/mandos/trunk

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  • Committer: Teddy Hogeborn
  • Date: 2016-03-04 20:50:45 UTC
  • Revision ID: teddy@recompile.se-20160304205045-jksfb2qzv9erkf21
Only use -fsanitize=... options if they work.

* Makefile (ALL_SANITIZE_OPTIONS): New.
  (SANITIZE): Loop through all known sanitizing options and only use
              those which do not give an error.

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Lines of Context:
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 © 2008-2019 Teddy Hogeborn
15
 
# Copyright © 2008-2019 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 © 2008-2016 Teddy Hogeborn
 
15
# Copyright © 2008-2016 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
 
37
from future_builtins import *
42
38
 
43
39
try:
44
40
    import SocketServer as socketserver
77
73
import itertools
78
74
import collections
79
75
import codecs
80
 
import unittest
81
 
import random
82
 
import shlex
83
76
 
84
77
import dbus
85
78
import dbus.service
86
 
import gi
87
 
from gi.repository import GLib
 
79
try:
 
80
    import gobject
 
81
except ImportError:
 
82
    from gi.repository import GObject as gobject
 
83
import avahi
88
84
from dbus.mainloop.glib import DBusGMainLoop
89
85
import ctypes
90
86
import ctypes.util
91
87
import xml.dom.minidom
92
88
import inspect
93
89
 
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:
 
90
try:
122
91
    SO_BINDTODEVICE = socket.SO_BINDTODEVICE
123
92
except AttributeError:
124
93
    try:
125
 
        # This is where SO_BINDTODEVICE was up to and including Python
126
 
        # 2.6, and also 3.2:
127
94
        from IN import SO_BINDTODEVICE
128
95
    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 = "1.8.9"
 
96
        SO_BINDTODEVICE = None
 
97
 
 
98
if sys.version_info.major == 2:
 
99
    str = unicode
 
100
 
 
101
version = "1.7.3"
147
102
stored_state_file = "clients.pickle"
148
103
 
149
104
logger = logging.getLogger()
150
 
logging.captureWarnings(True)   # Show warnings via the logging system
151
105
syslogger = None
152
106
 
153
107
try:
154
108
    if_nametoindex = ctypes.cdll.LoadLibrary(
155
109
        ctypes.util.find_library("c")).if_nametoindex
156
110
except (OSError, AttributeError):
157
 
 
 
111
    
158
112
    def if_nametoindex(interface):
159
113
        "Get an interface index the hard way, i.e. using fcntl()"
160
114
        SIOCGIFINDEX = 0x8933  # From /usr/include/linux/sockios.h
165
119
        return interface_index
166
120
 
167
121
 
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
122
def initlogger(debug, level=logging.WARNING):
185
123
    """init logger and add loglevel"""
186
 
 
 
124
    
187
125
    global syslogger
188
126
    syslogger = (logging.handlers.SysLogHandler(
189
 
        facility=logging.handlers.SysLogHandler.LOG_DAEMON,
190
 
        address="/dev/log"))
 
127
        facility = logging.handlers.SysLogHandler.LOG_DAEMON,
 
128
        address = "/dev/log"))
191
129
    syslogger.setFormatter(logging.Formatter
192
130
                           ('Mandos [%(process)d]: %(levelname)s:'
193
131
                            ' %(message)s'))
194
132
    logger.addHandler(syslogger)
195
 
 
 
133
    
196
134
    if debug:
197
135
        console = logging.StreamHandler()
198
136
        console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
208
146
    pass
209
147
 
210
148
 
211
 
class PGPEngine:
 
149
class PGPEngine(object):
212
150
    """A simple class for OpenPGP symmetric encryption & decryption"""
213
 
 
 
151
    
214
152
    def __init__(self):
215
153
        self.tempdir = tempfile.mkdtemp(prefix="mandos-")
216
154
        self.gpg = "gpg"
217
155
        try:
218
156
            output = subprocess.check_output(["gpgconf"])
219
157
            for line in output.splitlines():
220
 
                name, text, path = line.split(b":")
221
 
                if name == b"gpg":
 
158
                name, text, path = line.split(":")
 
159
                if name == "gpg":
222
160
                    self.gpg = path
223
161
                    break
224
162
        except OSError as e:
227
165
        self.gnupgargs = ['--batch',
228
166
                          '--homedir', self.tempdir,
229
167
                          '--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
 
 
 
168
                          '--quiet',
 
169
                          '--no-use-agent']
 
170
    
235
171
    def __enter__(self):
236
172
        return self
237
 
 
 
173
    
238
174
    def __exit__(self, exc_type, exc_value, traceback):
239
175
        self._cleanup()
240
176
        return False
241
 
 
 
177
    
242
178
    def __del__(self):
243
179
        self._cleanup()
244
 
 
 
180
    
245
181
    def _cleanup(self):
246
182
        if self.tempdir is not None:
247
183
            # Delete contents of tempdir
248
184
            for root, dirs, files in os.walk(self.tempdir,
249
 
                                             topdown=False):
 
185
                                             topdown = False):
250
186
                for filename in files:
251
187
                    os.remove(os.path.join(root, filename))
252
188
                for dirname in dirs:
254
190
            # Remove tempdir
255
191
            os.rmdir(self.tempdir)
256
192
            self.tempdir = None
257
 
 
 
193
    
258
194
    def password_encode(self, password):
259
195
        # Passphrase can not be empty and can not contain newlines or
260
196
        # NUL bytes.  So we prefix it and hex encode it.
265
201
                       .replace(b"\n", b"\\n")
266
202
                       .replace(b"\0", b"\\x00"))
267
203
        return encoded
268
 
 
 
204
    
269
205
    def encrypt(self, data, password):
270
206
        passphrase = self.password_encode(password)
271
207
        with tempfile.NamedTemporaryFile(
276
212
                                     '--passphrase-file',
277
213
                                     passfile.name]
278
214
                                    + self.gnupgargs,
279
 
                                    stdin=subprocess.PIPE,
280
 
                                    stdout=subprocess.PIPE,
281
 
                                    stderr=subprocess.PIPE)
282
 
            ciphertext, err = proc.communicate(input=data)
 
215
                                    stdin = subprocess.PIPE,
 
216
                                    stdout = subprocess.PIPE,
 
217
                                    stderr = subprocess.PIPE)
 
218
            ciphertext, err = proc.communicate(input = data)
283
219
        if proc.returncode != 0:
284
220
            raise PGPError(err)
285
221
        return ciphertext
286
 
 
 
222
    
287
223
    def decrypt(self, data, password):
288
224
        passphrase = self.password_encode(password)
289
225
        with tempfile.NamedTemporaryFile(
290
 
                dir=self.tempdir) as passfile:
 
226
                dir = self.tempdir) as passfile:
291
227
            passfile.write(passphrase)
292
228
            passfile.flush()
293
229
            proc = subprocess.Popen([self.gpg, '--decrypt',
294
230
                                     '--passphrase-file',
295
231
                                     passfile.name]
296
232
                                    + self.gnupgargs,
297
 
                                    stdin=subprocess.PIPE,
298
 
                                    stdout=subprocess.PIPE,
299
 
                                    stderr=subprocess.PIPE)
300
 
            decrypted_plaintext, err = proc.communicate(input=data)
 
233
                                    stdin = subprocess.PIPE,
 
234
                                    stdout = subprocess.PIPE,
 
235
                                    stderr = subprocess.PIPE)
 
236
            decrypted_plaintext, err = proc.communicate(input = data)
301
237
        if proc.returncode != 0:
302
238
            raise PGPError(err)
303
239
        return decrypted_plaintext
304
240
 
305
241
 
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
 
 
332
242
class AvahiError(Exception):
333
243
    def __init__(self, value, *args, **kwargs):
334
244
        self.value = value
344
254
    pass
345
255
 
346
256
 
347
 
class AvahiService:
 
257
class AvahiService(object):
348
258
    """An Avahi (Zeroconf) service.
349
 
 
 
259
    
350
260
    Attributes:
351
261
    interface: integer; avahi.IF_UNSPEC or an interface index.
352
262
               Used to optionally bind to the specified interface.
364
274
    server: D-Bus Server
365
275
    bus: dbus.SystemBus()
366
276
    """
367
 
 
 
277
    
368
278
    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):
 
279
                 interface = avahi.IF_UNSPEC,
 
280
                 name = None,
 
281
                 servicetype = None,
 
282
                 port = None,
 
283
                 TXT = None,
 
284
                 domain = "",
 
285
                 host = "",
 
286
                 max_renames = 32768,
 
287
                 protocol = avahi.PROTO_UNSPEC,
 
288
                 bus = None):
379
289
        self.interface = interface
380
290
        self.name = name
381
291
        self.type = servicetype
390
300
        self.server = None
391
301
        self.bus = bus
392
302
        self.entry_group_state_changed_match = None
393
 
 
 
303
    
394
304
    def rename(self, remove=True):
395
305
        """Derived from the Avahi example code"""
396
306
        if self.rename_count >= self.max_renames:
416
326
                logger.critical("D-Bus Exception", exc_info=error)
417
327
                self.cleanup()
418
328
                os._exit(1)
419
 
 
 
329
    
420
330
    def remove(self):
421
331
        """Derived from the Avahi example code"""
422
332
        if self.entry_group_state_changed_match is not None:
424
334
            self.entry_group_state_changed_match = None
425
335
        if self.group is not None:
426
336
            self.group.Reset()
427
 
 
 
337
    
428
338
    def add(self):
429
339
        """Derived from the Avahi example code"""
430
340
        self.remove()
447
357
            dbus.UInt16(self.port),
448
358
            avahi.string_array_to_txt_array(self.TXT))
449
359
        self.group.Commit()
450
 
 
 
360
    
451
361
    def entry_group_state_changed(self, state, error):
452
362
        """Derived from the Avahi example code"""
453
363
        logger.debug("Avahi entry group state change: %i", state)
454
 
 
 
364
        
455
365
        if state == avahi.ENTRY_GROUP_ESTABLISHED:
456
366
            logger.debug("Zeroconf service established.")
457
367
        elif state == avahi.ENTRY_GROUP_COLLISION:
461
371
            logger.critical("Avahi: Error in group state changed %s",
462
372
                            str(error))
463
373
            raise AvahiGroupError("State changed: {!s}".format(error))
464
 
 
 
374
    
465
375
    def cleanup(self):
466
376
        """Derived from the Avahi example code"""
467
377
        if self.group is not None:
472
382
                pass
473
383
            self.group = None
474
384
        self.remove()
475
 
 
 
385
    
476
386
    def server_state_changed(self, state, error=None):
477
387
        """Derived from the Avahi example code"""
478
388
        logger.debug("Avahi server state change: %i", state)
507
417
                logger.debug("Unknown state: %r", state)
508
418
            else:
509
419
                logger.debug("Unknown state: %r: %r", state, error)
510
 
 
 
420
    
511
421
    def activate(self):
512
422
        """Derived from the Avahi example code"""
513
423
        if self.server is None:
524
434
class AvahiServiceToSyslog(AvahiService):
525
435
    def rename(self, *args, **kwargs):
526
436
        """Add the new name to the syslog messages"""
527
 
        ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
 
437
        ret = AvahiService.rename(self, *args, **kwargs)
528
438
        syslogger.setFormatter(logging.Formatter(
529
439
            'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
530
440
            .format(self.name)))
531
441
        return ret
532
442
 
533
 
 
534
443
# 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
 
 
 
444
class GnuTLS(object):
 
445
    """This isn't so much a class as it is a module-like namespace.
 
446
    It is instantiated once, and simulates having a GnuTLS module."""
 
447
    
 
448
    _library = ctypes.cdll.LoadLibrary(
 
449
        ctypes.util.find_library("gnutls"))
 
450
    _need_version = "3.3.0"
 
451
    def __init__(self):
 
452
        # Need to use class name "GnuTLS" here, since this method is
 
453
        # called before the assignment to the "gnutls" global variable
 
454
        # happens.
 
455
        if GnuTLS.check_version(self._need_version) is None:
 
456
            raise GnuTLS.Error("Needs GnuTLS {} or later"
 
457
                               .format(self._need_version))
 
458
    
544
459
    # Unless otherwise indicated, the constants and types below are
545
460
    # all from the gnutls/gnutls.h C header file.
546
 
 
 
461
    
547
462
    # Constants
548
463
    E_SUCCESS = 0
549
464
    E_INTERRUPTED = -52
550
465
    E_AGAIN = -28
551
466
    CRT_OPENPGP = 2
552
 
    CRT_RAWPK = 3
553
467
    CLIENT = 2
554
468
    SHUT_RDWR = 0
555
469
    CRD_CERTIFICATE = 1
556
470
    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
471
    OPENPGP_FMT_RAW = 0         # gnutls/openpgp.h
563
 
 
 
472
    
564
473
    # Types
565
474
    class session_int(ctypes.Structure):
566
475
        _fields_ = []
567
476
    session_t = ctypes.POINTER(session_int)
568
 
 
569
477
    class certificate_credentials_st(ctypes.Structure):
570
478
        _fields_ = []
571
479
    certificate_credentials_t = ctypes.POINTER(
572
480
        certificate_credentials_st)
573
481
    certificate_type_t = ctypes.c_int
574
 
 
575
482
    class datum_t(ctypes.Structure):
576
483
        _fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
577
484
                    ('size', ctypes.c_uint)]
578
 
 
579
485
    class openpgp_crt_int(ctypes.Structure):
580
486
        _fields_ = []
581
487
    openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
582
 
    openpgp_crt_fmt_t = ctypes.c_int  # gnutls/openpgp.h
 
488
    openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
583
489
    log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
584
 
    credentials_type_t = ctypes.c_int
 
490
    credentials_type_t = ctypes.c_int # 
585
491
    transport_ptr_t = ctypes.c_void_p
586
492
    close_request_t = ctypes.c_int
587
 
 
 
493
    
588
494
    # Exceptions
589
495
    class Error(Exception):
590
 
        def __init__(self, message=None, code=None, args=()):
 
496
        # We need to use the class name "GnuTLS" here, since this
 
497
        # exception might be raised from within GnuTLS.__init__,
 
498
        # which is called before the assignment to the "gnutls"
 
499
        # global variable has happened.
 
500
        def __init__(self, message = None, code = None, args=()):
591
501
            # Default usage is by a message string, but if a return
592
502
            # code is passed, convert it to a string with
593
503
            # gnutls.strerror()
594
504
            self.code = code
595
505
            if message is None and code is not None:
596
 
                message = gnutls.strerror(code)
597
 
            return super(gnutls.Error, self).__init__(
 
506
                message = GnuTLS.strerror(code)
 
507
            return super(GnuTLS.Error, self).__init__(
598
508
                message, *args)
599
 
 
 
509
    
600
510
    class CertificateSecurityError(Error):
601
511
        pass
602
 
 
 
512
    
603
513
    # Classes
604
 
    class Credentials:
 
514
    class Credentials(object):
605
515
        def __init__(self):
606
516
            self._c_object = gnutls.certificate_credentials_t()
607
517
            gnutls.certificate_allocate_credentials(
608
518
                ctypes.byref(self._c_object))
609
519
            self.type = gnutls.CRD_CERTIFICATE
610
 
 
 
520
        
611
521
        def __del__(self):
612
522
            gnutls.certificate_free_credentials(self._c_object)
613
 
 
614
 
    class ClientSession:
615
 
        def __init__(self, socket, credentials=None):
 
523
    
 
524
    class ClientSession(object):
 
525
        def __init__(self, socket, credentials = None):
616
526
            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
 
527
            gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
624
528
            gnutls.set_default_priority(self._c_object)
625
529
            gnutls.transport_set_ptr(self._c_object, socket.fileno())
626
530
            gnutls.handshake_set_private_extensions(self._c_object,
632
536
                                   ctypes.cast(credentials._c_object,
633
537
                                               ctypes.c_void_p))
634
538
            self.credentials = credentials
635
 
 
 
539
        
636
540
        def __del__(self):
637
541
            gnutls.deinit(self._c_object)
638
 
 
 
542
        
639
543
        def handshake(self):
640
544
            return gnutls.handshake(self._c_object)
641
 
 
 
545
        
642
546
        def send(self, data):
643
547
            data = bytes(data)
644
548
            data_len = len(data)
646
550
                data_len -= gnutls.record_send(self._c_object,
647
551
                                               data[-data_len:],
648
552
                                               data_len)
649
 
 
 
553
        
650
554
        def bye(self):
651
555
            return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
652
 
 
 
556
    
653
557
    # Error handling functions
654
558
    def _error_code(result):
655
559
        """A function to raise exceptions on errors, suitable
657
561
        if result >= 0:
658
562
            return result
659
563
        if result == gnutls.E_NO_CERTIFICATE_FOUND:
660
 
            raise gnutls.CertificateSecurityError(code=result)
661
 
        raise gnutls.Error(code=result)
662
 
 
 
564
            raise gnutls.CertificateSecurityError(code = result)
 
565
        raise gnutls.Error(code = result)
 
566
    
663
567
    def _retry_on_error(result, func, arguments):
664
568
        """A function to retry on some errors, suitable
665
569
        for the 'errcheck' attribute on ctypes functions"""
668
572
                return _error_code(result)
669
573
            result = func(*arguments)
670
574
        return result
671
 
 
 
575
    
672
576
    # Unless otherwise indicated, the function declarations below are
673
577
    # all from the gnutls/gnutls.h C header file.
674
 
 
 
578
    
675
579
    # Functions
676
580
    priority_set_direct = _library.gnutls_priority_set_direct
677
581
    priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
678
582
                                    ctypes.POINTER(ctypes.c_char_p)]
679
583
    priority_set_direct.restype = _error_code
680
 
 
 
584
    
681
585
    init = _library.gnutls_init
682
586
    init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
683
587
    init.restype = _error_code
684
 
 
 
588
    
685
589
    set_default_priority = _library.gnutls_set_default_priority
686
590
    set_default_priority.argtypes = [session_t]
687
591
    set_default_priority.restype = _error_code
688
 
 
 
592
    
689
593
    record_send = _library.gnutls_record_send
690
594
    record_send.argtypes = [session_t, ctypes.c_void_p,
691
595
                            ctypes.c_size_t]
692
596
    record_send.restype = ctypes.c_ssize_t
693
597
    record_send.errcheck = _retry_on_error
694
 
 
 
598
    
695
599
    certificate_allocate_credentials = (
696
600
        _library.gnutls_certificate_allocate_credentials)
697
601
    certificate_allocate_credentials.argtypes = [
698
602
        ctypes.POINTER(certificate_credentials_t)]
699
603
    certificate_allocate_credentials.restype = _error_code
700
 
 
 
604
    
701
605
    certificate_free_credentials = (
702
606
        _library.gnutls_certificate_free_credentials)
703
 
    certificate_free_credentials.argtypes = [
704
 
        certificate_credentials_t]
 
607
    certificate_free_credentials.argtypes = [certificate_credentials_t]
705
608
    certificate_free_credentials.restype = None
706
 
 
 
609
    
707
610
    handshake_set_private_extensions = (
708
611
        _library.gnutls_handshake_set_private_extensions)
709
612
    handshake_set_private_extensions.argtypes = [session_t,
710
613
                                                 ctypes.c_int]
711
614
    handshake_set_private_extensions.restype = None
712
 
 
 
615
    
713
616
    credentials_set = _library.gnutls_credentials_set
714
617
    credentials_set.argtypes = [session_t, credentials_type_t,
715
618
                                ctypes.c_void_p]
716
619
    credentials_set.restype = _error_code
717
 
 
 
620
    
718
621
    strerror = _library.gnutls_strerror
719
622
    strerror.argtypes = [ctypes.c_int]
720
623
    strerror.restype = ctypes.c_char_p
721
 
 
 
624
    
722
625
    certificate_type_get = _library.gnutls_certificate_type_get
723
626
    certificate_type_get.argtypes = [session_t]
724
627
    certificate_type_get.restype = _error_code
725
 
 
 
628
    
726
629
    certificate_get_peers = _library.gnutls_certificate_get_peers
727
630
    certificate_get_peers.argtypes = [session_t,
728
631
                                      ctypes.POINTER(ctypes.c_uint)]
729
632
    certificate_get_peers.restype = ctypes.POINTER(datum_t)
730
 
 
 
633
    
731
634
    global_set_log_level = _library.gnutls_global_set_log_level
732
635
    global_set_log_level.argtypes = [ctypes.c_int]
733
636
    global_set_log_level.restype = None
734
 
 
 
637
    
735
638
    global_set_log_function = _library.gnutls_global_set_log_function
736
639
    global_set_log_function.argtypes = [log_func]
737
640
    global_set_log_function.restype = None
738
 
 
 
641
    
739
642
    deinit = _library.gnutls_deinit
740
643
    deinit.argtypes = [session_t]
741
644
    deinit.restype = None
742
 
 
 
645
    
743
646
    handshake = _library.gnutls_handshake
744
647
    handshake.argtypes = [session_t]
745
648
    handshake.restype = _error_code
746
649
    handshake.errcheck = _retry_on_error
747
 
 
 
650
    
748
651
    transport_set_ptr = _library.gnutls_transport_set_ptr
749
652
    transport_set_ptr.argtypes = [session_t, transport_ptr_t]
750
653
    transport_set_ptr.restype = None
751
 
 
 
654
    
752
655
    bye = _library.gnutls_bye
753
656
    bye.argtypes = [session_t, close_request_t]
754
657
    bye.restype = _error_code
755
658
    bye.errcheck = _retry_on_error
756
 
 
 
659
    
757
660
    check_version = _library.gnutls_check_version
758
661
    check_version.argtypes = [ctypes.c_char_p]
759
662
    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
 
 
 
663
    
 
664
    # All the function declarations below are from gnutls/openpgp.h
 
665
    
 
666
    openpgp_crt_init = _library.gnutls_openpgp_crt_init
 
667
    openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
 
668
    openpgp_crt_init.restype = _error_code
 
669
    
 
670
    openpgp_crt_import = _library.gnutls_openpgp_crt_import
 
671
    openpgp_crt_import.argtypes = [openpgp_crt_t,
 
672
                                   ctypes.POINTER(datum_t),
 
673
                                   openpgp_crt_fmt_t]
 
674
    openpgp_crt_import.restype = _error_code
 
675
    
 
676
    openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
 
677
    openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
 
678
                                        ctypes.POINTER(ctypes.c_uint)]
 
679
    openpgp_crt_verify_self.restype = _error_code
 
680
    
 
681
    openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
 
682
    openpgp_crt_deinit.argtypes = [openpgp_crt_t]
 
683
    openpgp_crt_deinit.restype = None
 
684
    
 
685
    openpgp_crt_get_fingerprint = (
 
686
        _library.gnutls_openpgp_crt_get_fingerprint)
 
687
    openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
 
688
                                            ctypes.c_void_p,
 
689
                                            ctypes.POINTER(
 
690
                                                ctypes.c_size_t)]
 
691
    openpgp_crt_get_fingerprint.restype = _error_code
 
692
    
831
693
    # Remove non-public functions
832
694
    del _error_code, _retry_on_error
833
 
 
 
695
# Create the global "gnutls" object, simulating a module
 
696
gnutls = GnuTLS()
834
697
 
835
698
def call_pipe(connection,       # : multiprocessing.Connection
836
699
              func, *args, **kwargs):
837
700
    """This function is meant to be called by multiprocessing.Process
838
 
 
 
701
    
839
702
    This function runs func(*args, **kwargs), and writes the resulting
840
703
    return value on the provided multiprocessing.Connection.
841
704
    """
842
705
    connection.send(func(*args, **kwargs))
843
706
    connection.close()
844
707
 
845
 
 
846
 
class Client:
 
708
class Client(object):
847
709
    """A representation of a client host served by this server.
848
 
 
 
710
    
849
711
    Attributes:
850
712
    approved:   bool(); 'None' if not yet approved/disapproved
851
713
    approval_delay: datetime.timedelta(); Time to wait for approval
852
714
    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
 
715
    checker:    subprocess.Popen(); a running checker process used
 
716
                                    to see if the client lives.
 
717
                                    'None' if no process is running.
 
718
    checker_callback_tag: a gobject event source tag, or None
857
719
    checker_command: string; External command which is run to check
858
720
                     if client lives.  %() expansions are done at
859
721
                     runtime with vars(self) as dict, so that for
860
722
                     instance %(name)s can be used in the command.
861
 
    checker_initiator_tag: a GLib event source tag, or None
 
723
    checker_initiator_tag: a gobject event source tag, or None
862
724
    created:    datetime.datetime(); (UTC) object creation
863
725
    client_structure: Object describing what attributes a client has
864
726
                      and is used for storing the client at exit
865
727
    current_checker_command: string; current running checker_command
866
 
    disable_initiator_tag: a GLib event source tag, or None
 
728
    disable_initiator_tag: a gobject event source tag, or None
867
729
    enabled:    bool()
868
730
    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
 
731
                 uniquely identify the client
872
732
    host:       string; available for use by the checker command
873
733
    interval:   datetime.timedelta(); How often to start a new checker
874
734
    last_approval_request: datetime.datetime(); (UTC) or None
890
750
                disabled, or None
891
751
    server_settings: The server_settings dict from main()
892
752
    """
893
 
 
 
753
    
894
754
    runtime_expansions = ("approval_delay", "approval_duration",
895
 
                          "created", "enabled", "expires", "key_id",
 
755
                          "created", "enabled", "expires",
896
756
                          "fingerprint", "host", "interval",
897
757
                          "last_approval_request", "last_checked_ok",
898
758
                          "last_enabled", "name", "timeout")
907
767
        "approved_by_default": "True",
908
768
        "enabled": "True",
909
769
    }
910
 
 
 
770
    
911
771
    @staticmethod
912
772
    def config_parser(config):
913
773
        """Construct a new dict of client settings of this form:
920
780
        for client_name in config.sections():
921
781
            section = dict(config.items(client_name))
922
782
            client = settings[client_name] = {}
923
 
 
 
783
            
924
784
            client["host"] = section["host"]
925
785
            # Reformat values from string types to Python types
926
786
            client["approved_by_default"] = config.getboolean(
927
787
                client_name, "approved_by_default")
928
788
            client["enabled"] = config.getboolean(client_name,
929
789
                                                  "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(" ", ""))
 
790
            
 
791
            # Uppercase and remove spaces from fingerprint for later
 
792
            # comparison purposes with return value from the
 
793
            # fingerprint() function
936
794
            client["fingerprint"] = (section["fingerprint"].upper()
937
795
                                     .replace(" ", ""))
938
796
            if "secret" in section:
939
 
                client["secret"] = codecs.decode(section["secret"]
940
 
                                                 .encode("utf-8"),
941
 
                                                 "base64")
 
797
                client["secret"] = section["secret"].decode("base64")
942
798
            elif "secfile" in section:
943
799
                with open(os.path.expanduser(os.path.expandvars
944
800
                                             (section["secfile"])),
959
815
            client["last_approval_request"] = None
960
816
            client["last_checked_ok"] = None
961
817
            client["last_checker_status"] = -2
962
 
 
 
818
        
963
819
        return settings
964
 
 
965
 
    def __init__(self, settings, name=None, server_settings=None):
 
820
    
 
821
    def __init__(self, settings, name = None, server_settings=None):
966
822
        self.name = name
967
823
        if server_settings is None:
968
824
            server_settings = {}
970
826
        # adding all client settings
971
827
        for setting, value in settings.items():
972
828
            setattr(self, setting, value)
973
 
 
 
829
        
974
830
        if self.enabled:
975
831
            if not hasattr(self, "last_enabled"):
976
832
                self.last_enabled = datetime.datetime.utcnow()
980
836
        else:
981
837
            self.last_enabled = None
982
838
            self.expires = None
983
 
 
 
839
        
984
840
        logger.debug("Creating client %r", self.name)
985
 
        logger.debug("  Key ID: %s", self.key_id)
986
841
        logger.debug("  Fingerprint: %s", self.fingerprint)
987
842
        self.created = settings.get("created",
988
843
                                    datetime.datetime.utcnow())
989
 
 
 
844
        
990
845
        # attributes specific for this server instance
991
846
        self.checker = None
992
847
        self.checker_initiator_tag = None
998
853
        self.changedstate = multiprocessing_manager.Condition(
999
854
            multiprocessing_manager.Lock())
1000
855
        self.client_structure = [attr
1001
 
                                 for attr in self.__dict__.keys()
 
856
                                 for attr in self.__dict__.iterkeys()
1002
857
                                 if not attr.startswith("_")]
1003
858
        self.client_structure.append("client_structure")
1004
 
 
 
859
        
1005
860
        for name, t in inspect.getmembers(
1006
861
                type(self), lambda obj: isinstance(obj, property)):
1007
862
            if not name.startswith("_"):
1008
863
                self.client_structure.append(name)
1009
 
 
 
864
    
1010
865
    # Send notice to process children that client state has changed
1011
866
    def send_changedstate(self):
1012
867
        with self.changedstate:
1013
868
            self.changedstate.notify_all()
1014
 
 
 
869
    
1015
870
    def enable(self):
1016
871
        """Start this client's checker and timeout hooks"""
1017
872
        if getattr(self, "enabled", False):
1022
877
        self.last_enabled = datetime.datetime.utcnow()
1023
878
        self.init_checker()
1024
879
        self.send_changedstate()
1025
 
 
 
880
    
1026
881
    def disable(self, quiet=True):
1027
882
        """Disable this client."""
1028
883
        if not getattr(self, "enabled", False):
1030
885
        if not quiet:
1031
886
            logger.info("Disabling client %s", self.name)
1032
887
        if getattr(self, "disable_initiator_tag", None) is not None:
1033
 
            GLib.source_remove(self.disable_initiator_tag)
 
888
            gobject.source_remove(self.disable_initiator_tag)
1034
889
            self.disable_initiator_tag = None
1035
890
        self.expires = None
1036
891
        if getattr(self, "checker_initiator_tag", None) is not None:
1037
 
            GLib.source_remove(self.checker_initiator_tag)
 
892
            gobject.source_remove(self.checker_initiator_tag)
1038
893
            self.checker_initiator_tag = None
1039
894
        self.stop_checker()
1040
895
        self.enabled = False
1041
896
        if not quiet:
1042
897
            self.send_changedstate()
1043
 
        # Do not run this again if called by a GLib.timeout_add
 
898
        # Do not run this again if called by a gobject.timeout_add
1044
899
        return False
1045
 
 
 
900
    
1046
901
    def __del__(self):
1047
902
        self.disable()
1048
 
 
 
903
    
1049
904
    def init_checker(self):
1050
905
        # Schedule a new checker to be started an 'interval' from now,
1051
906
        # and every interval from then on.
1052
907
        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)),
 
908
            gobject.source_remove(self.checker_initiator_tag)
 
909
        self.checker_initiator_tag = gobject.timeout_add(
 
910
            int(self.interval.total_seconds() * 1000),
1057
911
            self.start_checker)
1058
912
        # Schedule a disable() when 'timeout' has passed
1059
913
        if self.disable_initiator_tag is not None:
1060
 
            GLib.source_remove(self.disable_initiator_tag)
1061
 
        self.disable_initiator_tag = GLib.timeout_add(
 
914
            gobject.source_remove(self.disable_initiator_tag)
 
915
        self.disable_initiator_tag = gobject.timeout_add(
1062
916
            int(self.timeout.total_seconds() * 1000), self.disable)
1063
917
        # Also start a new checker *right now*.
1064
918
        self.start_checker()
1065
 
 
 
919
    
1066
920
    def checker_callback(self, source, condition, connection,
1067
921
                         command):
1068
922
        """The checker has completed, so take appropriate actions."""
 
923
        self.checker_callback_tag = None
 
924
        self.checker = None
1069
925
        # Read return code from connection (see call_pipe)
1070
926
        returncode = connection.recv()
1071
927
        connection.close()
1072
 
        if self.checker is not None:
1073
 
            self.checker.join()
1074
 
        self.checker_callback_tag = None
1075
 
        self.checker = None
1076
 
 
 
928
        
1077
929
        if returncode >= 0:
1078
930
            self.last_checker_status = returncode
1079
931
            self.last_checker_signal = None
1089
941
            logger.warning("Checker for %(name)s crashed?",
1090
942
                           vars(self))
1091
943
        return False
1092
 
 
 
944
    
1093
945
    def checked_ok(self):
1094
946
        """Assert that the client has been seen, alive and well."""
1095
947
        self.last_checked_ok = datetime.datetime.utcnow()
1096
948
        self.last_checker_status = 0
1097
949
        self.last_checker_signal = None
1098
950
        self.bump_timeout()
1099
 
 
 
951
    
1100
952
    def bump_timeout(self, timeout=None):
1101
953
        """Bump up the timeout for this client."""
1102
954
        if timeout is None:
1103
955
            timeout = self.timeout
1104
956
        if self.disable_initiator_tag is not None:
1105
 
            GLib.source_remove(self.disable_initiator_tag)
 
957
            gobject.source_remove(self.disable_initiator_tag)
1106
958
            self.disable_initiator_tag = None
1107
959
        if getattr(self, "enabled", False):
1108
 
            self.disable_initiator_tag = GLib.timeout_add(
 
960
            self.disable_initiator_tag = gobject.timeout_add(
1109
961
                int(timeout.total_seconds() * 1000), self.disable)
1110
962
            self.expires = datetime.datetime.utcnow() + timeout
1111
 
 
 
963
    
1112
964
    def need_approval(self):
1113
965
        self.last_approval_request = datetime.datetime.utcnow()
1114
 
 
 
966
    
1115
967
    def start_checker(self):
1116
968
        """Start a new checker subprocess if one is not running.
1117
 
 
 
969
        
1118
970
        If a checker already exists, leave it running and do
1119
971
        nothing."""
1120
972
        # The reason for not killing a running checker is that if we
1125
977
        # checkers alone, the checker would have to take more time
1126
978
        # than 'timeout' for the client to be disabled, which is as it
1127
979
        # should be.
1128
 
 
 
980
        
1129
981
        if self.checker is not None and not self.checker.is_alive():
1130
982
            logger.warning("Checker was not alive; joining")
1131
983
            self.checker.join()
1134
986
        if self.checker is None:
1135
987
            # Escape attributes for the shell
1136
988
            escaped_attrs = {
1137
 
                attr: shlex.quote(str(getattr(self, attr)))
1138
 
                for attr in self.runtime_expansions}
 
989
                attr: re.escape(str(getattr(self, attr)))
 
990
                for attr in self.runtime_expansions }
1139
991
            try:
1140
992
                command = self.checker_command % escaped_attrs
1141
993
            except TypeError as error:
1153
1005
            # The exception is when not debugging but nevertheless
1154
1006
            # running in the foreground; use the previously
1155
1007
            # created wnull.
1156
 
            popen_args = {"close_fds": True,
1157
 
                          "shell": True,
1158
 
                          "cwd": "/"}
 
1008
            popen_args = { "close_fds": True,
 
1009
                           "shell": True,
 
1010
                           "cwd": "/" }
1159
1011
            if (not self.server_settings["debug"]
1160
1012
                and self.server_settings["foreground"]):
1161
1013
                popen_args.update({"stdout": wnull,
1162
 
                                   "stderr": wnull})
1163
 
            pipe = multiprocessing.Pipe(duplex=False)
 
1014
                                   "stderr": wnull })
 
1015
            pipe = multiprocessing.Pipe(duplex = False)
1164
1016
            self.checker = multiprocessing.Process(
1165
 
                target=call_pipe,
1166
 
                args=(pipe[1], subprocess.call, command),
1167
 
                kwargs=popen_args)
 
1017
                target = call_pipe,
 
1018
                args = (pipe[1], subprocess.call, command),
 
1019
                kwargs = popen_args)
1168
1020
            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,
 
1021
            self.checker_callback_tag = gobject.io_add_watch(
 
1022
                pipe[0].fileno(), gobject.IO_IN,
1172
1023
                self.checker_callback, pipe[0], command)
1173
 
        # Re-run this periodically if run by GLib.timeout_add
 
1024
        # Re-run this periodically if run by gobject.timeout_add
1174
1025
        return True
1175
 
 
 
1026
    
1176
1027
    def stop_checker(self):
1177
1028
        """Force the checker process, if any, to stop."""
1178
1029
        if self.checker_callback_tag:
1179
 
            GLib.source_remove(self.checker_callback_tag)
 
1030
            gobject.source_remove(self.checker_callback_tag)
1180
1031
            self.checker_callback_tag = None
1181
1032
        if getattr(self, "checker", None) is None:
1182
1033
            return
1191
1042
                          byte_arrays=False):
1192
1043
    """Decorators for marking methods of a DBusObjectWithProperties to
1193
1044
    become properties on the D-Bus.
1194
 
 
 
1045
    
1195
1046
    The decorated method will be called with no arguments by "Get"
1196
1047
    and with one argument by "Set".
1197
 
 
 
1048
    
1198
1049
    The parameters, where they are supported, are the same as
1199
1050
    dbus.service.method, except there is only "signature", since the
1200
1051
    type from Get() and the type sent to Set() is the same.
1204
1055
    if byte_arrays and signature != "ay":
1205
1056
        raise ValueError("Byte arrays not supported for non-'ay'"
1206
1057
                         " signature {!r}".format(signature))
1207
 
 
 
1058
    
1208
1059
    def decorator(func):
1209
1060
        func._dbus_is_property = True
1210
1061
        func._dbus_interface = dbus_interface
1213
1064
        func._dbus_name = func.__name__
1214
1065
        if func._dbus_name.endswith("_dbus_property"):
1215
1066
            func._dbus_name = func._dbus_name[:-14]
1216
 
        func._dbus_get_args_options = {'byte_arrays': byte_arrays}
 
1067
        func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1217
1068
        return func
1218
 
 
 
1069
    
1219
1070
    return decorator
1220
1071
 
1221
1072
 
1222
1073
def dbus_interface_annotations(dbus_interface):
1223
1074
    """Decorator for marking functions returning interface annotations
1224
 
 
 
1075
    
1225
1076
    Usage:
1226
 
 
 
1077
    
1227
1078
    @dbus_interface_annotations("org.example.Interface")
1228
1079
    def _foo(self):  # Function name does not matter
1229
1080
        return {"org.freedesktop.DBus.Deprecated": "true",
1230
1081
                "org.freedesktop.DBus.Property.EmitsChangedSignal":
1231
1082
                    "false"}
1232
1083
    """
1233
 
 
 
1084
    
1234
1085
    def decorator(func):
1235
1086
        func._dbus_is_interface = True
1236
1087
        func._dbus_interface = dbus_interface
1237
1088
        func._dbus_name = dbus_interface
1238
1089
        return func
1239
 
 
 
1090
    
1240
1091
    return decorator
1241
1092
 
1242
1093
 
1243
1094
def dbus_annotations(annotations):
1244
1095
    """Decorator to annotate D-Bus methods, signals or properties
1245
1096
    Usage:
1246
 
 
 
1097
    
1247
1098
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1248
1099
                       "org.freedesktop.DBus.Property."
1249
1100
                       "EmitsChangedSignal": "false"})
1251
1102
                           access="r")
1252
1103
    def Property_dbus_property(self):
1253
1104
        return dbus.Boolean(False)
1254
 
 
 
1105
    
1255
1106
    See also the DBusObjectWithAnnotations class.
1256
1107
    """
1257
 
 
 
1108
    
1258
1109
    def decorator(func):
1259
1110
        func._dbus_annotations = annotations
1260
1111
        return func
1261
 
 
 
1112
    
1262
1113
    return decorator
1263
1114
 
1264
1115
 
1282
1133
 
1283
1134
class DBusObjectWithAnnotations(dbus.service.Object):
1284
1135
    """A D-Bus object with annotations.
1285
 
 
 
1136
    
1286
1137
    Classes inheriting from this can use the dbus_annotations
1287
1138
    decorator to add annotations to methods or signals.
1288
1139
    """
1289
 
 
 
1140
    
1290
1141
    @staticmethod
1291
1142
    def _is_dbus_thing(thing):
1292
1143
        """Returns a function testing if an attribute is a D-Bus thing
1293
 
 
 
1144
        
1294
1145
        If called like _is_dbus_thing("method") it returns a function
1295
1146
        suitable for use as predicate to inspect.getmembers().
1296
1147
        """
1297
1148
        return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1298
1149
                                   False)
1299
 
 
 
1150
    
1300
1151
    def _get_all_dbus_things(self, thing):
1301
1152
        """Returns a generator of (name, attribute) pairs
1302
1153
        """
1305
1156
                for cls in self.__class__.__mro__
1306
1157
                for name, athing in
1307
1158
                inspect.getmembers(cls, self._is_dbus_thing(thing)))
1308
 
 
 
1159
    
1309
1160
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1310
 
                         out_signature="s",
1311
 
                         path_keyword='object_path',
1312
 
                         connection_keyword='connection')
 
1161
                         out_signature = "s",
 
1162
                         path_keyword = 'object_path',
 
1163
                         connection_keyword = 'connection')
1313
1164
    def Introspect(self, object_path, connection):
1314
1165
        """Overloading of standard D-Bus method.
1315
 
 
 
1166
        
1316
1167
        Inserts annotation tags on methods and signals.
1317
1168
        """
1318
1169
        xmlstring = dbus.service.Object.Introspect(self, object_path,
1319
1170
                                                   connection)
1320
1171
        try:
1321
1172
            document = xml.dom.minidom.parseString(xmlstring)
1322
 
 
 
1173
            
1323
1174
            for if_tag in document.getElementsByTagName("interface"):
1324
1175
                # Add annotation tags
1325
1176
                for typ in ("method", "signal"):
1352
1203
                    if_tag.appendChild(ann_tag)
1353
1204
                # Fix argument name for the Introspect method itself
1354
1205
                if (if_tag.getAttribute("name")
1355
 
                    == dbus.INTROSPECTABLE_IFACE):
 
1206
                                == dbus.INTROSPECTABLE_IFACE):
1356
1207
                    for cn in if_tag.getElementsByTagName("method"):
1357
1208
                        if cn.getAttribute("name") == "Introspect":
1358
1209
                            for arg in cn.getElementsByTagName("arg"):
1371
1222
 
1372
1223
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1373
1224
    """A D-Bus object with properties.
1374
 
 
 
1225
    
1375
1226
    Classes inheriting from this can use the dbus_service_property
1376
1227
    decorator to expose methods as D-Bus properties.  It exposes the
1377
1228
    standard Get(), Set(), and GetAll() methods on the D-Bus.
1378
1229
    """
1379
 
 
 
1230
    
1380
1231
    def _get_dbus_property(self, interface_name, property_name):
1381
1232
        """Returns a bound method if one exists which is a D-Bus
1382
1233
        property with the specified name and interface.
1387
1238
                if (value._dbus_name == property_name
1388
1239
                    and value._dbus_interface == interface_name):
1389
1240
                    return value.__get__(self)
1390
 
 
 
1241
        
1391
1242
        # No such property
1392
1243
        raise DBusPropertyNotFound("{}:{}.{}".format(
1393
1244
            self.dbus_object_path, interface_name, property_name))
1394
 
 
 
1245
    
1395
1246
    @classmethod
1396
1247
    def _get_all_interface_names(cls):
1397
1248
        """Get a sequence of all interfaces supported by an object"""
1400
1251
                                     for x in (inspect.getmro(cls))
1401
1252
                                     for attr in dir(x))
1402
1253
                if name is not None)
1403
 
 
 
1254
    
1404
1255
    @dbus.service.method(dbus.PROPERTIES_IFACE,
1405
1256
                         in_signature="ss",
1406
1257
                         out_signature="v")
1414
1265
        if not hasattr(value, "variant_level"):
1415
1266
            return value
1416
1267
        return type(value)(value, variant_level=value.variant_level+1)
1417
 
 
 
1268
    
1418
1269
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1419
1270
    def Set(self, interface_name, property_name, value):
1420
1271
        """Standard D-Bus property Set() method, see D-Bus standard.
1429
1280
                raise ValueError("Byte arrays not supported for non-"
1430
1281
                                 "'ay' signature {!r}"
1431
1282
                                 .format(prop._dbus_signature))
1432
 
            value = dbus.ByteArray(bytes(value))
 
1283
            value = dbus.ByteArray(b''.join(chr(byte)
 
1284
                                            for byte in value))
1433
1285
        prop(value)
1434
 
 
 
1286
    
1435
1287
    @dbus.service.method(dbus.PROPERTIES_IFACE,
1436
1288
                         in_signature="s",
1437
1289
                         out_signature="a{sv}")
1438
1290
    def GetAll(self, interface_name):
1439
1291
        """Standard D-Bus property GetAll() method, see D-Bus
1440
1292
        standard.
1441
 
 
 
1293
        
1442
1294
        Note: Will not include properties with access="write".
1443
1295
        """
1444
1296
        properties = {}
1455
1307
                properties[name] = value
1456
1308
                continue
1457
1309
            properties[name] = type(value)(
1458
 
                value, variant_level=value.variant_level + 1)
 
1310
                value, variant_level = value.variant_level + 1)
1459
1311
        return dbus.Dictionary(properties, signature="sv")
1460
 
 
 
1312
    
1461
1313
    @dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1462
1314
    def PropertiesChanged(self, interface_name, changed_properties,
1463
1315
                          invalidated_properties):
1465
1317
        standard.
1466
1318
        """
1467
1319
        pass
1468
 
 
 
1320
    
1469
1321
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1470
1322
                         out_signature="s",
1471
1323
                         path_keyword='object_path',
1472
1324
                         connection_keyword='connection')
1473
1325
    def Introspect(self, object_path, connection):
1474
1326
        """Overloading of standard D-Bus method.
1475
 
 
 
1327
        
1476
1328
        Inserts property tags and interface annotation tags.
1477
1329
        """
1478
1330
        xmlstring = DBusObjectWithAnnotations.Introspect(self,
1480
1332
                                                         connection)
1481
1333
        try:
1482
1334
            document = xml.dom.minidom.parseString(xmlstring)
1483
 
 
 
1335
            
1484
1336
            def make_tag(document, name, prop):
1485
1337
                e = document.createElement("property")
1486
1338
                e.setAttribute("name", name)
1487
1339
                e.setAttribute("type", prop._dbus_signature)
1488
1340
                e.setAttribute("access", prop._dbus_access)
1489
1341
                return e
1490
 
 
 
1342
            
1491
1343
            for if_tag in document.getElementsByTagName("interface"):
1492
1344
                # Add property tags
1493
1345
                for tag in (make_tag(document, name, prop)
1535
1387
                         exc_info=error)
1536
1388
        return xmlstring
1537
1389
 
1538
 
 
1539
1390
try:
1540
1391
    dbus.OBJECT_MANAGER_IFACE
1541
1392
except AttributeError:
1542
1393
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1543
1394
 
1544
 
 
1545
1395
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1546
1396
    """A D-Bus object with an ObjectManager.
1547
 
 
 
1397
    
1548
1398
    Classes inheriting from this exposes the standard
1549
1399
    GetManagedObjects call and the InterfacesAdded and
1550
1400
    InterfacesRemoved signals on the standard
1551
1401
    "org.freedesktop.DBus.ObjectManager" interface.
1552
 
 
 
1402
    
1553
1403
    Note: No signals are sent automatically; they must be sent
1554
1404
    manually.
1555
1405
    """
1556
1406
    @dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1557
 
                         out_signature="a{oa{sa{sv}}}")
 
1407
                         out_signature = "a{oa{sa{sv}}}")
1558
1408
    def GetManagedObjects(self):
1559
1409
        """This function must be overridden"""
1560
1410
        raise NotImplementedError()
1561
 
 
 
1411
    
1562
1412
    @dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1563
 
                         signature="oa{sa{sv}}")
 
1413
                         signature = "oa{sa{sv}}")
1564
1414
    def InterfacesAdded(self, object_path, interfaces_and_properties):
1565
1415
        pass
1566
 
 
1567
 
    @dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
 
1416
    
 
1417
    @dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1568
1418
    def InterfacesRemoved(self, object_path, interfaces):
1569
1419
        pass
1570
 
 
 
1420
    
1571
1421
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1572
 
                         out_signature="s",
1573
 
                         path_keyword='object_path',
1574
 
                         connection_keyword='connection')
 
1422
                         out_signature = "s",
 
1423
                         path_keyword = 'object_path',
 
1424
                         connection_keyword = 'connection')
1575
1425
    def Introspect(self, object_path, connection):
1576
1426
        """Overloading of standard D-Bus method.
1577
 
 
 
1427
        
1578
1428
        Override return argument name of GetManagedObjects to be
1579
1429
        "objpath_interfaces_and_properties"
1580
1430
        """
1583
1433
                                                         connection)
1584
1434
        try:
1585
1435
            document = xml.dom.minidom.parseString(xmlstring)
1586
 
 
 
1436
            
1587
1437
            for if_tag in document.getElementsByTagName("interface"):
1588
1438
                # Fix argument name for the GetManagedObjects method
1589
1439
                if (if_tag.getAttribute("name")
1590
 
                    == dbus.OBJECT_MANAGER_IFACE):
 
1440
                                == dbus.OBJECT_MANAGER_IFACE):
1591
1441
                    for cn in if_tag.getElementsByTagName("method"):
1592
1442
                        if (cn.getAttribute("name")
1593
1443
                            == "GetManagedObjects"):
1603
1453
        except (AttributeError, xml.dom.DOMException,
1604
1454
                xml.parsers.expat.ExpatError) as error:
1605
1455
            logger.error("Failed to override Introspection method",
1606
 
                         exc_info=error)
 
1456
                         exc_info = error)
1607
1457
        return xmlstring
1608
1458
 
1609
 
 
1610
1459
def datetime_to_dbus(dt, variant_level=0):
1611
1460
    """Convert a UTC datetime.datetime() to a D-Bus type."""
1612
1461
    if dt is None:
1613
 
        return dbus.String("", variant_level=variant_level)
 
1462
        return dbus.String("", variant_level = variant_level)
1614
1463
    return dbus.String(dt.isoformat(), variant_level=variant_level)
1615
1464
 
1616
1465
 
1619
1468
    dbus.service.Object, it will add alternate D-Bus attributes with
1620
1469
    interface names according to the "alt_interface_names" mapping.
1621
1470
    Usage:
1622
 
 
 
1471
    
1623
1472
    @alternate_dbus_interfaces({"org.example.Interface":
1624
1473
                                    "net.example.AlternateInterface"})
1625
1474
    class SampleDBusObject(dbus.service.Object):
1626
1475
        @dbus.service.method("org.example.Interface")
1627
1476
        def SampleDBusMethod():
1628
1477
            pass
1629
 
 
 
1478
    
1630
1479
    The above "SampleDBusMethod" on "SampleDBusObject" will be
1631
1480
    reachable via two interfaces: "org.example.Interface" and
1632
1481
    "net.example.AlternateInterface", the latter of which will have
1633
1482
    its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1634
1483
    "true", unless "deprecate" is passed with a False value.
1635
 
 
 
1484
    
1636
1485
    This works for methods and signals, and also for D-Bus properties
1637
1486
    (from DBusObjectWithProperties) and interfaces (from the
1638
1487
    dbus_interface_annotations decorator).
1639
1488
    """
1640
 
 
 
1489
    
1641
1490
    def wrapper(cls):
1642
1491
        for orig_interface_name, alt_interface_name in (
1643
1492
                alt_interface_names.items()):
1658
1507
                interface_names.add(alt_interface)
1659
1508
                # Is this a D-Bus signal?
1660
1509
                if getattr(attribute, "_dbus_is_signal", False):
1661
 
                    # Extract the original non-method undecorated
1662
 
                    # function by black magic
1663
1510
                    if sys.version_info.major == 2:
 
1511
                        # Extract the original non-method undecorated
 
1512
                        # function by black magic
1664
1513
                        nonmethod_func = (dict(
1665
1514
                            zip(attribute.func_code.co_freevars,
1666
1515
                                attribute.__closure__))
1667
1516
                                          ["func"].cell_contents)
1668
1517
                    else:
1669
 
                        nonmethod_func = (dict(
1670
 
                            zip(attribute.__code__.co_freevars,
1671
 
                                attribute.__closure__))
1672
 
                                          ["func"].cell_contents)
 
1518
                        nonmethod_func = attribute
1673
1519
                    # Create a new, but exactly alike, function
1674
1520
                    # object, and decorate it to be a new D-Bus signal
1675
1521
                    # with the alternate D-Bus interface name
1676
 
                    new_function = copy_function(nonmethod_func)
 
1522
                    if sys.version_info.major == 2:
 
1523
                        new_function = types.FunctionType(
 
1524
                            nonmethod_func.func_code,
 
1525
                            nonmethod_func.func_globals,
 
1526
                            nonmethod_func.func_name,
 
1527
                            nonmethod_func.func_defaults,
 
1528
                            nonmethod_func.func_closure)
 
1529
                    else:
 
1530
                        new_function = types.FunctionType(
 
1531
                            nonmethod_func.__code__,
 
1532
                            nonmethod_func.__globals__,
 
1533
                            nonmethod_func.__name__,
 
1534
                            nonmethod_func.__defaults__,
 
1535
                            nonmethod_func.__closure__)
1677
1536
                    new_function = (dbus.service.signal(
1678
1537
                        alt_interface,
1679
1538
                        attribute._dbus_signature)(new_function))
1683
1542
                            attribute._dbus_annotations)
1684
1543
                    except AttributeError:
1685
1544
                        pass
1686
 
 
1687
1545
                    # Define a creator of a function to call both the
1688
1546
                    # original and alternate functions, so both the
1689
1547
                    # original and alternate signals gets sent when
1692
1550
                        """This function is a scope container to pass
1693
1551
                        func1 and func2 to the "call_both" function
1694
1552
                        outside of its arguments"""
1695
 
 
 
1553
                        
1696
1554
                        @functools.wraps(func2)
1697
1555
                        def call_both(*args, **kwargs):
1698
1556
                            """This function will emit two D-Bus
1699
1557
                            signals by calling func1 and func2"""
1700
1558
                            func1(*args, **kwargs)
1701
1559
                            func2(*args, **kwargs)
1702
 
                        # Make wrapper function look like a D-Bus
1703
 
                        # signal
 
1560
                        # Make wrapper function look like a D-Bus signal
1704
1561
                        for name, attr in inspect.getmembers(func2):
1705
1562
                            if name.startswith("_dbus_"):
1706
1563
                                setattr(call_both, name, attr)
1707
 
 
 
1564
                        
1708
1565
                        return call_both
1709
1566
                    # Create the "call_both" function and add it to
1710
1567
                    # the class
1720
1577
                            alt_interface,
1721
1578
                            attribute._dbus_in_signature,
1722
1579
                            attribute._dbus_out_signature)
1723
 
                        (copy_function(attribute)))
 
1580
                        (types.FunctionType(attribute.func_code,
 
1581
                                            attribute.func_globals,
 
1582
                                            attribute.func_name,
 
1583
                                            attribute.func_defaults,
 
1584
                                            attribute.func_closure)))
1724
1585
                    # Copy annotations, if any
1725
1586
                    try:
1726
1587
                        attr[attrname]._dbus_annotations = dict(
1738
1599
                        attribute._dbus_access,
1739
1600
                        attribute._dbus_get_args_options
1740
1601
                        ["byte_arrays"])
1741
 
                                      (copy_function(attribute)))
 
1602
                                      (types.FunctionType(
 
1603
                                          attribute.func_code,
 
1604
                                          attribute.func_globals,
 
1605
                                          attribute.func_name,
 
1606
                                          attribute.func_defaults,
 
1607
                                          attribute.func_closure)))
1742
1608
                    # Copy annotations, if any
1743
1609
                    try:
1744
1610
                        attr[attrname]._dbus_annotations = dict(
1753
1619
                    # to the class.
1754
1620
                    attr[attrname] = (
1755
1621
                        dbus_interface_annotations(alt_interface)
1756
 
                        (copy_function(attribute)))
 
1622
                        (types.FunctionType(attribute.func_code,
 
1623
                                            attribute.func_globals,
 
1624
                                            attribute.func_name,
 
1625
                                            attribute.func_defaults,
 
1626
                                            attribute.func_closure)))
1757
1627
            if deprecate:
1758
1628
                # Deprecate all alternate interfaces
1759
 
                iname = "_AlternateDBusNames_interface_annotation{}"
 
1629
                iname="_AlternateDBusNames_interface_annotation{}"
1760
1630
                for interface_name in interface_names:
1761
 
 
 
1631
                    
1762
1632
                    @dbus_interface_annotations(interface_name)
1763
1633
                    def func(self):
1764
 
                        return {"org.freedesktop.DBus.Deprecated":
1765
 
                                "true"}
 
1634
                        return { "org.freedesktop.DBus.Deprecated":
 
1635
                                 "true" }
1766
1636
                    # Find an unused name
1767
1637
                    for aname in (iname.format(i)
1768
1638
                                  for i in itertools.count()):
1772
1642
            if interface_names:
1773
1643
                # Replace the class with a new subclass of it with
1774
1644
                # 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)
 
1645
                cls = type(b"{}Alternate".format(cls.__name__),
 
1646
                           (cls, ), attr)
1781
1647
        return cls
1782
 
 
 
1648
    
1783
1649
    return wrapper
1784
1650
 
1785
1651
 
1787
1653
                            "se.bsnet.fukt.Mandos"})
1788
1654
class ClientDBus(Client, DBusObjectWithProperties):
1789
1655
    """A Client class using D-Bus
1790
 
 
 
1656
    
1791
1657
    Attributes:
1792
1658
    dbus_object_path: dbus.ObjectPath
1793
1659
    bus: dbus.SystemBus()
1794
1660
    """
1795
 
 
 
1661
    
1796
1662
    runtime_expansions = (Client.runtime_expansions
1797
1663
                          + ("dbus_object_path", ))
1798
 
 
 
1664
    
1799
1665
    _interface = "se.recompile.Mandos.Client"
1800
 
 
 
1666
    
1801
1667
    # dbus.service.Object doesn't use super(), so we can't either.
1802
 
 
1803
 
    def __init__(self, bus=None, *args, **kwargs):
 
1668
    
 
1669
    def __init__(self, bus = None, *args, **kwargs):
1804
1670
        self.bus = bus
1805
1671
        Client.__init__(self, *args, **kwargs)
1806
1672
        # Only now, when this client is initialized, can it show up on
1812
1678
            "/clients/" + client_object_name)
1813
1679
        DBusObjectWithProperties.__init__(self, self.bus,
1814
1680
                                          self.dbus_object_path)
1815
 
 
 
1681
    
1816
1682
    def notifychangeproperty(transform_func, dbus_name,
1817
1683
                             type_func=lambda x: x,
1818
1684
                             variant_level=1,
1820
1686
                             _interface=_interface):
1821
1687
        """ Modify a variable so that it's a property which announces
1822
1688
        its changes to DBus.
1823
 
 
 
1689
        
1824
1690
        transform_fun: Function that takes a value and a variant_level
1825
1691
                       and transforms it to a D-Bus type.
1826
1692
        dbus_name: D-Bus name of the variable
1829
1695
        variant_level: D-Bus variant level.  Default: 1
1830
1696
        """
1831
1697
        attrname = "_{}".format(dbus_name)
1832
 
 
 
1698
        
1833
1699
        def setter(self, value):
1834
1700
            if hasattr(self, "dbus_object_path"):
1835
1701
                if (not hasattr(self, attrname) or
1842
1708
                    else:
1843
1709
                        dbus_value = transform_func(
1844
1710
                            type_func(value),
1845
 
                            variant_level=variant_level)
 
1711
                            variant_level = variant_level)
1846
1712
                        self.PropertyChanged(dbus.String(dbus_name),
1847
1713
                                             dbus_value)
1848
1714
                        self.PropertiesChanged(
1849
1715
                            _interface,
1850
 
                            dbus.Dictionary({dbus.String(dbus_name):
1851
 
                                             dbus_value}),
 
1716
                            dbus.Dictionary({ dbus.String(dbus_name):
 
1717
                                              dbus_value }),
1852
1718
                            dbus.Array())
1853
1719
            setattr(self, attrname, value)
1854
 
 
 
1720
        
1855
1721
        return property(lambda self: getattr(self, attrname), setter)
1856
 
 
 
1722
    
1857
1723
    expires = notifychangeproperty(datetime_to_dbus, "Expires")
1858
1724
    approvals_pending = notifychangeproperty(dbus.Boolean,
1859
1725
                                             "ApprovalPending",
1860
 
                                             type_func=bool)
 
1726
                                             type_func = bool)
1861
1727
    enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1862
1728
    last_enabled = notifychangeproperty(datetime_to_dbus,
1863
1729
                                        "LastEnabled")
1864
1730
    checker = notifychangeproperty(
1865
1731
        dbus.Boolean, "CheckerRunning",
1866
 
        type_func=lambda checker: checker is not None)
 
1732
        type_func = lambda checker: checker is not None)
1867
1733
    last_checked_ok = notifychangeproperty(datetime_to_dbus,
1868
1734
                                           "LastCheckedOK")
1869
1735
    last_checker_status = notifychangeproperty(dbus.Int16,
1874
1740
                                               "ApprovedByDefault")
1875
1741
    approval_delay = notifychangeproperty(
1876
1742
        dbus.UInt64, "ApprovalDelay",
1877
 
        type_func=lambda td: td.total_seconds() * 1000)
 
1743
        type_func = lambda td: td.total_seconds() * 1000)
1878
1744
    approval_duration = notifychangeproperty(
1879
1745
        dbus.UInt64, "ApprovalDuration",
1880
 
        type_func=lambda td: td.total_seconds() * 1000)
 
1746
        type_func = lambda td: td.total_seconds() * 1000)
1881
1747
    host = notifychangeproperty(dbus.String, "Host")
1882
1748
    timeout = notifychangeproperty(
1883
1749
        dbus.UInt64, "Timeout",
1884
 
        type_func=lambda td: td.total_seconds() * 1000)
 
1750
        type_func = lambda td: td.total_seconds() * 1000)
1885
1751
    extended_timeout = notifychangeproperty(
1886
1752
        dbus.UInt64, "ExtendedTimeout",
1887
 
        type_func=lambda td: td.total_seconds() * 1000)
 
1753
        type_func = lambda td: td.total_seconds() * 1000)
1888
1754
    interval = notifychangeproperty(
1889
1755
        dbus.UInt64, "Interval",
1890
 
        type_func=lambda td: td.total_seconds() * 1000)
 
1756
        type_func = lambda td: td.total_seconds() * 1000)
1891
1757
    checker_command = notifychangeproperty(dbus.String, "Checker")
1892
1758
    secret = notifychangeproperty(dbus.ByteArray, "Secret",
1893
1759
                                  invalidate_only=True)
1894
 
 
 
1760
    
1895
1761
    del notifychangeproperty
1896
 
 
 
1762
    
1897
1763
    def __del__(self, *args, **kwargs):
1898
1764
        try:
1899
1765
            self.remove_from_connection()
1902
1768
        if hasattr(DBusObjectWithProperties, "__del__"):
1903
1769
            DBusObjectWithProperties.__del__(self, *args, **kwargs)
1904
1770
        Client.__del__(self, *args, **kwargs)
1905
 
 
 
1771
    
1906
1772
    def checker_callback(self, source, condition,
1907
1773
                         connection, command, *args, **kwargs):
1908
1774
        ret = Client.checker_callback(self, source, condition,
1924
1790
                                      | self.last_checker_signal),
1925
1791
                                  dbus.String(command))
1926
1792
        return ret
1927
 
 
 
1793
    
1928
1794
    def start_checker(self, *args, **kwargs):
1929
1795
        old_checker_pid = getattr(self.checker, "pid", None)
1930
1796
        r = Client.start_checker(self, *args, **kwargs)
1934
1800
            # Emit D-Bus signal
1935
1801
            self.CheckerStarted(self.current_checker_command)
1936
1802
        return r
1937
 
 
 
1803
    
1938
1804
    def _reset_approved(self):
1939
1805
        self.approved = None
1940
1806
        return False
1941
 
 
 
1807
    
1942
1808
    def approve(self, value=True):
1943
1809
        self.approved = value
1944
 
        GLib.timeout_add(int(self.approval_duration.total_seconds()
1945
 
                             * 1000), self._reset_approved)
 
1810
        gobject.timeout_add(int(self.approval_duration.total_seconds()
 
1811
                                * 1000), self._reset_approved)
1946
1812
        self.send_changedstate()
1947
 
 
1948
 
    #  D-Bus methods, signals & properties
1949
 
 
1950
 
    #  Interfaces
1951
 
 
1952
 
    #  Signals
1953
 
 
 
1813
    
 
1814
    ## D-Bus methods, signals & properties
 
1815
    
 
1816
    ## Interfaces
 
1817
    
 
1818
    ## Signals
 
1819
    
1954
1820
    # CheckerCompleted - signal
1955
1821
    @dbus.service.signal(_interface, signature="nxs")
1956
1822
    def CheckerCompleted(self, exitcode, waitstatus, command):
1957
1823
        "D-Bus signal"
1958
1824
        pass
1959
 
 
 
1825
    
1960
1826
    # CheckerStarted - signal
1961
1827
    @dbus.service.signal(_interface, signature="s")
1962
1828
    def CheckerStarted(self, command):
1963
1829
        "D-Bus signal"
1964
1830
        pass
1965
 
 
 
1831
    
1966
1832
    # PropertyChanged - signal
1967
1833
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1968
1834
    @dbus.service.signal(_interface, signature="sv")
1969
1835
    def PropertyChanged(self, property, value):
1970
1836
        "D-Bus signal"
1971
1837
        pass
1972
 
 
 
1838
    
1973
1839
    # GotSecret - signal
1974
1840
    @dbus.service.signal(_interface)
1975
1841
    def GotSecret(self):
1978
1844
        server to mandos-client
1979
1845
        """
1980
1846
        pass
1981
 
 
 
1847
    
1982
1848
    # Rejected - signal
1983
1849
    @dbus.service.signal(_interface, signature="s")
1984
1850
    def Rejected(self, reason):
1985
1851
        "D-Bus signal"
1986
1852
        pass
1987
 
 
 
1853
    
1988
1854
    # NeedApproval - signal
1989
1855
    @dbus.service.signal(_interface, signature="tb")
1990
1856
    def NeedApproval(self, timeout, default):
1991
1857
        "D-Bus signal"
1992
1858
        return self.need_approval()
1993
 
 
1994
 
    #  Methods
1995
 
 
 
1859
    
 
1860
    ## Methods
 
1861
    
1996
1862
    # Approve - method
1997
1863
    @dbus.service.method(_interface, in_signature="b")
1998
1864
    def Approve(self, value):
1999
1865
        self.approve(value)
2000
 
 
 
1866
    
2001
1867
    # CheckedOK - method
2002
1868
    @dbus.service.method(_interface)
2003
1869
    def CheckedOK(self):
2004
1870
        self.checked_ok()
2005
 
 
 
1871
    
2006
1872
    # Enable - method
2007
1873
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2008
1874
    @dbus.service.method(_interface)
2009
1875
    def Enable(self):
2010
1876
        "D-Bus method"
2011
1877
        self.enable()
2012
 
 
 
1878
    
2013
1879
    # StartChecker - method
2014
1880
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2015
1881
    @dbus.service.method(_interface)
2016
1882
    def StartChecker(self):
2017
1883
        "D-Bus method"
2018
1884
        self.start_checker()
2019
 
 
 
1885
    
2020
1886
    # Disable - method
2021
1887
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2022
1888
    @dbus.service.method(_interface)
2023
1889
    def Disable(self):
2024
1890
        "D-Bus method"
2025
1891
        self.disable()
2026
 
 
 
1892
    
2027
1893
    # StopChecker - method
2028
1894
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2029
1895
    @dbus.service.method(_interface)
2030
1896
    def StopChecker(self):
2031
1897
        self.stop_checker()
2032
 
 
2033
 
    #  Properties
2034
 
 
 
1898
    
 
1899
    ## Properties
 
1900
    
2035
1901
    # ApprovalPending - property
2036
1902
    @dbus_service_property(_interface, signature="b", access="read")
2037
1903
    def ApprovalPending_dbus_property(self):
2038
1904
        return dbus.Boolean(bool(self.approvals_pending))
2039
 
 
 
1905
    
2040
1906
    # ApprovedByDefault - property
2041
1907
    @dbus_service_property(_interface,
2042
1908
                           signature="b",
2045
1911
        if value is None:       # get
2046
1912
            return dbus.Boolean(self.approved_by_default)
2047
1913
        self.approved_by_default = bool(value)
2048
 
 
 
1914
    
2049
1915
    # ApprovalDelay - property
2050
1916
    @dbus_service_property(_interface,
2051
1917
                           signature="t",
2055
1921
            return dbus.UInt64(self.approval_delay.total_seconds()
2056
1922
                               * 1000)
2057
1923
        self.approval_delay = datetime.timedelta(0, 0, 0, value)
2058
 
 
 
1924
    
2059
1925
    # ApprovalDuration - property
2060
1926
    @dbus_service_property(_interface,
2061
1927
                           signature="t",
2065
1931
            return dbus.UInt64(self.approval_duration.total_seconds()
2066
1932
                               * 1000)
2067
1933
        self.approval_duration = datetime.timedelta(0, 0, 0, value)
2068
 
 
 
1934
    
2069
1935
    # Name - property
2070
1936
    @dbus_annotations(
2071
1937
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2072
1938
    @dbus_service_property(_interface, signature="s", access="read")
2073
1939
    def Name_dbus_property(self):
2074
1940
        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
 
 
 
1941
    
2083
1942
    # Fingerprint - property
2084
1943
    @dbus_annotations(
2085
1944
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2086
1945
    @dbus_service_property(_interface, signature="s", access="read")
2087
1946
    def Fingerprint_dbus_property(self):
2088
1947
        return dbus.String(self.fingerprint)
2089
 
 
 
1948
    
2090
1949
    # Host - property
2091
1950
    @dbus_service_property(_interface,
2092
1951
                           signature="s",
2095
1954
        if value is None:       # get
2096
1955
            return dbus.String(self.host)
2097
1956
        self.host = str(value)
2098
 
 
 
1957
    
2099
1958
    # Created - property
2100
1959
    @dbus_annotations(
2101
1960
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2102
1961
    @dbus_service_property(_interface, signature="s", access="read")
2103
1962
    def Created_dbus_property(self):
2104
1963
        return datetime_to_dbus(self.created)
2105
 
 
 
1964
    
2106
1965
    # LastEnabled - property
2107
1966
    @dbus_service_property(_interface, signature="s", access="read")
2108
1967
    def LastEnabled_dbus_property(self):
2109
1968
        return datetime_to_dbus(self.last_enabled)
2110
 
 
 
1969
    
2111
1970
    # Enabled - property
2112
1971
    @dbus_service_property(_interface,
2113
1972
                           signature="b",
2119
1978
            self.enable()
2120
1979
        else:
2121
1980
            self.disable()
2122
 
 
 
1981
    
2123
1982
    # LastCheckedOK - property
2124
1983
    @dbus_service_property(_interface,
2125
1984
                           signature="s",
2129
1988
            self.checked_ok()
2130
1989
            return
2131
1990
        return datetime_to_dbus(self.last_checked_ok)
2132
 
 
 
1991
    
2133
1992
    # LastCheckerStatus - property
2134
1993
    @dbus_service_property(_interface, signature="n", access="read")
2135
1994
    def LastCheckerStatus_dbus_property(self):
2136
1995
        return dbus.Int16(self.last_checker_status)
2137
 
 
 
1996
    
2138
1997
    # Expires - property
2139
1998
    @dbus_service_property(_interface, signature="s", access="read")
2140
1999
    def Expires_dbus_property(self):
2141
2000
        return datetime_to_dbus(self.expires)
2142
 
 
 
2001
    
2143
2002
    # LastApprovalRequest - property
2144
2003
    @dbus_service_property(_interface, signature="s", access="read")
2145
2004
    def LastApprovalRequest_dbus_property(self):
2146
2005
        return datetime_to_dbus(self.last_approval_request)
2147
 
 
 
2006
    
2148
2007
    # Timeout - property
2149
2008
    @dbus_service_property(_interface,
2150
2009
                           signature="t",
2165
2024
                if (getattr(self, "disable_initiator_tag", None)
2166
2025
                    is None):
2167
2026
                    return
2168
 
                GLib.source_remove(self.disable_initiator_tag)
2169
 
                self.disable_initiator_tag = GLib.timeout_add(
 
2027
                gobject.source_remove(self.disable_initiator_tag)
 
2028
                self.disable_initiator_tag = gobject.timeout_add(
2170
2029
                    int((self.expires - now).total_seconds() * 1000),
2171
2030
                    self.disable)
2172
 
 
 
2031
    
2173
2032
    # ExtendedTimeout - property
2174
2033
    @dbus_service_property(_interface,
2175
2034
                           signature="t",
2179
2038
            return dbus.UInt64(self.extended_timeout.total_seconds()
2180
2039
                               * 1000)
2181
2040
        self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2182
 
 
 
2041
    
2183
2042
    # Interval - property
2184
2043
    @dbus_service_property(_interface,
2185
2044
                           signature="t",
2192
2051
            return
2193
2052
        if self.enabled:
2194
2053
            # Reschedule checker run
2195
 
            GLib.source_remove(self.checker_initiator_tag)
2196
 
            self.checker_initiator_tag = GLib.timeout_add(
 
2054
            gobject.source_remove(self.checker_initiator_tag)
 
2055
            self.checker_initiator_tag = gobject.timeout_add(
2197
2056
                value, self.start_checker)
2198
 
            self.start_checker()  # Start one now, too
2199
 
 
 
2057
            self.start_checker() # Start one now, too
 
2058
    
2200
2059
    # Checker - property
2201
2060
    @dbus_service_property(_interface,
2202
2061
                           signature="s",
2205
2064
        if value is None:       # get
2206
2065
            return dbus.String(self.checker_command)
2207
2066
        self.checker_command = str(value)
2208
 
 
 
2067
    
2209
2068
    # CheckerRunning - property
2210
2069
    @dbus_service_property(_interface,
2211
2070
                           signature="b",
2217
2076
            self.start_checker()
2218
2077
        else:
2219
2078
            self.stop_checker()
2220
 
 
 
2079
    
2221
2080
    # ObjectPath - property
2222
2081
    @dbus_annotations(
2223
2082
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2224
2083
         "org.freedesktop.DBus.Deprecated": "true"})
2225
2084
    @dbus_service_property(_interface, signature="o", access="read")
2226
2085
    def ObjectPath_dbus_property(self):
2227
 
        return self.dbus_object_path  # is already a dbus.ObjectPath
2228
 
 
 
2086
        return self.dbus_object_path # is already a dbus.ObjectPath
 
2087
    
2229
2088
    # Secret = property
2230
2089
    @dbus_annotations(
2231
2090
        {"org.freedesktop.DBus.Property.EmitsChangedSignal":
2236
2095
                           byte_arrays=True)
2237
2096
    def Secret_dbus_property(self, value):
2238
2097
        self.secret = bytes(value)
2239
 
 
 
2098
    
2240
2099
    del _interface
2241
2100
 
2242
2101
 
2243
 
class ProxyClient:
2244
 
    def __init__(self, child_pipe, key_id, fpr, address):
 
2102
class ProxyClient(object):
 
2103
    def __init__(self, child_pipe, fpr, address):
2245
2104
        self._pipe = child_pipe
2246
 
        self._pipe.send(('init', key_id, fpr, address))
 
2105
        self._pipe.send(('init', fpr, address))
2247
2106
        if not self._pipe.recv():
2248
 
            raise KeyError(key_id or fpr)
2249
 
 
 
2107
            raise KeyError(fpr)
 
2108
    
2250
2109
    def __getattribute__(self, name):
2251
2110
        if name == '_pipe':
2252
2111
            return super(ProxyClient, self).__getattribute__(name)
2255
2114
        if data[0] == 'data':
2256
2115
            return data[1]
2257
2116
        if data[0] == 'function':
2258
 
 
 
2117
            
2259
2118
            def func(*args, **kwargs):
2260
2119
                self._pipe.send(('funcall', name, args, kwargs))
2261
2120
                return self._pipe.recv()[1]
2262
 
 
 
2121
            
2263
2122
            return func
2264
 
 
 
2123
    
2265
2124
    def __setattr__(self, name, value):
2266
2125
        if name == '_pipe':
2267
2126
            return super(ProxyClient, self).__setattr__(name, value)
2270
2129
 
2271
2130
class ClientHandler(socketserver.BaseRequestHandler, object):
2272
2131
    """A class to handle client connections.
2273
 
 
 
2132
    
2274
2133
    Instantiated once for each connection to handle it.
2275
2134
    Note: This will run in its own forked process."""
2276
 
 
 
2135
    
2277
2136
    def handle(self):
2278
2137
        with contextlib.closing(self.server.child_pipe) as child_pipe:
2279
2138
            logger.info("TCP connection from: %s",
2280
2139
                        str(self.client_address))
2281
2140
            logger.debug("Pipe FD: %d",
2282
2141
                         self.server.child_pipe.fileno())
2283
 
 
 
2142
            
2284
2143
            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"))
 
2144
            
 
2145
            #priority = ':'.join(("NONE", "+VERS-TLS1.1",
 
2146
            #                      "+AES-256-CBC", "+SHA1",
 
2147
            #                      "+COMP-NULL", "+CTYPE-OPENPGP",
 
2148
            #                      "+DHE-DSS"))
2290
2149
            # Use a fallback default, since this MUST be set.
2291
2150
            priority = self.server.gnutls_priority
2292
2151
            if priority is None:
2293
2152
                priority = "NORMAL"
2294
 
            gnutls.priority_set_direct(session._c_object,
2295
 
                                       priority.encode("utf-8"),
 
2153
            gnutls.priority_set_direct(session._c_object, priority,
2296
2154
                                       None)
2297
 
 
 
2155
            
2298
2156
            # Start communication using the Mandos protocol
2299
2157
            # Get protocol number
2300
2158
            line = self.request.makefile().readline()
2305
2163
            except (ValueError, IndexError, RuntimeError) as error:
2306
2164
                logger.error("Unknown protocol version: %s", error)
2307
2165
                return
2308
 
 
 
2166
            
2309
2167
            # Start GnuTLS connection
2310
2168
            try:
2311
2169
                session.handshake()
2315
2173
                # established.  Just abandon the request.
2316
2174
                return
2317
2175
            logger.debug("Handshake succeeded")
2318
 
 
 
2176
            
2319
2177
            approval_required = False
2320
2178
            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,
 
2179
                try:
 
2180
                    fpr = self.fingerprint(
 
2181
                        self.peer_certificate(session))
 
2182
                except (TypeError, gnutls.Error) as error:
 
2183
                    logger.warning("Bad certificate: %s", error)
 
2184
                    return
 
2185
                logger.debug("Fingerprint: %s", fpr)
 
2186
                
 
2187
                try:
 
2188
                    client = ProxyClient(child_pipe, fpr,
2343
2189
                                         self.client_address)
2344
2190
                except KeyError:
2345
2191
                    return
2346
 
 
 
2192
                
2347
2193
                if client.approval_delay:
2348
2194
                    delay = client.approval_delay
2349
2195
                    client.approvals_pending += 1
2350
2196
                    approval_required = True
2351
 
 
 
2197
                
2352
2198
                while True:
2353
2199
                    if not client.enabled:
2354
2200
                        logger.info("Client %s is disabled",
2357
2203
                            # Emit D-Bus signal
2358
2204
                            client.Rejected("Disabled")
2359
2205
                        return
2360
 
 
 
2206
                    
2361
2207
                    if client.approved or not client.approval_delay:
2362
 
                        # We are approved or approval is disabled
 
2208
                        #We are approved or approval is disabled
2363
2209
                        break
2364
2210
                    elif client.approved is None:
2365
2211
                        logger.info("Client %s needs approval",
2376
2222
                            # Emit D-Bus signal
2377
2223
                            client.Rejected("Denied")
2378
2224
                        return
2379
 
 
2380
 
                    # wait until timeout or approved
 
2225
                    
 
2226
                    #wait until timeout or approved
2381
2227
                    time = datetime.datetime.now()
2382
2228
                    client.changedstate.acquire()
2383
2229
                    client.changedstate.wait(delay.total_seconds())
2396
2242
                            break
2397
2243
                    else:
2398
2244
                        delay -= time2 - time
2399
 
 
 
2245
                
2400
2246
                try:
2401
2247
                    session.send(client.secret)
2402
2248
                except gnutls.Error as error:
2403
2249
                    logger.warning("gnutls send failed",
2404
 
                                   exc_info=error)
 
2250
                                   exc_info = error)
2405
2251
                    return
2406
 
 
 
2252
                
2407
2253
                logger.info("Sending secret to %s", client.name)
2408
2254
                # bump the timeout using extended_timeout
2409
2255
                client.bump_timeout(client.extended_timeout)
2410
2256
                if self.server.use_dbus:
2411
2257
                    # Emit D-Bus signal
2412
2258
                    client.GotSecret()
2413
 
 
 
2259
            
2414
2260
            finally:
2415
2261
                if approval_required:
2416
2262
                    client.approvals_pending -= 1
2419
2265
                except gnutls.Error as error:
2420
2266
                    logger.warning("GnuTLS bye failed",
2421
2267
                                   exc_info=error)
2422
 
 
 
2268
    
2423
2269
    @staticmethod
2424
2270
    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)
 
2271
        "Return the peer's OpenPGP certificate as a bytestring"
 
2272
        # If not an OpenPGP certificate...
 
2273
        if (gnutls.certificate_type_get(session._c_object)
 
2274
            != gnutls.CRT_OPENPGP):
2439
2275
            # ...return invalid data
2440
2276
            return b""
2441
2277
        list_size = ctypes.c_uint(1)
2447
2283
            return None
2448
2284
        cert = cert_list[0]
2449
2285
        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
 
 
 
2286
    
2485
2287
    @staticmethod
2486
2288
    def fingerprint(openpgp):
2487
2289
        "Convert an OpenPGP bytestring to a hexdigit fingerprint"
2502
2304
                                       ctypes.byref(crtverify))
2503
2305
        if crtverify.value != 0:
2504
2306
            gnutls.openpgp_crt_deinit(crt)
2505
 
            raise gnutls.CertificateSecurityError(code
2506
 
                                                  =crtverify.value)
 
2307
            raise gnutls.CertificateSecurityError("Verify failed")
2507
2308
        # New buffer for the fingerprint
2508
2309
        buf = ctypes.create_string_buffer(20)
2509
2310
        buf_len = ctypes.c_size_t()
2519
2320
        return hex_fpr
2520
2321
 
2521
2322
 
2522
 
class MultiprocessingMixIn:
 
2323
class MultiprocessingMixIn(object):
2523
2324
    """Like socketserver.ThreadingMixIn, but with multiprocessing"""
2524
 
 
 
2325
    
2525
2326
    def sub_process_main(self, request, address):
2526
2327
        try:
2527
2328
            self.finish_request(request, address)
2528
2329
        except Exception:
2529
2330
            self.handle_error(request, address)
2530
2331
        self.close_request(request)
2531
 
 
 
2332
    
2532
2333
    def process_request(self, request, address):
2533
2334
        """Start a new process to process the request."""
2534
 
        proc = multiprocessing.Process(target=self.sub_process_main,
2535
 
                                       args=(request, address))
 
2335
        proc = multiprocessing.Process(target = self.sub_process_main,
 
2336
                                       args = (request, address))
2536
2337
        proc.start()
2537
2338
        return proc
2538
2339
 
2539
2340
 
2540
 
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
 
2341
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2541
2342
    """ adds a pipe to the MixIn """
2542
 
 
 
2343
    
2543
2344
    def process_request(self, request, client_address):
2544
2345
        """Overrides and wraps the original process_request().
2545
 
 
 
2346
        
2546
2347
        This function creates a new pipe in self.pipe
2547
2348
        """
2548
2349
        parent_pipe, self.child_pipe = multiprocessing.Pipe()
2549
 
 
 
2350
        
2550
2351
        proc = MultiprocessingMixIn.process_request(self, request,
2551
2352
                                                    client_address)
2552
2353
        self.child_pipe.close()
2553
2354
        self.add_pipe(parent_pipe, proc)
2554
 
 
 
2355
    
2555
2356
    def add_pipe(self, parent_pipe, proc):
2556
2357
        """Dummy function; override as necessary"""
2557
2358
        raise NotImplementedError()
2558
2359
 
2559
2360
 
2560
2361
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2561
 
                     socketserver.TCPServer):
 
2362
                     socketserver.TCPServer, object):
2562
2363
    """IPv6-capable TCP server.  Accepts 'None' as address and/or port
2563
 
 
 
2364
    
2564
2365
    Attributes:
2565
2366
        enabled:        Boolean; whether this server is activated yet
2566
2367
        interface:      None or a network interface name (string)
2567
2368
        use_ipv6:       Boolean; to use IPv6 or not
2568
2369
    """
2569
 
 
 
2370
    
2570
2371
    def __init__(self, server_address, RequestHandlerClass,
2571
2372
                 interface=None,
2572
2373
                 use_ipv6=True,
2582
2383
            self.socketfd = socketfd
2583
2384
            # Save the original socket.socket() function
2584
2385
            self.socket_socket = socket.socket
2585
 
 
2586
2386
            # To implement --socket, we monkey patch socket.socket.
2587
 
            #
 
2387
            # 
2588
2388
            # (When socketserver.TCPServer is a new-style class, we
2589
2389
            # could make self.socket into a property instead of monkey
2590
2390
            # patching socket.socket.)
2591
 
            #
 
2391
            # 
2592
2392
            # Create a one-time-only replacement for socket.socket()
2593
2393
            @functools.wraps(socket.socket)
2594
2394
            def socket_wrapper(*args, **kwargs):
2606
2406
        # socket_wrapper(), if socketfd was set.
2607
2407
        socketserver.TCPServer.__init__(self, server_address,
2608
2408
                                        RequestHandlerClass)
2609
 
 
 
2409
    
2610
2410
    def server_bind(self):
2611
2411
        """This overrides the normal server_bind() function
2612
2412
        to bind to an interface if one was specified, and also NOT to
2613
2413
        bind to an address or port if they were not specified."""
2614
 
        global SO_BINDTODEVICE
2615
2414
        if self.interface is not None:
2616
2415
            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
 
2416
                logger.error("SO_BINDTODEVICE does not exist;"
 
2417
                             " cannot bind to interface %s",
 
2418
                             self.interface)
 
2419
            else:
 
2420
                try:
 
2421
                    self.socket.setsockopt(
 
2422
                        socket.SOL_SOCKET, SO_BINDTODEVICE,
 
2423
                        (self.interface + "\0").encode("utf-8"))
 
2424
                except socket.error as error:
 
2425
                    if error.errno == errno.EPERM:
 
2426
                        logger.error("No permission to bind to"
 
2427
                                     " interface %s", self.interface)
 
2428
                    elif error.errno == errno.ENOPROTOOPT:
 
2429
                        logger.error("SO_BINDTODEVICE not available;"
 
2430
                                     " cannot bind to interface %s",
 
2431
                                     self.interface)
 
2432
                    elif error.errno == errno.ENODEV:
 
2433
                        logger.error("Interface %s does not exist,"
 
2434
                                     " cannot bind", self.interface)
 
2435
                    else:
 
2436
                        raise
2638
2437
        # Only bind(2) the socket if we really need to.
2639
2438
        if self.server_address[0] or self.server_address[1]:
2640
 
            if self.server_address[1]:
2641
 
                self.allow_reuse_address = True
2642
2439
            if not self.server_address[0]:
2643
2440
                if self.address_family == socket.AF_INET6:
2644
 
                    any_address = "::"  # in6addr_any
 
2441
                    any_address = "::" # in6addr_any
2645
2442
                else:
2646
 
                    any_address = "0.0.0.0"  # INADDR_ANY
 
2443
                    any_address = "0.0.0.0" # INADDR_ANY
2647
2444
                self.server_address = (any_address,
2648
2445
                                       self.server_address[1])
2649
2446
            elif not self.server_address[1]:
2659
2456
 
2660
2457
class MandosServer(IPv6_TCPServer):
2661
2458
    """Mandos server.
2662
 
 
 
2459
    
2663
2460
    Attributes:
2664
2461
        clients:        set of Client objects
2665
2462
        gnutls_priority GnuTLS priority string
2666
2463
        use_dbus:       Boolean; to emit D-Bus signals or not
2667
 
 
2668
 
    Assumes a GLib.MainLoop event loop.
 
2464
    
 
2465
    Assumes a gobject.MainLoop event loop.
2669
2466
    """
2670
 
 
 
2467
    
2671
2468
    def __init__(self, server_address, RequestHandlerClass,
2672
2469
                 interface=None,
2673
2470
                 use_ipv6=True,
2683
2480
        self.gnutls_priority = gnutls_priority
2684
2481
        IPv6_TCPServer.__init__(self, server_address,
2685
2482
                                RequestHandlerClass,
2686
 
                                interface=interface,
2687
 
                                use_ipv6=use_ipv6,
2688
 
                                socketfd=socketfd)
2689
 
 
 
2483
                                interface = interface,
 
2484
                                use_ipv6 = use_ipv6,
 
2485
                                socketfd = socketfd)
 
2486
    
2690
2487
    def server_activate(self):
2691
2488
        if self.enabled:
2692
2489
            return socketserver.TCPServer.server_activate(self)
2693
 
 
 
2490
    
2694
2491
    def enable(self):
2695
2492
        self.enabled = True
2696
 
 
 
2493
    
2697
2494
    def add_pipe(self, parent_pipe, proc):
2698
2495
        # 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,
 
2496
        gobject.io_add_watch(
 
2497
            parent_pipe.fileno(),
 
2498
            gobject.IO_IN | gobject.IO_HUP,
2702
2499
            functools.partial(self.handle_ipc,
2703
 
                              parent_pipe=parent_pipe,
2704
 
                              proc=proc))
2705
 
 
 
2500
                              parent_pipe = parent_pipe,
 
2501
                              proc = proc))
 
2502
    
2706
2503
    def handle_ipc(self, source, condition,
2707
2504
                   parent_pipe=None,
2708
 
                   proc=None,
 
2505
                   proc = None,
2709
2506
                   client_object=None):
2710
2507
        # error, or the other end of multiprocessing.Pipe has closed
2711
 
        if condition & (GLib.IO_ERR | GLib.IO_HUP):
 
2508
        if condition & (gobject.IO_ERR | gobject.IO_HUP):
2712
2509
            # Wait for other process to exit
2713
2510
            proc.join()
2714
2511
            return False
2715
 
 
 
2512
        
2716
2513
        # Read a request from the child
2717
2514
        request = parent_pipe.recv()
2718
2515
        command = request[0]
2719
 
 
 
2516
        
2720
2517
        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:
 
2518
            fpr = request[1]
 
2519
            address = request[2]
 
2520
            
 
2521
            for c in self.clients.itervalues():
 
2522
                if c.fingerprint == fpr:
2732
2523
                    client = c
2733
2524
                    break
2734
2525
            else:
2735
 
                logger.info("Client not found for key ID: %s, address"
2736
 
                            ": %s", key_id or fpr, address)
 
2526
                logger.info("Client not found for fingerprint: %s, ad"
 
2527
                            "dress: %s", fpr, address)
2737
2528
                if self.use_dbus:
2738
2529
                    # Emit D-Bus signal
2739
 
                    mandos_dbus_service.ClientNotFound(key_id or fpr,
 
2530
                    mandos_dbus_service.ClientNotFound(fpr,
2740
2531
                                                       address[0])
2741
2532
                parent_pipe.send(False)
2742
2533
                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,
 
2534
            
 
2535
            gobject.io_add_watch(
 
2536
                parent_pipe.fileno(),
 
2537
                gobject.IO_IN | gobject.IO_HUP,
2747
2538
                functools.partial(self.handle_ipc,
2748
 
                                  parent_pipe=parent_pipe,
2749
 
                                  proc=proc,
2750
 
                                  client_object=client))
 
2539
                                  parent_pipe = parent_pipe,
 
2540
                                  proc = proc,
 
2541
                                  client_object = client))
2751
2542
            parent_pipe.send(True)
2752
2543
            # remove the old hook in favor of the new above hook on
2753
2544
            # same fileno
2756
2547
            funcname = request[1]
2757
2548
            args = request[2]
2758
2549
            kwargs = request[3]
2759
 
 
 
2550
            
2760
2551
            parent_pipe.send(('data', getattr(client_object,
2761
2552
                                              funcname)(*args,
2762
2553
                                                        **kwargs)))
2763
 
 
 
2554
        
2764
2555
        if command == 'getattr':
2765
2556
            attrname = request[1]
2766
2557
            if isinstance(client_object.__getattribute__(attrname),
2767
 
                          collections.abc.Callable):
 
2558
                          collections.Callable):
2768
2559
                parent_pipe.send(('function', ))
2769
2560
            else:
2770
2561
                parent_pipe.send((
2771
2562
                    'data', client_object.__getattribute__(attrname)))
2772
 
 
 
2563
        
2773
2564
        if command == 'setattr':
2774
2565
            attrname = request[1]
2775
2566
            value = request[2]
2776
2567
            setattr(client_object, attrname, value)
2777
 
 
 
2568
        
2778
2569
        return True
2779
2570
 
2780
2571
 
2781
2572
def rfc3339_duration_to_delta(duration):
2782
2573
    """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
 
2574
    
 
2575
    >>> rfc3339_duration_to_delta("P7D")
 
2576
    datetime.timedelta(7)
 
2577
    >>> rfc3339_duration_to_delta("PT60S")
 
2578
    datetime.timedelta(0, 60)
 
2579
    >>> rfc3339_duration_to_delta("PT60M")
 
2580
    datetime.timedelta(0, 3600)
 
2581
    >>> rfc3339_duration_to_delta("PT24H")
 
2582
    datetime.timedelta(1)
 
2583
    >>> rfc3339_duration_to_delta("P1W")
 
2584
    datetime.timedelta(7)
 
2585
    >>> rfc3339_duration_to_delta("PT5M30S")
 
2586
    datetime.timedelta(0, 330)
 
2587
    >>> rfc3339_duration_to_delta("P1DT3M20S")
 
2588
    datetime.timedelta(1, 200)
2798
2589
    """
2799
 
 
 
2590
    
2800
2591
    # Parsing an RFC 3339 duration with regular expressions is not
2801
2592
    # possible - there would have to be multiple places for the same
2802
2593
    # values, like seconds.  The current code, while more esoteric, is
2803
2594
    # cleaner without depending on a parsing library.  If Python had a
2804
2595
    # built-in library for parsing we would use it, but we'd like to
2805
2596
    # avoid excessive use of external libraries.
2806
 
 
 
2597
    
2807
2598
    # New type for defining tokens, syntax, and semantics all-in-one
2808
2599
    Token = collections.namedtuple("Token", (
2809
2600
        "regexp",  # To match token; if "value" is not None, must have
2842
2633
                           frozenset((token_year, token_month,
2843
2634
                                      token_day, token_time,
2844
2635
                                      token_week)))
2845
 
    # Define starting values:
2846
 
    # Value so far
2847
 
    value = datetime.timedelta()
 
2636
    # Define starting values
 
2637
    value = datetime.timedelta() # Value so far
2848
2638
    found_token = None
2849
 
    # Following valid tokens
2850
 
    followers = frozenset((token_duration, ))
2851
 
    # String left to parse
2852
 
    s = duration
 
2639
    followers = frozenset((token_duration, )) # Following valid tokens
 
2640
    s = duration                # String left to parse
2853
2641
    # Loop until end token is found
2854
2642
    while found_token is not token_end:
2855
2643
        # Search for any currently valid tokens
2879
2667
 
2880
2668
def string_to_delta(interval):
2881
2669
    """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
 
2670
    
 
2671
    >>> string_to_delta('7d')
 
2672
    datetime.timedelta(7)
 
2673
    >>> string_to_delta('60s')
 
2674
    datetime.timedelta(0, 60)
 
2675
    >>> string_to_delta('60m')
 
2676
    datetime.timedelta(0, 3600)
 
2677
    >>> string_to_delta('24h')
 
2678
    datetime.timedelta(1)
 
2679
    >>> string_to_delta('1w')
 
2680
    datetime.timedelta(7)
 
2681
    >>> string_to_delta('5m 30s')
 
2682
    datetime.timedelta(0, 330)
2895
2683
    """
2896
 
 
 
2684
    
2897
2685
    try:
2898
2686
        return rfc3339_duration_to_delta(interval)
2899
2687
    except ValueError:
2900
2688
        pass
2901
 
 
 
2689
    
2902
2690
    timevalue = datetime.timedelta(0)
2903
2691
    for s in interval.split():
2904
2692
        try:
2922
2710
    return timevalue
2923
2711
 
2924
2712
 
2925
 
def daemon(nochdir=False, noclose=False):
 
2713
def daemon(nochdir = False, noclose = False):
2926
2714
    """See daemon(3).  Standard BSD Unix function.
2927
 
 
 
2715
    
2928
2716
    This should really exist as os.daemon, but it doesn't (yet)."""
2929
2717
    if os.fork():
2930
2718
        sys.exit()
2948
2736
 
2949
2737
 
2950
2738
def main():
2951
 
 
 
2739
    
2952
2740
    ##################################################################
2953
2741
    # Parsing of options, both command line and config file
2954
 
 
 
2742
    
2955
2743
    parser = argparse.ArgumentParser()
2956
2744
    parser.add_argument("-v", "--version", action="version",
2957
 
                        version="%(prog)s {}".format(version),
 
2745
                        version = "%(prog)s {}".format(version),
2958
2746
                        help="show version number and exit")
2959
2747
    parser.add_argument("-i", "--interface", metavar="IF",
2960
2748
                        help="Bind to interface IF")
2996
2784
    parser.add_argument("--no-zeroconf", action="store_false",
2997
2785
                        dest="zeroconf", help="Do not use Zeroconf",
2998
2786
                        default=None)
2999
 
 
 
2787
    
3000
2788
    options = parser.parse_args()
3001
 
 
 
2789
    
 
2790
    if options.check:
 
2791
        import doctest
 
2792
        fail_count, test_count = doctest.testmod()
 
2793
        sys.exit(os.EX_OK if fail_count == 0 else 1)
 
2794
    
3002
2795
    # 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
 
 
 
2796
    server_defaults = { "interface": "",
 
2797
                        "address": "",
 
2798
                        "port": "",
 
2799
                        "debug": "False",
 
2800
                        "priority":
 
2801
                        "SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
 
2802
                        ":+SIGN-DSA-SHA256",
 
2803
                        "servicename": "Mandos",
 
2804
                        "use_dbus": "True",
 
2805
                        "use_ipv6": "True",
 
2806
                        "debuglevel": "",
 
2807
                        "restore": "True",
 
2808
                        "socket": "",
 
2809
                        "statedir": "/var/lib/mandos",
 
2810
                        "foreground": "False",
 
2811
                        "zeroconf": "True",
 
2812
                    }
 
2813
    
3026
2814
    # Parse config file for server-global settings
3027
 
    server_config = configparser.ConfigParser(server_defaults)
 
2815
    server_config = configparser.SafeConfigParser(server_defaults)
3028
2816
    del server_defaults
3029
2817
    server_config.read(os.path.join(options.configdir, "mandos.conf"))
3030
 
    # Convert the ConfigParser object to a dict
 
2818
    # Convert the SafeConfigParser object to a dict
3031
2819
    server_settings = server_config.defaults()
3032
2820
    # Use the appropriate methods on the non-string config options
3033
 
    for option in ("debug", "use_dbus", "use_ipv6", "restore",
3034
 
                   "foreground", "zeroconf"):
 
2821
    for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
3035
2822
        server_settings[option] = server_config.getboolean("DEFAULT",
3036
2823
                                                           option)
3037
2824
    if server_settings["port"]:
3047
2834
            server_settings["socket"] = os.dup(server_settings
3048
2835
                                               ["socket"])
3049
2836
    del server_config
3050
 
 
 
2837
    
3051
2838
    # Override the settings from the config file with command line
3052
2839
    # options, if set.
3053
2840
    for option in ("interface", "address", "port", "debug",
3071
2858
    if server_settings["debug"]:
3072
2859
        server_settings["foreground"] = True
3073
2860
    # Now we have our good server settings in "server_settings"
3074
 
 
 
2861
    
3075
2862
    ##################################################################
3076
 
 
 
2863
    
3077
2864
    if (not server_settings["zeroconf"]
3078
2865
        and not (server_settings["port"]
3079
2866
                 or server_settings["socket"] != "")):
3080
2867
        parser.error("Needs port or socket to work without Zeroconf")
3081
 
 
 
2868
    
3082
2869
    # For convenience
3083
2870
    debug = server_settings["debug"]
3084
2871
    debuglevel = server_settings["debuglevel"]
3088
2875
                                     stored_state_file)
3089
2876
    foreground = server_settings["foreground"]
3090
2877
    zeroconf = server_settings["zeroconf"]
3091
 
 
 
2878
    
3092
2879
    if debug:
3093
2880
        initlogger(debug, logging.DEBUG)
3094
2881
    else:
3097
2884
        else:
3098
2885
            level = getattr(logging, debuglevel.upper())
3099
2886
            initlogger(debug, level)
3100
 
 
 
2887
    
3101
2888
    if server_settings["servicename"] != "Mandos":
3102
2889
        syslogger.setFormatter(
3103
2890
            logging.Formatter('Mandos ({}) [%(process)d]:'
3104
2891
                              ' %(levelname)s: %(message)s'.format(
3105
2892
                                  server_settings["servicename"])))
3106
 
 
 
2893
    
3107
2894
    # Parse config file with clients
3108
 
    client_config = configparser.ConfigParser(Client.client_defaults)
 
2895
    client_config = configparser.SafeConfigParser(Client
 
2896
                                                  .client_defaults)
3109
2897
    client_config.read(os.path.join(server_settings["configdir"],
3110
2898
                                    "clients.conf"))
3111
 
 
 
2899
    
3112
2900
    global mandos_dbus_service
3113
2901
    mandos_dbus_service = None
3114
 
 
 
2902
    
3115
2903
    socketfd = None
3116
2904
    if server_settings["socket"] != "":
3117
2905
        socketfd = server_settings["socket"]
3133
2921
        except IOError as e:
3134
2922
            logger.error("Could not open file %r", pidfilename,
3135
2923
                         exc_info=e)
3136
 
 
 
2924
    
3137
2925
    for name, group in (("_mandos", "_mandos"),
3138
2926
                        ("mandos", "mandos"),
3139
2927
                        ("nobody", "nogroup")):
3149
2937
    try:
3150
2938
        os.setgid(gid)
3151
2939
        os.setuid(uid)
3152
 
        if debug:
3153
 
            logger.debug("Did setuid/setgid to {}:{}".format(uid,
3154
 
                                                             gid))
3155
2940
    except OSError as error:
3156
 
        logger.warning("Failed to setuid/setgid to {}:{}: {}"
3157
 
                       .format(uid, gid, os.strerror(error.errno)))
3158
2941
        if error.errno != errno.EPERM:
3159
2942
            raise
3160
 
 
 
2943
    
3161
2944
    if debug:
3162
2945
        # Enable all possible GnuTLS debugging
3163
 
 
 
2946
        
3164
2947
        # "Use a log level over 10 to enable all debugging options."
3165
2948
        # - GnuTLS manual
3166
2949
        gnutls.global_set_log_level(11)
3167
 
 
 
2950
        
3168
2951
        @gnutls.log_func
3169
2952
        def debug_gnutls(level, string):
3170
2953
            logger.debug("GnuTLS: %s", string[:-1])
3171
 
 
 
2954
        
3172
2955
        gnutls.global_set_log_function(debug_gnutls)
3173
 
 
 
2956
        
3174
2957
        # Redirect stdin so all checkers get /dev/null
3175
2958
        null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3176
2959
        os.dup2(null, sys.stdin.fileno())
3177
2960
        if null > 2:
3178
2961
            os.close(null)
3179
 
 
 
2962
    
3180
2963
    # Need to fork before connecting to D-Bus
3181
2964
    if not foreground:
3182
2965
        # Close all input and output, do double fork, etc.
3183
2966
        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
 
 
 
2967
    
 
2968
    # multiprocessing will use threads, so before we use gobject we
 
2969
    # need to inform gobject that threads will be used.
 
2970
    gobject.threads_init()
 
2971
    
3190
2972
    global main_loop
3191
2973
    # From the Avahi example code
3192
2974
    DBusGMainLoop(set_as_default=True)
3193
 
    main_loop = GLib.MainLoop()
 
2975
    main_loop = gobject.MainLoop()
3194
2976
    bus = dbus.SystemBus()
3195
2977
    # End of Avahi example code
3196
2978
    if use_dbus:
3209
2991
    if zeroconf:
3210
2992
        protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3211
2993
        service = AvahiServiceToSyslog(
3212
 
            name=server_settings["servicename"],
3213
 
            servicetype="_mandos._tcp",
3214
 
            protocol=protocol,
3215
 
            bus=bus)
 
2994
            name = server_settings["servicename"],
 
2995
            servicetype = "_mandos._tcp",
 
2996
            protocol = protocol,
 
2997
            bus = bus)
3216
2998
        if server_settings["interface"]:
3217
2999
            service.interface = if_nametoindex(
3218
3000
                server_settings["interface"].encode("utf-8"))
3219
 
 
 
3001
    
3220
3002
    global multiprocessing_manager
3221
3003
    multiprocessing_manager = multiprocessing.Manager()
3222
 
 
 
3004
    
3223
3005
    client_class = Client
3224
3006
    if use_dbus:
3225
 
        client_class = functools.partial(ClientDBus, bus=bus)
3226
 
 
 
3007
        client_class = functools.partial(ClientDBus, bus = bus)
 
3008
    
3227
3009
    client_settings = Client.config_parser(client_config)
3228
3010
    old_client_settings = {}
3229
3011
    clients_data = {}
3230
 
 
 
3012
    
3231
3013
    # This is used to redirect stdout and stderr for checker processes
3232
3014
    global wnull
3233
 
    wnull = open(os.devnull, "w")  # A writable /dev/null
 
3015
    wnull = open(os.devnull, "w") # A writable /dev/null
3234
3016
    # Only used if server is running in foreground but not in debug
3235
3017
    # mode
3236
3018
    if debug or not foreground:
3237
3019
        wnull.close()
3238
 
 
 
3020
    
3239
3021
    # Get client data and settings from last running state.
3240
3022
    if server_settings["restore"]:
3241
3023
        try:
3242
3024
            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"))
 
3025
                clients_data, old_client_settings = pickle.load(
 
3026
                    stored_state)
3293
3027
            os.remove(stored_state_path)
3294
3028
        except IOError as e:
3295
3029
            if e.errno == errno.ENOENT:
3303
3037
            logger.warning("Could not load persistent state: "
3304
3038
                           "EOFError:",
3305
3039
                           exc_info=e)
3306
 
 
 
3040
    
3307
3041
    with PGPEngine() as pgp:
3308
3042
        for client_name, client in clients_data.items():
3309
3043
            # Skip removed clients
3310
3044
            if client_name not in client_settings:
3311
3045
                continue
3312
 
 
 
3046
            
3313
3047
            # Decide which value to use after restoring saved state.
3314
3048
            # We have three different values: Old config file,
3315
3049
            # new config file, and saved state.
3326
3060
                        client[name] = value
3327
3061
                except KeyError:
3328
3062
                    pass
3329
 
 
 
3063
            
3330
3064
            # Clients who has passed its expire date can still be
3331
3065
            # enabled if its last checker was successful.  A Client
3332
3066
            # whose checker succeeded before we stored its state is
3365
3099
                    client_name))
3366
3100
                client["secret"] = (client_settings[client_name]
3367
3101
                                    ["secret"])
3368
 
 
 
3102
    
3369
3103
    # Add/remove clients based on new changes made to config
3370
3104
    for client_name in (set(old_client_settings)
3371
3105
                        - set(client_settings)):
3373
3107
    for client_name in (set(client_settings)
3374
3108
                        - set(old_client_settings)):
3375
3109
        clients_data[client_name] = client_settings[client_name]
3376
 
 
 
3110
    
3377
3111
    # Create all client objects
3378
3112
    for client_name, client in clients_data.items():
3379
3113
        tcp_server.clients[client_name] = client_class(
3380
 
            name=client_name,
3381
 
            settings=client,
3382
 
            server_settings=server_settings)
3383
 
 
 
3114
            name = client_name,
 
3115
            settings = client,
 
3116
            server_settings = server_settings)
 
3117
    
3384
3118
    if not tcp_server.clients:
3385
3119
        logger.warning("No clients defined")
3386
 
 
 
3120
    
3387
3121
    if not foreground:
3388
3122
        if pidfile is not None:
3389
3123
            pid = os.getpid()
3395
3129
                             pidfilename, pid)
3396
3130
        del pidfile
3397
3131
        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
 
 
 
3132
    
 
3133
    signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
 
3134
    signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
 
3135
    
3403
3136
    if use_dbus:
3404
 
 
 
3137
        
3405
3138
        @alternate_dbus_interfaces(
3406
 
            {"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
 
3139
            { "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3407
3140
        class MandosDBusService(DBusObjectWithObjectManager):
3408
3141
            """A D-Bus proxy object"""
3409
 
 
 
3142
            
3410
3143
            def __init__(self):
3411
3144
                dbus.service.Object.__init__(self, bus, "/")
3412
 
 
 
3145
            
3413
3146
            _interface = "se.recompile.Mandos"
3414
 
 
 
3147
            
3415
3148
            @dbus.service.signal(_interface, signature="o")
3416
3149
            def ClientAdded(self, objpath):
3417
3150
                "D-Bus signal"
3418
3151
                pass
3419
 
 
 
3152
            
3420
3153
            @dbus.service.signal(_interface, signature="ss")
3421
 
            def ClientNotFound(self, key_id, address):
 
3154
            def ClientNotFound(self, fingerprint, address):
3422
3155
                "D-Bus signal"
3423
3156
                pass
3424
 
 
 
3157
            
3425
3158
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
3426
3159
                               "true"})
3427
3160
            @dbus.service.signal(_interface, signature="os")
3428
3161
            def ClientRemoved(self, objpath, name):
3429
3162
                "D-Bus signal"
3430
3163
                pass
3431
 
 
 
3164
            
3432
3165
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
3433
3166
                               "true"})
3434
3167
            @dbus.service.method(_interface, out_signature="ao")
3435
3168
            def GetAllClients(self):
3436
3169
                "D-Bus method"
3437
3170
                return dbus.Array(c.dbus_object_path for c in
3438
 
                                  tcp_server.clients.values())
3439
 
 
 
3171
                                  tcp_server.clients.itervalues())
 
3172
            
3440
3173
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
3441
3174
                               "true"})
3442
3175
            @dbus.service.method(_interface,
3444
3177
            def GetAllClientsWithProperties(self):
3445
3178
                "D-Bus method"
3446
3179
                return dbus.Dictionary(
3447
 
                    {c.dbus_object_path: c.GetAll(
 
3180
                    { c.dbus_object_path: c.GetAll(
3448
3181
                        "se.recompile.Mandos.Client")
3449
 
                     for c in tcp_server.clients.values()},
 
3182
                      for c in tcp_server.clients.itervalues() },
3450
3183
                    signature="oa{sv}")
3451
 
 
 
3184
            
3452
3185
            @dbus.service.method(_interface, in_signature="o")
3453
3186
            def RemoveClient(self, object_path):
3454
3187
                "D-Bus method"
3455
 
                for c in tcp_server.clients.values():
 
3188
                for c in tcp_server.clients.itervalues():
3456
3189
                    if c.dbus_object_path == object_path:
3457
3190
                        del tcp_server.clients[c.name]
3458
3191
                        c.remove_from_connection()
3462
3195
                        self.client_removed_signal(c)
3463
3196
                        return
3464
3197
                raise KeyError(object_path)
3465
 
 
 
3198
            
3466
3199
            del _interface
3467
 
 
 
3200
            
3468
3201
            @dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3469
 
                                 out_signature="a{oa{sa{sv}}}")
 
3202
                                 out_signature = "a{oa{sa{sv}}}")
3470
3203
            def GetManagedObjects(self):
3471
3204
                """D-Bus method"""
3472
3205
                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
 
 
 
3206
                    { client.dbus_object_path:
 
3207
                      dbus.Dictionary(
 
3208
                          { interface: client.GetAll(interface)
 
3209
                            for interface in
 
3210
                                 client._get_all_interface_names()})
 
3211
                      for client in tcp_server.clients.values()})
 
3212
            
3480
3213
            def client_added_signal(self, client):
3481
3214
                """Send the new standard signal and the old signal"""
3482
3215
                if use_dbus:
3484
3217
                    self.InterfacesAdded(
3485
3218
                        client.dbus_object_path,
3486
3219
                        dbus.Dictionary(
3487
 
                            {interface: client.GetAll(interface)
3488
 
                             for interface in
3489
 
                             client._get_all_interface_names()}))
 
3220
                            { interface: client.GetAll(interface)
 
3221
                              for interface in
 
3222
                              client._get_all_interface_names()}))
3490
3223
                    # Old signal
3491
3224
                    self.ClientAdded(client.dbus_object_path)
3492
 
 
 
3225
            
3493
3226
            def client_removed_signal(self, client):
3494
3227
                """Send the new standard signal and the old signal"""
3495
3228
                if use_dbus:
3500
3233
                    # Old signal
3501
3234
                    self.ClientRemoved(client.dbus_object_path,
3502
3235
                                       client.name)
3503
 
 
 
3236
        
3504
3237
        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
 
 
 
3238
    
3511
3239
    def cleanup():
3512
3240
        "Cleanup function; run on exit"
3513
3241
        if zeroconf:
3514
3242
            service.cleanup()
3515
 
 
3516
 
        mp.active_children()
3517
 
        wn.close()
 
3243
        
 
3244
        multiprocessing.active_children()
 
3245
        wnull.close()
3518
3246
        if not (tcp_server.clients or client_settings):
3519
3247
            return
3520
 
 
 
3248
        
3521
3249
        # Store client before exiting. Secrets are encrypted with key
3522
3250
        # based on what config file has. If config file is
3523
3251
        # removed/edited, old secret will thus be unrecovable.
3524
3252
        clients = {}
3525
3253
        with PGPEngine() as pgp:
3526
 
            for client in tcp_server.clients.values():
 
3254
            for client in tcp_server.clients.itervalues():
3527
3255
                key = client_settings[client.name]["secret"]
3528
3256
                client.encrypted_secret = pgp.encrypt(client.secret,
3529
3257
                                                      key)
3530
3258
                client_dict = {}
3531
 
 
 
3259
                
3532
3260
                # A list of attributes that can not be pickled
3533
3261
                # + secret.
3534
 
                exclude = {"bus", "changedstate", "secret",
3535
 
                           "checker", "server_settings"}
 
3262
                exclude = { "bus", "changedstate", "secret",
 
3263
                            "checker", "server_settings" }
3536
3264
                for name, typ in inspect.getmembers(dbus.service
3537
3265
                                                    .Object):
3538
3266
                    exclude.add(name)
3539
 
 
 
3267
                
3540
3268
                client_dict["encrypted_secret"] = (client
3541
3269
                                                   .encrypted_secret)
3542
3270
                for attr in client.client_structure:
3543
3271
                    if attr not in exclude:
3544
3272
                        client_dict[attr] = getattr(client, attr)
3545
 
 
 
3273
                
3546
3274
                clients[client.name] = client_dict
3547
3275
                del client_settings[client.name]["secret"]
3548
 
 
 
3276
        
3549
3277
        try:
3550
3278
            with tempfile.NamedTemporaryFile(
3551
3279
                    mode='wb',
3553
3281
                    prefix='clients-',
3554
3282
                    dir=os.path.dirname(stored_state_path),
3555
3283
                    delete=False) as stored_state:
3556
 
                pickle.dump((clients, client_settings), stored_state,
3557
 
                            protocol=2)
 
3284
                pickle.dump((clients, client_settings), stored_state)
3558
3285
                tempname = stored_state.name
3559
3286
            os.rename(tempname, stored_state_path)
3560
3287
        except (IOError, OSError) as e:
3570
3297
                logger.warning("Could not save persistent state:",
3571
3298
                               exc_info=e)
3572
3299
                raise
3573
 
 
 
3300
        
3574
3301
        # Delete all clients, and settings from config
3575
3302
        while tcp_server.clients:
3576
3303
            name, client = tcp_server.clients.popitem()
3582
3309
            if use_dbus:
3583
3310
                mandos_dbus_service.client_removed_signal(client)
3584
3311
        client_settings.clear()
3585
 
 
 
3312
    
3586
3313
    atexit.register(cleanup)
3587
 
 
3588
 
    for client in tcp_server.clients.values():
 
3314
    
 
3315
    for client in tcp_server.clients.itervalues():
3589
3316
        if use_dbus:
3590
3317
            # Emit D-Bus signal for adding
3591
3318
            mandos_dbus_service.client_added_signal(client)
3592
3319
        # Need to initiate checking of clients
3593
3320
        if client.enabled:
3594
3321
            client.init_checker()
3595
 
 
 
3322
    
3596
3323
    tcp_server.enable()
3597
3324
    tcp_server.server_activate()
3598
 
 
 
3325
    
3599
3326
    # Find out what port we got
3600
3327
    if zeroconf:
3601
3328
        service.port = tcp_server.socket.getsockname()[1]
3606
3333
    else:                       # IPv4
3607
3334
        logger.info("Now listening on address %r, port %d",
3608
3335
                    *tcp_server.socket.getsockname())
3609
 
 
3610
 
    # service.interface = tcp_server.socket.getsockname()[3]
3611
 
 
 
3336
    
 
3337
    #service.interface = tcp_server.socket.getsockname()[3]
 
3338
    
3612
3339
    try:
3613
3340
        if zeroconf:
3614
3341
            # From the Avahi example code
3619
3346
                cleanup()
3620
3347
                sys.exit(1)
3621
3348
            # 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
 
 
 
3349
        
 
3350
        gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
 
3351
                             lambda *args, **kwargs:
 
3352
                             (tcp_server.handle_request
 
3353
                              (*args[2:], **kwargs) or True))
 
3354
        
3629
3355
        logger.debug("Starting main loop")
3630
3356
        main_loop.run()
3631
3357
    except AvahiError as error:
3640
3366
    # Must run before the D-Bus bus name gets deregistered
3641
3367
    cleanup()
3642
3368
 
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
3369
 
3660
3370
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()
 
3371
    main()