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- Committer: teddy at recompile
- Date: 2011-12-27 14:15:40 UTC
- mto: (237.7.109 trunk) (299.1.1 release) (300.1.1 release) (301.1.1 release)
- mto: This revision was merged to the branch mainline in revision 290.
- Revision ID: teddy@recompile.se-20111227141540-ajrabf33q59jfa7t
Reorder TODO entries
- 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 © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
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 = "1.8.11"
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
235
147
def __enter__(self):
236
148
return self
237
238
def __exit__(self, exc_type, exc_value, traceback):
149
150
def __exit__ (self, exc_type, exc_value, traceback):
239
151
self._cleanup()
240
152
return False
241
153
242
154
def __del__(self):
243
155
self._cleanup()
244
156
245
157
def _cleanup(self):
246
158
if self.tempdir is not None:
247
159
# Delete contents of tempdir
248
160
for root, dirs, files in os.walk(self.tempdir,
249
topdown=False):
161
topdown = False):
250
162
for filename in files:
251
163
os.remove(os.path.join(root, filename))
252
164
for dirname in dirs:
254
166
# Remove tempdir
255
167
os.rmdir(self.tempdir)
256
168
self.tempdir = None
257
169
258
170
def password_encode(self, password):
259
171
# Passphrase can not be empty and can not contain newlines or
260
172
# 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
173
return b"mandos" + binascii.hexlify(password)
174
269
175
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)
176
self.gnupg.passphrase = self.password_encode(password)
177
with open(os.devnull) as devnull:
178
try:
179
proc = self.gnupg.run(['--symmetric'],
180
create_fhs=['stdin', 'stdout'],
181
attach_fhs={'stderr': devnull})
182
with contextlib.closing(proc.handles['stdin']) as f:
183
f.write(data)
184
with contextlib.closing(proc.handles['stdout']) as f:
185
ciphertext = f.read()
186
proc.wait()
187
except IOError as e:
188
raise PGPError(e)
189
self.gnupg.passphrase = None
285
190
return ciphertext
286
191
287
192
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)
193
self.gnupg.passphrase = self.password_encode(password)
194
with open(os.devnull) as devnull:
195
try:
196
proc = self.gnupg.run(['--decrypt'],
197
create_fhs=['stdin', 'stdout'],
198
attach_fhs={'stderr': devnull})
199
with contextlib.closing(proc.handles['stdin'] ) as f:
200
f.write(data)
201
with contextlib.closing(proc.handles['stdout']) as f:
202
decrypted_plaintext = f.read()
203
proc.wait()
204
except IOError as e:
205
raise PGPError(e)
206
self.gnupg.passphrase = None
303
207
return decrypted_plaintext
304
208
305
209
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
210
332
211
class AvahiError(Exception):
333
212
def __init__(self, value, *args, **kwargs):
334
213
self.value = value
335
return super(AvahiError, self).__init__(value, *args,
336
**kwargs)
337
214
super(AvahiError, self).__init__(value, *args, **kwargs)
215
def __unicode__(self):
216
return unicode(repr(self.value))
338
217
339
218
class AvahiServiceError(AvahiError):
340
219
pass
341
220
342
343
221
class AvahiGroupError(AvahiError):
344
222
pass
345
223
346
224
347
class AvahiService:
225
class AvahiService(object):
348
226
"""An Avahi (Zeroconf) service.
349
227
350
228
Attributes:
351
229
interface: integer; avahi.IF_UNSPEC or an interface index.
352
230
Used to optionally bind to the specified interface.
353
231
name: string; Example: 'Mandos'
354
232
type: string; Example: '_mandos._tcp'.
355
See <https://www.iana.org/assignments/service-names-port-numbers>
233
See <http://www.dns-sd.org/ServiceTypes.html>
356
234
port: integer; what port to announce
357
235
TXT: list of strings; TXT record for the service
358
236
domain: string; Domain to publish on, default to .local if empty.
364
242
server: D-Bus Server
365
243
bus: dbus.SystemBus()
366
244
"""
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):
245
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
246
servicetype = None, port = None, TXT = None,
247
domain = "", host = "", max_renames = 32768,
248
protocol = avahi.PROTO_UNSPEC, bus = None):
379
249
self.interface = interface
380
250
self.name = name
381
251
self.type = servicetype
390
260
self.server = None
391
261
self.bus = bus
392
262
self.entry_group_state_changed_match = None
393
394
def rename(self, remove=True):
263
def rename(self):
395
264
"""Derived from the Avahi example code"""
396
265
if self.rename_count >= self.max_renames:
397
266
logger.critical("No suitable Zeroconf service name found"
398
267
" after %i retries, exiting.",
399
268
self.rename_count)
400
269
raise AvahiServiceError("Too many renames")
401
self.name = str(
402
self.server.GetAlternativeServiceName(self.name))
403
self.rename_count += 1
270
self.name = unicode(self.server
271
.GetAlternativeServiceName(self.name))
404
272
logger.info("Changing Zeroconf service name to %r ...",
405
273
self.name)
406
if remove:
407
self.remove()
274
self.remove()
408
275
try:
409
276
self.add()
410
277
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
278
logger.critical("DBusException: %s", error)
279
self.cleanup()
280
os._exit(1)
281
self.rename_count += 1
420
282
def remove(self):
421
283
"""Derived from the Avahi example code"""
422
284
if self.entry_group_state_changed_match is not None:
424
286
self.entry_group_state_changed_match = None
425
287
if self.group is not None:
426
288
self.group.Reset()
427
428
289
def add(self):
429
290
"""Derived from the Avahi example code"""
430
291
self.remove()
447
308
dbus.UInt16(self.port),
448
309
avahi.string_array_to_txt_array(self.TXT))
449
310
self.group.Commit()
450
451
311
def entry_group_state_changed(self, state, error):
452
312
"""Derived from the Avahi example code"""
453
313
logger.debug("Avahi entry group state change: %i", state)
454
314
455
315
if state == avahi.ENTRY_GROUP_ESTABLISHED:
456
316
logger.debug("Zeroconf service established.")
457
317
elif state == avahi.ENTRY_GROUP_COLLISION:
459
319
self.rename()
460
320
elif state == avahi.ENTRY_GROUP_FAILURE:
461
321
logger.critical("Avahi: Error in group state changed %s",
462
str(error))
463
raise AvahiGroupError("State changed: {!s}".format(error))
464
322
unicode(error))
323
raise AvahiGroupError("State changed: %s"
324
% unicode(error))
465
325
def cleanup(self):
466
326
"""Derived from the Avahi example code"""
467
327
if self.group is not None:
472
332
pass
473
333
self.group = None
474
334
self.remove()
475
476
335
def server_state_changed(self, state, error=None):
477
336
"""Derived from the Avahi example code"""
478
337
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
}
338
bad_states = { avahi.SERVER_INVALID:
339
"Zeroconf server invalid",
340
avahi.SERVER_REGISTERING: None,
341
avahi.SERVER_COLLISION:
342
"Zeroconf server name collision",
343
avahi.SERVER_FAILURE:
344
"Zeroconf server failure" }
485
345
if state in bad_states:
486
346
if bad_states[state] is not None:
487
347
if error is None:
490
350
logger.error(bad_states[state] + ": %r", error)
491
351
self.cleanup()
492
352
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)
353
self.add()
505
354
else:
506
355
if error is None:
507
356
logger.debug("Unknown state: %r", state)
508
357
else:
509
358
logger.debug("Unknown state: %r: %r", state, error)
510
511
359
def activate(self):
512
360
"""Derived from the Avahi example code"""
513
361
if self.server is None:
517
365
follow_name_owner_changes=True),
518
366
avahi.DBUS_INTERFACE_SERVER)
519
367
self.server.connect_to_signal("StateChanged",
520
self.server_state_changed)
368
self.server_state_changed)
521
369
self.server_state_changed(self.server.GetState())
522
370
523
524
371
class AvahiServiceToSyslog(AvahiService):
525
def rename(self, *args, **kwargs):
372
def rename(self):
526
373
"""Add the new name to the syslog messages"""
527
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
528
syslogger.setFormatter(logging.Formatter(
529
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
530
.format(self.name)))
374
ret = AvahiService.rename(self)
375
syslogger.setFormatter(logging.Formatter
376
('Mandos (%s) [%%(process)d]:'
377
' %%(levelname)s: %%(message)s'
378
% self.name))
531
379
return ret
532
380
533
534
# Pretend that we have a GnuTLS module
535
class gnutls:
536
"""This isn't so much a class as it is a module-like namespace."""
537
538
library = ctypes.util.find_library("gnutls")
539
if library is None:
540
library = ctypes.util.find_library("gnutls-deb0")
541
_library = ctypes.cdll.LoadLibrary(library)
542
del library
543
544
# Unless otherwise indicated, the constants and types below are
545
# all from the gnutls/gnutls.h C header file.
546
547
# Constants
548
E_SUCCESS = 0
549
E_INTERRUPTED = -52
550
E_AGAIN = -28
551
CRT_OPENPGP = 2
552
CRT_RAWPK = 3
553
CLIENT = 2
554
SHUT_RDWR = 0
555
CRD_CERTIFICATE = 1
556
E_NO_CERTIFICATE_FOUND = -49
557
X509_FMT_DER = 0
558
NO_TICKETS = 1<<10
559
ENABLE_RAWPK = 1<<18
560
CTYPE_PEERS = 3
561
KEYID_USE_SHA256 = 1 # gnutls/x509.h
562
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
563
564
# Types
565
class session_int(ctypes.Structure):
566
_fields_ = []
567
session_t = ctypes.POINTER(session_int)
568
569
class certificate_credentials_st(ctypes.Structure):
570
_fields_ = []
571
certificate_credentials_t = ctypes.POINTER(
572
certificate_credentials_st)
573
certificate_type_t = ctypes.c_int
574
575
class datum_t(ctypes.Structure):
576
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
577
('size', ctypes.c_uint)]
578
579
class openpgp_crt_int(ctypes.Structure):
580
_fields_ = []
581
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
582
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
583
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
584
credentials_type_t = ctypes.c_int
585
transport_ptr_t = ctypes.c_void_p
586
close_request_t = ctypes.c_int
587
588
# Exceptions
589
class Error(Exception):
590
def __init__(self, message=None, code=None, args=()):
591
# Default usage is by a message string, but if a return
592
# code is passed, convert it to a string with
593
# gnutls.strerror()
594
self.code = code
595
if message is None and code is not None:
596
message = gnutls.strerror(code)
597
return super(gnutls.Error, self).__init__(
598
message, *args)
599
600
class CertificateSecurityError(Error):
601
pass
602
603
# Classes
604
class Credentials:
605
def __init__(self):
606
self._c_object = gnutls.certificate_credentials_t()
607
gnutls.certificate_allocate_credentials(
608
ctypes.byref(self._c_object))
609
self.type = gnutls.CRD_CERTIFICATE
610
611
def __del__(self):
612
gnutls.certificate_free_credentials(self._c_object)
613
614
class ClientSession:
615
def __init__(self, socket, credentials=None):
616
self._c_object = gnutls.session_t()
617
gnutls_flags = gnutls.CLIENT
618
if gnutls.check_version(b"3.5.6"):
619
gnutls_flags |= gnutls.NO_TICKETS
620
if gnutls.has_rawpk:
621
gnutls_flags |= gnutls.ENABLE_RAWPK
622
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
623
del gnutls_flags
624
gnutls.set_default_priority(self._c_object)
625
gnutls.transport_set_ptr(self._c_object, socket.fileno())
626
gnutls.handshake_set_private_extensions(self._c_object,
627
True)
628
self.socket = socket
629
if credentials is None:
630
credentials = gnutls.Credentials()
631
gnutls.credentials_set(self._c_object, credentials.type,
632
ctypes.cast(credentials._c_object,
633
ctypes.c_void_p))
634
self.credentials = credentials
635
636
def __del__(self):
637
gnutls.deinit(self._c_object)
638
639
def handshake(self):
640
return gnutls.handshake(self._c_object)
641
642
def send(self, data):
643
data = bytes(data)
644
data_len = len(data)
645
while data_len > 0:
646
data_len -= gnutls.record_send(self._c_object,
647
data[-data_len:],
648
data_len)
649
650
def bye(self):
651
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
652
653
# Error handling functions
654
def _error_code(result):
655
"""A function to raise exceptions on errors, suitable
656
for the 'restype' attribute on ctypes functions"""
657
if result >= 0:
658
return result
659
if result == gnutls.E_NO_CERTIFICATE_FOUND:
660
raise gnutls.CertificateSecurityError(code=result)
661
raise gnutls.Error(code=result)
662
663
def _retry_on_error(result, func, arguments):
664
"""A function to retry on some errors, suitable
665
for the 'errcheck' attribute on ctypes functions"""
666
while result < 0:
667
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
668
return _error_code(result)
669
result = func(*arguments)
670
return result
671
672
# Unless otherwise indicated, the function declarations below are
673
# all from the gnutls/gnutls.h C header file.
674
675
# Functions
676
priority_set_direct = _library.gnutls_priority_set_direct
677
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
678
ctypes.POINTER(ctypes.c_char_p)]
679
priority_set_direct.restype = _error_code
680
681
init = _library.gnutls_init
682
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
683
init.restype = _error_code
684
685
set_default_priority = _library.gnutls_set_default_priority
686
set_default_priority.argtypes = [session_t]
687
set_default_priority.restype = _error_code
688
689
record_send = _library.gnutls_record_send
690
record_send.argtypes = [session_t, ctypes.c_void_p,
691
ctypes.c_size_t]
692
record_send.restype = ctypes.c_ssize_t
693
record_send.errcheck = _retry_on_error
694
695
certificate_allocate_credentials = (
696
_library.gnutls_certificate_allocate_credentials)
697
certificate_allocate_credentials.argtypes = [
698
ctypes.POINTER(certificate_credentials_t)]
699
certificate_allocate_credentials.restype = _error_code
700
701
certificate_free_credentials = (
702
_library.gnutls_certificate_free_credentials)
703
certificate_free_credentials.argtypes = [
704
certificate_credentials_t]
705
certificate_free_credentials.restype = None
706
707
handshake_set_private_extensions = (
708
_library.gnutls_handshake_set_private_extensions)
709
handshake_set_private_extensions.argtypes = [session_t,
710
ctypes.c_int]
711
handshake_set_private_extensions.restype = None
712
713
credentials_set = _library.gnutls_credentials_set
714
credentials_set.argtypes = [session_t, credentials_type_t,
715
ctypes.c_void_p]
716
credentials_set.restype = _error_code
717
718
strerror = _library.gnutls_strerror
719
strerror.argtypes = [ctypes.c_int]
720
strerror.restype = ctypes.c_char_p
721
722
certificate_type_get = _library.gnutls_certificate_type_get
723
certificate_type_get.argtypes = [session_t]
724
certificate_type_get.restype = _error_code
725
726
certificate_get_peers = _library.gnutls_certificate_get_peers
727
certificate_get_peers.argtypes = [session_t,
728
ctypes.POINTER(ctypes.c_uint)]
729
certificate_get_peers.restype = ctypes.POINTER(datum_t)
730
731
global_set_log_level = _library.gnutls_global_set_log_level
732
global_set_log_level.argtypes = [ctypes.c_int]
733
global_set_log_level.restype = None
734
735
global_set_log_function = _library.gnutls_global_set_log_function
736
global_set_log_function.argtypes = [log_func]
737
global_set_log_function.restype = None
738
739
deinit = _library.gnutls_deinit
740
deinit.argtypes = [session_t]
741
deinit.restype = None
742
743
handshake = _library.gnutls_handshake
744
handshake.argtypes = [session_t]
745
handshake.restype = _error_code
746
handshake.errcheck = _retry_on_error
747
748
transport_set_ptr = _library.gnutls_transport_set_ptr
749
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
750
transport_set_ptr.restype = None
751
752
bye = _library.gnutls_bye
753
bye.argtypes = [session_t, close_request_t]
754
bye.restype = _error_code
755
bye.errcheck = _retry_on_error
756
757
check_version = _library.gnutls_check_version
758
check_version.argtypes = [ctypes.c_char_p]
759
check_version.restype = ctypes.c_char_p
760
761
_need_version = b"3.3.0"
762
if check_version(_need_version) is None:
763
raise self.Error("Needs GnuTLS {} or later"
764
.format(_need_version))
765
766
_tls_rawpk_version = b"3.6.6"
767
has_rawpk = bool(check_version(_tls_rawpk_version))
768
769
if has_rawpk:
770
# Types
771
class pubkey_st(ctypes.Structure):
772
_fields = []
773
pubkey_t = ctypes.POINTER(pubkey_st)
774
775
x509_crt_fmt_t = ctypes.c_int
776
777
# All the function declarations below are from gnutls/abstract.h
778
pubkey_init = _library.gnutls_pubkey_init
779
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
780
pubkey_init.restype = _error_code
781
782
pubkey_import = _library.gnutls_pubkey_import
783
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
784
x509_crt_fmt_t]
785
pubkey_import.restype = _error_code
786
787
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
788
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
789
ctypes.POINTER(ctypes.c_ubyte),
790
ctypes.POINTER(ctypes.c_size_t)]
791
pubkey_get_key_id.restype = _error_code
792
793
pubkey_deinit = _library.gnutls_pubkey_deinit
794
pubkey_deinit.argtypes = [pubkey_t]
795
pubkey_deinit.restype = None
796
else:
797
# All the function declarations below are from gnutls/openpgp.h
798
799
openpgp_crt_init = _library.gnutls_openpgp_crt_init
800
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
801
openpgp_crt_init.restype = _error_code
802
803
openpgp_crt_import = _library.gnutls_openpgp_crt_import
804
openpgp_crt_import.argtypes = [openpgp_crt_t,
805
ctypes.POINTER(datum_t),
806
openpgp_crt_fmt_t]
807
openpgp_crt_import.restype = _error_code
808
809
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
810
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
811
ctypes.POINTER(ctypes.c_uint)]
812
openpgp_crt_verify_self.restype = _error_code
813
814
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
815
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
816
openpgp_crt_deinit.restype = None
817
818
openpgp_crt_get_fingerprint = (
819
_library.gnutls_openpgp_crt_get_fingerprint)
820
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
821
ctypes.c_void_p,
822
ctypes.POINTER(
823
ctypes.c_size_t)]
824
openpgp_crt_get_fingerprint.restype = _error_code
825
826
if check_version(b"3.6.4"):
827
certificate_type_get2 = _library.gnutls_certificate_type_get2
828
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
829
certificate_type_get2.restype = _error_code
830
831
# Remove non-public functions
832
del _error_code, _retry_on_error
833
834
835
def call_pipe(connection, # : multiprocessing.Connection
836
func, *args, **kwargs):
837
"""This function is meant to be called by multiprocessing.Process
838
839
This function runs func(*args, **kwargs), and writes the resulting
840
return value on the provided multiprocessing.Connection.
841
"""
842
connection.send(func(*args, **kwargs))
843
connection.close()
844
845
846
class Client:
381
def timedelta_to_milliseconds(td):
382
"Convert a datetime.timedelta() to milliseconds"
383
return ((td.days * 24 * 60 * 60 * 1000)
384
+ (td.seconds * 1000)
385
+ (td.microseconds // 1000))
386
387
class Client(object):
847
388
"""A representation of a client host served by this server.
848
389
849
390
Attributes:
850
391
approved: bool(); 'None' if not yet approved/disapproved
851
392
approval_delay: datetime.timedelta(); Time to wait for approval
852
393
approval_duration: datetime.timedelta(); Duration of one approval
853
checker: multiprocessing.Process(); a running checker process used
854
to see if the client lives. 'None' if no process is
855
running.
856
checker_callback_tag: a GLib event source tag, or None
394
checker: subprocess.Popen(); a running checker process used
395
to see if the client lives.
396
'None' if no process is running.
397
checker_callback_tag: a gobject event source tag, or None
857
398
checker_command: string; External command which is run to check
858
399
if client lives. %() expansions are done at
859
400
runtime with vars(self) as dict, so that for
860
401
instance %(name)s can be used in the command.
861
checker_initiator_tag: a GLib event source tag, or None
402
checker_initiator_tag: a gobject event source tag, or None
862
403
created: datetime.datetime(); (UTC) object creation
863
404
client_structure: Object describing what attributes a client has
864
405
and is used for storing the client at exit
865
406
current_checker_command: string; current running checker_command
866
disable_initiator_tag: a GLib event source tag, or None
407
disable_initiator_tag: a gobject event source tag, or None
867
408
enabled: bool()
868
409
fingerprint: string (40 or 32 hexadecimal digits); used to
869
uniquely identify an OpenPGP client
870
key_id: string (64 hexadecimal digits); used to uniquely identify
871
a client using raw public keys
410
uniquely identify the client
872
411
host: string; available for use by the checker command
873
412
interval: datetime.timedelta(); How often to start a new checker
874
413
last_approval_request: datetime.datetime(); (UTC) or None
875
414
last_checked_ok: datetime.datetime(); (UTC) or None
876
415
last_checker_status: integer between 0 and 255 reflecting exit
877
416
status of last checker. -1 reflects crashed
878
checker, -2 means no checker completed yet.
879
last_checker_signal: The signal which killed the last checker, if
880
last_checker_status is -1
417
checker, or None.
881
418
last_enabled: datetime.datetime(); (UTC) or None
882
419
name: string; from the config file, used in log messages and
883
420
D-Bus identifiers
884
421
secret: bytestring; sent verbatim (over TLS) to client
885
422
timeout: datetime.timedelta(); How long from last_checked_ok
886
423
until this client is disabled
887
extended_timeout: extra long timeout when secret has been sent
424
extended_timeout: extra long timeout when password has been sent
888
425
runtime_expansions: Allowed attributes for runtime expansion.
889
426
expires: datetime.datetime(); time (UTC) when a client will be
890
427
disabled, or None
891
server_settings: The server_settings dict from main()
892
428
"""
893
429
894
430
runtime_expansions = ("approval_delay", "approval_duration",
895
"created", "enabled", "expires", "key_id",
896
"fingerprint", "host", "interval",
897
"last_approval_request", "last_checked_ok",
431
"created", "enabled", "fingerprint",
432
"host", "interval", "last_checked_ok",
898
433
"last_enabled", "name", "timeout")
899
client_defaults = {
900
"timeout": "PT5M",
901
"extended_timeout": "PT15M",
902
"interval": "PT2M",
903
"checker": "fping -q -- %%(host)s",
904
"host": "",
905
"approval_delay": "PT0S",
906
"approval_duration": "PT1S",
907
"approved_by_default": "True",
908
"enabled": "True",
909
}
434
client_defaults = { "timeout": "5m",
435
"extended_timeout": "15m",
436
"interval": "2m",
437
"checker": "fping -q -- %%(host)s",
438
"host": "",
439
"approval_delay": "0s",
440
"approval_duration": "1s",
441
"approved_by_default": "True",
442
"enabled": "True",
443
}
444
445
def timeout_milliseconds(self):
446
"Return the 'timeout' attribute in milliseconds"
447
return timedelta_to_milliseconds(self.timeout)
448
449
def extended_timeout_milliseconds(self):
450
"Return the 'extended_timeout' attribute in milliseconds"
451
return timedelta_to_milliseconds(self.extended_timeout)
452
453
def interval_milliseconds(self):
454
"Return the 'interval' attribute in milliseconds"
455
return timedelta_to_milliseconds(self.interval)
456
457
def approval_delay_milliseconds(self):
458
return timedelta_to_milliseconds(self.approval_delay)
910
459
911
460
@staticmethod
912
461
def config_parser(config):
913
"""Construct a new dict of client settings of this form:
462
""" Construct a new dict of client settings of this form:
914
463
{ client_name: {setting_name: value, ...}, ...}
915
with exceptions for any special settings as defined above.
916
NOTE: Must be a pure function. Must return the same result
917
value given the same arguments.
918
"""
464
with exceptions for any special settings as defined above"""
919
465
settings = {}
920
466
for client_name in config.sections():
921
467
section = dict(config.items(client_name))
922
468
client = settings[client_name] = {}
923
469
924
470
client["host"] = section["host"]
925
471
# Reformat values from string types to Python types
926
472
client["approved_by_default"] = config.getboolean(
927
473
client_name, "approved_by_default")
928
client["enabled"] = config.getboolean(client_name,
929
"enabled")
930
931
# Uppercase and remove spaces from key_id and fingerprint
932
# for later comparison purposes with return value from the
933
# key_id() and fingerprint() functions
934
client["key_id"] = (section.get("key_id", "").upper()
935
.replace(" ", ""))
474
client["enabled"] = config.getboolean(client_name, "enabled")
475
936
476
client["fingerprint"] = (section["fingerprint"].upper()
937
477
.replace(" ", ""))
938
478
if "secret" in section:
939
client["secret"] = codecs.decode(section["secret"]
940
.encode("utf-8"),
941
"base64")
479
client["secret"] = section["secret"].decode("base64")
942
480
elif "secfile" in section:
943
481
with open(os.path.expanduser(os.path.expandvars
944
482
(section["secfile"])),
945
483
"rb") as secfile:
946
484
client["secret"] = secfile.read()
947
485
else:
948
raise TypeError("No secret or secfile for section {}"
949
.format(section))
486
raise TypeError("No secret or secfile for section %s"
487
% section)
950
488
client["timeout"] = string_to_delta(section["timeout"])
951
489
client["extended_timeout"] = string_to_delta(
952
490
section["extended_timeout"])
958
496
client["checker_command"] = section["checker"]
959
497
client["last_approval_request"] = None
960
498
client["last_checked_ok"] = None
961
client["last_checker_status"] = -2
499
client["last_checker_status"] = None
500
if client["enabled"]:
501
client["last_enabled"] = datetime.datetime.utcnow()
502
client["expires"] = (datetime.datetime.utcnow()
503
+ client["timeout"])
504
else:
505
client["last_enabled"] = None
506
client["expires"] = None
962
507
963
508
return settings
964
965
def __init__(self, settings, name=None, server_settings=None):
509
510
511
def __init__(self, settings, name = None):
512
"""Note: the 'checker' key in 'config' sets the
513
'checker_command' attribute and *not* the 'checker'
514
attribute."""
966
515
self.name = name
967
if server_settings is None:
968
server_settings = {}
969
self.server_settings = server_settings
970
516
# adding all client settings
971
for setting, value in settings.items():
517
for setting, value in settings.iteritems():
972
518
setattr(self, setting, value)
973
974
if self.enabled:
975
if not hasattr(self, "last_enabled"):
976
self.last_enabled = datetime.datetime.utcnow()
977
if not hasattr(self, "expires"):
978
self.expires = (datetime.datetime.utcnow()
979
+ self.timeout)
980
else:
981
self.last_enabled = None
982
self.expires = None
983
519
984
520
logger.debug("Creating client %r", self.name)
985
logger.debug(" Key ID: %s", self.key_id)
521
# Uppercase and remove spaces from fingerprint for later
522
# comparison purposes with return value from the fingerprint()
523
# function
986
524
logger.debug(" Fingerprint: %s", self.fingerprint)
987
self.created = settings.get("created",
988
datetime.datetime.utcnow())
525
self.created = settings.get("created", datetime.datetime.utcnow())
989
526
990
527
# attributes specific for this server instance
991
528
self.checker = None
995
532
self.current_checker_command = None
996
533
self.approved = None
997
534
self.approvals_pending = 0
998
self.changedstate = multiprocessing_manager.Condition(
999
multiprocessing_manager.Lock())
1000
self.client_structure = [attr
1001
for attr in self.__dict__.keys()
535
self.changedstate = (multiprocessing_manager
536
.Condition(multiprocessing_manager
537
.Lock()))
538
self.client_structure = [attr for attr in
539
self.__dict__.iterkeys()
1002
540
if not attr.startswith("_")]
1003
541
self.client_structure.append("client_structure")
1004
1005
for name, t in inspect.getmembers(
1006
type(self), lambda obj: isinstance(obj, property)):
542
543
for name, t in inspect.getmembers(type(self),
544
lambda obj:
545
isinstance(obj,
546
property)):
1007
547
if not name.startswith("_"):
1008
548
self.client_structure.append(name)
1009
549
1010
550
# Send notice to process children that client state has changed
1011
551
def send_changedstate(self):
1012
552
with self.changedstate:
1013
553
self.changedstate.notify_all()
1014
554
1015
555
def enable(self):
1016
556
"""Start this client's checker and timeout hooks"""
1017
557
if getattr(self, "enabled", False):
1018
558
# Already enabled
1019
559
return
560
self.send_changedstate()
1020
561
self.expires = datetime.datetime.utcnow() + self.timeout
1021
562
self.enabled = True
1022
563
self.last_enabled = datetime.datetime.utcnow()
1023
564
self.init_checker()
1024
self.send_changedstate()
1025
565
1026
566
def disable(self, quiet=True):
1027
567
"""Disable this client."""
1028
568
if not getattr(self, "enabled", False):
1029
569
return False
1030
570
if not quiet:
571
self.send_changedstate()
572
if not quiet:
1031
573
logger.info("Disabling client %s", self.name)
1032
if getattr(self, "disable_initiator_tag", None) is not None:
1033
GLib.source_remove(self.disable_initiator_tag)
574
if getattr(self, "disable_initiator_tag", False):
575
gobject.source_remove(self.disable_initiator_tag)
1034
576
self.disable_initiator_tag = None
1035
577
self.expires = None
1036
if getattr(self, "checker_initiator_tag", None) is not None:
1037
GLib.source_remove(self.checker_initiator_tag)
578
if getattr(self, "checker_initiator_tag", False):
579
gobject.source_remove(self.checker_initiator_tag)
1038
580
self.checker_initiator_tag = None
1039
581
self.stop_checker()
1040
582
self.enabled = False
1041
if not quiet:
1042
self.send_changedstate()
1043
# Do not run this again if called by a GLib.timeout_add
583
# Do not run this again if called by a gobject.timeout_add
1044
584
return False
1045
585
1046
586
def __del__(self):
1047
587
self.disable()
1048
588
1049
589
def init_checker(self):
1050
590
# Schedule a new checker to be started an 'interval' from now,
1051
591
# and every interval from then on.
1052
if self.checker_initiator_tag is not None:
1053
GLib.source_remove(self.checker_initiator_tag)
1054
self.checker_initiator_tag = GLib.timeout_add(
1055
random.randrange(int(self.interval.total_seconds() * 1000
1056
+ 1)),
1057
self.start_checker)
592
self.checker_initiator_tag = (gobject.timeout_add
593
(self.interval_milliseconds(),
594
self.start_checker))
1058
595
# Schedule a disable() when 'timeout' has passed
1059
if self.disable_initiator_tag is not None:
1060
GLib.source_remove(self.disable_initiator_tag)
1061
self.disable_initiator_tag = GLib.timeout_add(
1062
int(self.timeout.total_seconds() * 1000), self.disable)
596
self.disable_initiator_tag = (gobject.timeout_add
597
(self.timeout_milliseconds(),
598
self.disable))
1063
599
# Also start a new checker *right now*.
1064
600
self.start_checker()
1065
1066
def checker_callback(self, source, condition, connection,
1067
command):
601
602
def checker_callback(self, pid, condition, command):
1068
603
"""The checker has completed, so take appropriate actions."""
1069
# Read return code from connection (see call_pipe)
1070
returncode = connection.recv()
1071
connection.close()
1072
if self.checker is not None:
1073
self.checker.join()
1074
604
self.checker_callback_tag = None
1075
605
self.checker = None
1076
1077
if returncode >= 0:
1078
self.last_checker_status = returncode
1079
self.last_checker_signal = None
606
if os.WIFEXITED(condition):
607
self.last_checker_status = os.WEXITSTATUS(condition)
1080
608
if self.last_checker_status == 0:
1081
609
logger.info("Checker for %(name)s succeeded",
1082
610
vars(self))
1083
611
self.checked_ok()
1084
612
else:
1085
logger.info("Checker for %(name)s failed", vars(self))
613
logger.info("Checker for %(name)s failed",
614
vars(self))
1086
615
else:
1087
616
self.last_checker_status = -1
1088
self.last_checker_signal = -returncode
1089
617
logger.warning("Checker for %(name)s crashed?",
1090
618
vars(self))
1091
return False
1092
1093
def checked_ok(self):
1094
"""Assert that the client has been seen, alive and well."""
1095
self.last_checked_ok = datetime.datetime.utcnow()
1096
self.last_checker_status = 0
1097
self.last_checker_signal = None
1098
self.bump_timeout()
1099
1100
def bump_timeout(self, timeout=None):
1101
"""Bump up the timeout for this client."""
619
620
def checked_ok(self, timeout=None):
621
"""Bump up the timeout for this client.
622
623
This should only be called when the client has been seen,
624
alive and well.
625
"""
1102
626
if timeout is None:
1103
627
timeout = self.timeout
628
self.last_checked_ok = datetime.datetime.utcnow()
1104
629
if self.disable_initiator_tag is not None:
1105
GLib.source_remove(self.disable_initiator_tag)
1106
self.disable_initiator_tag = None
630
gobject.source_remove(self.disable_initiator_tag)
1107
631
if getattr(self, "enabled", False):
1108
self.disable_initiator_tag = GLib.timeout_add(
1109
int(timeout.total_seconds() * 1000), self.disable)
632
self.disable_initiator_tag = (gobject.timeout_add
633
(timedelta_to_milliseconds
634
(timeout), self.disable))
1110
635
self.expires = datetime.datetime.utcnow() + timeout
1111
636
1112
637
def need_approval(self):
1113
638
self.last_approval_request = datetime.datetime.utcnow()
1114
639
1115
640
def start_checker(self):
1116
641
"""Start a new checker subprocess if one is not running.
1117
642
1118
643
If a checker already exists, leave it running and do
1119
644
nothing."""
1120
645
# The reason for not killing a running checker is that if we
1121
# did that, and if a checker (for some reason) started running
1122
# slowly and taking more than 'interval' time, then the client
1123
# would inevitably timeout, since no checker would get a
1124
# chance to run to completion. If we instead leave running
646
# did that, then if a checker (for some reason) started
647
# running slowly and taking more than 'interval' time, the
648
# client would inevitably timeout, since no checker would get
649
# a chance to run to completion. If we instead leave running
1125
650
# checkers alone, the checker would have to take more time
1126
651
# than 'timeout' for the client to be disabled, which is as it
1127
652
# should be.
1128
1129
if self.checker is not None and not self.checker.is_alive():
1130
logger.warning("Checker was not alive; joining")
1131
self.checker.join()
1132
self.checker = None
653
654
# If a checker exists, make sure it is not a zombie
655
try:
656
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
657
except (AttributeError, OSError) as error:
658
if (isinstance(error, OSError)
659
and error.errno != errno.ECHILD):
660
raise error
661
else:
662
if pid:
663
logger.warning("Checker was a zombie")
664
gobject.source_remove(self.checker_callback_tag)
665
self.checker_callback(pid, status,
666
self.current_checker_command)
1133
667
# Start a new checker if needed
1134
668
if self.checker is None:
1135
# Escape attributes for the shell
1136
escaped_attrs = {
1137
attr: shlex.quote(str(getattr(self, attr)))
1138
for attr in self.runtime_expansions}
1139
669
try:
1140
command = self.checker_command % escaped_attrs
1141
except TypeError as error:
1142
logger.error('Could not format string "%s"',
1143
self.checker_command,
1144
exc_info=error)
1145
return True # Try again later
670
# In case checker_command has exactly one % operator
671
command = self.checker_command % self.host
672
except TypeError:
673
# Escape attributes for the shell
674
escaped_attrs = dict(
675
(attr,
676
re.escape(unicode(str(getattr(self, attr, "")),
677
errors=
678
'replace')))
679
for attr in
680
self.runtime_expansions)
681
682
try:
683
command = self.checker_command % escaped_attrs
684
except TypeError as error:
685
logger.error('Could not format string "%s":'
686
' %s', self.checker_command, error)
687
return True # Try again later
1146
688
self.current_checker_command = command
1147
logger.info("Starting checker %r for %s", command,
1148
self.name)
1149
# We don't need to redirect stdout and stderr, since
1150
# in normal mode, that is already done by daemon(),
1151
# and in debug mode we don't want to. (Stdin is
1152
# always replaced by /dev/null.)
1153
# The exception is when not debugging but nevertheless
1154
# running in the foreground; use the previously
1155
# created wnull.
1156
popen_args = {"close_fds": True,
1157
"shell": True,
1158
"cwd": "/"}
1159
if (not self.server_settings["debug"]
1160
and self.server_settings["foreground"]):
1161
popen_args.update({"stdout": wnull,
1162
"stderr": wnull})
1163
pipe = multiprocessing.Pipe(duplex=False)
1164
self.checker = multiprocessing.Process(
1165
target=call_pipe,
1166
args=(pipe[1], subprocess.call, command),
1167
kwargs=popen_args)
1168
self.checker.start()
1169
self.checker_callback_tag = GLib.io_add_watch(
1170
GLib.IOChannel.unix_new(pipe[0].fileno()),
1171
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1172
self.checker_callback, pipe[0], command)
1173
# Re-run this periodically if run by GLib.timeout_add
689
try:
690
logger.info("Starting checker %r for %s",
691
command, self.name)
692
# We don't need to redirect stdout and stderr, since
693
# in normal mode, that is already done by daemon(),
694
# and in debug mode we don't want to. (Stdin is
695
# always replaced by /dev/null.)
696
self.checker = subprocess.Popen(command,
697
close_fds=True,
698
shell=True, cwd="/")
699
self.checker_callback_tag = (gobject.child_watch_add
700
(self.checker.pid,
701
self.checker_callback,
702
data=command))
703
# The checker may have completed before the gobject
704
# watch was added. Check for this.
705
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
706
if pid:
707
gobject.source_remove(self.checker_callback_tag)
708
self.checker_callback(pid, status, command)
709
except OSError as error:
710
logger.error("Failed to start subprocess: %s",
711
error)
712
# Re-run this periodically if run by gobject.timeout_add
1174
713
return True
1175
714
1176
715
def stop_checker(self):
1177
716
"""Force the checker process, if any, to stop."""
1178
717
if self.checker_callback_tag:
1179
GLib.source_remove(self.checker_callback_tag)
718
gobject.source_remove(self.checker_callback_tag)
1180
719
self.checker_callback_tag = None
1181
720
if getattr(self, "checker", None) is None:
1182
721
return
1183
722
logger.debug("Stopping checker for %(name)s", vars(self))
1184
self.checker.terminate()
723
try:
724
os.kill(self.checker.pid, signal.SIGTERM)
725
#time.sleep(0.5)
726
#if self.checker.poll() is None:
727
# os.kill(self.checker.pid, signal.SIGKILL)
728
except OSError as error:
729
if error.errno != errno.ESRCH: # No such process
730
raise
1185
731
self.checker = None
1186
732
1187
733
1188
def dbus_service_property(dbus_interface,
1189
signature="v",
1190
access="readwrite",
1191
byte_arrays=False):
734
def dbus_service_property(dbus_interface, signature="v",
735
access="readwrite", byte_arrays=False):
1192
736
"""Decorators for marking methods of a DBusObjectWithProperties to
1193
737
become properties on the D-Bus.
1194
738
1195
739
The decorated method will be called with no arguments by "Get"
1196
740
and with one argument by "Set".
1197
741
1198
742
The parameters, where they are supported, are the same as
1199
743
dbus.service.method, except there is only "signature", since the
1200
744
type from Get() and the type sent to Set() is the same.
1203
747
# "Set" method, so we fail early here:
1204
748
if byte_arrays and signature != "ay":
1205
749
raise ValueError("Byte arrays not supported for non-'ay'"
1206
" signature {!r}".format(signature))
1207
750
" signature %r" % signature)
1208
751
def decorator(func):
1209
752
func._dbus_is_property = True
1210
753
func._dbus_interface = dbus_interface
1213
756
func._dbus_name = func.__name__
1214
757
if func._dbus_name.endswith("_dbus_property"):
1215
758
func._dbus_name = func._dbus_name[:-14]
1216
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1217
return func
1218
1219
return decorator
1220
1221
1222
def dbus_interface_annotations(dbus_interface):
1223
"""Decorator for marking functions returning interface annotations
1224
1225
Usage:
1226
1227
@dbus_interface_annotations("org.example.Interface")
1228
def _foo(self): # Function name does not matter
1229
return {"org.freedesktop.DBus.Deprecated": "true",
1230
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1231
"false"}
1232
"""
1233
1234
def decorator(func):
1235
func._dbus_is_interface = True
1236
func._dbus_interface = dbus_interface
1237
func._dbus_name = dbus_interface
1238
return func
1239
1240
return decorator
1241
1242
1243
def dbus_annotations(annotations):
1244
"""Decorator to annotate D-Bus methods, signals or properties
1245
Usage:
1246
1247
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1248
"org.freedesktop.DBus.Property."
1249
"EmitsChangedSignal": "false"})
1250
@dbus_service_property("org.example.Interface", signature="b",
1251
access="r")
1252
def Property_dbus_property(self):
1253
return dbus.Boolean(False)
1254
1255
See also the DBusObjectWithAnnotations class.
1256
"""
1257
1258
def decorator(func):
1259
func._dbus_annotations = annotations
1260
return func
1261
759
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
760
return func
1262
761
return decorator
1263
762
1264
763
1265
764
class DBusPropertyException(dbus.exceptions.DBusException):
1266
765
"""A base class for D-Bus property-related exceptions
1267
766
"""
1268
pass
767
def __unicode__(self):
768
return unicode(str(self))
1269
769
1270
770
1271
771
class DBusPropertyAccessException(DBusPropertyException):
1280
780
pass
1281
781
1282
782
1283
class DBusObjectWithAnnotations(dbus.service.Object):
1284
"""A D-Bus object with annotations.
1285
1286
Classes inheriting from this can use the dbus_annotations
1287
decorator to add annotations to methods or signals.
1288
"""
1289
1290
@staticmethod
1291
def _is_dbus_thing(thing):
1292
"""Returns a function testing if an attribute is a D-Bus thing
1293
1294
If called like _is_dbus_thing("method") it returns a function
1295
suitable for use as predicate to inspect.getmembers().
1296
"""
1297
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1298
False)
1299
1300
def _get_all_dbus_things(self, thing):
1301
"""Returns a generator of (name, attribute) pairs
1302
"""
1303
return ((getattr(athing.__get__(self), "_dbus_name", name),
1304
athing.__get__(self))
1305
for cls in self.__class__.__mro__
1306
for name, athing in
1307
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1308
1309
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1310
out_signature="s",
1311
path_keyword='object_path',
1312
connection_keyword='connection')
1313
def Introspect(self, object_path, connection):
1314
"""Overloading of standard D-Bus method.
1315
1316
Inserts annotation tags on methods and signals.
1317
"""
1318
xmlstring = dbus.service.Object.Introspect(self, object_path,
1319
connection)
1320
try:
1321
document = xml.dom.minidom.parseString(xmlstring)
1322
1323
for if_tag in document.getElementsByTagName("interface"):
1324
# Add annotation tags
1325
for typ in ("method", "signal"):
1326
for tag in if_tag.getElementsByTagName(typ):
1327
annots = dict()
1328
for name, prop in (self.
1329
_get_all_dbus_things(typ)):
1330
if (name == tag.getAttribute("name")
1331
and prop._dbus_interface
1332
== if_tag.getAttribute("name")):
1333
annots.update(getattr(
1334
prop, "_dbus_annotations", {}))
1335
for name, value in annots.items():
1336
ann_tag = document.createElement(
1337
"annotation")
1338
ann_tag.setAttribute("name", name)
1339
ann_tag.setAttribute("value", value)
1340
tag.appendChild(ann_tag)
1341
# Add interface annotation tags
1342
for annotation, value in dict(
1343
itertools.chain.from_iterable(
1344
annotations().items()
1345
for name, annotations
1346
in self._get_all_dbus_things("interface")
1347
if name == if_tag.getAttribute("name")
1348
)).items():
1349
ann_tag = document.createElement("annotation")
1350
ann_tag.setAttribute("name", annotation)
1351
ann_tag.setAttribute("value", value)
1352
if_tag.appendChild(ann_tag)
1353
# Fix argument name for the Introspect method itself
1354
if (if_tag.getAttribute("name")
1355
== dbus.INTROSPECTABLE_IFACE):
1356
for cn in if_tag.getElementsByTagName("method"):
1357
if cn.getAttribute("name") == "Introspect":
1358
for arg in cn.getElementsByTagName("arg"):
1359
if (arg.getAttribute("direction")
1360
== "out"):
1361
arg.setAttribute("name",
1362
"xml_data")
1363
xmlstring = document.toxml("utf-8")
1364
document.unlink()
1365
except (AttributeError, xml.dom.DOMException,
1366
xml.parsers.expat.ExpatError) as error:
1367
logger.error("Failed to override Introspection method",
1368
exc_info=error)
1369
return xmlstring
1370
1371
1372
class DBusObjectWithProperties(DBusObjectWithAnnotations):
783
class DBusObjectWithProperties(dbus.service.Object):
1373
784
"""A D-Bus object with properties.
1374
785
1375
786
Classes inheriting from this can use the dbus_service_property
1376
787
decorator to expose methods as D-Bus properties. It exposes the
1377
788
standard Get(), Set(), and GetAll() methods on the D-Bus.
1378
789
"""
1379
790
791
@staticmethod
792
def _is_dbus_property(obj):
793
return getattr(obj, "_dbus_is_property", False)
794
795
def _get_all_dbus_properties(self):
796
"""Returns a generator of (name, attribute) pairs
797
"""
798
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
799
for cls in self.__class__.__mro__
800
for name, prop in
801
inspect.getmembers(cls, self._is_dbus_property))
802
1380
803
def _get_dbus_property(self, interface_name, property_name):
1381
804
"""Returns a bound method if one exists which is a D-Bus
1382
805
property with the specified name and interface.
1383
806
"""
1384
for cls in self.__class__.__mro__:
1385
for name, value in inspect.getmembers(
1386
cls, self._is_dbus_thing("property")):
807
for cls in self.__class__.__mro__:
808
for name, value in (inspect.getmembers
809
(cls, self._is_dbus_property)):
1387
810
if (value._dbus_name == property_name
1388
811
and value._dbus_interface == interface_name):
1389
812
return value.__get__(self)
1390
813
1391
814
# No such property
1392
raise DBusPropertyNotFound("{}:{}.{}".format(
1393
self.dbus_object_path, interface_name, property_name))
1394
1395
@classmethod
1396
def _get_all_interface_names(cls):
1397
"""Get a sequence of all interfaces supported by an object"""
1398
return (name for name in set(getattr(getattr(x, attr),
1399
"_dbus_interface", None)
1400
for x in (inspect.getmro(cls))
1401
for attr in dir(x))
1402
if name is not None)
1403
1404
@dbus.service.method(dbus.PROPERTIES_IFACE,
1405
in_signature="ss",
815
raise DBusPropertyNotFound(self.dbus_object_path + ":"
816
+ interface_name + "."
817
+ property_name)
818
819
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1406
820
out_signature="v")
1407
821
def Get(self, interface_name, property_name):
1408
822
"""Standard D-Bus property Get() method, see D-Bus standard.
1414
828
if not hasattr(value, "variant_level"):
1415
829
return value
1416
830
return type(value)(value, variant_level=value.variant_level+1)
1417
831
1418
832
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1419
833
def Set(self, interface_name, property_name, value):
1420
834
"""Standard D-Bus property Set() method, see D-Bus standard.
1426
840
# The byte_arrays option is not supported yet on
1427
841
# signatures other than "ay".
1428
842
if prop._dbus_signature != "ay":
1429
raise ValueError("Byte arrays not supported for non-"
1430
"'ay' signature {!r}"
1431
.format(prop._dbus_signature))
1432
value = dbus.ByteArray(bytes(value))
843
raise ValueError
844
value = dbus.ByteArray(''.join(unichr(byte)
845
for byte in value))
1433
846
prop(value)
1434
1435
@dbus.service.method(dbus.PROPERTIES_IFACE,
1436
in_signature="s",
847
848
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1437
849
out_signature="a{sv}")
1438
850
def GetAll(self, interface_name):
1439
851
"""Standard D-Bus property GetAll() method, see D-Bus
1440
852
standard.
1441
853
1442
854
Note: Will not include properties with access="write".
1443
855
"""
1444
856
properties = {}
1445
for name, prop in self._get_all_dbus_things("property"):
857
for name, prop in self._get_all_dbus_properties():
1446
858
if (interface_name
1447
859
and interface_name != prop._dbus_interface):
1448
860
# Interface non-empty but did not match
1454
866
if not hasattr(value, "variant_level"):
1455
867
properties[name] = value
1456
868
continue
1457
properties[name] = type(value)(
1458
value, variant_level=value.variant_level + 1)
869
properties[name] = type(value)(value, variant_level=
870
value.variant_level+1)
1459
871
return dbus.Dictionary(properties, signature="sv")
1460
1461
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1462
def PropertiesChanged(self, interface_name, changed_properties,
1463
invalidated_properties):
1464
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1465
standard.
1466
"""
1467
pass
1468
872
1469
873
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1470
874
out_signature="s",
1471
875
path_keyword='object_path',
1472
876
connection_keyword='connection')
1473
877
def Introspect(self, object_path, connection):
1474
"""Overloading of standard D-Bus method.
1475
1476
Inserts property tags and interface annotation tags.
878
"""Standard D-Bus method, overloaded to insert property tags.
1477
879
"""
1478
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1479
object_path,
1480
connection)
880
xmlstring = dbus.service.Object.Introspect(self, object_path,
881
connection)
1481
882
try:
1482
883
document = xml.dom.minidom.parseString(xmlstring)
1483
1484
884
def make_tag(document, name, prop):
1485
885
e = document.createElement("property")
1486
886
e.setAttribute("name", name)
1487
887
e.setAttribute("type", prop._dbus_signature)
1488
888
e.setAttribute("access", prop._dbus_access)
1489
889
return e
1490
1491
890
for if_tag in document.getElementsByTagName("interface"):
1492
# Add property tags
1493
891
for tag in (make_tag(document, name, prop)
1494
892
for name, prop
1495
in self._get_all_dbus_things("property")
893
in self._get_all_dbus_properties()
1496
894
if prop._dbus_interface
1497
895
== if_tag.getAttribute("name")):
1498
896
if_tag.appendChild(tag)
1499
# Add annotation tags for properties
1500
for tag in if_tag.getElementsByTagName("property"):
1501
annots = dict()
1502
for name, prop in self._get_all_dbus_things(
1503
"property"):
1504
if (name == tag.getAttribute("name")
1505
and prop._dbus_interface
1506
== if_tag.getAttribute("name")):
1507
annots.update(getattr(
1508
prop, "_dbus_annotations", {}))
1509
for name, value in annots.items():
1510
ann_tag = document.createElement(
1511
"annotation")
1512
ann_tag.setAttribute("name", name)
1513
ann_tag.setAttribute("value", value)
1514
tag.appendChild(ann_tag)
1515
897
# Add the names to the return values for the
1516
898
# "org.freedesktop.DBus.Properties" methods
1517
899
if (if_tag.getAttribute("name")
1532
914
except (AttributeError, xml.dom.DOMException,
1533
915
xml.parsers.expat.ExpatError) as error:
1534
916
logger.error("Failed to override Introspection method",
1535
exc_info=error)
1536
return xmlstring
1537
1538
1539
try:
1540
dbus.OBJECT_MANAGER_IFACE
1541
except AttributeError:
1542
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1543
1544
1545
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1546
"""A D-Bus object with an ObjectManager.
1547
1548
Classes inheriting from this exposes the standard
1549
GetManagedObjects call and the InterfacesAdded and
1550
InterfacesRemoved signals on the standard
1551
"org.freedesktop.DBus.ObjectManager" interface.
1552
1553
Note: No signals are sent automatically; they must be sent
1554
manually.
1555
"""
1556
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1557
out_signature="a{oa{sa{sv}}}")
1558
def GetManagedObjects(self):
1559
"""This function must be overridden"""
1560
raise NotImplementedError()
1561
1562
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1563
signature="oa{sa{sv}}")
1564
def InterfacesAdded(self, object_path, interfaces_and_properties):
1565
pass
1566
1567
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1568
def InterfacesRemoved(self, object_path, interfaces):
1569
pass
1570
1571
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1572
out_signature="s",
1573
path_keyword='object_path',
1574
connection_keyword='connection')
1575
def Introspect(self, object_path, connection):
1576
"""Overloading of standard D-Bus method.
1577
1578
Override return argument name of GetManagedObjects to be
1579
"objpath_interfaces_and_properties"
1580
"""
1581
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1582
object_path,
1583
connection)
1584
try:
1585
document = xml.dom.minidom.parseString(xmlstring)
1586
1587
for if_tag in document.getElementsByTagName("interface"):
1588
# Fix argument name for the GetManagedObjects method
1589
if (if_tag.getAttribute("name")
1590
== dbus.OBJECT_MANAGER_IFACE):
1591
for cn in if_tag.getElementsByTagName("method"):
1592
if (cn.getAttribute("name")
1593
== "GetManagedObjects"):
1594
for arg in cn.getElementsByTagName("arg"):
1595
if (arg.getAttribute("direction")
1596
== "out"):
1597
arg.setAttribute(
1598
"name",
1599
"objpath_interfaces"
1600
"_and_properties")
1601
xmlstring = document.toxml("utf-8")
1602
document.unlink()
1603
except (AttributeError, xml.dom.DOMException,
1604
xml.parsers.expat.ExpatError) as error:
1605
logger.error("Failed to override Introspection method",
1606
exc_info=error)
1607
return xmlstring
1608
1609
1610
def datetime_to_dbus(dt, variant_level=0):
917
error)
918
return xmlstring
919
920
921
def datetime_to_dbus (dt, variant_level=0):
1611
922
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1612
923
if dt is None:
1613
return dbus.String("", variant_level=variant_level)
1614
return dbus.String(dt.isoformat(), variant_level=variant_level)
1615
1616
1617
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1618
"""A class decorator; applied to a subclass of
1619
dbus.service.Object, it will add alternate D-Bus attributes with
1620
interface names according to the "alt_interface_names" mapping.
1621
Usage:
1622
1623
@alternate_dbus_interfaces({"org.example.Interface":
1624
"net.example.AlternateInterface"})
1625
class SampleDBusObject(dbus.service.Object):
1626
@dbus.service.method("org.example.Interface")
1627
def SampleDBusMethod():
1628
pass
1629
1630
The above "SampleDBusMethod" on "SampleDBusObject" will be
1631
reachable via two interfaces: "org.example.Interface" and
1632
"net.example.AlternateInterface", the latter of which will have
1633
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1634
"true", unless "deprecate" is passed with a False value.
1635
1636
This works for methods and signals, and also for D-Bus properties
1637
(from DBusObjectWithProperties) and interfaces (from the
1638
dbus_interface_annotations decorator).
924
return dbus.String("", variant_level = variant_level)
925
return dbus.String(dt.isoformat(),
926
variant_level=variant_level)
927
928
929
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
930
.__metaclass__):
931
"""Applied to an empty subclass of a D-Bus object, this metaclass
932
will add additional D-Bus attributes matching a certain pattern.
1639
933
"""
1640
1641
def wrapper(cls):
1642
for orig_interface_name, alt_interface_name in (
1643
alt_interface_names.items()):
1644
attr = {}
1645
interface_names = set()
1646
# Go though all attributes of the class
1647
for attrname, attribute in inspect.getmembers(cls):
934
def __new__(mcs, name, bases, attr):
935
# Go through all the base classes which could have D-Bus
936
# methods, signals, or properties in them
937
for base in (b for b in bases
938
if issubclass(b, dbus.service.Object)):
939
# Go though all attributes of the base class
940
for attrname, attribute in inspect.getmembers(base):
1648
941
# Ignore non-D-Bus attributes, and D-Bus attributes
1649
942
# with the wrong interface name
1650
943
if (not hasattr(attribute, "_dbus_interface")
1651
or not attribute._dbus_interface.startswith(
1652
orig_interface_name)):
944
or not attribute._dbus_interface
945
.startswith("se.recompile.Mandos")):
1653
946
continue
1654
947
# Create an alternate D-Bus interface name based on
1655
948
# the current name
1656
alt_interface = attribute._dbus_interface.replace(
1657
orig_interface_name, alt_interface_name)
1658
interface_names.add(alt_interface)
949
alt_interface = (attribute._dbus_interface
950
.replace("se.recompile.Mandos",
951
"se.bsnet.fukt.Mandos"))
1659
952
# Is this a D-Bus signal?
1660
953
if getattr(attribute, "_dbus_is_signal", False):
1661
# Extract the original non-method undecorated
1662
# function by black magic
1663
if sys.version_info.major == 2:
1664
nonmethod_func = (dict(
954
# Extract the original non-method function by
955
# black magic
956
nonmethod_func = (dict(
1665
957
zip(attribute.func_code.co_freevars,
1666
attribute.__closure__))
1667
["func"].cell_contents)
1668
else:
1669
nonmethod_func = (dict(
1670
zip(attribute.__code__.co_freevars,
1671
attribute.__closure__))
1672
["func"].cell_contents)
958
attribute.__closure__))["func"]
959
.cell_contents)
1673
960
# Create a new, but exactly alike, function
1674
961
# object, and decorate it to be a new D-Bus signal
1675
962
# with the alternate D-Bus interface name
1676
new_function = copy_function(nonmethod_func)
1677
new_function = (dbus.service.signal(
1678
alt_interface,
1679
attribute._dbus_signature)(new_function))
1680
# Copy annotations, if any
1681
try:
1682
new_function._dbus_annotations = dict(
1683
attribute._dbus_annotations)
1684
except AttributeError:
1685
pass
1686
963
new_function = (dbus.service.signal
964
(alt_interface,
965
attribute._dbus_signature)
966
(types.FunctionType(
967
nonmethod_func.func_code,
968
nonmethod_func.func_globals,
969
nonmethod_func.func_name,
970
nonmethod_func.func_defaults,
971
nonmethod_func.func_closure)))
1687
972
# Define a creator of a function to call both the
1688
# original and alternate functions, so both the
1689
# original and alternate signals gets sent when
1690
# the function is called
973
# old and new functions, so both the old and new
974
# signals gets sent when the function is called
1691
975
def fixscope(func1, func2):
1692
976
"""This function is a scope container to pass
1693
977
func1 and func2 to the "call_both" function
1694
978
outside of its arguments"""
1695
1696
@functools.wraps(func2)
1697
979
def call_both(*args, **kwargs):
1698
980
"""This function will emit two D-Bus
1699
981
signals by calling func1 and func2"""
1700
982
func1(*args, **kwargs)
1701
983
func2(*args, **kwargs)
1702
# Make wrapper function look like a D-Bus
1703
# signal
1704
for name, attr in inspect.getmembers(func2):
1705
if name.startswith("_dbus_"):
1706
setattr(call_both, name, attr)
1707
1708
984
return call_both
1709
985
# Create the "call_both" function and add it to
1710
986
# the class
1711
attr[attrname] = fixscope(attribute, new_function)
987
attr[attrname] = fixscope(attribute,
988
new_function)
1712
989
# Is this a D-Bus method?
1713
990
elif getattr(attribute, "_dbus_is_method", False):
1714
991
# Create a new, but exactly alike, function
1715
992
# object. Decorate it to be a new D-Bus method
1716
993
# with the alternate D-Bus interface name. Add it
1717
994
# to the class.
1718
attr[attrname] = (
1719
dbus.service.method(
1720
alt_interface,
1721
attribute._dbus_in_signature,
1722
attribute._dbus_out_signature)
1723
(copy_function(attribute)))
1724
# Copy annotations, if any
1725
try:
1726
attr[attrname]._dbus_annotations = dict(
1727
attribute._dbus_annotations)
1728
except AttributeError:
1729
pass
995
attr[attrname] = (dbus.service.method
996
(alt_interface,
997
attribute._dbus_in_signature,
998
attribute._dbus_out_signature)
999
(types.FunctionType
1000
(attribute.func_code,
1001
attribute.func_globals,
1002
attribute.func_name,
1003
attribute.func_defaults,
1004
attribute.func_closure)))
1730
1005
# Is this a D-Bus property?
1731
1006
elif getattr(attribute, "_dbus_is_property", False):
1732
1007
# Create a new, but exactly alike, function
1733
1008
# object, and decorate it to be a new D-Bus
1734
1009
# property with the alternate D-Bus interface
1735
1010
# name. Add it to the class.
1736
attr[attrname] = (dbus_service_property(
1737
alt_interface, attribute._dbus_signature,
1738
attribute._dbus_access,
1739
attribute._dbus_get_args_options
1740
["byte_arrays"])
1741
(copy_function(attribute)))
1742
# Copy annotations, if any
1743
try:
1744
attr[attrname]._dbus_annotations = dict(
1745
attribute._dbus_annotations)
1746
except AttributeError:
1747
pass
1748
# Is this a D-Bus interface?
1749
elif getattr(attribute, "_dbus_is_interface", False):
1750
# Create a new, but exactly alike, function
1751
# object. Decorate it to be a new D-Bus interface
1752
# with the alternate D-Bus interface name. Add it
1753
# to the class.
1754
attr[attrname] = (
1755
dbus_interface_annotations(alt_interface)
1756
(copy_function(attribute)))
1757
if deprecate:
1758
# Deprecate all alternate interfaces
1759
iname = "_AlternateDBusNames_interface_annotation{}"
1760
for interface_name in interface_names:
1761
1762
@dbus_interface_annotations(interface_name)
1763
def func(self):
1764
return {"org.freedesktop.DBus.Deprecated":
1765
"true"}
1766
# Find an unused name
1767
for aname in (iname.format(i)
1768
for i in itertools.count()):
1769
if aname not in attr:
1770
attr[aname] = func
1771
break
1772
if interface_names:
1773
# Replace the class with a new subclass of it with
1774
# methods, signals, etc. as created above.
1775
if sys.version_info.major == 2:
1776
cls = type(b"{}Alternate".format(cls.__name__),
1777
(cls, ), attr)
1778
else:
1779
cls = type("{}Alternate".format(cls.__name__),
1780
(cls, ), attr)
1781
return cls
1782
1783
return wrapper
1784
1785
1786
@alternate_dbus_interfaces({"se.recompile.Mandos":
1787
"se.bsnet.fukt.Mandos"})
1011
attr[attrname] = (dbus_service_property
1012
(alt_interface,
1013
attribute._dbus_signature,
1014
attribute._dbus_access,
1015
attribute
1016
._dbus_get_args_options
1017
["byte_arrays"])
1018
(types.FunctionType
1019
(attribute.func_code,
1020
attribute.func_globals,
1021
attribute.func_name,
1022
attribute.func_defaults,
1023
attribute.func_closure)))
1024
return type.__new__(mcs, name, bases, attr)
1025
1026
1788
1027
class ClientDBus(Client, DBusObjectWithProperties):
1789
1028
"""A Client class using D-Bus
1790
1029
1791
1030
Attributes:
1792
1031
dbus_object_path: dbus.ObjectPath
1793
1032
bus: dbus.SystemBus()
1794
1033
"""
1795
1034
1796
1035
runtime_expansions = (Client.runtime_expansions
1797
+ ("dbus_object_path", ))
1798
1799
_interface = "se.recompile.Mandos.Client"
1800
1036
+ ("dbus_object_path",))
1037
1801
1038
# dbus.service.Object doesn't use super(), so we can't either.
1802
1803
def __init__(self, bus=None, *args, **kwargs):
1039
1040
def __init__(self, bus = None, *args, **kwargs):
1804
1041
self.bus = bus
1805
1042
Client.__init__(self, *args, **kwargs)
1043
self._approvals_pending = 0
1044
1045
self._approvals_pending = 0
1806
1046
# Only now, when this client is initialized, can it show up on
1807
1047
# the D-Bus
1808
client_object_name = str(self.name).translate(
1048
client_object_name = unicode(self.name).translate(
1809
1049
{ord("."): ord("_"),
1810
1050
ord("-"): ord("_")})
1811
self.dbus_object_path = dbus.ObjectPath(
1812
"/clients/" + client_object_name)
1051
self.dbus_object_path = (dbus.ObjectPath
1052
("/clients/" + client_object_name))
1813
1053
DBusObjectWithProperties.__init__(self, self.bus,
1814
1054
self.dbus_object_path)
1815
1816
def notifychangeproperty(transform_func, dbus_name,
1817
type_func=lambda x: x,
1818
variant_level=1,
1819
invalidate_only=False,
1820
_interface=_interface):
1055
1056
def notifychangeproperty(transform_func,
1057
dbus_name, type_func=lambda x: x,
1058
variant_level=1):
1821
1059
""" Modify a variable so that it's a property which announces
1822
1060
its changes to DBus.
1823
1061
1824
1062
transform_fun: Function that takes a value and a variant_level
1825
1063
and transforms it to a D-Bus type.
1826
1064
dbus_name: D-Bus name of the variable
1828
1066
to the D-Bus. Default: no transform
1829
1067
variant_level: D-Bus variant level. Default: 1
1830
1068
"""
1831
attrname = "_{}".format(dbus_name)
1832
1069
attrname = "_{0}".format(dbus_name)
1833
1070
def setter(self, value):
1834
1071
if hasattr(self, "dbus_object_path"):
1835
1072
if (not hasattr(self, attrname) or
1836
1073
type_func(getattr(self, attrname, None))
1837
1074
!= type_func(value)):
1838
if invalidate_only:
1839
self.PropertiesChanged(
1840
_interface, dbus.Dictionary(),
1841
dbus.Array((dbus_name, )))
1842
else:
1843
dbus_value = transform_func(
1844
type_func(value),
1845
variant_level=variant_level)
1846
self.PropertyChanged(dbus.String(dbus_name),
1847
dbus_value)
1848
self.PropertiesChanged(
1849
_interface,
1850
dbus.Dictionary({dbus.String(dbus_name):
1851
dbus_value}),
1852
dbus.Array())
1075
dbus_value = transform_func(type_func(value),
1076
variant_level
1077
=variant_level)
1078
self.PropertyChanged(dbus.String(dbus_name),
1079
dbus_value)
1853
1080
setattr(self, attrname, value)
1854
1081
1855
1082
return property(lambda self: getattr(self, attrname), setter)
1856
1083
1084
1857
1085
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1858
1086
approvals_pending = notifychangeproperty(dbus.Boolean,
1859
1087
"ApprovalPending",
1860
type_func=bool)
1088
type_func = bool)
1861
1089
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1862
1090
last_enabled = notifychangeproperty(datetime_to_dbus,
1863
1091
"LastEnabled")
1864
checker = notifychangeproperty(
1865
dbus.Boolean, "CheckerRunning",
1866
type_func=lambda checker: checker is not None)
1092
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1093
type_func = lambda checker:
1094
checker is not None)
1867
1095
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1868
1096
"LastCheckedOK")
1869
last_checker_status = notifychangeproperty(dbus.Int16,
1870
"LastCheckerStatus")
1871
1097
last_approval_request = notifychangeproperty(
1872
1098
datetime_to_dbus, "LastApprovalRequest")
1873
1099
approved_by_default = notifychangeproperty(dbus.Boolean,
1874
1100
"ApprovedByDefault")
1875
approval_delay = notifychangeproperty(
1876
dbus.UInt64, "ApprovalDelay",
1877
type_func=lambda td: td.total_seconds() * 1000)
1101
approval_delay = notifychangeproperty(dbus.UInt64,
1102
"ApprovalDelay",
1103
type_func =
1104
timedelta_to_milliseconds)
1878
1105
approval_duration = notifychangeproperty(
1879
1106
dbus.UInt64, "ApprovalDuration",
1880
type_func=lambda td: td.total_seconds() * 1000)
1107
type_func = timedelta_to_milliseconds)
1881
1108
host = notifychangeproperty(dbus.String, "Host")
1882
timeout = notifychangeproperty(
1883
dbus.UInt64, "Timeout",
1884
type_func=lambda td: td.total_seconds() * 1000)
1109
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1110
type_func =
1111
timedelta_to_milliseconds)
1885
1112
extended_timeout = notifychangeproperty(
1886
1113
dbus.UInt64, "ExtendedTimeout",
1887
type_func=lambda td: td.total_seconds() * 1000)
1888
interval = notifychangeproperty(
1889
dbus.UInt64, "Interval",
1890
type_func=lambda td: td.total_seconds() * 1000)
1114
type_func = timedelta_to_milliseconds)
1115
interval = notifychangeproperty(dbus.UInt64,
1116
"Interval",
1117
type_func =
1118
timedelta_to_milliseconds)
1891
1119
checker_command = notifychangeproperty(dbus.String, "Checker")
1892
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1893
invalidate_only=True)
1894
1120
1895
1121
del notifychangeproperty
1896
1122
1897
1123
def __del__(self, *args, **kwargs):
1898
1124
try:
1899
1125
self.remove_from_connection()
1902
1128
if hasattr(DBusObjectWithProperties, "__del__"):
1903
1129
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1904
1130
Client.__del__(self, *args, **kwargs)
1905
1906
def checker_callback(self, source, condition,
1907
connection, command, *args, **kwargs):
1908
ret = Client.checker_callback(self, source, condition,
1909
connection, command, *args,
1910
**kwargs)
1911
exitstatus = self.last_checker_status
1912
if exitstatus >= 0:
1131
1132
def checker_callback(self, pid, condition, command,
1133
*args, **kwargs):
1134
self.checker_callback_tag = None
1135
self.checker = None
1136
if os.WIFEXITED(condition):
1137
exitstatus = os.WEXITSTATUS(condition)
1913
1138
# Emit D-Bus signal
1914
1139
self.CheckerCompleted(dbus.Int16(exitstatus),
1915
# This is specific to GNU libC
1916
dbus.Int64(exitstatus << 8),
1140
dbus.Int64(condition),
1917
1141
dbus.String(command))
1918
1142
else:
1919
1143
# Emit D-Bus signal
1920
1144
self.CheckerCompleted(dbus.Int16(-1),
1921
dbus.Int64(
1922
# This is specific to GNU libC
1923
(exitstatus << 8)
1924
| self.last_checker_signal),
1145
dbus.Int64(condition),
1925
1146
dbus.String(command))
1926
return ret
1927
1147
1148
return Client.checker_callback(self, pid, condition, command,
1149
*args, **kwargs)
1150
1928
1151
def start_checker(self, *args, **kwargs):
1929
old_checker_pid = getattr(self.checker, "pid", None)
1152
old_checker = self.checker
1153
if self.checker is not None:
1154
old_checker_pid = self.checker.pid
1155
else:
1156
old_checker_pid = None
1930
1157
r = Client.start_checker(self, *args, **kwargs)
1931
1158
# Only if new checker process was started
1932
1159
if (self.checker is not None
1934
1161
# Emit D-Bus signal
1935
1162
self.CheckerStarted(self.current_checker_command)
1936
1163
return r
1937
1164
1938
1165
def _reset_approved(self):
1939
1166
self.approved = None
1940
1167
return False
1941
1168
1942
1169
def approve(self, value=True):
1170
self.send_changedstate()
1943
1171
self.approved = value
1944
GLib.timeout_add(int(self.approval_duration.total_seconds()
1945
* 1000), self._reset_approved)
1946
self.send_changedstate()
1947
1948
# D-Bus methods, signals & properties
1949
1950
# Interfaces
1951
1952
# Signals
1953
1172
gobject.timeout_add(timedelta_to_milliseconds
1173
(self.approval_duration),
1174
self._reset_approved)
1175
1176
1177
## D-Bus methods, signals & properties
1178
_interface = "se.recompile.Mandos.Client"
1179
1180
## Signals
1181
1954
1182
# CheckerCompleted - signal
1955
1183
@dbus.service.signal(_interface, signature="nxs")
1956
1184
def CheckerCompleted(self, exitcode, waitstatus, command):
1957
1185
"D-Bus signal"
1958
1186
pass
1959
1187
1960
1188
# CheckerStarted - signal
1961
1189
@dbus.service.signal(_interface, signature="s")
1962
1190
def CheckerStarted(self, command):
1963
1191
"D-Bus signal"
1964
1192
pass
1965
1193
1966
1194
# PropertyChanged - signal
1967
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1968
1195
@dbus.service.signal(_interface, signature="sv")
1969
1196
def PropertyChanged(self, property, value):
1970
1197
"D-Bus signal"
1971
1198
pass
1972
1199
1973
1200
# GotSecret - signal
1974
1201
@dbus.service.signal(_interface)
1975
1202
def GotSecret(self):
1978
1205
server to mandos-client
1979
1206
"""
1980
1207
pass
1981
1208
1982
1209
# Rejected - signal
1983
1210
@dbus.service.signal(_interface, signature="s")
1984
1211
def Rejected(self, reason):
1985
1212
"D-Bus signal"
1986
1213
pass
1987
1214
1988
1215
# NeedApproval - signal
1989
1216
@dbus.service.signal(_interface, signature="tb")
1990
1217
def NeedApproval(self, timeout, default):
1991
1218
"D-Bus signal"
1992
1219
return self.need_approval()
1993
1994
# Methods
1995
1220
1221
# NeRwequest - signal
1222
@dbus.service.signal(_interface, signature="s")
1223
def NewRequest(self, ip):
1224
"""D-Bus signal
1225
Is sent after a client request a password.
1226
"""
1227
pass
1228
1229
## Methods
1230
1996
1231
# Approve - method
1997
1232
@dbus.service.method(_interface, in_signature="b")
1998
1233
def Approve(self, value):
1999
1234
self.approve(value)
2000
1235
2001
1236
# CheckedOK - method
2002
1237
@dbus.service.method(_interface)
2003
1238
def CheckedOK(self):
2004
1239
self.checked_ok()
2005
1240
2006
1241
# Enable - method
2007
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2008
1242
@dbus.service.method(_interface)
2009
1243
def Enable(self):
2010
1244
"D-Bus method"
2011
1245
self.enable()
2012
1246
2013
1247
# StartChecker - method
2014
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2015
1248
@dbus.service.method(_interface)
2016
1249
def StartChecker(self):
2017
1250
"D-Bus method"
2018
1251
self.start_checker()
2019
1252
2020
1253
# Disable - method
2021
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2022
1254
@dbus.service.method(_interface)
2023
1255
def Disable(self):
2024
1256
"D-Bus method"
2025
1257
self.disable()
2026
1258
2027
1259
# StopChecker - method
2028
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2029
1260
@dbus.service.method(_interface)
2030
1261
def StopChecker(self):
2031
1262
self.stop_checker()
2032
2033
# Properties
2034
1263
1264
## Properties
1265
2035
1266
# ApprovalPending - property
2036
1267
@dbus_service_property(_interface, signature="b", access="read")
2037
1268
def ApprovalPending_dbus_property(self):
2038
1269
return dbus.Boolean(bool(self.approvals_pending))
2039
1270
2040
1271
# ApprovedByDefault - property
2041
@dbus_service_property(_interface,
2042
signature="b",
1272
@dbus_service_property(_interface, signature="b",
2043
1273
access="readwrite")
2044
1274
def ApprovedByDefault_dbus_property(self, value=None):
2045
1275
if value is None: # get
2046
1276
return dbus.Boolean(self.approved_by_default)
2047
1277
self.approved_by_default = bool(value)
2048
1278
2049
1279
# ApprovalDelay - property
2050
@dbus_service_property(_interface,
2051
signature="t",
1280
@dbus_service_property(_interface, signature="t",
2052
1281
access="readwrite")
2053
1282
def ApprovalDelay_dbus_property(self, value=None):
2054
1283
if value is None: # get
2055
return dbus.UInt64(self.approval_delay.total_seconds()
2056
* 1000)
1284
return dbus.UInt64(self.approval_delay_milliseconds())
2057
1285
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2058
1286
2059
1287
# ApprovalDuration - property
2060
@dbus_service_property(_interface,
2061
signature="t",
1288
@dbus_service_property(_interface, signature="t",
2062
1289
access="readwrite")
2063
1290
def ApprovalDuration_dbus_property(self, value=None):
2064
1291
if value is None: # get
2065
return dbus.UInt64(self.approval_duration.total_seconds()
2066
* 1000)
1292
return dbus.UInt64(timedelta_to_milliseconds(
1293
self.approval_duration))
2067
1294
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2068
1295
2069
1296
# Name - property
2070
@dbus_annotations(
2071
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2072
1297
@dbus_service_property(_interface, signature="s", access="read")
2073
1298
def Name_dbus_property(self):
2074
1299
return dbus.String(self.name)
2075
2076
# KeyID - property
2077
@dbus_annotations(
2078
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2079
@dbus_service_property(_interface, signature="s", access="read")
2080
def KeyID_dbus_property(self):
2081
return dbus.String(self.key_id)
2082
1300
2083
1301
# Fingerprint - property
2084
@dbus_annotations(
2085
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2086
1302
@dbus_service_property(_interface, signature="s", access="read")
2087
1303
def Fingerprint_dbus_property(self):
2088
1304
return dbus.String(self.fingerprint)
2089
1305
2090
1306
# Host - property
2091
@dbus_service_property(_interface,
2092
signature="s",
1307
@dbus_service_property(_interface, signature="s",
2093
1308
access="readwrite")
2094
1309
def Host_dbus_property(self, value=None):
2095
1310
if value is None: # get
2096
1311
return dbus.String(self.host)
2097
self.host = str(value)
2098
1312
self.host = unicode(value)
1313
2099
1314
# Created - property
2100
@dbus_annotations(
2101
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2102
1315
@dbus_service_property(_interface, signature="s", access="read")
2103
1316
def Created_dbus_property(self):
2104
1317
return datetime_to_dbus(self.created)
2105
1318
2106
1319
# LastEnabled - property
2107
1320
@dbus_service_property(_interface, signature="s", access="read")
2108
1321
def LastEnabled_dbus_property(self):
2109
1322
return datetime_to_dbus(self.last_enabled)
2110
1323
2111
1324
# Enabled - property
2112
@dbus_service_property(_interface,
2113
signature="b",
1325
@dbus_service_property(_interface, signature="b",
2114
1326
access="readwrite")
2115
1327
def Enabled_dbus_property(self, value=None):
2116
1328
if value is None: # get
2119
1331
self.enable()
2120
1332
else:
2121
1333
self.disable()
2122
1334
2123
1335
# LastCheckedOK - property
2124
@dbus_service_property(_interface,
2125
signature="s",
1336
@dbus_service_property(_interface, signature="s",
2126
1337
access="readwrite")
2127
1338
def LastCheckedOK_dbus_property(self, value=None):
2128
1339
if value is not None:
2129
1340
self.checked_ok()
2130
1341
return
2131
1342
return datetime_to_dbus(self.last_checked_ok)
2132
2133
# LastCheckerStatus - property
2134
@dbus_service_property(_interface, signature="n", access="read")
2135
def LastCheckerStatus_dbus_property(self):
2136
return dbus.Int16(self.last_checker_status)
2137
1343
2138
1344
# Expires - property
2139
1345
@dbus_service_property(_interface, signature="s", access="read")
2140
1346
def Expires_dbus_property(self):
2141
1347
return datetime_to_dbus(self.expires)
2142
1348
2143
1349
# LastApprovalRequest - property
2144
1350
@dbus_service_property(_interface, signature="s", access="read")
2145
1351
def LastApprovalRequest_dbus_property(self):
2146
1352
return datetime_to_dbus(self.last_approval_request)
2147
1353
2148
1354
# Timeout - property
2149
@dbus_service_property(_interface,
2150
signature="t",
1355
@dbus_service_property(_interface, signature="t",
2151
1356
access="readwrite")
2152
1357
def Timeout_dbus_property(self, value=None):
2153
1358
if value is None: # get
2154
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2155
old_timeout = self.timeout
1359
return dbus.UInt64(self.timeout_milliseconds())
2156
1360
self.timeout = datetime.timedelta(0, 0, 0, value)
2157
# Reschedule disabling
2158
if self.enabled:
2159
now = datetime.datetime.utcnow()
2160
self.expires += self.timeout - old_timeout
2161
if self.expires <= now:
2162
# The timeout has passed
2163
self.disable()
2164
else:
2165
if (getattr(self, "disable_initiator_tag", None)
2166
is None):
2167
return
2168
GLib.source_remove(self.disable_initiator_tag)
2169
self.disable_initiator_tag = GLib.timeout_add(
2170
int((self.expires - now).total_seconds() * 1000),
2171
self.disable)
2172
1361
if getattr(self, "disable_initiator_tag", None) is None:
1362
return
1363
# Reschedule timeout
1364
gobject.source_remove(self.disable_initiator_tag)
1365
self.disable_initiator_tag = None
1366
self.expires = None
1367
time_to_die = timedelta_to_milliseconds((self
1368
.last_checked_ok
1369
+ self.timeout)
1370
- datetime.datetime
1371
.utcnow())
1372
if time_to_die <= 0:
1373
# The timeout has passed
1374
self.disable()
1375
else:
1376
self.expires = (datetime.datetime.utcnow()
1377
+ datetime.timedelta(milliseconds =
1378
time_to_die))
1379
self.disable_initiator_tag = (gobject.timeout_add
1380
(time_to_die, self.disable))
1381
2173
1382
# ExtendedTimeout - property
2174
@dbus_service_property(_interface,
2175
signature="t",
1383
@dbus_service_property(_interface, signature="t",
2176
1384
access="readwrite")
2177
1385
def ExtendedTimeout_dbus_property(self, value=None):
2178
1386
if value is None: # get
2179
return dbus.UInt64(self.extended_timeout.total_seconds()
2180
* 1000)
1387
return dbus.UInt64(self.extended_timeout_milliseconds())
2181
1388
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2182
1389
2183
1390
# Interval - property
2184
@dbus_service_property(_interface,
2185
signature="t",
1391
@dbus_service_property(_interface, signature="t",
2186
1392
access="readwrite")
2187
1393
def Interval_dbus_property(self, value=None):
2188
1394
if value is None: # get
2189
return dbus.UInt64(self.interval.total_seconds() * 1000)
1395
return dbus.UInt64(self.interval_milliseconds())
2190
1396
self.interval = datetime.timedelta(0, 0, 0, value)
2191
1397
if getattr(self, "checker_initiator_tag", None) is None:
2192
1398
return
2193
1399
if self.enabled:
2194
1400
# Reschedule checker run
2195
GLib.source_remove(self.checker_initiator_tag)
2196
self.checker_initiator_tag = GLib.timeout_add(
2197
value, self.start_checker)
2198
self.start_checker() # Start one now, too
2199
1401
gobject.source_remove(self.checker_initiator_tag)
1402
self.checker_initiator_tag = (gobject.timeout_add
1403
(value, self.start_checker))
1404
self.start_checker() # Start one now, too
1405
2200
1406
# Checker - property
2201
@dbus_service_property(_interface,
2202
signature="s",
1407
@dbus_service_property(_interface, signature="s",
2203
1408
access="readwrite")
2204
1409
def Checker_dbus_property(self, value=None):
2205
1410
if value is None: # get
2206
1411
return dbus.String(self.checker_command)
2207
self.checker_command = str(value)
2208
1412
self.checker_command = unicode(value)
1413
2209
1414
# CheckerRunning - property
2210
@dbus_service_property(_interface,
2211
signature="b",
1415
@dbus_service_property(_interface, signature="b",
2212
1416
access="readwrite")
2213
1417
def CheckerRunning_dbus_property(self, value=None):
2214
1418
if value is None: # get
2217
1421
self.start_checker()
2218
1422
else:
2219
1423
self.stop_checker()
2220
1424
2221
1425
# ObjectPath - property
2222
@dbus_annotations(
2223
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2224
"org.freedesktop.DBus.Deprecated": "true"})
2225
1426
@dbus_service_property(_interface, signature="o", access="read")
2226
1427
def ObjectPath_dbus_property(self):
2227
return self.dbus_object_path # is already a dbus.ObjectPath
2228
1428
return self.dbus_object_path # is already a dbus.ObjectPath
1429
2229
1430
# Secret = property
2230
@dbus_annotations(
2231
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2232
"invalidates"})
2233
@dbus_service_property(_interface,
2234
signature="ay",
2235
access="write",
2236
byte_arrays=True)
1431
@dbus_service_property(_interface, signature="ay",
1432
access="write", byte_arrays=True)
2237
1433
def Secret_dbus_property(self, value):
2238
self.secret = bytes(value)
2239
1434
self.secret = str(value)
1435
2240
1436
del _interface
2241
1437
2242
1438
2243
class ProxyClient:
2244
def __init__(self, child_pipe, key_id, fpr, address):
1439
class ProxyClient(object):
1440
def __init__(self, child_pipe, fpr, address):
2245
1441
self._pipe = child_pipe
2246
self._pipe.send(('init', key_id, fpr, address))
1442
self._pipe.send(('init', fpr, address))
2247
1443
if not self._pipe.recv():
2248
raise KeyError(key_id or fpr)
2249
1444
raise KeyError()
1445
2250
1446
def __getattribute__(self, name):
2251
1447
if name == '_pipe':
2252
1448
return super(ProxyClient, self).__getattribute__(name)
2255
1451
if data[0] == 'data':
2256
1452
return data[1]
2257
1453
if data[0] == 'function':
2258
2259
1454
def func(*args, **kwargs):
2260
1455
self._pipe.send(('funcall', name, args, kwargs))
2261
1456
return self._pipe.recv()[1]
2262
2263
1457
return func
2264
1458
2265
1459
def __setattr__(self, name, value):
2266
1460
if name == '_pipe':
2267
1461
return super(ProxyClient, self).__setattr__(name, value)
2268
1462
self._pipe.send(('setattr', name, value))
2269
1463
2270
1464
1465
class ClientDBusTransitional(ClientDBus):
1466
__metaclass__ = AlternateDBusNamesMetaclass
1467
1468
2271
1469
class ClientHandler(socketserver.BaseRequestHandler, object):
2272
1470
"""A class to handle client connections.
2273
1471
2274
1472
Instantiated once for each connection to handle it.
2275
1473
Note: This will run in its own forked process."""
2276
1474
2277
1475
def handle(self):
2278
1476
with contextlib.closing(self.server.child_pipe) as child_pipe:
2279
1477
logger.info("TCP connection from: %s",
2280
str(self.client_address))
1478
unicode(self.client_address))
2281
1479
logger.debug("Pipe FD: %d",
2282
1480
self.server.child_pipe.fileno())
2283
2284
session = gnutls.ClientSession(self.request)
2285
2286
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2287
# "+AES-256-CBC", "+SHA1",
2288
# "+COMP-NULL", "+CTYPE-OPENPGP",
2289
# "+DHE-DSS"))
1481
1482
session = (gnutls.connection
1483
.ClientSession(self.request,
1484
gnutls.connection
1485
.X509Credentials()))
1486
1487
# Note: gnutls.connection.X509Credentials is really a
1488
# generic GnuTLS certificate credentials object so long as
1489
# no X.509 keys are added to it. Therefore, we can use it
1490
# here despite using OpenPGP certificates.
1491
1492
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1493
# "+AES-256-CBC", "+SHA1",
1494
# "+COMP-NULL", "+CTYPE-OPENPGP",
1495
# "+DHE-DSS"))
2290
1496
# Use a fallback default, since this MUST be set.
2291
1497
priority = self.server.gnutls_priority
2292
1498
if priority is None:
2293
1499
priority = "NORMAL"
2294
gnutls.priority_set_direct(session._c_object,
2295
priority.encode("utf-8"),
2296
None)
2297
1500
(gnutls.library.functions
1501
.gnutls_priority_set_direct(session._c_object,
1502
priority, None))
1503
2298
1504
# Start communication using the Mandos protocol
2299
1505
# Get protocol number
2300
1506
line = self.request.makefile().readline()
2301
1507
logger.debug("Protocol version: %r", line)
2302
1508
try:
2303
1509
if int(line.strip().split()[0]) > 1:
2304
raise RuntimeError(line)
1510
raise RuntimeError
2305
1511
except (ValueError, IndexError, RuntimeError) as error:
2306
1512
logger.error("Unknown protocol version: %s", error)
2307
1513
return
2308
1514
2309
1515
# Start GnuTLS connection
2310
1516
try:
2311
1517
session.handshake()
2312
except gnutls.Error as error:
1518
except gnutls.errors.GNUTLSError as error:
2313
1519
logger.warning("Handshake failed: %s", error)
2314
1520
# Do not run session.bye() here: the session is not
2315
1521
# established. Just abandon the request.
2316
1522
return
2317
1523
logger.debug("Handshake succeeded")
2318
1524
2319
1525
approval_required = False
2320
1526
try:
2321
if gnutls.has_rawpk:
2322
fpr = b""
2323
try:
2324
key_id = self.key_id(
2325
self.peer_certificate(session))
2326
except (TypeError, gnutls.Error) as error:
2327
logger.warning("Bad certificate: %s", error)
2328
return
2329
logger.debug("Key ID: %s", key_id)
2330
2331
else:
2332
key_id = b""
2333
try:
2334
fpr = self.fingerprint(
2335
self.peer_certificate(session))
2336
except (TypeError, gnutls.Error) as error:
2337
logger.warning("Bad certificate: %s", error)
2338
return
2339
logger.debug("Fingerprint: %s", fpr)
2340
2341
try:
2342
client = ProxyClient(child_pipe, key_id, fpr,
1527
try:
1528
fpr = self.fingerprint(self.peer_certificate
1529
(session))
1530
except (TypeError,
1531
gnutls.errors.GNUTLSError) as error:
1532
logger.warning("Bad certificate: %s", error)
1533
return
1534
logger.debug("Fingerprint: %s", fpr)
1535
1536
try:
1537
client = ProxyClient(child_pipe, fpr,
2343
1538
self.client_address)
2344
1539
except KeyError:
2345
1540
return
2346
1541
1542
if self.server.use_dbus:
1543
# Emit D-Bus signal
1544
client.NewRequest(str(self.client_address))
1545
2347
1546
if client.approval_delay:
2348
1547
delay = client.approval_delay
2349
1548
client.approvals_pending += 1
2350
1549
approval_required = True
2351
1550
2352
1551
while True:
2353
1552
if not client.enabled:
2354
1553
logger.info("Client %s is disabled",
2355
client.name)
1554
client.name)
2356
1555
if self.server.use_dbus:
2357
1556
# Emit D-Bus signal
2358
1557
client.Rejected("Disabled")
2359
1558
return
2360
1559
2361
1560
if client.approved or not client.approval_delay:
2362
# We are approved or approval is disabled
1561
#We are approved or approval is disabled
2363
1562
break
2364
1563
elif client.approved is None:
2365
1564
logger.info("Client %s needs approval",
2367
1566
if self.server.use_dbus:
2368
1567
# Emit D-Bus signal
2369
1568
client.NeedApproval(
2370
client.approval_delay.total_seconds()
2371
* 1000, client.approved_by_default)
1569
client.approval_delay_milliseconds(),
1570
client.approved_by_default)
2372
1571
else:
2373
1572
logger.warning("Client %s was not approved",
2374
1573
client.name)
2376
1575
# Emit D-Bus signal
2377
1576
client.Rejected("Denied")
2378
1577
return
2379
2380
# wait until timeout or approved
1578
1579
#wait until timeout or approved
2381
1580
time = datetime.datetime.now()
2382
1581
client.changedstate.acquire()
2383
client.changedstate.wait(delay.total_seconds())
1582
(client.changedstate.wait
1583
(float(client.timedelta_to_milliseconds(delay)
1584
/ 1000)))
2384
1585
client.changedstate.release()
2385
1586
time2 = datetime.datetime.now()
2386
1587
if (time2 - time) >= delay:
2396
1597
break
2397
1598
else:
2398
1599
delay -= time2 - time
2399
2400
try:
2401
session.send(client.secret)
2402
except gnutls.Error as error:
2403
logger.warning("gnutls send failed",
2404
exc_info=error)
2405
return
2406
1600
1601
sent_size = 0
1602
while sent_size < len(client.secret):
1603
try:
1604
sent = session.send(client.secret[sent_size:])
1605
except gnutls.errors.GNUTLSError as error:
1606
logger.warning("gnutls send failed")
1607
return
1608
logger.debug("Sent: %d, remaining: %d",
1609
sent, len(client.secret)
1610
- (sent_size + sent))
1611
sent_size += sent
1612
2407
1613
logger.info("Sending secret to %s", client.name)
2408
1614
# bump the timeout using extended_timeout
2409
client.bump_timeout(client.extended_timeout)
1615
client.checked_ok(client.extended_timeout)
2410
1616
if self.server.use_dbus:
2411
1617
# Emit D-Bus signal
2412
1618
client.GotSecret()
2413
1619
2414
1620
finally:
2415
1621
if approval_required:
2416
1622
client.approvals_pending -= 1
2417
1623
try:
2418
1624
session.bye()
2419
except gnutls.Error as error:
2420
logger.warning("GnuTLS bye failed",
2421
exc_info=error)
2422
1625
except gnutls.errors.GNUTLSError as error:
1626
logger.warning("GnuTLS bye failed")
1627
2423
1628
@staticmethod
2424
1629
def peer_certificate(session):
2425
"Return the peer's certificate as a bytestring"
2426
try:
2427
cert_type = gnutls.certificate_type_get2(session._c_object,
2428
gnutls.CTYPE_PEERS)
2429
except AttributeError:
2430
cert_type = gnutls.certificate_type_get(session._c_object)
2431
if gnutls.has_rawpk:
2432
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2433
else:
2434
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2435
# If not a valid certificate type...
2436
if cert_type not in valid_cert_types:
2437
logger.info("Cert type %r not in %r", cert_type,
2438
valid_cert_types)
2439
# ...return invalid data
2440
return b""
1630
"Return the peer's OpenPGP certificate as a bytestring"
1631
# If not an OpenPGP certificate...
1632
if (gnutls.library.functions
1633
.gnutls_certificate_type_get(session._c_object)
1634
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1635
# ...do the normal thing
1636
return session.peer_certificate
2441
1637
list_size = ctypes.c_uint(1)
2442
cert_list = (gnutls.certificate_get_peers
1638
cert_list = (gnutls.library.functions
1639
.gnutls_certificate_get_peers
2443
1640
(session._c_object, ctypes.byref(list_size)))
2444
1641
if not bool(cert_list) and list_size.value != 0:
2445
raise gnutls.Error("error getting peer certificate")
1642
raise gnutls.errors.GNUTLSError("error getting peer"
1643
" certificate")
2446
1644
if list_size.value == 0:
2447
1645
return None
2448
1646
cert = cert_list[0]
2449
1647
return ctypes.string_at(cert.data, cert.size)
2450
2451
@staticmethod
2452
def key_id(certificate):
2453
"Convert a certificate bytestring to a hexdigit key ID"
2454
# New GnuTLS "datum" with the public key
2455
datum = gnutls.datum_t(
2456
ctypes.cast(ctypes.c_char_p(certificate),
2457
ctypes.POINTER(ctypes.c_ubyte)),
2458
ctypes.c_uint(len(certificate)))
2459
# XXX all these need to be created in the gnutls "module"
2460
# New empty GnuTLS certificate
2461
pubkey = gnutls.pubkey_t()
2462
gnutls.pubkey_init(ctypes.byref(pubkey))
2463
# Import the raw public key into the certificate
2464
gnutls.pubkey_import(pubkey,
2465
ctypes.byref(datum),
2466
gnutls.X509_FMT_DER)
2467
# New buffer for the key ID
2468
buf = ctypes.create_string_buffer(32)
2469
buf_len = ctypes.c_size_t(len(buf))
2470
# Get the key ID from the raw public key into the buffer
2471
gnutls.pubkey_get_key_id(pubkey,
2472
gnutls.KEYID_USE_SHA256,
2473
ctypes.cast(ctypes.byref(buf),
2474
ctypes.POINTER(ctypes.c_ubyte)),
2475
ctypes.byref(buf_len))
2476
# Deinit the certificate
2477
gnutls.pubkey_deinit(pubkey)
2478
2479
# Convert the buffer to a Python bytestring
2480
key_id = ctypes.string_at(buf, buf_len.value)
2481
# Convert the bytestring to hexadecimal notation
2482
hex_key_id = binascii.hexlify(key_id).upper()
2483
return hex_key_id
2484
1648
2485
1649
@staticmethod
2486
1650
def fingerprint(openpgp):
2487
1651
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2488
1652
# New GnuTLS "datum" with the OpenPGP public key
2489
datum = gnutls.datum_t(
2490
ctypes.cast(ctypes.c_char_p(openpgp),
2491
ctypes.POINTER(ctypes.c_ubyte)),
2492
ctypes.c_uint(len(openpgp)))
1653
datum = (gnutls.library.types
1654
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1655
ctypes.POINTER
1656
(ctypes.c_ubyte)),
1657
ctypes.c_uint(len(openpgp))))
2493
1658
# New empty GnuTLS certificate
2494
crt = gnutls.openpgp_crt_t()
2495
gnutls.openpgp_crt_init(ctypes.byref(crt))
1659
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1660
(gnutls.library.functions
1661
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2496
1662
# Import the OpenPGP public key into the certificate
2497
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2498
gnutls.OPENPGP_FMT_RAW)
1663
(gnutls.library.functions
1664
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1665
gnutls.library.constants
1666
.GNUTLS_OPENPGP_FMT_RAW))
2499
1667
# Verify the self signature in the key
2500
1668
crtverify = ctypes.c_uint()
2501
gnutls.openpgp_crt_verify_self(crt, 0,
2502
ctypes.byref(crtverify))
1669
(gnutls.library.functions
1670
.gnutls_openpgp_crt_verify_self(crt, 0,
1671
ctypes.byref(crtverify)))
2503
1672
if crtverify.value != 0:
2504
gnutls.openpgp_crt_deinit(crt)
2505
raise gnutls.CertificateSecurityError(code
2506
=crtverify.value)
1673
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1674
raise (gnutls.errors.CertificateSecurityError
1675
("Verify failed"))
2507
1676
# New buffer for the fingerprint
2508
1677
buf = ctypes.create_string_buffer(20)
2509
1678
buf_len = ctypes.c_size_t()
2510
1679
# Get the fingerprint from the certificate into the buffer
2511
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2512
ctypes.byref(buf_len))
1680
(gnutls.library.functions
1681
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1682
ctypes.byref(buf_len)))
2513
1683
# Deinit the certificate
2514
gnutls.openpgp_crt_deinit(crt)
1684
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2515
1685
# Convert the buffer to a Python bytestring
2516
1686
fpr = ctypes.string_at(buf, buf_len.value)
2517
1687
# Convert the bytestring to hexadecimal notation
2519
1689
return hex_fpr
2520
1690
2521
1691
2522
class MultiprocessingMixIn:
1692
class MultiprocessingMixIn(object):
2523
1693
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2524
2525
1694
def sub_process_main(self, request, address):
2526
1695
try:
2527
1696
self.finish_request(request, address)
2528
1697
except Exception:
2529
1698
self.handle_error(request, address)
2530
1699
self.close_request(request)
2531
1700
2532
1701
def process_request(self, request, address):
2533
1702
"""Start a new process to process the request."""
2534
proc = multiprocessing.Process(target=self.sub_process_main,
2535
args=(request, address))
1703
proc = multiprocessing.Process(target = self.sub_process_main,
1704
args = (request,
1705
address))
2536
1706
proc.start()
2537
1707
return proc
2538
1708
2539
1709
2540
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1710
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2541
1711
""" adds a pipe to the MixIn """
2542
2543
1712
def process_request(self, request, client_address):
2544
1713
"""Overrides and wraps the original process_request().
2545
1714
2546
1715
This function creates a new pipe in self.pipe
2547
1716
"""
2548
1717
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2549
1718
2550
1719
proc = MultiprocessingMixIn.process_request(self, request,
2551
1720
client_address)
2552
1721
self.child_pipe.close()
2553
1722
self.add_pipe(parent_pipe, proc)
2554
1723
2555
1724
def add_pipe(self, parent_pipe, proc):
2556
1725
"""Dummy function; override as necessary"""
2557
raise NotImplementedError()
1726
raise NotImplementedError
2558
1727
2559
1728
2560
1729
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2561
socketserver.TCPServer):
1730
socketserver.TCPServer, object):
2562
1731
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2563
1732
2564
1733
Attributes:
2565
1734
enabled: Boolean; whether this server is activated yet
2566
1735
interface: None or a network interface name (string)
2567
1736
use_ipv6: Boolean; to use IPv6 or not
2568
1737
"""
2569
2570
1738
def __init__(self, server_address, RequestHandlerClass,
2571
interface=None,
2572
use_ipv6=True,
2573
socketfd=None):
2574
"""If socketfd is set, use that file descriptor instead of
2575
creating a new one with socket.socket().
2576
"""
1739
interface=None, use_ipv6=True):
2577
1740
self.interface = interface
2578
1741
if use_ipv6:
2579
1742
self.address_family = socket.AF_INET6
2580
if socketfd is not None:
2581
# Save the file descriptor
2582
self.socketfd = socketfd
2583
# Save the original socket.socket() function
2584
self.socket_socket = socket.socket
2585
2586
# To implement --socket, we monkey patch socket.socket.
2587
#
2588
# (When socketserver.TCPServer is a new-style class, we
2589
# could make self.socket into a property instead of monkey
2590
# patching socket.socket.)
2591
#
2592
# Create a one-time-only replacement for socket.socket()
2593
@functools.wraps(socket.socket)
2594
def socket_wrapper(*args, **kwargs):
2595
# Restore original function so subsequent calls are
2596
# not affected.
2597
socket.socket = self.socket_socket
2598
del self.socket_socket
2599
# This time only, return a new socket object from the
2600
# saved file descriptor.
2601
return socket.fromfd(self.socketfd, *args, **kwargs)
2602
# Replace socket.socket() function with wrapper
2603
socket.socket = socket_wrapper
2604
# The socketserver.TCPServer.__init__ will call
2605
# socket.socket(), which might be our replacement,
2606
# socket_wrapper(), if socketfd was set.
2607
1743
socketserver.TCPServer.__init__(self, server_address,
2608
1744
RequestHandlerClass)
2609
2610
1745
def server_bind(self):
2611
1746
"""This overrides the normal server_bind() function
2612
1747
to bind to an interface if one was specified, and also NOT to
2613
1748
bind to an address or port if they were not specified."""
2614
global SO_BINDTODEVICE
2615
1749
if self.interface is not None:
2616
1750
if SO_BINDTODEVICE is None:
2617
# Fall back to a hard-coded value which seems to be
2618
# common enough.
2619
logger.warning("SO_BINDTODEVICE not found, trying 25")
2620
SO_BINDTODEVICE = 25
2621
try:
2622
self.socket.setsockopt(
2623
socket.SOL_SOCKET, SO_BINDTODEVICE,
2624
(self.interface + "\0").encode("utf-8"))
2625
except socket.error as error:
2626
if error.errno == errno.EPERM:
2627
logger.error("No permission to bind to"
2628
" interface %s", self.interface)
2629
elif error.errno == errno.ENOPROTOOPT:
2630
logger.error("SO_BINDTODEVICE not available;"
2631
" cannot bind to interface %s",
2632
self.interface)
2633
elif error.errno == errno.ENODEV:
2634
logger.error("Interface %s does not exist,"
2635
" cannot bind", self.interface)
2636
else:
2637
raise
1751
logger.error("SO_BINDTODEVICE does not exist;"
1752
" cannot bind to interface %s",
1753
self.interface)
1754
else:
1755
try:
1756
self.socket.setsockopt(socket.SOL_SOCKET,
1757
SO_BINDTODEVICE,
1758
str(self.interface
1759
+ '\0'))
1760
except socket.error as error:
1761
if error[0] == errno.EPERM:
1762
logger.error("No permission to"
1763
" bind to interface %s",
1764
self.interface)
1765
elif error[0] == errno.ENOPROTOOPT:
1766
logger.error("SO_BINDTODEVICE not available;"
1767
" cannot bind to interface %s",
1768
self.interface)
1769
else:
1770
raise
2638
1771
# Only bind(2) the socket if we really need to.
2639
1772
if self.server_address[0] or self.server_address[1]:
2640
if self.server_address[1]:
2641
self.allow_reuse_address = True
2642
1773
if not self.server_address[0]:
2643
1774
if self.address_family == socket.AF_INET6:
2644
any_address = "::" # in6addr_any
1775
any_address = "::" # in6addr_any
2645
1776
else:
2646
any_address = "0.0.0.0" # INADDR_ANY
1777
any_address = socket.INADDR_ANY
2647
1778
self.server_address = (any_address,
2648
1779
self.server_address[1])
2649
1780
elif not self.server_address[1]:
2650
self.server_address = (self.server_address[0], 0)
1781
self.server_address = (self.server_address[0],
1782
0)
2651
1783
# if self.interface:
2652
1784
# self.server_address = (self.server_address[0],
2653
1785
# 0, # port
2659
1791
2660
1792
class MandosServer(IPv6_TCPServer):
2661
1793
"""Mandos server.
2662
1794
2663
1795
Attributes:
2664
1796
clients: set of Client objects
2665
1797
gnutls_priority GnuTLS priority string
2666
1798
use_dbus: Boolean; to emit D-Bus signals or not
2667
2668
Assumes a GLib.MainLoop event loop.
1799
1800
Assumes a gobject.MainLoop event loop.
2669
1801
"""
2670
2671
1802
def __init__(self, server_address, RequestHandlerClass,
2672
interface=None,
2673
use_ipv6=True,
2674
clients=None,
2675
gnutls_priority=None,
2676
use_dbus=True,
2677
socketfd=None):
1803
interface=None, use_ipv6=True, clients=None,
1804
gnutls_priority=None, use_dbus=True):
2678
1805
self.enabled = False
2679
1806
self.clients = clients
2680
1807
if self.clients is None:
2683
1810
self.gnutls_priority = gnutls_priority
2684
1811
IPv6_TCPServer.__init__(self, server_address,
2685
1812
RequestHandlerClass,
2686
interface=interface,
2687
use_ipv6=use_ipv6,
2688
socketfd=socketfd)
2689
1813
interface = interface,
1814
use_ipv6 = use_ipv6)
2690
1815
def server_activate(self):
2691
1816
if self.enabled:
2692
1817
return socketserver.TCPServer.server_activate(self)
2693
1818
2694
1819
def enable(self):
2695
1820
self.enabled = True
2696
1821
2697
1822
def add_pipe(self, parent_pipe, proc):
2698
1823
# Call "handle_ipc" for both data and EOF events
2699
GLib.io_add_watch(
2700
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2701
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2702
functools.partial(self.handle_ipc,
2703
parent_pipe=parent_pipe,
2704
proc=proc))
2705
2706
def handle_ipc(self, source, condition,
2707
parent_pipe=None,
2708
proc=None,
2709
client_object=None):
1824
gobject.io_add_watch(parent_pipe.fileno(),
1825
gobject.IO_IN | gobject.IO_HUP,
1826
functools.partial(self.handle_ipc,
1827
parent_pipe =
1828
parent_pipe,
1829
proc = proc))
1830
1831
def handle_ipc(self, source, condition, parent_pipe=None,
1832
proc = None, client_object=None):
1833
condition_names = {
1834
gobject.IO_IN: "IN", # There is data to read.
1835
gobject.IO_OUT: "OUT", # Data can be written (without
1836
# blocking).
1837
gobject.IO_PRI: "PRI", # There is urgent data to read.
1838
gobject.IO_ERR: "ERR", # Error condition.
1839
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1840
# broken, usually for pipes and
1841
# sockets).
1842
}
1843
conditions_string = ' | '.join(name
1844
for cond, name in
1845
condition_names.iteritems()
1846
if cond & condition)
2710
1847
# error, or the other end of multiprocessing.Pipe has closed
2711
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1848
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2712
1849
# Wait for other process to exit
2713
1850
proc.join()
2714
1851
return False
2715
1852
2716
1853
# Read a request from the child
2717
1854
request = parent_pipe.recv()
2718
1855
command = request[0]
2719
1856
2720
1857
if command == 'init':
2721
key_id = request[1].decode("ascii")
2722
fpr = request[2].decode("ascii")
2723
address = request[3]
2724
2725
for c in self.clients.values():
2726
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2727
continue
2728
if key_id and c.key_id == key_id:
2729
client = c
2730
break
2731
if fpr and c.fingerprint == fpr:
1858
fpr = request[1]
1859
address = request[2]
1860
1861
for c in self.clients.itervalues():
1862
if c.fingerprint == fpr:
2732
1863
client = c
2733
1864
break
2734
1865
else:
2735
logger.info("Client not found for key ID: %s, address"
2736
": %s", key_id or fpr, address)
1866
logger.info("Client not found for fingerprint: %s, ad"
1867
"dress: %s", fpr, address)
2737
1868
if self.use_dbus:
2738
1869
# Emit D-Bus signal
2739
mandos_dbus_service.ClientNotFound(key_id or fpr,
1870
mandos_dbus_service.ClientNotFound(fpr,
2740
1871
address[0])
2741
1872
parent_pipe.send(False)
2742
1873
return False
2743
2744
GLib.io_add_watch(
2745
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2746
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2747
functools.partial(self.handle_ipc,
2748
parent_pipe=parent_pipe,
2749
proc=proc,
2750
client_object=client))
1874
1875
gobject.io_add_watch(parent_pipe.fileno(),
1876
gobject.IO_IN | gobject.IO_HUP,
1877
functools.partial(self.handle_ipc,
1878
parent_pipe =
1879
parent_pipe,
1880
proc = proc,
1881
client_object =
1882
client))
2751
1883
parent_pipe.send(True)
2752
1884
# remove the old hook in favor of the new above hook on
2753
1885
# same fileno
2756
1888
funcname = request[1]
2757
1889
args = request[2]
2758
1890
kwargs = request[3]
2759
1891
2760
1892
parent_pipe.send(('data', getattr(client_object,
2761
1893
funcname)(*args,
2762
**kwargs)))
2763
1894
**kwargs)))
1895
2764
1896
if command == 'getattr':
2765
1897
attrname = request[1]
2766
if isinstance(client_object.__getattribute__(attrname),
2767
collections.abc.Callable):
2768
parent_pipe.send(('function', ))
1898
if callable(client_object.__getattribute__(attrname)):
1899
parent_pipe.send(('function',))
2769
1900
else:
2770
parent_pipe.send((
2771
'data', client_object.__getattribute__(attrname)))
2772
1901
parent_pipe.send(('data', client_object
1902
.__getattribute__(attrname)))
1903
2773
1904
if command == 'setattr':
2774
1905
attrname = request[1]
2775
1906
value = request[2]
2776
1907
setattr(client_object, attrname, value)
2777
1908
2778
1909
return True
2779
1910
2780
1911
2781
def rfc3339_duration_to_delta(duration):
2782
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2783
2784
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2785
True
2786
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2787
True
2788
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2789
True
2790
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2791
True
2792
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2793
True
2794
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2795
True
2796
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2797
True
2798
"""
2799
2800
# Parsing an RFC 3339 duration with regular expressions is not
2801
# possible - there would have to be multiple places for the same
2802
# values, like seconds. The current code, while more esoteric, is
2803
# cleaner without depending on a parsing library. If Python had a
2804
# built-in library for parsing we would use it, but we'd like to
2805
# avoid excessive use of external libraries.
2806
2807
# New type for defining tokens, syntax, and semantics all-in-one
2808
Token = collections.namedtuple("Token", (
2809
"regexp", # To match token; if "value" is not None, must have
2810
# a "group" containing digits
2811
"value", # datetime.timedelta or None
2812
"followers")) # Tokens valid after this token
2813
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2814
# the "duration" ABNF definition in RFC 3339, Appendix A.
2815
token_end = Token(re.compile(r"$"), None, frozenset())
2816
token_second = Token(re.compile(r"(\d+)S"),
2817
datetime.timedelta(seconds=1),
2818
frozenset((token_end, )))
2819
token_minute = Token(re.compile(r"(\d+)M"),
2820
datetime.timedelta(minutes=1),
2821
frozenset((token_second, token_end)))
2822
token_hour = Token(re.compile(r"(\d+)H"),
2823
datetime.timedelta(hours=1),
2824
frozenset((token_minute, token_end)))
2825
token_time = Token(re.compile(r"T"),
2826
None,
2827
frozenset((token_hour, token_minute,
2828
token_second)))
2829
token_day = Token(re.compile(r"(\d+)D"),
2830
datetime.timedelta(days=1),
2831
frozenset((token_time, token_end)))
2832
token_month = Token(re.compile(r"(\d+)M"),
2833
datetime.timedelta(weeks=4),
2834
frozenset((token_day, token_end)))
2835
token_year = Token(re.compile(r"(\d+)Y"),
2836
datetime.timedelta(weeks=52),
2837
frozenset((token_month, token_end)))
2838
token_week = Token(re.compile(r"(\d+)W"),
2839
datetime.timedelta(weeks=1),
2840
frozenset((token_end, )))
2841
token_duration = Token(re.compile(r"P"), None,
2842
frozenset((token_year, token_month,
2843
token_day, token_time,
2844
token_week)))
2845
# Define starting values:
2846
# Value so far
2847
value = datetime.timedelta()
2848
found_token = None
2849
# Following valid tokens
2850
followers = frozenset((token_duration, ))
2851
# String left to parse
2852
s = duration
2853
# Loop until end token is found
2854
while found_token is not token_end:
2855
# Search for any currently valid tokens
2856
for token in followers:
2857
match = token.regexp.match(s)
2858
if match is not None:
2859
# Token found
2860
if token.value is not None:
2861
# Value found, parse digits
2862
factor = int(match.group(1), 10)
2863
# Add to value so far
2864
value += factor * token.value
2865
# Strip token from string
2866
s = token.regexp.sub("", s, 1)
2867
# Go to found token
2868
found_token = token
2869
# Set valid next tokens
2870
followers = found_token.followers
2871
break
2872
else:
2873
# No currently valid tokens were found
2874
raise ValueError("Invalid RFC 3339 duration: {!r}"
2875
.format(duration))
2876
# End token found
2877
return value
2878
2879
2880
1912
def string_to_delta(interval):
2881
1913
"""Parse a string and return a datetime.timedelta
2882
2883
>>> string_to_delta('7d') == datetime.timedelta(7)
2884
True
2885
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2886
True
2887
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2888
True
2889
>>> string_to_delta('24h') == datetime.timedelta(1)
2890
True
2891
>>> string_to_delta('1w') == datetime.timedelta(7)
2892
True
2893
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2894
True
1914
1915
>>> string_to_delta('7d')
1916
datetime.timedelta(7)
1917
>>> string_to_delta('60s')
1918
datetime.timedelta(0, 60)
1919
>>> string_to_delta('60m')
1920
datetime.timedelta(0, 3600)
1921
>>> string_to_delta('24h')
1922
datetime.timedelta(1)
1923
>>> string_to_delta('1w')
1924
datetime.timedelta(7)
1925
>>> string_to_delta('5m 30s')
1926
datetime.timedelta(0, 330)
2895
1927
"""
2896
2897
try:
2898
return rfc3339_duration_to_delta(interval)
2899
except ValueError:
2900
pass
2901
2902
1928
timevalue = datetime.timedelta(0)
2903
1929
for s in interval.split():
2904
1930
try:
2905
suffix = s[-1]
1931
suffix = unicode(s[-1])
2906
1932
value = int(s[:-1])
2907
1933
if suffix == "d":
2908
1934
delta = datetime.timedelta(value)
2915
1941
elif suffix == "w":
2916
1942
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2917
1943
else:
2918
raise ValueError("Unknown suffix {!r}".format(suffix))
2919
except IndexError as e:
1944
raise ValueError("Unknown suffix %r" % suffix)
1945
except (ValueError, IndexError) as e:
2920
1946
raise ValueError(*(e.args))
2921
1947
timevalue += delta
2922
1948
return timevalue
2923
1949
2924
1950
2925
def daemon(nochdir=False, noclose=False):
1951
def daemon(nochdir = False, noclose = False):
2926
1952
"""See daemon(3). Standard BSD Unix function.
2927
1953
2928
1954
This should really exist as os.daemon, but it doesn't (yet)."""
2929
1955
if os.fork():
2930
1956
sys.exit()
2935
1961
sys.exit()
2936
1962
if not noclose:
2937
1963
# Close all standard open file descriptors
2938
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1964
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2939
1965
if not stat.S_ISCHR(os.fstat(null).st_mode):
2940
1966
raise OSError(errno.ENODEV,
2941
"{} not a character device"
2942
.format(os.devnull))
1967
"%s not a character device"
1968
% os.path.devnull)
2943
1969
os.dup2(null, sys.stdin.fileno())
2944
1970
os.dup2(null, sys.stdout.fileno())
2945
1971
os.dup2(null, sys.stderr.fileno())
2948
1974
2949
1975
2950
1976
def main():
2951
1977
2952
1978
##################################################################
2953
1979
# Parsing of options, both command line and config file
2954
1980
2955
1981
parser = argparse.ArgumentParser()
2956
1982
parser.add_argument("-v", "--version", action="version",
2957
version="%(prog)s {}".format(version),
1983
version = "%%(prog)s %s" % version,
2958
1984
help="show version number and exit")
2959
1985
parser.add_argument("-i", "--interface", metavar="IF",
2960
1986
help="Bind to interface IF")
2966
1992
help="Run self-test")
2967
1993
parser.add_argument("--debug", action="store_true",
2968
1994
help="Debug mode; run in foreground and log"
2969
" to terminal", default=None)
1995
" to terminal")
2970
1996
parser.add_argument("--debuglevel", metavar="LEVEL",
2971
1997
help="Debug level for stdout output")
2972
1998
parser.add_argument("--priority", help="GnuTLS"
2979
2005
" files")
2980
2006
parser.add_argument("--no-dbus", action="store_false",
2981
2007
dest="use_dbus", help="Do not provide D-Bus"
2982
" system bus interface", default=None)
2008
" system bus interface")
2983
2009
parser.add_argument("--no-ipv6", action="store_false",
2984
dest="use_ipv6", help="Do not use IPv6",
2985
default=None)
2010
dest="use_ipv6", help="Do not use IPv6")
2986
2011
parser.add_argument("--no-restore", action="store_false",
2987
2012
dest="restore", help="Do not restore stored"
2988
" state", default=None)
2989
parser.add_argument("--socket", type=int,
2990
help="Specify a file descriptor to a network"
2991
" socket to use instead of creating one")
2013
" state")
2992
2014
parser.add_argument("--statedir", metavar="DIR",
2993
2015
help="Directory to save/restore state in")
2994
parser.add_argument("--foreground", action="store_true",
2995
help="Run in foreground", default=None)
2996
parser.add_argument("--no-zeroconf", action="store_false",
2997
dest="zeroconf", help="Do not use Zeroconf",
2998
default=None)
2999
2016
3000
2017
options = parser.parse_args()
3001
2018
2019
if options.check:
2020
import doctest
2021
doctest.testmod()
2022
sys.exit()
2023
3002
2024
# Default values for config file for server-global settings
3003
if gnutls.has_rawpk:
3004
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3005
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3006
else:
3007
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3008
":+SIGN-DSA-SHA256")
3009
server_defaults = {"interface": "",
3010
"address": "",
3011
"port": "",
3012
"debug": "False",
3013
"priority": priority,
3014
"servicename": "Mandos",
3015
"use_dbus": "True",
3016
"use_ipv6": "True",
3017
"debuglevel": "",
3018
"restore": "True",
3019
"socket": "",
3020
"statedir": "/var/lib/mandos",
3021
"foreground": "False",
3022
"zeroconf": "True",
3023
}
3024
del priority
3025
2025
server_defaults = { "interface": "",
2026
"address": "",
2027
"port": "",
2028
"debug": "False",
2029
"priority":
2030
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2031
"servicename": "Mandos",
2032
"use_dbus": "True",
2033
"use_ipv6": "True",
2034
"debuglevel": "",
2035
"restore": "True",
2036
"statedir": "/var/lib/mandos"
2037
}
2038
3026
2039
# Parse config file for server-global settings
3027
server_config = configparser.ConfigParser(server_defaults)
2040
server_config = configparser.SafeConfigParser(server_defaults)
3028
2041
del server_defaults
3029
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3030
# Convert the ConfigParser object to a dict
2042
server_config.read(os.path.join(options.configdir,
2043
"mandos.conf"))
2044
# Convert the SafeConfigParser object to a dict
3031
2045
server_settings = server_config.defaults()
3032
2046
# Use the appropriate methods on the non-string config options
3033
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3034
"foreground", "zeroconf"):
2047
for option in ("debug", "use_dbus", "use_ipv6"):
3035
2048
server_settings[option] = server_config.getboolean("DEFAULT",
3036
2049
option)
3037
2050
if server_settings["port"]:
3038
2051
server_settings["port"] = server_config.getint("DEFAULT",
3039
2052
"port")
3040
if server_settings["socket"]:
3041
server_settings["socket"] = server_config.getint("DEFAULT",
3042
"socket")
3043
# Later, stdin will, and stdout and stderr might, be dup'ed
3044
# over with an opened os.devnull. But we don't want this to
3045
# happen with a supplied network socket.
3046
if 0 <= server_settings["socket"] <= 2:
3047
server_settings["socket"] = os.dup(server_settings
3048
["socket"])
3049
2053
del server_config
3050
2054
3051
2055
# Override the settings from the config file with command line
3052
2056
# options, if set.
3053
2057
for option in ("interface", "address", "port", "debug",
3054
"priority", "servicename", "configdir", "use_dbus",
3055
"use_ipv6", "debuglevel", "restore", "statedir",
3056
"socket", "foreground", "zeroconf"):
2058
"priority", "servicename", "configdir",
2059
"use_dbus", "use_ipv6", "debuglevel", "restore",
2060
"statedir"):
3057
2061
value = getattr(options, option)
3058
2062
if value is not None:
3059
2063
server_settings[option] = value
3060
2064
del options
3061
2065
# Force all strings to be unicode
3062
2066
for option in server_settings.keys():
3063
if isinstance(server_settings[option], bytes):
3064
server_settings[option] = (server_settings[option]
3065
.decode("utf-8"))
3066
# Force all boolean options to be boolean
3067
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3068
"foreground", "zeroconf"):
3069
server_settings[option] = bool(server_settings[option])
3070
# Debug implies foreground
3071
if server_settings["debug"]:
3072
server_settings["foreground"] = True
2067
if type(server_settings[option]) is str:
2068
server_settings[option] = unicode(server_settings[option])
3073
2069
# Now we have our good server settings in "server_settings"
3074
2070
3075
2071
##################################################################
3076
3077
if (not server_settings["zeroconf"]
3078
and not (server_settings["port"]
3079
or server_settings["socket"] != "")):
3080
parser.error("Needs port or socket to work without Zeroconf")
3081
2072
3082
2073
# For convenience
3083
2074
debug = server_settings["debug"]
3084
2075
debuglevel = server_settings["debuglevel"]
3086
2077
use_ipv6 = server_settings["use_ipv6"]
3087
2078
stored_state_path = os.path.join(server_settings["statedir"],
3088
2079
stored_state_file)
3089
foreground = server_settings["foreground"]
3090
zeroconf = server_settings["zeroconf"]
3091
2080
3092
2081
if debug:
3093
2082
initlogger(debug, logging.DEBUG)
3094
2083
else:
3097
2086
else:
3098
2087
level = getattr(logging, debuglevel.upper())
3099
2088
initlogger(debug, level)
3100
2089
3101
2090
if server_settings["servicename"] != "Mandos":
3102
syslogger.setFormatter(
3103
logging.Formatter('Mandos ({}) [%(process)d]:'
3104
' %(levelname)s: %(message)s'.format(
3105
server_settings["servicename"])))
3106
2091
syslogger.setFormatter(logging.Formatter
2092
('Mandos (%s) [%%(process)d]:'
2093
' %%(levelname)s: %%(message)s'
2094
% server_settings["servicename"]))
2095
3107
2096
# Parse config file with clients
3108
client_config = configparser.ConfigParser(Client.client_defaults)
2097
client_config = configparser.SafeConfigParser(Client.client_defaults)
3109
2098
client_config.read(os.path.join(server_settings["configdir"],
3110
2099
"clients.conf"))
3111
2100
3112
2101
global mandos_dbus_service
3113
2102
mandos_dbus_service = None
3114
3115
socketfd = None
3116
if server_settings["socket"] != "":
3117
socketfd = server_settings["socket"]
3118
tcp_server = MandosServer(
3119
(server_settings["address"], server_settings["port"]),
3120
ClientHandler,
3121
interface=(server_settings["interface"] or None),
3122
use_ipv6=use_ipv6,
3123
gnutls_priority=server_settings["priority"],
3124
use_dbus=use_dbus,
3125
socketfd=socketfd)
3126
if not foreground:
3127
pidfilename = "/run/mandos.pid"
3128
if not os.path.isdir("/run/."):
3129
pidfilename = "/var/run/mandos.pid"
3130
pidfile = None
3131
try:
3132
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3133
except IOError as e:
3134
logger.error("Could not open file %r", pidfilename,
3135
exc_info=e)
3136
3137
for name, group in (("_mandos", "_mandos"),
3138
("mandos", "mandos"),
3139
("nobody", "nogroup")):
3140
try:
3141
uid = pwd.getpwnam(name).pw_uid
3142
gid = pwd.getpwnam(group).pw_gid
3143
break
2103
2104
tcp_server = MandosServer((server_settings["address"],
2105
server_settings["port"]),
2106
ClientHandler,
2107
interface=(server_settings["interface"]
2108
or None),
2109
use_ipv6=use_ipv6,
2110
gnutls_priority=
2111
server_settings["priority"],
2112
use_dbus=use_dbus)
2113
if not debug:
2114
pidfilename = "/var/run/mandos.pid"
2115
try:
2116
pidfile = open(pidfilename, "w")
2117
except IOError:
2118
logger.error("Could not open file %r", pidfilename)
2119
2120
try:
2121
uid = pwd.getpwnam("_mandos").pw_uid
2122
gid = pwd.getpwnam("_mandos").pw_gid
2123
except KeyError:
2124
try:
2125
uid = pwd.getpwnam("mandos").pw_uid
2126
gid = pwd.getpwnam("mandos").pw_gid
3144
2127
except KeyError:
3145
continue
3146
else:
3147
uid = 65534
3148
gid = 65534
2128
try:
2129
uid = pwd.getpwnam("nobody").pw_uid
2130
gid = pwd.getpwnam("nobody").pw_gid
2131
except KeyError:
2132
uid = 65534
2133
gid = 65534
3149
2134
try:
3150
2135
os.setgid(gid)
3151
2136
os.setuid(uid)
3152
if debug:
3153
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3154
gid))
3155
2137
except OSError as error:
3156
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3157
.format(uid, gid, os.strerror(error.errno)))
3158
if error.errno != errno.EPERM:
3159
raise
3160
2138
if error[0] != errno.EPERM:
2139
raise error
2140
3161
2141
if debug:
3162
2142
# Enable all possible GnuTLS debugging
3163
2143
3164
2144
# "Use a log level over 10 to enable all debugging options."
3165
2145
# - GnuTLS manual
3166
gnutls.global_set_log_level(11)
3167
3168
@gnutls.log_func
2146
gnutls.library.functions.gnutls_global_set_log_level(11)
2147
2148
@gnutls.library.types.gnutls_log_func
3169
2149
def debug_gnutls(level, string):
3170
2150
logger.debug("GnuTLS: %s", string[:-1])
3171
3172
gnutls.global_set_log_function(debug_gnutls)
3173
2151
2152
(gnutls.library.functions
2153
.gnutls_global_set_log_function(debug_gnutls))
2154
3174
2155
# Redirect stdin so all checkers get /dev/null
3175
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2156
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3176
2157
os.dup2(null, sys.stdin.fileno())
3177
2158
if null > 2:
3178
2159
os.close(null)
3179
2160
3180
2161
# Need to fork before connecting to D-Bus
3181
if not foreground:
2162
if not debug:
3182
2163
# Close all input and output, do double fork, etc.
3183
2164
daemon()
3184
3185
if gi.version_info < (3, 10, 2):
3186
# multiprocessing will use threads, so before we use GLib we
3187
# need to inform GLib that threads will be used.
3188
GLib.threads_init()
3189
2165
2166
gobject.threads_init()
2167
3190
2168
global main_loop
3191
2169
# From the Avahi example code
3192
DBusGMainLoop(set_as_default=True)
3193
main_loop = GLib.MainLoop()
2170
DBusGMainLoop(set_as_default=True )
2171
main_loop = gobject.MainLoop()
3194
2172
bus = dbus.SystemBus()
3195
2173
# End of Avahi example code
3196
2174
if use_dbus:
3197
2175
try:
3198
2176
bus_name = dbus.service.BusName("se.recompile.Mandos",
3199
bus,
3200
do_not_queue=True)
3201
old_bus_name = dbus.service.BusName(
3202
"se.bsnet.fukt.Mandos", bus,
3203
do_not_queue=True)
3204
except dbus.exceptions.DBusException as e:
3205
logger.error("Disabling D-Bus:", exc_info=e)
2177
bus, do_not_queue=True)
2178
old_bus_name = (dbus.service.BusName
2179
("se.bsnet.fukt.Mandos", bus,
2180
do_not_queue=True))
2181
except dbus.exceptions.NameExistsException as e:
2182
logger.error(unicode(e) + ", disabling D-Bus")
3206
2183
use_dbus = False
3207
2184
server_settings["use_dbus"] = False
3208
2185
tcp_server.use_dbus = False
3209
if zeroconf:
3210
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3211
service = AvahiServiceToSyslog(
3212
name=server_settings["servicename"],
3213
servicetype="_mandos._tcp",
3214
protocol=protocol,
3215
bus=bus)
3216
if server_settings["interface"]:
3217
service.interface = if_nametoindex(
3218
server_settings["interface"].encode("utf-8"))
3219
2186
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2187
service = AvahiServiceToSyslog(name =
2188
server_settings["servicename"],
2189
servicetype = "_mandos._tcp",
2190
protocol = protocol, bus = bus)
2191
if server_settings["interface"]:
2192
service.interface = (if_nametoindex
2193
(str(server_settings["interface"])))
2194
3220
2195
global multiprocessing_manager
3221
2196
multiprocessing_manager = multiprocessing.Manager()
3222
2197
3223
2198
client_class = Client
3224
2199
if use_dbus:
3225
client_class = functools.partial(ClientDBus, bus=bus)
3226
2200
client_class = functools.partial(ClientDBusTransitional,
2201
bus = bus)
2202
3227
2203
client_settings = Client.config_parser(client_config)
3228
2204
old_client_settings = {}
3229
2205
clients_data = {}
3230
3231
# This is used to redirect stdout and stderr for checker processes
3232
global wnull
3233
wnull = open(os.devnull, "w") # A writable /dev/null
3234
# Only used if server is running in foreground but not in debug
3235
# mode
3236
if debug or not foreground:
3237
wnull.close()
3238
2206
3239
2207
# Get client data and settings from last running state.
3240
2208
if server_settings["restore"]:
3241
2209
try:
3242
2210
with open(stored_state_path, "rb") as stored_state:
3243
if sys.version_info.major == 2:
3244
clients_data, old_client_settings = pickle.load(
3245
stored_state)
3246
else:
3247
bytes_clients_data, bytes_old_client_settings = (
3248
pickle.load(stored_state, encoding="bytes"))
3249
# Fix bytes to strings
3250
# clients_data
3251
# .keys()
3252
clients_data = {(key.decode("utf-8")
3253
if isinstance(key, bytes)
3254
else key): value
3255
for key, value in
3256
bytes_clients_data.items()}
3257
del bytes_clients_data
3258
for key in clients_data:
3259
value = {(k.decode("utf-8")
3260
if isinstance(k, bytes) else k): v
3261
for k, v in
3262
clients_data[key].items()}
3263
clients_data[key] = value
3264
# .client_structure
3265
value["client_structure"] = [
3266
(s.decode("utf-8")
3267
if isinstance(s, bytes)
3268
else s) for s in
3269
value["client_structure"]]
3270
# .name, .host, and .checker_command
3271
for k in ("name", "host", "checker_command"):
3272
if isinstance(value[k], bytes):
3273
value[k] = value[k].decode("utf-8")
3274
if "key_id" not in value:
3275
value["key_id"] = ""
3276
elif "fingerprint" not in value:
3277
value["fingerprint"] = ""
3278
# old_client_settings
3279
# .keys()
3280
old_client_settings = {
3281
(key.decode("utf-8")
3282
if isinstance(key, bytes)
3283
else key): value
3284
for key, value in
3285
bytes_old_client_settings.items()}
3286
del bytes_old_client_settings
3287
# .host and .checker_command
3288
for value in old_client_settings.values():
3289
for attribute in ("host", "checker_command"):
3290
if isinstance(value[attribute], bytes):
3291
value[attribute] = (value[attribute]
3292
.decode("utf-8"))
2211
clients_data, old_client_settings = (pickle.load
2212
(stored_state))
3293
2213
os.remove(stored_state_path)
3294
2214
except IOError as e:
3295
if e.errno == errno.ENOENT:
3296
logger.warning("Could not load persistent state:"
3297
" {}".format(os.strerror(e.errno)))
3298
else:
3299
logger.critical("Could not load persistent state:",
3300
exc_info=e)
2215
logger.warning("Could not load persistent state: {0}"
2216
.format(e))
2217
if e.errno != errno.ENOENT:
3301
2218
raise
3302
2219
except EOFError as e:
3303
2220
logger.warning("Could not load persistent state: "
3304
"EOFError:",
3305
exc_info=e)
3306
2221
"EOFError: {0}".format(e))
2222
3307
2223
with PGPEngine() as pgp:
3308
for client_name, client in clients_data.items():
3309
# Skip removed clients
3310
if client_name not in client_settings:
3311
continue
3312
2224
for client_name, client in clients_data.iteritems():
3313
2225
# Decide which value to use after restoring saved state.
3314
2226
# We have three different values: Old config file,
3315
2227
# new config file, and saved state.
3320
2232
# For each value in new config, check if it
3321
2233
# differs from the old config value (Except for
3322
2234
# the "secret" attribute)
3323
if (name != "secret"
3324
and (value !=
3325
old_client_settings[client_name][name])):
2235
if (name != "secret" and
2236
value != old_client_settings[client_name]
2237
[name]):
3326
2238
client[name] = value
3327
2239
except KeyError:
3328
2240
pass
3329
2241
3330
2242
# Clients who has passed its expire date can still be
3331
# enabled if its last checker was successful. A Client
3332
# whose checker succeeded before we stored its state is
3333
# assumed to have successfully run all checkers during
3334
# downtime.
2243
# enabled if its last checker was successful. Clients
2244
# whose checker failed before we stored its state is
2245
# assumed to have failed all checkers during downtime.
3335
2246
if client["enabled"]:
3336
2247
if datetime.datetime.utcnow() >= client["expires"]:
3337
2248
if not client["last_checked_ok"]:
3338
2249
logger.warning(
3339
"disabling client {} - Client never "
3340
"performed a successful checker".format(
3341
client_name))
2250
"disabling client {0} - Client never "
2251
"performed a successfull checker"
2252
.format(client["name"]))
3342
2253
client["enabled"] = False
3343
2254
elif client["last_checker_status"] != 0:
3344
2255
logger.warning(
3345
"disabling client {} - Client last"
3346
" checker failed with error code"
3347
" {}".format(
3348
client_name,
3349
client["last_checker_status"]))
2256
"disabling client {0} - Client "
2257
"last checker failed with error code {1}"
2258
.format(client["name"],
2259
client["last_checker_status"]))
3350
2260
client["enabled"] = False
3351
2261
else:
3352
client["expires"] = (
3353
datetime.datetime.utcnow()
3354
+ client["timeout"])
3355
logger.debug("Last checker succeeded,"
3356
" keeping {} enabled".format(
3357
client_name))
2262
client["expires"] = (datetime.datetime
2263
.utcnow()
2264
+ client["timeout"])
2265
3358
2266
try:
3359
client["secret"] = pgp.decrypt(
3360
client["encrypted_secret"],
3361
client_settings[client_name]["secret"])
2267
client["secret"] = (
2268
pgp.decrypt(client["encrypted_secret"],
2269
client_settings[client_name]
2270
["secret"]))
3362
2271
except PGPError:
3363
2272
# If decryption fails, we use secret from new settings
3364
logger.debug("Failed to decrypt {} old secret".format(
3365
client_name))
3366
client["secret"] = (client_settings[client_name]
3367
["secret"])
2273
logger.debug("Failed to decrypt {0} old secret"
2274
.format(client_name))
2275
client["secret"] = (
2276
client_settings[client_name]["secret"])
3368
2277
2278
3369
2279
# Add/remove clients based on new changes made to config
3370
for client_name in (set(old_client_settings)
3371
- set(client_settings)):
2280
for client_name in set(old_client_settings) - set(client_settings):
3372
2281
del clients_data[client_name]
3373
for client_name in (set(client_settings)
3374
- set(old_client_settings)):
2282
for client_name in set(client_settings) - set(old_client_settings):
3375
2283
clients_data[client_name] = client_settings[client_name]
3376
2284
3377
# Create all client objects
3378
for client_name, client in clients_data.items():
2285
# Create clients all clients
2286
for client_name, client in clients_data.iteritems():
3379
2287
tcp_server.clients[client_name] = client_class(
3380
name=client_name,
3381
settings=client,
3382
server_settings=server_settings)
3383
2288
name = client_name, settings = client)
2289
3384
2290
if not tcp_server.clients:
3385
2291
logger.warning("No clients defined")
3386
3387
if not foreground:
3388
if pidfile is not None:
3389
pid = os.getpid()
3390
try:
3391
with pidfile:
3392
print(pid, file=pidfile)
3393
except IOError:
3394
logger.error("Could not write to file %r with PID %d",
3395
pidfilename, pid)
3396
del pidfile
2292
2293
if not debug:
2294
try:
2295
with pidfile:
2296
pid = os.getpid()
2297
pidfile.write(str(pid) + "\n".encode("utf-8"))
2298
del pidfile
2299
except IOError:
2300
logger.error("Could not write to file %r with PID %d",
2301
pidfilename, pid)
2302
except NameError:
2303
# "pidfile" was never created
2304
pass
3397
2305
del pidfilename
3398
3399
for termsig in (signal.SIGHUP, signal.SIGTERM):
3400
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3401
lambda: main_loop.quit() and False)
3402
2306
signal.signal(signal.SIGINT, signal.SIG_IGN)
2307
2308
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2309
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2310
3403
2311
if use_dbus:
3404
3405
@alternate_dbus_interfaces(
3406
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3407
class MandosDBusService(DBusObjectWithObjectManager):
2312
class MandosDBusService(dbus.service.Object):
3408
2313
"""A D-Bus proxy object"""
3409
3410
2314
def __init__(self):
3411
2315
dbus.service.Object.__init__(self, bus, "/")
3412
3413
2316
_interface = "se.recompile.Mandos"
3414
2317
3415
2318
@dbus.service.signal(_interface, signature="o")
3416
2319
def ClientAdded(self, objpath):
3417
2320
"D-Bus signal"
3418
2321
pass
3419
2322
3420
2323
@dbus.service.signal(_interface, signature="ss")
3421
def ClientNotFound(self, key_id, address):
2324
def ClientNotFound(self, fingerprint, address):
3422
2325
"D-Bus signal"
3423
2326
pass
3424
3425
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3426
"true"})
2327
3427
2328
@dbus.service.signal(_interface, signature="os")
3428
2329
def ClientRemoved(self, objpath, name):
3429
2330
"D-Bus signal"
3430
2331
pass
3431
3432
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3433
"true"})
2332
3434
2333
@dbus.service.method(_interface, out_signature="ao")
3435
2334
def GetAllClients(self):
3436
2335
"D-Bus method"
3437
return dbus.Array(c.dbus_object_path for c in
3438
tcp_server.clients.values())
3439
3440
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3441
"true"})
2336
return dbus.Array(c.dbus_object_path
2337
for c in
2338
tcp_server.clients.itervalues())
2339
3442
2340
@dbus.service.method(_interface,
3443
2341
out_signature="a{oa{sv}}")
3444
2342
def GetAllClientsWithProperties(self):
3445
2343
"D-Bus method"
3446
2344
return dbus.Dictionary(
3447
{c.dbus_object_path: c.GetAll(
3448
"se.recompile.Mandos.Client")
3449
for c in tcp_server.clients.values()},
2345
((c.dbus_object_path, c.GetAll(""))
2346
for c in tcp_server.clients.itervalues()),
3450
2347
signature="oa{sv}")
3451
2348
3452
2349
@dbus.service.method(_interface, in_signature="o")
3453
2350
def RemoveClient(self, object_path):
3454
2351
"D-Bus method"
3455
for c in tcp_server.clients.values():
2352
for c in tcp_server.clients.itervalues():
3456
2353
if c.dbus_object_path == object_path:
3457
2354
del tcp_server.clients[c.name]
3458
2355
c.remove_from_connection()
3459
# Don't signal the disabling
2356
# Don't signal anything except ClientRemoved
3460
2357
c.disable(quiet=True)
3461
# Emit D-Bus signal for removal
3462
self.client_removed_signal(c)
2358
# Emit D-Bus signal
2359
self.ClientRemoved(object_path, c.name)
3463
2360
return
3464
2361
raise KeyError(object_path)
3465
2362
3466
2363
del _interface
3467
3468
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3469
out_signature="a{oa{sa{sv}}}")
3470
def GetManagedObjects(self):
3471
"""D-Bus method"""
3472
return dbus.Dictionary(
3473
{client.dbus_object_path:
3474
dbus.Dictionary(
3475
{interface: client.GetAll(interface)
3476
for interface in
3477
client._get_all_interface_names()})
3478
for client in tcp_server.clients.values()})
3479
3480
def client_added_signal(self, client):
3481
"""Send the new standard signal and the old signal"""
3482
if use_dbus:
3483
# New standard signal
3484
self.InterfacesAdded(
3485
client.dbus_object_path,
3486
dbus.Dictionary(
3487
{interface: client.GetAll(interface)
3488
for interface in
3489
client._get_all_interface_names()}))
3490
# Old signal
3491
self.ClientAdded(client.dbus_object_path)
3492
3493
def client_removed_signal(self, client):
3494
"""Send the new standard signal and the old signal"""
3495
if use_dbus:
3496
# New standard signal
3497
self.InterfacesRemoved(
3498
client.dbus_object_path,
3499
client._get_all_interface_names())
3500
# Old signal
3501
self.ClientRemoved(client.dbus_object_path,
3502
client.name)
3503
3504
mandos_dbus_service = MandosDBusService()
3505
3506
# Save modules to variables to exempt the modules from being
3507
# unloaded before the function registered with atexit() is run.
3508
mp = multiprocessing
3509
wn = wnull
3510
2364
2365
class MandosDBusServiceTransitional(MandosDBusService):
2366
__metaclass__ = AlternateDBusNamesMetaclass
2367
mandos_dbus_service = MandosDBusServiceTransitional()
2368
3511
2369
def cleanup():
3512
2370
"Cleanup function; run on exit"
3513
if zeroconf:
3514
service.cleanup()
3515
3516
mp.active_children()
3517
wn.close()
2371
service.cleanup()
2372
2373
multiprocessing.active_children()
3518
2374
if not (tcp_server.clients or client_settings):
3519
2375
return
3520
2376
3521
2377
# Store client before exiting. Secrets are encrypted with key
3522
2378
# based on what config file has. If config file is
3523
2379
# removed/edited, old secret will thus be unrecovable.
3524
2380
clients = {}
3525
2381
with PGPEngine() as pgp:
3526
for client in tcp_server.clients.values():
2382
for client in tcp_server.clients.itervalues():
3527
2383
key = client_settings[client.name]["secret"]
3528
2384
client.encrypted_secret = pgp.encrypt(client.secret,
3529
2385
key)
3530
2386
client_dict = {}
3531
2387
3532
2388
# A list of attributes that can not be pickled
3533
2389
# + secret.
3534
exclude = {"bus", "changedstate", "secret",
3535
"checker", "server_settings"}
3536
for name, typ in inspect.getmembers(dbus.service
3537
.Object):
2390
exclude = set(("bus", "changedstate", "secret",
2391
"checker"))
2392
for name, typ in (inspect.getmembers
2393
(dbus.service.Object)):
3538
2394
exclude.add(name)
3539
2395
3540
2396
client_dict["encrypted_secret"] = (client
3541
2397
.encrypted_secret)
3542
2398
for attr in client.client_structure:
3543
2399
if attr not in exclude:
3544
2400
client_dict[attr] = getattr(client, attr)
3545
2401
3546
2402
clients[client.name] = client_dict
3547
2403
del client_settings[client.name]["secret"]
3548
2404
3549
2405
try:
3550
with tempfile.NamedTemporaryFile(
3551
mode='wb',
3552
suffix=".pickle",
3553
prefix='clients-',
3554
dir=os.path.dirname(stored_state_path),
3555
delete=False) as stored_state:
3556
pickle.dump((clients, client_settings), stored_state,
3557
protocol=2)
3558
tempname = stored_state.name
2406
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2407
prefix="clients-",
2408
dir=os.path.dirname
2409
(stored_state_path))
2410
with os.fdopen(tempfd, "wb") as stored_state:
2411
pickle.dump((clients, client_settings), stored_state)
3559
2412
os.rename(tempname, stored_state_path)
3560
2413
except (IOError, OSError) as e:
2414
logger.warning("Could not save persistent state: {0}"
2415
.format(e))
3561
2416
if not debug:
3562
2417
try:
3563
2418
os.remove(tempname)
3564
2419
except NameError:
3565
2420
pass
3566
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3567
logger.warning("Could not save persistent state: {}"
3568
.format(os.strerror(e.errno)))
3569
else:
3570
logger.warning("Could not save persistent state:",
3571
exc_info=e)
3572
raise
3573
2421
if e.errno not in set((errno.ENOENT, errno.EACCES,
2422
errno.EEXIST)):
2423
raise e
2424
3574
2425
# Delete all clients, and settings from config
3575
2426
while tcp_server.clients:
3576
2427
name, client = tcp_server.clients.popitem()
3577
2428
if use_dbus:
3578
2429
client.remove_from_connection()
3579
# Don't signal the disabling
2430
# Don't signal anything except ClientRemoved
3580
2431
client.disable(quiet=True)
3581
# Emit D-Bus signal for removal
3582
2432
if use_dbus:
3583
mandos_dbus_service.client_removed_signal(client)
2433
# Emit D-Bus signal
2434
mandos_dbus_service.ClientRemoved(client
2435
.dbus_object_path,
2436
client.name)
3584
2437
client_settings.clear()
3585
2438
3586
2439
atexit.register(cleanup)
3587
3588
for client in tcp_server.clients.values():
2440
2441
for client in tcp_server.clients.itervalues():
3589
2442
if use_dbus:
3590
# Emit D-Bus signal for adding
3591
mandos_dbus_service.client_added_signal(client)
2443
# Emit D-Bus signal
2444
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3592
2445
# Need to initiate checking of clients
3593
2446
if client.enabled:
3594
2447
client.init_checker()
3595
2448
3596
2449
tcp_server.enable()
3597
2450
tcp_server.server_activate()
3598
2451
3599
2452
# Find out what port we got
3600
if zeroconf:
3601
service.port = tcp_server.socket.getsockname()[1]
2453
service.port = tcp_server.socket.getsockname()[1]
3602
2454
if use_ipv6:
3603
2455
logger.info("Now listening on address %r, port %d,"
3604
" flowinfo %d, scope_id %d",
3605
*tcp_server.socket.getsockname())
2456
" flowinfo %d, scope_id %d"
2457
% tcp_server.socket.getsockname())
3606
2458
else: # IPv4
3607
logger.info("Now listening on address %r, port %d",
3608
*tcp_server.socket.getsockname())
3609
3610
# service.interface = tcp_server.socket.getsockname()[3]
3611
2459
logger.info("Now listening on address %r, port %d"
2460
% tcp_server.socket.getsockname())
2461
2462
#service.interface = tcp_server.socket.getsockname()[3]
2463
3612
2464
try:
3613
if zeroconf:
3614
# From the Avahi example code
3615
try:
3616
service.activate()
3617
except dbus.exceptions.DBusException as error:
3618
logger.critical("D-Bus Exception", exc_info=error)
3619
cleanup()
3620
sys.exit(1)
3621
# End of Avahi example code
3622
3623
GLib.io_add_watch(
3624
GLib.IOChannel.unix_new(tcp_server.fileno()),
3625
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3626
lambda *args, **kwargs: (tcp_server.handle_request
3627
(*args[2:], **kwargs) or True))
3628
2465
# From the Avahi example code
2466
try:
2467
service.activate()
2468
except dbus.exceptions.DBusException as error:
2469
logger.critical("DBusException: %s", error)
2470
cleanup()
2471
sys.exit(1)
2472
# End of Avahi example code
2473
2474
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2475
lambda *args, **kwargs:
2476
(tcp_server.handle_request
2477
(*args[2:], **kwargs) or True))
2478
3629
2479
logger.debug("Starting main loop")
3630
2480
main_loop.run()
3631
2481
except AvahiError as error:
3632
logger.critical("Avahi Error", exc_info=error)
2482
logger.critical("AvahiError: %s", error)
3633
2483
cleanup()
3634
2484
sys.exit(1)
3635
2485
except KeyboardInterrupt:
3640
2490
# Must run before the D-Bus bus name gets deregistered
3641
2491
cleanup()
3642
2492
3643
3644
def should_only_run_tests():
3645
parser = argparse.ArgumentParser(add_help=False)
3646
parser.add_argument("--check", action='store_true')
3647
args, unknown_args = parser.parse_known_args()
3648
run_tests = args.check
3649
if run_tests:
3650
# Remove --check argument from sys.argv
3651
sys.argv[1:] = unknown_args
3652
return run_tests
3653
3654
# Add all tests from doctest strings
3655
def load_tests(loader, tests, none):
3656
import doctest
3657
tests.addTests(doctest.DocTestSuite())
3658
return tests
3659
3660
2493
if __name__ == '__main__':
3661
try:
3662
if should_only_run_tests():
3663
# Call using ./mandos --check [--verbose]
3664
unittest.main()
3665
else:
3666
main()
3667
finally:
3668
logging.shutdown()
2494
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0