="b",
2217
@dbus_service_property(_interface,
2218
signature="b",
1424
2219
access="readwrite")
1425
2220
def CheckerRunning_dbus_property(self, value=None):
1426
2221
if value is None: # get
1429
2224
self.start_checker()
1430
2225
else:
1431
2226
self.stop_checker()
1432
2227
1433
2228
# ObjectPath - property
2229
@dbus_annotations(
2230
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2231
"org.freedesktop.DBus.Deprecated": "true"})
1434
2232
@dbus_service_property(_interface, signature="o", access="read")
1435
2233
def ObjectPath_dbus_property(self):
1436
return self.dbus_object_path # is already a dbus.ObjectPath
1437
2234
return self.dbus_object_path # is already a dbus.ObjectPath
2235
1438
2236
# Secret = property
1439
@dbus_service_property(_interface, signature="ay",
1440
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)
1441
2244
def Secret_dbus_property(self, value):
1442
self.secret = str(value)
1443
2245
self.secret = bytes(value)
2246
1444
2247
del _interface
1445
2248
1446
2249
1447
class ProxyClient(object):
1448
def __init__(self, child_pipe, fpr, address):
2250
class ProxyClient:
2251
def __init__(self, child_pipe, key_id, fpr, address):
1449
2252
self._pipe = child_pipe
1450
self._pipe.send(('init', fpr, address))
2253
self._pipe.send(('init', key_id, fpr, address))
1451
2254
if not self._pipe.recv():
1452
raise KeyError()
1453
2255
raise KeyError(key_id or fpr)
2256
1454
2257
def __getattribute__(self, name):
1455
2258
if name == '_pipe':
1456
2259
return super(ProxyClient, self).__getattribute__(name)
1459
2262
if data[0] == 'data':
1460
2263
return data[1]
1461
2264
if data[0] == 'function':
2265
1462
2266
def func(*args, **kwargs):
1463
2267
self._pipe.send(('funcall', name, args, kwargs))
1464
2268
return self._pipe.recv()[1]
2269
1465
2270
return func
1466
2271
1467
2272
def __setattr__(self, name, value):
1468
2273
if name == '_pipe':
1469
2274
return super(ProxyClient, self).__setattr__(name, value)
1470
2275
self._pipe.send(('setattr', name, value))
1471
2276
1472
2277
1473
class ClientDBusTransitional(ClientDBus):
1474
__metaclass__ = AlternateDBusNamesMetaclass
1475
1476
1477
2278
class ClientHandler(socketserver.BaseRequestHandler, object):
1478
2279
"""A class to handle client connections.
1479
2280
1480
2281
Instantiated once for each connection to handle it.
1481
2282
Note: This will run in its own forked process."""
1482
2283
1483
2284
def handle(self):
1484
2285
with contextlib.closing(self.server.child_pipe) as child_pipe:
1485
2286
logger.info("TCP connection from: %s",
1486
unicode(self.client_address))
2287
str(self.client_address))
1487
2288
logger.debug("Pipe FD: %d",
1488
2289
self.server.child_pipe.fileno())
1489
1490
session = (gnutls.connection
1491
.ClientSession(self.request,
1492
gnutls.connection
1493
.X509Credentials()))
1494
1495
# Note: gnutls.connection.X509Credentials is really a
1496
# generic GnuTLS certificate credentials object so long as
1497
# no X.509 keys are added to it. Therefore, we can use it
1498
# here despite using OpenPGP certificates.
1499
1500
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1501
# "+AES-256-CBC", "+SHA1",
1502
# "+COMP-NULL", "+CTYPE-OPENPGP",
1503
# "+DHE-DSS"))
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"))
1504
2297
# Use a fallback default, since this MUST be set.
1505
2298
priority = self.server.gnutls_priority
1506
2299
if priority is None:
1507
2300
priority = "NORMAL"
1508
(gnutls.library.functions
1509
.gnutls_priority_set_direct(session._c_object,
1510
priority, None))
1511
2301
gnutls.priority_set_direct(session._c_object,
2302
priority.encode("utf-8"),
2303
None)
2304
1512
2305
# Start communication using the Mandos protocol
1513
2306
# Get protocol number
1514
2307
line = self.request.makefile().readline()
1515
2308
logger.debug("Protocol version: %r", line)
1516
2309
try:
1517
2310
if int(line.strip().split()[0]) > 1:
1518
raise RuntimeError
2311
raise RuntimeError(line)
1519
2312
except (ValueError, IndexError, RuntimeError) as error:
1520
2313
logger.error("Unknown protocol version: %s", error)
1521
2314
return
1522
2315
1523
2316
# Start GnuTLS connection
1524
2317
try:
1525
2318
session.handshake()
1526
except gnutls.errors.GNUTLSError as error:
2319
except gnutls.Error as error:
1527
2320
logger.warning("Handshake failed: %s", error)
1528
2321
# Do not run session.bye() here: the session is not
1529
2322
# established. Just abandon the request.
1530
2323
return
1531
2324
logger.debug("Handshake succeeded")
1532
2325
1533
2326
approval_required = False
1534
2327
try:
1535
try:
1536
fpr = self.fingerprint(self.peer_certificate
1537
(session))
1538
except (TypeError,
1539
gnutls.errors.GNUTLSError) as error:
1540
logger.warning("Bad certificate: %s", error)
1541
return
1542
logger.debug("Fingerprint: %s", fpr)
1543
1544
try:
1545
client = ProxyClient(child_pipe, fpr,
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,
1546
2350
self.client_address)
1547
2351
except KeyError:
1548
2352
return
1549
1550
if self.server.use_dbus:
1551
# Emit D-Bus signal
1552
client.NewRequest(str(self.client_address))
1553
2353
1554
2354
if client.approval_delay:
1555
2355
delay = client.approval_delay
1556
2356
client.approvals_pending += 1
1557
2357
approval_required = True
1558
2358
1559
2359
while True:
1560
2360
if not client.enabled:
1561
2361
logger.info("Client %s is disabled",
1562
client.name)
2362
client.name)
1563
2363
if self.server.use_dbus:
1564
2364
# Emit D-Bus signal
1565
2365
client.Rejected("Disabled")
1566
2366
return
1567
2367
1568
2368
if client.approved or not client.approval_delay:
1569
#We are approved or approval is disabled
2369
# We are approved or approval is disabled
1570
2370
break
1571
2371
elif client.approved is None:
1572
2372
logger.info("Client %s needs approval",
1574
2374
if self.server.use_dbus:
1575
2375
# Emit D-Bus signal
1576
2376
client.NeedApproval(
1577
client.approval_delay_milliseconds(),
1578
client.approved_by_default)
2377
client.approval_delay.total_seconds()
2378
* 1000, client.approved_by_default)
1579
2379
else:
1580
2380
logger.warning("Client %s was not approved",
1581
2381
client.name)
1583
2383
# Emit D-Bus signal
1584
2384
client.Rejected("Denied")
1585
2385
return
1586
1587
#wait until timeout or approved
2386
2387
# wait until timeout or approved
1588
2388
time = datetime.datetime.now()
1589
2389
client.changedstate.acquire()
1590
(client.changedstate.wait
1591
(float(client.timedelta_to_milliseconds(delay)
1592
/ 1000)))
2390
client.changedstate.wait(delay.total_seconds())
1593
2391
client.changedstate.release()
1594
2392
time2 = datetime.datetime.now()
1595
2393
if (time2 - time) >= delay:
1605
2403
break
1606
2404
else:
1607
2405
delay -= time2 - time
1608
1609
sent_size = 0
1610
while sent_size < len(client.secret):
1611
try:
1612
sent = session.send(client.secret[sent_size:])
1613
except gnutls.errors.GNUTLSError as error:
1614
logger.warning("gnutls send failed")
1615
return
1616
logger.debug("Sent: %d, remaining: %d",
1617
sent, len(client.secret)
1618
- (sent_size + sent))
1619
sent_size += sent
1620
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
1621
2414
logger.info("Sending secret to %s", client.name)
1622
2415
# bump the timeout using extended_timeout
1623
client.checked_ok(client.extended_timeout)
2416
client.bump_timeout(client.extended_timeout)
1624
2417
if self.server.use_dbus:
1625
2418
# Emit D-Bus signal
1626
2419
client.GotSecret()
1627
2420
1628
2421
finally:
1629
2422
if approval_required:
1630
2423
client.approvals_pending -= 1
1631
2424
try:
1632
2425
session.bye()
1633
except gnutls.errors.GNUTLSError as error:
1634
logger.warning("GnuTLS bye failed")
1635
2426
except gnutls.Error as error:
2427
logger.warning("GnuTLS bye failed",
2428
exc_info=error)
2429
1636
2430
@staticmethod
1637
2431
def peer_certificate(session):
1638
"Return the peer's OpenPGP certificate as a bytestring"
1639
# If not an OpenPGP certificate...
1640
if (gnutls.library.functions
1641
.gnutls_certificate_type_get(session._c_object)
1642
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1643
# ...do the normal thing
1644
return session.peer_certificate
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""
1645
2448
list_size = ctypes.c_uint(1)
1646
cert_list = (gnutls.library.functions
1647
.gnutls_certificate_get_peers
2449
cert_list = (gnutls.certificate_get_peers
1648
2450
(session._c_object, ctypes.byref(list_size)))
1649
2451
if not bool(cert_list) and list_size.value != 0:
1650
raise gnutls.errors.GNUTLSError("error getting peer"
1651
" certificate")
2452
raise gnutls.Error("error getting peer certificate")
1652
2453
if list_size.value == 0:
1653
2454
return None
1654
2455
cert = cert_list[0]
1655
2456
return ctypes.string_at(cert.data, cert.size)
1656
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
1657
2493
@staticmethod
1658
2494
def fingerprint(openpgp):
1659
2495
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1660
2496
# New GnuTLS "datum" with the OpenPGP public key
1661
datum = (gnutls.library.types
1662
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1663
ctypes.POINTER
1664
(ctypes.c_ubyte)),
1665
ctypes.c_uint(len(openpgp))))
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)))
1666
2501
# New empty GnuTLS certificate
1667
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1668
(gnutls.library.functions
1669
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2502
crt = gnutls.openpgp_crt_t()
2503
gnutls.openpgp_crt_init(ctypes.byref(crt))
1670
2504
# Import the OpenPGP public key into the certificate
1671
(gnutls.library.functions
1672
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1673
gnutls.library.constants
1674
.GNUTLS_OPENPGP_FMT_RAW))
2505
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2506
gnutls.OPENPGP_FMT_RAW)
1675
2507
# Verify the self signature in the key
1676
2508
crtverify = ctypes.c_uint()
1677
(gnutls.library.functions
1678
.gnutls_openpgp_crt_verify_self(crt, 0,
1679
ctypes.byref(crtverify)))
2509
gnutls.openpgp_crt_verify_self(crt, 0,
2510
ctypes.byref(crtverify))
1680
2511
if crtverify.value != 0:
1681
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1682
raise (gnutls.errors.CertificateSecurityError
1683
("Verify failed"))
2512
gnutls.openpgp_crt_deinit(crt)
2513
raise gnutls.CertificateSecurityError(code
2514
=crtverify.value)
1684
2515
# New buffer for the fingerprint
1685
2516
buf = ctypes.create_string_buffer(20)
1686
2517
buf_len = ctypes.c_size_t()
1687
2518
# Get the fingerprint from the certificate into the buffer
1688
(gnutls.library.functions
1689
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1690
ctypes.byref(buf_len)))
2519
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2520
ctypes.byref(buf_len))
1691
2521
# Deinit the certificate
1692
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2522
gnutls.openpgp_crt_deinit(crt)
1693
2523
# Convert the buffer to a Python bytestring
1694
2524
fpr = ctypes.string_at(buf, buf_len.value)
1695
2525
# Convert the bytestring to hexadecimal notation
1697
2527
return hex_fpr
1698
2528
1699
2529
1700
class MultiprocessingMixIn(object):
2530
class MultiprocessingMixIn:
1701
2531
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2532
1702
2533
def sub_process_main(self, request, address):
1703
2534
try:
1704
2535
self.finish_request(request, address)
1705
2536
except Exception:
1706
2537
self.handle_error(request, address)
1707
2538
self.close_request(request)
1708
2539
1709
2540
def process_request(self, request, address):
1710
2541
"""Start a new process to process the request."""
1711
proc = multiprocessing.Process(target = self.sub_process_main,
1712
args = (request,
1713
address))
2542
proc = multiprocessing.Process(target=self.sub_process_main,
2543
args=(request, address))
1714
2544
proc.start()
1715
2545
return proc
1716
2546
1717
2547
1718
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2548
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1719
2549
""" adds a pipe to the MixIn """
2550
1720
2551
def process_request(self, request, client_address):
1721
2552
"""Overrides and wraps the original process_request().
1722
2553
1723
2554
This function creates a new pipe in self.pipe
1724
2555
"""
1725
2556
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1726
2557
1727
2558
proc = MultiprocessingMixIn.process_request(self, request,
1728
2559
client_address)
1729
2560
self.child_pipe.close()
1730
2561
self.add_pipe(parent_pipe, proc)
1731
2562
1732
2563
def add_pipe(self, parent_pipe, proc):
1733
2564
"""Dummy function; override as necessary"""
1734
raise NotImplementedError
2565
raise NotImplementedError()
1735
2566
1736
2567
1737
2568
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1738
socketserver.TCPServer, object):
2569
socketserver.TCPServer):
1739
2570
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1740
2571
1741
2572
Attributes:
1742
2573
enabled: Boolean; whether this server is activated yet
1743
2574
interface: None or a network interface name (string)
1744
2575
use_ipv6: Boolean; to use IPv6 or not
1745
2576
"""
2577
1746
2578
def __init__(self, server_address, RequestHandlerClass,
1747
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
"""
1748
2585
self.interface = interface
1749
2586
if use_ipv6:
1750
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.
1751
2615
socketserver.TCPServer.__init__(self, server_address,
1752
2616
RequestHandlerClass)
2617
1753
2618
def server_bind(self):
1754
2619
"""This overrides the normal server_bind() function
1755
2620
to bind to an interface if one was specified, and also NOT to
1756
2621
bind to an address or port if they were not specified."""
2622
global SO_BINDTODEVICE
1757
2623
if self.interface is not None:
1758
2624
if SO_BINDTODEVICE is None:
1759
logger.error("SO_BINDTODEVICE does not exist;"
1760
" cannot bind to interface %s",
1761
self.interface)
1762
else:
1763
try:
1764
self.socket.setsockopt(socket.SOL_SOCKET,
1765
SO_BINDTODEVICE,
1766
str(self.interface
1767
+ '\0'))
1768
except socket.error as error:
1769
if error[0] == errno.EPERM:
1770
logger.error("No permission to"
1771
" bind to interface %s",
1772
self.interface)
1773
elif error[0] == errno.ENOPROTOOPT:
1774
logger.error("SO_BINDTODEVICE not available;"
1775
" cannot bind to interface %s",
1776
self.interface)
1777
else:
1778
raise
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
1779
2646
# Only bind(2) the socket if we really need to.
1780
2647
if self.server_address[0] or self.server_address[1]:
2648
if self.server_address[1]:
2649
self.allow_reuse_address = True
1781
2650
if not self.server_address[0]:
1782
2651
if self.address_family == socket.AF_INET6:
1783
any_address = "::" # in6addr_any
2652
any_address = "::" # in6addr_any
1784
2653
else:
1785
any_address = socket.INADDR_ANY
2654
any_address = "0.0.0.0" # INADDR_ANY
1786
2655
self.server_address = (any_address,
1787
2656
self.server_address[1])
1788
2657
elif not self.server_address[1]:
1789
self.server_address = (self.server_address[0],
1790
0)
2658
self.server_address = (self.server_address[0], 0)
1791
2659
# if self.interface:
1792
2660
# self.server_address = (self.server_address[0],
1793
2661
# 0, # port
1799
2667
1800
2668
class MandosServer(IPv6_TCPServer):
1801
2669
"""Mandos server.
1802
2670
1803
2671
Attributes:
1804
2672
clients: set of Client objects
1805
2673
gnutls_priority GnuTLS priority string
1806
2674
use_dbus: Boolean; to emit D-Bus signals or not
1807
1808
Assumes a gobject.MainLoop event loop.
2675
2676
Assumes a GLib.MainLoop event loop.
1809
2677
"""
2678
1810
2679
def __init__(self, server_address, RequestHandlerClass,
1811
interface=None, use_ipv6=True, clients=None,
1812
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):
1813
2686
self.enabled = False
1814
2687
self.clients = clients
1815
2688
if self.clients is None:
1818
2691
self.gnutls_priority = gnutls_priority
1819
2692
IPv6_TCPServer.__init__(self, server_address,
1820
2693
RequestHandlerClass,
1821
interface = interface,
1822
use_ipv6 = use_ipv6)
2694
interface=interface,
2695
use_ipv6=use_ipv6,
2696
socketfd=socketfd)
2697
1823
2698
def server_activate(self):
1824
2699
if self.enabled:
1825
2700
return socketserver.TCPServer.server_activate(self)
1826
2701
1827
2702
def enable(self):
1828
2703
self.enabled = True
1829
2704
1830
2705
def add_pipe(self, parent_pipe, proc):
1831
2706
# Call "handle_ipc" for both data and EOF events
1832
gobject.io_add_watch(parent_pipe.fileno(),
1833
gobject.IO_IN | gobject.IO_HUP,
1834
functools.partial(self.handle_ipc,
1835
parent_pipe =
1836
parent_pipe,
1837
proc = proc))
1838
1839
def handle_ipc(self, source, condition, parent_pipe=None,
1840
proc = None, client_object=None):
1841
condition_names = {
1842
gobject.IO_IN: "IN", # There is data to read.
1843
gobject.IO_OUT: "OUT", # Data can be written (without
1844
# blocking).
1845
gobject.IO_PRI: "PRI", # There is urgent data to read.
1846
gobject.IO_ERR: "ERR", # Error condition.
1847
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1848
# broken, usually for pipes and
1849
# sockets).
1850
}
1851
conditions_string = ' | '.join(name
1852
for cond, name in
1853
condition_names.iteritems()
1854
if cond & condition)
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):
1855
2718
# error, or the other end of multiprocessing.Pipe has closed
1856
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2719
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1857
2720
# Wait for other process to exit
1858
2721
proc.join()
1859
2722
return False
1860
2723
1861
2724
# Read a request from the child
1862
2725
request = parent_pipe.recv()
1863
2726
command = request[0]
1864
2727
1865
2728
if command == 'init':
1866
fpr = request[1]
1867
address = request[2]
1868
1869
for c in self.clients.itervalues():
1870
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:
1871
2741
client = c
1872
2742
break
1873
2743
else:
1874
logger.info("Client not found for fingerprint: %s, ad"
1875
"dress: %s", fpr, address)
2744
logger.info("Client not found for key ID: %s, address"
2745
": %s", key_id or fpr, address)
1876
2746
if self.use_dbus:
1877
2747
# Emit D-Bus signal
1878
mandos_dbus_service.ClientNotFound(fpr,
2748
mandos_dbus_service.ClientNotFound(key_id or fpr,
1879
2749
address[0])
1880
2750
parent_pipe.send(False)
1881
2751
return False
1882
1883
gobject.io_add_watch(parent_pipe.fileno(),
1884
gobject.IO_IN | gobject.IO_HUP,
1885
functools.partial(self.handle_ipc,
1886
parent_pipe =
1887
parent_pipe,
1888
proc = proc,
1889
client_object =
1890
client))
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))
1891
2760
parent_pipe.send(True)
1892
2761
# remove the old hook in favor of the new above hook on
1893
2762
# same fileno
1896
2765
funcname = request[1]
1897
2766
args = request[2]
1898
2767
kwargs = request[3]
1899
2768
1900
2769
parent_pipe.send(('data', getattr(client_object,
1901
2770
funcname)(*args,
1902
**kwargs)))
1903
2771
**kwargs)))
2772
1904
2773
if command == 'getattr':
1905
2774
attrname = request[1]
1906
if callable(client_object.__getattribute__(attrname)):
1907
parent_pipe.send(('function',))
2775
if isinstance(client_object.__getattribute__(attrname),
2776
collections.abc.Callable):
2777
parent_pipe.send(('function', ))
1908
2778
else:
1909
parent_pipe.send(('data', client_object
1910
.__getattribute__(attrname)))
1911
2779
parent_pipe.send((
2780
'data', client_object.__getattribute__(attrname)))
2781
1912
2782
if command == 'setattr':
1913
2783
attrname = request[1]
1914
2784
value = request[2]
1915
2785
setattr(client_object, attrname, value)
1916
2786
1917
2787
return True
1918
2788
1919
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
1920
2891
def string_to_delta(interval):
1921
2892
"""Parse a string and return a datetime.timedelta
1922
1923
>>> string_to_delta('7d')
1924
datetime.timedelta(7)
1925
>>> string_to_delta('60s')
1926
datetime.timedelta(0, 60)
1927
>>> string_to_delta('60m')
1928
datetime.timedelta(0, 3600)
1929
>>> string_to_delta('24h')
1930
datetime.timedelta(1)
1931
>>> string_to_delta('1w')
1932
datetime.timedelta(7)
1933
>>> string_to_delta('5m 30s')
1934
datetime.timedelta(0, 330)
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
1935
2906
"""
2907
2908
try:
2909
return rfc3339_duration_to_delta(interval)
2910
except ValueError:
2911
pass
2912
1936
2913
timevalue = datetime.timedelta(0)
1937
2914
for s in interval.split():
1938
2915
try:
1939
suffix = unicode(s[-1])
2916
suffix = s[-1]
1940
2917
value = int(s[:-1])
1941
2918
if suffix == "d":
1942
2919
delta = datetime.timedelta(value)
1949
2926
elif suffix == "w":
1950
2927
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1951
2928
else:
1952
raise ValueError("Unknown suffix %r" % suffix)
1953
except (ValueError, IndexError) as e:
2929
raise ValueError("Unknown suffix {!r}".format(suffix))
2930
except IndexError as e:
1954
2931
raise ValueError(*(e.args))
1955
2932
timevalue += delta
1956
2933
return timevalue
1957
2934
1958
2935
1959
def daemon(nochdir = False, noclose = False):
2936
def daemon(nochdir=False, noclose=False):
1960
2937
"""See daemon(3). Standard BSD Unix function.
1961
2938
1962
2939
This should really exist as os.daemon, but it doesn't (yet)."""
1963
2940
if os.fork():
1964
2941
sys.exit()
1969
2946
sys.exit()
1970
2947
if not noclose:
1971
2948
# Close all standard open file descriptors
1972
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2949
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1973
2950
if not stat.S_ISCHR(os.fstat(null).st_mode):
1974
2951
raise OSError(errno.ENODEV,
1975
"%s not a character device"
1976
% os.path.devnull)
2952
"{} not a character device"
2953
.format(os.devnull))
1977
2954
os.dup2(null, sys.stdin.fileno())
1978
2955
os.dup2(null, sys.stdout.fileno())
1979
2956
os.dup2(null, sys.stderr.fileno())
1982
2959
1983
2960
1984
2961
def main():
1985
2962
1986
2963
##################################################################
1987
2964
# Parsing of options, both command line and config file
1988
2965
1989
2966
parser = argparse.ArgumentParser()
1990
2967
parser.add_argument("-v", "--version", action="version",
1991
version = "%%(prog)s %s" % version,
2968
version="%(prog)s {}".format(version),
1992
2969
help="show version number and exit")
1993
2970
parser.add_argument("-i", "--interface", metavar="IF",
1994
2971
help="Bind to interface IF")
2000
2977
help="Run self-test")
2001
2978
parser.add_argument("--debug", action="store_true",
2002
2979
help="Debug mode; run in foreground and log"
2003
" to terminal")
2980
" to terminal", default=None)
2004
2981
parser.add_argument("--debuglevel", metavar="LEVEL",
2005
2982
help="Debug level for stdout output")
2006
2983
parser.add_argument("--priority", help="GnuTLS"
2013
2990
" files")
2014
2991
parser.add_argument("--no-dbus", action="store_false",
2015
2992
dest="use_dbus", help="Do not provide D-Bus"
2016
" system bus interface")
2993
" system bus interface", default=None)
2017
2994
parser.add_argument("--no-ipv6", action="store_false",
2018
dest="use_ipv6", help="Do not use IPv6")
2995
dest="use_ipv6", help="Do not use IPv6",
2996
default=None)
2019
2997
parser.add_argument("--no-restore", action="store_false",
2020
2998
dest="restore", help="Do not restore stored"
2021
" 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")
2022
3003
parser.add_argument("--statedir", metavar="DIR",
2023
3004
help="Directory to save/restore state in")
2024
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
2025
3011
options = parser.parse_args()
2026
2027
if options.check:
2028
import doctest
2029
doctest.testmod()
2030
sys.exit()
2031
3012
2032
3013
# Default values for config file for server-global settings
2033
server_defaults = { "interface": "",
2034
"address": "",
2035
"port": "",
2036
"debug": "False",
2037
"priority":
2038
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2039
"servicename": "Mandos",
2040
"use_dbus": "True",
2041
"use_ipv6": "True",
2042
"debuglevel": "",
2043
"restore": "True",
2044
"statedir": "/var/lib/mandos"
2045
}
2046
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
2047
3037
# Parse config file for server-global settings
2048
server_config = configparser.SafeConfigParser(server_defaults)
3038
server_config = configparser.ConfigParser(server_defaults)
2049
3039
del server_defaults
2050
server_config.read(os.path.join(options.configdir,
2051
"mandos.conf"))
2052
# 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
2053
3042
server_settings = server_config.defaults()
2054
3043
# Use the appropriate methods on the non-string config options
2055
for option in ("debug", "use_dbus", "use_ipv6"):
3044
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3045
"foreground", "zeroconf"):
2056
3046
server_settings[option] = server_config.getboolean("DEFAULT",
2057
3047
option)
2058
3048
if server_settings["port"]:
2059
3049
server_settings["port"] = server_config.getint("DEFAULT",
2060
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"])
2061
3060
del server_config
2062
3061
2063
3062
# Override the settings from the config file with command line
2064
3063
# options, if set.
2065
3064
for option in ("interface", "address", "port", "debug",
2066
"priority", "servicename", "configdir",
2067
"use_dbus", "use_ipv6", "debuglevel", "restore",
2068
"statedir"):
3065
"priority", "servicename", "configdir", "use_dbus",
3066
"use_ipv6", "debuglevel", "restore", "statedir",
3067
"socket", "foreground", "zeroconf"):
2069
3068
value = getattr(options, option)
2070
3069
if value is not None:
2071
3070
server_settings[option] = value
2072
3071
del options
2073
3072
# Force all strings to be unicode
2074
3073
for option in server_settings.keys():
2075
if type(server_settings[option]) is str:
2076
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
2077
3084
# Now we have our good server settings in "server_settings"
2078
3085
2079
3086
##################################################################
2080
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
2081
3093
# For convenience
2082
3094
debug = server_settings["debug"]
2083
3095
debuglevel = server_settings["debuglevel"]
2085
3097
use_ipv6 = server_settings["use_ipv6"]
2086
3098
stored_state_path = os.path.join(server_settings["statedir"],
2087
3099
stored_state_file)
2088
3100
foreground = server_settings["foreground"]
3101
zeroconf = server_settings["zeroconf"]
3102
2089
3103
if debug:
2090
3104
initlogger(debug, logging.DEBUG)
2091
3105
else:
2094
3108
else:
2095
3109
level = getattr(logging, debuglevel.upper())
2096
3110
initlogger(debug, level)
2097
3111
2098
3112
if server_settings["servicename"] != "Mandos":
2099
syslogger.setFormatter(logging.Formatter
2100
('Mandos (%s) [%%(process)d]:'
2101
' %%(levelname)s: %%(message)s'
2102
% server_settings["servicename"]))
2103
3113
syslogger.setFormatter(
3114
logging.Formatter('Mandos ({}) [%(process)d]:'
3115
' %(levelname)s: %(message)s'.format(
3116
server_settings["servicename"])))
3117
2104
3118
# Parse config file with clients
2105
client_config = configparser.SafeConfigParser(Client
2106
.client_defaults)
3119
client_config = configparser.ConfigParser(Client.client_defaults)
2107
3120
client_config.read(os.path.join(server_settings["configdir"],
2108
3121
"clients.conf"))
2109
3122
2110
3123
global mandos_dbus_service
2111
3124
mandos_dbus_service = None
2112
2113
tcp_server = MandosServer((server_settings["address"],
2114
server_settings["port"]),
2115
ClientHandler,
2116
interface=(server_settings["interface"]
2117
or None),
2118
use_ipv6=use_ipv6,
2119
gnutls_priority=
2120
server_settings["priority"],
2121
use_dbus=use_dbus)
2122
if not debug:
2123
pidfilename = "/var/run/mandos.pid"
2124
try:
2125
pidfile = open(pidfilename, "w")
2126
except IOError:
2127
logger.error("Could not open file %r", pidfilename)
2128
2129
try:
2130
uid = pwd.getpwnam("_mandos").pw_uid
2131
gid = pwd.getpwnam("_mandos").pw_gid
2132
except KeyError:
2133
try:
2134
uid = pwd.getpwnam("mandos").pw_uid
2135
gid = pwd.getpwnam("mandos").pw_gid
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
2136
3155
except KeyError:
2137
try:
2138
uid = pwd.getpwnam("nobody").pw_uid
2139
gid = pwd.getpwnam("nobody").pw_gid
2140
except KeyError:
2141
uid = 65534
2142
gid = 65534
3156
continue
3157
else:
3158
uid = 65534
3159
gid = 65534
2143
3160
try:
2144
3161
os.setgid(gid)
2145
3162
os.setuid(uid)
3163
if debug:
3164
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3165
gid))
2146
3166
except OSError as error:
2147
if error[0] != errno.EPERM:
2148
raise error
2149
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
2150
3172
if debug:
2151
3173
# Enable all possible GnuTLS debugging
2152
3174
2153
3175
# "Use a log level over 10 to enable all debugging options."
2154
3176
# - GnuTLS manual
2155
gnutls.library.functions.gnutls_global_set_log_level(11)
2156
2157
@gnutls.library.types.gnutls_log_func
3177
gnutls.global_set_log_level(11)
3178
3179
@gnutls.log_func
2158
3180
def debug_gnutls(level, string):
2159
3181
logger.debug("GnuTLS: %s", string[:-1])
2160
2161
(gnutls.library.functions
2162
.gnutls_global_set_log_function(debug_gnutls))
2163
3182
3183
gnutls.global_set_log_function(debug_gnutls)
3184
2164
3185
# Redirect stdin so all checkers get /dev/null
2165
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3186
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2166
3187
os.dup2(null, sys.stdin.fileno())
2167
3188
if null > 2:
2168
3189
os.close(null)
2169
3190
2170
3191
# Need to fork before connecting to D-Bus
2171
if not debug:
3192
if not foreground:
2172
3193
# Close all input and output, do double fork, etc.
2173
3194
daemon()
2174
2175
gobject.threads_init()
2176
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
2177
3201
global main_loop
2178
3202
# From the Avahi example code
2179
DBusGMainLoop(set_as_default=True )
2180
main_loop = gobject.MainLoop()
3203
DBusGMainLoop(set_as_default=True)
3204
main_loop = GLib.MainLoop()
2181
3205
bus = dbus.SystemBus()
2182
3206
# End of Avahi example code
2183
3207
if use_dbus:
2184
3208
try:
2185
3209
bus_name = dbus.service.BusName("se.recompile.Mandos",
2186
bus, do_not_queue=True)
2187
old_bus_name = (dbus.service.BusName
2188
("se.bsnet.fukt.Mandos", bus,
2189
do_not_queue=True))
2190
except dbus.exceptions.NameExistsException as e:
2191
logger.error(unicode(e) + ", disabling D-Bus")
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)
2192
3217
use_dbus = False
2193
3218
server_settings["use_dbus"] = False
2194
3219
tcp_server.use_dbus = False
2195
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2196
service = AvahiServiceToSyslog(name =
2197
server_settings["servicename"],
2198
servicetype = "_mandos._tcp",
2199
protocol = protocol, bus = bus)
2200
if server_settings["interface"]:
2201
service.interface = (if_nametoindex
2202
(str(server_settings["interface"])))
2203
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
2204
3231
global multiprocessing_manager
2205
3232
multiprocessing_manager = multiprocessing.Manager()
2206
3233
2207
3234
client_class = Client
2208
3235
if use_dbus:
2209
client_class = functools.partial(ClientDBusTransitional,
2210
bus = bus)
2211
3236
client_class = functools.partial(ClientDBus, bus=bus)
3237
2212
3238
client_settings = Client.config_parser(client_config)
2213
3239
old_client_settings = {}
2214
3240
clients_data = {}
2215
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
2216
3250
# Get client data and settings from last running state.
2217
3251
if server_settings["restore"]:
2218
3252
try:
2219
3253
with open(stored_state_path, "rb") as stored_state:
2220
clients_data, old_client_settings = (pickle.load
2221
(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"))
2222
3304
os.remove(stored_state_path)
2223
3305
except IOError as e:
2224
logger.warning("Could not load persistent state: {0}"
2225
.format(e))
2226
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)
2227
3312
raise
2228
3313
except EOFError as e:
2229
3314
logger.warning("Could not load persistent state: "
2230
"EOFError: {0}".format(e))
2231
3315
"EOFError:",
3316
exc_info=e)
3317
2232
3318
with PGPEngine() as pgp:
2233
for client_name, client in clients_data.iteritems():
3319
for client_name, client in clients_data.items():
3320
# Skip removed clients
3321
if client_name not in client_settings:
3322
continue
3323
2234
3324
# Decide which value to use after restoring saved state.
2235
3325
# We have three different values: Old config file,
2236
3326
# new config file, and saved state.
2241
3331
# For each value in new config, check if it
2242
3332
# differs from the old config value (Except for
2243
3333
# the "secret" attribute)
2244
if (name != "secret" and
2245
value != old_client_settings[client_name]
2246
[name]):
3334
if (name != "secret"
3335
and (value !=
3336
old_client_settings[client_name][name])):
2247
3337
client[name] = value
2248
3338
except KeyError:
2249
3339
pass
2250
3340
2251
3341
# Clients who has passed its expire date can still be
2252
# enabled if its last checker was successful. Clients
2253
# whose checker failed before we stored its state is
2254
# assumed to have failed all checkers during downtime.
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.
2255
3346
if client["enabled"]:
2256
3347
if datetime.datetime.utcnow() >= client["expires"]:
2257
3348
if not client["last_checked_ok"]:
2258
3349
logger.warning(
2259
"disabling client {0} - Client never "
2260
"performed a successfull checker"
2261
.format(client["name"]))
3350
"disabling client {} - Client never "
3351
"performed a successful checker".format(
3352
client_name))
2262
3353
client["enabled"] = False
2263
3354
elif client["last_checker_status"] != 0:
2264
3355
logger.warning(
2265
"disabling client {0} - Client "
2266
"last checker failed with error code {1}"
2267
.format(client["name"],
2268
client["last_checker_status"]))
3356
"disabling client {} - Client last"
3357
" checker failed with error code"
3358
" {}".format(
3359
client_name,
3360
client["last_checker_status"]))
2269
3361
client["enabled"] = False
2270
3362
else:
2271
client["expires"] = (datetime.datetime
2272
.utcnow()
2273
+ client["timeout"])
3363
client["expires"] = (
3364
datetime.datetime.utcnow()
3365
+ client["timeout"])
2274
3366
logger.debug("Last checker succeeded,"
2275
" keeping {0} enabled"
2276
.format(client["name"]))
3367
" keeping {} enabled".format(
3368
client_name))
2277
3369
try:
2278
client["secret"] = (
2279
pgp.decrypt(client["encrypted_secret"],
2280
client_settings[client_name]
2281
["secret"]))
3370
client["secret"] = pgp.decrypt(
3371
client["encrypted_secret"],
3372
client_settings[client_name]["secret"])
2282
3373
except PGPError:
2283
3374
# If decryption fails, we use secret from new settings
2284
logger.debug("Failed to decrypt {0} old secret"
2285
.format(client_name))
2286
client["secret"] = (
2287
client_settings[client_name]["secret"])
3375
logger.debug("Failed to decrypt {} old secret".format(
3376
client_name))
3377
client["secret"] = (client_settings[client_name]
3378
["secret"])
2288
3379
2289
2290
3380
# Add/remove clients based on new changes made to config
2291
3381
for client_name in (set(old_client_settings)
2292
3382
- set(client_settings)):
2295
3385
- set(old_client_settings)):
2296
3386
clients_data[client_name] = client_settings[client_name]
2297
3387
2298
# Create clients all clients
2299
for client_name, client in clients_data.iteritems():
3388
# Create all client objects
3389
for client_name, client in clients_data.items():
2300
3390
tcp_server.clients[client_name] = client_class(
2301
name = client_name, settings = client)
2302
3391
name=client_name,
3392
settings=client,
3393
server_settings=server_settings)
3394
2303
3395
if not tcp_server.clients:
2304
3396
logger.warning("No clients defined")
2305
2306
if not debug:
2307
try:
2308
with pidfile:
2309
pid = os.getpid()
2310
pidfile.write(str(pid) + "\n".encode("utf-8"))
2311
del pidfile
2312
except IOError:
2313
logger.error("Could not write to file %r with PID %d",
2314
pidfilename, pid)
2315
except NameError:
2316
# "pidfile" was never created
2317
pass
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
2318
3408
del pidfilename
2319
signal.signal(signal.SIGINT, signal.SIG_IGN)
2320
2321
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2322
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2323
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
2324
3414
if use_dbus:
2325
class MandosDBusService(dbus.service.Object):
3415
3416
@alternate_dbus_interfaces(
3417
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3418
class MandosDBusService(DBusObjectWithObjectManager):
2326
3419
"""A D-Bus proxy object"""
3420
2327
3421
def __init__(self):
2328
3422
dbus.service.Object.__init__(self, bus, "/")
3423
2329
3424
_interface = "se.recompile.Mandos"
2330
3425
2331
3426
@dbus.service.signal(_interface, signature="o")
2332
3427
def ClientAdded(self, objpath):
2333
3428
"D-Bus signal"
2334
3429
pass
2335
3430
2336
3431
@dbus.service.signal(_interface, signature="ss")
2337
def ClientNotFound(self, fingerprint, address):
3432
def ClientNotFound(self, key_id, address):
2338
3433
"D-Bus signal"
2339
3434
pass
2340
3435
3436
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3437
"true"})
2341
3438
@dbus.service.signal(_interface, signature="os")
2342
3439
def ClientRemoved(self, objpath, name):
2343
3440
"D-Bus signal"
2344
3441
pass
2345
3442
3443
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3444
"true"})
2346
3445
@dbus.service.method(_interface, out_signature="ao")
2347
3446
def GetAllClients(self):
2348
3447
"D-Bus method"
2349
return dbus.Array(c.dbus_object_path
2350
for c in
2351
tcp_server.clients.itervalues())
2352
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"})
2353
3453
@dbus.service.method(_interface,
2354
3454
out_signature="a{oa{sv}}")
2355
3455
def GetAllClientsWithProperties(self):
2356
3456
"D-Bus method"
2357
3457
return dbus.Dictionary(
2358
((c.dbus_object_path, c.GetAll(""))
2359
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()},
2360
3461
signature="oa{sv}")
2361
3462
2362
3463
@dbus.service.method(_interface, in_signature="o")
2363
3464
def RemoveClient(self, object_path):
2364
3465
"D-Bus method"
2365
for c in tcp_server.clients.itervalues():
3466
for c in tcp_server.clients.values():
2366
3467
if c.dbus_object_path == object_path:
2367
3468
del tcp_server.clients[c.name]
2368
3469
c.remove_from_connection()
2369
# Don't signal anything except ClientRemoved
3470
# Don't signal the disabling
2370
3471
c.disable(quiet=True)
2371
# Emit D-Bus signal
2372
self.ClientRemoved(object_path, c.name)
3472
# Emit D-Bus signal for removal
3473
self.client_removed_signal(c)
2373
3474
return
2374
3475
raise KeyError(object_path)
2375
3476
2376
3477
del _interface
2377
2378
class MandosDBusServiceTransitional(MandosDBusService):
2379
__metaclass__ = AlternateDBusNamesMetaclass
2380
mandos_dbus_service = MandosDBusServiceTransitional()
2381
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
2382
3522
def cleanup():
2383
3523
"Cleanup function; run on exit"
2384
service.cleanup()
2385
2386
multiprocessing.active_children()
3524
if zeroconf:
3525
service.cleanup()
3526
3527
mp.active_children()
3528
wn.close()
2387
3529
if not (tcp_server.clients or client_settings):
2388
3530
return
2389
3531
2390
3532
# Store client before exiting. Secrets are encrypted with key
2391
3533
# based on what config file has. If config file is
2392
3534
# removed/edited, old secret will thus be unrecovable.
2393
3535
clients = {}
2394
3536
with PGPEngine() as pgp:
2395
for client in tcp_server.clients.itervalues():
3537
for client in tcp_server.clients.values():
2396
3538
key = client_settings[client.name]["secret"]
2397
3539
client.encrypted_secret = pgp.encrypt(client.secret,
2398
3540
key)
2399
3541
client_dict = {}
2400
3542
2401
3543
# A list of attributes that can not be pickled
2402
3544
# + secret.
2403
exclude = set(("bus", "changedstate", "secret",
2404
"checker"))
2405
for name, typ in (inspect.getmembers
2406
(dbus.service.Object)):
3545
exclude = {"bus", "changedstate", "secret",
3546
"checker", "server_settings"}
3547
for name, typ in inspect.getmembers(dbus.service
3548
.Object):
2407
3549
exclude.add(name)
2408
3550
2409
3551
client_dict["encrypted_secret"] = (client
2410
3552
.encrypted_secret)
2411
3553
for attr in client.client_structure:
2412
3554
if attr not in exclude:
2413
3555
client_dict[attr] = getattr(client, attr)
2414
3556
2415
3557
clients[client.name] = client_dict
2416
3558
del client_settings[client.name]["secret"]
2417
3559
2418
3560
try:
2419
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2420
prefix="clients-",
2421
dir=os.path.dirname
2422
(stored_state_path))
2423
with os.fdopen(tempfd, "wb") as stored_state:
2424
pickle.dump((clients, client_settings), stored_state)
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
2425
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
3572
if not debug:
2430
3573
try:
2431
3574
os.remove(tempname)
2432
3575
except NameError:
2433
3576
pass
2434
if e.errno not in set((errno.ENOENT, errno.EACCES,
2435
errno.EEXIST)):
2436
raise e
2437
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)
3583
raise
3584
2438
3585
# Delete all clients, and settings from config
2439
3586
while tcp_server.clients:
2440
3587
name, client = tcp_server.clients.popitem()
2441
3588
if use_dbus:
2442
3589
client.remove_from_connection()
2443
# Don't signal anything except ClientRemoved
3590
# Don't signal the disabling
2444
3591
client.disable(quiet=True)
3592
# Emit D-Bus signal for removal
2445
3593
if use_dbus:
2446
# Emit D-Bus signal
2447
mandos_dbus_service.ClientRemoved(client
2448
.dbus_object_path,
2449
client.name)
3594
mandos_dbus_service.client_removed_signal(client)
2450
3595
client_settings.clear()
2451
3596
2452
3597
atexit.register(cleanup)
2453
2454
for client in tcp_server.clients.itervalues():
3598
3599
for client in tcp_server.clients.values():
2455
3600
if use_dbus:
2456
# Emit D-Bus signal
2457
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3601
# Emit D-Bus signal for adding
3602
mandos_dbus_service.client_added_signal(client)
2458
3603
# Need to initiate checking of clients
2459
3604
if client.enabled:
2460
3605
client.init_checker()
2461
3606
2462
3607
tcp_server.enable()
2463
3608
tcp_server.server_activate()
2464
3609
2465
3610
# Find out what port we got
2466
service.port = tcp_server.socket.getsockname()[1]
3611
if zeroconf:
3612
service.port = tcp_server.socket.getsockname()[1]
2467
3613
if use_ipv6:
2468
3614
logger.info("Now listening on address %r, port %d,"
2469
" flowinfo %d, scope_id %d"
2470
% tcp_server.socket.getsockname())
3615
" flowinfo %d, scope_id %d",
3616
*tcp_server.socket.getsockname())
2471
3617
else: # IPv4
2472
logger.info("Now listening on address %r, port %d"
2473
% tcp_server.socket.getsockname())
2474
2475
#service.interface = tcp_server.socket.getsockname()[3]
2476
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
2477
3623
try:
2478
# From the Avahi example code
2479
try:
2480
service.activate()
2481
except dbus.exceptions.DBusException as error:
2482
logger.critical("DBusException: %s", error)
2483
cleanup()
2484
sys.exit(1)
2485
# End of Avahi example code
2486
2487
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2488
lambda *args, **kwargs:
2489
(tcp_server.handle_request
2490
(*args[2:], **kwargs) or True))
2491
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
2492
3640
logger.debug("Starting main loop")
2493
3641
main_loop.run()
2494
3642
except AvahiError as error:
2495
logger.critical("AvahiError: %s", error)
3643
logger.critical("Avahi Error", exc_info=error)
2496
3644
cleanup()
2497
3645
sys.exit(1)
2498
3646
except KeyboardInterrupt:
2503
3651
# Must run before the D-Bus bus name gets deregistered
2504
3652
cleanup()
2505
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
3670
2506
3671
if __name__ == '__main__':
2507
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