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- Committer: Teddy Hogeborn
- Date: 2011-12-31 23:05:34 UTC
- Revision ID: teddy@recompile.se-20111231230534-o5w0uhwx30gwhmk7
Updated year in copyright notices.
- files added:
- initramfs-tools-hook-conf
- files removed:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python3 -bI
2
# -*- 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
#
1
#!/usr/bin/python
2
# -*- mode: python; coding: utf-8 -*-
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2020 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
14
# Copyright © 2008-2012 Teddy Hogeborn
15
# Copyright © 2008-2012 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
28
#
26
#
29
27
# You should have received a copy of the GNU General Public License
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
32
31
# Contact the authors at <mandos@recompile.se>.
33
#
32
#
34
33
35
34
from __future__ import (division, absolute_import, print_function,
36
35
unicode_literals)
37
36
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
37
import SocketServer as socketserver
47
38
import socket
48
39
import argparse
49
40
import datetime
50
41
import errno
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
55
49
import sys
56
50
import re
57
51
import os
66
60
import struct
67
61
import fcntl
68
62
import functools
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
63
import cPickle as pickle
73
64
import multiprocessing
74
65
import types
75
66
import binascii
76
67
import tempfile
77
import itertools
78
import collections
79
import codecs
80
import unittest
81
import random
82
import shlex
83
68
84
69
import dbus
85
70
import dbus.service
86
import gi
87
from gi.repository import GLib
71
import gobject
72
import avahi
88
73
from dbus.mainloop.glib import DBusGMainLoop
89
74
import ctypes
90
75
import ctypes.util
91
76
import xml.dom.minidom
92
77
import inspect
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:
78
import GnuPGInterface
79
80
try:
122
81
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
123
82
except AttributeError:
124
83
try:
125
# This is where SO_BINDTODEVICE was up to and including Python
126
# 2.6, and also 3.2:
127
84
from IN import SO_BINDTODEVICE
128
85
except ImportError:
129
# In Python 2.7 it seems to have been removed entirely.
130
# Try running the C preprocessor:
131
try:
132
cc = subprocess.Popen(["cc", "--language=c", "-E",
133
"/dev/stdin"],
134
stdin=subprocess.PIPE,
135
stdout=subprocess.PIPE)
136
stdout = cc.communicate(
137
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
138
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
139
except (OSError, ValueError, IndexError):
140
# No value found
141
SO_BINDTODEVICE = None
142
143
if sys.version_info < (3, 2):
144
configparser.Configparser = configparser.SafeConfigParser
145
146
version = "1.8.14"
86
SO_BINDTODEVICE = None
87
88
version = "1.4.1"
147
89
stored_state_file = "clients.pickle"
148
90
149
91
logger = logging.getLogger()
150
logging.captureWarnings(True) # Show warnings via the logging system
151
syslogger = None
92
syslogger = (logging.handlers.SysLogHandler
93
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
94
address = str("/dev/log")))
152
95
153
96
try:
154
if_nametoindex = ctypes.cdll.LoadLibrary(
155
ctypes.util.find_library("c")).if_nametoindex
97
if_nametoindex = (ctypes.cdll.LoadLibrary
98
(ctypes.util.find_library("c"))
99
.if_nametoindex)
156
100
except (OSError, AttributeError):
157
158
101
def if_nametoindex(interface):
159
102
"Get an interface index the hard way, i.e. using fcntl()"
160
103
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
161
104
with contextlib.closing(socket.socket()) as s:
162
105
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
163
struct.pack(b"16s16x", interface))
164
interface_index = struct.unpack("I", ifreq[16:20])[0]
106
struct.pack(str("16s16x"),
107
interface))
108
interface_index = struct.unpack(str("I"),
109
ifreq[16:20])[0]
165
110
return interface_index
166
111
167
112
168
def copy_function(func):
169
"""Make a copy of a function"""
170
if sys.version_info.major == 2:
171
return types.FunctionType(func.func_code,
172
func.func_globals,
173
func.func_name,
174
func.func_defaults,
175
func.func_closure)
176
else:
177
return types.FunctionType(func.__code__,
178
func.__globals__,
179
func.__name__,
180
func.__defaults__,
181
func.__closure__)
182
183
184
113
def initlogger(debug, level=logging.WARNING):
185
114
"""init logger and add loglevel"""
186
187
global syslogger
188
syslogger = (logging.handlers.SysLogHandler(
189
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
190
address="/dev/log"))
115
191
116
syslogger.setFormatter(logging.Formatter
192
117
('Mandos [%(process)d]: %(levelname)s:'
193
118
' %(message)s'))
194
119
logger.addHandler(syslogger)
195
120
196
121
if debug:
197
122
console = logging.StreamHandler()
198
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
208
133
pass
209
134
210
135
211
class PGPEngine:
136
class PGPEngine(object):
212
137
"""A simple class for OpenPGP symmetric encryption & decryption"""
213
214
138
def __init__(self):
139
self.gnupg = GnuPGInterface.GnuPG()
215
140
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
216
self.gpg = "gpg"
217
try:
218
output = subprocess.check_output(["gpgconf"])
219
for line in output.splitlines():
220
name, text, path = line.split(b":")
221
if name == b"gpg":
222
self.gpg = path
223
break
224
except OSError as e:
225
if e.errno != errno.ENOENT:
226
raise
227
self.gnupgargs = ['--batch',
228
'--homedir', self.tempdir,
229
'--force-mdc',
230
'--quiet']
231
# Only GPG version 1 has the --no-use-agent option.
232
if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
233
self.gnupgargs.append("--no-use-agent")
234
141
self.gnupg = GnuPGInterface.GnuPG()
142
self.gnupg.options.meta_interactive = False
143
self.gnupg.options.homedir = self.tempdir
144
self.gnupg.options.extra_args.extend(['--force-mdc',
145
'--quiet',
146
'--no-use-agent'])
147
235
148
def __enter__(self):
236
149
return self
237
238
def __exit__(self, exc_type, exc_value, traceback):
150
151
def __exit__ (self, exc_type, exc_value, traceback):
239
152
self._cleanup()
240
153
return False
241
154
242
155
def __del__(self):
243
156
self._cleanup()
244
157
245
158
def _cleanup(self):
246
159
if self.tempdir is not None:
247
160
# Delete contents of tempdir
248
161
for root, dirs, files in os.walk(self.tempdir,
249
topdown=False):
162
topdown = False):
250
163
for filename in files:
251
164
os.remove(os.path.join(root, filename))
252
165
for dirname in dirs:
254
167
# Remove tempdir
255
168
os.rmdir(self.tempdir)
256
169
self.tempdir = None
257
170
258
171
def password_encode(self, password):
259
172
# Passphrase can not be empty and can not contain newlines or
260
173
# NUL bytes. So we prefix it and hex encode it.
261
encoded = b"mandos" + binascii.hexlify(password)
262
if len(encoded) > 2048:
263
# GnuPG can't handle long passwords, so encode differently
264
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
265
.replace(b"\n", b"\\n")
266
.replace(b"\0", b"\\x00"))
267
return encoded
268
174
return b"mandos" + binascii.hexlify(password)
175
269
176
def encrypt(self, data, password):
270
passphrase = self.password_encode(password)
271
with tempfile.NamedTemporaryFile(
272
dir=self.tempdir) as passfile:
273
passfile.write(passphrase)
274
passfile.flush()
275
proc = subprocess.Popen([self.gpg, '--symmetric',
276
'--passphrase-file',
277
passfile.name]
278
+ self.gnupgargs,
279
stdin=subprocess.PIPE,
280
stdout=subprocess.PIPE,
281
stderr=subprocess.PIPE)
282
ciphertext, err = proc.communicate(input=data)
283
if proc.returncode != 0:
284
raise PGPError(err)
177
self.gnupg.passphrase = self.password_encode(password)
178
with open(os.devnull) as devnull:
179
try:
180
proc = self.gnupg.run(['--symmetric'],
181
create_fhs=['stdin', 'stdout'],
182
attach_fhs={'stderr': devnull})
183
with contextlib.closing(proc.handles['stdin']) as f:
184
f.write(data)
185
with contextlib.closing(proc.handles['stdout']) as f:
186
ciphertext = f.read()
187
proc.wait()
188
except IOError as e:
189
raise PGPError(e)
190
self.gnupg.passphrase = None
285
191
return ciphertext
286
192
287
193
def decrypt(self, data, password):
288
passphrase = self.password_encode(password)
289
with tempfile.NamedTemporaryFile(
290
dir=self.tempdir) as passfile:
291
passfile.write(passphrase)
292
passfile.flush()
293
proc = subprocess.Popen([self.gpg, '--decrypt',
294
'--passphrase-file',
295
passfile.name]
296
+ self.gnupgargs,
297
stdin=subprocess.PIPE,
298
stdout=subprocess.PIPE,
299
stderr=subprocess.PIPE)
300
decrypted_plaintext, err = proc.communicate(input=data)
301
if proc.returncode != 0:
302
raise PGPError(err)
194
self.gnupg.passphrase = self.password_encode(password)
195
with open(os.devnull) as devnull:
196
try:
197
proc = self.gnupg.run(['--decrypt'],
198
create_fhs=['stdin', 'stdout'],
199
attach_fhs={'stderr': devnull})
200
with contextlib.closing(proc.handles['stdin'] ) as f:
201
f.write(data)
202
with contextlib.closing(proc.handles['stdout']) as f:
203
decrypted_plaintext = f.read()
204
proc.wait()
205
except IOError as e:
206
raise PGPError(e)
207
self.gnupg.passphrase = None
303
208
return decrypted_plaintext
304
209
305
210
306
# Pretend that we have an Avahi module
307
class avahi:
308
"""This isn't so much a class as it is a module-like namespace."""
309
IF_UNSPEC = -1 # avahi-common/address.h
310
PROTO_UNSPEC = -1 # avahi-common/address.h
311
PROTO_INET = 0 # avahi-common/address.h
312
PROTO_INET6 = 1 # avahi-common/address.h
313
DBUS_NAME = "org.freedesktop.Avahi"
314
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
315
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
316
DBUS_PATH_SERVER = "/"
317
318
@staticmethod
319
def string_array_to_txt_array(t):
320
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
321
for s in t), signature="ay")
322
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
323
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
324
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
325
SERVER_INVALID = 0 # avahi-common/defs.h
326
SERVER_REGISTERING = 1 # avahi-common/defs.h
327
SERVER_RUNNING = 2 # avahi-common/defs.h
328
SERVER_COLLISION = 3 # avahi-common/defs.h
329
SERVER_FAILURE = 4 # avahi-common/defs.h
330
331
211
332
212
class AvahiError(Exception):
333
213
def __init__(self, value, *args, **kwargs):
334
214
self.value = value
335
return super(AvahiError, self).__init__(value, *args,
336
**kwargs)
337
215
super(AvahiError, self).__init__(value, *args, **kwargs)
216
def __unicode__(self):
217
return unicode(repr(self.value))
338
218
339
219
class AvahiServiceError(AvahiError):
340
220
pass
341
221
342
343
222
class AvahiGroupError(AvahiError):
344
223
pass
345
224
346
225
347
class AvahiService:
226
class AvahiService(object):
348
227
"""An Avahi (Zeroconf) service.
349
228
350
229
Attributes:
351
230
interface: integer; avahi.IF_UNSPEC or an interface index.
352
231
Used to optionally bind to the specified interface.
353
232
name: string; Example: 'Mandos'
354
233
type: string; Example: '_mandos._tcp'.
355
See <https://www.iana.org/assignments/service-names-port-numbers>
234
See <http://www.dns-sd.org/ServiceTypes.html>
356
235
port: integer; what port to announce
357
236
TXT: list of strings; TXT record for the service
358
237
domain: string; Domain to publish on, default to .local if empty.
364
243
server: D-Bus Server
365
244
bus: dbus.SystemBus()
366
245
"""
367
368
def __init__(self,
369
interface=avahi.IF_UNSPEC,
370
name=None,
371
servicetype=None,
372
port=None,
373
TXT=None,
374
domain="",
375
host="",
376
max_renames=32768,
377
protocol=avahi.PROTO_UNSPEC,
378
bus=None):
246
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
247
servicetype = None, port = None, TXT = None,
248
domain = "", host = "", max_renames = 32768,
249
protocol = avahi.PROTO_UNSPEC, bus = None):
379
250
self.interface = interface
380
251
self.name = name
381
252
self.type = servicetype
390
261
self.server = None
391
262
self.bus = bus
392
263
self.entry_group_state_changed_match = None
393
394
def rename(self, remove=True):
264
def rename(self):
395
265
"""Derived from the Avahi example code"""
396
266
if self.rename_count >= self.max_renames:
397
267
logger.critical("No suitable Zeroconf service name found"
398
268
" after %i retries, exiting.",
399
269
self.rename_count)
400
270
raise AvahiServiceError("Too many renames")
401
self.name = str(
402
self.server.GetAlternativeServiceName(self.name))
403
self.rename_count += 1
271
self.name = unicode(self.server
272
.GetAlternativeServiceName(self.name))
404
273
logger.info("Changing Zeroconf service name to %r ...",
405
274
self.name)
406
if remove:
407
self.remove()
275
self.remove()
408
276
try:
409
277
self.add()
410
278
except dbus.exceptions.DBusException as error:
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
279
logger.critical("DBusException: %s", error)
280
self.cleanup()
281
os._exit(1)
282
self.rename_count += 1
420
283
def remove(self):
421
284
"""Derived from the Avahi example code"""
422
285
if self.entry_group_state_changed_match is not None:
424
287
self.entry_group_state_changed_match = None
425
288
if self.group is not None:
426
289
self.group.Reset()
427
428
290
def add(self):
429
291
"""Derived from the Avahi example code"""
430
292
self.remove()
447
309
dbus.UInt16(self.port),
448
310
avahi.string_array_to_txt_array(self.TXT))
449
311
self.group.Commit()
450
451
312
def entry_group_state_changed(self, state, error):
452
313
"""Derived from the Avahi example code"""
453
314
logger.debug("Avahi entry group state change: %i", state)
454
315
455
316
if state == avahi.ENTRY_GROUP_ESTABLISHED:
456
317
logger.debug("Zeroconf service established.")
457
318
elif state == avahi.ENTRY_GROUP_COLLISION:
459
320
self.rename()
460
321
elif state == avahi.ENTRY_GROUP_FAILURE:
461
322
logger.critical("Avahi: Error in group state changed %s",
462
str(error))
463
raise AvahiGroupError("State changed: {!s}".format(error))
464
323
unicode(error))
324
raise AvahiGroupError("State changed: %s"
325
% unicode(error))
465
326
def cleanup(self):
466
327
"""Derived from the Avahi example code"""
467
328
if self.group is not None:
472
333
pass
473
334
self.group = None
474
335
self.remove()
475
476
336
def server_state_changed(self, state, error=None):
477
337
"""Derived from the Avahi example code"""
478
338
logger.debug("Avahi server state change: %i", state)
479
bad_states = {
480
avahi.SERVER_INVALID: "Zeroconf server invalid",
481
avahi.SERVER_REGISTERING: None,
482
avahi.SERVER_COLLISION: "Zeroconf server name collision",
483
avahi.SERVER_FAILURE: "Zeroconf server failure",
484
}
339
bad_states = { avahi.SERVER_INVALID:
340
"Zeroconf server invalid",
341
avahi.SERVER_REGISTERING: None,
342
avahi.SERVER_COLLISION:
343
"Zeroconf server name collision",
344
avahi.SERVER_FAILURE:
345
"Zeroconf server failure" }
485
346
if state in bad_states:
486
347
if bad_states[state] is not None:
487
348
if error is None:
490
351
logger.error(bad_states[state] + ": %r", error)
491
352
self.cleanup()
492
353
elif state == avahi.SERVER_RUNNING:
493
try:
494
self.add()
495
except dbus.exceptions.DBusException as error:
496
if (error.get_dbus_name()
497
== "org.freedesktop.Avahi.CollisionError"):
498
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)
354
self.add()
505
355
else:
506
356
if error is None:
507
357
logger.debug("Unknown state: %r", state)
508
358
else:
509
359
logger.debug("Unknown state: %r: %r", state, error)
510
511
360
def activate(self):
512
361
"""Derived from the Avahi example code"""
513
362
if self.server is None:
517
366
follow_name_owner_changes=True),
518
367
avahi.DBUS_INTERFACE_SERVER)
519
368
self.server.connect_to_signal("StateChanged",
520
self.server_state_changed)
369
self.server_state_changed)
521
370
self.server_state_changed(self.server.GetState())
522
371
523
524
372
class AvahiServiceToSyslog(AvahiService):
525
def rename(self, *args, **kwargs):
373
def rename(self):
526
374
"""Add the new name to the syslog messages"""
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)))
375
ret = AvahiService.rename(self)
376
syslogger.setFormatter(logging.Formatter
377
('Mandos (%s) [%%(process)d]:'
378
' %%(levelname)s: %%(message)s'
379
% self.name))
532
380
return ret
533
381
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).decode(
598
"utf-8", errors="replace")
599
return super(gnutls.Error, self).__init__(
600
message, *args)
601
602
class CertificateSecurityError(Error):
603
pass
604
605
class PointerTo:
606
def __init__(self, cls):
607
self.cls = cls
608
609
def from_param(self, obj):
610
if not isinstance(obj, self.cls):
611
raise TypeError("Not of type {}: {!r}"
612
.format(self.cls.__name__, obj))
613
return ctypes.byref(obj.from_param(obj))
614
615
class CastToVoidPointer:
616
def __init__(self, cls):
617
self.cls = cls
618
619
def from_param(self, obj):
620
if not isinstance(obj, self.cls):
621
raise TypeError("Not of type {}: {!r}"
622
.format(self.cls.__name__, obj))
623
return ctypes.cast(obj.from_param(obj), ctypes.c_void_p)
624
625
class With_from_param:
626
@classmethod
627
def from_param(cls, obj):
628
return obj._as_parameter_
629
630
# Classes
631
class Credentials(With_from_param):
632
def __init__(self):
633
self._as_parameter_ = gnutls.certificate_credentials_t()
634
gnutls.certificate_allocate_credentials(self)
635
self.type = gnutls.CRD_CERTIFICATE
636
637
def __del__(self):
638
gnutls.certificate_free_credentials(self)
639
640
class ClientSession(With_from_param):
641
def __init__(self, socket, credentials=None):
642
self._as_parameter_ = gnutls.session_t()
643
gnutls_flags = gnutls.CLIENT
644
if gnutls.check_version(b"3.5.6"):
645
gnutls_flags |= gnutls.NO_TICKETS
646
if gnutls.has_rawpk:
647
gnutls_flags |= gnutls.ENABLE_RAWPK
648
gnutls.init(self, gnutls_flags)
649
del gnutls_flags
650
gnutls.set_default_priority(self)
651
gnutls.transport_set_ptr(self, socket.fileno())
652
gnutls.handshake_set_private_extensions(self, True)
653
self.socket = socket
654
if credentials is None:
655
credentials = gnutls.Credentials()
656
gnutls.credentials_set(self, credentials.type,
657
credentials)
658
self.credentials = credentials
659
660
def __del__(self):
661
gnutls.deinit(self)
662
663
def handshake(self):
664
return gnutls.handshake(self)
665
666
def send(self, data):
667
data = bytes(data)
668
data_len = len(data)
669
while data_len > 0:
670
data_len -= gnutls.record_send(self, data[-data_len:],
671
data_len)
672
673
def bye(self):
674
return gnutls.bye(self, gnutls.SHUT_RDWR)
675
676
# Error handling functions
677
def _error_code(result):
678
"""A function to raise exceptions on errors, suitable
679
for the 'restype' attribute on ctypes functions"""
680
if result >= gnutls.E_SUCCESS:
681
return result
682
if result == gnutls.E_NO_CERTIFICATE_FOUND:
683
raise gnutls.CertificateSecurityError(code=result)
684
raise gnutls.Error(code=result)
685
686
def _retry_on_error(result, func, arguments,
687
_error_code=_error_code):
688
"""A function to retry on some errors, suitable
689
for the 'errcheck' attribute on ctypes functions"""
690
while result < gnutls.E_SUCCESS:
691
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
692
return _error_code(result)
693
result = func(*arguments)
694
return result
695
696
# Unless otherwise indicated, the function declarations below are
697
# all from the gnutls/gnutls.h C header file.
698
699
# Functions
700
priority_set_direct = _library.gnutls_priority_set_direct
701
priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,
702
ctypes.POINTER(ctypes.c_char_p)]
703
priority_set_direct.restype = _error_code
704
705
init = _library.gnutls_init
706
init.argtypes = [PointerTo(ClientSession), ctypes.c_int]
707
init.restype = _error_code
708
709
set_default_priority = _library.gnutls_set_default_priority
710
set_default_priority.argtypes = [ClientSession]
711
set_default_priority.restype = _error_code
712
713
record_send = _library.gnutls_record_send
714
record_send.argtypes = [ClientSession, ctypes.c_void_p,
715
ctypes.c_size_t]
716
record_send.restype = ctypes.c_ssize_t
717
record_send.errcheck = _retry_on_error
718
719
certificate_allocate_credentials = (
720
_library.gnutls_certificate_allocate_credentials)
721
certificate_allocate_credentials.argtypes = [
722
PointerTo(Credentials)]
723
certificate_allocate_credentials.restype = _error_code
724
725
certificate_free_credentials = (
726
_library.gnutls_certificate_free_credentials)
727
certificate_free_credentials.argtypes = [Credentials]
728
certificate_free_credentials.restype = None
729
730
handshake_set_private_extensions = (
731
_library.gnutls_handshake_set_private_extensions)
732
handshake_set_private_extensions.argtypes = [ClientSession,
733
ctypes.c_int]
734
handshake_set_private_extensions.restype = None
735
736
credentials_set = _library.gnutls_credentials_set
737
credentials_set.argtypes = [ClientSession, credentials_type_t,
738
CastToVoidPointer(Credentials)]
739
credentials_set.restype = _error_code
740
741
strerror = _library.gnutls_strerror
742
strerror.argtypes = [ctypes.c_int]
743
strerror.restype = ctypes.c_char_p
744
745
certificate_type_get = _library.gnutls_certificate_type_get
746
certificate_type_get.argtypes = [ClientSession]
747
certificate_type_get.restype = _error_code
748
749
certificate_get_peers = _library.gnutls_certificate_get_peers
750
certificate_get_peers.argtypes = [ClientSession,
751
ctypes.POINTER(ctypes.c_uint)]
752
certificate_get_peers.restype = ctypes.POINTER(datum_t)
753
754
global_set_log_level = _library.gnutls_global_set_log_level
755
global_set_log_level.argtypes = [ctypes.c_int]
756
global_set_log_level.restype = None
757
758
global_set_log_function = _library.gnutls_global_set_log_function
759
global_set_log_function.argtypes = [log_func]
760
global_set_log_function.restype = None
761
762
deinit = _library.gnutls_deinit
763
deinit.argtypes = [ClientSession]
764
deinit.restype = None
765
766
handshake = _library.gnutls_handshake
767
handshake.argtypes = [ClientSession]
768
handshake.restype = ctypes.c_int
769
handshake.errcheck = _retry_on_error
770
771
transport_set_ptr = _library.gnutls_transport_set_ptr
772
transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]
773
transport_set_ptr.restype = None
774
775
bye = _library.gnutls_bye
776
bye.argtypes = [ClientSession, close_request_t]
777
bye.restype = ctypes.c_int
778
bye.errcheck = _retry_on_error
779
780
check_version = _library.gnutls_check_version
781
check_version.argtypes = [ctypes.c_char_p]
782
check_version.restype = ctypes.c_char_p
783
784
_need_version = b"3.3.0"
785
if check_version(_need_version) is None:
786
raise self.Error("Needs GnuTLS {} or later"
787
.format(_need_version))
788
789
_tls_rawpk_version = b"3.6.6"
790
has_rawpk = bool(check_version(_tls_rawpk_version))
791
792
if has_rawpk:
793
# Types
794
class pubkey_st(ctypes.Structure):
795
_fields = []
796
pubkey_t = ctypes.POINTER(pubkey_st)
797
798
x509_crt_fmt_t = ctypes.c_int
799
800
# All the function declarations below are from
801
# gnutls/abstract.h
802
pubkey_init = _library.gnutls_pubkey_init
803
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
804
pubkey_init.restype = _error_code
805
806
pubkey_import = _library.gnutls_pubkey_import
807
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
808
x509_crt_fmt_t]
809
pubkey_import.restype = _error_code
810
811
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
812
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
813
ctypes.POINTER(ctypes.c_ubyte),
814
ctypes.POINTER(ctypes.c_size_t)]
815
pubkey_get_key_id.restype = _error_code
816
817
pubkey_deinit = _library.gnutls_pubkey_deinit
818
pubkey_deinit.argtypes = [pubkey_t]
819
pubkey_deinit.restype = None
820
else:
821
# All the function declarations below are from
822
# gnutls/openpgp.h
823
824
openpgp_crt_init = _library.gnutls_openpgp_crt_init
825
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
826
openpgp_crt_init.restype = _error_code
827
828
openpgp_crt_import = _library.gnutls_openpgp_crt_import
829
openpgp_crt_import.argtypes = [openpgp_crt_t,
830
ctypes.POINTER(datum_t),
831
openpgp_crt_fmt_t]
832
openpgp_crt_import.restype = _error_code
833
834
openpgp_crt_verify_self = \
835
_library.gnutls_openpgp_crt_verify_self
836
openpgp_crt_verify_self.argtypes = [
837
openpgp_crt_t,
838
ctypes.c_uint,
839
ctypes.POINTER(ctypes.c_uint),
840
]
841
openpgp_crt_verify_self.restype = _error_code
842
843
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
844
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
845
openpgp_crt_deinit.restype = None
846
847
openpgp_crt_get_fingerprint = (
848
_library.gnutls_openpgp_crt_get_fingerprint)
849
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
850
ctypes.c_void_p,
851
ctypes.POINTER(
852
ctypes.c_size_t)]
853
openpgp_crt_get_fingerprint.restype = _error_code
854
855
if check_version(b"3.6.4"):
856
certificate_type_get2 = _library.gnutls_certificate_type_get2
857
certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]
858
certificate_type_get2.restype = _error_code
859
860
# Remove non-public functions
861
del _error_code, _retry_on_error
862
863
864
def call_pipe(connection, # : multiprocessing.Connection
865
func, *args, **kwargs):
866
"""This function is meant to be called by multiprocessing.Process
867
868
This function runs func(*args, **kwargs), and writes the resulting
869
return value on the provided multiprocessing.Connection.
870
"""
871
connection.send(func(*args, **kwargs))
872
connection.close()
873
874
875
class Client:
382
def timedelta_to_milliseconds(td):
383
"Convert a datetime.timedelta() to milliseconds"
384
return ((td.days * 24 * 60 * 60 * 1000)
385
+ (td.seconds * 1000)
386
+ (td.microseconds // 1000))
387
388
class Client(object):
876
389
"""A representation of a client host served by this server.
877
390
878
391
Attributes:
879
392
approved: bool(); 'None' if not yet approved/disapproved
880
393
approval_delay: datetime.timedelta(); Time to wait for approval
881
394
approval_duration: datetime.timedelta(); Duration of one approval
882
checker: multiprocessing.Process(); a running checker process used
883
to see if the client lives. 'None' if no process is
884
running.
885
checker_callback_tag: a GLib event source tag, or None
395
checker: subprocess.Popen(); a running checker process used
396
to see if the client lives.
397
'None' if no process is running.
398
checker_callback_tag: a gobject event source tag, or None
886
399
checker_command: string; External command which is run to check
887
400
if client lives. %() expansions are done at
888
401
runtime with vars(self) as dict, so that for
889
402
instance %(name)s can be used in the command.
890
checker_initiator_tag: a GLib event source tag, or None
403
checker_initiator_tag: a gobject event source tag, or None
891
404
created: datetime.datetime(); (UTC) object creation
892
405
client_structure: Object describing what attributes a client has
893
406
and is used for storing the client at exit
894
407
current_checker_command: string; current running checker_command
895
disable_initiator_tag: a GLib event source tag, or None
408
disable_initiator_tag: a gobject event source tag, or None
896
409
enabled: bool()
897
410
fingerprint: string (40 or 32 hexadecimal digits); used to
898
uniquely identify an OpenPGP client
899
key_id: string (64 hexadecimal digits); used to uniquely identify
900
a client using raw public keys
411
uniquely identify the client
901
412
host: string; available for use by the checker command
902
413
interval: datetime.timedelta(); How often to start a new checker
903
414
last_approval_request: datetime.datetime(); (UTC) or None
904
415
last_checked_ok: datetime.datetime(); (UTC) or None
905
416
last_checker_status: integer between 0 and 255 reflecting exit
906
417
status of last checker. -1 reflects crashed
907
checker, -2 means no checker completed yet.
908
last_checker_signal: The signal which killed the last checker, if
909
last_checker_status is -1
418
checker, or None.
910
419
last_enabled: datetime.datetime(); (UTC) or None
911
420
name: string; from the config file, used in log messages and
912
421
D-Bus identifiers
913
422
secret: bytestring; sent verbatim (over TLS) to client
914
423
timeout: datetime.timedelta(); How long from last_checked_ok
915
424
until this client is disabled
916
extended_timeout: extra long timeout when secret has been sent
425
extended_timeout: extra long timeout when password has been sent
917
426
runtime_expansions: Allowed attributes for runtime expansion.
918
427
expires: datetime.datetime(); time (UTC) when a client will be
919
428
disabled, or None
920
server_settings: The server_settings dict from main()
921
429
"""
922
430
923
431
runtime_expansions = ("approval_delay", "approval_duration",
924
"created", "enabled", "expires", "key_id",
925
"fingerprint", "host", "interval",
926
"last_approval_request", "last_checked_ok",
432
"created", "enabled", "fingerprint",
433
"host", "interval", "last_checked_ok",
927
434
"last_enabled", "name", "timeout")
928
client_defaults = {
929
"timeout": "PT5M",
930
"extended_timeout": "PT15M",
931
"interval": "PT2M",
932
"checker": "fping -q -- %%(host)s",
933
"host": "",
934
"approval_delay": "PT0S",
935
"approval_duration": "PT1S",
936
"approved_by_default": "True",
937
"enabled": "True",
938
}
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)
939
460
940
461
@staticmethod
941
462
def config_parser(config):
949
470
for client_name in config.sections():
950
471
section = dict(config.items(client_name))
951
472
client = settings[client_name] = {}
952
473
953
474
client["host"] = section["host"]
954
475
# Reformat values from string types to Python types
955
476
client["approved_by_default"] = config.getboolean(
956
477
client_name, "approved_by_default")
957
478
client["enabled"] = config.getboolean(client_name,
958
479
"enabled")
959
960
# Uppercase and remove spaces from key_id and fingerprint
961
# for later comparison purposes with return value from the
962
# key_id() and fingerprint() functions
963
client["key_id"] = (section.get("key_id", "").upper()
964
.replace(" ", ""))
480
965
481
client["fingerprint"] = (section["fingerprint"].upper()
966
482
.replace(" ", ""))
967
483
if "secret" in section:
968
client["secret"] = codecs.decode(section["secret"]
969
.encode("utf-8"),
970
"base64")
484
client["secret"] = section["secret"].decode("base64")
971
485
elif "secfile" in section:
972
486
with open(os.path.expanduser(os.path.expandvars
973
487
(section["secfile"])),
974
488
"rb") as secfile:
975
489
client["secret"] = secfile.read()
976
490
else:
977
raise TypeError("No secret or secfile for section {}"
978
.format(section))
491
raise TypeError("No secret or secfile for section %s"
492
% section)
979
493
client["timeout"] = string_to_delta(section["timeout"])
980
494
client["extended_timeout"] = string_to_delta(
981
495
section["extended_timeout"])
987
501
client["checker_command"] = section["checker"]
988
502
client["last_approval_request"] = None
989
503
client["last_checked_ok"] = None
990
client["last_checker_status"] = -2
991
504
client["last_checker_status"] = None
505
992
506
return settings
993
994
def __init__(self, settings, name=None, server_settings=None):
507
508
509
def __init__(self, settings, name = None):
510
"""Note: the 'checker' key in 'config' sets the
511
'checker_command' attribute and *not* the 'checker'
512
attribute."""
995
513
self.name = name
996
if server_settings is None:
997
server_settings = {}
998
self.server_settings = server_settings
999
514
# adding all client settings
1000
for setting, value in settings.items():
515
for setting, value in settings.iteritems():
1001
516
setattr(self, setting, value)
1002
517
1003
518
if self.enabled:
1004
519
if not hasattr(self, "last_enabled"):
1005
520
self.last_enabled = datetime.datetime.utcnow()
1009
524
else:
1010
525
self.last_enabled = None
1011
526
self.expires = None
1012
527
1013
528
logger.debug("Creating client %r", self.name)
1014
logger.debug(" Key ID: %s", self.key_id)
529
# Uppercase and remove spaces from fingerprint for later
530
# comparison purposes with return value from the fingerprint()
531
# function
1015
532
logger.debug(" Fingerprint: %s", self.fingerprint)
1016
533
self.created = settings.get("created",
1017
534
datetime.datetime.utcnow())
1024
541
self.current_checker_command = None
1025
542
self.approved = None
1026
543
self.approvals_pending = 0
1027
self.changedstate = multiprocessing_manager.Condition(
1028
multiprocessing_manager.Lock())
1029
self.client_structure = [attr
1030
for attr in self.__dict__.keys()
544
self.changedstate = (multiprocessing_manager
545
.Condition(multiprocessing_manager
546
.Lock()))
547
self.client_structure = [attr for attr in
548
self.__dict__.iterkeys()
1031
549
if not attr.startswith("_")]
1032
550
self.client_structure.append("client_structure")
1033
1034
for name, t in inspect.getmembers(
1035
type(self), lambda obj: isinstance(obj, property)):
551
552
for name, t in inspect.getmembers(type(self),
553
lambda obj:
554
isinstance(obj,
555
property)):
1036
556
if not name.startswith("_"):
1037
557
self.client_structure.append(name)
1038
558
1039
559
# Send notice to process children that client state has changed
1040
560
def send_changedstate(self):
1041
561
with self.changedstate:
1042
562
self.changedstate.notify_all()
1043
563
1044
564
def enable(self):
1045
565
"""Start this client's checker and timeout hooks"""
1046
566
if getattr(self, "enabled", False):
1047
567
# Already enabled
1048
568
return
569
self.send_changedstate()
1049
570
self.expires = datetime.datetime.utcnow() + self.timeout
1050
571
self.enabled = True
1051
572
self.last_enabled = datetime.datetime.utcnow()
1052
573
self.init_checker()
1053
self.send_changedstate()
1054
574
1055
575
def disable(self, quiet=True):
1056
576
"""Disable this client."""
1057
577
if not getattr(self, "enabled", False):
1058
578
return False
1059
579
if not quiet:
580
self.send_changedstate()
581
if not quiet:
1060
582
logger.info("Disabling client %s", self.name)
1061
if getattr(self, "disable_initiator_tag", None) is not None:
1062
GLib.source_remove(self.disable_initiator_tag)
583
if getattr(self, "disable_initiator_tag", False):
584
gobject.source_remove(self.disable_initiator_tag)
1063
585
self.disable_initiator_tag = None
1064
586
self.expires = None
1065
if getattr(self, "checker_initiator_tag", None) is not None:
1066
GLib.source_remove(self.checker_initiator_tag)
587
if getattr(self, "checker_initiator_tag", False):
588
gobject.source_remove(self.checker_initiator_tag)
1067
589
self.checker_initiator_tag = None
1068
590
self.stop_checker()
1069
591
self.enabled = False
1070
if not quiet:
1071
self.send_changedstate()
1072
# Do not run this again if called by a GLib.timeout_add
592
# Do not run this again if called by a gobject.timeout_add
1073
593
return False
1074
594
1075
595
def __del__(self):
1076
596
self.disable()
1077
597
1078
598
def init_checker(self):
1079
599
# Schedule a new checker to be started an 'interval' from now,
1080
600
# and every interval from then on.
1081
if self.checker_initiator_tag is not None:
1082
GLib.source_remove(self.checker_initiator_tag)
1083
self.checker_initiator_tag = GLib.timeout_add(
1084
random.randrange(int(self.interval.total_seconds() * 1000
1085
+ 1)),
1086
self.start_checker)
601
self.checker_initiator_tag = (gobject.timeout_add
602
(self.interval_milliseconds(),
603
self.start_checker))
1087
604
# Schedule a disable() when 'timeout' has passed
1088
if self.disable_initiator_tag is not None:
1089
GLib.source_remove(self.disable_initiator_tag)
1090
self.disable_initiator_tag = GLib.timeout_add(
1091
int(self.timeout.total_seconds() * 1000), self.disable)
605
self.disable_initiator_tag = (gobject.timeout_add
606
(self.timeout_milliseconds(),
607
self.disable))
1092
608
# Also start a new checker *right now*.
1093
609
self.start_checker()
1094
1095
def checker_callback(self, source, condition, connection,
1096
command):
610
611
def checker_callback(self, pid, condition, command):
1097
612
"""The checker has completed, so take appropriate actions."""
1098
# Read return code from connection (see call_pipe)
1099
returncode = connection.recv()
1100
connection.close()
1101
if self.checker is not None:
1102
self.checker.join()
1103
613
self.checker_callback_tag = None
1104
614
self.checker = None
1105
1106
if returncode >= 0:
1107
self.last_checker_status = returncode
1108
self.last_checker_signal = None
615
if os.WIFEXITED(condition):
616
self.last_checker_status = os.WEXITSTATUS(condition)
1109
617
if self.last_checker_status == 0:
1110
618
logger.info("Checker for %(name)s succeeded",
1111
619
vars(self))
1112
620
self.checked_ok()
1113
621
else:
1114
logger.info("Checker for %(name)s failed", vars(self))
622
logger.info("Checker for %(name)s failed",
623
vars(self))
1115
624
else:
1116
625
self.last_checker_status = -1
1117
self.last_checker_signal = -returncode
1118
626
logger.warning("Checker for %(name)s crashed?",
1119
627
vars(self))
1120
return False
1121
1122
def checked_ok(self):
1123
"""Assert that the client has been seen, alive and well."""
1124
self.last_checked_ok = datetime.datetime.utcnow()
1125
self.last_checker_status = 0
1126
self.last_checker_signal = None
1127
self.bump_timeout()
1128
1129
def bump_timeout(self, timeout=None):
1130
"""Bump up the timeout for this client."""
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
"""
1131
635
if timeout is None:
1132
636
timeout = self.timeout
637
self.last_checked_ok = datetime.datetime.utcnow()
1133
638
if self.disable_initiator_tag is not None:
1134
GLib.source_remove(self.disable_initiator_tag)
1135
self.disable_initiator_tag = None
639
gobject.source_remove(self.disable_initiator_tag)
1136
640
if getattr(self, "enabled", False):
1137
self.disable_initiator_tag = GLib.timeout_add(
1138
int(timeout.total_seconds() * 1000), self.disable)
641
self.disable_initiator_tag = (gobject.timeout_add
642
(timedelta_to_milliseconds
643
(timeout), self.disable))
1139
644
self.expires = datetime.datetime.utcnow() + timeout
1140
645
1141
646
def need_approval(self):
1142
647
self.last_approval_request = datetime.datetime.utcnow()
1143
648
1144
649
def start_checker(self):
1145
650
"""Start a new checker subprocess if one is not running.
1146
651
1147
652
If a checker already exists, leave it running and do
1148
653
nothing."""
1149
654
# The reason for not killing a running checker is that if we
1150
# did that, and if a checker (for some reason) started running
1151
# slowly and taking more than 'interval' time, then the client
1152
# would inevitably timeout, since no checker would get a
1153
# chance to run to completion. If we instead leave running
655
# did that, then if a checker (for some reason) started
656
# running slowly and taking more than 'interval' time, the
657
# client would inevitably timeout, since no checker would get
658
# a chance to run to completion. If we instead leave running
1154
659
# checkers alone, the checker would have to take more time
1155
660
# than 'timeout' for the client to be disabled, which is as it
1156
661
# should be.
1157
1158
if self.checker is not None and not self.checker.is_alive():
1159
logger.warning("Checker was not alive; joining")
1160
self.checker.join()
1161
self.checker = None
662
663
# If a checker exists, make sure it is not a zombie
664
try:
665
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
666
except (AttributeError, OSError) as error:
667
if (isinstance(error, OSError)
668
and error.errno != errno.ECHILD):
669
raise error
670
else:
671
if pid:
672
logger.warning("Checker was a zombie")
673
gobject.source_remove(self.checker_callback_tag)
674
self.checker_callback(pid, status,
675
self.current_checker_command)
1162
676
# Start a new checker if needed
1163
677
if self.checker is None:
1164
# Escape attributes for the shell
1165
escaped_attrs = {
1166
attr: shlex.quote(str(getattr(self, attr)))
1167
for attr in self.runtime_expansions}
1168
678
try:
1169
command = self.checker_command % escaped_attrs
1170
except TypeError as error:
1171
logger.error('Could not format string "%s"',
1172
self.checker_command,
1173
exc_info=error)
1174
return True # Try again later
679
# In case checker_command has exactly one % operator
680
command = self.checker_command % self.host
681
except TypeError:
682
# Escape attributes for the shell
683
escaped_attrs = dict(
684
(attr,
685
re.escape(unicode(str(getattr(self, attr, "")),
686
errors=
687
'replace')))
688
for attr in
689
self.runtime_expansions)
690
691
try:
692
command = self.checker_command % escaped_attrs
693
except TypeError as error:
694
logger.error('Could not format string "%s":'
695
' %s', self.checker_command, error)
696
return True # Try again later
1175
697
self.current_checker_command = command
1176
logger.info("Starting checker %r for %s", command,
1177
self.name)
1178
# We don't need to redirect stdout and stderr, since
1179
# in normal mode, that is already done by daemon(),
1180
# and in debug mode we don't want to. (Stdin is
1181
# always replaced by /dev/null.)
1182
# The exception is when not debugging but nevertheless
1183
# running in the foreground; use the previously
1184
# created wnull.
1185
popen_args = {"close_fds": True,
1186
"shell": True,
1187
"cwd": "/"}
1188
if (not self.server_settings["debug"]
1189
and self.server_settings["foreground"]):
1190
popen_args.update({"stdout": wnull,
1191
"stderr": wnull})
1192
pipe = multiprocessing.Pipe(duplex=False)
1193
self.checker = multiprocessing.Process(
1194
target=call_pipe,
1195
args=(pipe[1], subprocess.call, command),
1196
kwargs=popen_args)
1197
self.checker.start()
1198
self.checker_callback_tag = GLib.io_add_watch(
1199
GLib.IOChannel.unix_new(pipe[0].fileno()),
1200
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1201
self.checker_callback, pipe[0], command)
1202
# Re-run this periodically if run by GLib.timeout_add
698
try:
699
logger.info("Starting checker %r for %s",
700
command, self.name)
701
# We don't need to redirect stdout and stderr, since
702
# in normal mode, that is already done by daemon(),
703
# and in debug mode we don't want to. (Stdin is
704
# always replaced by /dev/null.)
705
self.checker = subprocess.Popen(command,
706
close_fds=True,
707
shell=True, cwd="/")
708
self.checker_callback_tag = (gobject.child_watch_add
709
(self.checker.pid,
710
self.checker_callback,
711
data=command))
712
# The checker may have completed before the gobject
713
# watch was added. Check for this.
714
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
715
if pid:
716
gobject.source_remove(self.checker_callback_tag)
717
self.checker_callback(pid, status, command)
718
except OSError as error:
719
logger.error("Failed to start subprocess: %s",
720
error)
721
# Re-run this periodically if run by gobject.timeout_add
1203
722
return True
1204
723
1205
724
def stop_checker(self):
1206
725
"""Force the checker process, if any, to stop."""
1207
726
if self.checker_callback_tag:
1208
GLib.source_remove(self.checker_callback_tag)
727
gobject.source_remove(self.checker_callback_tag)
1209
728
self.checker_callback_tag = None
1210
729
if getattr(self, "checker", None) is None:
1211
730
return
1212
731
logger.debug("Stopping checker for %(name)s", vars(self))
1213
self.checker.terminate()
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
1214
740
self.checker = None
1215
741
1216
742
1217
def dbus_service_property(dbus_interface,
1218
signature="v",
1219
access="readwrite",
1220
byte_arrays=False):
743
def dbus_service_property(dbus_interface, signature="v",
744
access="readwrite", byte_arrays=False):
1221
745
"""Decorators for marking methods of a DBusObjectWithProperties to
1222
746
become properties on the D-Bus.
1223
747
1224
748
The decorated method will be called with no arguments by "Get"
1225
749
and with one argument by "Set".
1226
750
1227
751
The parameters, where they are supported, are the same as
1228
752
dbus.service.method, except there is only "signature", since the
1229
753
type from Get() and the type sent to Set() is the same.
1232
756
# "Set" method, so we fail early here:
1233
757
if byte_arrays and signature != "ay":
1234
758
raise ValueError("Byte arrays not supported for non-'ay'"
1235
" signature {!r}".format(signature))
1236
759
" signature %r" % signature)
1237
760
def decorator(func):
1238
761
func._dbus_is_property = True
1239
762
func._dbus_interface = dbus_interface
1242
765
func._dbus_name = func.__name__
1243
766
if func._dbus_name.endswith("_dbus_property"):
1244
767
func._dbus_name = func._dbus_name[:-14]
1245
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1246
return func
1247
1248
return decorator
1249
1250
1251
def dbus_interface_annotations(dbus_interface):
1252
"""Decorator for marking functions returning interface annotations
1253
1254
Usage:
1255
1256
@dbus_interface_annotations("org.example.Interface")
1257
def _foo(self): # Function name does not matter
1258
return {"org.freedesktop.DBus.Deprecated": "true",
1259
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1260
"false"}
1261
"""
1262
1263
def decorator(func):
1264
func._dbus_is_interface = True
1265
func._dbus_interface = dbus_interface
1266
func._dbus_name = dbus_interface
1267
return func
1268
1269
return decorator
1270
1271
1272
def dbus_annotations(annotations):
1273
"""Decorator to annotate D-Bus methods, signals or properties
1274
Usage:
1275
1276
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1277
"org.freedesktop.DBus.Property."
1278
"EmitsChangedSignal": "false"})
1279
@dbus_service_property("org.example.Interface", signature="b",
1280
access="r")
1281
def Property_dbus_property(self):
1282
return dbus.Boolean(False)
1283
1284
See also the DBusObjectWithAnnotations class.
1285
"""
1286
1287
def decorator(func):
1288
func._dbus_annotations = annotations
1289
return func
1290
768
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
769
return func
1291
770
return decorator
1292
771
1293
772
1294
773
class DBusPropertyException(dbus.exceptions.DBusException):
1295
774
"""A base class for D-Bus property-related exceptions
1296
775
"""
1297
pass
776
def __unicode__(self):
777
return unicode(str(self))
1298
778
1299
779
1300
780
class DBusPropertyAccessException(DBusPropertyException):
1309
789
pass
1310
790
1311
791
1312
class DBusObjectWithAnnotations(dbus.service.Object):
1313
"""A D-Bus object with annotations.
1314
1315
Classes inheriting from this can use the dbus_annotations
1316
decorator to add annotations to methods or signals.
1317
"""
1318
1319
@staticmethod
1320
def _is_dbus_thing(thing):
1321
"""Returns a function testing if an attribute is a D-Bus thing
1322
1323
If called like _is_dbus_thing("method") it returns a function
1324
suitable for use as predicate to inspect.getmembers().
1325
"""
1326
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1327
False)
1328
1329
def _get_all_dbus_things(self, thing):
1330
"""Returns a generator of (name, attribute) pairs
1331
"""
1332
return ((getattr(athing.__get__(self), "_dbus_name", name),
1333
athing.__get__(self))
1334
for cls in self.__class__.__mro__
1335
for name, athing in
1336
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1337
1338
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1339
out_signature="s",
1340
path_keyword='object_path',
1341
connection_keyword='connection')
1342
def Introspect(self, object_path, connection):
1343
"""Overloading of standard D-Bus method.
1344
1345
Inserts annotation tags on methods and signals.
1346
"""
1347
xmlstring = dbus.service.Object.Introspect(self, object_path,
1348
connection)
1349
try:
1350
document = xml.dom.minidom.parseString(xmlstring)
1351
1352
for if_tag in document.getElementsByTagName("interface"):
1353
# Add annotation tags
1354
for typ in ("method", "signal"):
1355
for tag in if_tag.getElementsByTagName(typ):
1356
annots = dict()
1357
for name, prop in (self.
1358
_get_all_dbus_things(typ)):
1359
if (name == tag.getAttribute("name")
1360
and prop._dbus_interface
1361
== if_tag.getAttribute("name")):
1362
annots.update(getattr(
1363
prop, "_dbus_annotations", {}))
1364
for name, value in annots.items():
1365
ann_tag = document.createElement(
1366
"annotation")
1367
ann_tag.setAttribute("name", name)
1368
ann_tag.setAttribute("value", value)
1369
tag.appendChild(ann_tag)
1370
# Add interface annotation tags
1371
for annotation, value in dict(
1372
itertools.chain.from_iterable(
1373
annotations().items()
1374
for name, annotations
1375
in self._get_all_dbus_things("interface")
1376
if name == if_tag.getAttribute("name")
1377
)).items():
1378
ann_tag = document.createElement("annotation")
1379
ann_tag.setAttribute("name", annotation)
1380
ann_tag.setAttribute("value", value)
1381
if_tag.appendChild(ann_tag)
1382
# Fix argument name for the Introspect method itself
1383
if (if_tag.getAttribute("name")
1384
== dbus.INTROSPECTABLE_IFACE):
1385
for cn in if_tag.getElementsByTagName("method"):
1386
if cn.getAttribute("name") == "Introspect":
1387
for arg in cn.getElementsByTagName("arg"):
1388
if (arg.getAttribute("direction")
1389
== "out"):
1390
arg.setAttribute("name",
1391
"xml_data")
1392
xmlstring = document.toxml("utf-8")
1393
document.unlink()
1394
except (AttributeError, xml.dom.DOMException,
1395
xml.parsers.expat.ExpatError) as error:
1396
logger.error("Failed to override Introspection method",
1397
exc_info=error)
1398
return xmlstring
1399
1400
1401
class DBusObjectWithProperties(DBusObjectWithAnnotations):
792
class DBusObjectWithProperties(dbus.service.Object):
1402
793
"""A D-Bus object with properties.
1403
794
1404
795
Classes inheriting from this can use the dbus_service_property
1405
796
decorator to expose methods as D-Bus properties. It exposes the
1406
797
standard Get(), Set(), and GetAll() methods on the D-Bus.
1407
798
"""
1408
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
1409
812
def _get_dbus_property(self, interface_name, property_name):
1410
813
"""Returns a bound method if one exists which is a D-Bus
1411
814
property with the specified name and interface.
1412
815
"""
1413
for cls in self.__class__.__mro__:
1414
for name, value in inspect.getmembers(
1415
cls, self._is_dbus_thing("property")):
816
for cls in self.__class__.__mro__:
817
for name, value in (inspect.getmembers
818
(cls, self._is_dbus_property)):
1416
819
if (value._dbus_name == property_name
1417
820
and value._dbus_interface == interface_name):
1418
821
return value.__get__(self)
1419
822
1420
823
# No such property
1421
raise DBusPropertyNotFound("{}:{}.{}".format(
1422
self.dbus_object_path, interface_name, property_name))
1423
1424
@classmethod
1425
def _get_all_interface_names(cls):
1426
"""Get a sequence of all interfaces supported by an object"""
1427
return (name for name in set(getattr(getattr(x, attr),
1428
"_dbus_interface", None)
1429
for x in (inspect.getmro(cls))
1430
for attr in dir(x))
1431
if name is not None)
1432
1433
@dbus.service.method(dbus.PROPERTIES_IFACE,
1434
in_signature="ss",
824
raise DBusPropertyNotFound(self.dbus_object_path + ":"
825
+ interface_name + "."
826
+ property_name)
827
828
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1435
829
out_signature="v")
1436
830
def Get(self, interface_name, property_name):
1437
831
"""Standard D-Bus property Get() method, see D-Bus standard.
1443
837
if not hasattr(value, "variant_level"):
1444
838
return value
1445
839
return type(value)(value, variant_level=value.variant_level+1)
1446
840
1447
841
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1448
842
def Set(self, interface_name, property_name, value):
1449
843
"""Standard D-Bus property Set() method, see D-Bus standard.
1455
849
# The byte_arrays option is not supported yet on
1456
850
# signatures other than "ay".
1457
851
if prop._dbus_signature != "ay":
1458
raise ValueError("Byte arrays not supported for non-"
1459
"'ay' signature {!r}"
1460
.format(prop._dbus_signature))
1461
value = dbus.ByteArray(bytes(value))
852
raise ValueError
853
value = dbus.ByteArray(''.join(unichr(byte)
854
for byte in value))
1462
855
prop(value)
1463
1464
@dbus.service.method(dbus.PROPERTIES_IFACE,
1465
in_signature="s",
856
857
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1466
858
out_signature="a{sv}")
1467
859
def GetAll(self, interface_name):
1468
860
"""Standard D-Bus property GetAll() method, see D-Bus
1469
861
standard.
1470
862
1471
863
Note: Will not include properties with access="write".
1472
864
"""
1473
865
properties = {}
1474
for name, prop in self._get_all_dbus_things("property"):
866
for name, prop in self._get_all_dbus_properties():
1475
867
if (interface_name
1476
868
and interface_name != prop._dbus_interface):
1477
869
# Interface non-empty but did not match
1483
875
if not hasattr(value, "variant_level"):
1484
876
properties[name] = value
1485
877
continue
1486
properties[name] = type(value)(
1487
value, variant_level=value.variant_level + 1)
878
properties[name] = type(value)(value, variant_level=
879
value.variant_level+1)
1488
880
return dbus.Dictionary(properties, signature="sv")
1489
1490
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1491
def PropertiesChanged(self, interface_name, changed_properties,
1492
invalidated_properties):
1493
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1494
standard.
1495
"""
1496
pass
1497
881
1498
882
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1499
883
out_signature="s",
1500
884
path_keyword='object_path',
1501
885
connection_keyword='connection')
1502
886
def Introspect(self, object_path, connection):
1503
"""Overloading of standard D-Bus method.
1504
1505
Inserts property tags and interface annotation tags.
887
"""Standard D-Bus method, overloaded to insert property tags.
1506
888
"""
1507
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1508
object_path,
1509
connection)
889
xmlstring = dbus.service.Object.Introspect(self, object_path,
890
connection)
1510
891
try:
1511
892
document = xml.dom.minidom.parseString(xmlstring)
1512
1513
893
def make_tag(document, name, prop):
1514
894
e = document.createElement("property")
1515
895
e.setAttribute("name", name)
1516
896
e.setAttribute("type", prop._dbus_signature)
1517
897
e.setAttribute("access", prop._dbus_access)
1518
898
return e
1519
1520
899
for if_tag in document.getElementsByTagName("interface"):
1521
# Add property tags
1522
900
for tag in (make_tag(document, name, prop)
1523
901
for name, prop
1524
in self._get_all_dbus_things("property")
902
in self._get_all_dbus_properties()
1525
903
if prop._dbus_interface
1526
904
== if_tag.getAttribute("name")):
1527
905
if_tag.appendChild(tag)
1528
# Add annotation tags for properties
1529
for tag in if_tag.getElementsByTagName("property"):
1530
annots = dict()
1531
for name, prop in self._get_all_dbus_things(
1532
"property"):
1533
if (name == tag.getAttribute("name")
1534
and prop._dbus_interface
1535
== if_tag.getAttribute("name")):
1536
annots.update(getattr(
1537
prop, "_dbus_annotations", {}))
1538
for name, value in annots.items():
1539
ann_tag = document.createElement(
1540
"annotation")
1541
ann_tag.setAttribute("name", name)
1542
ann_tag.setAttribute("value", value)
1543
tag.appendChild(ann_tag)
1544
906
# Add the names to the return values for the
1545
907
# "org.freedesktop.DBus.Properties" methods
1546
908
if (if_tag.getAttribute("name")
1561
923
except (AttributeError, xml.dom.DOMException,
1562
924
xml.parsers.expat.ExpatError) as error:
1563
925
logger.error("Failed to override Introspection method",
1564
exc_info=error)
1565
return xmlstring
1566
1567
1568
try:
1569
dbus.OBJECT_MANAGER_IFACE
1570
except AttributeError:
1571
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1572
1573
1574
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1575
"""A D-Bus object with an ObjectManager.
1576
1577
Classes inheriting from this exposes the standard
1578
GetManagedObjects call and the InterfacesAdded and
1579
InterfacesRemoved signals on the standard
1580
"org.freedesktop.DBus.ObjectManager" interface.
1581
1582
Note: No signals are sent automatically; they must be sent
1583
manually.
1584
"""
1585
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1586
out_signature="a{oa{sa{sv}}}")
1587
def GetManagedObjects(self):
1588
"""This function must be overridden"""
1589
raise NotImplementedError()
1590
1591
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1592
signature="oa{sa{sv}}")
1593
def InterfacesAdded(self, object_path, interfaces_and_properties):
1594
pass
1595
1596
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1597
def InterfacesRemoved(self, object_path, interfaces):
1598
pass
1599
1600
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1601
out_signature="s",
1602
path_keyword='object_path',
1603
connection_keyword='connection')
1604
def Introspect(self, object_path, connection):
1605
"""Overloading of standard D-Bus method.
1606
1607
Override return argument name of GetManagedObjects to be
1608
"objpath_interfaces_and_properties"
1609
"""
1610
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1611
object_path,
1612
connection)
1613
try:
1614
document = xml.dom.minidom.parseString(xmlstring)
1615
1616
for if_tag in document.getElementsByTagName("interface"):
1617
# Fix argument name for the GetManagedObjects method
1618
if (if_tag.getAttribute("name")
1619
== dbus.OBJECT_MANAGER_IFACE):
1620
for cn in if_tag.getElementsByTagName("method"):
1621
if (cn.getAttribute("name")
1622
== "GetManagedObjects"):
1623
for arg in cn.getElementsByTagName("arg"):
1624
if (arg.getAttribute("direction")
1625
== "out"):
1626
arg.setAttribute(
1627
"name",
1628
"objpath_interfaces"
1629
"_and_properties")
1630
xmlstring = document.toxml("utf-8")
1631
document.unlink()
1632
except (AttributeError, xml.dom.DOMException,
1633
xml.parsers.expat.ExpatError) as error:
1634
logger.error("Failed to override Introspection method",
1635
exc_info=error)
1636
return xmlstring
1637
1638
1639
def datetime_to_dbus(dt, variant_level=0):
926
error)
927
return xmlstring
928
929
930
def datetime_to_dbus (dt, variant_level=0):
1640
931
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1641
932
if dt is None:
1642
return dbus.String("", variant_level=variant_level)
1643
return dbus.String(dt.isoformat(), variant_level=variant_level)
1644
1645
1646
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1647
"""A class decorator; applied to a subclass of
1648
dbus.service.Object, it will add alternate D-Bus attributes with
1649
interface names according to the "alt_interface_names" mapping.
1650
Usage:
1651
1652
@alternate_dbus_interfaces({"org.example.Interface":
1653
"net.example.AlternateInterface"})
1654
class SampleDBusObject(dbus.service.Object):
1655
@dbus.service.method("org.example.Interface")
1656
def SampleDBusMethod():
1657
pass
1658
1659
The above "SampleDBusMethod" on "SampleDBusObject" will be
1660
reachable via two interfaces: "org.example.Interface" and
1661
"net.example.AlternateInterface", the latter of which will have
1662
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1663
"true", unless "deprecate" is passed with a False value.
1664
1665
This works for methods and signals, and also for D-Bus properties
1666
(from DBusObjectWithProperties) and interfaces (from the
1667
dbus_interface_annotations decorator).
933
return dbus.String("", variant_level = variant_level)
934
return dbus.String(dt.isoformat(),
935
variant_level=variant_level)
936
937
938
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
939
.__metaclass__):
940
"""Applied to an empty subclass of a D-Bus object, this metaclass
941
will add additional D-Bus attributes matching a certain pattern.
1668
942
"""
1669
1670
def wrapper(cls):
1671
for orig_interface_name, alt_interface_name in (
1672
alt_interface_names.items()):
1673
attr = {}
1674
interface_names = set()
1675
# Go though all attributes of the class
1676
for attrname, attribute in inspect.getmembers(cls):
943
def __new__(mcs, name, bases, attr):
944
# Go through all the base classes which could have D-Bus
945
# methods, signals, or properties in them
946
for base in (b for b in bases
947
if issubclass(b, dbus.service.Object)):
948
# Go though all attributes of the base class
949
for attrname, attribute in inspect.getmembers(base):
1677
950
# Ignore non-D-Bus attributes, and D-Bus attributes
1678
951
# with the wrong interface name
1679
952
if (not hasattr(attribute, "_dbus_interface")
1680
or not attribute._dbus_interface.startswith(
1681
orig_interface_name)):
953
or not attribute._dbus_interface
954
.startswith("se.recompile.Mandos")):
1682
955
continue
1683
956
# Create an alternate D-Bus interface name based on
1684
957
# the current name
1685
alt_interface = attribute._dbus_interface.replace(
1686
orig_interface_name, alt_interface_name)
1687
interface_names.add(alt_interface)
958
alt_interface = (attribute._dbus_interface
959
.replace("se.recompile.Mandos",
960
"se.bsnet.fukt.Mandos"))
1688
961
# Is this a D-Bus signal?
1689
962
if getattr(attribute, "_dbus_is_signal", False):
1690
# Extract the original non-method undecorated
1691
# function by black magic
1692
if sys.version_info.major == 2:
1693
nonmethod_func = (dict(
963
# Extract the original non-method function by
964
# black magic
965
nonmethod_func = (dict(
1694
966
zip(attribute.func_code.co_freevars,
1695
attribute.__closure__))
1696
["func"].cell_contents)
1697
else:
1698
nonmethod_func = (dict(
1699
zip(attribute.__code__.co_freevars,
1700
attribute.__closure__))
1701
["func"].cell_contents)
967
attribute.__closure__))["func"]
968
.cell_contents)
1702
969
# Create a new, but exactly alike, function
1703
970
# object, and decorate it to be a new D-Bus signal
1704
971
# with the alternate D-Bus interface name
1705
new_function = copy_function(nonmethod_func)
1706
new_function = (dbus.service.signal(
1707
alt_interface,
1708
attribute._dbus_signature)(new_function))
1709
# Copy annotations, if any
1710
try:
1711
new_function._dbus_annotations = dict(
1712
attribute._dbus_annotations)
1713
except AttributeError:
1714
pass
1715
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)))
1716
981
# Define a creator of a function to call both the
1717
# original and alternate functions, so both the
1718
# original and alternate signals gets sent when
1719
# the function is called
982
# old and new functions, so both the old and new
983
# signals gets sent when the function is called
1720
984
def fixscope(func1, func2):
1721
985
"""This function is a scope container to pass
1722
986
func1 and func2 to the "call_both" function
1723
987
outside of its arguments"""
1724
1725
@functools.wraps(func2)
1726
988
def call_both(*args, **kwargs):
1727
989
"""This function will emit two D-Bus
1728
990
signals by calling func1 and func2"""
1729
991
func1(*args, **kwargs)
1730
992
func2(*args, **kwargs)
1731
# Make wrapper function look like a D-Bus
1732
# signal
1733
for name, attr in inspect.getmembers(func2):
1734
if name.startswith("_dbus_"):
1735
setattr(call_both, name, attr)
1736
1737
993
return call_both
1738
994
# Create the "call_both" function and add it to
1739
995
# the class
1740
attr[attrname] = fixscope(attribute, new_function)
996
attr[attrname] = fixscope(attribute,
997
new_function)
1741
998
# Is this a D-Bus method?
1742
999
elif getattr(attribute, "_dbus_is_method", False):
1743
1000
# Create a new, but exactly alike, function
1744
1001
# object. Decorate it to be a new D-Bus method
1745
1002
# with the alternate D-Bus interface name. Add it
1746
1003
# to the class.
1747
attr[attrname] = (
1748
dbus.service.method(
1749
alt_interface,
1750
attribute._dbus_in_signature,
1751
attribute._dbus_out_signature)
1752
(copy_function(attribute)))
1753
# Copy annotations, if any
1754
try:
1755
attr[attrname]._dbus_annotations = dict(
1756
attribute._dbus_annotations)
1757
except AttributeError:
1758
pass
1004
attr[attrname] = (dbus.service.method
1005
(alt_interface,
1006
attribute._dbus_in_signature,
1007
attribute._dbus_out_signature)
1008
(types.FunctionType
1009
(attribute.func_code,
1010
attribute.func_globals,
1011
attribute.func_name,
1012
attribute.func_defaults,
1013
attribute.func_closure)))
1759
1014
# Is this a D-Bus property?
1760
1015
elif getattr(attribute, "_dbus_is_property", False):
1761
1016
# Create a new, but exactly alike, function
1762
1017
# object, and decorate it to be a new D-Bus
1763
1018
# property with the alternate D-Bus interface
1764
1019
# name. Add it to the class.
1765
attr[attrname] = (dbus_service_property(
1766
alt_interface, attribute._dbus_signature,
1767
attribute._dbus_access,
1768
attribute._dbus_get_args_options
1769
["byte_arrays"])
1770
(copy_function(attribute)))
1771
# Copy annotations, if any
1772
try:
1773
attr[attrname]._dbus_annotations = dict(
1774
attribute._dbus_annotations)
1775
except AttributeError:
1776
pass
1777
# Is this a D-Bus interface?
1778
elif getattr(attribute, "_dbus_is_interface", False):
1779
# Create a new, but exactly alike, function
1780
# object. Decorate it to be a new D-Bus interface
1781
# with the alternate D-Bus interface name. Add it
1782
# to the class.
1783
attr[attrname] = (
1784
dbus_interface_annotations(alt_interface)
1785
(copy_function(attribute)))
1786
if deprecate:
1787
# Deprecate all alternate interfaces
1788
iname = "_AlternateDBusNames_interface_annotation{}"
1789
for interface_name in interface_names:
1790
1791
@dbus_interface_annotations(interface_name)
1792
def func(self):
1793
return {"org.freedesktop.DBus.Deprecated":
1794
"true"}
1795
# Find an unused name
1796
for aname in (iname.format(i)
1797
for i in itertools.count()):
1798
if aname not in attr:
1799
attr[aname] = func
1800
break
1801
if interface_names:
1802
# Replace the class with a new subclass of it with
1803
# methods, signals, etc. as created above.
1804
if sys.version_info.major == 2:
1805
cls = type(b"{}Alternate".format(cls.__name__),
1806
(cls, ), attr)
1807
else:
1808
cls = type("{}Alternate".format(cls.__name__),
1809
(cls, ), attr)
1810
return cls
1811
1812
return wrapper
1813
1814
1815
@alternate_dbus_interfaces({"se.recompile.Mandos":
1816
"se.bsnet.fukt.Mandos"})
1020
attr[attrname] = (dbus_service_property
1021
(alt_interface,
1022
attribute._dbus_signature,
1023
attribute._dbus_access,
1024
attribute
1025
._dbus_get_args_options
1026
["byte_arrays"])
1027
(types.FunctionType
1028
(attribute.func_code,
1029
attribute.func_globals,
1030
attribute.func_name,
1031
attribute.func_defaults,
1032
attribute.func_closure)))
1033
return type.__new__(mcs, name, bases, attr)
1034
1035
1817
1036
class ClientDBus(Client, DBusObjectWithProperties):
1818
1037
"""A Client class using D-Bus
1819
1038
1820
1039
Attributes:
1821
1040
dbus_object_path: dbus.ObjectPath
1822
1041
bus: dbus.SystemBus()
1823
1042
"""
1824
1043
1825
1044
runtime_expansions = (Client.runtime_expansions
1826
+ ("dbus_object_path", ))
1827
1828
_interface = "se.recompile.Mandos.Client"
1829
1045
+ ("dbus_object_path",))
1046
1830
1047
# dbus.service.Object doesn't use super(), so we can't either.
1831
1832
def __init__(self, bus=None, *args, **kwargs):
1048
1049
def __init__(self, bus = None, *args, **kwargs):
1833
1050
self.bus = bus
1834
1051
Client.__init__(self, *args, **kwargs)
1052
self._approvals_pending = 0
1053
1054
self._approvals_pending = 0
1835
1055
# Only now, when this client is initialized, can it show up on
1836
1056
# the D-Bus
1837
client_object_name = str(self.name).translate(
1057
client_object_name = unicode(self.name).translate(
1838
1058
{ord("."): ord("_"),
1839
1059
ord("-"): ord("_")})
1840
self.dbus_object_path = dbus.ObjectPath(
1841
"/clients/" + client_object_name)
1060
self.dbus_object_path = (dbus.ObjectPath
1061
("/clients/" + client_object_name))
1842
1062
DBusObjectWithProperties.__init__(self, self.bus,
1843
1063
self.dbus_object_path)
1844
1845
def notifychangeproperty(transform_func, dbus_name,
1846
type_func=lambda x: x,
1847
variant_level=1,
1848
invalidate_only=False,
1849
_interface=_interface):
1064
1065
def notifychangeproperty(transform_func,
1066
dbus_name, type_func=lambda x: x,
1067
variant_level=1):
1850
1068
""" Modify a variable so that it's a property which announces
1851
1069
its changes to DBus.
1852
1070
1853
1071
transform_fun: Function that takes a value and a variant_level
1854
1072
and transforms it to a D-Bus type.
1855
1073
dbus_name: D-Bus name of the variable
1857
1075
to the D-Bus. Default: no transform
1858
1076
variant_level: D-Bus variant level. Default: 1
1859
1077
"""
1860
attrname = "_{}".format(dbus_name)
1861
1078
attrname = "_{0}".format(dbus_name)
1862
1079
def setter(self, value):
1863
1080
if hasattr(self, "dbus_object_path"):
1864
1081
if (not hasattr(self, attrname) or
1865
1082
type_func(getattr(self, attrname, None))
1866
1083
!= type_func(value)):
1867
if invalidate_only:
1868
self.PropertiesChanged(
1869
_interface, dbus.Dictionary(),
1870
dbus.Array((dbus_name, )))
1871
else:
1872
dbus_value = transform_func(
1873
type_func(value),
1874
variant_level=variant_level)
1875
self.PropertyChanged(dbus.String(dbus_name),
1876
dbus_value)
1877
self.PropertiesChanged(
1878
_interface,
1879
dbus.Dictionary({dbus.String(dbus_name):
1880
dbus_value}),
1881
dbus.Array())
1084
dbus_value = transform_func(type_func(value),
1085
variant_level
1086
=variant_level)
1087
self.PropertyChanged(dbus.String(dbus_name),
1088
dbus_value)
1882
1089
setattr(self, attrname, value)
1883
1090
1884
1091
return property(lambda self: getattr(self, attrname), setter)
1885
1092
1093
1886
1094
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1887
1095
approvals_pending = notifychangeproperty(dbus.Boolean,
1888
1096
"ApprovalPending",
1889
type_func=bool)
1097
type_func = bool)
1890
1098
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1891
1099
last_enabled = notifychangeproperty(datetime_to_dbus,
1892
1100
"LastEnabled")
1893
checker = notifychangeproperty(
1894
dbus.Boolean, "CheckerRunning",
1895
type_func=lambda checker: checker is not None)
1101
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1102
type_func = lambda checker:
1103
checker is not None)
1896
1104
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1897
1105
"LastCheckedOK")
1898
last_checker_status = notifychangeproperty(dbus.Int16,
1899
"LastCheckerStatus")
1900
1106
last_approval_request = notifychangeproperty(
1901
1107
datetime_to_dbus, "LastApprovalRequest")
1902
1108
approved_by_default = notifychangeproperty(dbus.Boolean,
1903
1109
"ApprovedByDefault")
1904
approval_delay = notifychangeproperty(
1905
dbus.UInt64, "ApprovalDelay",
1906
type_func=lambda td: td.total_seconds() * 1000)
1110
approval_delay = notifychangeproperty(dbus.UInt64,
1111
"ApprovalDelay",
1112
type_func =
1113
timedelta_to_milliseconds)
1907
1114
approval_duration = notifychangeproperty(
1908
1115
dbus.UInt64, "ApprovalDuration",
1909
type_func=lambda td: td.total_seconds() * 1000)
1116
type_func = timedelta_to_milliseconds)
1910
1117
host = notifychangeproperty(dbus.String, "Host")
1911
timeout = notifychangeproperty(
1912
dbus.UInt64, "Timeout",
1913
type_func=lambda td: td.total_seconds() * 1000)
1118
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1119
type_func =
1120
timedelta_to_milliseconds)
1914
1121
extended_timeout = notifychangeproperty(
1915
1122
dbus.UInt64, "ExtendedTimeout",
1916
type_func=lambda td: td.total_seconds() * 1000)
1917
interval = notifychangeproperty(
1918
dbus.UInt64, "Interval",
1919
type_func=lambda td: td.total_seconds() * 1000)
1123
type_func = timedelta_to_milliseconds)
1124
interval = notifychangeproperty(dbus.UInt64,
1125
"Interval",
1126
type_func =
1127
timedelta_to_milliseconds)
1920
1128
checker_command = notifychangeproperty(dbus.String, "Checker")
1921
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1922
invalidate_only=True)
1923
1129
1924
1130
del notifychangeproperty
1925
1131
1926
1132
def __del__(self, *args, **kwargs):
1927
1133
try:
1928
1134
self.remove_from_connection()
1931
1137
if hasattr(DBusObjectWithProperties, "__del__"):
1932
1138
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1933
1139
Client.__del__(self, *args, **kwargs)
1934
1935
def checker_callback(self, source, condition,
1936
connection, command, *args, **kwargs):
1937
ret = Client.checker_callback(self, source, condition,
1938
connection, command, *args,
1939
**kwargs)
1940
exitstatus = self.last_checker_status
1941
if exitstatus >= 0:
1140
1141
def checker_callback(self, pid, condition, command,
1142
*args, **kwargs):
1143
self.checker_callback_tag = None
1144
self.checker = None
1145
if os.WIFEXITED(condition):
1146
exitstatus = os.WEXITSTATUS(condition)
1942
1147
# Emit D-Bus signal
1943
1148
self.CheckerCompleted(dbus.Int16(exitstatus),
1944
# This is specific to GNU libC
1945
dbus.Int64(exitstatus << 8),
1149
dbus.Int64(condition),
1946
1150
dbus.String(command))
1947
1151
else:
1948
1152
# Emit D-Bus signal
1949
1153
self.CheckerCompleted(dbus.Int16(-1),
1950
dbus.Int64(
1951
# This is specific to GNU libC
1952
(exitstatus << 8)
1953
| self.last_checker_signal),
1154
dbus.Int64(condition),
1954
1155
dbus.String(command))
1955
return ret
1956
1156
1157
return Client.checker_callback(self, pid, condition, command,
1158
*args, **kwargs)
1159
1957
1160
def start_checker(self, *args, **kwargs):
1958
old_checker_pid = getattr(self.checker, "pid", None)
1161
old_checker = self.checker
1162
if self.checker is not None:
1163
old_checker_pid = self.checker.pid
1164
else:
1165
old_checker_pid = None
1959
1166
r = Client.start_checker(self, *args, **kwargs)
1960
1167
# Only if new checker process was started
1961
1168
if (self.checker is not None
1963
1170
# Emit D-Bus signal
1964
1171
self.CheckerStarted(self.current_checker_command)
1965
1172
return r
1966
1173
1967
1174
def _reset_approved(self):
1968
1175
self.approved = None
1969
1176
return False
1970
1177
1971
1178
def approve(self, value=True):
1179
self.send_changedstate()
1972
1180
self.approved = value
1973
GLib.timeout_add(int(self.approval_duration.total_seconds()
1974
* 1000), self._reset_approved)
1975
self.send_changedstate()
1976
1977
# D-Bus methods, signals & properties
1978
1979
# Interfaces
1980
1981
# Signals
1982
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
1983
1191
# CheckerCompleted - signal
1984
1192
@dbus.service.signal(_interface, signature="nxs")
1985
1193
def CheckerCompleted(self, exitcode, waitstatus, command):
1986
1194
"D-Bus signal"
1987
1195
pass
1988
1196
1989
1197
# CheckerStarted - signal
1990
1198
@dbus.service.signal(_interface, signature="s")
1991
1199
def CheckerStarted(self, command):
1992
1200
"D-Bus signal"
1993
1201
pass
1994
1202
1995
1203
# PropertyChanged - signal
1996
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1997
1204
@dbus.service.signal(_interface, signature="sv")
1998
1205
def PropertyChanged(self, property, value):
1999
1206
"D-Bus signal"
2000
1207
pass
2001
1208
2002
1209
# GotSecret - signal
2003
1210
@dbus.service.signal(_interface)
2004
1211
def GotSecret(self):
2007
1214
server to mandos-client
2008
1215
"""
2009
1216
pass
2010
1217
2011
1218
# Rejected - signal
2012
1219
@dbus.service.signal(_interface, signature="s")
2013
1220
def Rejected(self, reason):
2014
1221
"D-Bus signal"
2015
1222
pass
2016
1223
2017
1224
# NeedApproval - signal
2018
1225
@dbus.service.signal(_interface, signature="tb")
2019
1226
def NeedApproval(self, timeout, default):
2020
1227
"D-Bus signal"
2021
1228
return self.need_approval()
2022
2023
# Methods
2024
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
2025
1240
# Approve - method
2026
1241
@dbus.service.method(_interface, in_signature="b")
2027
1242
def Approve(self, value):
2028
1243
self.approve(value)
2029
1244
2030
1245
# CheckedOK - method
2031
1246
@dbus.service.method(_interface)
2032
1247
def CheckedOK(self):
2033
1248
self.checked_ok()
2034
1249
2035
1250
# Enable - method
2036
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2037
1251
@dbus.service.method(_interface)
2038
1252
def Enable(self):
2039
1253
"D-Bus method"
2040
1254
self.enable()
2041
1255
2042
1256
# StartChecker - method
2043
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2044
1257
@dbus.service.method(_interface)
2045
1258
def StartChecker(self):
2046
1259
"D-Bus method"
2047
1260
self.start_checker()
2048
1261
2049
1262
# Disable - method
2050
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2051
1263
@dbus.service.method(_interface)
2052
1264
def Disable(self):
2053
1265
"D-Bus method"
2054
1266
self.disable()
2055
1267
2056
1268
# StopChecker - method
2057
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2058
1269
@dbus.service.method(_interface)
2059
1270
def StopChecker(self):
2060
1271
self.stop_checker()
2061
2062
# Properties
2063
1272
1273
## Properties
1274
2064
1275
# ApprovalPending - property
2065
1276
@dbus_service_property(_interface, signature="b", access="read")
2066
1277
def ApprovalPending_dbus_property(self):
2067
1278
return dbus.Boolean(bool(self.approvals_pending))
2068
1279
2069
1280
# ApprovedByDefault - property
2070
@dbus_service_property(_interface,
2071
signature="b",
1281
@dbus_service_property(_interface, signature="b",
2072
1282
access="readwrite")
2073
1283
def ApprovedByDefault_dbus_property(self, value=None):
2074
1284
if value is None: # get
2075
1285
return dbus.Boolean(self.approved_by_default)
2076
1286
self.approved_by_default = bool(value)
2077
1287
2078
1288
# ApprovalDelay - property
2079
@dbus_service_property(_interface,
2080
signature="t",
1289
@dbus_service_property(_interface, signature="t",
2081
1290
access="readwrite")
2082
1291
def ApprovalDelay_dbus_property(self, value=None):
2083
1292
if value is None: # get
2084
return dbus.UInt64(self.approval_delay.total_seconds()
2085
* 1000)
1293
return dbus.UInt64(self.approval_delay_milliseconds())
2086
1294
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2087
1295
2088
1296
# ApprovalDuration - property
2089
@dbus_service_property(_interface,
2090
signature="t",
1297
@dbus_service_property(_interface, signature="t",
2091
1298
access="readwrite")
2092
1299
def ApprovalDuration_dbus_property(self, value=None):
2093
1300
if value is None: # get
2094
return dbus.UInt64(self.approval_duration.total_seconds()
2095
* 1000)
1301
return dbus.UInt64(timedelta_to_milliseconds(
1302
self.approval_duration))
2096
1303
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2097
1304
2098
1305
# Name - property
2099
@dbus_annotations(
2100
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2101
1306
@dbus_service_property(_interface, signature="s", access="read")
2102
1307
def Name_dbus_property(self):
2103
1308
return dbus.String(self.name)
2104
2105
# KeyID - property
2106
@dbus_annotations(
2107
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2108
@dbus_service_property(_interface, signature="s", access="read")
2109
def KeyID_dbus_property(self):
2110
return dbus.String(self.key_id)
2111
1309
2112
1310
# Fingerprint - property
2113
@dbus_annotations(
2114
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2115
1311
@dbus_service_property(_interface, signature="s", access="read")
2116
1312
def Fingerprint_dbus_property(self):
2117
1313
return dbus.String(self.fingerprint)
2118
1314
2119
1315
# Host - property
2120
@dbus_service_property(_interface,
2121
signature="s",
1316
@dbus_service_property(_interface, signature="s",
2122
1317
access="readwrite")
2123
1318
def Host_dbus_property(self, value=None):
2124
1319
if value is None: # get
2125
1320
return dbus.String(self.host)
2126
self.host = str(value)
2127
1321
self.host = unicode(value)
1322
2128
1323
# Created - property
2129
@dbus_annotations(
2130
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2131
1324
@dbus_service_property(_interface, signature="s", access="read")
2132
1325
def Created_dbus_property(self):
2133
1326
return datetime_to_dbus(self.created)
2134
1327
2135
1328
# LastEnabled - property
2136
1329
@dbus_service_property(_interface, signature="s", access="read")
2137
1330
def LastEnabled_dbus_property(self):
2138
1331
return datetime_to_dbus(self.last_enabled)
2139
1332
2140
1333
# Enabled - property
2141
@dbus_service_property(_interface,
2142
signature="b",
1334
@dbus_service_property(_interface, signature="b",
2143
1335
access="readwrite")
2144
1336
def Enabled_dbus_property(self, value=None):
2145
1337
if value is None: # get
2148
1340
self.enable()
2149
1341
else:
2150
1342
self.disable()
2151
1343
2152
1344
# LastCheckedOK - property
2153
@dbus_service_property(_interface,
2154
signature="s",
1345
@dbus_service_property(_interface, signature="s",
2155
1346
access="readwrite")
2156
1347
def LastCheckedOK_dbus_property(self, value=None):
2157
1348
if value is not None:
2158
1349
self.checked_ok()
2159
1350
return
2160
1351
return datetime_to_dbus(self.last_checked_ok)
2161
2162
# LastCheckerStatus - property
2163
@dbus_service_property(_interface, signature="n", access="read")
2164
def LastCheckerStatus_dbus_property(self):
2165
return dbus.Int16(self.last_checker_status)
2166
1352
2167
1353
# Expires - property
2168
1354
@dbus_service_property(_interface, signature="s", access="read")
2169
1355
def Expires_dbus_property(self):
2170
1356
return datetime_to_dbus(self.expires)
2171
1357
2172
1358
# LastApprovalRequest - property
2173
1359
@dbus_service_property(_interface, signature="s", access="read")
2174
1360
def LastApprovalRequest_dbus_property(self):
2175
1361
return datetime_to_dbus(self.last_approval_request)
2176
1362
2177
1363
# Timeout - property
2178
@dbus_service_property(_interface,
2179
signature="t",
1364
@dbus_service_property(_interface, signature="t",
2180
1365
access="readwrite")
2181
1366
def Timeout_dbus_property(self, value=None):
2182
1367
if value is None: # get
2183
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2184
old_timeout = self.timeout
1368
return dbus.UInt64(self.timeout_milliseconds())
2185
1369
self.timeout = datetime.timedelta(0, 0, 0, value)
2186
# Reschedule disabling
1370
# Reschedule timeout
2187
1371
if self.enabled:
2188
1372
now = datetime.datetime.utcnow()
2189
self.expires += self.timeout - old_timeout
2190
if self.expires <= now:
1373
time_to_die = timedelta_to_milliseconds(
1374
(self.last_checked_ok + self.timeout) - now)
1375
if time_to_die <= 0:
2191
1376
# The timeout has passed
2192
1377
self.disable()
2193
1378
else:
1379
self.expires = (now +
1380
datetime.timedelta(milliseconds =
1381
time_to_die))
2194
1382
if (getattr(self, "disable_initiator_tag", None)
2195
1383
is None):
2196
1384
return
2197
GLib.source_remove(self.disable_initiator_tag)
2198
self.disable_initiator_tag = GLib.timeout_add(
2199
int((self.expires - now).total_seconds() * 1000),
2200
self.disable)
2201
1385
gobject.source_remove(self.disable_initiator_tag)
1386
self.disable_initiator_tag = (gobject.timeout_add
1387
(time_to_die,
1388
self.disable))
1389
2202
1390
# ExtendedTimeout - property
2203
@dbus_service_property(_interface,
2204
signature="t",
1391
@dbus_service_property(_interface, signature="t",
2205
1392
access="readwrite")
2206
1393
def ExtendedTimeout_dbus_property(self, value=None):
2207
1394
if value is None: # get
2208
return dbus.UInt64(self.extended_timeout.total_seconds()
2209
* 1000)
1395
return dbus.UInt64(self.extended_timeout_milliseconds())
2210
1396
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2211
1397
2212
1398
# Interval - property
2213
@dbus_service_property(_interface,
2214
signature="t",
1399
@dbus_service_property(_interface, signature="t",
2215
1400
access="readwrite")
2216
1401
def Interval_dbus_property(self, value=None):
2217
1402
if value is None: # get
2218
return dbus.UInt64(self.interval.total_seconds() * 1000)
1403
return dbus.UInt64(self.interval_milliseconds())
2219
1404
self.interval = datetime.timedelta(0, 0, 0, value)
2220
1405
if getattr(self, "checker_initiator_tag", None) is None:
2221
1406
return
2222
1407
if self.enabled:
2223
1408
# Reschedule checker run
2224
GLib.source_remove(self.checker_initiator_tag)
2225
self.checker_initiator_tag = GLib.timeout_add(
2226
value, self.start_checker)
2227
self.start_checker() # Start one now, too
2228
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
2229
1414
# Checker - property
2230
@dbus_service_property(_interface,
2231
signature="s",
1415
@dbus_service_property(_interface, signature="s",
2232
1416
access="readwrite")
2233
1417
def Checker_dbus_property(self, value=None):
2234
1418
if value is None: # get
2235
1419
return dbus.String(self.checker_command)
2236
self.checker_command = str(value)
2237
1420
self.checker_command = unicode(value)
1421
2238
1422
# CheckerRunning - property
2239
@dbus_service_property(_interface,
2240
signature="b",
1423
@dbus_service_property(_interface, signature="b",
2241
1424
access="readwrite")
2242
1425
def CheckerRunning_dbus_property(self, value=None):
2243
1426
if value is None: # get
2246
1429
self.start_checker()
2247
1430
else:
2248
1431
self.stop_checker()
2249
1432
2250
1433
# ObjectPath - property
2251
@dbus_annotations(
2252
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2253
"org.freedesktop.DBus.Deprecated": "true"})
2254
1434
@dbus_service_property(_interface, signature="o", access="read")
2255
1435
def ObjectPath_dbus_property(self):
2256
return self.dbus_object_path # is already a dbus.ObjectPath
2257
1436
return self.dbus_object_path # is already a dbus.ObjectPath
1437
2258
1438
# Secret = property
2259
@dbus_annotations(
2260
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2261
"invalidates"})
2262
@dbus_service_property(_interface,
2263
signature="ay",
2264
access="write",
2265
byte_arrays=True)
1439
@dbus_service_property(_interface, signature="ay",
1440
access="write", byte_arrays=True)
2266
1441
def Secret_dbus_property(self, value):
2267
self.secret = bytes(value)
2268
1442
self.secret = str(value)
1443
2269
1444
del _interface
2270
1445
2271
1446
2272
class ProxyClient:
2273
def __init__(self, child_pipe, key_id, fpr, address):
1447
class ProxyClient(object):
1448
def __init__(self, child_pipe, fpr, address):
2274
1449
self._pipe = child_pipe
2275
self._pipe.send(('init', key_id, fpr, address))
1450
self._pipe.send(('init', fpr, address))
2276
1451
if not self._pipe.recv():
2277
raise KeyError(key_id or fpr)
2278
1452
raise KeyError()
1453
2279
1454
def __getattribute__(self, name):
2280
1455
if name == '_pipe':
2281
1456
return super(ProxyClient, self).__getattribute__(name)
2284
1459
if data[0] == 'data':
2285
1460
return data[1]
2286
1461
if data[0] == 'function':
2287
2288
1462
def func(*args, **kwargs):
2289
1463
self._pipe.send(('funcall', name, args, kwargs))
2290
1464
return self._pipe.recv()[1]
2291
2292
1465
return func
2293
1466
2294
1467
def __setattr__(self, name, value):
2295
1468
if name == '_pipe':
2296
1469
return super(ProxyClient, self).__setattr__(name, value)
2297
1470
self._pipe.send(('setattr', name, value))
2298
1471
2299
1472
1473
class ClientDBusTransitional(ClientDBus):
1474
__metaclass__ = AlternateDBusNamesMetaclass
1475
1476
2300
1477
class ClientHandler(socketserver.BaseRequestHandler, object):
2301
1478
"""A class to handle client connections.
2302
1479
2303
1480
Instantiated once for each connection to handle it.
2304
1481
Note: This will run in its own forked process."""
2305
1482
2306
1483
def handle(self):
2307
1484
with contextlib.closing(self.server.child_pipe) as child_pipe:
2308
1485
logger.info("TCP connection from: %s",
2309
str(self.client_address))
1486
unicode(self.client_address))
2310
1487
logger.debug("Pipe FD: %d",
2311
1488
self.server.child_pipe.fileno())
2312
2313
session = gnutls.ClientSession(self.request)
2314
2315
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2316
# "+AES-256-CBC", "+SHA1",
2317
# "+COMP-NULL", "+CTYPE-OPENPGP",
2318
# "+DHE-DSS"))
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"))
2319
1504
# Use a fallback default, since this MUST be set.
2320
1505
priority = self.server.gnutls_priority
2321
1506
if priority is None:
2322
1507
priority = "NORMAL"
2323
gnutls.priority_set_direct(session,
2324
priority.encode("utf-8"), None)
2325
1508
(gnutls.library.functions
1509
.gnutls_priority_set_direct(session._c_object,
1510
priority, None))
1511
2326
1512
# Start communication using the Mandos protocol
2327
1513
# Get protocol number
2328
1514
line = self.request.makefile().readline()
2329
1515
logger.debug("Protocol version: %r", line)
2330
1516
try:
2331
1517
if int(line.strip().split()[0]) > 1:
2332
raise RuntimeError(line)
1518
raise RuntimeError
2333
1519
except (ValueError, IndexError, RuntimeError) as error:
2334
1520
logger.error("Unknown protocol version: %s", error)
2335
1521
return
2336
1522
2337
1523
# Start GnuTLS connection
2338
1524
try:
2339
1525
session.handshake()
2340
except gnutls.Error as error:
1526
except gnutls.errors.GNUTLSError as error:
2341
1527
logger.warning("Handshake failed: %s", error)
2342
1528
# Do not run session.bye() here: the session is not
2343
1529
# established. Just abandon the request.
2344
1530
return
2345
1531
logger.debug("Handshake succeeded")
2346
1532
2347
1533
approval_required = False
2348
1534
try:
2349
if gnutls.has_rawpk:
2350
fpr = b""
2351
try:
2352
key_id = self.key_id(
2353
self.peer_certificate(session))
2354
except (TypeError, gnutls.Error) as error:
2355
logger.warning("Bad certificate: %s", error)
2356
return
2357
logger.debug("Key ID: %s",
2358
key_id.decode("utf-8",
2359
errors="replace"))
2360
2361
else:
2362
key_id = b""
2363
try:
2364
fpr = self.fingerprint(
2365
self.peer_certificate(session))
2366
except (TypeError, gnutls.Error) as error:
2367
logger.warning("Bad certificate: %s", error)
2368
return
2369
logger.debug("Fingerprint: %s", fpr)
2370
2371
try:
2372
client = ProxyClient(child_pipe, key_id, fpr,
1535
try:
1536
fpr = self.fingerprint(self.peer_certificate
1537
(session))
1538
except (TypeError,
1539
gnutls.errors.GNUTLSError) as error:
1540
logger.warning("Bad certificate: %s", error)
1541
return
1542
logger.debug("Fingerprint: %s", fpr)
1543
1544
try:
1545
client = ProxyClient(child_pipe, fpr,
2373
1546
self.client_address)
2374
1547
except KeyError:
2375
1548
return
2376
1549
1550
if self.server.use_dbus:
1551
# Emit D-Bus signal
1552
client.NewRequest(str(self.client_address))
1553
2377
1554
if client.approval_delay:
2378
1555
delay = client.approval_delay
2379
1556
client.approvals_pending += 1
2380
1557
approval_required = True
2381
1558
2382
1559
while True:
2383
1560
if not client.enabled:
2384
1561
logger.info("Client %s is disabled",
2385
client.name)
1562
client.name)
2386
1563
if self.server.use_dbus:
2387
1564
# Emit D-Bus signal
2388
1565
client.Rejected("Disabled")
2389
1566
return
2390
1567
2391
1568
if client.approved or not client.approval_delay:
2392
# We are approved or approval is disabled
1569
#We are approved or approval is disabled
2393
1570
break
2394
1571
elif client.approved is None:
2395
1572
logger.info("Client %s needs approval",
2397
1574
if self.server.use_dbus:
2398
1575
# Emit D-Bus signal
2399
1576
client.NeedApproval(
2400
client.approval_delay.total_seconds()
2401
* 1000, client.approved_by_default)
1577
client.approval_delay_milliseconds(),
1578
client.approved_by_default)
2402
1579
else:
2403
1580
logger.warning("Client %s was not approved",
2404
1581
client.name)
2406
1583
# Emit D-Bus signal
2407
1584
client.Rejected("Denied")
2408
1585
return
2409
2410
# wait until timeout or approved
1586
1587
#wait until timeout or approved
2411
1588
time = datetime.datetime.now()
2412
1589
client.changedstate.acquire()
2413
client.changedstate.wait(delay.total_seconds())
1590
(client.changedstate.wait
1591
(float(client.timedelta_to_milliseconds(delay)
1592
/ 1000)))
2414
1593
client.changedstate.release()
2415
1594
time2 = datetime.datetime.now()
2416
1595
if (time2 - time) >= delay:
2426
1605
break
2427
1606
else:
2428
1607
delay -= time2 - time
2429
2430
try:
2431
session.send(client.secret)
2432
except gnutls.Error as error:
2433
logger.warning("gnutls send failed",
2434
exc_info=error)
2435
return
2436
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
2437
1621
logger.info("Sending secret to %s", client.name)
2438
1622
# bump the timeout using extended_timeout
2439
client.bump_timeout(client.extended_timeout)
1623
client.checked_ok(client.extended_timeout)
2440
1624
if self.server.use_dbus:
2441
1625
# Emit D-Bus signal
2442
1626
client.GotSecret()
2443
1627
2444
1628
finally:
2445
1629
if approval_required:
2446
1630
client.approvals_pending -= 1
2447
1631
try:
2448
1632
session.bye()
2449
except gnutls.Error as error:
2450
logger.warning("GnuTLS bye failed",
2451
exc_info=error)
2452
1633
except gnutls.errors.GNUTLSError as error:
1634
logger.warning("GnuTLS bye failed")
1635
2453
1636
@staticmethod
2454
1637
def peer_certificate(session):
2455
"Return the peer's certificate as a bytestring"
2456
try:
2457
cert_type = gnutls.certificate_type_get2(
2458
session, gnutls.CTYPE_PEERS)
2459
except AttributeError:
2460
cert_type = gnutls.certificate_type_get(session)
2461
if gnutls.has_rawpk:
2462
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2463
else:
2464
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2465
# If not a valid certificate type...
2466
if cert_type not in valid_cert_types:
2467
logger.info("Cert type %r not in %r", cert_type,
2468
valid_cert_types)
2469
# ...return invalid data
2470
return b""
1638
"Return the peer's OpenPGP certificate as a bytestring"
1639
# If not an OpenPGP certificate...
1640
if (gnutls.library.functions
1641
.gnutls_certificate_type_get(session._c_object)
1642
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1643
# ...do the normal thing
1644
return session.peer_certificate
2471
1645
list_size = ctypes.c_uint(1)
2472
cert_list = (gnutls.certificate_get_peers
2473
(session, ctypes.byref(list_size)))
1646
cert_list = (gnutls.library.functions
1647
.gnutls_certificate_get_peers
1648
(session._c_object, ctypes.byref(list_size)))
2474
1649
if not bool(cert_list) and list_size.value != 0:
2475
raise gnutls.Error("error getting peer certificate")
1650
raise gnutls.errors.GNUTLSError("error getting peer"
1651
" certificate")
2476
1652
if list_size.value == 0:
2477
1653
return None
2478
1654
cert = cert_list[0]
2479
1655
return ctypes.string_at(cert.data, cert.size)
2480
2481
@staticmethod
2482
def key_id(certificate):
2483
"Convert a certificate bytestring to a hexdigit key ID"
2484
# New GnuTLS "datum" with the public key
2485
datum = gnutls.datum_t(
2486
ctypes.cast(ctypes.c_char_p(certificate),
2487
ctypes.POINTER(ctypes.c_ubyte)),
2488
ctypes.c_uint(len(certificate)))
2489
# XXX all these need to be created in the gnutls "module"
2490
# New empty GnuTLS certificate
2491
pubkey = gnutls.pubkey_t()
2492
gnutls.pubkey_init(ctypes.byref(pubkey))
2493
# Import the raw public key into the certificate
2494
gnutls.pubkey_import(pubkey,
2495
ctypes.byref(datum),
2496
gnutls.X509_FMT_DER)
2497
# New buffer for the key ID
2498
buf = ctypes.create_string_buffer(32)
2499
buf_len = ctypes.c_size_t(len(buf))
2500
# Get the key ID from the raw public key into the buffer
2501
gnutls.pubkey_get_key_id(
2502
pubkey,
2503
gnutls.KEYID_USE_SHA256,
2504
ctypes.cast(ctypes.byref(buf),
2505
ctypes.POINTER(ctypes.c_ubyte)),
2506
ctypes.byref(buf_len))
2507
# Deinit the certificate
2508
gnutls.pubkey_deinit(pubkey)
2509
2510
# Convert the buffer to a Python bytestring
2511
key_id = ctypes.string_at(buf, buf_len.value)
2512
# Convert the bytestring to hexadecimal notation
2513
hex_key_id = binascii.hexlify(key_id).upper()
2514
return hex_key_id
2515
1656
2516
1657
@staticmethod
2517
1658
def fingerprint(openpgp):
2518
1659
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2519
1660
# New GnuTLS "datum" with the OpenPGP public key
2520
datum = gnutls.datum_t(
2521
ctypes.cast(ctypes.c_char_p(openpgp),
2522
ctypes.POINTER(ctypes.c_ubyte)),
2523
ctypes.c_uint(len(openpgp)))
1661
datum = (gnutls.library.types
1662
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1663
ctypes.POINTER
1664
(ctypes.c_ubyte)),
1665
ctypes.c_uint(len(openpgp))))
2524
1666
# New empty GnuTLS certificate
2525
crt = gnutls.openpgp_crt_t()
2526
gnutls.openpgp_crt_init(ctypes.byref(crt))
1667
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1668
(gnutls.library.functions
1669
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2527
1670
# Import the OpenPGP public key into the certificate
2528
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2529
gnutls.OPENPGP_FMT_RAW)
1671
(gnutls.library.functions
1672
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1673
gnutls.library.constants
1674
.GNUTLS_OPENPGP_FMT_RAW))
2530
1675
# Verify the self signature in the key
2531
1676
crtverify = ctypes.c_uint()
2532
gnutls.openpgp_crt_verify_self(crt, 0,
2533
ctypes.byref(crtverify))
1677
(gnutls.library.functions
1678
.gnutls_openpgp_crt_verify_self(crt, 0,
1679
ctypes.byref(crtverify)))
2534
1680
if crtverify.value != 0:
2535
gnutls.openpgp_crt_deinit(crt)
2536
raise gnutls.CertificateSecurityError(code
2537
=crtverify.value)
1681
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1682
raise (gnutls.errors.CertificateSecurityError
1683
("Verify failed"))
2538
1684
# New buffer for the fingerprint
2539
1685
buf = ctypes.create_string_buffer(20)
2540
1686
buf_len = ctypes.c_size_t()
2541
1687
# Get the fingerprint from the certificate into the buffer
2542
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2543
ctypes.byref(buf_len))
1688
(gnutls.library.functions
1689
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1690
ctypes.byref(buf_len)))
2544
1691
# Deinit the certificate
2545
gnutls.openpgp_crt_deinit(crt)
1692
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2546
1693
# Convert the buffer to a Python bytestring
2547
1694
fpr = ctypes.string_at(buf, buf_len.value)
2548
1695
# Convert the bytestring to hexadecimal notation
2550
1697
return hex_fpr
2551
1698
2552
1699
2553
class MultiprocessingMixIn:
1700
class MultiprocessingMixIn(object):
2554
1701
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2555
2556
1702
def sub_process_main(self, request, address):
2557
1703
try:
2558
1704
self.finish_request(request, address)
2559
1705
except Exception:
2560
1706
self.handle_error(request, address)
2561
1707
self.close_request(request)
2562
1708
2563
1709
def process_request(self, request, address):
2564
1710
"""Start a new process to process the request."""
2565
proc = multiprocessing.Process(target=self.sub_process_main,
2566
args=(request, address))
1711
proc = multiprocessing.Process(target = self.sub_process_main,
1712
args = (request,
1713
address))
2567
1714
proc.start()
2568
1715
return proc
2569
1716
2570
1717
2571
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1718
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2572
1719
""" adds a pipe to the MixIn """
2573
2574
1720
def process_request(self, request, client_address):
2575
1721
"""Overrides and wraps the original process_request().
2576
1722
2577
1723
This function creates a new pipe in self.pipe
2578
1724
"""
2579
1725
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2580
1726
2581
1727
proc = MultiprocessingMixIn.process_request(self, request,
2582
1728
client_address)
2583
1729
self.child_pipe.close()
2584
1730
self.add_pipe(parent_pipe, proc)
2585
1731
2586
1732
def add_pipe(self, parent_pipe, proc):
2587
1733
"""Dummy function; override as necessary"""
2588
raise NotImplementedError()
1734
raise NotImplementedError
2589
1735
2590
1736
2591
1737
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2592
socketserver.TCPServer):
1738
socketserver.TCPServer, object):
2593
1739
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2594
1740
2595
1741
Attributes:
2596
1742
enabled: Boolean; whether this server is activated yet
2597
1743
interface: None or a network interface name (string)
2598
1744
use_ipv6: Boolean; to use IPv6 or not
2599
1745
"""
2600
2601
1746
def __init__(self, server_address, RequestHandlerClass,
2602
interface=None,
2603
use_ipv6=True,
2604
socketfd=None):
2605
"""If socketfd is set, use that file descriptor instead of
2606
creating a new one with socket.socket().
2607
"""
1747
interface=None, use_ipv6=True):
2608
1748
self.interface = interface
2609
1749
if use_ipv6:
2610
1750
self.address_family = socket.AF_INET6
2611
if socketfd is not None:
2612
# Save the file descriptor
2613
self.socketfd = socketfd
2614
# Save the original socket.socket() function
2615
self.socket_socket = socket.socket
2616
2617
# To implement --socket, we monkey patch socket.socket.
2618
#
2619
# (When socketserver.TCPServer is a new-style class, we
2620
# could make self.socket into a property instead of monkey
2621
# patching socket.socket.)
2622
#
2623
# Create a one-time-only replacement for socket.socket()
2624
@functools.wraps(socket.socket)
2625
def socket_wrapper(*args, **kwargs):
2626
# Restore original function so subsequent calls are
2627
# not affected.
2628
socket.socket = self.socket_socket
2629
del self.socket_socket
2630
# This time only, return a new socket object from the
2631
# saved file descriptor.
2632
return socket.fromfd(self.socketfd, *args, **kwargs)
2633
# Replace socket.socket() function with wrapper
2634
socket.socket = socket_wrapper
2635
# The socketserver.TCPServer.__init__ will call
2636
# socket.socket(), which might be our replacement,
2637
# socket_wrapper(), if socketfd was set.
2638
1751
socketserver.TCPServer.__init__(self, server_address,
2639
1752
RequestHandlerClass)
2640
2641
1753
def server_bind(self):
2642
1754
"""This overrides the normal server_bind() function
2643
1755
to bind to an interface if one was specified, and also NOT to
2644
1756
bind to an address or port if they were not specified."""
2645
global SO_BINDTODEVICE
2646
1757
if self.interface is not None:
2647
1758
if SO_BINDTODEVICE is None:
2648
# Fall back to a hard-coded value which seems to be
2649
# common enough.
2650
logger.warning("SO_BINDTODEVICE not found, trying 25")
2651
SO_BINDTODEVICE = 25
2652
try:
2653
self.socket.setsockopt(
2654
socket.SOL_SOCKET, SO_BINDTODEVICE,
2655
(self.interface + "\0").encode("utf-8"))
2656
except socket.error as error:
2657
if error.errno == errno.EPERM:
2658
logger.error("No permission to bind to"
2659
" interface %s", self.interface)
2660
elif error.errno == errno.ENOPROTOOPT:
2661
logger.error("SO_BINDTODEVICE not available;"
2662
" cannot bind to interface %s",
2663
self.interface)
2664
elif error.errno == errno.ENODEV:
2665
logger.error("Interface %s does not exist,"
2666
" cannot bind", self.interface)
2667
else:
2668
raise
1759
logger.error("SO_BINDTODEVICE does not exist;"
1760
" cannot bind to interface %s",
1761
self.interface)
1762
else:
1763
try:
1764
self.socket.setsockopt(socket.SOL_SOCKET,
1765
SO_BINDTODEVICE,
1766
str(self.interface
1767
+ '\0'))
1768
except socket.error as error:
1769
if error[0] == errno.EPERM:
1770
logger.error("No permission to"
1771
" bind to interface %s",
1772
self.interface)
1773
elif error[0] == errno.ENOPROTOOPT:
1774
logger.error("SO_BINDTODEVICE not available;"
1775
" cannot bind to interface %s",
1776
self.interface)
1777
else:
1778
raise
2669
1779
# Only bind(2) the socket if we really need to.
2670
1780
if self.server_address[0] or self.server_address[1]:
2671
if self.server_address[1]:
2672
self.allow_reuse_address = True
2673
1781
if not self.server_address[0]:
2674
1782
if self.address_family == socket.AF_INET6:
2675
any_address = "::" # in6addr_any
1783
any_address = "::" # in6addr_any
2676
1784
else:
2677
any_address = "0.0.0.0" # INADDR_ANY
1785
any_address = socket.INADDR_ANY
2678
1786
self.server_address = (any_address,
2679
1787
self.server_address[1])
2680
1788
elif not self.server_address[1]:
2681
self.server_address = (self.server_address[0], 0)
1789
self.server_address = (self.server_address[0],
1790
0)
2682
1791
# if self.interface:
2683
1792
# self.server_address = (self.server_address[0],
2684
1793
# 0, # port
2690
1799
2691
1800
class MandosServer(IPv6_TCPServer):
2692
1801
"""Mandos server.
2693
1802
2694
1803
Attributes:
2695
1804
clients: set of Client objects
2696
1805
gnutls_priority GnuTLS priority string
2697
1806
use_dbus: Boolean; to emit D-Bus signals or not
2698
2699
Assumes a GLib.MainLoop event loop.
1807
1808
Assumes a gobject.MainLoop event loop.
2700
1809
"""
2701
2702
1810
def __init__(self, server_address, RequestHandlerClass,
2703
interface=None,
2704
use_ipv6=True,
2705
clients=None,
2706
gnutls_priority=None,
2707
use_dbus=True,
2708
socketfd=None):
1811
interface=None, use_ipv6=True, clients=None,
1812
gnutls_priority=None, use_dbus=True):
2709
1813
self.enabled = False
2710
1814
self.clients = clients
2711
1815
if self.clients is None:
2714
1818
self.gnutls_priority = gnutls_priority
2715
1819
IPv6_TCPServer.__init__(self, server_address,
2716
1820
RequestHandlerClass,
2717
interface=interface,
2718
use_ipv6=use_ipv6,
2719
socketfd=socketfd)
2720
1821
interface = interface,
1822
use_ipv6 = use_ipv6)
2721
1823
def server_activate(self):
2722
1824
if self.enabled:
2723
1825
return socketserver.TCPServer.server_activate(self)
2724
1826
2725
1827
def enable(self):
2726
1828
self.enabled = True
2727
1829
2728
1830
def add_pipe(self, parent_pipe, proc):
2729
1831
# Call "handle_ipc" for both data and EOF events
2730
GLib.io_add_watch(
2731
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2732
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2733
functools.partial(self.handle_ipc,
2734
parent_pipe=parent_pipe,
2735
proc=proc))
2736
2737
def handle_ipc(self, source, condition,
2738
parent_pipe=None,
2739
proc=None,
2740
client_object=None):
1832
gobject.io_add_watch(parent_pipe.fileno(),
1833
gobject.IO_IN | gobject.IO_HUP,
1834
functools.partial(self.handle_ipc,
1835
parent_pipe =
1836
parent_pipe,
1837
proc = proc))
1838
1839
def handle_ipc(self, source, condition, parent_pipe=None,
1840
proc = None, client_object=None):
1841
condition_names = {
1842
gobject.IO_IN: "IN", # There is data to read.
1843
gobject.IO_OUT: "OUT", # Data can be written (without
1844
# blocking).
1845
gobject.IO_PRI: "PRI", # There is urgent data to read.
1846
gobject.IO_ERR: "ERR", # Error condition.
1847
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1848
# broken, usually for pipes and
1849
# sockets).
1850
}
1851
conditions_string = ' | '.join(name
1852
for cond, name in
1853
condition_names.iteritems()
1854
if cond & condition)
2741
1855
# error, or the other end of multiprocessing.Pipe has closed
2742
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1856
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2743
1857
# Wait for other process to exit
2744
1858
proc.join()
2745
1859
return False
2746
1860
2747
1861
# Read a request from the child
2748
1862
request = parent_pipe.recv()
2749
1863
command = request[0]
2750
1864
2751
1865
if command == 'init':
2752
key_id = request[1].decode("ascii")
2753
fpr = request[2].decode("ascii")
2754
address = request[3]
2755
2756
for c in self.clients.values():
2757
if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"
2758
"27AE41E4649B934CA495991B7852B855"):
2759
continue
2760
if key_id and c.key_id == key_id:
2761
client = c
2762
break
2763
if fpr and c.fingerprint == fpr:
1866
fpr = request[1]
1867
address = request[2]
1868
1869
for c in self.clients.itervalues():
1870
if c.fingerprint == fpr:
2764
1871
client = c
2765
1872
break
2766
1873
else:
2767
logger.info("Client not found for key ID: %s, address"
2768
": %s", key_id or fpr, address)
1874
logger.info("Client not found for fingerprint: %s, ad"
1875
"dress: %s", fpr, address)
2769
1876
if self.use_dbus:
2770
1877
# Emit D-Bus signal
2771
mandos_dbus_service.ClientNotFound(key_id or fpr,
1878
mandos_dbus_service.ClientNotFound(fpr,
2772
1879
address[0])
2773
1880
parent_pipe.send(False)
2774
1881
return False
2775
2776
GLib.io_add_watch(
2777
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2778
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2779
functools.partial(self.handle_ipc,
2780
parent_pipe=parent_pipe,
2781
proc=proc,
2782
client_object=client))
1882
1883
gobject.io_add_watch(parent_pipe.fileno(),
1884
gobject.IO_IN | gobject.IO_HUP,
1885
functools.partial(self.handle_ipc,
1886
parent_pipe =
1887
parent_pipe,
1888
proc = proc,
1889
client_object =
1890
client))
2783
1891
parent_pipe.send(True)
2784
1892
# remove the old hook in favor of the new above hook on
2785
1893
# same fileno
2788
1896
funcname = request[1]
2789
1897
args = request[2]
2790
1898
kwargs = request[3]
2791
1899
2792
1900
parent_pipe.send(('data', getattr(client_object,
2793
1901
funcname)(*args,
2794
**kwargs)))
2795
1902
**kwargs)))
1903
2796
1904
if command == 'getattr':
2797
1905
attrname = request[1]
2798
if isinstance(client_object.__getattribute__(attrname),
2799
collections.abc.Callable):
2800
parent_pipe.send(('function', ))
1906
if callable(client_object.__getattribute__(attrname)):
1907
parent_pipe.send(('function',))
2801
1908
else:
2802
parent_pipe.send((
2803
'data', client_object.__getattribute__(attrname)))
2804
1909
parent_pipe.send(('data', client_object
1910
.__getattribute__(attrname)))
1911
2805
1912
if command == 'setattr':
2806
1913
attrname = request[1]
2807
1914
value = request[2]
2808
1915
setattr(client_object, attrname, value)
2809
1916
2810
1917
return True
2811
1918
2812
1919
2813
def rfc3339_duration_to_delta(duration):
2814
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2815
2816
>>> timedelta = datetime.timedelta
2817
>>> rfc3339_duration_to_delta("P7D") == timedelta(7)
2818
True
2819
>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)
2820
True
2821
>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)
2822
True
2823
>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)
2824
True
2825
>>> rfc3339_duration_to_delta("P1W") == timedelta(7)
2826
True
2827
>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)
2828
True
2829
>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)
2830
True
2831
>>> del timedelta
2832
"""
2833
2834
# Parsing an RFC 3339 duration with regular expressions is not
2835
# possible - there would have to be multiple places for the same
2836
# values, like seconds. The current code, while more esoteric, is
2837
# cleaner without depending on a parsing library. If Python had a
2838
# built-in library for parsing we would use it, but we'd like to
2839
# avoid excessive use of external libraries.
2840
2841
# New type for defining tokens, syntax, and semantics all-in-one
2842
Token = collections.namedtuple("Token", (
2843
"regexp", # To match token; if "value" is not None, must have
2844
# a "group" containing digits
2845
"value", # datetime.timedelta or None
2846
"followers")) # Tokens valid after this token
2847
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2848
# the "duration" ABNF definition in RFC 3339, Appendix A.
2849
token_end = Token(re.compile(r"$"), None, frozenset())
2850
token_second = Token(re.compile(r"(\d+)S"),
2851
datetime.timedelta(seconds=1),
2852
frozenset((token_end, )))
2853
token_minute = Token(re.compile(r"(\d+)M"),
2854
datetime.timedelta(minutes=1),
2855
frozenset((token_second, token_end)))
2856
token_hour = Token(re.compile(r"(\d+)H"),
2857
datetime.timedelta(hours=1),
2858
frozenset((token_minute, token_end)))
2859
token_time = Token(re.compile(r"T"),
2860
None,
2861
frozenset((token_hour, token_minute,
2862
token_second)))
2863
token_day = Token(re.compile(r"(\d+)D"),
2864
datetime.timedelta(days=1),
2865
frozenset((token_time, token_end)))
2866
token_month = Token(re.compile(r"(\d+)M"),
2867
datetime.timedelta(weeks=4),
2868
frozenset((token_day, token_end)))
2869
token_year = Token(re.compile(r"(\d+)Y"),
2870
datetime.timedelta(weeks=52),
2871
frozenset((token_month, token_end)))
2872
token_week = Token(re.compile(r"(\d+)W"),
2873
datetime.timedelta(weeks=1),
2874
frozenset((token_end, )))
2875
token_duration = Token(re.compile(r"P"), None,
2876
frozenset((token_year, token_month,
2877
token_day, token_time,
2878
token_week)))
2879
# Define starting values:
2880
# Value so far
2881
value = datetime.timedelta()
2882
found_token = None
2883
# Following valid tokens
2884
followers = frozenset((token_duration, ))
2885
# String left to parse
2886
s = duration
2887
# Loop until end token is found
2888
while found_token is not token_end:
2889
# Search for any currently valid tokens
2890
for token in followers:
2891
match = token.regexp.match(s)
2892
if match is not None:
2893
# Token found
2894
if token.value is not None:
2895
# Value found, parse digits
2896
factor = int(match.group(1), 10)
2897
# Add to value so far
2898
value += factor * token.value
2899
# Strip token from string
2900
s = token.regexp.sub("", s, 1)
2901
# Go to found token
2902
found_token = token
2903
# Set valid next tokens
2904
followers = found_token.followers
2905
break
2906
else:
2907
# No currently valid tokens were found
2908
raise ValueError("Invalid RFC 3339 duration: {!r}"
2909
.format(duration))
2910
# End token found
2911
return value
2912
2913
2914
1920
def string_to_delta(interval):
2915
1921
"""Parse a string and return a datetime.timedelta
2916
2917
>>> string_to_delta('7d') == datetime.timedelta(7)
2918
True
2919
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2920
True
2921
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2922
True
2923
>>> string_to_delta('24h') == datetime.timedelta(1)
2924
True
2925
>>> string_to_delta('1w') == datetime.timedelta(7)
2926
True
2927
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2928
True
1922
1923
>>> string_to_delta('7d')
1924
datetime.timedelta(7)
1925
>>> string_to_delta('60s')
1926
datetime.timedelta(0, 60)
1927
>>> string_to_delta('60m')
1928
datetime.timedelta(0, 3600)
1929
>>> string_to_delta('24h')
1930
datetime.timedelta(1)
1931
>>> string_to_delta('1w')
1932
datetime.timedelta(7)
1933
>>> string_to_delta('5m 30s')
1934
datetime.timedelta(0, 330)
2929
1935
"""
2930
2931
try:
2932
return rfc3339_duration_to_delta(interval)
2933
except ValueError:
2934
pass
2935
2936
1936
timevalue = datetime.timedelta(0)
2937
1937
for s in interval.split():
2938
1938
try:
2939
suffix = s[-1]
1939
suffix = unicode(s[-1])
2940
1940
value = int(s[:-1])
2941
1941
if suffix == "d":
2942
1942
delta = datetime.timedelta(value)
2949
1949
elif suffix == "w":
2950
1950
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2951
1951
else:
2952
raise ValueError("Unknown suffix {!r}".format(suffix))
2953
except IndexError as e:
1952
raise ValueError("Unknown suffix %r" % suffix)
1953
except (ValueError, IndexError) as e:
2954
1954
raise ValueError(*(e.args))
2955
1955
timevalue += delta
2956
1956
return timevalue
2957
1957
2958
1958
2959
def daemon(nochdir=False, noclose=False):
1959
def daemon(nochdir = False, noclose = False):
2960
1960
"""See daemon(3). Standard BSD Unix function.
2961
1961
2962
1962
This should really exist as os.daemon, but it doesn't (yet)."""
2963
1963
if os.fork():
2964
1964
sys.exit()
2969
1969
sys.exit()
2970
1970
if not noclose:
2971
1971
# Close all standard open file descriptors
2972
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1972
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2973
1973
if not stat.S_ISCHR(os.fstat(null).st_mode):
2974
1974
raise OSError(errno.ENODEV,
2975
"{} not a character device"
2976
.format(os.devnull))
1975
"%s not a character device"
1976
% os.path.devnull)
2977
1977
os.dup2(null, sys.stdin.fileno())
2978
1978
os.dup2(null, sys.stdout.fileno())
2979
1979
os.dup2(null, sys.stderr.fileno())
2982
1982
2983
1983
2984
1984
def main():
2985
1985
2986
1986
##################################################################
2987
1987
# Parsing of options, both command line and config file
2988
1988
2989
1989
parser = argparse.ArgumentParser()
2990
1990
parser.add_argument("-v", "--version", action="version",
2991
version="%(prog)s {}".format(version),
1991
version = "%%(prog)s %s" % version,
2992
1992
help="show version number and exit")
2993
1993
parser.add_argument("-i", "--interface", metavar="IF",
2994
1994
help="Bind to interface IF")
3000
2000
help="Run self-test")
3001
2001
parser.add_argument("--debug", action="store_true",
3002
2002
help="Debug mode; run in foreground and log"
3003
" to terminal", default=None)
2003
" to terminal")
3004
2004
parser.add_argument("--debuglevel", metavar="LEVEL",
3005
2005
help="Debug level for stdout output")
3006
2006
parser.add_argument("--priority", help="GnuTLS"
3013
2013
" files")
3014
2014
parser.add_argument("--no-dbus", action="store_false",
3015
2015
dest="use_dbus", help="Do not provide D-Bus"
3016
" system bus interface", default=None)
2016
" system bus interface")
3017
2017
parser.add_argument("--no-ipv6", action="store_false",
3018
dest="use_ipv6", help="Do not use IPv6",
3019
default=None)
2018
dest="use_ipv6", help="Do not use IPv6")
3020
2019
parser.add_argument("--no-restore", action="store_false",
3021
2020
dest="restore", help="Do not restore stored"
3022
" state", default=None)
3023
parser.add_argument("--socket", type=int,
3024
help="Specify a file descriptor to a network"
3025
" socket to use instead of creating one")
2021
" state")
3026
2022
parser.add_argument("--statedir", metavar="DIR",
3027
2023
help="Directory to save/restore state in")
3028
parser.add_argument("--foreground", action="store_true",
3029
help="Run in foreground", default=None)
3030
parser.add_argument("--no-zeroconf", action="store_false",
3031
dest="zeroconf", help="Do not use Zeroconf",
3032
default=None)
3033
2024
3034
2025
options = parser.parse_args()
3035
2026
2027
if options.check:
2028
import doctest
2029
doctest.testmod()
2030
sys.exit()
2031
3036
2032
# Default values for config file for server-global settings
3037
if gnutls.has_rawpk:
3038
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3039
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3040
else:
3041
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3042
":+SIGN-DSA-SHA256")
3043
server_defaults = {"interface": "",
3044
"address": "",
3045
"port": "",
3046
"debug": "False",
3047
"priority": priority,
3048
"servicename": "Mandos",
3049
"use_dbus": "True",
3050
"use_ipv6": "True",
3051
"debuglevel": "",
3052
"restore": "True",
3053
"socket": "",
3054
"statedir": "/var/lib/mandos",
3055
"foreground": "False",
3056
"zeroconf": "True",
3057
}
3058
del priority
3059
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
3060
2047
# Parse config file for server-global settings
3061
server_config = configparser.ConfigParser(server_defaults)
2048
server_config = configparser.SafeConfigParser(server_defaults)
3062
2049
del server_defaults
3063
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3064
# Convert the ConfigParser object to a dict
2050
server_config.read(os.path.join(options.configdir,
2051
"mandos.conf"))
2052
# Convert the SafeConfigParser object to a dict
3065
2053
server_settings = server_config.defaults()
3066
2054
# Use the appropriate methods on the non-string config options
3067
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3068
"foreground", "zeroconf"):
2055
for option in ("debug", "use_dbus", "use_ipv6"):
3069
2056
server_settings[option] = server_config.getboolean("DEFAULT",
3070
2057
option)
3071
2058
if server_settings["port"]:
3072
2059
server_settings["port"] = server_config.getint("DEFAULT",
3073
2060
"port")
3074
if server_settings["socket"]:
3075
server_settings["socket"] = server_config.getint("DEFAULT",
3076
"socket")
3077
# Later, stdin will, and stdout and stderr might, be dup'ed
3078
# over with an opened os.devnull. But we don't want this to
3079
# happen with a supplied network socket.
3080
if 0 <= server_settings["socket"] <= 2:
3081
server_settings["socket"] = os.dup(server_settings
3082
["socket"])
3083
2061
del server_config
3084
2062
3085
2063
# Override the settings from the config file with command line
3086
2064
# options, if set.
3087
2065
for option in ("interface", "address", "port", "debug",
3088
"priority", "servicename", "configdir", "use_dbus",
3089
"use_ipv6", "debuglevel", "restore", "statedir",
3090
"socket", "foreground", "zeroconf"):
2066
"priority", "servicename", "configdir",
2067
"use_dbus", "use_ipv6", "debuglevel", "restore",
2068
"statedir"):
3091
2069
value = getattr(options, option)
3092
2070
if value is not None:
3093
2071
server_settings[option] = value
3094
2072
del options
3095
2073
# Force all strings to be unicode
3096
2074
for option in server_settings.keys():
3097
if isinstance(server_settings[option], bytes):
3098
server_settings[option] = (server_settings[option]
3099
.decode("utf-8"))
3100
# Force all boolean options to be boolean
3101
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3102
"foreground", "zeroconf"):
3103
server_settings[option] = bool(server_settings[option])
3104
# Debug implies foreground
3105
if server_settings["debug"]:
3106
server_settings["foreground"] = True
2075
if type(server_settings[option]) is str:
2076
server_settings[option] = unicode(server_settings[option])
3107
2077
# Now we have our good server settings in "server_settings"
3108
2078
3109
2079
##################################################################
3110
3111
if (not server_settings["zeroconf"]
3112
and not (server_settings["port"]
3113
or server_settings["socket"] != "")):
3114
parser.error("Needs port or socket to work without Zeroconf")
3115
2080
3116
2081
# For convenience
3117
2082
debug = server_settings["debug"]
3118
2083
debuglevel = server_settings["debuglevel"]
3120
2085
use_ipv6 = server_settings["use_ipv6"]
3121
2086
stored_state_path = os.path.join(server_settings["statedir"],
3122
2087
stored_state_file)
3123
foreground = server_settings["foreground"]
3124
zeroconf = server_settings["zeroconf"]
3125
2088
3126
2089
if debug:
3127
2090
initlogger(debug, logging.DEBUG)
3128
2091
else:
3131
2094
else:
3132
2095
level = getattr(logging, debuglevel.upper())
3133
2096
initlogger(debug, level)
3134
2097
3135
2098
if server_settings["servicename"] != "Mandos":
3136
syslogger.setFormatter(
3137
logging.Formatter('Mandos ({}) [%(process)d]:'
3138
' %(levelname)s: %(message)s'.format(
3139
server_settings["servicename"])))
3140
2099
syslogger.setFormatter(logging.Formatter
2100
('Mandos (%s) [%%(process)d]:'
2101
' %%(levelname)s: %%(message)s'
2102
% server_settings["servicename"]))
2103
3141
2104
# Parse config file with clients
3142
client_config = configparser.ConfigParser(Client.client_defaults)
2105
client_config = configparser.SafeConfigParser(Client
2106
.client_defaults)
3143
2107
client_config.read(os.path.join(server_settings["configdir"],
3144
2108
"clients.conf"))
3145
2109
3146
2110
global mandos_dbus_service
3147
2111
mandos_dbus_service = None
3148
3149
socketfd = None
3150
if server_settings["socket"] != "":
3151
socketfd = server_settings["socket"]
3152
tcp_server = MandosServer(
3153
(server_settings["address"], server_settings["port"]),
3154
ClientHandler,
3155
interface=(server_settings["interface"] or None),
3156
use_ipv6=use_ipv6,
3157
gnutls_priority=server_settings["priority"],
3158
use_dbus=use_dbus,
3159
socketfd=socketfd)
3160
if not foreground:
3161
pidfilename = "/run/mandos.pid"
3162
if not os.path.isdir("/run/."):
3163
pidfilename = "/var/run/mandos.pid"
3164
pidfile = None
3165
try:
3166
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3167
except IOError as e:
3168
logger.error("Could not open file %r", pidfilename,
3169
exc_info=e)
3170
3171
for name, group in (("_mandos", "_mandos"),
3172
("mandos", "mandos"),
3173
("nobody", "nogroup")):
3174
try:
3175
uid = pwd.getpwnam(name).pw_uid
3176
gid = pwd.getpwnam(group).pw_gid
3177
break
2112
2113
tcp_server = MandosServer((server_settings["address"],
2114
server_settings["port"]),
2115
ClientHandler,
2116
interface=(server_settings["interface"]
2117
or None),
2118
use_ipv6=use_ipv6,
2119
gnutls_priority=
2120
server_settings["priority"],
2121
use_dbus=use_dbus)
2122
if not debug:
2123
pidfilename = "/var/run/mandos.pid"
2124
try:
2125
pidfile = open(pidfilename, "w")
2126
except IOError:
2127
logger.error("Could not open file %r", pidfilename)
2128
2129
try:
2130
uid = pwd.getpwnam("_mandos").pw_uid
2131
gid = pwd.getpwnam("_mandos").pw_gid
2132
except KeyError:
2133
try:
2134
uid = pwd.getpwnam("mandos").pw_uid
2135
gid = pwd.getpwnam("mandos").pw_gid
3178
2136
except KeyError:
3179
continue
3180
else:
3181
uid = 65534
3182
gid = 65534
2137
try:
2138
uid = pwd.getpwnam("nobody").pw_uid
2139
gid = pwd.getpwnam("nobody").pw_gid
2140
except KeyError:
2141
uid = 65534
2142
gid = 65534
3183
2143
try:
3184
2144
os.setgid(gid)
3185
2145
os.setuid(uid)
3186
if debug:
3187
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3188
gid))
3189
2146
except OSError as error:
3190
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3191
.format(uid, gid, os.strerror(error.errno)))
3192
if error.errno != errno.EPERM:
3193
raise
3194
2147
if error[0] != errno.EPERM:
2148
raise error
2149
3195
2150
if debug:
3196
2151
# Enable all possible GnuTLS debugging
3197
2152
3198
2153
# "Use a log level over 10 to enable all debugging options."
3199
2154
# - GnuTLS manual
3200
gnutls.global_set_log_level(11)
3201
3202
@gnutls.log_func
2155
gnutls.library.functions.gnutls_global_set_log_level(11)
2156
2157
@gnutls.library.types.gnutls_log_func
3203
2158
def debug_gnutls(level, string):
3204
logger.debug("GnuTLS: %s",
3205
string[:-1].decode("utf-8",
3206
errors="replace"))
3207
3208
gnutls.global_set_log_function(debug_gnutls)
3209
2159
logger.debug("GnuTLS: %s", string[:-1])
2160
2161
(gnutls.library.functions
2162
.gnutls_global_set_log_function(debug_gnutls))
2163
3210
2164
# Redirect stdin so all checkers get /dev/null
3211
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2165
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3212
2166
os.dup2(null, sys.stdin.fileno())
3213
2167
if null > 2:
3214
2168
os.close(null)
3215
2169
3216
2170
# Need to fork before connecting to D-Bus
3217
if not foreground:
2171
if not debug:
3218
2172
# Close all input and output, do double fork, etc.
3219
2173
daemon()
3220
3221
if gi.version_info < (3, 10, 2):
3222
# multiprocessing will use threads, so before we use GLib we
3223
# need to inform GLib that threads will be used.
3224
GLib.threads_init()
3225
2174
2175
gobject.threads_init()
2176
3226
2177
global main_loop
3227
2178
# From the Avahi example code
3228
DBusGMainLoop(set_as_default=True)
3229
main_loop = GLib.MainLoop()
2179
DBusGMainLoop(set_as_default=True )
2180
main_loop = gobject.MainLoop()
3230
2181
bus = dbus.SystemBus()
3231
2182
# End of Avahi example code
3232
2183
if use_dbus:
3233
2184
try:
3234
2185
bus_name = dbus.service.BusName("se.recompile.Mandos",
3235
bus,
3236
do_not_queue=True)
3237
old_bus_name = dbus.service.BusName(
3238
"se.bsnet.fukt.Mandos", bus,
3239
do_not_queue=True)
3240
except dbus.exceptions.DBusException as e:
3241
logger.error("Disabling D-Bus:", exc_info=e)
2186
bus, do_not_queue=True)
2187
old_bus_name = (dbus.service.BusName
2188
("se.bsnet.fukt.Mandos", bus,
2189
do_not_queue=True))
2190
except dbus.exceptions.NameExistsException as e:
2191
logger.error(unicode(e) + ", disabling D-Bus")
3242
2192
use_dbus = False
3243
2193
server_settings["use_dbus"] = False
3244
2194
tcp_server.use_dbus = False
3245
if zeroconf:
3246
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3247
service = AvahiServiceToSyslog(
3248
name=server_settings["servicename"],
3249
servicetype="_mandos._tcp",
3250
protocol=protocol,
3251
bus=bus)
3252
if server_settings["interface"]:
3253
service.interface = if_nametoindex(
3254
server_settings["interface"].encode("utf-8"))
3255
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
3256
2204
global multiprocessing_manager
3257
2205
multiprocessing_manager = multiprocessing.Manager()
3258
2206
3259
2207
client_class = Client
3260
2208
if use_dbus:
3261
client_class = functools.partial(ClientDBus, bus=bus)
3262
2209
client_class = functools.partial(ClientDBusTransitional,
2210
bus = bus)
2211
3263
2212
client_settings = Client.config_parser(client_config)
3264
2213
old_client_settings = {}
3265
2214
clients_data = {}
3266
3267
# This is used to redirect stdout and stderr for checker processes
3268
global wnull
3269
wnull = open(os.devnull, "w") # A writable /dev/null
3270
# Only used if server is running in foreground but not in debug
3271
# mode
3272
if debug or not foreground:
3273
wnull.close()
3274
2215
3275
2216
# Get client data and settings from last running state.
3276
2217
if server_settings["restore"]:
3277
2218
try:
3278
2219
with open(stored_state_path, "rb") as stored_state:
3279
if sys.version_info.major == 2:
3280
clients_data, old_client_settings = pickle.load(
3281
stored_state)
3282
else:
3283
bytes_clients_data, bytes_old_client_settings = (
3284
pickle.load(stored_state, encoding="bytes"))
3285
# Fix bytes to strings
3286
# clients_data
3287
# .keys()
3288
clients_data = {(key.decode("utf-8")
3289
if isinstance(key, bytes)
3290
else key): value
3291
for key, value in
3292
bytes_clients_data.items()}
3293
del bytes_clients_data
3294
for key in clients_data:
3295
value = {(k.decode("utf-8")
3296
if isinstance(k, bytes) else k): v
3297
for k, v in
3298
clients_data[key].items()}
3299
clients_data[key] = value
3300
# .client_structure
3301
value["client_structure"] = [
3302
(s.decode("utf-8")
3303
if isinstance(s, bytes)
3304
else s) for s in
3305
value["client_structure"]]
3306
# .name, .host, and .checker_command
3307
for k in ("name", "host", "checker_command"):
3308
if isinstance(value[k], bytes):
3309
value[k] = value[k].decode("utf-8")
3310
if "key_id" not in value:
3311
value["key_id"] = ""
3312
elif "fingerprint" not in value:
3313
value["fingerprint"] = ""
3314
# old_client_settings
3315
# .keys()
3316
old_client_settings = {
3317
(key.decode("utf-8")
3318
if isinstance(key, bytes)
3319
else key): value
3320
for key, value in
3321
bytes_old_client_settings.items()}
3322
del bytes_old_client_settings
3323
# .host and .checker_command
3324
for value in old_client_settings.values():
3325
for attribute in ("host", "checker_command"):
3326
if isinstance(value[attribute], bytes):
3327
value[attribute] = (value[attribute]
3328
.decode("utf-8"))
2220
clients_data, old_client_settings = (pickle.load
2221
(stored_state))
3329
2222
os.remove(stored_state_path)
3330
2223
except IOError as e:
3331
if e.errno == errno.ENOENT:
3332
logger.warning("Could not load persistent state:"
3333
" {}".format(os.strerror(e.errno)))
3334
else:
3335
logger.critical("Could not load persistent state:",
3336
exc_info=e)
2224
logger.warning("Could not load persistent state: {0}"
2225
.format(e))
2226
if e.errno != errno.ENOENT:
3337
2227
raise
3338
2228
except EOFError as e:
3339
2229
logger.warning("Could not load persistent state: "
3340
"EOFError:",
3341
exc_info=e)
3342
2230
"EOFError: {0}".format(e))
2231
3343
2232
with PGPEngine() as pgp:
3344
for client_name, client in clients_data.items():
3345
# Skip removed clients
3346
if client_name not in client_settings:
3347
continue
3348
2233
for client_name, client in clients_data.iteritems():
3349
2234
# Decide which value to use after restoring saved state.
3350
2235
# We have three different values: Old config file,
3351
2236
# new config file, and saved state.
3356
2241
# For each value in new config, check if it
3357
2242
# differs from the old config value (Except for
3358
2243
# the "secret" attribute)
3359
if (name != "secret"
3360
and (value !=
3361
old_client_settings[client_name][name])):
2244
if (name != "secret" and
2245
value != old_client_settings[client_name]
2246
[name]):
3362
2247
client[name] = value
3363
2248
except KeyError:
3364
2249
pass
3365
2250
3366
2251
# Clients who has passed its expire date can still be
3367
# enabled if its last checker was successful. A Client
3368
# whose checker succeeded before we stored its state is
3369
# assumed to have successfully run all checkers during
3370
# downtime.
2252
# enabled if its last checker was successful. Clients
2253
# whose checker failed before we stored its state is
2254
# assumed to have failed all checkers during downtime.
3371
2255
if client["enabled"]:
3372
2256
if datetime.datetime.utcnow() >= client["expires"]:
3373
2257
if not client["last_checked_ok"]:
3374
2258
logger.warning(
3375
"disabling client {} - Client never "
3376
"performed a successful checker".format(
3377
client_name))
2259
"disabling client {0} - Client never "
2260
"performed a successfull checker"
2261
.format(client["name"]))
3378
2262
client["enabled"] = False
3379
2263
elif client["last_checker_status"] != 0:
3380
2264
logger.warning(
3381
"disabling client {} - Client last"
3382
" checker failed with error code"
3383
" {}".format(
3384
client_name,
3385
client["last_checker_status"]))
2265
"disabling client {0} - Client "
2266
"last checker failed with error code {1}"
2267
.format(client["name"],
2268
client["last_checker_status"]))
3386
2269
client["enabled"] = False
3387
2270
else:
3388
client["expires"] = (
3389
datetime.datetime.utcnow()
3390
+ client["timeout"])
2271
client["expires"] = (datetime.datetime
2272
.utcnow()
2273
+ client["timeout"])
3391
2274
logger.debug("Last checker succeeded,"
3392
" keeping {} enabled".format(
3393
client_name))
2275
" keeping {0} enabled"
2276
.format(client["name"]))
3394
2277
try:
3395
client["secret"] = pgp.decrypt(
3396
client["encrypted_secret"],
3397
client_settings[client_name]["secret"])
2278
client["secret"] = (
2279
pgp.decrypt(client["encrypted_secret"],
2280
client_settings[client_name]
2281
["secret"]))
3398
2282
except PGPError:
3399
2283
# If decryption fails, we use secret from new settings
3400
logger.debug("Failed to decrypt {} old secret".format(
3401
client_name))
3402
client["secret"] = (client_settings[client_name]
3403
["secret"])
2284
logger.debug("Failed to decrypt {0} old secret"
2285
.format(client_name))
2286
client["secret"] = (
2287
client_settings[client_name]["secret"])
3404
2288
2289
3405
2290
# Add/remove clients based on new changes made to config
3406
2291
for client_name in (set(old_client_settings)
3407
2292
- set(client_settings)):
3410
2295
- set(old_client_settings)):
3411
2296
clients_data[client_name] = client_settings[client_name]
3412
2297
3413
# Create all client objects
3414
for client_name, client in clients_data.items():
2298
# Create clients all clients
2299
for client_name, client in clients_data.iteritems():
3415
2300
tcp_server.clients[client_name] = client_class(
3416
name=client_name,
3417
settings=client,
3418
server_settings=server_settings)
3419
2301
name = client_name, settings = client)
2302
3420
2303
if not tcp_server.clients:
3421
2304
logger.warning("No clients defined")
3422
3423
if not foreground:
3424
if pidfile is not None:
3425
pid = os.getpid()
3426
try:
3427
with pidfile:
3428
print(pid, file=pidfile)
3429
except IOError:
3430
logger.error("Could not write to file %r with PID %d",
3431
pidfilename, pid)
3432
del pidfile
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
3433
2318
del pidfilename
3434
3435
for termsig in (signal.SIGHUP, signal.SIGTERM):
3436
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3437
lambda: main_loop.quit() and False)
3438
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
3439
2324
if use_dbus:
3440
3441
@alternate_dbus_interfaces(
3442
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3443
class MandosDBusService(DBusObjectWithObjectManager):
2325
class MandosDBusService(dbus.service.Object):
3444
2326
"""A D-Bus proxy object"""
3445
3446
2327
def __init__(self):
3447
2328
dbus.service.Object.__init__(self, bus, "/")
3448
3449
2329
_interface = "se.recompile.Mandos"
3450
2330
3451
2331
@dbus.service.signal(_interface, signature="o")
3452
2332
def ClientAdded(self, objpath):
3453
2333
"D-Bus signal"
3454
2334
pass
3455
2335
3456
2336
@dbus.service.signal(_interface, signature="ss")
3457
def ClientNotFound(self, key_id, address):
2337
def ClientNotFound(self, fingerprint, address):
3458
2338
"D-Bus signal"
3459
2339
pass
3460
3461
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3462
"true"})
2340
3463
2341
@dbus.service.signal(_interface, signature="os")
3464
2342
def ClientRemoved(self, objpath, name):
3465
2343
"D-Bus signal"
3466
2344
pass
3467
3468
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3469
"true"})
2345
3470
2346
@dbus.service.method(_interface, out_signature="ao")
3471
2347
def GetAllClients(self):
3472
2348
"D-Bus method"
3473
return dbus.Array(c.dbus_object_path for c in
3474
tcp_server.clients.values())
3475
3476
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3477
"true"})
2349
return dbus.Array(c.dbus_object_path
2350
for c in
2351
tcp_server.clients.itervalues())
2352
3478
2353
@dbus.service.method(_interface,
3479
2354
out_signature="a{oa{sv}}")
3480
2355
def GetAllClientsWithProperties(self):
3481
2356
"D-Bus method"
3482
2357
return dbus.Dictionary(
3483
{c.dbus_object_path: c.GetAll(
3484
"se.recompile.Mandos.Client")
3485
for c in tcp_server.clients.values()},
2358
((c.dbus_object_path, c.GetAll(""))
2359
for c in tcp_server.clients.itervalues()),
3486
2360
signature="oa{sv}")
3487
2361
3488
2362
@dbus.service.method(_interface, in_signature="o")
3489
2363
def RemoveClient(self, object_path):
3490
2364
"D-Bus method"
3491
for c in tcp_server.clients.values():
2365
for c in tcp_server.clients.itervalues():
3492
2366
if c.dbus_object_path == object_path:
3493
2367
del tcp_server.clients[c.name]
3494
2368
c.remove_from_connection()
3495
# Don't signal the disabling
2369
# Don't signal anything except ClientRemoved
3496
2370
c.disable(quiet=True)
3497
# Emit D-Bus signal for removal
3498
self.client_removed_signal(c)
2371
# Emit D-Bus signal
2372
self.ClientRemoved(object_path, c.name)
3499
2373
return
3500
2374
raise KeyError(object_path)
3501
2375
3502
2376
del _interface
3503
3504
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3505
out_signature="a{oa{sa{sv}}}")
3506
def GetManagedObjects(self):
3507
"""D-Bus method"""
3508
return dbus.Dictionary(
3509
{client.dbus_object_path:
3510
dbus.Dictionary(
3511
{interface: client.GetAll(interface)
3512
for interface in
3513
client._get_all_interface_names()})
3514
for client in tcp_server.clients.values()})
3515
3516
def client_added_signal(self, client):
3517
"""Send the new standard signal and the old signal"""
3518
if use_dbus:
3519
# New standard signal
3520
self.InterfacesAdded(
3521
client.dbus_object_path,
3522
dbus.Dictionary(
3523
{interface: client.GetAll(interface)
3524
for interface in
3525
client._get_all_interface_names()}))
3526
# Old signal
3527
self.ClientAdded(client.dbus_object_path)
3528
3529
def client_removed_signal(self, client):
3530
"""Send the new standard signal and the old signal"""
3531
if use_dbus:
3532
# New standard signal
3533
self.InterfacesRemoved(
3534
client.dbus_object_path,
3535
client._get_all_interface_names())
3536
# Old signal
3537
self.ClientRemoved(client.dbus_object_path,
3538
client.name)
3539
3540
mandos_dbus_service = MandosDBusService()
3541
3542
# Save modules to variables to exempt the modules from being
3543
# unloaded before the function registered with atexit() is run.
3544
mp = multiprocessing
3545
wn = wnull
3546
2377
2378
class MandosDBusServiceTransitional(MandosDBusService):
2379
__metaclass__ = AlternateDBusNamesMetaclass
2380
mandos_dbus_service = MandosDBusServiceTransitional()
2381
3547
2382
def cleanup():
3548
2383
"Cleanup function; run on exit"
3549
if zeroconf:
3550
service.cleanup()
3551
3552
mp.active_children()
3553
wn.close()
2384
service.cleanup()
2385
2386
multiprocessing.active_children()
3554
2387
if not (tcp_server.clients or client_settings):
3555
2388
return
3556
2389
3557
2390
# Store client before exiting. Secrets are encrypted with key
3558
2391
# based on what config file has. If config file is
3559
2392
# removed/edited, old secret will thus be unrecovable.
3560
2393
clients = {}
3561
2394
with PGPEngine() as pgp:
3562
for client in tcp_server.clients.values():
2395
for client in tcp_server.clients.itervalues():
3563
2396
key = client_settings[client.name]["secret"]
3564
2397
client.encrypted_secret = pgp.encrypt(client.secret,
3565
2398
key)
3566
2399
client_dict = {}
3567
2400
3568
2401
# A list of attributes that can not be pickled
3569
2402
# + secret.
3570
exclude = {"bus", "changedstate", "secret",
3571
"checker", "server_settings"}
3572
for name, typ in inspect.getmembers(dbus.service
3573
.Object):
2403
exclude = set(("bus", "changedstate", "secret",
2404
"checker"))
2405
for name, typ in (inspect.getmembers
2406
(dbus.service.Object)):
3574
2407
exclude.add(name)
3575
2408
3576
2409
client_dict["encrypted_secret"] = (client
3577
2410
.encrypted_secret)
3578
2411
for attr in client.client_structure:
3579
2412
if attr not in exclude:
3580
2413
client_dict[attr] = getattr(client, attr)
3581
2414
3582
2415
clients[client.name] = client_dict
3583
2416
del client_settings[client.name]["secret"]
3584
2417
3585
2418
try:
3586
with tempfile.NamedTemporaryFile(
3587
mode='wb',
3588
suffix=".pickle",
3589
prefix='clients-',
3590
dir=os.path.dirname(stored_state_path),
3591
delete=False) as stored_state:
3592
pickle.dump((clients, client_settings), stored_state,
3593
protocol=2)
3594
tempname = stored_state.name
2419
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2420
prefix="clients-",
2421
dir=os.path.dirname
2422
(stored_state_path))
2423
with os.fdopen(tempfd, "wb") as stored_state:
2424
pickle.dump((clients, client_settings), stored_state)
3595
2425
os.rename(tempname, stored_state_path)
3596
2426
except (IOError, OSError) as e:
2427
logger.warning("Could not save persistent state: {0}"
2428
.format(e))
3597
2429
if not debug:
3598
2430
try:
3599
2431
os.remove(tempname)
3600
2432
except NameError:
3601
2433
pass
3602
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3603
logger.warning("Could not save persistent state: {}"
3604
.format(os.strerror(e.errno)))
3605
else:
3606
logger.warning("Could not save persistent state:",
3607
exc_info=e)
3608
raise
3609
2434
if e.errno not in set((errno.ENOENT, errno.EACCES,
2435
errno.EEXIST)):
2436
raise e
2437
3610
2438
# Delete all clients, and settings from config
3611
2439
while tcp_server.clients:
3612
2440
name, client = tcp_server.clients.popitem()
3613
2441
if use_dbus:
3614
2442
client.remove_from_connection()
3615
# Don't signal the disabling
2443
# Don't signal anything except ClientRemoved
3616
2444
client.disable(quiet=True)
3617
# Emit D-Bus signal for removal
3618
2445
if use_dbus:
3619
mandos_dbus_service.client_removed_signal(client)
2446
# Emit D-Bus signal
2447
mandos_dbus_service.ClientRemoved(client
2448
.dbus_object_path,
2449
client.name)
3620
2450
client_settings.clear()
3621
2451
3622
2452
atexit.register(cleanup)
3623
3624
for client in tcp_server.clients.values():
2453
2454
for client in tcp_server.clients.itervalues():
3625
2455
if use_dbus:
3626
# Emit D-Bus signal for adding
3627
mandos_dbus_service.client_added_signal(client)
2456
# Emit D-Bus signal
2457
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3628
2458
# Need to initiate checking of clients
3629
2459
if client.enabled:
3630
2460
client.init_checker()
3631
2461
3632
2462
tcp_server.enable()
3633
2463
tcp_server.server_activate()
3634
2464
3635
2465
# Find out what port we got
3636
if zeroconf:
3637
service.port = tcp_server.socket.getsockname()[1]
2466
service.port = tcp_server.socket.getsockname()[1]
3638
2467
if use_ipv6:
3639
2468
logger.info("Now listening on address %r, port %d,"
3640
" flowinfo %d, scope_id %d",
3641
*tcp_server.socket.getsockname())
2469
" flowinfo %d, scope_id %d"
2470
% tcp_server.socket.getsockname())
3642
2471
else: # IPv4
3643
logger.info("Now listening on address %r, port %d",
3644
*tcp_server.socket.getsockname())
3645
3646
# service.interface = tcp_server.socket.getsockname()[3]
3647
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
3648
2477
try:
3649
if zeroconf:
3650
# From the Avahi example code
3651
try:
3652
service.activate()
3653
except dbus.exceptions.DBusException as error:
3654
logger.critical("D-Bus Exception", exc_info=error)
3655
cleanup()
3656
sys.exit(1)
3657
# End of Avahi example code
3658
3659
GLib.io_add_watch(
3660
GLib.IOChannel.unix_new(tcp_server.fileno()),
3661
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3662
lambda *args, **kwargs: (tcp_server.handle_request
3663
(*args[2:], **kwargs) or True))
3664
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
3665
2492
logger.debug("Starting main loop")
3666
2493
main_loop.run()
3667
2494
except AvahiError as error:
3668
logger.critical("Avahi Error", exc_info=error)
2495
logger.critical("AvahiError: %s", error)
3669
2496
cleanup()
3670
2497
sys.exit(1)
3671
2498
except KeyboardInterrupt:
3676
2503
# Must run before the D-Bus bus name gets deregistered
3677
2504
cleanup()
3678
2505
3679
3680
def should_only_run_tests():
3681
parser = argparse.ArgumentParser(add_help=False)
3682
parser.add_argument("--check", action='store_true')
3683
args, unknown_args = parser.parse_known_args()
3684
run_tests = args.check
3685
if run_tests:
3686
# Remove --check argument from sys.argv
3687
sys.argv[1:] = unknown_args
3688
return run_tests
3689
3690
# Add all tests from doctest strings
3691
def load_tests(loader, tests, none):
3692
import doctest
3693
tests.addTests(doctest.DocTestSuite())
3694
return tests
3695
3696
2506
if __name__ == '__main__':
3697
try:
3698
if should_only_run_tests():
3699
# Call using ./mandos --check [--verbose]
3700
unittest.main()
3701
else:
3702
main()
3703
finally:
3704
logging.shutdown()
2507
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0