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  • Committer: Teddy Hogeborn
  • Date: 2018-08-19 14:58:40 UTC
  • Revision ID: teddy@recompile.se-20180819145840-s1a3xar41lyoq4ty
Set executable permissions on new files

* initramfs-tools-script-stop: Did "chmod +x".
* mandos-to-cryptroot-unlock: - '' -

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Lines of Context:
1
 
#!/usr/bin/python3 -bI
2
 
# -*- coding: utf-8; lexical-binding: t -*-
 
1
#!/usr/bin/python
 
2
# -*- mode: python; coding: utf-8 -*-
3
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
5
#
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
 
14
# Copyright © 2008-2018 Teddy Hogeborn
 
15
# Copyright © 2008-2018 Björn Påhlsson
16
16
#
17
17
# This file is part of Mandos.
18
18
#
31
31
#
32
32
# Contact the authors at <mandos@recompile.se>.
33
33
#
 
34
 
34
35
from __future__ import (division, absolute_import, print_function,
35
36
                        unicode_literals)
36
37
 
39
40
except ImportError:
40
41
    pass
41
42
 
42
 
import sys
43
 
import unittest
44
 
import argparse
45
 
import logging
46
 
import os
47
43
try:
48
44
    import SocketServer as socketserver
49
45
except ImportError:
50
46
    import socketserver
51
47
import socket
 
48
import argparse
52
49
import datetime
53
50
import errno
54
51
try:
55
52
    import ConfigParser as configparser
56
53
except ImportError:
57
54
    import configparser
 
55
import sys
58
56
import re
 
57
import os
59
58
import signal
60
59
import subprocess
61
60
import atexit
62
61
import stat
 
62
import logging
63
63
import logging.handlers
64
64
import pwd
65
65
import contextlib
77
77
import itertools
78
78
import collections
79
79
import codecs
80
 
import random
81
 
import shlex
82
80
 
83
81
import dbus
84
82
import dbus.service
85
 
import gi
86
83
from gi.repository import GLib
87
84
from dbus.mainloop.glib import DBusGMainLoop
88
85
import ctypes
90
87
import xml.dom.minidom
91
88
import inspect
92
89
 
93
 
if sys.version_info.major == 2:
94
 
    __metaclass__ = type
95
 
    str = unicode
96
 
    input = raw_input
97
 
 
98
 
# Add collections.abc.Callable if it does not exist
99
 
try:
100
 
    collections.abc.Callable
101
 
except AttributeError:
102
 
    class abc:
103
 
        Callable = collections.Callable
104
 
    collections.abc = abc
105
 
    del abc
106
 
 
107
 
# Add shlex.quote if it does not exist
108
 
try:
109
 
    shlex.quote
110
 
except AttributeError:
111
 
    shlex.quote = re.escape
112
 
 
113
 
# Show warnings by default
114
 
if not sys.warnoptions:
115
 
    import warnings
116
 
    warnings.simplefilter("default")
117
 
 
118
90
# Try to find the value of SO_BINDTODEVICE:
119
91
try:
120
92
    # This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
140
112
            # No value found
141
113
            SO_BINDTODEVICE = None
142
114
 
143
 
if sys.version_info < (3, 2):
144
 
    configparser.Configparser = configparser.SafeConfigParser
 
115
if sys.version_info.major == 2:
 
116
    str = unicode
145
117
 
146
 
version = "1.8.14"
 
118
version = "1.7.19"
147
119
stored_state_file = "clients.pickle"
148
120
 
149
 
log = logging.getLogger(os.path.basename(sys.argv[0]))
150
 
logging.captureWarnings(True)   # Show warnings via the logging system
 
121
logger = logging.getLogger()
151
122
syslogger = None
152
123
 
153
124
try:
189
160
        facility=logging.handlers.SysLogHandler.LOG_DAEMON,
190
161
        address="/dev/log"))
191
162
    syslogger.setFormatter(logging.Formatter
192
 
                           ("Mandos [%(process)d]: %(levelname)s:"
193
 
                            " %(message)s"))
194
 
    log.addHandler(syslogger)
 
163
                           ('Mandos [%(process)d]: %(levelname)s:'
 
164
                            ' %(message)s'))
 
165
    logger.addHandler(syslogger)
195
166
 
196
167
    if debug:
197
168
        console = logging.StreamHandler()
198
 
        console.setFormatter(logging.Formatter("%(asctime)s %(name)s"
199
 
                                               " [%(process)d]:"
200
 
                                               " %(levelname)s:"
201
 
                                               " %(message)s"))
202
 
        log.addHandler(console)
203
 
    log.setLevel(level)
 
169
        console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
 
170
                                               ' [%(process)d]:'
 
171
                                               ' %(levelname)s:'
 
172
                                               ' %(message)s'))
 
173
        logger.addHandler(console)
 
174
    logger.setLevel(level)
204
175
 
205
176
 
206
177
class PGPError(Exception):
208
179
    pass
209
180
 
210
181
 
211
 
class PGPEngine:
 
182
class PGPEngine(object):
212
183
    """A simple class for OpenPGP symmetric encryption & decryption"""
213
184
 
214
185
    def __init__(self):
218
189
            output = subprocess.check_output(["gpgconf"])
219
190
            for line in output.splitlines():
220
191
                name, text, path = line.split(b":")
221
 
                if name == b"gpg":
 
192
                if name == "gpg":
222
193
                    self.gpg = path
223
194
                    break
224
195
        except OSError as e:
225
196
            if e.errno != errno.ENOENT:
226
197
                raise
227
 
        self.gnupgargs = ["--batch",
228
 
                          "--homedir", self.tempdir,
229
 
                          "--force-mdc",
230
 
                          "--quiet"]
 
198
        self.gnupgargs = ['--batch',
 
199
                          '--homedir', self.tempdir,
 
200
                          '--force-mdc',
 
201
                          '--quiet']
231
202
        # Only GPG version 1 has the --no-use-agent option.
232
 
        if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
 
203
        if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
233
204
            self.gnupgargs.append("--no-use-agent")
234
205
 
235
206
    def __enter__(self):
272
243
                dir=self.tempdir) as passfile:
273
244
            passfile.write(passphrase)
274
245
            passfile.flush()
275
 
            proc = subprocess.Popen([self.gpg, "--symmetric",
276
 
                                     "--passphrase-file",
 
246
            proc = subprocess.Popen([self.gpg, '--symmetric',
 
247
                                     '--passphrase-file',
277
248
                                     passfile.name]
278
249
                                    + self.gnupgargs,
279
250
                                    stdin=subprocess.PIPE,
290
261
                dir=self.tempdir) as passfile:
291
262
            passfile.write(passphrase)
292
263
            passfile.flush()
293
 
            proc = subprocess.Popen([self.gpg, "--decrypt",
294
 
                                     "--passphrase-file",
 
264
            proc = subprocess.Popen([self.gpg, '--decrypt',
 
265
                                     '--passphrase-file',
295
266
                                     passfile.name]
296
267
                                    + self.gnupgargs,
297
268
                                    stdin=subprocess.PIPE,
304
275
 
305
276
 
306
277
# 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."""
 
278
class Avahi(object):
 
279
    """This isn't so much a class as it is a module-like namespace.
 
280
    It is instantiated once, and simulates having an Avahi module."""
309
281
    IF_UNSPEC = -1               # avahi-common/address.h
310
282
    PROTO_UNSPEC = -1            # avahi-common/address.h
311
283
    PROTO_INET = 0               # avahi-common/address.h
315
287
    DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
316
288
    DBUS_PATH_SERVER = "/"
317
289
 
318
 
    @staticmethod
319
 
    def string_array_to_txt_array(t):
 
290
    def string_array_to_txt_array(self, t):
320
291
        return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
321
292
                           for s in t), signature="ay")
322
293
    ENTRY_GROUP_ESTABLISHED = 2  # avahi-common/defs.h
327
298
    SERVER_RUNNING = 2           # avahi-common/defs.h
328
299
    SERVER_COLLISION = 3         # avahi-common/defs.h
329
300
    SERVER_FAILURE = 4           # avahi-common/defs.h
 
301
avahi = Avahi()
330
302
 
331
303
 
332
304
class AvahiError(Exception):
344
316
    pass
345
317
 
346
318
 
347
 
class AvahiService:
 
319
class AvahiService(object):
348
320
    """An Avahi (Zeroconf) service.
349
321
 
350
322
    Attributes:
351
323
    interface: integer; avahi.IF_UNSPEC or an interface index.
352
324
               Used to optionally bind to the specified interface.
353
 
    name: string; Example: "Mandos"
354
 
    type: string; Example: "_mandos._tcp".
 
325
    name: string; Example: 'Mandos'
 
326
    type: string; Example: '_mandos._tcp'.
355
327
     See <https://www.iana.org/assignments/service-names-port-numbers>
356
328
    port: integer; what port to announce
357
329
    TXT: list of strings; TXT record for the service
394
366
    def rename(self, remove=True):
395
367
        """Derived from the Avahi example code"""
396
368
        if self.rename_count >= self.max_renames:
397
 
            log.critical("No suitable Zeroconf service name found"
398
 
                         " after %i retries, exiting.",
399
 
                         self.rename_count)
 
369
            logger.critical("No suitable Zeroconf service name found"
 
370
                            " after %i retries, exiting.",
 
371
                            self.rename_count)
400
372
            raise AvahiServiceError("Too many renames")
401
373
        self.name = str(
402
374
            self.server.GetAlternativeServiceName(self.name))
403
375
        self.rename_count += 1
404
 
        log.info("Changing Zeroconf service name to %r ...",
405
 
                 self.name)
 
376
        logger.info("Changing Zeroconf service name to %r ...",
 
377
                    self.name)
406
378
        if remove:
407
379
            self.remove()
408
380
        try:
410
382
        except dbus.exceptions.DBusException as error:
411
383
            if (error.get_dbus_name()
412
384
                == "org.freedesktop.Avahi.CollisionError"):
413
 
                log.info("Local Zeroconf service name collision.")
 
385
                logger.info("Local Zeroconf service name collision.")
414
386
                return self.rename(remove=False)
415
387
            else:
416
 
                log.critical("D-Bus Exception", exc_info=error)
 
388
                logger.critical("D-Bus Exception", exc_info=error)
417
389
                self.cleanup()
418
390
                os._exit(1)
419
391
 
435
407
                avahi.DBUS_INTERFACE_ENTRY_GROUP)
436
408
        self.entry_group_state_changed_match = (
437
409
            self.group.connect_to_signal(
438
 
                "StateChanged", self.entry_group_state_changed))
439
 
        log.debug("Adding Zeroconf service '%s' of type '%s' ...",
440
 
                  self.name, self.type)
 
410
                'StateChanged', self.entry_group_state_changed))
 
411
        logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
 
412
                     self.name, self.type)
441
413
        self.group.AddService(
442
414
            self.interface,
443
415
            self.protocol,
450
422
 
451
423
    def entry_group_state_changed(self, state, error):
452
424
        """Derived from the Avahi example code"""
453
 
        log.debug("Avahi entry group state change: %i", state)
 
425
        logger.debug("Avahi entry group state change: %i", state)
454
426
 
455
427
        if state == avahi.ENTRY_GROUP_ESTABLISHED:
456
 
            log.debug("Zeroconf service established.")
 
428
            logger.debug("Zeroconf service established.")
457
429
        elif state == avahi.ENTRY_GROUP_COLLISION:
458
 
            log.info("Zeroconf service name collision.")
 
430
            logger.info("Zeroconf service name collision.")
459
431
            self.rename()
460
432
        elif state == avahi.ENTRY_GROUP_FAILURE:
461
 
            log.critical("Avahi: Error in group state changed %s",
462
 
                         str(error))
 
433
            logger.critical("Avahi: Error in group state changed %s",
 
434
                            str(error))
463
435
            raise AvahiGroupError("State changed: {!s}".format(error))
464
436
 
465
437
    def cleanup(self):
475
447
 
476
448
    def server_state_changed(self, state, error=None):
477
449
        """Derived from the Avahi example code"""
478
 
        log.debug("Avahi server state change: %i", state)
 
450
        logger.debug("Avahi server state change: %i", state)
479
451
        bad_states = {
480
452
            avahi.SERVER_INVALID: "Zeroconf server invalid",
481
453
            avahi.SERVER_REGISTERING: None,
485
457
        if state in bad_states:
486
458
            if bad_states[state] is not None:
487
459
                if error is None:
488
 
                    log.error(bad_states[state])
 
460
                    logger.error(bad_states[state])
489
461
                else:
490
 
                    log.error(bad_states[state] + ": %r", error)
 
462
                    logger.error(bad_states[state] + ": %r", error)
491
463
            self.cleanup()
492
464
        elif state == avahi.SERVER_RUNNING:
493
465
            try:
495
467
            except dbus.exceptions.DBusException as error:
496
468
                if (error.get_dbus_name()
497
469
                    == "org.freedesktop.Avahi.CollisionError"):
498
 
                    log.info("Local Zeroconf service name collision.")
 
470
                    logger.info("Local Zeroconf service name"
 
471
                                " collision.")
499
472
                    return self.rename(remove=False)
500
473
                else:
501
 
                    log.critical("D-Bus Exception", exc_info=error)
 
474
                    logger.critical("D-Bus Exception", exc_info=error)
502
475
                    self.cleanup()
503
476
                    os._exit(1)
504
477
        else:
505
478
            if error is None:
506
 
                log.debug("Unknown state: %r", state)
 
479
                logger.debug("Unknown state: %r", state)
507
480
            else:
508
 
                log.debug("Unknown state: %r: %r", state, error)
 
481
                logger.debug("Unknown state: %r: %r", state, error)
509
482
 
510
483
    def activate(self):
511
484
        """Derived from the Avahi example code"""
523
496
class AvahiServiceToSyslog(AvahiService):
524
497
    def rename(self, *args, **kwargs):
525
498
        """Add the new name to the syslog messages"""
526
 
        ret = super(AvahiServiceToSyslog, self).rename(*args,
527
 
                                                       **kwargs)
 
499
        ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
528
500
        syslogger.setFormatter(logging.Formatter(
529
 
            "Mandos ({}) [%(process)d]: %(levelname)s: %(message)s"
 
501
            'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
530
502
            .format(self.name)))
531
503
        return ret
532
504
 
533
505
 
534
506
# 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."""
 
507
class GnuTLS(object):
 
508
    """This isn't so much a class as it is a module-like namespace.
 
509
    It is instantiated once, and simulates having a GnuTLS module."""
537
510
 
538
511
    library = ctypes.util.find_library("gnutls")
539
512
    if library is None:
540
513
        library = ctypes.util.find_library("gnutls-deb0")
541
514
    _library = ctypes.cdll.LoadLibrary(library)
542
515
    del library
 
516
    _need_version = b"3.3.0"
 
517
 
 
518
    def __init__(self):
 
519
        # Need to use "self" here, since this method is called before
 
520
        # the assignment to the "gnutls" global variable happens.
 
521
        if self.check_version(self._need_version) is None:
 
522
            raise self.Error("Needs GnuTLS {} or later"
 
523
                             .format(self._need_version))
543
524
 
544
525
    # Unless otherwise indicated, the constants and types below are
545
526
    # all from the gnutls/gnutls.h C header file.
549
530
    E_INTERRUPTED = -52
550
531
    E_AGAIN = -28
551
532
    CRT_OPENPGP = 2
552
 
    CRT_RAWPK = 3
553
533
    CLIENT = 2
554
534
    SHUT_RDWR = 0
555
535
    CRD_CERTIFICATE = 1
556
536
    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
537
    OPENPGP_FMT_RAW = 0         # gnutls/openpgp.h
563
538
 
564
539
    # Types
565
 
    class _session_int(ctypes.Structure):
 
540
    class session_int(ctypes.Structure):
566
541
        _fields_ = []
567
 
    session_t = ctypes.POINTER(_session_int)
 
542
    session_t = ctypes.POINTER(session_int)
568
543
 
569
544
    class certificate_credentials_st(ctypes.Structure):
570
545
        _fields_ = []
573
548
    certificate_type_t = ctypes.c_int
574
549
 
575
550
    class datum_t(ctypes.Structure):
576
 
        _fields_ = [("data", ctypes.POINTER(ctypes.c_ubyte)),
577
 
                    ("size", ctypes.c_uint)]
 
551
        _fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
 
552
                    ('size', ctypes.c_uint)]
578
553
 
579
 
    class _openpgp_crt_int(ctypes.Structure):
 
554
    class openpgp_crt_int(ctypes.Structure):
580
555
        _fields_ = []
581
 
    openpgp_crt_t = ctypes.POINTER(_openpgp_crt_int)
 
556
    openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
582
557
    openpgp_crt_fmt_t = ctypes.c_int  # gnutls/openpgp.h
583
558
    log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
584
559
    credentials_type_t = ctypes.c_int
587
562
 
588
563
    # Exceptions
589
564
    class Error(Exception):
 
565
        # We need to use the class name "GnuTLS" here, since this
 
566
        # exception might be raised from within GnuTLS.__init__,
 
567
        # which is called before the assignment to the "gnutls"
 
568
        # global variable has happened.
590
569
        def __init__(self, message=None, code=None, args=()):
591
570
            # Default usage is by a message string, but if a return
592
571
            # code is passed, convert it to a string with
593
572
            # gnutls.strerror()
594
573
            self.code = code
595
574
            if message is None and code is not None:
596
 
                message = gnutls.strerror(code).decode(
597
 
                    "utf-8", errors="replace")
598
 
            return super(gnutls.Error, self).__init__(
 
575
                message = GnuTLS.strerror(code)
 
576
            return super(GnuTLS.Error, self).__init__(
599
577
                message, *args)
600
578
 
601
579
    class CertificateSecurityError(Error):
602
580
        pass
603
581
 
604
 
    class PointerTo:
605
 
        def __init__(self, cls):
606
 
            self.cls = cls
607
 
 
608
 
        def from_param(self, obj):
609
 
            if not isinstance(obj, self.cls):
610
 
                raise TypeError("Not of type {}: {!r}"
611
 
                                .format(self.cls.__name__, obj))
612
 
            return ctypes.byref(obj.from_param(obj))
613
 
 
614
 
    class CastToVoidPointer:
615
 
        def __init__(self, cls):
616
 
            self.cls = cls
617
 
 
618
 
        def from_param(self, obj):
619
 
            if not isinstance(obj, self.cls):
620
 
                raise TypeError("Not of type {}: {!r}"
621
 
                                .format(self.cls.__name__, obj))
622
 
            return ctypes.cast(obj.from_param(obj), ctypes.c_void_p)
623
 
 
624
 
    class With_from_param:
625
 
        @classmethod
626
 
        def from_param(cls, obj):
627
 
            return obj._as_parameter_
628
 
 
629
582
    # Classes
630
 
    class Credentials(With_from_param):
 
583
    class Credentials(object):
631
584
        def __init__(self):
632
 
            self._as_parameter_ = gnutls.certificate_credentials_t()
633
 
            gnutls.certificate_allocate_credentials(self)
 
585
            self._c_object = gnutls.certificate_credentials_t()
 
586
            gnutls.certificate_allocate_credentials(
 
587
                ctypes.byref(self._c_object))
634
588
            self.type = gnutls.CRD_CERTIFICATE
635
589
 
636
590
        def __del__(self):
637
 
            gnutls.certificate_free_credentials(self)
 
591
            gnutls.certificate_free_credentials(self._c_object)
638
592
 
639
 
    class ClientSession(With_from_param):
 
593
    class ClientSession(object):
640
594
        def __init__(self, socket, credentials=None):
641
 
            self._as_parameter_ = gnutls.session_t()
642
 
            gnutls_flags = gnutls.CLIENT
643
 
            if gnutls.check_version(b"3.5.6"):
644
 
                gnutls_flags |= gnutls.NO_TICKETS
645
 
            if gnutls.has_rawpk:
646
 
                gnutls_flags |= gnutls.ENABLE_RAWPK
647
 
            gnutls.init(self, gnutls_flags)
648
 
            del gnutls_flags
649
 
            gnutls.set_default_priority(self)
650
 
            gnutls.transport_set_ptr(self, socket.fileno())
651
 
            gnutls.handshake_set_private_extensions(self, True)
 
595
            self._c_object = gnutls.session_t()
 
596
            gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
 
597
            gnutls.set_default_priority(self._c_object)
 
598
            gnutls.transport_set_ptr(self._c_object, socket.fileno())
 
599
            gnutls.handshake_set_private_extensions(self._c_object,
 
600
                                                    True)
652
601
            self.socket = socket
653
602
            if credentials is None:
654
603
                credentials = gnutls.Credentials()
655
 
            gnutls.credentials_set(self, credentials.type,
656
 
                                   credentials)
 
604
            gnutls.credentials_set(self._c_object, credentials.type,
 
605
                                   ctypes.cast(credentials._c_object,
 
606
                                               ctypes.c_void_p))
657
607
            self.credentials = credentials
658
608
 
659
609
        def __del__(self):
660
 
            gnutls.deinit(self)
 
610
            gnutls.deinit(self._c_object)
661
611
 
662
612
        def handshake(self):
663
 
            return gnutls.handshake(self)
 
613
            return gnutls.handshake(self._c_object)
664
614
 
665
615
        def send(self, data):
666
616
            data = bytes(data)
667
617
            data_len = len(data)
668
618
            while data_len > 0:
669
 
                data_len -= gnutls.record_send(self, data[-data_len:],
 
619
                data_len -= gnutls.record_send(self._c_object,
 
620
                                               data[-data_len:],
670
621
                                               data_len)
671
622
 
672
623
        def bye(self):
673
 
            return gnutls.bye(self, gnutls.SHUT_RDWR)
 
624
            return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
674
625
 
675
626
    # Error handling functions
676
627
    def _error_code(result):
677
628
        """A function to raise exceptions on errors, suitable
678
 
        for the "restype" attribute on ctypes functions"""
679
 
        if result >= gnutls.E_SUCCESS:
 
629
        for the 'restype' attribute on ctypes functions"""
 
630
        if result >= 0:
680
631
            return result
681
632
        if result == gnutls.E_NO_CERTIFICATE_FOUND:
682
633
            raise gnutls.CertificateSecurityError(code=result)
683
634
        raise gnutls.Error(code=result)
684
635
 
685
 
    def _retry_on_error(result, func, arguments,
686
 
                        _error_code=_error_code):
 
636
    def _retry_on_error(result, func, arguments):
687
637
        """A function to retry on some errors, suitable
688
 
        for the "errcheck" attribute on ctypes functions"""
689
 
        while result < gnutls.E_SUCCESS:
 
638
        for the 'errcheck' attribute on ctypes functions"""
 
639
        while result < 0:
690
640
            if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
691
641
                return _error_code(result)
692
642
            result = func(*arguments)
697
647
 
698
648
    # Functions
699
649
    priority_set_direct = _library.gnutls_priority_set_direct
700
 
    priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,
 
650
    priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
701
651
                                    ctypes.POINTER(ctypes.c_char_p)]
702
652
    priority_set_direct.restype = _error_code
703
653
 
704
654
    init = _library.gnutls_init
705
 
    init.argtypes = [PointerTo(ClientSession), ctypes.c_int]
 
655
    init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
706
656
    init.restype = _error_code
707
657
 
708
658
    set_default_priority = _library.gnutls_set_default_priority
709
 
    set_default_priority.argtypes = [ClientSession]
 
659
    set_default_priority.argtypes = [session_t]
710
660
    set_default_priority.restype = _error_code
711
661
 
712
662
    record_send = _library.gnutls_record_send
713
 
    record_send.argtypes = [ClientSession, ctypes.c_void_p,
 
663
    record_send.argtypes = [session_t, ctypes.c_void_p,
714
664
                            ctypes.c_size_t]
715
665
    record_send.restype = ctypes.c_ssize_t
716
666
    record_send.errcheck = _retry_on_error
718
668
    certificate_allocate_credentials = (
719
669
        _library.gnutls_certificate_allocate_credentials)
720
670
    certificate_allocate_credentials.argtypes = [
721
 
        PointerTo(Credentials)]
 
671
        ctypes.POINTER(certificate_credentials_t)]
722
672
    certificate_allocate_credentials.restype = _error_code
723
673
 
724
674
    certificate_free_credentials = (
725
675
        _library.gnutls_certificate_free_credentials)
726
 
    certificate_free_credentials.argtypes = [Credentials]
 
676
    certificate_free_credentials.argtypes = [
 
677
        certificate_credentials_t]
727
678
    certificate_free_credentials.restype = None
728
679
 
729
680
    handshake_set_private_extensions = (
730
681
        _library.gnutls_handshake_set_private_extensions)
731
 
    handshake_set_private_extensions.argtypes = [ClientSession,
 
682
    handshake_set_private_extensions.argtypes = [session_t,
732
683
                                                 ctypes.c_int]
733
684
    handshake_set_private_extensions.restype = None
734
685
 
735
686
    credentials_set = _library.gnutls_credentials_set
736
 
    credentials_set.argtypes = [ClientSession, credentials_type_t,
737
 
                                CastToVoidPointer(Credentials)]
 
687
    credentials_set.argtypes = [session_t, credentials_type_t,
 
688
                                ctypes.c_void_p]
738
689
    credentials_set.restype = _error_code
739
690
 
740
691
    strerror = _library.gnutls_strerror
742
693
    strerror.restype = ctypes.c_char_p
743
694
 
744
695
    certificate_type_get = _library.gnutls_certificate_type_get
745
 
    certificate_type_get.argtypes = [ClientSession]
 
696
    certificate_type_get.argtypes = [session_t]
746
697
    certificate_type_get.restype = _error_code
747
698
 
748
699
    certificate_get_peers = _library.gnutls_certificate_get_peers
749
 
    certificate_get_peers.argtypes = [ClientSession,
 
700
    certificate_get_peers.argtypes = [session_t,
750
701
                                      ctypes.POINTER(ctypes.c_uint)]
751
702
    certificate_get_peers.restype = ctypes.POINTER(datum_t)
752
703
 
759
710
    global_set_log_function.restype = None
760
711
 
761
712
    deinit = _library.gnutls_deinit
762
 
    deinit.argtypes = [ClientSession]
 
713
    deinit.argtypes = [session_t]
763
714
    deinit.restype = None
764
715
 
765
716
    handshake = _library.gnutls_handshake
766
 
    handshake.argtypes = [ClientSession]
767
 
    handshake.restype = ctypes.c_int
 
717
    handshake.argtypes = [session_t]
 
718
    handshake.restype = _error_code
768
719
    handshake.errcheck = _retry_on_error
769
720
 
770
721
    transport_set_ptr = _library.gnutls_transport_set_ptr
771
 
    transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]
 
722
    transport_set_ptr.argtypes = [session_t, transport_ptr_t]
772
723
    transport_set_ptr.restype = None
773
724
 
774
725
    bye = _library.gnutls_bye
775
 
    bye.argtypes = [ClientSession, close_request_t]
776
 
    bye.restype = ctypes.c_int
 
726
    bye.argtypes = [session_t, close_request_t]
 
727
    bye.restype = _error_code
777
728
    bye.errcheck = _retry_on_error
778
729
 
779
730
    check_version = _library.gnutls_check_version
780
731
    check_version.argtypes = [ctypes.c_char_p]
781
732
    check_version.restype = ctypes.c_char_p
782
733
 
783
 
    _need_version = b"3.3.0"
784
 
    if check_version(_need_version) is None:
785
 
        raise self.Error("Needs GnuTLS {} or later"
786
 
                         .format(_need_version))
787
 
 
788
 
    _tls_rawpk_version = b"3.6.6"
789
 
    has_rawpk = bool(check_version(_tls_rawpk_version))
790
 
 
791
 
    if has_rawpk:
792
 
        # Types
793
 
        class pubkey_st(ctypes.Structure):
794
 
            _fields = []
795
 
        pubkey_t = ctypes.POINTER(pubkey_st)
796
 
 
797
 
        x509_crt_fmt_t = ctypes.c_int
798
 
 
799
 
        # All the function declarations below are from
800
 
        # gnutls/abstract.h
801
 
        pubkey_init = _library.gnutls_pubkey_init
802
 
        pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
803
 
        pubkey_init.restype = _error_code
804
 
 
805
 
        pubkey_import = _library.gnutls_pubkey_import
806
 
        pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
807
 
                                  x509_crt_fmt_t]
808
 
        pubkey_import.restype = _error_code
809
 
 
810
 
        pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
811
 
        pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
812
 
                                      ctypes.POINTER(ctypes.c_ubyte),
813
 
                                      ctypes.POINTER(ctypes.c_size_t)]
814
 
        pubkey_get_key_id.restype = _error_code
815
 
 
816
 
        pubkey_deinit = _library.gnutls_pubkey_deinit
817
 
        pubkey_deinit.argtypes = [pubkey_t]
818
 
        pubkey_deinit.restype = None
819
 
    else:
820
 
        # All the function declarations below are from
821
 
        # gnutls/openpgp.h
822
 
 
823
 
        openpgp_crt_init = _library.gnutls_openpgp_crt_init
824
 
        openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
825
 
        openpgp_crt_init.restype = _error_code
826
 
 
827
 
        openpgp_crt_import = _library.gnutls_openpgp_crt_import
828
 
        openpgp_crt_import.argtypes = [openpgp_crt_t,
829
 
                                       ctypes.POINTER(datum_t),
830
 
                                       openpgp_crt_fmt_t]
831
 
        openpgp_crt_import.restype = _error_code
832
 
 
833
 
        openpgp_crt_verify_self = \
834
 
            _library.gnutls_openpgp_crt_verify_self
835
 
        openpgp_crt_verify_self.argtypes = [
836
 
            openpgp_crt_t,
837
 
            ctypes.c_uint,
838
 
            ctypes.POINTER(ctypes.c_uint),
839
 
        ]
840
 
        openpgp_crt_verify_self.restype = _error_code
841
 
 
842
 
        openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
843
 
        openpgp_crt_deinit.argtypes = [openpgp_crt_t]
844
 
        openpgp_crt_deinit.restype = None
845
 
 
846
 
        openpgp_crt_get_fingerprint = (
847
 
            _library.gnutls_openpgp_crt_get_fingerprint)
848
 
        openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
849
 
                                                ctypes.c_void_p,
850
 
                                                ctypes.POINTER(
851
 
                                                    ctypes.c_size_t)]
852
 
        openpgp_crt_get_fingerprint.restype = _error_code
853
 
 
854
 
    if check_version(b"3.6.4"):
855
 
        certificate_type_get2 = _library.gnutls_certificate_type_get2
856
 
        certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]
857
 
        certificate_type_get2.restype = _error_code
 
734
    # All the function declarations below are from gnutls/openpgp.h
 
735
 
 
736
    openpgp_crt_init = _library.gnutls_openpgp_crt_init
 
737
    openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
 
738
    openpgp_crt_init.restype = _error_code
 
739
 
 
740
    openpgp_crt_import = _library.gnutls_openpgp_crt_import
 
741
    openpgp_crt_import.argtypes = [openpgp_crt_t,
 
742
                                   ctypes.POINTER(datum_t),
 
743
                                   openpgp_crt_fmt_t]
 
744
    openpgp_crt_import.restype = _error_code
 
745
 
 
746
    openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
 
747
    openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
 
748
                                        ctypes.POINTER(ctypes.c_uint)]
 
749
    openpgp_crt_verify_self.restype = _error_code
 
750
 
 
751
    openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
 
752
    openpgp_crt_deinit.argtypes = [openpgp_crt_t]
 
753
    openpgp_crt_deinit.restype = None
 
754
 
 
755
    openpgp_crt_get_fingerprint = (
 
756
        _library.gnutls_openpgp_crt_get_fingerprint)
 
757
    openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
 
758
                                            ctypes.c_void_p,
 
759
                                            ctypes.POINTER(
 
760
                                                ctypes.c_size_t)]
 
761
    openpgp_crt_get_fingerprint.restype = _error_code
858
762
 
859
763
    # Remove non-public functions
860
764
    del _error_code, _retry_on_error
 
765
# Create the global "gnutls" object, simulating a module
 
766
gnutls = GnuTLS()
861
767
 
862
768
 
863
769
def call_pipe(connection,       # : multiprocessing.Connection
871
777
    connection.close()
872
778
 
873
779
 
874
 
class Client:
 
780
class Client(object):
875
781
    """A representation of a client host served by this server.
876
782
 
877
783
    Attributes:
878
 
    approved:   bool(); None if not yet approved/disapproved
 
784
    approved:   bool(); 'None' if not yet approved/disapproved
879
785
    approval_delay: datetime.timedelta(); Time to wait for approval
880
786
    approval_duration: datetime.timedelta(); Duration of one approval
881
 
    checker: multiprocessing.Process(); a running checker process used
882
 
             to see if the client lives. None if no process is
883
 
             running.
 
787
    checker:    subprocess.Popen(); a running checker process used
 
788
                                    to see if the client lives.
 
789
                                    'None' if no process is running.
884
790
    checker_callback_tag: a GLib event source tag, or None
885
791
    checker_command: string; External command which is run to check
886
792
                     if client lives.  %() expansions are done at
894
800
    disable_initiator_tag: a GLib event source tag, or None
895
801
    enabled:    bool()
896
802
    fingerprint: string (40 or 32 hexadecimal digits); used to
897
 
                 uniquely identify an OpenPGP client
898
 
    key_id: string (64 hexadecimal digits); used to uniquely identify
899
 
            a client using raw public keys
 
803
                 uniquely identify the client
900
804
    host:       string; available for use by the checker command
901
805
    interval:   datetime.timedelta(); How often to start a new checker
902
806
    last_approval_request: datetime.datetime(); (UTC) or None
920
824
    """
921
825
 
922
826
    runtime_expansions = ("approval_delay", "approval_duration",
923
 
                          "created", "enabled", "expires", "key_id",
 
827
                          "created", "enabled", "expires",
924
828
                          "fingerprint", "host", "interval",
925
829
                          "last_approval_request", "last_checked_ok",
926
830
                          "last_enabled", "name", "timeout")
956
860
            client["enabled"] = config.getboolean(client_name,
957
861
                                                  "enabled")
958
862
 
959
 
            # Uppercase and remove spaces from key_id and fingerprint
960
 
            # for later comparison purposes with return value from the
961
 
            # key_id() and fingerprint() functions
962
 
            client["key_id"] = (section.get("key_id", "").upper()
963
 
                                .replace(" ", ""))
 
863
            # Uppercase and remove spaces from fingerprint for later
 
864
            # comparison purposes with return value from the
 
865
            # fingerprint() function
964
866
            client["fingerprint"] = (section["fingerprint"].upper()
965
867
                                     .replace(" ", ""))
966
868
            if "secret" in section:
1009
911
            self.last_enabled = None
1010
912
            self.expires = None
1011
913
 
1012
 
        log.debug("Creating client %r", self.name)
1013
 
        log.debug("  Key ID: %s", self.key_id)
1014
 
        log.debug("  Fingerprint: %s", self.fingerprint)
 
914
        logger.debug("Creating client %r", self.name)
 
915
        logger.debug("  Fingerprint: %s", self.fingerprint)
1015
916
        self.created = settings.get("created",
1016
917
                                    datetime.datetime.utcnow())
1017
918
 
1056
957
        if not getattr(self, "enabled", False):
1057
958
            return False
1058
959
        if not quiet:
1059
 
            log.info("Disabling client %s", self.name)
 
960
            logger.info("Disabling client %s", self.name)
1060
961
        if getattr(self, "disable_initiator_tag", None) is not None:
1061
962
            GLib.source_remove(self.disable_initiator_tag)
1062
963
            self.disable_initiator_tag = None
1080
981
        if self.checker_initiator_tag is not None:
1081
982
            GLib.source_remove(self.checker_initiator_tag)
1082
983
        self.checker_initiator_tag = GLib.timeout_add(
1083
 
            random.randrange(int(self.interval.total_seconds() * 1000
1084
 
                                 + 1)),
 
984
            int(self.interval.total_seconds() * 1000),
1085
985
            self.start_checker)
1086
986
        # Schedule a disable() when 'timeout' has passed
1087
987
        if self.disable_initiator_tag is not None:
1094
994
    def checker_callback(self, source, condition, connection,
1095
995
                         command):
1096
996
        """The checker has completed, so take appropriate actions."""
 
997
        self.checker_callback_tag = None
 
998
        self.checker = None
1097
999
        # Read return code from connection (see call_pipe)
1098
1000
        returncode = connection.recv()
1099
1001
        connection.close()
1100
 
        if self.checker is not None:
1101
 
            self.checker.join()
1102
 
        self.checker_callback_tag = None
1103
 
        self.checker = None
1104
1002
 
1105
1003
        if returncode >= 0:
1106
1004
            self.last_checker_status = returncode
1107
1005
            self.last_checker_signal = None
1108
1006
            if self.last_checker_status == 0:
1109
 
                log.info("Checker for %(name)s succeeded", vars(self))
 
1007
                logger.info("Checker for %(name)s succeeded",
 
1008
                            vars(self))
1110
1009
                self.checked_ok()
1111
1010
            else:
1112
 
                log.info("Checker for %(name)s failed", vars(self))
 
1011
                logger.info("Checker for %(name)s failed", vars(self))
1113
1012
        else:
1114
1013
            self.last_checker_status = -1
1115
1014
            self.last_checker_signal = -returncode
1116
 
            log.warning("Checker for %(name)s crashed?", vars(self))
 
1015
            logger.warning("Checker for %(name)s crashed?",
 
1016
                           vars(self))
1117
1017
        return False
1118
1018
 
1119
1019
    def checked_ok(self):
1153
1053
        # should be.
1154
1054
 
1155
1055
        if self.checker is not None and not self.checker.is_alive():
1156
 
            log.warning("Checker was not alive; joining")
 
1056
            logger.warning("Checker was not alive; joining")
1157
1057
            self.checker.join()
1158
1058
            self.checker = None
1159
1059
        # Start a new checker if needed
1160
1060
        if self.checker is None:
1161
1061
            # Escape attributes for the shell
1162
1062
            escaped_attrs = {
1163
 
                attr: shlex.quote(str(getattr(self, attr)))
 
1063
                attr: re.escape(str(getattr(self, attr)))
1164
1064
                for attr in self.runtime_expansions}
1165
1065
            try:
1166
1066
                command = self.checker_command % escaped_attrs
1167
1067
            except TypeError as error:
1168
 
                log.error('Could not format string "%s"',
1169
 
                          self.checker_command, exc_info=error)
 
1068
                logger.error('Could not format string "%s"',
 
1069
                             self.checker_command,
 
1070
                             exc_info=error)
1170
1071
                return True     # Try again later
1171
1072
            self.current_checker_command = command
1172
 
            log.info("Starting checker %r for %s", command, self.name)
 
1073
            logger.info("Starting checker %r for %s", command,
 
1074
                        self.name)
1173
1075
            # We don't need to redirect stdout and stderr, since
1174
1076
            # in normal mode, that is already done by daemon(),
1175
1077
            # and in debug mode we don't want to.  (Stdin is
1191
1093
                kwargs=popen_args)
1192
1094
            self.checker.start()
1193
1095
            self.checker_callback_tag = GLib.io_add_watch(
1194
 
                GLib.IOChannel.unix_new(pipe[0].fileno()),
1195
 
                GLib.PRIORITY_DEFAULT, GLib.IO_IN,
 
1096
                pipe[0].fileno(), GLib.IO_IN,
1196
1097
                self.checker_callback, pipe[0], command)
1197
1098
        # Re-run this periodically if run by GLib.timeout_add
1198
1099
        return True
1204
1105
            self.checker_callback_tag = None
1205
1106
        if getattr(self, "checker", None) is None:
1206
1107
            return
1207
 
        log.debug("Stopping checker for %(name)s", vars(self))
 
1108
        logger.debug("Stopping checker for %(name)s", vars(self))
1208
1109
        self.checker.terminate()
1209
1110
        self.checker = None
1210
1111
 
1237
1138
        func._dbus_name = func.__name__
1238
1139
        if func._dbus_name.endswith("_dbus_property"):
1239
1140
            func._dbus_name = func._dbus_name[:-14]
1240
 
        func._dbus_get_args_options = {"byte_arrays": byte_arrays}
 
1141
        func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1241
1142
        return func
1242
1143
 
1243
1144
    return decorator
1332
1233
 
1333
1234
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1334
1235
                         out_signature="s",
1335
 
                         path_keyword="object_path",
1336
 
                         connection_keyword="connection")
 
1236
                         path_keyword='object_path',
 
1237
                         connection_keyword='connection')
1337
1238
    def Introspect(self, object_path, connection):
1338
1239
        """Overloading of standard D-Bus method.
1339
1240
 
1388
1289
            document.unlink()
1389
1290
        except (AttributeError, xml.dom.DOMException,
1390
1291
                xml.parsers.expat.ExpatError) as error:
1391
 
            log.error("Failed to override Introspection method",
1392
 
                      exc_info=error)
 
1292
            logger.error("Failed to override Introspection method",
 
1293
                         exc_info=error)
1393
1294
        return xmlstring
1394
1295
 
1395
1296
 
1453
1354
                raise ValueError("Byte arrays not supported for non-"
1454
1355
                                 "'ay' signature {!r}"
1455
1356
                                 .format(prop._dbus_signature))
1456
 
            value = dbus.ByteArray(bytes(value))
 
1357
            value = dbus.ByteArray(b''.join(chr(byte)
 
1358
                                            for byte in value))
1457
1359
        prop(value)
1458
1360
 
1459
1361
    @dbus.service.method(dbus.PROPERTIES_IFACE,
1492
1394
 
1493
1395
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1494
1396
                         out_signature="s",
1495
 
                         path_keyword="object_path",
1496
 
                         connection_keyword="connection")
 
1397
                         path_keyword='object_path',
 
1398
                         connection_keyword='connection')
1497
1399
    def Introspect(self, object_path, connection):
1498
1400
        """Overloading of standard D-Bus method.
1499
1401
 
1555
1457
            document.unlink()
1556
1458
        except (AttributeError, xml.dom.DOMException,
1557
1459
                xml.parsers.expat.ExpatError) as error:
1558
 
            log.error("Failed to override Introspection method",
1559
 
                      exc_info=error)
 
1460
            logger.error("Failed to override Introspection method",
 
1461
                         exc_info=error)
1560
1462
        return xmlstring
1561
1463
 
1562
1464
 
1594
1496
 
1595
1497
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1596
1498
                         out_signature="s",
1597
 
                         path_keyword="object_path",
1598
 
                         connection_keyword="connection")
 
1499
                         path_keyword='object_path',
 
1500
                         connection_keyword='connection')
1599
1501
    def Introspect(self, object_path, connection):
1600
1502
        """Overloading of standard D-Bus method.
1601
1503
 
1626
1528
            document.unlink()
1627
1529
        except (AttributeError, xml.dom.DOMException,
1628
1530
                xml.parsers.expat.ExpatError) as error:
1629
 
            log.error("Failed to override Introspection method",
1630
 
                      exc_info=error)
 
1531
            logger.error("Failed to override Introspection method",
 
1532
                         exc_info=error)
1631
1533
        return xmlstring
1632
1534
 
1633
1535
 
2097
1999
    def Name_dbus_property(self):
2098
2000
        return dbus.String(self.name)
2099
2001
 
2100
 
    # KeyID - property
2101
 
    @dbus_annotations(
2102
 
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2103
 
    @dbus_service_property(_interface, signature="s", access="read")
2104
 
    def KeyID_dbus_property(self):
2105
 
        return dbus.String(self.key_id)
2106
 
 
2107
2002
    # Fingerprint - property
2108
2003
    @dbus_annotations(
2109
2004
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2264
2159
    del _interface
2265
2160
 
2266
2161
 
2267
 
class ProxyClient:
2268
 
    def __init__(self, child_pipe, key_id, fpr, address):
 
2162
class ProxyClient(object):
 
2163
    def __init__(self, child_pipe, fpr, address):
2269
2164
        self._pipe = child_pipe
2270
 
        self._pipe.send(("init", key_id, fpr, address))
 
2165
        self._pipe.send(('init', fpr, address))
2271
2166
        if not self._pipe.recv():
2272
 
            raise KeyError(key_id or fpr)
 
2167
            raise KeyError(fpr)
2273
2168
 
2274
2169
    def __getattribute__(self, name):
2275
 
        if name == "_pipe":
 
2170
        if name == '_pipe':
2276
2171
            return super(ProxyClient, self).__getattribute__(name)
2277
 
        self._pipe.send(("getattr", name))
 
2172
        self._pipe.send(('getattr', name))
2278
2173
        data = self._pipe.recv()
2279
 
        if data[0] == "data":
 
2174
        if data[0] == 'data':
2280
2175
            return data[1]
2281
 
        if data[0] == "function":
 
2176
        if data[0] == 'function':
2282
2177
 
2283
2178
            def func(*args, **kwargs):
2284
 
                self._pipe.send(("funcall", name, args, kwargs))
 
2179
                self._pipe.send(('funcall', name, args, kwargs))
2285
2180
                return self._pipe.recv()[1]
2286
2181
 
2287
2182
            return func
2288
2183
 
2289
2184
    def __setattr__(self, name, value):
2290
 
        if name == "_pipe":
 
2185
        if name == '_pipe':
2291
2186
            return super(ProxyClient, self).__setattr__(name, value)
2292
 
        self._pipe.send(("setattr", name, value))
 
2187
        self._pipe.send(('setattr', name, value))
2293
2188
 
2294
2189
 
2295
2190
class ClientHandler(socketserver.BaseRequestHandler, object):
2300
2195
 
2301
2196
    def handle(self):
2302
2197
        with contextlib.closing(self.server.child_pipe) as child_pipe:
2303
 
            log.info("TCP connection from: %s",
2304
 
                     str(self.client_address))
2305
 
            log.debug("Pipe FD: %d", self.server.child_pipe.fileno())
 
2198
            logger.info("TCP connection from: %s",
 
2199
                        str(self.client_address))
 
2200
            logger.debug("Pipe FD: %d",
 
2201
                         self.server.child_pipe.fileno())
2306
2202
 
2307
2203
            session = gnutls.ClientSession(self.request)
2308
2204
 
2309
 
            # priority = ":".join(("NONE", "+VERS-TLS1.1",
 
2205
            # priority = ':'.join(("NONE", "+VERS-TLS1.1",
2310
2206
            #                       "+AES-256-CBC", "+SHA1",
2311
2207
            #                       "+COMP-NULL", "+CTYPE-OPENPGP",
2312
2208
            #                       "+DHE-DSS"))
2314
2210
            priority = self.server.gnutls_priority
2315
2211
            if priority is None:
2316
2212
                priority = "NORMAL"
2317
 
            gnutls.priority_set_direct(session,
2318
 
                                       priority.encode("utf-8"), None)
 
2213
            gnutls.priority_set_direct(session._c_object,
 
2214
                                       priority.encode("utf-8"),
 
2215
                                       None)
2319
2216
 
2320
2217
            # Start communication using the Mandos protocol
2321
2218
            # Get protocol number
2322
2219
            line = self.request.makefile().readline()
2323
 
            log.debug("Protocol version: %r", line)
 
2220
            logger.debug("Protocol version: %r", line)
2324
2221
            try:
2325
2222
                if int(line.strip().split()[0]) > 1:
2326
2223
                    raise RuntimeError(line)
2327
2224
            except (ValueError, IndexError, RuntimeError) as error:
2328
 
                log.error("Unknown protocol version: %s", error)
 
2225
                logger.error("Unknown protocol version: %s", error)
2329
2226
                return
2330
2227
 
2331
2228
            # Start GnuTLS connection
2332
2229
            try:
2333
2230
                session.handshake()
2334
2231
            except gnutls.Error as error:
2335
 
                log.warning("Handshake failed: %s", error)
 
2232
                logger.warning("Handshake failed: %s", error)
2336
2233
                # Do not run session.bye() here: the session is not
2337
2234
                # established.  Just abandon the request.
2338
2235
                return
2339
 
            log.debug("Handshake succeeded")
 
2236
            logger.debug("Handshake succeeded")
2340
2237
 
2341
2238
            approval_required = False
2342
2239
            try:
2343
 
                if gnutls.has_rawpk:
2344
 
                    fpr = b""
2345
 
                    try:
2346
 
                        key_id = self.key_id(
2347
 
                            self.peer_certificate(session))
2348
 
                    except (TypeError, gnutls.Error) as error:
2349
 
                        log.warning("Bad certificate: %s", error)
2350
 
                        return
2351
 
                    log.debug("Key ID: %s",
2352
 
                              key_id.decode("utf-8",
2353
 
                                            errors="replace"))
2354
 
 
2355
 
                else:
2356
 
                    key_id = b""
2357
 
                    try:
2358
 
                        fpr = self.fingerprint(
2359
 
                            self.peer_certificate(session))
2360
 
                    except (TypeError, gnutls.Error) as error:
2361
 
                        log.warning("Bad certificate: %s", error)
2362
 
                        return
2363
 
                    log.debug("Fingerprint: %s", fpr)
2364
 
 
2365
 
                try:
2366
 
                    client = ProxyClient(child_pipe, key_id, fpr,
 
2240
                try:
 
2241
                    fpr = self.fingerprint(
 
2242
                        self.peer_certificate(session))
 
2243
                except (TypeError, gnutls.Error) as error:
 
2244
                    logger.warning("Bad certificate: %s", error)
 
2245
                    return
 
2246
                logger.debug("Fingerprint: %s", fpr)
 
2247
 
 
2248
                try:
 
2249
                    client = ProxyClient(child_pipe, fpr,
2367
2250
                                         self.client_address)
2368
2251
                except KeyError:
2369
2252
                    return
2375
2258
 
2376
2259
                while True:
2377
2260
                    if not client.enabled:
2378
 
                        log.info("Client %s is disabled", client.name)
 
2261
                        logger.info("Client %s is disabled",
 
2262
                                    client.name)
2379
2263
                        if self.server.use_dbus:
2380
2264
                            # Emit D-Bus signal
2381
2265
                            client.Rejected("Disabled")
2385
2269
                        # We are approved or approval is disabled
2386
2270
                        break
2387
2271
                    elif client.approved is None:
2388
 
                        log.info("Client %s needs approval",
2389
 
                                 client.name)
 
2272
                        logger.info("Client %s needs approval",
 
2273
                                    client.name)
2390
2274
                        if self.server.use_dbus:
2391
2275
                            # Emit D-Bus signal
2392
2276
                            client.NeedApproval(
2393
2277
                                client.approval_delay.total_seconds()
2394
2278
                                * 1000, client.approved_by_default)
2395
2279
                    else:
2396
 
                        log.warning("Client %s was not approved",
2397
 
                                    client.name)
 
2280
                        logger.warning("Client %s was not approved",
 
2281
                                       client.name)
2398
2282
                        if self.server.use_dbus:
2399
2283
                            # Emit D-Bus signal
2400
2284
                            client.Rejected("Denied")
2408
2292
                    time2 = datetime.datetime.now()
2409
2293
                    if (time2 - time) >= delay:
2410
2294
                        if not client.approved_by_default:
2411
 
                            log.warning("Client %s timed out while"
2412
 
                                        " waiting for approval",
2413
 
                                        client.name)
 
2295
                            logger.warning("Client %s timed out while"
 
2296
                                           " waiting for approval",
 
2297
                                           client.name)
2414
2298
                            if self.server.use_dbus:
2415
2299
                                # Emit D-Bus signal
2416
2300
                                client.Rejected("Approval timed out")
2423
2307
                try:
2424
2308
                    session.send(client.secret)
2425
2309
                except gnutls.Error as error:
2426
 
                    log.warning("gnutls send failed", exc_info=error)
 
2310
                    logger.warning("gnutls send failed",
 
2311
                                   exc_info=error)
2427
2312
                    return
2428
2313
 
2429
 
                log.info("Sending secret to %s", client.name)
 
2314
                logger.info("Sending secret to %s", client.name)
2430
2315
                # bump the timeout using extended_timeout
2431
2316
                client.bump_timeout(client.extended_timeout)
2432
2317
                if self.server.use_dbus:
2439
2324
                try:
2440
2325
                    session.bye()
2441
2326
                except gnutls.Error as error:
2442
 
                    log.warning("GnuTLS bye failed", exc_info=error)
 
2327
                    logger.warning("GnuTLS bye failed",
 
2328
                                   exc_info=error)
2443
2329
 
2444
2330
    @staticmethod
2445
2331
    def peer_certificate(session):
2446
 
        "Return the peer's certificate as a bytestring"
2447
 
        try:
2448
 
            cert_type = gnutls.certificate_type_get2(
2449
 
                session, gnutls.CTYPE_PEERS)
2450
 
        except AttributeError:
2451
 
            cert_type = gnutls.certificate_type_get(session)
2452
 
        if gnutls.has_rawpk:
2453
 
            valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2454
 
        else:
2455
 
            valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2456
 
        # If not a valid certificate type...
2457
 
        if cert_type not in valid_cert_types:
2458
 
            log.info("Cert type %r not in %r", cert_type,
2459
 
                     valid_cert_types)
 
2332
        "Return the peer's OpenPGP certificate as a bytestring"
 
2333
        # If not an OpenPGP certificate...
 
2334
        if (gnutls.certificate_type_get(session._c_object)
 
2335
            != gnutls.CRT_OPENPGP):
2460
2336
            # ...return invalid data
2461
2337
            return b""
2462
2338
        list_size = ctypes.c_uint(1)
2463
2339
        cert_list = (gnutls.certificate_get_peers
2464
 
                     (session, ctypes.byref(list_size)))
 
2340
                     (session._c_object, ctypes.byref(list_size)))
2465
2341
        if not bool(cert_list) and list_size.value != 0:
2466
2342
            raise gnutls.Error("error getting peer certificate")
2467
2343
        if list_size.value == 0:
2470
2346
        return ctypes.string_at(cert.data, cert.size)
2471
2347
 
2472
2348
    @staticmethod
2473
 
    def key_id(certificate):
2474
 
        "Convert a certificate bytestring to a hexdigit key ID"
2475
 
        # New GnuTLS "datum" with the public key
2476
 
        datum = gnutls.datum_t(
2477
 
            ctypes.cast(ctypes.c_char_p(certificate),
2478
 
                        ctypes.POINTER(ctypes.c_ubyte)),
2479
 
            ctypes.c_uint(len(certificate)))
2480
 
        # XXX all these need to be created in the gnutls "module"
2481
 
        # New empty GnuTLS certificate
2482
 
        pubkey = gnutls.pubkey_t()
2483
 
        gnutls.pubkey_init(ctypes.byref(pubkey))
2484
 
        # Import the raw public key into the certificate
2485
 
        gnutls.pubkey_import(pubkey,
2486
 
                             ctypes.byref(datum),
2487
 
                             gnutls.X509_FMT_DER)
2488
 
        # New buffer for the key ID
2489
 
        buf = ctypes.create_string_buffer(32)
2490
 
        buf_len = ctypes.c_size_t(len(buf))
2491
 
        # Get the key ID from the raw public key into the buffer
2492
 
        gnutls.pubkey_get_key_id(
2493
 
            pubkey,
2494
 
            gnutls.KEYID_USE_SHA256,
2495
 
            ctypes.cast(ctypes.byref(buf),
2496
 
                        ctypes.POINTER(ctypes.c_ubyte)),
2497
 
            ctypes.byref(buf_len))
2498
 
        # Deinit the certificate
2499
 
        gnutls.pubkey_deinit(pubkey)
2500
 
 
2501
 
        # Convert the buffer to a Python bytestring
2502
 
        key_id = ctypes.string_at(buf, buf_len.value)
2503
 
        # Convert the bytestring to hexadecimal notation
2504
 
        hex_key_id = binascii.hexlify(key_id).upper()
2505
 
        return hex_key_id
2506
 
 
2507
 
    @staticmethod
2508
2349
    def fingerprint(openpgp):
2509
2350
        "Convert an OpenPGP bytestring to a hexdigit fingerprint"
2510
2351
        # New GnuTLS "datum" with the OpenPGP public key
2541
2382
        return hex_fpr
2542
2383
 
2543
2384
 
2544
 
class MultiprocessingMixIn:
 
2385
class MultiprocessingMixIn(object):
2545
2386
    """Like socketserver.ThreadingMixIn, but with multiprocessing"""
2546
2387
 
2547
2388
    def sub_process_main(self, request, address):
2559
2400
        return proc
2560
2401
 
2561
2402
 
2562
 
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
 
2403
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2563
2404
    """ adds a pipe to the MixIn """
2564
2405
 
2565
2406
    def process_request(self, request, client_address):
2580
2421
 
2581
2422
 
2582
2423
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2583
 
                     socketserver.TCPServer):
2584
 
    """IPv6-capable TCP server.  Accepts None as address and/or port
 
2424
                     socketserver.TCPServer, object):
 
2425
    """IPv6-capable TCP server.  Accepts 'None' as address and/or port
2585
2426
 
2586
2427
    Attributes:
2587
2428
        enabled:        Boolean; whether this server is activated yet
2638
2479
            if SO_BINDTODEVICE is None:
2639
2480
                # Fall back to a hard-coded value which seems to be
2640
2481
                # common enough.
2641
 
                log.warning("SO_BINDTODEVICE not found, trying 25")
 
2482
                logger.warning("SO_BINDTODEVICE not found, trying 25")
2642
2483
                SO_BINDTODEVICE = 25
2643
2484
            try:
2644
2485
                self.socket.setsockopt(
2646
2487
                    (self.interface + "\0").encode("utf-8"))
2647
2488
            except socket.error as error:
2648
2489
                if error.errno == errno.EPERM:
2649
 
                    log.error("No permission to bind to interface %s",
2650
 
                              self.interface)
 
2490
                    logger.error("No permission to bind to"
 
2491
                                 " interface %s", self.interface)
2651
2492
                elif error.errno == errno.ENOPROTOOPT:
2652
 
                    log.error("SO_BINDTODEVICE not available; cannot"
2653
 
                              " bind to interface %s", self.interface)
 
2493
                    logger.error("SO_BINDTODEVICE not available;"
 
2494
                                 " cannot bind to interface %s",
 
2495
                                 self.interface)
2654
2496
                elif error.errno == errno.ENODEV:
2655
 
                    log.error("Interface %s does not exist, cannot"
2656
 
                              " bind", self.interface)
 
2497
                    logger.error("Interface %s does not exist,"
 
2498
                                 " cannot bind", self.interface)
2657
2499
                else:
2658
2500
                    raise
2659
2501
        # Only bind(2) the socket if we really need to.
2660
2502
        if self.server_address[0] or self.server_address[1]:
2661
 
            if self.server_address[1]:
2662
 
                self.allow_reuse_address = True
2663
2503
            if not self.server_address[0]:
2664
2504
                if self.address_family == socket.AF_INET6:
2665
2505
                    any_address = "::"  # in6addr_any
2718
2558
    def add_pipe(self, parent_pipe, proc):
2719
2559
        # Call "handle_ipc" for both data and EOF events
2720
2560
        GLib.io_add_watch(
2721
 
            GLib.IOChannel.unix_new(parent_pipe.fileno()),
2722
 
            GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
 
2561
            parent_pipe.fileno(),
 
2562
            GLib.IO_IN | GLib.IO_HUP,
2723
2563
            functools.partial(self.handle_ipc,
2724
2564
                              parent_pipe=parent_pipe,
2725
2565
                              proc=proc))
2738
2578
        request = parent_pipe.recv()
2739
2579
        command = request[0]
2740
2580
 
2741
 
        if command == "init":
2742
 
            key_id = request[1].decode("ascii")
2743
 
            fpr = request[2].decode("ascii")
2744
 
            address = request[3]
 
2581
        if command == 'init':
 
2582
            fpr = request[1].decode("ascii")
 
2583
            address = request[2]
2745
2584
 
2746
2585
            for c in self.clients.values():
2747
 
                if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"
2748
 
                              "27AE41E4649B934CA495991B7852B855"):
2749
 
                    continue
2750
 
                if key_id and c.key_id == key_id:
2751
 
                    client = c
2752
 
                    break
2753
 
                if fpr and c.fingerprint == fpr:
 
2586
                if c.fingerprint == fpr:
2754
2587
                    client = c
2755
2588
                    break
2756
2589
            else:
2757
 
                log.info("Client not found for key ID: %s, address:"
2758
 
                         " %s", key_id or fpr, address)
 
2590
                logger.info("Client not found for fingerprint: %s, ad"
 
2591
                            "dress: %s", fpr, address)
2759
2592
                if self.use_dbus:
2760
2593
                    # Emit D-Bus signal
2761
 
                    mandos_dbus_service.ClientNotFound(key_id or fpr,
 
2594
                    mandos_dbus_service.ClientNotFound(fpr,
2762
2595
                                                       address[0])
2763
2596
                parent_pipe.send(False)
2764
2597
                return False
2765
2598
 
2766
2599
            GLib.io_add_watch(
2767
 
                GLib.IOChannel.unix_new(parent_pipe.fileno()),
2768
 
                GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
 
2600
                parent_pipe.fileno(),
 
2601
                GLib.IO_IN | GLib.IO_HUP,
2769
2602
                functools.partial(self.handle_ipc,
2770
2603
                                  parent_pipe=parent_pipe,
2771
2604
                                  proc=proc,
2774
2607
            # remove the old hook in favor of the new above hook on
2775
2608
            # same fileno
2776
2609
            return False
2777
 
        if command == "funcall":
 
2610
        if command == 'funcall':
2778
2611
            funcname = request[1]
2779
2612
            args = request[2]
2780
2613
            kwargs = request[3]
2781
2614
 
2782
 
            parent_pipe.send(("data", getattr(client_object,
 
2615
            parent_pipe.send(('data', getattr(client_object,
2783
2616
                                              funcname)(*args,
2784
2617
                                                        **kwargs)))
2785
2618
 
2786
 
        if command == "getattr":
 
2619
        if command == 'getattr':
2787
2620
            attrname = request[1]
2788
2621
            if isinstance(client_object.__getattribute__(attrname),
2789
 
                          collections.abc.Callable):
2790
 
                parent_pipe.send(("function", ))
 
2622
                          collections.Callable):
 
2623
                parent_pipe.send(('function', ))
2791
2624
            else:
2792
2625
                parent_pipe.send((
2793
 
                    "data", client_object.__getattribute__(attrname)))
 
2626
                    'data', client_object.__getattribute__(attrname)))
2794
2627
 
2795
 
        if command == "setattr":
 
2628
        if command == 'setattr':
2796
2629
            attrname = request[1]
2797
2630
            value = request[2]
2798
2631
            setattr(client_object, attrname, value)
2803
2636
def rfc3339_duration_to_delta(duration):
2804
2637
    """Parse an RFC 3339 "duration" and return a datetime.timedelta
2805
2638
 
2806
 
    >>> timedelta = datetime.timedelta
2807
 
    >>> rfc3339_duration_to_delta("P7D") == timedelta(7)
2808
 
    True
2809
 
    >>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)
2810
 
    True
2811
 
    >>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)
2812
 
    True
2813
 
    >>> rfc3339_duration_to_delta("PT24H") == timedelta(1)
2814
 
    True
2815
 
    >>> rfc3339_duration_to_delta("P1W") == timedelta(7)
2816
 
    True
2817
 
    >>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)
2818
 
    True
2819
 
    >>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)
2820
 
    True
2821
 
    >>> del timedelta
 
2639
    >>> rfc3339_duration_to_delta("P7D")
 
2640
    datetime.timedelta(7)
 
2641
    >>> rfc3339_duration_to_delta("PT60S")
 
2642
    datetime.timedelta(0, 60)
 
2643
    >>> rfc3339_duration_to_delta("PT60M")
 
2644
    datetime.timedelta(0, 3600)
 
2645
    >>> rfc3339_duration_to_delta("PT24H")
 
2646
    datetime.timedelta(1)
 
2647
    >>> rfc3339_duration_to_delta("P1W")
 
2648
    datetime.timedelta(7)
 
2649
    >>> rfc3339_duration_to_delta("PT5M30S")
 
2650
    datetime.timedelta(0, 330)
 
2651
    >>> rfc3339_duration_to_delta("P1DT3M20S")
 
2652
    datetime.timedelta(1, 200)
2822
2653
    """
2823
2654
 
2824
2655
    # Parsing an RFC 3339 duration with regular expressions is not
2904
2735
def string_to_delta(interval):
2905
2736
    """Parse a string and return a datetime.timedelta
2906
2737
 
2907
 
    >>> string_to_delta("7d") == datetime.timedelta(7)
2908
 
    True
2909
 
    >>> string_to_delta("60s") == datetime.timedelta(0, 60)
2910
 
    True
2911
 
    >>> string_to_delta("60m") == datetime.timedelta(0, 3600)
2912
 
    True
2913
 
    >>> string_to_delta("24h") == datetime.timedelta(1)
2914
 
    True
2915
 
    >>> string_to_delta("1w") == datetime.timedelta(7)
2916
 
    True
2917
 
    >>> string_to_delta("5m 30s") == datetime.timedelta(0, 330)
2918
 
    True
 
2738
    >>> string_to_delta('7d')
 
2739
    datetime.timedelta(7)
 
2740
    >>> string_to_delta('60s')
 
2741
    datetime.timedelta(0, 60)
 
2742
    >>> string_to_delta('60m')
 
2743
    datetime.timedelta(0, 3600)
 
2744
    >>> string_to_delta('24h')
 
2745
    datetime.timedelta(1)
 
2746
    >>> string_to_delta('1w')
 
2747
    datetime.timedelta(7)
 
2748
    >>> string_to_delta('5m 30s')
 
2749
    datetime.timedelta(0, 330)
2919
2750
    """
2920
2751
 
2921
2752
    try:
3023
2854
 
3024
2855
    options = parser.parse_args()
3025
2856
 
 
2857
    if options.check:
 
2858
        import doctest
 
2859
        fail_count, test_count = doctest.testmod()
 
2860
        sys.exit(os.EX_OK if fail_count == 0 else 1)
 
2861
 
3026
2862
    # Default values for config file for server-global settings
3027
 
    if gnutls.has_rawpk:
3028
 
        priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3029
 
                    ":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3030
 
    else:
3031
 
        priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3032
 
                    ":+SIGN-DSA-SHA256")
3033
2863
    server_defaults = {"interface": "",
3034
2864
                       "address": "",
3035
2865
                       "port": "",
3036
2866
                       "debug": "False",
3037
 
                       "priority": priority,
 
2867
                       "priority":
 
2868
                       "SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
 
2869
                       ":+SIGN-DSA-SHA256",
3038
2870
                       "servicename": "Mandos",
3039
2871
                       "use_dbus": "True",
3040
2872
                       "use_ipv6": "True",
3045
2877
                       "foreground": "False",
3046
2878
                       "zeroconf": "True",
3047
2879
                       }
3048
 
    del priority
3049
2880
 
3050
2881
    # Parse config file for server-global settings
3051
 
    server_config = configparser.ConfigParser(server_defaults)
 
2882
    server_config = configparser.SafeConfigParser(server_defaults)
3052
2883
    del server_defaults
3053
2884
    server_config.read(os.path.join(options.configdir, "mandos.conf"))
3054
 
    # Convert the ConfigParser object to a dict
 
2885
    # Convert the SafeConfigParser object to a dict
3055
2886
    server_settings = server_config.defaults()
3056
2887
    # Use the appropriate methods on the non-string config options
3057
2888
    for option in ("debug", "use_dbus", "use_ipv6", "restore",
3124
2955
 
3125
2956
    if server_settings["servicename"] != "Mandos":
3126
2957
        syslogger.setFormatter(
3127
 
            logging.Formatter("Mandos ({}) [%(process)d]:"
3128
 
                              " %(levelname)s: %(message)s".format(
 
2958
            logging.Formatter('Mandos ({}) [%(process)d]:'
 
2959
                              ' %(levelname)s: %(message)s'.format(
3129
2960
                                  server_settings["servicename"])))
3130
2961
 
3131
2962
    # Parse config file with clients
3132
 
    client_config = configparser.ConfigParser(Client.client_defaults)
 
2963
    client_config = configparser.SafeConfigParser(Client
 
2964
                                                  .client_defaults)
3133
2965
    client_config.read(os.path.join(server_settings["configdir"],
3134
2966
                                    "clients.conf"))
3135
2967
 
3155
2987
        try:
3156
2988
            pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3157
2989
        except IOError as e:
3158
 
            log.error("Could not open file %r", pidfilename,
3159
 
                      exc_info=e)
 
2990
            logger.error("Could not open file %r", pidfilename,
 
2991
                         exc_info=e)
3160
2992
 
3161
2993
    for name, group in (("_mandos", "_mandos"),
3162
2994
                        ("mandos", "mandos"),
3173
3005
    try:
3174
3006
        os.setgid(gid)
3175
3007
        os.setuid(uid)
3176
 
        log.debug("Did setuid/setgid to %s:%s", uid, gid)
 
3008
        if debug:
 
3009
            logger.debug("Did setuid/setgid to {}:{}".format(uid,
 
3010
                                                             gid))
3177
3011
    except OSError as error:
3178
 
        log.warning("Failed to setuid/setgid to %s:%s: %s", uid, gid,
3179
 
                    os.strerror(error.errno))
 
3012
        logger.warning("Failed to setuid/setgid to {}:{}: {}"
 
3013
                       .format(uid, gid, os.strerror(error.errno)))
3180
3014
        if error.errno != errno.EPERM:
3181
3015
            raise
3182
3016
 
3189
3023
 
3190
3024
        @gnutls.log_func
3191
3025
        def debug_gnutls(level, string):
3192
 
            log.debug("GnuTLS: %s",
3193
 
                      string[:-1].decode("utf-8", errors="replace"))
 
3026
            logger.debug("GnuTLS: %s", string[:-1])
3194
3027
 
3195
3028
        gnutls.global_set_log_function(debug_gnutls)
3196
3029
 
3205
3038
        # Close all input and output, do double fork, etc.
3206
3039
        daemon()
3207
3040
 
3208
 
    if gi.version_info < (3, 10, 2):
3209
 
        # multiprocessing will use threads, so before we use GLib we
3210
 
        # need to inform GLib that threads will be used.
3211
 
        GLib.threads_init()
 
3041
    # multiprocessing will use threads, so before we use GLib we need
 
3042
    # to inform GLib that threads will be used.
 
3043
    GLib.threads_init()
3212
3044
 
3213
3045
    global main_loop
3214
3046
    # From the Avahi example code
3225
3057
                "se.bsnet.fukt.Mandos", bus,
3226
3058
                do_not_queue=True)
3227
3059
        except dbus.exceptions.DBusException as e:
3228
 
            log.error("Disabling D-Bus:", exc_info=e)
 
3060
            logger.error("Disabling D-Bus:", exc_info=e)
3229
3061
            use_dbus = False
3230
3062
            server_settings["use_dbus"] = False
3231
3063
            tcp_server.use_dbus = False
3290
3122
                             if isinstance(s, bytes)
3291
3123
                             else s) for s in
3292
3124
                            value["client_structure"]]
3293
 
                        # .name, .host, and .checker_command
3294
 
                        for k in ("name", "host", "checker_command"):
 
3125
                        # .name & .host
 
3126
                        for k in ("name", "host"):
3295
3127
                            if isinstance(value[k], bytes):
3296
3128
                                value[k] = value[k].decode("utf-8")
3297
 
                        if "key_id" not in value:
3298
 
                            value["key_id"] = ""
3299
 
                        elif "fingerprint" not in value:
3300
 
                            value["fingerprint"] = ""
3301
3129
                    #  old_client_settings
3302
3130
                    # .keys()
3303
3131
                    old_client_settings = {
3307
3135
                        for key, value in
3308
3136
                        bytes_old_client_settings.items()}
3309
3137
                    del bytes_old_client_settings
3310
 
                    # .host and .checker_command
 
3138
                    # .host
3311
3139
                    for value in old_client_settings.values():
3312
 
                        for attribute in ("host", "checker_command"):
3313
 
                            if isinstance(value[attribute], bytes):
3314
 
                                value[attribute] = (value[attribute]
3315
 
                                                    .decode("utf-8"))
 
3140
                        if isinstance(value["host"], bytes):
 
3141
                            value["host"] = (value["host"]
 
3142
                                             .decode("utf-8"))
3316
3143
            os.remove(stored_state_path)
3317
3144
        except IOError as e:
3318
3145
            if e.errno == errno.ENOENT:
3319
 
                log.warning("Could not load persistent state:"
3320
 
                            " %s", os.strerror(e.errno))
 
3146
                logger.warning("Could not load persistent state:"
 
3147
                               " {}".format(os.strerror(e.errno)))
3321
3148
            else:
3322
 
                log.critical("Could not load persistent state:",
3323
 
                             exc_info=e)
 
3149
                logger.critical("Could not load persistent state:",
 
3150
                                exc_info=e)
3324
3151
                raise
3325
3152
        except EOFError as e:
3326
 
            log.warning("Could not load persistent state: EOFError:",
3327
 
                        exc_info=e)
 
3153
            logger.warning("Could not load persistent state: "
 
3154
                           "EOFError:",
 
3155
                           exc_info=e)
3328
3156
 
3329
3157
    with PGPEngine() as pgp:
3330
3158
        for client_name, client in clients_data.items():
3357
3185
            if client["enabled"]:
3358
3186
                if datetime.datetime.utcnow() >= client["expires"]:
3359
3187
                    if not client["last_checked_ok"]:
3360
 
                        log.warning("disabling client %s - Client"
3361
 
                                    " never performed a successful"
3362
 
                                    " checker", client_name)
 
3188
                        logger.warning(
 
3189
                            "disabling client {} - Client never "
 
3190
                            "performed a successful checker".format(
 
3191
                                client_name))
3363
3192
                        client["enabled"] = False
3364
3193
                    elif client["last_checker_status"] != 0:
3365
 
                        log.warning("disabling client %s - Client"
3366
 
                                    " last checker failed with error"
3367
 
                                    " code %s", client_name,
3368
 
                                    client["last_checker_status"])
 
3194
                        logger.warning(
 
3195
                            "disabling client {} - Client last"
 
3196
                            " checker failed with error code"
 
3197
                            " {}".format(
 
3198
                                client_name,
 
3199
                                client["last_checker_status"]))
3369
3200
                        client["enabled"] = False
3370
3201
                    else:
3371
3202
                        client["expires"] = (
3372
3203
                            datetime.datetime.utcnow()
3373
3204
                            + client["timeout"])
3374
 
                        log.debug("Last checker succeeded, keeping %s"
3375
 
                                  " enabled", client_name)
 
3205
                        logger.debug("Last checker succeeded,"
 
3206
                                     " keeping {} enabled".format(
 
3207
                                         client_name))
3376
3208
            try:
3377
3209
                client["secret"] = pgp.decrypt(
3378
3210
                    client["encrypted_secret"],
3379
3211
                    client_settings[client_name]["secret"])
3380
3212
            except PGPError:
3381
3213
                # If decryption fails, we use secret from new settings
3382
 
                log.debug("Failed to decrypt %s old secret",
3383
 
                          client_name)
 
3214
                logger.debug("Failed to decrypt {} old secret".format(
 
3215
                    client_name))
3384
3216
                client["secret"] = (client_settings[client_name]
3385
3217
                                    ["secret"])
3386
3218
 
3400
3232
            server_settings=server_settings)
3401
3233
 
3402
3234
    if not tcp_server.clients:
3403
 
        log.warning("No clients defined")
 
3235
        logger.warning("No clients defined")
3404
3236
 
3405
3237
    if not foreground:
3406
3238
        if pidfile is not None:
3409
3241
                with pidfile:
3410
3242
                    print(pid, file=pidfile)
3411
3243
            except IOError:
3412
 
                log.error("Could not write to file %r with PID %d",
3413
 
                          pidfilename, pid)
 
3244
                logger.error("Could not write to file %r with PID %d",
 
3245
                             pidfilename, pid)
3414
3246
        del pidfile
3415
3247
        del pidfilename
3416
3248
 
3436
3268
                pass
3437
3269
 
3438
3270
            @dbus.service.signal(_interface, signature="ss")
3439
 
            def ClientNotFound(self, key_id, address):
 
3271
            def ClientNotFound(self, fingerprint, address):
3440
3272
                "D-Bus signal"
3441
3273
                pass
3442
3274
 
3566
3398
 
3567
3399
        try:
3568
3400
            with tempfile.NamedTemporaryFile(
3569
 
                    mode="wb",
 
3401
                    mode='wb',
3570
3402
                    suffix=".pickle",
3571
 
                    prefix="clients-",
 
3403
                    prefix='clients-',
3572
3404
                    dir=os.path.dirname(stored_state_path),
3573
3405
                    delete=False) as stored_state:
3574
3406
                pickle.dump((clients, client_settings), stored_state,
3582
3414
                except NameError:
3583
3415
                    pass
3584
3416
            if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3585
 
                log.warning("Could not save persistent state: %s",
3586
 
                            os.strerror(e.errno))
 
3417
                logger.warning("Could not save persistent state: {}"
 
3418
                               .format(os.strerror(e.errno)))
3587
3419
            else:
3588
 
                log.warning("Could not save persistent state:",
3589
 
                            exc_info=e)
 
3420
                logger.warning("Could not save persistent state:",
 
3421
                               exc_info=e)
3590
3422
                raise
3591
3423
 
3592
3424
        # Delete all clients, and settings from config
3618
3450
    if zeroconf:
3619
3451
        service.port = tcp_server.socket.getsockname()[1]
3620
3452
    if use_ipv6:
3621
 
        log.info("Now listening on address %r, port %d, flowinfo %d,"
3622
 
                 " scope_id %d", *tcp_server.socket.getsockname())
 
3453
        logger.info("Now listening on address %r, port %d,"
 
3454
                    " flowinfo %d, scope_id %d",
 
3455
                    *tcp_server.socket.getsockname())
3623
3456
    else:                       # IPv4
3624
 
        log.info("Now listening on address %r, port %d",
3625
 
                 *tcp_server.socket.getsockname())
 
3457
        logger.info("Now listening on address %r, port %d",
 
3458
                    *tcp_server.socket.getsockname())
3626
3459
 
3627
3460
    # service.interface = tcp_server.socket.getsockname()[3]
3628
3461
 
3632
3465
            try:
3633
3466
                service.activate()
3634
3467
            except dbus.exceptions.DBusException as error:
3635
 
                log.critical("D-Bus Exception", exc_info=error)
 
3468
                logger.critical("D-Bus Exception", exc_info=error)
3636
3469
                cleanup()
3637
3470
                sys.exit(1)
3638
3471
            # End of Avahi example code
3639
3472
 
3640
 
        GLib.io_add_watch(
3641
 
            GLib.IOChannel.unix_new(tcp_server.fileno()),
3642
 
            GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3643
 
            lambda *args, **kwargs: (tcp_server.handle_request
3644
 
                                     (*args[2:], **kwargs) or True))
 
3473
        GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
 
3474
                          lambda *args, **kwargs:
 
3475
                          (tcp_server.handle_request
 
3476
                           (*args[2:], **kwargs) or True))
3645
3477
 
3646
 
        log.debug("Starting main loop")
 
3478
        logger.debug("Starting main loop")
3647
3479
        main_loop.run()
3648
3480
    except AvahiError as error:
3649
 
        log.critical("Avahi Error", exc_info=error)
 
3481
        logger.critical("Avahi Error", exc_info=error)
3650
3482
        cleanup()
3651
3483
        sys.exit(1)
3652
3484
    except KeyboardInterrupt:
3653
3485
        if debug:
3654
3486
            print("", file=sys.stderr)
3655
 
        log.debug("Server received KeyboardInterrupt")
3656
 
    log.debug("Server exiting")
 
3487
        logger.debug("Server received KeyboardInterrupt")
 
3488
    logger.debug("Server exiting")
3657
3489
    # Must run before the D-Bus bus name gets deregistered
3658
3490
    cleanup()
3659
3491
 
3660
 
 
3661
 
def parse_test_args():
3662
 
    # type: () -> argparse.Namespace
3663
 
    parser = argparse.ArgumentParser(add_help=False)
3664
 
    parser.add_argument("--check", action="store_true")
3665
 
    parser.add_argument("--prefix", )
3666
 
    args, unknown_args = parser.parse_known_args()
3667
 
    if args.check:
3668
 
        # Remove test options from sys.argv
3669
 
        sys.argv[1:] = unknown_args
3670
 
    return args
3671
 
 
3672
 
# Add all tests from doctest strings
3673
 
def load_tests(loader, tests, none):
3674
 
    import doctest
3675
 
    tests.addTests(doctest.DocTestSuite())
3676
 
    return tests
3677
 
 
3678
 
if __name__ == "__main__":
3679
 
    options = parse_test_args()
3680
 
    try:
3681
 
        if options.check:
3682
 
            extra_test_prefix = options.prefix
3683
 
            if extra_test_prefix is not None:
3684
 
                if not (unittest.main(argv=[""], exit=False)
3685
 
                        .result.wasSuccessful()):
3686
 
                    sys.exit(1)
3687
 
                class ExtraTestLoader(unittest.TestLoader):
3688
 
                    testMethodPrefix = extra_test_prefix
3689
 
                # Call using ./scriptname --test [--verbose]
3690
 
                unittest.main(argv=[""], testLoader=ExtraTestLoader())
3691
 
            else:
3692
 
                unittest.main(argv=[""])
3693
 
        else:
3694
 
            main()
3695
 
    finally:
3696
 
        logging.shutdown()
3697
 
 
3698
 
# Local Variables:
3699
 
# run-tests:
3700
 
# (lambda (&optional extra)
3701
 
#   (if (not (funcall run-tests-in-test-buffer default-directory
3702
 
#             extra))
3703
 
#       (funcall show-test-buffer-in-test-window)
3704
 
#     (funcall remove-test-window)
3705
 
#     (if extra (message "Extra tests run successfully!"))))
3706
 
# run-tests-in-test-buffer:
3707
 
# (lambda (dir &optional extra)
3708
 
#   (with-current-buffer (get-buffer-create "*Test*")
3709
 
#     (setq buffer-read-only nil
3710
 
#           default-directory dir)
3711
 
#     (erase-buffer)
3712
 
#     (compilation-mode))
3713
 
#   (let ((inhibit-read-only t))
3714
 
#     (= (process-file-shell-command
3715
 
#         (funcall get-command-line extra)
3716
 
#         nil "*Test*") 0)))
3717
 
# get-command-line:
3718
 
# (lambda (&optional extra)
3719
 
#   (let ((quoted-script
3720
 
#          (shell-quote-argument (funcall get-script-name))))
3721
 
#     (format
3722
 
#      (concat "%s --check" (if extra " --prefix=atest" ""))
3723
 
#      quoted-script)))
3724
 
# get-script-name:
3725
 
# (lambda ()
3726
 
#   (if (fboundp 'file-local-name)
3727
 
#       (file-local-name (buffer-file-name))
3728
 
#     (or (file-remote-p (buffer-file-name) 'localname)
3729
 
#         (buffer-file-name))))
3730
 
# remove-test-window:
3731
 
# (lambda ()
3732
 
#   (let ((test-window (get-buffer-window "*Test*")))
3733
 
#     (if test-window (delete-window test-window))))
3734
 
# show-test-buffer-in-test-window:
3735
 
# (lambda ()
3736
 
#   (when (not (get-buffer-window-list "*Test*"))
3737
 
#     (setq next-error-last-buffer (get-buffer "*Test*"))
3738
 
#     (let* ((side (if (>= (window-width) 146) 'right 'bottom))
3739
 
#            (display-buffer-overriding-action
3740
 
#             `((display-buffer-in-side-window) (side . ,side)
3741
 
#               (window-height . fit-window-to-buffer)
3742
 
#               (window-width . fit-window-to-buffer))))
3743
 
#       (display-buffer "*Test*"))))
3744
 
# eval:
3745
 
# (progn
3746
 
#   (let* ((run-extra-tests (lambda () (interactive)
3747
 
#                             (funcall run-tests t)))
3748
 
#          (inner-keymap `(keymap (116 . ,run-extra-tests))) ; t
3749
 
#          (outer-keymap `(keymap (3 . ,inner-keymap))))     ; C-c
3750
 
#     (setq minor-mode-overriding-map-alist
3751
 
#           (cons `(run-tests . ,outer-keymap)
3752
 
#                 minor-mode-overriding-map-alist)))
3753
 
#   (add-hook 'after-save-hook run-tests 90 t))
3754
 
# End:
 
3492
 
 
3493
if __name__ == '__main__':
 
3494
    main()