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  • Committer: Teddy Hogeborn
  • Date: 2016-03-02 16:45:38 UTC
  • Revision ID: teddy@recompile.se-20160302164538-n9ocll4izthzw1ov
Ignore any error from initramfs-tools' "configure_networking".

* initramfs-tools-script: Wrap call to "configure_networking" with
  "set +e" and "set -e", since configure_networking was not designed
  to run in a "set -e" environment.

Closes: 816513
Thanks: Carlos Alberto Lopez Perez <clopez@igalia.com>
Thanks: Ben Hutchings <ben@decadent.org.uk>

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Lines of Context:
1
 
#!/usr/bin/python3 -b
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
76
 
82
77
import dbus
83
78
import dbus.service
84
 
import gi
85
 
from gi.repository import GLib
 
79
try:
 
80
    import gobject
 
81
except ImportError:
 
82
    from gi.repository import GObject as gobject
 
83
import avahi
86
84
from dbus.mainloop.glib import DBusGMainLoop
87
85
import ctypes
88
86
import ctypes.util
89
87
import xml.dom.minidom
90
88
import inspect
91
89
 
92
 
if sys.version_info.major == 2:
93
 
    __metaclass__ = type
94
 
 
95
 
# Show warnings by default
96
 
if not sys.warnoptions:
97
 
    import warnings
98
 
    warnings.simplefilter("default")
99
 
 
100
 
# Try to find the value of SO_BINDTODEVICE:
101
90
try:
102
 
    # This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
103
 
    # newer, and it is also the most natural place for it:
104
91
    SO_BINDTODEVICE = socket.SO_BINDTODEVICE
105
92
except AttributeError:
106
93
    try:
107
 
        # This is where SO_BINDTODEVICE was up to and including Python
108
 
        # 2.6, and also 3.2:
109
94
        from IN import SO_BINDTODEVICE
110
95
    except ImportError:
111
 
        # In Python 2.7 it seems to have been removed entirely.
112
 
        # Try running the C preprocessor:
113
 
        try:
114
 
            cc = subprocess.Popen(["cc", "--language=c", "-E",
115
 
                                   "/dev/stdin"],
116
 
                                  stdin=subprocess.PIPE,
117
 
                                  stdout=subprocess.PIPE)
118
 
            stdout = cc.communicate(
119
 
                "#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
120
 
            SO_BINDTODEVICE = int(stdout.splitlines()[-1])
121
 
        except (OSError, ValueError, IndexError):
122
 
            # No value found
123
 
            SO_BINDTODEVICE = None
 
96
        SO_BINDTODEVICE = None
124
97
 
125
98
if sys.version_info.major == 2:
126
99
    str = unicode
127
100
 
128
 
if sys.version_info < (3, 2):
129
 
    configparser.Configparser = configparser.SafeConfigParser
130
 
 
131
 
version = "1.8.9"
 
101
version = "1.7.3"
132
102
stored_state_file = "clients.pickle"
133
103
 
134
104
logger = logging.getLogger()
135
 
logging.captureWarnings(True)   # Show warnings via the logging system
136
105
syslogger = None
137
106
 
138
107
try:
139
108
    if_nametoindex = ctypes.cdll.LoadLibrary(
140
109
        ctypes.util.find_library("c")).if_nametoindex
141
110
except (OSError, AttributeError):
142
 
 
 
111
    
143
112
    def if_nametoindex(interface):
144
113
        "Get an interface index the hard way, i.e. using fcntl()"
145
114
        SIOCGIFINDEX = 0x8933  # From /usr/include/linux/sockios.h
150
119
        return interface_index
151
120
 
152
121
 
153
 
def copy_function(func):
154
 
    """Make a copy of a function"""
155
 
    if sys.version_info.major == 2:
156
 
        return types.FunctionType(func.func_code,
157
 
                                  func.func_globals,
158
 
                                  func.func_name,
159
 
                                  func.func_defaults,
160
 
                                  func.func_closure)
161
 
    else:
162
 
        return types.FunctionType(func.__code__,
163
 
                                  func.__globals__,
164
 
                                  func.__name__,
165
 
                                  func.__defaults__,
166
 
                                  func.__closure__)
167
 
 
168
 
 
169
122
def initlogger(debug, level=logging.WARNING):
170
123
    """init logger and add loglevel"""
171
 
 
 
124
    
172
125
    global syslogger
173
126
    syslogger = (logging.handlers.SysLogHandler(
174
 
        facility=logging.handlers.SysLogHandler.LOG_DAEMON,
175
 
        address="/dev/log"))
 
127
        facility = logging.handlers.SysLogHandler.LOG_DAEMON,
 
128
        address = "/dev/log"))
176
129
    syslogger.setFormatter(logging.Formatter
177
130
                           ('Mandos [%(process)d]: %(levelname)s:'
178
131
                            ' %(message)s'))
179
132
    logger.addHandler(syslogger)
180
 
 
 
133
    
181
134
    if debug:
182
135
        console = logging.StreamHandler()
183
136
        console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
193
146
    pass
194
147
 
195
148
 
196
 
class PGPEngine:
 
149
class PGPEngine(object):
197
150
    """A simple class for OpenPGP symmetric encryption & decryption"""
198
 
 
 
151
    
199
152
    def __init__(self):
200
153
        self.tempdir = tempfile.mkdtemp(prefix="mandos-")
201
154
        self.gpg = "gpg"
202
155
        try:
203
156
            output = subprocess.check_output(["gpgconf"])
204
157
            for line in output.splitlines():
205
 
                name, text, path = line.split(b":")
206
 
                if name == b"gpg":
 
158
                name, text, path = line.split(":")
 
159
                if name == "gpg":
207
160
                    self.gpg = path
208
161
                    break
209
162
        except OSError as e:
212
165
        self.gnupgargs = ['--batch',
213
166
                          '--homedir', self.tempdir,
214
167
                          '--force-mdc',
215
 
                          '--quiet']
216
 
        # Only GPG version 1 has the --no-use-agent option.
217
 
        if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
218
 
            self.gnupgargs.append("--no-use-agent")
219
 
 
 
168
                          '--quiet',
 
169
                          '--no-use-agent']
 
170
    
220
171
    def __enter__(self):
221
172
        return self
222
 
 
 
173
    
223
174
    def __exit__(self, exc_type, exc_value, traceback):
224
175
        self._cleanup()
225
176
        return False
226
 
 
 
177
    
227
178
    def __del__(self):
228
179
        self._cleanup()
229
 
 
 
180
    
230
181
    def _cleanup(self):
231
182
        if self.tempdir is not None:
232
183
            # Delete contents of tempdir
233
184
            for root, dirs, files in os.walk(self.tempdir,
234
 
                                             topdown=False):
 
185
                                             topdown = False):
235
186
                for filename in files:
236
187
                    os.remove(os.path.join(root, filename))
237
188
                for dirname in dirs:
239
190
            # Remove tempdir
240
191
            os.rmdir(self.tempdir)
241
192
            self.tempdir = None
242
 
 
 
193
    
243
194
    def password_encode(self, password):
244
195
        # Passphrase can not be empty and can not contain newlines or
245
196
        # NUL bytes.  So we prefix it and hex encode it.
250
201
                       .replace(b"\n", b"\\n")
251
202
                       .replace(b"\0", b"\\x00"))
252
203
        return encoded
253
 
 
 
204
    
254
205
    def encrypt(self, data, password):
255
206
        passphrase = self.password_encode(password)
256
207
        with tempfile.NamedTemporaryFile(
261
212
                                     '--passphrase-file',
262
213
                                     passfile.name]
263
214
                                    + self.gnupgargs,
264
 
                                    stdin=subprocess.PIPE,
265
 
                                    stdout=subprocess.PIPE,
266
 
                                    stderr=subprocess.PIPE)
267
 
            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)
268
219
        if proc.returncode != 0:
269
220
            raise PGPError(err)
270
221
        return ciphertext
271
 
 
 
222
    
272
223
    def decrypt(self, data, password):
273
224
        passphrase = self.password_encode(password)
274
225
        with tempfile.NamedTemporaryFile(
275
 
                dir=self.tempdir) as passfile:
 
226
                dir = self.tempdir) as passfile:
276
227
            passfile.write(passphrase)
277
228
            passfile.flush()
278
229
            proc = subprocess.Popen([self.gpg, '--decrypt',
279
230
                                     '--passphrase-file',
280
231
                                     passfile.name]
281
232
                                    + self.gnupgargs,
282
 
                                    stdin=subprocess.PIPE,
283
 
                                    stdout=subprocess.PIPE,
284
 
                                    stderr=subprocess.PIPE)
285
 
            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)
286
237
        if proc.returncode != 0:
287
238
            raise PGPError(err)
288
239
        return decrypted_plaintext
289
240
 
290
241
 
291
 
# Pretend that we have an Avahi module
292
 
class avahi:
293
 
    """This isn't so much a class as it is a module-like namespace."""
294
 
    IF_UNSPEC = -1               # avahi-common/address.h
295
 
    PROTO_UNSPEC = -1            # avahi-common/address.h
296
 
    PROTO_INET = 0               # avahi-common/address.h
297
 
    PROTO_INET6 = 1              # avahi-common/address.h
298
 
    DBUS_NAME = "org.freedesktop.Avahi"
299
 
    DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
300
 
    DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
301
 
    DBUS_PATH_SERVER = "/"
302
 
 
303
 
    @staticmethod
304
 
    def string_array_to_txt_array(t):
305
 
        return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
306
 
                           for s in t), signature="ay")
307
 
    ENTRY_GROUP_ESTABLISHED = 2  # avahi-common/defs.h
308
 
    ENTRY_GROUP_COLLISION = 3    # avahi-common/defs.h
309
 
    ENTRY_GROUP_FAILURE = 4      # avahi-common/defs.h
310
 
    SERVER_INVALID = 0           # avahi-common/defs.h
311
 
    SERVER_REGISTERING = 1       # avahi-common/defs.h
312
 
    SERVER_RUNNING = 2           # avahi-common/defs.h
313
 
    SERVER_COLLISION = 3         # avahi-common/defs.h
314
 
    SERVER_FAILURE = 4           # avahi-common/defs.h
315
 
 
316
 
 
317
242
class AvahiError(Exception):
318
243
    def __init__(self, value, *args, **kwargs):
319
244
        self.value = value
329
254
    pass
330
255
 
331
256
 
332
 
class AvahiService:
 
257
class AvahiService(object):
333
258
    """An Avahi (Zeroconf) service.
334
 
 
 
259
    
335
260
    Attributes:
336
261
    interface: integer; avahi.IF_UNSPEC or an interface index.
337
262
               Used to optionally bind to the specified interface.
349
274
    server: D-Bus Server
350
275
    bus: dbus.SystemBus()
351
276
    """
352
 
 
 
277
    
353
278
    def __init__(self,
354
 
                 interface=avahi.IF_UNSPEC,
355
 
                 name=None,
356
 
                 servicetype=None,
357
 
                 port=None,
358
 
                 TXT=None,
359
 
                 domain="",
360
 
                 host="",
361
 
                 max_renames=32768,
362
 
                 protocol=avahi.PROTO_UNSPEC,
363
 
                 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):
364
289
        self.interface = interface
365
290
        self.name = name
366
291
        self.type = servicetype
375
300
        self.server = None
376
301
        self.bus = bus
377
302
        self.entry_group_state_changed_match = None
378
 
 
 
303
    
379
304
    def rename(self, remove=True):
380
305
        """Derived from the Avahi example code"""
381
306
        if self.rename_count >= self.max_renames:
401
326
                logger.critical("D-Bus Exception", exc_info=error)
402
327
                self.cleanup()
403
328
                os._exit(1)
404
 
 
 
329
    
405
330
    def remove(self):
406
331
        """Derived from the Avahi example code"""
407
332
        if self.entry_group_state_changed_match is not None:
409
334
            self.entry_group_state_changed_match = None
410
335
        if self.group is not None:
411
336
            self.group.Reset()
412
 
 
 
337
    
413
338
    def add(self):
414
339
        """Derived from the Avahi example code"""
415
340
        self.remove()
432
357
            dbus.UInt16(self.port),
433
358
            avahi.string_array_to_txt_array(self.TXT))
434
359
        self.group.Commit()
435
 
 
 
360
    
436
361
    def entry_group_state_changed(self, state, error):
437
362
        """Derived from the Avahi example code"""
438
363
        logger.debug("Avahi entry group state change: %i", state)
439
 
 
 
364
        
440
365
        if state == avahi.ENTRY_GROUP_ESTABLISHED:
441
366
            logger.debug("Zeroconf service established.")
442
367
        elif state == avahi.ENTRY_GROUP_COLLISION:
446
371
            logger.critical("Avahi: Error in group state changed %s",
447
372
                            str(error))
448
373
            raise AvahiGroupError("State changed: {!s}".format(error))
449
 
 
 
374
    
450
375
    def cleanup(self):
451
376
        """Derived from the Avahi example code"""
452
377
        if self.group is not None:
457
382
                pass
458
383
            self.group = None
459
384
        self.remove()
460
 
 
 
385
    
461
386
    def server_state_changed(self, state, error=None):
462
387
        """Derived from the Avahi example code"""
463
388
        logger.debug("Avahi server state change: %i", state)
492
417
                logger.debug("Unknown state: %r", state)
493
418
            else:
494
419
                logger.debug("Unknown state: %r: %r", state, error)
495
 
 
 
420
    
496
421
    def activate(self):
497
422
        """Derived from the Avahi example code"""
498
423
        if self.server is None:
509
434
class AvahiServiceToSyslog(AvahiService):
510
435
    def rename(self, *args, **kwargs):
511
436
        """Add the new name to the syslog messages"""
512
 
        ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
 
437
        ret = AvahiService.rename(self, *args, **kwargs)
513
438
        syslogger.setFormatter(logging.Formatter(
514
439
            'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
515
440
            .format(self.name)))
516
441
        return ret
517
442
 
518
 
 
519
443
# Pretend that we have a GnuTLS module
520
 
class gnutls:
521
 
    """This isn't so much a class as it is a module-like namespace."""
522
 
 
523
 
    library = ctypes.util.find_library("gnutls")
524
 
    if library is None:
525
 
        library = ctypes.util.find_library("gnutls-deb0")
526
 
    _library = ctypes.cdll.LoadLibrary(library)
527
 
    del library
528
 
 
 
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
    
529
459
    # Unless otherwise indicated, the constants and types below are
530
460
    # all from the gnutls/gnutls.h C header file.
531
 
 
 
461
    
532
462
    # Constants
533
463
    E_SUCCESS = 0
534
464
    E_INTERRUPTED = -52
535
465
    E_AGAIN = -28
536
466
    CRT_OPENPGP = 2
537
 
    CRT_RAWPK = 3
538
467
    CLIENT = 2
539
468
    SHUT_RDWR = 0
540
469
    CRD_CERTIFICATE = 1
541
470
    E_NO_CERTIFICATE_FOUND = -49
542
 
    X509_FMT_DER = 0
543
 
    NO_TICKETS = 1<<10
544
 
    ENABLE_RAWPK = 1<<18
545
 
    CTYPE_PEERS = 3
546
 
    KEYID_USE_SHA256 = 1        # gnutls/x509.h
547
471
    OPENPGP_FMT_RAW = 0         # gnutls/openpgp.h
548
 
 
 
472
    
549
473
    # Types
550
474
    class session_int(ctypes.Structure):
551
475
        _fields_ = []
552
476
    session_t = ctypes.POINTER(session_int)
553
 
 
554
477
    class certificate_credentials_st(ctypes.Structure):
555
478
        _fields_ = []
556
479
    certificate_credentials_t = ctypes.POINTER(
557
480
        certificate_credentials_st)
558
481
    certificate_type_t = ctypes.c_int
559
 
 
560
482
    class datum_t(ctypes.Structure):
561
483
        _fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
562
484
                    ('size', ctypes.c_uint)]
563
 
 
564
485
    class openpgp_crt_int(ctypes.Structure):
565
486
        _fields_ = []
566
487
    openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
567
 
    openpgp_crt_fmt_t = ctypes.c_int  # gnutls/openpgp.h
 
488
    openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
568
489
    log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
569
 
    credentials_type_t = ctypes.c_int
 
490
    credentials_type_t = ctypes.c_int # 
570
491
    transport_ptr_t = ctypes.c_void_p
571
492
    close_request_t = ctypes.c_int
572
 
 
 
493
    
573
494
    # Exceptions
574
495
    class Error(Exception):
575
 
        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=()):
576
501
            # Default usage is by a message string, but if a return
577
502
            # code is passed, convert it to a string with
578
503
            # gnutls.strerror()
579
504
            self.code = code
580
505
            if message is None and code is not None:
581
 
                message = gnutls.strerror(code)
582
 
            return super(gnutls.Error, self).__init__(
 
506
                message = GnuTLS.strerror(code)
 
507
            return super(GnuTLS.Error, self).__init__(
583
508
                message, *args)
584
 
 
 
509
    
585
510
    class CertificateSecurityError(Error):
586
511
        pass
587
 
 
 
512
    
588
513
    # Classes
589
 
    class Credentials:
 
514
    class Credentials(object):
590
515
        def __init__(self):
591
516
            self._c_object = gnutls.certificate_credentials_t()
592
517
            gnutls.certificate_allocate_credentials(
593
518
                ctypes.byref(self._c_object))
594
519
            self.type = gnutls.CRD_CERTIFICATE
595
 
 
 
520
        
596
521
        def __del__(self):
597
522
            gnutls.certificate_free_credentials(self._c_object)
598
 
 
599
 
    class ClientSession:
600
 
        def __init__(self, socket, credentials=None):
 
523
    
 
524
    class ClientSession(object):
 
525
        def __init__(self, socket, credentials = None):
601
526
            self._c_object = gnutls.session_t()
602
 
            gnutls_flags = gnutls.CLIENT
603
 
            if gnutls.check_version(b"3.5.6"):
604
 
                gnutls_flags |= gnutls.NO_TICKETS
605
 
            if gnutls.has_rawpk:
606
 
                gnutls_flags |= gnutls.ENABLE_RAWPK
607
 
            gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
608
 
            del gnutls_flags
 
527
            gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
609
528
            gnutls.set_default_priority(self._c_object)
610
529
            gnutls.transport_set_ptr(self._c_object, socket.fileno())
611
530
            gnutls.handshake_set_private_extensions(self._c_object,
617
536
                                   ctypes.cast(credentials._c_object,
618
537
                                               ctypes.c_void_p))
619
538
            self.credentials = credentials
620
 
 
 
539
        
621
540
        def __del__(self):
622
541
            gnutls.deinit(self._c_object)
623
 
 
 
542
        
624
543
        def handshake(self):
625
544
            return gnutls.handshake(self._c_object)
626
 
 
 
545
        
627
546
        def send(self, data):
628
547
            data = bytes(data)
629
548
            data_len = len(data)
631
550
                data_len -= gnutls.record_send(self._c_object,
632
551
                                               data[-data_len:],
633
552
                                               data_len)
634
 
 
 
553
        
635
554
        def bye(self):
636
555
            return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
637
 
 
 
556
    
638
557
    # Error handling functions
639
558
    def _error_code(result):
640
559
        """A function to raise exceptions on errors, suitable
642
561
        if result >= 0:
643
562
            return result
644
563
        if result == gnutls.E_NO_CERTIFICATE_FOUND:
645
 
            raise gnutls.CertificateSecurityError(code=result)
646
 
        raise gnutls.Error(code=result)
647
 
 
 
564
            raise gnutls.CertificateSecurityError(code = result)
 
565
        raise gnutls.Error(code = result)
 
566
    
648
567
    def _retry_on_error(result, func, arguments):
649
568
        """A function to retry on some errors, suitable
650
569
        for the 'errcheck' attribute on ctypes functions"""
653
572
                return _error_code(result)
654
573
            result = func(*arguments)
655
574
        return result
656
 
 
 
575
    
657
576
    # Unless otherwise indicated, the function declarations below are
658
577
    # all from the gnutls/gnutls.h C header file.
659
 
 
 
578
    
660
579
    # Functions
661
580
    priority_set_direct = _library.gnutls_priority_set_direct
662
581
    priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
663
582
                                    ctypes.POINTER(ctypes.c_char_p)]
664
583
    priority_set_direct.restype = _error_code
665
 
 
 
584
    
666
585
    init = _library.gnutls_init
667
586
    init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
668
587
    init.restype = _error_code
669
 
 
 
588
    
670
589
    set_default_priority = _library.gnutls_set_default_priority
671
590
    set_default_priority.argtypes = [session_t]
672
591
    set_default_priority.restype = _error_code
673
 
 
 
592
    
674
593
    record_send = _library.gnutls_record_send
675
594
    record_send.argtypes = [session_t, ctypes.c_void_p,
676
595
                            ctypes.c_size_t]
677
596
    record_send.restype = ctypes.c_ssize_t
678
597
    record_send.errcheck = _retry_on_error
679
 
 
 
598
    
680
599
    certificate_allocate_credentials = (
681
600
        _library.gnutls_certificate_allocate_credentials)
682
601
    certificate_allocate_credentials.argtypes = [
683
602
        ctypes.POINTER(certificate_credentials_t)]
684
603
    certificate_allocate_credentials.restype = _error_code
685
 
 
 
604
    
686
605
    certificate_free_credentials = (
687
606
        _library.gnutls_certificate_free_credentials)
688
 
    certificate_free_credentials.argtypes = [
689
 
        certificate_credentials_t]
 
607
    certificate_free_credentials.argtypes = [certificate_credentials_t]
690
608
    certificate_free_credentials.restype = None
691
 
 
 
609
    
692
610
    handshake_set_private_extensions = (
693
611
        _library.gnutls_handshake_set_private_extensions)
694
612
    handshake_set_private_extensions.argtypes = [session_t,
695
613
                                                 ctypes.c_int]
696
614
    handshake_set_private_extensions.restype = None
697
 
 
 
615
    
698
616
    credentials_set = _library.gnutls_credentials_set
699
617
    credentials_set.argtypes = [session_t, credentials_type_t,
700
618
                                ctypes.c_void_p]
701
619
    credentials_set.restype = _error_code
702
 
 
 
620
    
703
621
    strerror = _library.gnutls_strerror
704
622
    strerror.argtypes = [ctypes.c_int]
705
623
    strerror.restype = ctypes.c_char_p
706
 
 
 
624
    
707
625
    certificate_type_get = _library.gnutls_certificate_type_get
708
626
    certificate_type_get.argtypes = [session_t]
709
627
    certificate_type_get.restype = _error_code
710
 
 
 
628
    
711
629
    certificate_get_peers = _library.gnutls_certificate_get_peers
712
630
    certificate_get_peers.argtypes = [session_t,
713
631
                                      ctypes.POINTER(ctypes.c_uint)]
714
632
    certificate_get_peers.restype = ctypes.POINTER(datum_t)
715
 
 
 
633
    
716
634
    global_set_log_level = _library.gnutls_global_set_log_level
717
635
    global_set_log_level.argtypes = [ctypes.c_int]
718
636
    global_set_log_level.restype = None
719
 
 
 
637
    
720
638
    global_set_log_function = _library.gnutls_global_set_log_function
721
639
    global_set_log_function.argtypes = [log_func]
722
640
    global_set_log_function.restype = None
723
 
 
 
641
    
724
642
    deinit = _library.gnutls_deinit
725
643
    deinit.argtypes = [session_t]
726
644
    deinit.restype = None
727
 
 
 
645
    
728
646
    handshake = _library.gnutls_handshake
729
647
    handshake.argtypes = [session_t]
730
648
    handshake.restype = _error_code
731
649
    handshake.errcheck = _retry_on_error
732
 
 
 
650
    
733
651
    transport_set_ptr = _library.gnutls_transport_set_ptr
734
652
    transport_set_ptr.argtypes = [session_t, transport_ptr_t]
735
653
    transport_set_ptr.restype = None
736
 
 
 
654
    
737
655
    bye = _library.gnutls_bye
738
656
    bye.argtypes = [session_t, close_request_t]
739
657
    bye.restype = _error_code
740
658
    bye.errcheck = _retry_on_error
741
 
 
 
659
    
742
660
    check_version = _library.gnutls_check_version
743
661
    check_version.argtypes = [ctypes.c_char_p]
744
662
    check_version.restype = ctypes.c_char_p
745
 
 
746
 
    _need_version = b"3.3.0"
747
 
    if check_version(_need_version) is None:
748
 
        raise self.Error("Needs GnuTLS {} or later"
749
 
                         .format(_need_version))
750
 
 
751
 
    _tls_rawpk_version = b"3.6.6"
752
 
    has_rawpk = bool(check_version(_tls_rawpk_version))
753
 
 
754
 
    if has_rawpk:
755
 
        # Types
756
 
        class pubkey_st(ctypes.Structure):
757
 
            _fields = []
758
 
        pubkey_t = ctypes.POINTER(pubkey_st)
759
 
 
760
 
        x509_crt_fmt_t = ctypes.c_int
761
 
 
762
 
        # All the function declarations below are from gnutls/abstract.h
763
 
        pubkey_init = _library.gnutls_pubkey_init
764
 
        pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
765
 
        pubkey_init.restype = _error_code
766
 
 
767
 
        pubkey_import = _library.gnutls_pubkey_import
768
 
        pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
769
 
                                  x509_crt_fmt_t]
770
 
        pubkey_import.restype = _error_code
771
 
 
772
 
        pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
773
 
        pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
774
 
                                      ctypes.POINTER(ctypes.c_ubyte),
775
 
                                      ctypes.POINTER(ctypes.c_size_t)]
776
 
        pubkey_get_key_id.restype = _error_code
777
 
 
778
 
        pubkey_deinit = _library.gnutls_pubkey_deinit
779
 
        pubkey_deinit.argtypes = [pubkey_t]
780
 
        pubkey_deinit.restype = None
781
 
    else:
782
 
        # All the function declarations below are from gnutls/openpgp.h
783
 
 
784
 
        openpgp_crt_init = _library.gnutls_openpgp_crt_init
785
 
        openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
786
 
        openpgp_crt_init.restype = _error_code
787
 
 
788
 
        openpgp_crt_import = _library.gnutls_openpgp_crt_import
789
 
        openpgp_crt_import.argtypes = [openpgp_crt_t,
790
 
                                       ctypes.POINTER(datum_t),
791
 
                                       openpgp_crt_fmt_t]
792
 
        openpgp_crt_import.restype = _error_code
793
 
 
794
 
        openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
795
 
        openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
796
 
                                            ctypes.POINTER(ctypes.c_uint)]
797
 
        openpgp_crt_verify_self.restype = _error_code
798
 
 
799
 
        openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
800
 
        openpgp_crt_deinit.argtypes = [openpgp_crt_t]
801
 
        openpgp_crt_deinit.restype = None
802
 
 
803
 
        openpgp_crt_get_fingerprint = (
804
 
            _library.gnutls_openpgp_crt_get_fingerprint)
805
 
        openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
806
 
                                                ctypes.c_void_p,
807
 
                                                ctypes.POINTER(
808
 
                                                    ctypes.c_size_t)]
809
 
        openpgp_crt_get_fingerprint.restype = _error_code
810
 
 
811
 
    if check_version(b"3.6.4"):
812
 
        certificate_type_get2 = _library.gnutls_certificate_type_get2
813
 
        certificate_type_get2.argtypes = [session_t, ctypes.c_int]
814
 
        certificate_type_get2.restype = _error_code
815
 
 
 
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
    
816
693
    # Remove non-public functions
817
694
    del _error_code, _retry_on_error
818
 
 
 
695
# Create the global "gnutls" object, simulating a module
 
696
gnutls = GnuTLS()
819
697
 
820
698
def call_pipe(connection,       # : multiprocessing.Connection
821
699
              func, *args, **kwargs):
822
700
    """This function is meant to be called by multiprocessing.Process
823
 
 
 
701
    
824
702
    This function runs func(*args, **kwargs), and writes the resulting
825
703
    return value on the provided multiprocessing.Connection.
826
704
    """
827
705
    connection.send(func(*args, **kwargs))
828
706
    connection.close()
829
707
 
830
 
 
831
 
class Client:
 
708
class Client(object):
832
709
    """A representation of a client host served by this server.
833
 
 
 
710
    
834
711
    Attributes:
835
712
    approved:   bool(); 'None' if not yet approved/disapproved
836
713
    approval_delay: datetime.timedelta(); Time to wait for approval
837
714
    approval_duration: datetime.timedelta(); Duration of one approval
838
 
    checker: multiprocessing.Process(); a running checker process used
839
 
             to see if the client lives. 'None' if no process is
840
 
             running.
841
 
    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
842
719
    checker_command: string; External command which is run to check
843
720
                     if client lives.  %() expansions are done at
844
721
                     runtime with vars(self) as dict, so that for
845
722
                     instance %(name)s can be used in the command.
846
 
    checker_initiator_tag: a GLib event source tag, or None
 
723
    checker_initiator_tag: a gobject event source tag, or None
847
724
    created:    datetime.datetime(); (UTC) object creation
848
725
    client_structure: Object describing what attributes a client has
849
726
                      and is used for storing the client at exit
850
727
    current_checker_command: string; current running checker_command
851
 
    disable_initiator_tag: a GLib event source tag, or None
 
728
    disable_initiator_tag: a gobject event source tag, or None
852
729
    enabled:    bool()
853
730
    fingerprint: string (40 or 32 hexadecimal digits); used to
854
 
                 uniquely identify an OpenPGP client
855
 
    key_id: string (64 hexadecimal digits); used to uniquely identify
856
 
            a client using raw public keys
 
731
                 uniquely identify the client
857
732
    host:       string; available for use by the checker command
858
733
    interval:   datetime.timedelta(); How often to start a new checker
859
734
    last_approval_request: datetime.datetime(); (UTC) or None
875
750
                disabled, or None
876
751
    server_settings: The server_settings dict from main()
877
752
    """
878
 
 
 
753
    
879
754
    runtime_expansions = ("approval_delay", "approval_duration",
880
 
                          "created", "enabled", "expires", "key_id",
 
755
                          "created", "enabled", "expires",
881
756
                          "fingerprint", "host", "interval",
882
757
                          "last_approval_request", "last_checked_ok",
883
758
                          "last_enabled", "name", "timeout")
892
767
        "approved_by_default": "True",
893
768
        "enabled": "True",
894
769
    }
895
 
 
 
770
    
896
771
    @staticmethod
897
772
    def config_parser(config):
898
773
        """Construct a new dict of client settings of this form:
905
780
        for client_name in config.sections():
906
781
            section = dict(config.items(client_name))
907
782
            client = settings[client_name] = {}
908
 
 
 
783
            
909
784
            client["host"] = section["host"]
910
785
            # Reformat values from string types to Python types
911
786
            client["approved_by_default"] = config.getboolean(
912
787
                client_name, "approved_by_default")
913
788
            client["enabled"] = config.getboolean(client_name,
914
789
                                                  "enabled")
915
 
 
916
 
            # Uppercase and remove spaces from key_id and fingerprint
917
 
            # for later comparison purposes with return value from the
918
 
            # key_id() and fingerprint() functions
919
 
            client["key_id"] = (section.get("key_id", "").upper()
920
 
                                .replace(" ", ""))
 
790
            
 
791
            # Uppercase and remove spaces from fingerprint for later
 
792
            # comparison purposes with return value from the
 
793
            # fingerprint() function
921
794
            client["fingerprint"] = (section["fingerprint"].upper()
922
795
                                     .replace(" ", ""))
923
796
            if "secret" in section:
924
 
                client["secret"] = codecs.decode(section["secret"]
925
 
                                                 .encode("utf-8"),
926
 
                                                 "base64")
 
797
                client["secret"] = section["secret"].decode("base64")
927
798
            elif "secfile" in section:
928
799
                with open(os.path.expanduser(os.path.expandvars
929
800
                                             (section["secfile"])),
944
815
            client["last_approval_request"] = None
945
816
            client["last_checked_ok"] = None
946
817
            client["last_checker_status"] = -2
947
 
 
 
818
        
948
819
        return settings
949
 
 
950
 
    def __init__(self, settings, name=None, server_settings=None):
 
820
    
 
821
    def __init__(self, settings, name = None, server_settings=None):
951
822
        self.name = name
952
823
        if server_settings is None:
953
824
            server_settings = {}
955
826
        # adding all client settings
956
827
        for setting, value in settings.items():
957
828
            setattr(self, setting, value)
958
 
 
 
829
        
959
830
        if self.enabled:
960
831
            if not hasattr(self, "last_enabled"):
961
832
                self.last_enabled = datetime.datetime.utcnow()
965
836
        else:
966
837
            self.last_enabled = None
967
838
            self.expires = None
968
 
 
 
839
        
969
840
        logger.debug("Creating client %r", self.name)
970
 
        logger.debug("  Key ID: %s", self.key_id)
971
841
        logger.debug("  Fingerprint: %s", self.fingerprint)
972
842
        self.created = settings.get("created",
973
843
                                    datetime.datetime.utcnow())
974
 
 
 
844
        
975
845
        # attributes specific for this server instance
976
846
        self.checker = None
977
847
        self.checker_initiator_tag = None
983
853
        self.changedstate = multiprocessing_manager.Condition(
984
854
            multiprocessing_manager.Lock())
985
855
        self.client_structure = [attr
986
 
                                 for attr in self.__dict__.keys()
 
856
                                 for attr in self.__dict__.iterkeys()
987
857
                                 if not attr.startswith("_")]
988
858
        self.client_structure.append("client_structure")
989
 
 
 
859
        
990
860
        for name, t in inspect.getmembers(
991
861
                type(self), lambda obj: isinstance(obj, property)):
992
862
            if not name.startswith("_"):
993
863
                self.client_structure.append(name)
994
 
 
 
864
    
995
865
    # Send notice to process children that client state has changed
996
866
    def send_changedstate(self):
997
867
        with self.changedstate:
998
868
            self.changedstate.notify_all()
999
 
 
 
869
    
1000
870
    def enable(self):
1001
871
        """Start this client's checker and timeout hooks"""
1002
872
        if getattr(self, "enabled", False):
1007
877
        self.last_enabled = datetime.datetime.utcnow()
1008
878
        self.init_checker()
1009
879
        self.send_changedstate()
1010
 
 
 
880
    
1011
881
    def disable(self, quiet=True):
1012
882
        """Disable this client."""
1013
883
        if not getattr(self, "enabled", False):
1015
885
        if not quiet:
1016
886
            logger.info("Disabling client %s", self.name)
1017
887
        if getattr(self, "disable_initiator_tag", None) is not None:
1018
 
            GLib.source_remove(self.disable_initiator_tag)
 
888
            gobject.source_remove(self.disable_initiator_tag)
1019
889
            self.disable_initiator_tag = None
1020
890
        self.expires = None
1021
891
        if getattr(self, "checker_initiator_tag", None) is not None:
1022
 
            GLib.source_remove(self.checker_initiator_tag)
 
892
            gobject.source_remove(self.checker_initiator_tag)
1023
893
            self.checker_initiator_tag = None
1024
894
        self.stop_checker()
1025
895
        self.enabled = False
1026
896
        if not quiet:
1027
897
            self.send_changedstate()
1028
 
        # 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
1029
899
        return False
1030
 
 
 
900
    
1031
901
    def __del__(self):
1032
902
        self.disable()
1033
 
 
 
903
    
1034
904
    def init_checker(self):
1035
905
        # Schedule a new checker to be started an 'interval' from now,
1036
906
        # and every interval from then on.
1037
907
        if self.checker_initiator_tag is not None:
1038
 
            GLib.source_remove(self.checker_initiator_tag)
1039
 
        self.checker_initiator_tag = GLib.timeout_add(
 
908
            gobject.source_remove(self.checker_initiator_tag)
 
909
        self.checker_initiator_tag = gobject.timeout_add(
1040
910
            int(self.interval.total_seconds() * 1000),
1041
911
            self.start_checker)
1042
912
        # Schedule a disable() when 'timeout' has passed
1043
913
        if self.disable_initiator_tag is not None:
1044
 
            GLib.source_remove(self.disable_initiator_tag)
1045
 
        self.disable_initiator_tag = GLib.timeout_add(
 
914
            gobject.source_remove(self.disable_initiator_tag)
 
915
        self.disable_initiator_tag = gobject.timeout_add(
1046
916
            int(self.timeout.total_seconds() * 1000), self.disable)
1047
917
        # Also start a new checker *right now*.
1048
918
        self.start_checker()
1049
 
 
 
919
    
1050
920
    def checker_callback(self, source, condition, connection,
1051
921
                         command):
1052
922
        """The checker has completed, so take appropriate actions."""
 
923
        self.checker_callback_tag = None
 
924
        self.checker = None
1053
925
        # Read return code from connection (see call_pipe)
1054
926
        returncode = connection.recv()
1055
927
        connection.close()
1056
 
        if self.checker is not None:
1057
 
            self.checker.join()
1058
 
        self.checker_callback_tag = None
1059
 
        self.checker = None
1060
 
 
 
928
        
1061
929
        if returncode >= 0:
1062
930
            self.last_checker_status = returncode
1063
931
            self.last_checker_signal = None
1073
941
            logger.warning("Checker for %(name)s crashed?",
1074
942
                           vars(self))
1075
943
        return False
1076
 
 
 
944
    
1077
945
    def checked_ok(self):
1078
946
        """Assert that the client has been seen, alive and well."""
1079
947
        self.last_checked_ok = datetime.datetime.utcnow()
1080
948
        self.last_checker_status = 0
1081
949
        self.last_checker_signal = None
1082
950
        self.bump_timeout()
1083
 
 
 
951
    
1084
952
    def bump_timeout(self, timeout=None):
1085
953
        """Bump up the timeout for this client."""
1086
954
        if timeout is None:
1087
955
            timeout = self.timeout
1088
956
        if self.disable_initiator_tag is not None:
1089
 
            GLib.source_remove(self.disable_initiator_tag)
 
957
            gobject.source_remove(self.disable_initiator_tag)
1090
958
            self.disable_initiator_tag = None
1091
959
        if getattr(self, "enabled", False):
1092
 
            self.disable_initiator_tag = GLib.timeout_add(
 
960
            self.disable_initiator_tag = gobject.timeout_add(
1093
961
                int(timeout.total_seconds() * 1000), self.disable)
1094
962
            self.expires = datetime.datetime.utcnow() + timeout
1095
 
 
 
963
    
1096
964
    def need_approval(self):
1097
965
        self.last_approval_request = datetime.datetime.utcnow()
1098
 
 
 
966
    
1099
967
    def start_checker(self):
1100
968
        """Start a new checker subprocess if one is not running.
1101
 
 
 
969
        
1102
970
        If a checker already exists, leave it running and do
1103
971
        nothing."""
1104
972
        # The reason for not killing a running checker is that if we
1109
977
        # checkers alone, the checker would have to take more time
1110
978
        # than 'timeout' for the client to be disabled, which is as it
1111
979
        # should be.
1112
 
 
 
980
        
1113
981
        if self.checker is not None and not self.checker.is_alive():
1114
982
            logger.warning("Checker was not alive; joining")
1115
983
            self.checker.join()
1119
987
            # Escape attributes for the shell
1120
988
            escaped_attrs = {
1121
989
                attr: re.escape(str(getattr(self, attr)))
1122
 
                for attr in self.runtime_expansions}
 
990
                for attr in self.runtime_expansions }
1123
991
            try:
1124
992
                command = self.checker_command % escaped_attrs
1125
993
            except TypeError as error:
1137
1005
            # The exception is when not debugging but nevertheless
1138
1006
            # running in the foreground; use the previously
1139
1007
            # created wnull.
1140
 
            popen_args = {"close_fds": True,
1141
 
                          "shell": True,
1142
 
                          "cwd": "/"}
 
1008
            popen_args = { "close_fds": True,
 
1009
                           "shell": True,
 
1010
                           "cwd": "/" }
1143
1011
            if (not self.server_settings["debug"]
1144
1012
                and self.server_settings["foreground"]):
1145
1013
                popen_args.update({"stdout": wnull,
1146
 
                                   "stderr": wnull})
1147
 
            pipe = multiprocessing.Pipe(duplex=False)
 
1014
                                   "stderr": wnull })
 
1015
            pipe = multiprocessing.Pipe(duplex = False)
1148
1016
            self.checker = multiprocessing.Process(
1149
 
                target=call_pipe,
1150
 
                args=(pipe[1], subprocess.call, command),
1151
 
                kwargs=popen_args)
 
1017
                target = call_pipe,
 
1018
                args = (pipe[1], subprocess.call, command),
 
1019
                kwargs = popen_args)
1152
1020
            self.checker.start()
1153
 
            self.checker_callback_tag = GLib.io_add_watch(
1154
 
                GLib.IOChannel.unix_new(pipe[0].fileno()),
1155
 
                GLib.PRIORITY_DEFAULT, GLib.IO_IN,
 
1021
            self.checker_callback_tag = gobject.io_add_watch(
 
1022
                pipe[0].fileno(), gobject.IO_IN,
1156
1023
                self.checker_callback, pipe[0], command)
1157
 
        # Re-run this periodically if run by GLib.timeout_add
 
1024
        # Re-run this periodically if run by gobject.timeout_add
1158
1025
        return True
1159
 
 
 
1026
    
1160
1027
    def stop_checker(self):
1161
1028
        """Force the checker process, if any, to stop."""
1162
1029
        if self.checker_callback_tag:
1163
 
            GLib.source_remove(self.checker_callback_tag)
 
1030
            gobject.source_remove(self.checker_callback_tag)
1164
1031
            self.checker_callback_tag = None
1165
1032
        if getattr(self, "checker", None) is None:
1166
1033
            return
1175
1042
                          byte_arrays=False):
1176
1043
    """Decorators for marking methods of a DBusObjectWithProperties to
1177
1044
    become properties on the D-Bus.
1178
 
 
 
1045
    
1179
1046
    The decorated method will be called with no arguments by "Get"
1180
1047
    and with one argument by "Set".
1181
 
 
 
1048
    
1182
1049
    The parameters, where they are supported, are the same as
1183
1050
    dbus.service.method, except there is only "signature", since the
1184
1051
    type from Get() and the type sent to Set() is the same.
1188
1055
    if byte_arrays and signature != "ay":
1189
1056
        raise ValueError("Byte arrays not supported for non-'ay'"
1190
1057
                         " signature {!r}".format(signature))
1191
 
 
 
1058
    
1192
1059
    def decorator(func):
1193
1060
        func._dbus_is_property = True
1194
1061
        func._dbus_interface = dbus_interface
1197
1064
        func._dbus_name = func.__name__
1198
1065
        if func._dbus_name.endswith("_dbus_property"):
1199
1066
            func._dbus_name = func._dbus_name[:-14]
1200
 
        func._dbus_get_args_options = {'byte_arrays': byte_arrays}
 
1067
        func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1201
1068
        return func
1202
 
 
 
1069
    
1203
1070
    return decorator
1204
1071
 
1205
1072
 
1206
1073
def dbus_interface_annotations(dbus_interface):
1207
1074
    """Decorator for marking functions returning interface annotations
1208
 
 
 
1075
    
1209
1076
    Usage:
1210
 
 
 
1077
    
1211
1078
    @dbus_interface_annotations("org.example.Interface")
1212
1079
    def _foo(self):  # Function name does not matter
1213
1080
        return {"org.freedesktop.DBus.Deprecated": "true",
1214
1081
                "org.freedesktop.DBus.Property.EmitsChangedSignal":
1215
1082
                    "false"}
1216
1083
    """
1217
 
 
 
1084
    
1218
1085
    def decorator(func):
1219
1086
        func._dbus_is_interface = True
1220
1087
        func._dbus_interface = dbus_interface
1221
1088
        func._dbus_name = dbus_interface
1222
1089
        return func
1223
 
 
 
1090
    
1224
1091
    return decorator
1225
1092
 
1226
1093
 
1227
1094
def dbus_annotations(annotations):
1228
1095
    """Decorator to annotate D-Bus methods, signals or properties
1229
1096
    Usage:
1230
 
 
 
1097
    
1231
1098
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1232
1099
                       "org.freedesktop.DBus.Property."
1233
1100
                       "EmitsChangedSignal": "false"})
1235
1102
                           access="r")
1236
1103
    def Property_dbus_property(self):
1237
1104
        return dbus.Boolean(False)
1238
 
 
 
1105
    
1239
1106
    See also the DBusObjectWithAnnotations class.
1240
1107
    """
1241
 
 
 
1108
    
1242
1109
    def decorator(func):
1243
1110
        func._dbus_annotations = annotations
1244
1111
        return func
1245
 
 
 
1112
    
1246
1113
    return decorator
1247
1114
 
1248
1115
 
1266
1133
 
1267
1134
class DBusObjectWithAnnotations(dbus.service.Object):
1268
1135
    """A D-Bus object with annotations.
1269
 
 
 
1136
    
1270
1137
    Classes inheriting from this can use the dbus_annotations
1271
1138
    decorator to add annotations to methods or signals.
1272
1139
    """
1273
 
 
 
1140
    
1274
1141
    @staticmethod
1275
1142
    def _is_dbus_thing(thing):
1276
1143
        """Returns a function testing if an attribute is a D-Bus thing
1277
 
 
 
1144
        
1278
1145
        If called like _is_dbus_thing("method") it returns a function
1279
1146
        suitable for use as predicate to inspect.getmembers().
1280
1147
        """
1281
1148
        return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1282
1149
                                   False)
1283
 
 
 
1150
    
1284
1151
    def _get_all_dbus_things(self, thing):
1285
1152
        """Returns a generator of (name, attribute) pairs
1286
1153
        """
1289
1156
                for cls in self.__class__.__mro__
1290
1157
                for name, athing in
1291
1158
                inspect.getmembers(cls, self._is_dbus_thing(thing)))
1292
 
 
 
1159
    
1293
1160
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1294
 
                         out_signature="s",
1295
 
                         path_keyword='object_path',
1296
 
                         connection_keyword='connection')
 
1161
                         out_signature = "s",
 
1162
                         path_keyword = 'object_path',
 
1163
                         connection_keyword = 'connection')
1297
1164
    def Introspect(self, object_path, connection):
1298
1165
        """Overloading of standard D-Bus method.
1299
 
 
 
1166
        
1300
1167
        Inserts annotation tags on methods and signals.
1301
1168
        """
1302
1169
        xmlstring = dbus.service.Object.Introspect(self, object_path,
1303
1170
                                                   connection)
1304
1171
        try:
1305
1172
            document = xml.dom.minidom.parseString(xmlstring)
1306
 
 
 
1173
            
1307
1174
            for if_tag in document.getElementsByTagName("interface"):
1308
1175
                # Add annotation tags
1309
1176
                for typ in ("method", "signal"):
1336
1203
                    if_tag.appendChild(ann_tag)
1337
1204
                # Fix argument name for the Introspect method itself
1338
1205
                if (if_tag.getAttribute("name")
1339
 
                    == dbus.INTROSPECTABLE_IFACE):
 
1206
                                == dbus.INTROSPECTABLE_IFACE):
1340
1207
                    for cn in if_tag.getElementsByTagName("method"):
1341
1208
                        if cn.getAttribute("name") == "Introspect":
1342
1209
                            for arg in cn.getElementsByTagName("arg"):
1355
1222
 
1356
1223
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1357
1224
    """A D-Bus object with properties.
1358
 
 
 
1225
    
1359
1226
    Classes inheriting from this can use the dbus_service_property
1360
1227
    decorator to expose methods as D-Bus properties.  It exposes the
1361
1228
    standard Get(), Set(), and GetAll() methods on the D-Bus.
1362
1229
    """
1363
 
 
 
1230
    
1364
1231
    def _get_dbus_property(self, interface_name, property_name):
1365
1232
        """Returns a bound method if one exists which is a D-Bus
1366
1233
        property with the specified name and interface.
1371
1238
                if (value._dbus_name == property_name
1372
1239
                    and value._dbus_interface == interface_name):
1373
1240
                    return value.__get__(self)
1374
 
 
 
1241
        
1375
1242
        # No such property
1376
1243
        raise DBusPropertyNotFound("{}:{}.{}".format(
1377
1244
            self.dbus_object_path, interface_name, property_name))
1378
 
 
 
1245
    
1379
1246
    @classmethod
1380
1247
    def _get_all_interface_names(cls):
1381
1248
        """Get a sequence of all interfaces supported by an object"""
1384
1251
                                     for x in (inspect.getmro(cls))
1385
1252
                                     for attr in dir(x))
1386
1253
                if name is not None)
1387
 
 
 
1254
    
1388
1255
    @dbus.service.method(dbus.PROPERTIES_IFACE,
1389
1256
                         in_signature="ss",
1390
1257
                         out_signature="v")
1398
1265
        if not hasattr(value, "variant_level"):
1399
1266
            return value
1400
1267
        return type(value)(value, variant_level=value.variant_level+1)
1401
 
 
 
1268
    
1402
1269
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1403
1270
    def Set(self, interface_name, property_name, value):
1404
1271
        """Standard D-Bus property Set() method, see D-Bus standard.
1416
1283
            value = dbus.ByteArray(b''.join(chr(byte)
1417
1284
                                            for byte in value))
1418
1285
        prop(value)
1419
 
 
 
1286
    
1420
1287
    @dbus.service.method(dbus.PROPERTIES_IFACE,
1421
1288
                         in_signature="s",
1422
1289
                         out_signature="a{sv}")
1423
1290
    def GetAll(self, interface_name):
1424
1291
        """Standard D-Bus property GetAll() method, see D-Bus
1425
1292
        standard.
1426
 
 
 
1293
        
1427
1294
        Note: Will not include properties with access="write".
1428
1295
        """
1429
1296
        properties = {}
1440
1307
                properties[name] = value
1441
1308
                continue
1442
1309
            properties[name] = type(value)(
1443
 
                value, variant_level=value.variant_level + 1)
 
1310
                value, variant_level = value.variant_level + 1)
1444
1311
        return dbus.Dictionary(properties, signature="sv")
1445
 
 
 
1312
    
1446
1313
    @dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1447
1314
    def PropertiesChanged(self, interface_name, changed_properties,
1448
1315
                          invalidated_properties):
1450
1317
        standard.
1451
1318
        """
1452
1319
        pass
1453
 
 
 
1320
    
1454
1321
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1455
1322
                         out_signature="s",
1456
1323
                         path_keyword='object_path',
1457
1324
                         connection_keyword='connection')
1458
1325
    def Introspect(self, object_path, connection):
1459
1326
        """Overloading of standard D-Bus method.
1460
 
 
 
1327
        
1461
1328
        Inserts property tags and interface annotation tags.
1462
1329
        """
1463
1330
        xmlstring = DBusObjectWithAnnotations.Introspect(self,
1465
1332
                                                         connection)
1466
1333
        try:
1467
1334
            document = xml.dom.minidom.parseString(xmlstring)
1468
 
 
 
1335
            
1469
1336
            def make_tag(document, name, prop):
1470
1337
                e = document.createElement("property")
1471
1338
                e.setAttribute("name", name)
1472
1339
                e.setAttribute("type", prop._dbus_signature)
1473
1340
                e.setAttribute("access", prop._dbus_access)
1474
1341
                return e
1475
 
 
 
1342
            
1476
1343
            for if_tag in document.getElementsByTagName("interface"):
1477
1344
                # Add property tags
1478
1345
                for tag in (make_tag(document, name, prop)
1520
1387
                         exc_info=error)
1521
1388
        return xmlstring
1522
1389
 
1523
 
 
1524
1390
try:
1525
1391
    dbus.OBJECT_MANAGER_IFACE
1526
1392
except AttributeError:
1527
1393
    dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1528
1394
 
1529
 
 
1530
1395
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1531
1396
    """A D-Bus object with an ObjectManager.
1532
 
 
 
1397
    
1533
1398
    Classes inheriting from this exposes the standard
1534
1399
    GetManagedObjects call and the InterfacesAdded and
1535
1400
    InterfacesRemoved signals on the standard
1536
1401
    "org.freedesktop.DBus.ObjectManager" interface.
1537
 
 
 
1402
    
1538
1403
    Note: No signals are sent automatically; they must be sent
1539
1404
    manually.
1540
1405
    """
1541
1406
    @dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1542
 
                         out_signature="a{oa{sa{sv}}}")
 
1407
                         out_signature = "a{oa{sa{sv}}}")
1543
1408
    def GetManagedObjects(self):
1544
1409
        """This function must be overridden"""
1545
1410
        raise NotImplementedError()
1546
 
 
 
1411
    
1547
1412
    @dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1548
 
                         signature="oa{sa{sv}}")
 
1413
                         signature = "oa{sa{sv}}")
1549
1414
    def InterfacesAdded(self, object_path, interfaces_and_properties):
1550
1415
        pass
1551
 
 
1552
 
    @dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
 
1416
    
 
1417
    @dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1553
1418
    def InterfacesRemoved(self, object_path, interfaces):
1554
1419
        pass
1555
 
 
 
1420
    
1556
1421
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1557
 
                         out_signature="s",
1558
 
                         path_keyword='object_path',
1559
 
                         connection_keyword='connection')
 
1422
                         out_signature = "s",
 
1423
                         path_keyword = 'object_path',
 
1424
                         connection_keyword = 'connection')
1560
1425
    def Introspect(self, object_path, connection):
1561
1426
        """Overloading of standard D-Bus method.
1562
 
 
 
1427
        
1563
1428
        Override return argument name of GetManagedObjects to be
1564
1429
        "objpath_interfaces_and_properties"
1565
1430
        """
1568
1433
                                                         connection)
1569
1434
        try:
1570
1435
            document = xml.dom.minidom.parseString(xmlstring)
1571
 
 
 
1436
            
1572
1437
            for if_tag in document.getElementsByTagName("interface"):
1573
1438
                # Fix argument name for the GetManagedObjects method
1574
1439
                if (if_tag.getAttribute("name")
1575
 
                    == dbus.OBJECT_MANAGER_IFACE):
 
1440
                                == dbus.OBJECT_MANAGER_IFACE):
1576
1441
                    for cn in if_tag.getElementsByTagName("method"):
1577
1442
                        if (cn.getAttribute("name")
1578
1443
                            == "GetManagedObjects"):
1588
1453
        except (AttributeError, xml.dom.DOMException,
1589
1454
                xml.parsers.expat.ExpatError) as error:
1590
1455
            logger.error("Failed to override Introspection method",
1591
 
                         exc_info=error)
 
1456
                         exc_info = error)
1592
1457
        return xmlstring
1593
1458
 
1594
 
 
1595
1459
def datetime_to_dbus(dt, variant_level=0):
1596
1460
    """Convert a UTC datetime.datetime() to a D-Bus type."""
1597
1461
    if dt is None:
1598
 
        return dbus.String("", variant_level=variant_level)
 
1462
        return dbus.String("", variant_level = variant_level)
1599
1463
    return dbus.String(dt.isoformat(), variant_level=variant_level)
1600
1464
 
1601
1465
 
1604
1468
    dbus.service.Object, it will add alternate D-Bus attributes with
1605
1469
    interface names according to the "alt_interface_names" mapping.
1606
1470
    Usage:
1607
 
 
 
1471
    
1608
1472
    @alternate_dbus_interfaces({"org.example.Interface":
1609
1473
                                    "net.example.AlternateInterface"})
1610
1474
    class SampleDBusObject(dbus.service.Object):
1611
1475
        @dbus.service.method("org.example.Interface")
1612
1476
        def SampleDBusMethod():
1613
1477
            pass
1614
 
 
 
1478
    
1615
1479
    The above "SampleDBusMethod" on "SampleDBusObject" will be
1616
1480
    reachable via two interfaces: "org.example.Interface" and
1617
1481
    "net.example.AlternateInterface", the latter of which will have
1618
1482
    its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1619
1483
    "true", unless "deprecate" is passed with a False value.
1620
 
 
 
1484
    
1621
1485
    This works for methods and signals, and also for D-Bus properties
1622
1486
    (from DBusObjectWithProperties) and interfaces (from the
1623
1487
    dbus_interface_annotations decorator).
1624
1488
    """
1625
 
 
 
1489
    
1626
1490
    def wrapper(cls):
1627
1491
        for orig_interface_name, alt_interface_name in (
1628
1492
                alt_interface_names.items()):
1643
1507
                interface_names.add(alt_interface)
1644
1508
                # Is this a D-Bus signal?
1645
1509
                if getattr(attribute, "_dbus_is_signal", False):
1646
 
                    # Extract the original non-method undecorated
1647
 
                    # function by black magic
1648
1510
                    if sys.version_info.major == 2:
 
1511
                        # Extract the original non-method undecorated
 
1512
                        # function by black magic
1649
1513
                        nonmethod_func = (dict(
1650
1514
                            zip(attribute.func_code.co_freevars,
1651
1515
                                attribute.__closure__))
1652
1516
                                          ["func"].cell_contents)
1653
1517
                    else:
1654
 
                        nonmethod_func = (dict(
1655
 
                            zip(attribute.__code__.co_freevars,
1656
 
                                attribute.__closure__))
1657
 
                                          ["func"].cell_contents)
 
1518
                        nonmethod_func = attribute
1658
1519
                    # Create a new, but exactly alike, function
1659
1520
                    # object, and decorate it to be a new D-Bus signal
1660
1521
                    # with the alternate D-Bus interface name
1661
 
                    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__)
1662
1536
                    new_function = (dbus.service.signal(
1663
1537
                        alt_interface,
1664
1538
                        attribute._dbus_signature)(new_function))
1668
1542
                            attribute._dbus_annotations)
1669
1543
                    except AttributeError:
1670
1544
                        pass
1671
 
 
1672
1545
                    # Define a creator of a function to call both the
1673
1546
                    # original and alternate functions, so both the
1674
1547
                    # original and alternate signals gets sent when
1677
1550
                        """This function is a scope container to pass
1678
1551
                        func1 and func2 to the "call_both" function
1679
1552
                        outside of its arguments"""
1680
 
 
 
1553
                        
1681
1554
                        @functools.wraps(func2)
1682
1555
                        def call_both(*args, **kwargs):
1683
1556
                            """This function will emit two D-Bus
1684
1557
                            signals by calling func1 and func2"""
1685
1558
                            func1(*args, **kwargs)
1686
1559
                            func2(*args, **kwargs)
1687
 
                        # Make wrapper function look like a D-Bus
1688
 
                        # signal
 
1560
                        # Make wrapper function look like a D-Bus signal
1689
1561
                        for name, attr in inspect.getmembers(func2):
1690
1562
                            if name.startswith("_dbus_"):
1691
1563
                                setattr(call_both, name, attr)
1692
 
 
 
1564
                        
1693
1565
                        return call_both
1694
1566
                    # Create the "call_both" function and add it to
1695
1567
                    # the class
1705
1577
                            alt_interface,
1706
1578
                            attribute._dbus_in_signature,
1707
1579
                            attribute._dbus_out_signature)
1708
 
                        (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)))
1709
1585
                    # Copy annotations, if any
1710
1586
                    try:
1711
1587
                        attr[attrname]._dbus_annotations = dict(
1723
1599
                        attribute._dbus_access,
1724
1600
                        attribute._dbus_get_args_options
1725
1601
                        ["byte_arrays"])
1726
 
                                      (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)))
1727
1608
                    # Copy annotations, if any
1728
1609
                    try:
1729
1610
                        attr[attrname]._dbus_annotations = dict(
1738
1619
                    # to the class.
1739
1620
                    attr[attrname] = (
1740
1621
                        dbus_interface_annotations(alt_interface)
1741
 
                        (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)))
1742
1627
            if deprecate:
1743
1628
                # Deprecate all alternate interfaces
1744
 
                iname = "_AlternateDBusNames_interface_annotation{}"
 
1629
                iname="_AlternateDBusNames_interface_annotation{}"
1745
1630
                for interface_name in interface_names:
1746
 
 
 
1631
                    
1747
1632
                    @dbus_interface_annotations(interface_name)
1748
1633
                    def func(self):
1749
 
                        return {"org.freedesktop.DBus.Deprecated":
1750
 
                                "true"}
 
1634
                        return { "org.freedesktop.DBus.Deprecated":
 
1635
                                 "true" }
1751
1636
                    # Find an unused name
1752
1637
                    for aname in (iname.format(i)
1753
1638
                                  for i in itertools.count()):
1757
1642
            if interface_names:
1758
1643
                # Replace the class with a new subclass of it with
1759
1644
                # methods, signals, etc. as created above.
1760
 
                if sys.version_info.major == 2:
1761
 
                    cls = type(b"{}Alternate".format(cls.__name__),
1762
 
                               (cls, ), attr)
1763
 
                else:
1764
 
                    cls = type("{}Alternate".format(cls.__name__),
1765
 
                               (cls, ), attr)
 
1645
                cls = type(b"{}Alternate".format(cls.__name__),
 
1646
                           (cls, ), attr)
1766
1647
        return cls
1767
 
 
 
1648
    
1768
1649
    return wrapper
1769
1650
 
1770
1651
 
1772
1653
                            "se.bsnet.fukt.Mandos"})
1773
1654
class ClientDBus(Client, DBusObjectWithProperties):
1774
1655
    """A Client class using D-Bus
1775
 
 
 
1656
    
1776
1657
    Attributes:
1777
1658
    dbus_object_path: dbus.ObjectPath
1778
1659
    bus: dbus.SystemBus()
1779
1660
    """
1780
 
 
 
1661
    
1781
1662
    runtime_expansions = (Client.runtime_expansions
1782
1663
                          + ("dbus_object_path", ))
1783
 
 
 
1664
    
1784
1665
    _interface = "se.recompile.Mandos.Client"
1785
 
 
 
1666
    
1786
1667
    # dbus.service.Object doesn't use super(), so we can't either.
1787
 
 
1788
 
    def __init__(self, bus=None, *args, **kwargs):
 
1668
    
 
1669
    def __init__(self, bus = None, *args, **kwargs):
1789
1670
        self.bus = bus
1790
1671
        Client.__init__(self, *args, **kwargs)
1791
1672
        # Only now, when this client is initialized, can it show up on
1797
1678
            "/clients/" + client_object_name)
1798
1679
        DBusObjectWithProperties.__init__(self, self.bus,
1799
1680
                                          self.dbus_object_path)
1800
 
 
 
1681
    
1801
1682
    def notifychangeproperty(transform_func, dbus_name,
1802
1683
                             type_func=lambda x: x,
1803
1684
                             variant_level=1,
1805
1686
                             _interface=_interface):
1806
1687
        """ Modify a variable so that it's a property which announces
1807
1688
        its changes to DBus.
1808
 
 
 
1689
        
1809
1690
        transform_fun: Function that takes a value and a variant_level
1810
1691
                       and transforms it to a D-Bus type.
1811
1692
        dbus_name: D-Bus name of the variable
1814
1695
        variant_level: D-Bus variant level.  Default: 1
1815
1696
        """
1816
1697
        attrname = "_{}".format(dbus_name)
1817
 
 
 
1698
        
1818
1699
        def setter(self, value):
1819
1700
            if hasattr(self, "dbus_object_path"):
1820
1701
                if (not hasattr(self, attrname) or
1827
1708
                    else:
1828
1709
                        dbus_value = transform_func(
1829
1710
                            type_func(value),
1830
 
                            variant_level=variant_level)
 
1711
                            variant_level = variant_level)
1831
1712
                        self.PropertyChanged(dbus.String(dbus_name),
1832
1713
                                             dbus_value)
1833
1714
                        self.PropertiesChanged(
1834
1715
                            _interface,
1835
 
                            dbus.Dictionary({dbus.String(dbus_name):
1836
 
                                             dbus_value}),
 
1716
                            dbus.Dictionary({ dbus.String(dbus_name):
 
1717
                                              dbus_value }),
1837
1718
                            dbus.Array())
1838
1719
            setattr(self, attrname, value)
1839
 
 
 
1720
        
1840
1721
        return property(lambda self: getattr(self, attrname), setter)
1841
 
 
 
1722
    
1842
1723
    expires = notifychangeproperty(datetime_to_dbus, "Expires")
1843
1724
    approvals_pending = notifychangeproperty(dbus.Boolean,
1844
1725
                                             "ApprovalPending",
1845
 
                                             type_func=bool)
 
1726
                                             type_func = bool)
1846
1727
    enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1847
1728
    last_enabled = notifychangeproperty(datetime_to_dbus,
1848
1729
                                        "LastEnabled")
1849
1730
    checker = notifychangeproperty(
1850
1731
        dbus.Boolean, "CheckerRunning",
1851
 
        type_func=lambda checker: checker is not None)
 
1732
        type_func = lambda checker: checker is not None)
1852
1733
    last_checked_ok = notifychangeproperty(datetime_to_dbus,
1853
1734
                                           "LastCheckedOK")
1854
1735
    last_checker_status = notifychangeproperty(dbus.Int16,
1859
1740
                                               "ApprovedByDefault")
1860
1741
    approval_delay = notifychangeproperty(
1861
1742
        dbus.UInt64, "ApprovalDelay",
1862
 
        type_func=lambda td: td.total_seconds() * 1000)
 
1743
        type_func = lambda td: td.total_seconds() * 1000)
1863
1744
    approval_duration = notifychangeproperty(
1864
1745
        dbus.UInt64, "ApprovalDuration",
1865
 
        type_func=lambda td: td.total_seconds() * 1000)
 
1746
        type_func = lambda td: td.total_seconds() * 1000)
1866
1747
    host = notifychangeproperty(dbus.String, "Host")
1867
1748
    timeout = notifychangeproperty(
1868
1749
        dbus.UInt64, "Timeout",
1869
 
        type_func=lambda td: td.total_seconds() * 1000)
 
1750
        type_func = lambda td: td.total_seconds() * 1000)
1870
1751
    extended_timeout = notifychangeproperty(
1871
1752
        dbus.UInt64, "ExtendedTimeout",
1872
 
        type_func=lambda td: td.total_seconds() * 1000)
 
1753
        type_func = lambda td: td.total_seconds() * 1000)
1873
1754
    interval = notifychangeproperty(
1874
1755
        dbus.UInt64, "Interval",
1875
 
        type_func=lambda td: td.total_seconds() * 1000)
 
1756
        type_func = lambda td: td.total_seconds() * 1000)
1876
1757
    checker_command = notifychangeproperty(dbus.String, "Checker")
1877
1758
    secret = notifychangeproperty(dbus.ByteArray, "Secret",
1878
1759
                                  invalidate_only=True)
1879
 
 
 
1760
    
1880
1761
    del notifychangeproperty
1881
 
 
 
1762
    
1882
1763
    def __del__(self, *args, **kwargs):
1883
1764
        try:
1884
1765
            self.remove_from_connection()
1887
1768
        if hasattr(DBusObjectWithProperties, "__del__"):
1888
1769
            DBusObjectWithProperties.__del__(self, *args, **kwargs)
1889
1770
        Client.__del__(self, *args, **kwargs)
1890
 
 
 
1771
    
1891
1772
    def checker_callback(self, source, condition,
1892
1773
                         connection, command, *args, **kwargs):
1893
1774
        ret = Client.checker_callback(self, source, condition,
1909
1790
                                      | self.last_checker_signal),
1910
1791
                                  dbus.String(command))
1911
1792
        return ret
1912
 
 
 
1793
    
1913
1794
    def start_checker(self, *args, **kwargs):
1914
1795
        old_checker_pid = getattr(self.checker, "pid", None)
1915
1796
        r = Client.start_checker(self, *args, **kwargs)
1919
1800
            # Emit D-Bus signal
1920
1801
            self.CheckerStarted(self.current_checker_command)
1921
1802
        return r
1922
 
 
 
1803
    
1923
1804
    def _reset_approved(self):
1924
1805
        self.approved = None
1925
1806
        return False
1926
 
 
 
1807
    
1927
1808
    def approve(self, value=True):
1928
1809
        self.approved = value
1929
 
        GLib.timeout_add(int(self.approval_duration.total_seconds()
1930
 
                             * 1000), self._reset_approved)
 
1810
        gobject.timeout_add(int(self.approval_duration.total_seconds()
 
1811
                                * 1000), self._reset_approved)
1931
1812
        self.send_changedstate()
1932
 
 
1933
 
    #  D-Bus methods, signals & properties
1934
 
 
1935
 
    #  Interfaces
1936
 
 
1937
 
    #  Signals
1938
 
 
 
1813
    
 
1814
    ## D-Bus methods, signals & properties
 
1815
    
 
1816
    ## Interfaces
 
1817
    
 
1818
    ## Signals
 
1819
    
1939
1820
    # CheckerCompleted - signal
1940
1821
    @dbus.service.signal(_interface, signature="nxs")
1941
1822
    def CheckerCompleted(self, exitcode, waitstatus, command):
1942
1823
        "D-Bus signal"
1943
1824
        pass
1944
 
 
 
1825
    
1945
1826
    # CheckerStarted - signal
1946
1827
    @dbus.service.signal(_interface, signature="s")
1947
1828
    def CheckerStarted(self, command):
1948
1829
        "D-Bus signal"
1949
1830
        pass
1950
 
 
 
1831
    
1951
1832
    # PropertyChanged - signal
1952
1833
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1953
1834
    @dbus.service.signal(_interface, signature="sv")
1954
1835
    def PropertyChanged(self, property, value):
1955
1836
        "D-Bus signal"
1956
1837
        pass
1957
 
 
 
1838
    
1958
1839
    # GotSecret - signal
1959
1840
    @dbus.service.signal(_interface)
1960
1841
    def GotSecret(self):
1963
1844
        server to mandos-client
1964
1845
        """
1965
1846
        pass
1966
 
 
 
1847
    
1967
1848
    # Rejected - signal
1968
1849
    @dbus.service.signal(_interface, signature="s")
1969
1850
    def Rejected(self, reason):
1970
1851
        "D-Bus signal"
1971
1852
        pass
1972
 
 
 
1853
    
1973
1854
    # NeedApproval - signal
1974
1855
    @dbus.service.signal(_interface, signature="tb")
1975
1856
    def NeedApproval(self, timeout, default):
1976
1857
        "D-Bus signal"
1977
1858
        return self.need_approval()
1978
 
 
1979
 
    #  Methods
1980
 
 
 
1859
    
 
1860
    ## Methods
 
1861
    
1981
1862
    # Approve - method
1982
1863
    @dbus.service.method(_interface, in_signature="b")
1983
1864
    def Approve(self, value):
1984
1865
        self.approve(value)
1985
 
 
 
1866
    
1986
1867
    # CheckedOK - method
1987
1868
    @dbus.service.method(_interface)
1988
1869
    def CheckedOK(self):
1989
1870
        self.checked_ok()
1990
 
 
 
1871
    
1991
1872
    # Enable - method
1992
1873
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1993
1874
    @dbus.service.method(_interface)
1994
1875
    def Enable(self):
1995
1876
        "D-Bus method"
1996
1877
        self.enable()
1997
 
 
 
1878
    
1998
1879
    # StartChecker - method
1999
1880
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2000
1881
    @dbus.service.method(_interface)
2001
1882
    def StartChecker(self):
2002
1883
        "D-Bus method"
2003
1884
        self.start_checker()
2004
 
 
 
1885
    
2005
1886
    # Disable - method
2006
1887
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2007
1888
    @dbus.service.method(_interface)
2008
1889
    def Disable(self):
2009
1890
        "D-Bus method"
2010
1891
        self.disable()
2011
 
 
 
1892
    
2012
1893
    # StopChecker - method
2013
1894
    @dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2014
1895
    @dbus.service.method(_interface)
2015
1896
    def StopChecker(self):
2016
1897
        self.stop_checker()
2017
 
 
2018
 
    #  Properties
2019
 
 
 
1898
    
 
1899
    ## Properties
 
1900
    
2020
1901
    # ApprovalPending - property
2021
1902
    @dbus_service_property(_interface, signature="b", access="read")
2022
1903
    def ApprovalPending_dbus_property(self):
2023
1904
        return dbus.Boolean(bool(self.approvals_pending))
2024
 
 
 
1905
    
2025
1906
    # ApprovedByDefault - property
2026
1907
    @dbus_service_property(_interface,
2027
1908
                           signature="b",
2030
1911
        if value is None:       # get
2031
1912
            return dbus.Boolean(self.approved_by_default)
2032
1913
        self.approved_by_default = bool(value)
2033
 
 
 
1914
    
2034
1915
    # ApprovalDelay - property
2035
1916
    @dbus_service_property(_interface,
2036
1917
                           signature="t",
2040
1921
            return dbus.UInt64(self.approval_delay.total_seconds()
2041
1922
                               * 1000)
2042
1923
        self.approval_delay = datetime.timedelta(0, 0, 0, value)
2043
 
 
 
1924
    
2044
1925
    # ApprovalDuration - property
2045
1926
    @dbus_service_property(_interface,
2046
1927
                           signature="t",
2050
1931
            return dbus.UInt64(self.approval_duration.total_seconds()
2051
1932
                               * 1000)
2052
1933
        self.approval_duration = datetime.timedelta(0, 0, 0, value)
2053
 
 
 
1934
    
2054
1935
    # Name - property
2055
1936
    @dbus_annotations(
2056
1937
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2057
1938
    @dbus_service_property(_interface, signature="s", access="read")
2058
1939
    def Name_dbus_property(self):
2059
1940
        return dbus.String(self.name)
2060
 
 
2061
 
    # KeyID - property
2062
 
    @dbus_annotations(
2063
 
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2064
 
    @dbus_service_property(_interface, signature="s", access="read")
2065
 
    def KeyID_dbus_property(self):
2066
 
        return dbus.String(self.key_id)
2067
 
 
 
1941
    
2068
1942
    # Fingerprint - property
2069
1943
    @dbus_annotations(
2070
1944
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2071
1945
    @dbus_service_property(_interface, signature="s", access="read")
2072
1946
    def Fingerprint_dbus_property(self):
2073
1947
        return dbus.String(self.fingerprint)
2074
 
 
 
1948
    
2075
1949
    # Host - property
2076
1950
    @dbus_service_property(_interface,
2077
1951
                           signature="s",
2080
1954
        if value is None:       # get
2081
1955
            return dbus.String(self.host)
2082
1956
        self.host = str(value)
2083
 
 
 
1957
    
2084
1958
    # Created - property
2085
1959
    @dbus_annotations(
2086
1960
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2087
1961
    @dbus_service_property(_interface, signature="s", access="read")
2088
1962
    def Created_dbus_property(self):
2089
1963
        return datetime_to_dbus(self.created)
2090
 
 
 
1964
    
2091
1965
    # LastEnabled - property
2092
1966
    @dbus_service_property(_interface, signature="s", access="read")
2093
1967
    def LastEnabled_dbus_property(self):
2094
1968
        return datetime_to_dbus(self.last_enabled)
2095
 
 
 
1969
    
2096
1970
    # Enabled - property
2097
1971
    @dbus_service_property(_interface,
2098
1972
                           signature="b",
2104
1978
            self.enable()
2105
1979
        else:
2106
1980
            self.disable()
2107
 
 
 
1981
    
2108
1982
    # LastCheckedOK - property
2109
1983
    @dbus_service_property(_interface,
2110
1984
                           signature="s",
2114
1988
            self.checked_ok()
2115
1989
            return
2116
1990
        return datetime_to_dbus(self.last_checked_ok)
2117
 
 
 
1991
    
2118
1992
    # LastCheckerStatus - property
2119
1993
    @dbus_service_property(_interface, signature="n", access="read")
2120
1994
    def LastCheckerStatus_dbus_property(self):
2121
1995
        return dbus.Int16(self.last_checker_status)
2122
 
 
 
1996
    
2123
1997
    # Expires - property
2124
1998
    @dbus_service_property(_interface, signature="s", access="read")
2125
1999
    def Expires_dbus_property(self):
2126
2000
        return datetime_to_dbus(self.expires)
2127
 
 
 
2001
    
2128
2002
    # LastApprovalRequest - property
2129
2003
    @dbus_service_property(_interface, signature="s", access="read")
2130
2004
    def LastApprovalRequest_dbus_property(self):
2131
2005
        return datetime_to_dbus(self.last_approval_request)
2132
 
 
 
2006
    
2133
2007
    # Timeout - property
2134
2008
    @dbus_service_property(_interface,
2135
2009
                           signature="t",
2150
2024
                if (getattr(self, "disable_initiator_tag", None)
2151
2025
                    is None):
2152
2026
                    return
2153
 
                GLib.source_remove(self.disable_initiator_tag)
2154
 
                self.disable_initiator_tag = GLib.timeout_add(
 
2027
                gobject.source_remove(self.disable_initiator_tag)
 
2028
                self.disable_initiator_tag = gobject.timeout_add(
2155
2029
                    int((self.expires - now).total_seconds() * 1000),
2156
2030
                    self.disable)
2157
 
 
 
2031
    
2158
2032
    # ExtendedTimeout - property
2159
2033
    @dbus_service_property(_interface,
2160
2034
                           signature="t",
2164
2038
            return dbus.UInt64(self.extended_timeout.total_seconds()
2165
2039
                               * 1000)
2166
2040
        self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2167
 
 
 
2041
    
2168
2042
    # Interval - property
2169
2043
    @dbus_service_property(_interface,
2170
2044
                           signature="t",
2177
2051
            return
2178
2052
        if self.enabled:
2179
2053
            # Reschedule checker run
2180
 
            GLib.source_remove(self.checker_initiator_tag)
2181
 
            self.checker_initiator_tag = GLib.timeout_add(
 
2054
            gobject.source_remove(self.checker_initiator_tag)
 
2055
            self.checker_initiator_tag = gobject.timeout_add(
2182
2056
                value, self.start_checker)
2183
 
            self.start_checker()  # Start one now, too
2184
 
 
 
2057
            self.start_checker() # Start one now, too
 
2058
    
2185
2059
    # Checker - property
2186
2060
    @dbus_service_property(_interface,
2187
2061
                           signature="s",
2190
2064
        if value is None:       # get
2191
2065
            return dbus.String(self.checker_command)
2192
2066
        self.checker_command = str(value)
2193
 
 
 
2067
    
2194
2068
    # CheckerRunning - property
2195
2069
    @dbus_service_property(_interface,
2196
2070
                           signature="b",
2202
2076
            self.start_checker()
2203
2077
        else:
2204
2078
            self.stop_checker()
2205
 
 
 
2079
    
2206
2080
    # ObjectPath - property
2207
2081
    @dbus_annotations(
2208
2082
        {"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2209
2083
         "org.freedesktop.DBus.Deprecated": "true"})
2210
2084
    @dbus_service_property(_interface, signature="o", access="read")
2211
2085
    def ObjectPath_dbus_property(self):
2212
 
        return self.dbus_object_path  # is already a dbus.ObjectPath
2213
 
 
 
2086
        return self.dbus_object_path # is already a dbus.ObjectPath
 
2087
    
2214
2088
    # Secret = property
2215
2089
    @dbus_annotations(
2216
2090
        {"org.freedesktop.DBus.Property.EmitsChangedSignal":
2221
2095
                           byte_arrays=True)
2222
2096
    def Secret_dbus_property(self, value):
2223
2097
        self.secret = bytes(value)
2224
 
 
 
2098
    
2225
2099
    del _interface
2226
2100
 
2227
2101
 
2228
 
class ProxyClient:
2229
 
    def __init__(self, child_pipe, key_id, fpr, address):
 
2102
class ProxyClient(object):
 
2103
    def __init__(self, child_pipe, fpr, address):
2230
2104
        self._pipe = child_pipe
2231
 
        self._pipe.send(('init', key_id, fpr, address))
 
2105
        self._pipe.send(('init', fpr, address))
2232
2106
        if not self._pipe.recv():
2233
 
            raise KeyError(key_id or fpr)
2234
 
 
 
2107
            raise KeyError(fpr)
 
2108
    
2235
2109
    def __getattribute__(self, name):
2236
2110
        if name == '_pipe':
2237
2111
            return super(ProxyClient, self).__getattribute__(name)
2240
2114
        if data[0] == 'data':
2241
2115
            return data[1]
2242
2116
        if data[0] == 'function':
2243
 
 
 
2117
            
2244
2118
            def func(*args, **kwargs):
2245
2119
                self._pipe.send(('funcall', name, args, kwargs))
2246
2120
                return self._pipe.recv()[1]
2247
 
 
 
2121
            
2248
2122
            return func
2249
 
 
 
2123
    
2250
2124
    def __setattr__(self, name, value):
2251
2125
        if name == '_pipe':
2252
2126
            return super(ProxyClient, self).__setattr__(name, value)
2255
2129
 
2256
2130
class ClientHandler(socketserver.BaseRequestHandler, object):
2257
2131
    """A class to handle client connections.
2258
 
 
 
2132
    
2259
2133
    Instantiated once for each connection to handle it.
2260
2134
    Note: This will run in its own forked process."""
2261
 
 
 
2135
    
2262
2136
    def handle(self):
2263
2137
        with contextlib.closing(self.server.child_pipe) as child_pipe:
2264
2138
            logger.info("TCP connection from: %s",
2265
2139
                        str(self.client_address))
2266
2140
            logger.debug("Pipe FD: %d",
2267
2141
                         self.server.child_pipe.fileno())
2268
 
 
 
2142
            
2269
2143
            session = gnutls.ClientSession(self.request)
2270
 
 
2271
 
            # priority = ':'.join(("NONE", "+VERS-TLS1.1",
2272
 
            #                       "+AES-256-CBC", "+SHA1",
2273
 
            #                       "+COMP-NULL", "+CTYPE-OPENPGP",
2274
 
            #                       "+DHE-DSS"))
 
2144
            
 
2145
            #priority = ':'.join(("NONE", "+VERS-TLS1.1",
 
2146
            #                      "+AES-256-CBC", "+SHA1",
 
2147
            #                      "+COMP-NULL", "+CTYPE-OPENPGP",
 
2148
            #                      "+DHE-DSS"))
2275
2149
            # Use a fallback default, since this MUST be set.
2276
2150
            priority = self.server.gnutls_priority
2277
2151
            if priority is None:
2278
2152
                priority = "NORMAL"
2279
 
            gnutls.priority_set_direct(session._c_object,
2280
 
                                       priority.encode("utf-8"),
 
2153
            gnutls.priority_set_direct(session._c_object, priority,
2281
2154
                                       None)
2282
 
 
 
2155
            
2283
2156
            # Start communication using the Mandos protocol
2284
2157
            # Get protocol number
2285
2158
            line = self.request.makefile().readline()
2290
2163
            except (ValueError, IndexError, RuntimeError) as error:
2291
2164
                logger.error("Unknown protocol version: %s", error)
2292
2165
                return
2293
 
 
 
2166
            
2294
2167
            # Start GnuTLS connection
2295
2168
            try:
2296
2169
                session.handshake()
2300
2173
                # established.  Just abandon the request.
2301
2174
                return
2302
2175
            logger.debug("Handshake succeeded")
2303
 
 
 
2176
            
2304
2177
            approval_required = False
2305
2178
            try:
2306
 
                if gnutls.has_rawpk:
2307
 
                    fpr = b""
2308
 
                    try:
2309
 
                        key_id = self.key_id(
2310
 
                            self.peer_certificate(session))
2311
 
                    except (TypeError, gnutls.Error) as error:
2312
 
                        logger.warning("Bad certificate: %s", error)
2313
 
                        return
2314
 
                    logger.debug("Key ID: %s", key_id)
2315
 
 
2316
 
                else:
2317
 
                    key_id = b""
2318
 
                    try:
2319
 
                        fpr = self.fingerprint(
2320
 
                            self.peer_certificate(session))
2321
 
                    except (TypeError, gnutls.Error) as error:
2322
 
                        logger.warning("Bad certificate: %s", error)
2323
 
                        return
2324
 
                    logger.debug("Fingerprint: %s", fpr)
2325
 
 
2326
 
                try:
2327
 
                    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,
2328
2189
                                         self.client_address)
2329
2190
                except KeyError:
2330
2191
                    return
2331
 
 
 
2192
                
2332
2193
                if client.approval_delay:
2333
2194
                    delay = client.approval_delay
2334
2195
                    client.approvals_pending += 1
2335
2196
                    approval_required = True
2336
 
 
 
2197
                
2337
2198
                while True:
2338
2199
                    if not client.enabled:
2339
2200
                        logger.info("Client %s is disabled",
2342
2203
                            # Emit D-Bus signal
2343
2204
                            client.Rejected("Disabled")
2344
2205
                        return
2345
 
 
 
2206
                    
2346
2207
                    if client.approved or not client.approval_delay:
2347
 
                        # We are approved or approval is disabled
 
2208
                        #We are approved or approval is disabled
2348
2209
                        break
2349
2210
                    elif client.approved is None:
2350
2211
                        logger.info("Client %s needs approval",
2361
2222
                            # Emit D-Bus signal
2362
2223
                            client.Rejected("Denied")
2363
2224
                        return
2364
 
 
2365
 
                    # wait until timeout or approved
 
2225
                    
 
2226
                    #wait until timeout or approved
2366
2227
                    time = datetime.datetime.now()
2367
2228
                    client.changedstate.acquire()
2368
2229
                    client.changedstate.wait(delay.total_seconds())
2381
2242
                            break
2382
2243
                    else:
2383
2244
                        delay -= time2 - time
2384
 
 
 
2245
                
2385
2246
                try:
2386
2247
                    session.send(client.secret)
2387
2248
                except gnutls.Error as error:
2388
2249
                    logger.warning("gnutls send failed",
2389
 
                                   exc_info=error)
 
2250
                                   exc_info = error)
2390
2251
                    return
2391
 
 
 
2252
                
2392
2253
                logger.info("Sending secret to %s", client.name)
2393
2254
                # bump the timeout using extended_timeout
2394
2255
                client.bump_timeout(client.extended_timeout)
2395
2256
                if self.server.use_dbus:
2396
2257
                    # Emit D-Bus signal
2397
2258
                    client.GotSecret()
2398
 
 
 
2259
            
2399
2260
            finally:
2400
2261
                if approval_required:
2401
2262
                    client.approvals_pending -= 1
2404
2265
                except gnutls.Error as error:
2405
2266
                    logger.warning("GnuTLS bye failed",
2406
2267
                                   exc_info=error)
2407
 
 
 
2268
    
2408
2269
    @staticmethod
2409
2270
    def peer_certificate(session):
2410
 
        "Return the peer's certificate as a bytestring"
2411
 
        try:
2412
 
            cert_type = gnutls.certificate_type_get2(session._c_object,
2413
 
                                                     gnutls.CTYPE_PEERS)
2414
 
        except AttributeError:
2415
 
            cert_type = gnutls.certificate_type_get(session._c_object)
2416
 
        if gnutls.has_rawpk:
2417
 
            valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2418
 
        else:
2419
 
            valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2420
 
        # If not a valid certificate type...
2421
 
        if cert_type not in valid_cert_types:
2422
 
            logger.info("Cert type %r not in %r", cert_type,
2423
 
                        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):
2424
2275
            # ...return invalid data
2425
2276
            return b""
2426
2277
        list_size = ctypes.c_uint(1)
2432
2283
            return None
2433
2284
        cert = cert_list[0]
2434
2285
        return ctypes.string_at(cert.data, cert.size)
2435
 
 
2436
 
    @staticmethod
2437
 
    def key_id(certificate):
2438
 
        "Convert a certificate bytestring to a hexdigit key ID"
2439
 
        # New GnuTLS "datum" with the public key
2440
 
        datum = gnutls.datum_t(
2441
 
            ctypes.cast(ctypes.c_char_p(certificate),
2442
 
                        ctypes.POINTER(ctypes.c_ubyte)),
2443
 
            ctypes.c_uint(len(certificate)))
2444
 
        # XXX all these need to be created in the gnutls "module"
2445
 
        # New empty GnuTLS certificate
2446
 
        pubkey = gnutls.pubkey_t()
2447
 
        gnutls.pubkey_init(ctypes.byref(pubkey))
2448
 
        # Import the raw public key into the certificate
2449
 
        gnutls.pubkey_import(pubkey,
2450
 
                             ctypes.byref(datum),
2451
 
                             gnutls.X509_FMT_DER)
2452
 
        # New buffer for the key ID
2453
 
        buf = ctypes.create_string_buffer(32)
2454
 
        buf_len = ctypes.c_size_t(len(buf))
2455
 
        # Get the key ID from the raw public key into the buffer
2456
 
        gnutls.pubkey_get_key_id(pubkey,
2457
 
                                 gnutls.KEYID_USE_SHA256,
2458
 
                                 ctypes.cast(ctypes.byref(buf),
2459
 
                                             ctypes.POINTER(ctypes.c_ubyte)),
2460
 
                                 ctypes.byref(buf_len))
2461
 
        # Deinit the certificate
2462
 
        gnutls.pubkey_deinit(pubkey)
2463
 
 
2464
 
        # Convert the buffer to a Python bytestring
2465
 
        key_id = ctypes.string_at(buf, buf_len.value)
2466
 
        # Convert the bytestring to hexadecimal notation
2467
 
        hex_key_id = binascii.hexlify(key_id).upper()
2468
 
        return hex_key_id
2469
 
 
 
2286
    
2470
2287
    @staticmethod
2471
2288
    def fingerprint(openpgp):
2472
2289
        "Convert an OpenPGP bytestring to a hexdigit fingerprint"
2487
2304
                                       ctypes.byref(crtverify))
2488
2305
        if crtverify.value != 0:
2489
2306
            gnutls.openpgp_crt_deinit(crt)
2490
 
            raise gnutls.CertificateSecurityError(code
2491
 
                                                  =crtverify.value)
 
2307
            raise gnutls.CertificateSecurityError("Verify failed")
2492
2308
        # New buffer for the fingerprint
2493
2309
        buf = ctypes.create_string_buffer(20)
2494
2310
        buf_len = ctypes.c_size_t()
2504
2320
        return hex_fpr
2505
2321
 
2506
2322
 
2507
 
class MultiprocessingMixIn:
 
2323
class MultiprocessingMixIn(object):
2508
2324
    """Like socketserver.ThreadingMixIn, but with multiprocessing"""
2509
 
 
 
2325
    
2510
2326
    def sub_process_main(self, request, address):
2511
2327
        try:
2512
2328
            self.finish_request(request, address)
2513
2329
        except Exception:
2514
2330
            self.handle_error(request, address)
2515
2331
        self.close_request(request)
2516
 
 
 
2332
    
2517
2333
    def process_request(self, request, address):
2518
2334
        """Start a new process to process the request."""
2519
 
        proc = multiprocessing.Process(target=self.sub_process_main,
2520
 
                                       args=(request, address))
 
2335
        proc = multiprocessing.Process(target = self.sub_process_main,
 
2336
                                       args = (request, address))
2521
2337
        proc.start()
2522
2338
        return proc
2523
2339
 
2524
2340
 
2525
 
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
 
2341
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2526
2342
    """ adds a pipe to the MixIn """
2527
 
 
 
2343
    
2528
2344
    def process_request(self, request, client_address):
2529
2345
        """Overrides and wraps the original process_request().
2530
 
 
 
2346
        
2531
2347
        This function creates a new pipe in self.pipe
2532
2348
        """
2533
2349
        parent_pipe, self.child_pipe = multiprocessing.Pipe()
2534
 
 
 
2350
        
2535
2351
        proc = MultiprocessingMixIn.process_request(self, request,
2536
2352
                                                    client_address)
2537
2353
        self.child_pipe.close()
2538
2354
        self.add_pipe(parent_pipe, proc)
2539
 
 
 
2355
    
2540
2356
    def add_pipe(self, parent_pipe, proc):
2541
2357
        """Dummy function; override as necessary"""
2542
2358
        raise NotImplementedError()
2543
2359
 
2544
2360
 
2545
2361
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2546
 
                     socketserver.TCPServer):
 
2362
                     socketserver.TCPServer, object):
2547
2363
    """IPv6-capable TCP server.  Accepts 'None' as address and/or port
2548
 
 
 
2364
    
2549
2365
    Attributes:
2550
2366
        enabled:        Boolean; whether this server is activated yet
2551
2367
        interface:      None or a network interface name (string)
2552
2368
        use_ipv6:       Boolean; to use IPv6 or not
2553
2369
    """
2554
 
 
 
2370
    
2555
2371
    def __init__(self, server_address, RequestHandlerClass,
2556
2372
                 interface=None,
2557
2373
                 use_ipv6=True,
2567
2383
            self.socketfd = socketfd
2568
2384
            # Save the original socket.socket() function
2569
2385
            self.socket_socket = socket.socket
2570
 
 
2571
2386
            # To implement --socket, we monkey patch socket.socket.
2572
 
            #
 
2387
            # 
2573
2388
            # (When socketserver.TCPServer is a new-style class, we
2574
2389
            # could make self.socket into a property instead of monkey
2575
2390
            # patching socket.socket.)
2576
 
            #
 
2391
            # 
2577
2392
            # Create a one-time-only replacement for socket.socket()
2578
2393
            @functools.wraps(socket.socket)
2579
2394
            def socket_wrapper(*args, **kwargs):
2591
2406
        # socket_wrapper(), if socketfd was set.
2592
2407
        socketserver.TCPServer.__init__(self, server_address,
2593
2408
                                        RequestHandlerClass)
2594
 
 
 
2409
    
2595
2410
    def server_bind(self):
2596
2411
        """This overrides the normal server_bind() function
2597
2412
        to bind to an interface if one was specified, and also NOT to
2598
2413
        bind to an address or port if they were not specified."""
2599
 
        global SO_BINDTODEVICE
2600
2414
        if self.interface is not None:
2601
2415
            if SO_BINDTODEVICE is None:
2602
 
                # Fall back to a hard-coded value which seems to be
2603
 
                # common enough.
2604
 
                logger.warning("SO_BINDTODEVICE not found, trying 25")
2605
 
                SO_BINDTODEVICE = 25
2606
 
            try:
2607
 
                self.socket.setsockopt(
2608
 
                    socket.SOL_SOCKET, SO_BINDTODEVICE,
2609
 
                    (self.interface + "\0").encode("utf-8"))
2610
 
            except socket.error as error:
2611
 
                if error.errno == errno.EPERM:
2612
 
                    logger.error("No permission to bind to"
2613
 
                                 " interface %s", self.interface)
2614
 
                elif error.errno == errno.ENOPROTOOPT:
2615
 
                    logger.error("SO_BINDTODEVICE not available;"
2616
 
                                 " cannot bind to interface %s",
2617
 
                                 self.interface)
2618
 
                elif error.errno == errno.ENODEV:
2619
 
                    logger.error("Interface %s does not exist,"
2620
 
                                 " cannot bind", self.interface)
2621
 
                else:
2622
 
                    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
2623
2437
        # Only bind(2) the socket if we really need to.
2624
2438
        if self.server_address[0] or self.server_address[1]:
2625
 
            if self.server_address[1]:
2626
 
                self.allow_reuse_address = True
2627
2439
            if not self.server_address[0]:
2628
2440
                if self.address_family == socket.AF_INET6:
2629
 
                    any_address = "::"  # in6addr_any
 
2441
                    any_address = "::" # in6addr_any
2630
2442
                else:
2631
 
                    any_address = "0.0.0.0"  # INADDR_ANY
 
2443
                    any_address = "0.0.0.0" # INADDR_ANY
2632
2444
                self.server_address = (any_address,
2633
2445
                                       self.server_address[1])
2634
2446
            elif not self.server_address[1]:
2644
2456
 
2645
2457
class MandosServer(IPv6_TCPServer):
2646
2458
    """Mandos server.
2647
 
 
 
2459
    
2648
2460
    Attributes:
2649
2461
        clients:        set of Client objects
2650
2462
        gnutls_priority GnuTLS priority string
2651
2463
        use_dbus:       Boolean; to emit D-Bus signals or not
2652
 
 
2653
 
    Assumes a GLib.MainLoop event loop.
 
2464
    
 
2465
    Assumes a gobject.MainLoop event loop.
2654
2466
    """
2655
 
 
 
2467
    
2656
2468
    def __init__(self, server_address, RequestHandlerClass,
2657
2469
                 interface=None,
2658
2470
                 use_ipv6=True,
2668
2480
        self.gnutls_priority = gnutls_priority
2669
2481
        IPv6_TCPServer.__init__(self, server_address,
2670
2482
                                RequestHandlerClass,
2671
 
                                interface=interface,
2672
 
                                use_ipv6=use_ipv6,
2673
 
                                socketfd=socketfd)
2674
 
 
 
2483
                                interface = interface,
 
2484
                                use_ipv6 = use_ipv6,
 
2485
                                socketfd = socketfd)
 
2486
    
2675
2487
    def server_activate(self):
2676
2488
        if self.enabled:
2677
2489
            return socketserver.TCPServer.server_activate(self)
2678
 
 
 
2490
    
2679
2491
    def enable(self):
2680
2492
        self.enabled = True
2681
 
 
 
2493
    
2682
2494
    def add_pipe(self, parent_pipe, proc):
2683
2495
        # Call "handle_ipc" for both data and EOF events
2684
 
        GLib.io_add_watch(
2685
 
            GLib.IOChannel.unix_new(parent_pipe.fileno()),
2686
 
            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,
2687
2499
            functools.partial(self.handle_ipc,
2688
 
                              parent_pipe=parent_pipe,
2689
 
                              proc=proc))
2690
 
 
 
2500
                              parent_pipe = parent_pipe,
 
2501
                              proc = proc))
 
2502
    
2691
2503
    def handle_ipc(self, source, condition,
2692
2504
                   parent_pipe=None,
2693
 
                   proc=None,
 
2505
                   proc = None,
2694
2506
                   client_object=None):
2695
2507
        # error, or the other end of multiprocessing.Pipe has closed
2696
 
        if condition & (GLib.IO_ERR | GLib.IO_HUP):
 
2508
        if condition & (gobject.IO_ERR | gobject.IO_HUP):
2697
2509
            # Wait for other process to exit
2698
2510
            proc.join()
2699
2511
            return False
2700
 
 
 
2512
        
2701
2513
        # Read a request from the child
2702
2514
        request = parent_pipe.recv()
2703
2515
        command = request[0]
2704
 
 
 
2516
        
2705
2517
        if command == 'init':
2706
 
            key_id = request[1].decode("ascii")
2707
 
            fpr = request[2].decode("ascii")
2708
 
            address = request[3]
2709
 
 
2710
 
            for c in self.clients.values():
2711
 
                if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2712
 
                    continue
2713
 
                if key_id and c.key_id == key_id:
2714
 
                    client = c
2715
 
                    break
2716
 
                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:
2717
2523
                    client = c
2718
2524
                    break
2719
2525
            else:
2720
 
                logger.info("Client not found for key ID: %s, address"
2721
 
                            ": %s", key_id or fpr, address)
 
2526
                logger.info("Client not found for fingerprint: %s, ad"
 
2527
                            "dress: %s", fpr, address)
2722
2528
                if self.use_dbus:
2723
2529
                    # Emit D-Bus signal
2724
 
                    mandos_dbus_service.ClientNotFound(key_id or fpr,
 
2530
                    mandos_dbus_service.ClientNotFound(fpr,
2725
2531
                                                       address[0])
2726
2532
                parent_pipe.send(False)
2727
2533
                return False
2728
 
 
2729
 
            GLib.io_add_watch(
2730
 
                GLib.IOChannel.unix_new(parent_pipe.fileno()),
2731
 
                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,
2732
2538
                functools.partial(self.handle_ipc,
2733
 
                                  parent_pipe=parent_pipe,
2734
 
                                  proc=proc,
2735
 
                                  client_object=client))
 
2539
                                  parent_pipe = parent_pipe,
 
2540
                                  proc = proc,
 
2541
                                  client_object = client))
2736
2542
            parent_pipe.send(True)
2737
2543
            # remove the old hook in favor of the new above hook on
2738
2544
            # same fileno
2741
2547
            funcname = request[1]
2742
2548
            args = request[2]
2743
2549
            kwargs = request[3]
2744
 
 
 
2550
            
2745
2551
            parent_pipe.send(('data', getattr(client_object,
2746
2552
                                              funcname)(*args,
2747
2553
                                                        **kwargs)))
2748
 
 
 
2554
        
2749
2555
        if command == 'getattr':
2750
2556
            attrname = request[1]
2751
2557
            if isinstance(client_object.__getattribute__(attrname),
2754
2560
            else:
2755
2561
                parent_pipe.send((
2756
2562
                    'data', client_object.__getattribute__(attrname)))
2757
 
 
 
2563
        
2758
2564
        if command == 'setattr':
2759
2565
            attrname = request[1]
2760
2566
            value = request[2]
2761
2567
            setattr(client_object, attrname, value)
2762
 
 
 
2568
        
2763
2569
        return True
2764
2570
 
2765
2571
 
2766
2572
def rfc3339_duration_to_delta(duration):
2767
2573
    """Parse an RFC 3339 "duration" and return a datetime.timedelta
2768
 
 
2769
 
    >>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2770
 
    True
2771
 
    >>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2772
 
    True
2773
 
    >>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2774
 
    True
2775
 
    >>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2776
 
    True
2777
 
    >>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2778
 
    True
2779
 
    >>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2780
 
    True
2781
 
    >>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2782
 
    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)
2783
2589
    """
2784
 
 
 
2590
    
2785
2591
    # Parsing an RFC 3339 duration with regular expressions is not
2786
2592
    # possible - there would have to be multiple places for the same
2787
2593
    # values, like seconds.  The current code, while more esoteric, is
2788
2594
    # cleaner without depending on a parsing library.  If Python had a
2789
2595
    # built-in library for parsing we would use it, but we'd like to
2790
2596
    # avoid excessive use of external libraries.
2791
 
 
 
2597
    
2792
2598
    # New type for defining tokens, syntax, and semantics all-in-one
2793
2599
    Token = collections.namedtuple("Token", (
2794
2600
        "regexp",  # To match token; if "value" is not None, must have
2827
2633
                           frozenset((token_year, token_month,
2828
2634
                                      token_day, token_time,
2829
2635
                                      token_week)))
2830
 
    # Define starting values:
2831
 
    # Value so far
2832
 
    value = datetime.timedelta()
 
2636
    # Define starting values
 
2637
    value = datetime.timedelta() # Value so far
2833
2638
    found_token = None
2834
 
    # Following valid tokens
2835
 
    followers = frozenset((token_duration, ))
2836
 
    # String left to parse
2837
 
    s = duration
 
2639
    followers = frozenset((token_duration, )) # Following valid tokens
 
2640
    s = duration                # String left to parse
2838
2641
    # Loop until end token is found
2839
2642
    while found_token is not token_end:
2840
2643
        # Search for any currently valid tokens
2864
2667
 
2865
2668
def string_to_delta(interval):
2866
2669
    """Parse a string and return a datetime.timedelta
2867
 
 
2868
 
    >>> string_to_delta('7d') == datetime.timedelta(7)
2869
 
    True
2870
 
    >>> string_to_delta('60s') == datetime.timedelta(0, 60)
2871
 
    True
2872
 
    >>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2873
 
    True
2874
 
    >>> string_to_delta('24h') == datetime.timedelta(1)
2875
 
    True
2876
 
    >>> string_to_delta('1w') == datetime.timedelta(7)
2877
 
    True
2878
 
    >>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2879
 
    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)
2880
2683
    """
2881
 
 
 
2684
    
2882
2685
    try:
2883
2686
        return rfc3339_duration_to_delta(interval)
2884
2687
    except ValueError:
2885
2688
        pass
2886
 
 
 
2689
    
2887
2690
    timevalue = datetime.timedelta(0)
2888
2691
    for s in interval.split():
2889
2692
        try:
2907
2710
    return timevalue
2908
2711
 
2909
2712
 
2910
 
def daemon(nochdir=False, noclose=False):
 
2713
def daemon(nochdir = False, noclose = False):
2911
2714
    """See daemon(3).  Standard BSD Unix function.
2912
 
 
 
2715
    
2913
2716
    This should really exist as os.daemon, but it doesn't (yet)."""
2914
2717
    if os.fork():
2915
2718
        sys.exit()
2933
2736
 
2934
2737
 
2935
2738
def main():
2936
 
 
 
2739
    
2937
2740
    ##################################################################
2938
2741
    # Parsing of options, both command line and config file
2939
 
 
 
2742
    
2940
2743
    parser = argparse.ArgumentParser()
2941
2744
    parser.add_argument("-v", "--version", action="version",
2942
 
                        version="%(prog)s {}".format(version),
 
2745
                        version = "%(prog)s {}".format(version),
2943
2746
                        help="show version number and exit")
2944
2747
    parser.add_argument("-i", "--interface", metavar="IF",
2945
2748
                        help="Bind to interface IF")
2981
2784
    parser.add_argument("--no-zeroconf", action="store_false",
2982
2785
                        dest="zeroconf", help="Do not use Zeroconf",
2983
2786
                        default=None)
2984
 
 
 
2787
    
2985
2788
    options = parser.parse_args()
2986
 
 
 
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
    
2987
2795
    # Default values for config file for server-global settings
2988
 
    if gnutls.has_rawpk:
2989
 
        priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2990
 
                    ":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2991
 
    else:
2992
 
        priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2993
 
                    ":+SIGN-DSA-SHA256")
2994
 
    server_defaults = {"interface": "",
2995
 
                       "address": "",
2996
 
                       "port": "",
2997
 
                       "debug": "False",
2998
 
                       "priority": priority,
2999
 
                       "servicename": "Mandos",
3000
 
                       "use_dbus": "True",
3001
 
                       "use_ipv6": "True",
3002
 
                       "debuglevel": "",
3003
 
                       "restore": "True",
3004
 
                       "socket": "",
3005
 
                       "statedir": "/var/lib/mandos",
3006
 
                       "foreground": "False",
3007
 
                       "zeroconf": "True",
3008
 
                       }
3009
 
    del priority
3010
 
 
 
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
    
3011
2814
    # Parse config file for server-global settings
3012
 
    server_config = configparser.ConfigParser(server_defaults)
 
2815
    server_config = configparser.SafeConfigParser(server_defaults)
3013
2816
    del server_defaults
3014
2817
    server_config.read(os.path.join(options.configdir, "mandos.conf"))
3015
 
    # Convert the ConfigParser object to a dict
 
2818
    # Convert the SafeConfigParser object to a dict
3016
2819
    server_settings = server_config.defaults()
3017
2820
    # Use the appropriate methods on the non-string config options
3018
 
    for option in ("debug", "use_dbus", "use_ipv6", "restore",
3019
 
                   "foreground", "zeroconf"):
 
2821
    for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
3020
2822
        server_settings[option] = server_config.getboolean("DEFAULT",
3021
2823
                                                           option)
3022
2824
    if server_settings["port"]:
3032
2834
            server_settings["socket"] = os.dup(server_settings
3033
2835
                                               ["socket"])
3034
2836
    del server_config
3035
 
 
 
2837
    
3036
2838
    # Override the settings from the config file with command line
3037
2839
    # options, if set.
3038
2840
    for option in ("interface", "address", "port", "debug",
3056
2858
    if server_settings["debug"]:
3057
2859
        server_settings["foreground"] = True
3058
2860
    # Now we have our good server settings in "server_settings"
3059
 
 
 
2861
    
3060
2862
    ##################################################################
3061
 
 
 
2863
    
3062
2864
    if (not server_settings["zeroconf"]
3063
2865
        and not (server_settings["port"]
3064
2866
                 or server_settings["socket"] != "")):
3065
2867
        parser.error("Needs port or socket to work without Zeroconf")
3066
 
 
 
2868
    
3067
2869
    # For convenience
3068
2870
    debug = server_settings["debug"]
3069
2871
    debuglevel = server_settings["debuglevel"]
3073
2875
                                     stored_state_file)
3074
2876
    foreground = server_settings["foreground"]
3075
2877
    zeroconf = server_settings["zeroconf"]
3076
 
 
 
2878
    
3077
2879
    if debug:
3078
2880
        initlogger(debug, logging.DEBUG)
3079
2881
    else:
3082
2884
        else:
3083
2885
            level = getattr(logging, debuglevel.upper())
3084
2886
            initlogger(debug, level)
3085
 
 
 
2887
    
3086
2888
    if server_settings["servicename"] != "Mandos":
3087
2889
        syslogger.setFormatter(
3088
2890
            logging.Formatter('Mandos ({}) [%(process)d]:'
3089
2891
                              ' %(levelname)s: %(message)s'.format(
3090
2892
                                  server_settings["servicename"])))
3091
 
 
 
2893
    
3092
2894
    # Parse config file with clients
3093
 
    client_config = configparser.ConfigParser(Client.client_defaults)
 
2895
    client_config = configparser.SafeConfigParser(Client
 
2896
                                                  .client_defaults)
3094
2897
    client_config.read(os.path.join(server_settings["configdir"],
3095
2898
                                    "clients.conf"))
3096
 
 
 
2899
    
3097
2900
    global mandos_dbus_service
3098
2901
    mandos_dbus_service = None
3099
 
 
 
2902
    
3100
2903
    socketfd = None
3101
2904
    if server_settings["socket"] != "":
3102
2905
        socketfd = server_settings["socket"]
3118
2921
        except IOError as e:
3119
2922
            logger.error("Could not open file %r", pidfilename,
3120
2923
                         exc_info=e)
3121
 
 
3122
 
    for name, group in (("_mandos", "_mandos"),
3123
 
                        ("mandos", "mandos"),
3124
 
                        ("nobody", "nogroup")):
 
2924
    
 
2925
    for name in ("_mandos", "mandos", "nobody"):
3125
2926
        try:
3126
2927
            uid = pwd.getpwnam(name).pw_uid
3127
 
            gid = pwd.getpwnam(group).pw_gid
 
2928
            gid = pwd.getpwnam(name).pw_gid
3128
2929
            break
3129
2930
        except KeyError:
3130
2931
            continue
3134
2935
    try:
3135
2936
        os.setgid(gid)
3136
2937
        os.setuid(uid)
3137
 
        if debug:
3138
 
            logger.debug("Did setuid/setgid to {}:{}".format(uid,
3139
 
                                                             gid))
3140
2938
    except OSError as error:
3141
 
        logger.warning("Failed to setuid/setgid to {}:{}: {}"
3142
 
                       .format(uid, gid, os.strerror(error.errno)))
3143
2939
        if error.errno != errno.EPERM:
3144
2940
            raise
3145
 
 
 
2941
    
3146
2942
    if debug:
3147
2943
        # Enable all possible GnuTLS debugging
3148
 
 
 
2944
        
3149
2945
        # "Use a log level over 10 to enable all debugging options."
3150
2946
        # - GnuTLS manual
3151
2947
        gnutls.global_set_log_level(11)
3152
 
 
 
2948
        
3153
2949
        @gnutls.log_func
3154
2950
        def debug_gnutls(level, string):
3155
2951
            logger.debug("GnuTLS: %s", string[:-1])
3156
 
 
 
2952
        
3157
2953
        gnutls.global_set_log_function(debug_gnutls)
3158
 
 
 
2954
        
3159
2955
        # Redirect stdin so all checkers get /dev/null
3160
2956
        null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3161
2957
        os.dup2(null, sys.stdin.fileno())
3162
2958
        if null > 2:
3163
2959
            os.close(null)
3164
 
 
 
2960
    
3165
2961
    # Need to fork before connecting to D-Bus
3166
2962
    if not foreground:
3167
2963
        # Close all input and output, do double fork, etc.
3168
2964
        daemon()
3169
 
 
3170
 
    if gi.version_info < (3, 10, 2):
3171
 
        # multiprocessing will use threads, so before we use GLib we
3172
 
        # need to inform GLib that threads will be used.
3173
 
        GLib.threads_init()
3174
 
 
 
2965
    
 
2966
    # multiprocessing will use threads, so before we use gobject we
 
2967
    # need to inform gobject that threads will be used.
 
2968
    gobject.threads_init()
 
2969
    
3175
2970
    global main_loop
3176
2971
    # From the Avahi example code
3177
2972
    DBusGMainLoop(set_as_default=True)
3178
 
    main_loop = GLib.MainLoop()
 
2973
    main_loop = gobject.MainLoop()
3179
2974
    bus = dbus.SystemBus()
3180
2975
    # End of Avahi example code
3181
2976
    if use_dbus:
3194
2989
    if zeroconf:
3195
2990
        protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3196
2991
        service = AvahiServiceToSyslog(
3197
 
            name=server_settings["servicename"],
3198
 
            servicetype="_mandos._tcp",
3199
 
            protocol=protocol,
3200
 
            bus=bus)
 
2992
            name = server_settings["servicename"],
 
2993
            servicetype = "_mandos._tcp",
 
2994
            protocol = protocol,
 
2995
            bus = bus)
3201
2996
        if server_settings["interface"]:
3202
2997
            service.interface = if_nametoindex(
3203
2998
                server_settings["interface"].encode("utf-8"))
3204
 
 
 
2999
    
3205
3000
    global multiprocessing_manager
3206
3001
    multiprocessing_manager = multiprocessing.Manager()
3207
 
 
 
3002
    
3208
3003
    client_class = Client
3209
3004
    if use_dbus:
3210
 
        client_class = functools.partial(ClientDBus, bus=bus)
3211
 
 
 
3005
        client_class = functools.partial(ClientDBus, bus = bus)
 
3006
    
3212
3007
    client_settings = Client.config_parser(client_config)
3213
3008
    old_client_settings = {}
3214
3009
    clients_data = {}
3215
 
 
 
3010
    
3216
3011
    # This is used to redirect stdout and stderr for checker processes
3217
3012
    global wnull
3218
 
    wnull = open(os.devnull, "w")  # A writable /dev/null
 
3013
    wnull = open(os.devnull, "w") # A writable /dev/null
3219
3014
    # Only used if server is running in foreground but not in debug
3220
3015
    # mode
3221
3016
    if debug or not foreground:
3222
3017
        wnull.close()
3223
 
 
 
3018
    
3224
3019
    # Get client data and settings from last running state.
3225
3020
    if server_settings["restore"]:
3226
3021
        try:
3227
3022
            with open(stored_state_path, "rb") as stored_state:
3228
 
                if sys.version_info.major == 2:
3229
 
                    clients_data, old_client_settings = pickle.load(
3230
 
                        stored_state)
3231
 
                else:
3232
 
                    bytes_clients_data, bytes_old_client_settings = (
3233
 
                        pickle.load(stored_state, encoding="bytes"))
3234
 
                    #   Fix bytes to strings
3235
 
                    #  clients_data
3236
 
                    # .keys()
3237
 
                    clients_data = {(key.decode("utf-8")
3238
 
                                     if isinstance(key, bytes)
3239
 
                                     else key): value
3240
 
                                    for key, value in
3241
 
                                    bytes_clients_data.items()}
3242
 
                    del bytes_clients_data
3243
 
                    for key in clients_data:
3244
 
                        value = {(k.decode("utf-8")
3245
 
                                  if isinstance(k, bytes) else k): v
3246
 
                                 for k, v in
3247
 
                                 clients_data[key].items()}
3248
 
                        clients_data[key] = value
3249
 
                        # .client_structure
3250
 
                        value["client_structure"] = [
3251
 
                            (s.decode("utf-8")
3252
 
                             if isinstance(s, bytes)
3253
 
                             else s) for s in
3254
 
                            value["client_structure"]]
3255
 
                        # .name, .host, and .checker_command
3256
 
                        for k in ("name", "host", "checker_command"):
3257
 
                            if isinstance(value[k], bytes):
3258
 
                                value[k] = value[k].decode("utf-8")
3259
 
                        if "key_id" not in value:
3260
 
                            value["key_id"] = ""
3261
 
                        elif "fingerprint" not in value:
3262
 
                            value["fingerprint"] = ""
3263
 
                    #  old_client_settings
3264
 
                    # .keys()
3265
 
                    old_client_settings = {
3266
 
                        (key.decode("utf-8")
3267
 
                         if isinstance(key, bytes)
3268
 
                         else key): value
3269
 
                        for key, value in
3270
 
                        bytes_old_client_settings.items()}
3271
 
                    del bytes_old_client_settings
3272
 
                    # .host and .checker_command
3273
 
                    for value in old_client_settings.values():
3274
 
                        for attribute in ("host", "checker_command"):
3275
 
                            if isinstance(value[attribute], bytes):
3276
 
                                value[attribute] = (value[attribute]
3277
 
                                                    .decode("utf-8"))
 
3023
                clients_data, old_client_settings = pickle.load(
 
3024
                    stored_state)
3278
3025
            os.remove(stored_state_path)
3279
3026
        except IOError as e:
3280
3027
            if e.errno == errno.ENOENT:
3288
3035
            logger.warning("Could not load persistent state: "
3289
3036
                           "EOFError:",
3290
3037
                           exc_info=e)
3291
 
 
 
3038
    
3292
3039
    with PGPEngine() as pgp:
3293
3040
        for client_name, client in clients_data.items():
3294
3041
            # Skip removed clients
3295
3042
            if client_name not in client_settings:
3296
3043
                continue
3297
 
 
 
3044
            
3298
3045
            # Decide which value to use after restoring saved state.
3299
3046
            # We have three different values: Old config file,
3300
3047
            # new config file, and saved state.
3311
3058
                        client[name] = value
3312
3059
                except KeyError:
3313
3060
                    pass
3314
 
 
 
3061
            
3315
3062
            # Clients who has passed its expire date can still be
3316
3063
            # enabled if its last checker was successful.  A Client
3317
3064
            # whose checker succeeded before we stored its state is
3350
3097
                    client_name))
3351
3098
                client["secret"] = (client_settings[client_name]
3352
3099
                                    ["secret"])
3353
 
 
 
3100
    
3354
3101
    # Add/remove clients based on new changes made to config
3355
3102
    for client_name in (set(old_client_settings)
3356
3103
                        - set(client_settings)):
3358
3105
    for client_name in (set(client_settings)
3359
3106
                        - set(old_client_settings)):
3360
3107
        clients_data[client_name] = client_settings[client_name]
3361
 
 
 
3108
    
3362
3109
    # Create all client objects
3363
3110
    for client_name, client in clients_data.items():
3364
3111
        tcp_server.clients[client_name] = client_class(
3365
 
            name=client_name,
3366
 
            settings=client,
3367
 
            server_settings=server_settings)
3368
 
 
 
3112
            name = client_name,
 
3113
            settings = client,
 
3114
            server_settings = server_settings)
 
3115
    
3369
3116
    if not tcp_server.clients:
3370
3117
        logger.warning("No clients defined")
3371
 
 
 
3118
    
3372
3119
    if not foreground:
3373
3120
        if pidfile is not None:
3374
3121
            pid = os.getpid()
3380
3127
                             pidfilename, pid)
3381
3128
        del pidfile
3382
3129
        del pidfilename
3383
 
 
3384
 
    for termsig in (signal.SIGHUP, signal.SIGTERM):
3385
 
        GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3386
 
                             lambda: main_loop.quit() and False)
3387
 
 
 
3130
    
 
3131
    signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
 
3132
    signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
 
3133
    
3388
3134
    if use_dbus:
3389
 
 
 
3135
        
3390
3136
        @alternate_dbus_interfaces(
3391
 
            {"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
 
3137
            { "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3392
3138
        class MandosDBusService(DBusObjectWithObjectManager):
3393
3139
            """A D-Bus proxy object"""
3394
 
 
 
3140
            
3395
3141
            def __init__(self):
3396
3142
                dbus.service.Object.__init__(self, bus, "/")
3397
 
 
 
3143
            
3398
3144
            _interface = "se.recompile.Mandos"
3399
 
 
 
3145
            
3400
3146
            @dbus.service.signal(_interface, signature="o")
3401
3147
            def ClientAdded(self, objpath):
3402
3148
                "D-Bus signal"
3403
3149
                pass
3404
 
 
 
3150
            
3405
3151
            @dbus.service.signal(_interface, signature="ss")
3406
 
            def ClientNotFound(self, key_id, address):
 
3152
            def ClientNotFound(self, fingerprint, address):
3407
3153
                "D-Bus signal"
3408
3154
                pass
3409
 
 
 
3155
            
3410
3156
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
3411
3157
                               "true"})
3412
3158
            @dbus.service.signal(_interface, signature="os")
3413
3159
            def ClientRemoved(self, objpath, name):
3414
3160
                "D-Bus signal"
3415
3161
                pass
3416
 
 
 
3162
            
3417
3163
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
3418
3164
                               "true"})
3419
3165
            @dbus.service.method(_interface, out_signature="ao")
3420
3166
            def GetAllClients(self):
3421
3167
                "D-Bus method"
3422
3168
                return dbus.Array(c.dbus_object_path for c in
3423
 
                                  tcp_server.clients.values())
3424
 
 
 
3169
                                  tcp_server.clients.itervalues())
 
3170
            
3425
3171
            @dbus_annotations({"org.freedesktop.DBus.Deprecated":
3426
3172
                               "true"})
3427
3173
            @dbus.service.method(_interface,
3429
3175
            def GetAllClientsWithProperties(self):
3430
3176
                "D-Bus method"
3431
3177
                return dbus.Dictionary(
3432
 
                    {c.dbus_object_path: c.GetAll(
 
3178
                    { c.dbus_object_path: c.GetAll(
3433
3179
                        "se.recompile.Mandos.Client")
3434
 
                     for c in tcp_server.clients.values()},
 
3180
                      for c in tcp_server.clients.itervalues() },
3435
3181
                    signature="oa{sv}")
3436
 
 
 
3182
            
3437
3183
            @dbus.service.method(_interface, in_signature="o")
3438
3184
            def RemoveClient(self, object_path):
3439
3185
                "D-Bus method"
3440
 
                for c in tcp_server.clients.values():
 
3186
                for c in tcp_server.clients.itervalues():
3441
3187
                    if c.dbus_object_path == object_path:
3442
3188
                        del tcp_server.clients[c.name]
3443
3189
                        c.remove_from_connection()
3447
3193
                        self.client_removed_signal(c)
3448
3194
                        return
3449
3195
                raise KeyError(object_path)
3450
 
 
 
3196
            
3451
3197
            del _interface
3452
 
 
 
3198
            
3453
3199
            @dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3454
 
                                 out_signature="a{oa{sa{sv}}}")
 
3200
                                 out_signature = "a{oa{sa{sv}}}")
3455
3201
            def GetManagedObjects(self):
3456
3202
                """D-Bus method"""
3457
3203
                return dbus.Dictionary(
3458
 
                    {client.dbus_object_path:
3459
 
                     dbus.Dictionary(
3460
 
                         {interface: client.GetAll(interface)
3461
 
                          for interface in
3462
 
                          client._get_all_interface_names()})
3463
 
                     for client in tcp_server.clients.values()})
3464
 
 
 
3204
                    { client.dbus_object_path:
 
3205
                      dbus.Dictionary(
 
3206
                          { interface: client.GetAll(interface)
 
3207
                            for interface in
 
3208
                                 client._get_all_interface_names()})
 
3209
                      for client in tcp_server.clients.values()})
 
3210
            
3465
3211
            def client_added_signal(self, client):
3466
3212
                """Send the new standard signal and the old signal"""
3467
3213
                if use_dbus:
3469
3215
                    self.InterfacesAdded(
3470
3216
                        client.dbus_object_path,
3471
3217
                        dbus.Dictionary(
3472
 
                            {interface: client.GetAll(interface)
3473
 
                             for interface in
3474
 
                             client._get_all_interface_names()}))
 
3218
                            { interface: client.GetAll(interface)
 
3219
                              for interface in
 
3220
                              client._get_all_interface_names()}))
3475
3221
                    # Old signal
3476
3222
                    self.ClientAdded(client.dbus_object_path)
3477
 
 
 
3223
            
3478
3224
            def client_removed_signal(self, client):
3479
3225
                """Send the new standard signal and the old signal"""
3480
3226
                if use_dbus:
3485
3231
                    # Old signal
3486
3232
                    self.ClientRemoved(client.dbus_object_path,
3487
3233
                                       client.name)
3488
 
 
 
3234
        
3489
3235
        mandos_dbus_service = MandosDBusService()
3490
 
 
3491
 
    # Save modules to variables to exempt the modules from being
3492
 
    # unloaded before the function registered with atexit() is run.
3493
 
    mp = multiprocessing
3494
 
    wn = wnull
3495
 
 
 
3236
    
3496
3237
    def cleanup():
3497
3238
        "Cleanup function; run on exit"
3498
3239
        if zeroconf:
3499
3240
            service.cleanup()
3500
 
 
3501
 
        mp.active_children()
3502
 
        wn.close()
 
3241
        
 
3242
        multiprocessing.active_children()
 
3243
        wnull.close()
3503
3244
        if not (tcp_server.clients or client_settings):
3504
3245
            return
3505
 
 
 
3246
        
3506
3247
        # Store client before exiting. Secrets are encrypted with key
3507
3248
        # based on what config file has. If config file is
3508
3249
        # removed/edited, old secret will thus be unrecovable.
3509
3250
        clients = {}
3510
3251
        with PGPEngine() as pgp:
3511
 
            for client in tcp_server.clients.values():
 
3252
            for client in tcp_server.clients.itervalues():
3512
3253
                key = client_settings[client.name]["secret"]
3513
3254
                client.encrypted_secret = pgp.encrypt(client.secret,
3514
3255
                                                      key)
3515
3256
                client_dict = {}
3516
 
 
 
3257
                
3517
3258
                # A list of attributes that can not be pickled
3518
3259
                # + secret.
3519
 
                exclude = {"bus", "changedstate", "secret",
3520
 
                           "checker", "server_settings"}
 
3260
                exclude = { "bus", "changedstate", "secret",
 
3261
                            "checker", "server_settings" }
3521
3262
                for name, typ in inspect.getmembers(dbus.service
3522
3263
                                                    .Object):
3523
3264
                    exclude.add(name)
3524
 
 
 
3265
                
3525
3266
                client_dict["encrypted_secret"] = (client
3526
3267
                                                   .encrypted_secret)
3527
3268
                for attr in client.client_structure:
3528
3269
                    if attr not in exclude:
3529
3270
                        client_dict[attr] = getattr(client, attr)
3530
 
 
 
3271
                
3531
3272
                clients[client.name] = client_dict
3532
3273
                del client_settings[client.name]["secret"]
3533
 
 
 
3274
        
3534
3275
        try:
3535
3276
            with tempfile.NamedTemporaryFile(
3536
3277
                    mode='wb',
3538
3279
                    prefix='clients-',
3539
3280
                    dir=os.path.dirname(stored_state_path),
3540
3281
                    delete=False) as stored_state:
3541
 
                pickle.dump((clients, client_settings), stored_state,
3542
 
                            protocol=2)
 
3282
                pickle.dump((clients, client_settings), stored_state)
3543
3283
                tempname = stored_state.name
3544
3284
            os.rename(tempname, stored_state_path)
3545
3285
        except (IOError, OSError) as e:
3555
3295
                logger.warning("Could not save persistent state:",
3556
3296
                               exc_info=e)
3557
3297
                raise
3558
 
 
 
3298
        
3559
3299
        # Delete all clients, and settings from config
3560
3300
        while tcp_server.clients:
3561
3301
            name, client = tcp_server.clients.popitem()
3567
3307
            if use_dbus:
3568
3308
                mandos_dbus_service.client_removed_signal(client)
3569
3309
        client_settings.clear()
3570
 
 
 
3310
    
3571
3311
    atexit.register(cleanup)
3572
 
 
3573
 
    for client in tcp_server.clients.values():
 
3312
    
 
3313
    for client in tcp_server.clients.itervalues():
3574
3314
        if use_dbus:
3575
3315
            # Emit D-Bus signal for adding
3576
3316
            mandos_dbus_service.client_added_signal(client)
3577
3317
        # Need to initiate checking of clients
3578
3318
        if client.enabled:
3579
3319
            client.init_checker()
3580
 
 
 
3320
    
3581
3321
    tcp_server.enable()
3582
3322
    tcp_server.server_activate()
3583
 
 
 
3323
    
3584
3324
    # Find out what port we got
3585
3325
    if zeroconf:
3586
3326
        service.port = tcp_server.socket.getsockname()[1]
3591
3331
    else:                       # IPv4
3592
3332
        logger.info("Now listening on address %r, port %d",
3593
3333
                    *tcp_server.socket.getsockname())
3594
 
 
3595
 
    # service.interface = tcp_server.socket.getsockname()[3]
3596
 
 
 
3334
    
 
3335
    #service.interface = tcp_server.socket.getsockname()[3]
 
3336
    
3597
3337
    try:
3598
3338
        if zeroconf:
3599
3339
            # From the Avahi example code
3604
3344
                cleanup()
3605
3345
                sys.exit(1)
3606
3346
            # End of Avahi example code
3607
 
 
3608
 
        GLib.io_add_watch(
3609
 
            GLib.IOChannel.unix_new(tcp_server.fileno()),
3610
 
            GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3611
 
            lambda *args, **kwargs: (tcp_server.handle_request
3612
 
                                     (*args[2:], **kwargs) or True))
3613
 
 
 
3347
        
 
3348
        gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
 
3349
                             lambda *args, **kwargs:
 
3350
                             (tcp_server.handle_request
 
3351
                              (*args[2:], **kwargs) or True))
 
3352
        
3614
3353
        logger.debug("Starting main loop")
3615
3354
        main_loop.run()
3616
3355
    except AvahiError as error:
3625
3364
    # Must run before the D-Bus bus name gets deregistered
3626
3365
    cleanup()
3627
3366
 
3628
 
 
3629
 
def should_only_run_tests():
3630
 
    parser = argparse.ArgumentParser(add_help=False)
3631
 
    parser.add_argument("--check", action='store_true')
3632
 
    args, unknown_args = parser.parse_known_args()
3633
 
    run_tests = args.check
3634
 
    if run_tests:
3635
 
        # Remove --check argument from sys.argv
3636
 
        sys.argv[1:] = unknown_args
3637
 
    return run_tests
3638
 
 
3639
 
# Add all tests from doctest strings
3640
 
def load_tests(loader, tests, none):
3641
 
    import doctest
3642
 
    tests.addTests(doctest.DocTestSuite())
3643
 
    return tests
3644
3367
 
3645
3368
if __name__ == '__main__':
3646
 
    try:
3647
 
        if should_only_run_tests():
3648
 
            # Call using ./mandos --check [--verbose]
3649
 
            unittest.main()
3650
 
        else:
3651
 
            main()
3652
 
    finally:
3653
 
        logging.shutdown()
 
3369
    main()