/mandos/release

To get this branch, use:
bzr branch http://bzr.recompile.se/loggerhead/mandos/release

« back to all changes in this revision

Viewing changes to mandos

  • Committer: Teddy Hogeborn
  • Date: 2014-05-12 21:02:38 UTC
  • mto: (237.7.272 trunk)
  • mto: This revision was merged to the branch mainline in revision 313.
  • Revision ID: teddy@recompile.se-20140512210238-t6o8b1ieeojrs0xl
Do not run self-tests when building arch-indep Debian package.

* debian/rules (override_dh_auto_test-arch): New; does nothing.

Show diffs side-by-side

added added

removed removed

Lines of Context:
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
# 
13
13
# Everything else is
14
 
# Copyright © 2008,2009 Teddy Hogeborn
15
 
# Copyright © 2008,2009 Björn Påhlsson
 
14
# Copyright © 2008-2014 Teddy Hogeborn
 
15
# Copyright © 2008-2014 Björn Påhlsson
16
16
# 
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
28
28
# along with this program.  If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
30
# 
31
 
# Contact the authors at <mandos@fukt.bsnet.se>.
 
31
# Contact the authors at <mandos@recompile.se>.
32
32
# 
33
33
 
34
 
from __future__ import division, with_statement, absolute_import
 
34
from __future__ import (division, absolute_import, print_function,
 
35
                        unicode_literals)
 
36
 
 
37
from future_builtins import *
35
38
 
36
39
import SocketServer as socketserver
37
40
import socket
38
 
import optparse
 
41
import argparse
39
42
import datetime
40
43
import errno
41
44
import gnutls.crypto
61
64
import functools
62
65
import cPickle as pickle
63
66
import multiprocessing
 
67
import types
 
68
import binascii
 
69
import tempfile
 
70
import itertools
 
71
import collections
64
72
 
65
73
import dbus
66
74
import dbus.service
80
88
    except ImportError:
81
89
        SO_BINDTODEVICE = None
82
90
 
83
 
 
84
 
version = "1.0.14"
85
 
 
86
 
#logger = logging.getLogger(u'mandos')
87
 
logger = logging.Logger(u'mandos')
88
 
syslogger = (logging.handlers.SysLogHandler
89
 
             (facility = logging.handlers.SysLogHandler.LOG_DAEMON,
90
 
              address = "/dev/log"))
91
 
syslogger.setFormatter(logging.Formatter
92
 
                       (u'Mandos [%(process)d]: %(levelname)s:'
93
 
                        u' %(message)s'))
94
 
logger.addHandler(syslogger)
95
 
 
96
 
console = logging.StreamHandler()
97
 
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
98
 
                                       u' %(levelname)s:'
99
 
                                       u' %(message)s'))
100
 
logger.addHandler(console)
 
91
version = "1.6.5"
 
92
stored_state_file = "clients.pickle"
 
93
 
 
94
logger = logging.getLogger()
 
95
syslogger = None
 
96
 
 
97
try:
 
98
    if_nametoindex = (ctypes.cdll.LoadLibrary
 
99
                      (ctypes.util.find_library("c"))
 
100
                      .if_nametoindex)
 
101
except (OSError, AttributeError):
 
102
    def if_nametoindex(interface):
 
103
        "Get an interface index the hard way, i.e. using fcntl()"
 
104
        SIOCGIFINDEX = 0x8933  # From /usr/include/linux/sockios.h
 
105
        with contextlib.closing(socket.socket()) as s:
 
106
            ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
 
107
                                struct.pack(str("16s16x"),
 
108
                                            interface))
 
109
        interface_index = struct.unpack(str("I"),
 
110
                                        ifreq[16:20])[0]
 
111
        return interface_index
 
112
 
 
113
 
 
114
def initlogger(debug, level=logging.WARNING):
 
115
    """init logger and add loglevel"""
 
116
    
 
117
    syslogger = (logging.handlers.SysLogHandler
 
118
                 (facility =
 
119
                  logging.handlers.SysLogHandler.LOG_DAEMON,
 
120
                  address = str("/dev/log")))
 
121
    syslogger.setFormatter(logging.Formatter
 
122
                           ('Mandos [%(process)d]: %(levelname)s:'
 
123
                            ' %(message)s'))
 
124
    logger.addHandler(syslogger)
 
125
    
 
126
    if debug:
 
127
        console = logging.StreamHandler()
 
128
        console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
 
129
                                               ' [%(process)d]:'
 
130
                                               ' %(levelname)s:'
 
131
                                               ' %(message)s'))
 
132
        logger.addHandler(console)
 
133
    logger.setLevel(level)
 
134
 
 
135
 
 
136
class PGPError(Exception):
 
137
    """Exception if encryption/decryption fails"""
 
138
    pass
 
139
 
 
140
 
 
141
class PGPEngine(object):
 
142
    """A simple class for OpenPGP symmetric encryption & decryption"""
 
143
    def __init__(self):
 
144
        self.tempdir = tempfile.mkdtemp(prefix="mandos-")
 
145
        self.gnupgargs = ['--batch',
 
146
                          '--home', self.tempdir,
 
147
                          '--force-mdc',
 
148
                          '--quiet',
 
149
                          '--no-use-agent']
 
150
    
 
151
    def __enter__(self):
 
152
        return self
 
153
    
 
154
    def __exit__(self, exc_type, exc_value, traceback):
 
155
        self._cleanup()
 
156
        return False
 
157
    
 
158
    def __del__(self):
 
159
        self._cleanup()
 
160
    
 
161
    def _cleanup(self):
 
162
        if self.tempdir is not None:
 
163
            # Delete contents of tempdir
 
164
            for root, dirs, files in os.walk(self.tempdir,
 
165
                                             topdown = False):
 
166
                for filename in files:
 
167
                    os.remove(os.path.join(root, filename))
 
168
                for dirname in dirs:
 
169
                    os.rmdir(os.path.join(root, dirname))
 
170
            # Remove tempdir
 
171
            os.rmdir(self.tempdir)
 
172
            self.tempdir = None
 
173
    
 
174
    def password_encode(self, password):
 
175
        # Passphrase can not be empty and can not contain newlines or
 
176
        # NUL bytes.  So we prefix it and hex encode it.
 
177
        encoded = b"mandos" + binascii.hexlify(password)
 
178
        if len(encoded) > 2048:
 
179
            # GnuPG can't handle long passwords, so encode differently
 
180
            encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
 
181
                       .replace(b"\n", b"\\n")
 
182
                       .replace(b"\0", b"\\x00"))
 
183
        return encoded
 
184
    
 
185
    def encrypt(self, data, password):
 
186
        passphrase = self.password_encode(password)
 
187
        with tempfile.NamedTemporaryFile(dir=self.tempdir
 
188
                                         ) as passfile:
 
189
            passfile.write(passphrase)
 
190
            passfile.flush()
 
191
            proc = subprocess.Popen(['gpg', '--symmetric',
 
192
                                     '--passphrase-file',
 
193
                                     passfile.name]
 
194
                                    + self.gnupgargs,
 
195
                                    stdin = subprocess.PIPE,
 
196
                                    stdout = subprocess.PIPE,
 
197
                                    stderr = subprocess.PIPE)
 
198
            ciphertext, err = proc.communicate(input = data)
 
199
        if proc.returncode != 0:
 
200
            raise PGPError(err)
 
201
        return ciphertext
 
202
    
 
203
    def decrypt(self, data, password):
 
204
        passphrase = self.password_encode(password)
 
205
        with tempfile.NamedTemporaryFile(dir = self.tempdir
 
206
                                         ) as passfile:
 
207
            passfile.write(passphrase)
 
208
            passfile.flush()
 
209
            proc = subprocess.Popen(['gpg', '--decrypt',
 
210
                                     '--passphrase-file',
 
211
                                     passfile.name]
 
212
                                    + self.gnupgargs,
 
213
                                    stdin = subprocess.PIPE,
 
214
                                    stdout = subprocess.PIPE,
 
215
                                    stderr = subprocess.PIPE)
 
216
            decrypted_plaintext, err = proc.communicate(input
 
217
                                                        = data)
 
218
        if proc.returncode != 0:
 
219
            raise PGPError(err)
 
220
        return decrypted_plaintext
 
221
 
101
222
 
102
223
class AvahiError(Exception):
103
224
    def __init__(self, value, *args, **kwargs):
119
240
    Attributes:
120
241
    interface: integer; avahi.IF_UNSPEC or an interface index.
121
242
               Used to optionally bind to the specified interface.
122
 
    name: string; Example: u'Mandos'
123
 
    type: string; Example: u'_mandos._tcp'.
124
 
                  See <http://www.dns-sd.org/ServiceTypes.html>
 
243
    name: string; Example: 'Mandos'
 
244
    type: string; Example: '_mandos._tcp'.
 
245
     See <https://www.iana.org/assignments/service-names-port-numbers>
125
246
    port: integer; what port to announce
126
247
    TXT: list of strings; TXT record for the service
127
248
    domain: string; Domain to publish on, default to .local if empty.
133
254
    server: D-Bus Server
134
255
    bus: dbus.SystemBus()
135
256
    """
 
257
    
136
258
    def __init__(self, interface = avahi.IF_UNSPEC, name = None,
137
259
                 servicetype = None, port = None, TXT = None,
138
 
                 domain = u"", host = u"", max_renames = 32768,
 
260
                 domain = "", host = "", max_renames = 32768,
139
261
                 protocol = avahi.PROTO_UNSPEC, bus = None):
140
262
        self.interface = interface
141
263
        self.name = name
150
272
        self.group = None       # our entry group
151
273
        self.server = None
152
274
        self.bus = bus
 
275
        self.entry_group_state_changed_match = None
 
276
    
153
277
    def rename(self):
154
278
        """Derived from the Avahi example code"""
155
279
        if self.rename_count >= self.max_renames:
156
 
            logger.critical(u"No suitable Zeroconf service name found"
157
 
                            u" after %i retries, exiting.",
 
280
            logger.critical("No suitable Zeroconf service name found"
 
281
                            " after %i retries, exiting.",
158
282
                            self.rename_count)
159
 
            raise AvahiServiceError(u"Too many renames")
160
 
        self.name = self.server.GetAlternativeServiceName(self.name)
161
 
        logger.info(u"Changing Zeroconf service name to %r ...",
162
 
                    unicode(self.name))
163
 
        syslogger.setFormatter(logging.Formatter
164
 
                               (u'Mandos (%s) [%%(process)d]:'
165
 
                                u' %%(levelname)s: %%(message)s'
166
 
                                % self.name))
 
283
            raise AvahiServiceError("Too many renames")
 
284
        self.name = unicode(self.server
 
285
                            .GetAlternativeServiceName(self.name))
 
286
        logger.info("Changing Zeroconf service name to %r ...",
 
287
                    self.name)
167
288
        self.remove()
168
 
        self.add()
 
289
        try:
 
290
            self.add()
 
291
        except dbus.exceptions.DBusException as error:
 
292
            logger.critical("D-Bus Exception", exc_info=error)
 
293
            self.cleanup()
 
294
            os._exit(1)
169
295
        self.rename_count += 1
 
296
    
170
297
    def remove(self):
171
298
        """Derived from the Avahi example code"""
 
299
        if self.entry_group_state_changed_match is not None:
 
300
            self.entry_group_state_changed_match.remove()
 
301
            self.entry_group_state_changed_match = None
172
302
        if self.group is not None:
173
303
            self.group.Reset()
 
304
    
174
305
    def add(self):
175
306
        """Derived from the Avahi example code"""
 
307
        self.remove()
176
308
        if self.group is None:
177
309
            self.group = dbus.Interface(
178
310
                self.bus.get_object(avahi.DBUS_NAME,
179
311
                                    self.server.EntryGroupNew()),
180
312
                avahi.DBUS_INTERFACE_ENTRY_GROUP)
181
 
            self.group.connect_to_signal('StateChanged',
182
 
                                         self
183
 
                                         .entry_group_state_changed)
184
 
        logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
 
313
        self.entry_group_state_changed_match = (
 
314
            self.group.connect_to_signal(
 
315
                'StateChanged', self.entry_group_state_changed))
 
316
        logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
185
317
                     self.name, self.type)
186
318
        self.group.AddService(
187
319
            self.interface,
192
324
            dbus.UInt16(self.port),
193
325
            avahi.string_array_to_txt_array(self.TXT))
194
326
        self.group.Commit()
 
327
    
195
328
    def entry_group_state_changed(self, state, error):
196
329
        """Derived from the Avahi example code"""
197
 
        logger.debug(u"Avahi state change: %i", state)
 
330
        logger.debug("Avahi entry group state change: %i", state)
198
331
        
199
332
        if state == avahi.ENTRY_GROUP_ESTABLISHED:
200
 
            logger.debug(u"Zeroconf service established.")
 
333
            logger.debug("Zeroconf service established.")
201
334
        elif state == avahi.ENTRY_GROUP_COLLISION:
202
 
            logger.warning(u"Zeroconf service name collision.")
 
335
            logger.info("Zeroconf service name collision.")
203
336
            self.rename()
204
337
        elif state == avahi.ENTRY_GROUP_FAILURE:
205
 
            logger.critical(u"Avahi: Error in group state changed %s",
 
338
            logger.critical("Avahi: Error in group state changed %s",
206
339
                            unicode(error))
207
 
            raise AvahiGroupError(u"State changed: %s"
208
 
                                  % unicode(error))
 
340
            raise AvahiGroupError("State changed: {0!s}"
 
341
                                  .format(error))
 
342
    
209
343
    def cleanup(self):
210
344
        """Derived from the Avahi example code"""
211
345
        if self.group is not None:
212
 
            self.group.Free()
 
346
            try:
 
347
                self.group.Free()
 
348
            except (dbus.exceptions.UnknownMethodException,
 
349
                    dbus.exceptions.DBusException):
 
350
                pass
213
351
            self.group = None
214
 
    def server_state_changed(self, state):
 
352
        self.remove()
 
353
    
 
354
    def server_state_changed(self, state, error=None):
215
355
        """Derived from the Avahi example code"""
216
 
        if state == avahi.SERVER_COLLISION:
217
 
            logger.error(u"Zeroconf server name collision")
218
 
            self.remove()
 
356
        logger.debug("Avahi server state change: %i", state)
 
357
        bad_states = { avahi.SERVER_INVALID:
 
358
                           "Zeroconf server invalid",
 
359
                       avahi.SERVER_REGISTERING: None,
 
360
                       avahi.SERVER_COLLISION:
 
361
                           "Zeroconf server name collision",
 
362
                       avahi.SERVER_FAILURE:
 
363
                           "Zeroconf server failure" }
 
364
        if state in bad_states:
 
365
            if bad_states[state] is not None:
 
366
                if error is None:
 
367
                    logger.error(bad_states[state])
 
368
                else:
 
369
                    logger.error(bad_states[state] + ": %r", error)
 
370
            self.cleanup()
219
371
        elif state == avahi.SERVER_RUNNING:
220
372
            self.add()
 
373
        else:
 
374
            if error is None:
 
375
                logger.debug("Unknown state: %r", state)
 
376
            else:
 
377
                logger.debug("Unknown state: %r: %r", state, error)
 
378
    
221
379
    def activate(self):
222
380
        """Derived from the Avahi example code"""
223
381
        if self.server is None:
224
382
            self.server = dbus.Interface(
225
383
                self.bus.get_object(avahi.DBUS_NAME,
226
 
                                    avahi.DBUS_PATH_SERVER),
 
384
                                    avahi.DBUS_PATH_SERVER,
 
385
                                    follow_name_owner_changes=True),
227
386
                avahi.DBUS_INTERFACE_SERVER)
228
 
        self.server.connect_to_signal(u"StateChanged",
 
387
        self.server.connect_to_signal("StateChanged",
229
388
                                 self.server_state_changed)
230
389
        self.server_state_changed(self.server.GetState())
231
390
 
232
391
 
 
392
class AvahiServiceToSyslog(AvahiService):
 
393
    def rename(self):
 
394
        """Add the new name to the syslog messages"""
 
395
        ret = AvahiService.rename(self)
 
396
        syslogger.setFormatter(logging.Formatter
 
397
                               ('Mandos ({0}) [%(process)d]:'
 
398
                                ' %(levelname)s: %(message)s'
 
399
                                .format(self.name)))
 
400
        return ret
 
401
 
 
402
 
 
403
def timedelta_to_milliseconds(td):
 
404
    "Convert a datetime.timedelta() to milliseconds"
 
405
    return ((td.days * 24 * 60 * 60 * 1000)
 
406
            + (td.seconds * 1000)
 
407
            + (td.microseconds // 1000))
 
408
 
 
409
 
233
410
class Client(object):
234
411
    """A representation of a client host served by this server.
235
412
    
236
413
    Attributes:
237
 
    name:       string; from the config file, used in log messages and
238
 
                        D-Bus identifiers
 
414
    approved:   bool(); 'None' if not yet approved/disapproved
 
415
    approval_delay: datetime.timedelta(); Time to wait for approval
 
416
    approval_duration: datetime.timedelta(); Duration of one approval
 
417
    checker:    subprocess.Popen(); a running checker process used
 
418
                                    to see if the client lives.
 
419
                                    'None' if no process is running.
 
420
    checker_callback_tag: a gobject event source tag, or None
 
421
    checker_command: string; External command which is run to check
 
422
                     if client lives.  %() expansions are done at
 
423
                     runtime with vars(self) as dict, so that for
 
424
                     instance %(name)s can be used in the command.
 
425
    checker_initiator_tag: a gobject event source tag, or None
 
426
    created:    datetime.datetime(); (UTC) object creation
 
427
    client_structure: Object describing what attributes a client has
 
428
                      and is used for storing the client at exit
 
429
    current_checker_command: string; current running checker_command
 
430
    disable_initiator_tag: a gobject event source tag, or None
 
431
    enabled:    bool()
239
432
    fingerprint: string (40 or 32 hexadecimal digits); used to
240
433
                 uniquely identify the client
241
 
    secret:     bytestring; sent verbatim (over TLS) to client
242
434
    host:       string; available for use by the checker command
243
 
    created:    datetime.datetime(); (UTC) object creation
244
 
    last_enabled: datetime.datetime(); (UTC)
245
 
    enabled:    bool()
 
435
    interval:   datetime.timedelta(); How often to start a new checker
 
436
    last_approval_request: datetime.datetime(); (UTC) or None
246
437
    last_checked_ok: datetime.datetime(); (UTC) or None
 
438
    last_checker_status: integer between 0 and 255 reflecting exit
 
439
                         status of last checker. -1 reflects crashed
 
440
                         checker, -2 means no checker completed yet.
 
441
    last_enabled: datetime.datetime(); (UTC) or None
 
442
    name:       string; from the config file, used in log messages and
 
443
                        D-Bus identifiers
 
444
    secret:     bytestring; sent verbatim (over TLS) to client
247
445
    timeout:    datetime.timedelta(); How long from last_checked_ok
248
446
                                      until this client is disabled
249
 
    interval:   datetime.timedelta(); How often to start a new checker
250
 
    disable_hook:  If set, called by disable() as disable_hook(self)
251
 
    checker:    subprocess.Popen(); a running checker process used
252
 
                                    to see if the client lives.
253
 
                                    'None' if no process is running.
254
 
    checker_initiator_tag: a gobject event source tag, or None
255
 
    disable_initiator_tag: - '' -
256
 
    checker_callback_tag:  - '' -
257
 
    checker_command: string; External command which is run to check if
258
 
                     client lives.  %() expansions are done at
259
 
                     runtime with vars(self) as dict, so that for
260
 
                     instance %(name)s can be used in the command.
261
 
    current_checker_command: string; current running checker_command
262
 
    approved_delay: datetime.timedelta(); Time to wait for approval
263
 
    _approved:   bool(); 'None' if not yet approved/disapproved
264
 
    approved_duration: datetime.timedelta(); Duration of one approval
 
447
    extended_timeout:   extra long timeout when secret has been sent
 
448
    runtime_expansions: Allowed attributes for runtime expansion.
 
449
    expires:    datetime.datetime(); time (UTC) when a client will be
 
450
                disabled, or None
 
451
    server_settings: The server_settings dict from main()
265
452
    """
266
453
    
267
 
    @staticmethod
268
 
    def _timedelta_to_milliseconds(td):
269
 
        "Convert a datetime.timedelta() to milliseconds"
270
 
        return ((td.days * 24 * 60 * 60 * 1000)
271
 
                + (td.seconds * 1000)
272
 
                + (td.microseconds // 1000))
 
454
    runtime_expansions = ("approval_delay", "approval_duration",
 
455
                          "created", "enabled", "expires",
 
456
                          "fingerprint", "host", "interval",
 
457
                          "last_approval_request", "last_checked_ok",
 
458
                          "last_enabled", "name", "timeout")
 
459
    client_defaults = { "timeout": "PT5M",
 
460
                        "extended_timeout": "PT15M",
 
461
                        "interval": "PT2M",
 
462
                        "checker": "fping -q -- %%(host)s",
 
463
                        "host": "",
 
464
                        "approval_delay": "PT0S",
 
465
                        "approval_duration": "PT1S",
 
466
                        "approved_by_default": "True",
 
467
                        "enabled": "True",
 
468
                        }
273
469
    
274
470
    def timeout_milliseconds(self):
275
471
        "Return the 'timeout' attribute in milliseconds"
276
 
        return self._timedelta_to_milliseconds(self.timeout)
 
472
        return timedelta_to_milliseconds(self.timeout)
 
473
    
 
474
    def extended_timeout_milliseconds(self):
 
475
        "Return the 'extended_timeout' attribute in milliseconds"
 
476
        return timedelta_to_milliseconds(self.extended_timeout)
277
477
    
278
478
    def interval_milliseconds(self):
279
479
        "Return the 'interval' attribute in milliseconds"
280
 
        return self._timedelta_to_milliseconds(self.interval)
281
 
 
282
 
    def approved_delay_milliseconds(self):
283
 
        return self._timedelta_to_milliseconds(self.approved_delay)
284
 
    
285
 
    def __init__(self, name = None, disable_hook=None, config=None):
286
 
        """Note: the 'checker' key in 'config' sets the
287
 
        'checker_command' attribute and *not* the 'checker'
288
 
        attribute."""
 
480
        return timedelta_to_milliseconds(self.interval)
 
481
    
 
482
    def approval_delay_milliseconds(self):
 
483
        return timedelta_to_milliseconds(self.approval_delay)
 
484
    
 
485
    @staticmethod
 
486
    def config_parser(config):
 
487
        """Construct a new dict of client settings of this form:
 
488
        { client_name: {setting_name: value, ...}, ...}
 
489
        with exceptions for any special settings as defined above.
 
490
        NOTE: Must be a pure function. Must return the same result
 
491
        value given the same arguments.
 
492
        """
 
493
        settings = {}
 
494
        for client_name in config.sections():
 
495
            section = dict(config.items(client_name))
 
496
            client = settings[client_name] = {}
 
497
            
 
498
            client["host"] = section["host"]
 
499
            # Reformat values from string types to Python types
 
500
            client["approved_by_default"] = config.getboolean(
 
501
                client_name, "approved_by_default")
 
502
            client["enabled"] = config.getboolean(client_name,
 
503
                                                  "enabled")
 
504
            
 
505
            client["fingerprint"] = (section["fingerprint"].upper()
 
506
                                     .replace(" ", ""))
 
507
            if "secret" in section:
 
508
                client["secret"] = section["secret"].decode("base64")
 
509
            elif "secfile" in section:
 
510
                with open(os.path.expanduser(os.path.expandvars
 
511
                                             (section["secfile"])),
 
512
                          "rb") as secfile:
 
513
                    client["secret"] = secfile.read()
 
514
            else:
 
515
                raise TypeError("No secret or secfile for section {0}"
 
516
                                .format(section))
 
517
            client["timeout"] = string_to_delta(section["timeout"])
 
518
            client["extended_timeout"] = string_to_delta(
 
519
                section["extended_timeout"])
 
520
            client["interval"] = string_to_delta(section["interval"])
 
521
            client["approval_delay"] = string_to_delta(
 
522
                section["approval_delay"])
 
523
            client["approval_duration"] = string_to_delta(
 
524
                section["approval_duration"])
 
525
            client["checker_command"] = section["checker"]
 
526
            client["last_approval_request"] = None
 
527
            client["last_checked_ok"] = None
 
528
            client["last_checker_status"] = -2
 
529
        
 
530
        return settings
 
531
    
 
532
    def __init__(self, settings, name = None, server_settings=None):
289
533
        self.name = name
290
 
        if config is None:
291
 
            config = {}
292
 
        logger.debug(u"Creating client %r", self.name)
 
534
        if server_settings is None:
 
535
            server_settings = {}
 
536
        self.server_settings = server_settings
 
537
        # adding all client settings
 
538
        for setting, value in settings.iteritems():
 
539
            setattr(self, setting, value)
 
540
        
 
541
        if self.enabled:
 
542
            if not hasattr(self, "last_enabled"):
 
543
                self.last_enabled = datetime.datetime.utcnow()
 
544
            if not hasattr(self, "expires"):
 
545
                self.expires = (datetime.datetime.utcnow()
 
546
                                + self.timeout)
 
547
        else:
 
548
            self.last_enabled = None
 
549
            self.expires = None
 
550
        
 
551
        logger.debug("Creating client %r", self.name)
293
552
        # Uppercase and remove spaces from fingerprint for later
294
553
        # comparison purposes with return value from the fingerprint()
295
554
        # function
296
 
        self.fingerprint = (config[u"fingerprint"].upper()
297
 
                            .replace(u" ", u""))
298
 
        logger.debug(u"  Fingerprint: %s", self.fingerprint)
299
 
        if u"secret" in config:
300
 
            self.secret = config[u"secret"].decode(u"base64")
301
 
        elif u"secfile" in config:
302
 
            with open(os.path.expanduser(os.path.expandvars
303
 
                                         (config[u"secfile"])),
304
 
                      "rb") as secfile:
305
 
                self.secret = secfile.read()
306
 
        else:
307
 
            #XXX Need to allow secret on demand!
308
 
            raise TypeError(u"No secret or secfile for client %s"
309
 
                            % self.name)
310
 
        self.host = config.get(u"host", u"")
311
 
        self.created = datetime.datetime.utcnow()
312
 
        self.enabled = False
313
 
        self.last_enabled = None
314
 
        self.last_checked_ok = None
315
 
        self.timeout = string_to_delta(config[u"timeout"])
316
 
        self.interval = string_to_delta(config[u"interval"])
317
 
        self.disable_hook = disable_hook
 
555
        logger.debug("  Fingerprint: %s", self.fingerprint)
 
556
        self.created = settings.get("created",
 
557
                                    datetime.datetime.utcnow())
 
558
        
 
559
        # attributes specific for this server instance
318
560
        self.checker = None
319
561
        self.checker_initiator_tag = None
320
562
        self.disable_initiator_tag = None
321
563
        self.checker_callback_tag = None
322
 
        self.checker_command = config[u"checker"]
323
564
        self.current_checker_command = None
324
 
        self.last_connect = None
325
 
        self._approved = None
326
 
        self.approved_by_default = config.get(u"approved_by_default",
327
 
                                              True)
 
565
        self.approved = None
328
566
        self.approvals_pending = 0
329
 
        self.approved_delay = string_to_delta(
330
 
            config[u"approved_delay"])
331
 
        self.approved_duration = string_to_delta(
332
 
            config[u"approved_duration"])
333
 
        self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
 
567
        self.changedstate = (multiprocessing_manager
 
568
                             .Condition(multiprocessing_manager
 
569
                                        .Lock()))
 
570
        self.client_structure = [attr for attr in
 
571
                                 self.__dict__.iterkeys()
 
572
                                 if not attr.startswith("_")]
 
573
        self.client_structure.append("client_structure")
 
574
        
 
575
        for name, t in inspect.getmembers(type(self),
 
576
                                          lambda obj:
 
577
                                              isinstance(obj,
 
578
                                                         property)):
 
579
            if not name.startswith("_"):
 
580
                self.client_structure.append(name)
334
581
    
 
582
    # Send notice to process children that client state has changed
335
583
    def send_changedstate(self):
336
 
        self.changedstate.acquire()
337
 
        self.changedstate.notify_all()
338
 
        self.changedstate.release()
339
 
        
 
584
        with self.changedstate:
 
585
            self.changedstate.notify_all()
 
586
    
340
587
    def enable(self):
341
588
        """Start this client's checker and timeout hooks"""
342
 
        if getattr(self, u"enabled", False):
 
589
        if getattr(self, "enabled", False):
343
590
            # Already enabled
344
591
            return
345
 
        self.send_changedstate()
 
592
        self.expires = datetime.datetime.utcnow() + self.timeout
 
593
        self.enabled = True
346
594
        self.last_enabled = datetime.datetime.utcnow()
 
595
        self.init_checker()
 
596
        self.send_changedstate()
 
597
    
 
598
    def disable(self, quiet=True):
 
599
        """Disable this client."""
 
600
        if not getattr(self, "enabled", False):
 
601
            return False
 
602
        if not quiet:
 
603
            logger.info("Disabling client %s", self.name)
 
604
        if getattr(self, "disable_initiator_tag", None) is not None:
 
605
            gobject.source_remove(self.disable_initiator_tag)
 
606
            self.disable_initiator_tag = None
 
607
        self.expires = None
 
608
        if getattr(self, "checker_initiator_tag", None) is not None:
 
609
            gobject.source_remove(self.checker_initiator_tag)
 
610
            self.checker_initiator_tag = None
 
611
        self.stop_checker()
 
612
        self.enabled = False
 
613
        if not quiet:
 
614
            self.send_changedstate()
 
615
        # Do not run this again if called by a gobject.timeout_add
 
616
        return False
 
617
    
 
618
    def __del__(self):
 
619
        self.disable()
 
620
    
 
621
    def init_checker(self):
347
622
        # Schedule a new checker to be started an 'interval' from now,
348
623
        # and every interval from then on.
 
624
        if self.checker_initiator_tag is not None:
 
625
            gobject.source_remove(self.checker_initiator_tag)
349
626
        self.checker_initiator_tag = (gobject.timeout_add
350
627
                                      (self.interval_milliseconds(),
351
628
                                       self.start_checker))
352
629
        # Schedule a disable() when 'timeout' has passed
 
630
        if self.disable_initiator_tag is not None:
 
631
            gobject.source_remove(self.disable_initiator_tag)
353
632
        self.disable_initiator_tag = (gobject.timeout_add
354
633
                                   (self.timeout_milliseconds(),
355
634
                                    self.disable))
356
 
        self.enabled = True
357
635
        # Also start a new checker *right now*.
358
636
        self.start_checker()
359
637
    
360
 
    def disable(self, quiet=True):
361
 
        """Disable this client."""
362
 
        if not getattr(self, "enabled", False):
363
 
            return False
364
 
        if not quiet:
365
 
            self.send_changedstate()
366
 
        if not quiet:
367
 
            logger.info(u"Disabling client %s", self.name)
368
 
        if getattr(self, u"disable_initiator_tag", False):
369
 
            gobject.source_remove(self.disable_initiator_tag)
370
 
            self.disable_initiator_tag = None
371
 
        if getattr(self, u"checker_initiator_tag", False):
372
 
            gobject.source_remove(self.checker_initiator_tag)
373
 
            self.checker_initiator_tag = None
374
 
        self.stop_checker()
375
 
        if self.disable_hook:
376
 
            self.disable_hook(self)
377
 
        self.enabled = False
378
 
        # Do not run this again if called by a gobject.timeout_add
379
 
        return False
380
 
    
381
 
    def __del__(self):
382
 
        self.disable_hook = None
383
 
        self.disable()
384
 
    
385
638
    def checker_callback(self, pid, condition, command):
386
639
        """The checker has completed, so take appropriate actions."""
387
640
        self.checker_callback_tag = None
388
641
        self.checker = None
389
642
        if os.WIFEXITED(condition):
390
 
            exitstatus = os.WEXITSTATUS(condition)
391
 
            if exitstatus == 0:
392
 
                logger.info(u"Checker for %(name)s succeeded",
 
643
            self.last_checker_status = os.WEXITSTATUS(condition)
 
644
            if self.last_checker_status == 0:
 
645
                logger.info("Checker for %(name)s succeeded",
393
646
                            vars(self))
394
647
                self.checked_ok()
395
648
            else:
396
 
                logger.info(u"Checker for %(name)s failed",
 
649
                logger.info("Checker for %(name)s failed",
397
650
                            vars(self))
398
651
        else:
399
 
            logger.warning(u"Checker for %(name)s crashed?",
 
652
            self.last_checker_status = -1
 
653
            logger.warning("Checker for %(name)s crashed?",
400
654
                           vars(self))
401
655
    
402
656
    def checked_ok(self):
403
 
        """Bump up the timeout for this client.
404
 
        
405
 
        This should only be called when the client has been seen,
406
 
        alive and well.
407
 
        """
 
657
        """Assert that the client has been seen, alive and well."""
408
658
        self.last_checked_ok = datetime.datetime.utcnow()
409
 
        gobject.source_remove(self.disable_initiator_tag)
410
 
        self.disable_initiator_tag = (gobject.timeout_add
411
 
                                      (self.timeout_milliseconds(),
412
 
                                       self.disable))
 
659
        self.last_checker_status = 0
 
660
        self.bump_timeout()
 
661
    
 
662
    def bump_timeout(self, timeout=None):
 
663
        """Bump up the timeout for this client."""
 
664
        if timeout is None:
 
665
            timeout = self.timeout
 
666
        if self.disable_initiator_tag is not None:
 
667
            gobject.source_remove(self.disable_initiator_tag)
 
668
            self.disable_initiator_tag = None
 
669
        if getattr(self, "enabled", False):
 
670
            self.disable_initiator_tag = (gobject.timeout_add
 
671
                                          (timedelta_to_milliseconds
 
672
                                           (timeout), self.disable))
 
673
            self.expires = datetime.datetime.utcnow() + timeout
 
674
    
 
675
    def need_approval(self):
 
676
        self.last_approval_request = datetime.datetime.utcnow()
413
677
    
414
678
    def start_checker(self):
415
679
        """Start a new checker subprocess if one is not running.
417
681
        If a checker already exists, leave it running and do
418
682
        nothing."""
419
683
        # The reason for not killing a running checker is that if we
420
 
        # did that, then if a checker (for some reason) started
421
 
        # running slowly and taking more than 'interval' time, the
422
 
        # client would inevitably timeout, since no checker would get
423
 
        # a chance to run to completion.  If we instead leave running
 
684
        # did that, and if a checker (for some reason) started running
 
685
        # slowly and taking more than 'interval' time, then the client
 
686
        # would inevitably timeout, since no checker would get a
 
687
        # chance to run to completion.  If we instead leave running
424
688
        # checkers alone, the checker would have to take more time
425
689
        # than 'timeout' for the client to be disabled, which is as it
426
690
        # should be.
428
692
        # If a checker exists, make sure it is not a zombie
429
693
        try:
430
694
            pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
431
 
        except (AttributeError, OSError), error:
432
 
            if (isinstance(error, OSError)
433
 
                and error.errno != errno.ECHILD):
434
 
                raise error
 
695
        except AttributeError:
 
696
            pass
 
697
        except OSError as error:
 
698
            if error.errno != errno.ECHILD:
 
699
                raise
435
700
        else:
436
701
            if pid:
437
 
                logger.warning(u"Checker was a zombie")
 
702
                logger.warning("Checker was a zombie")
438
703
                gobject.source_remove(self.checker_callback_tag)
439
704
                self.checker_callback(pid, status,
440
705
                                      self.current_checker_command)
441
706
        # Start a new checker if needed
442
707
        if self.checker is None:
 
708
            # Escape attributes for the shell
 
709
            escaped_attrs = dict(
 
710
                (attr, re.escape(unicode(getattr(self, attr))))
 
711
                for attr in
 
712
                self.runtime_expansions)
443
713
            try:
444
 
                # In case checker_command has exactly one % operator
445
 
                command = self.checker_command % self.host
446
 
            except TypeError:
447
 
                # Escape attributes for the shell
448
 
                escaped_attrs = dict((key,
449
 
                                      re.escape(unicode(str(val),
450
 
                                                        errors=
451
 
                                                        u'replace')))
452
 
                                     for key, val in
453
 
                                     vars(self).iteritems())
454
 
                try:
455
 
                    command = self.checker_command % escaped_attrs
456
 
                except TypeError, error:
457
 
                    logger.error(u'Could not format string "%s":'
458
 
                                 u' %s', self.checker_command, error)
459
 
                    return True # Try again later
 
714
                command = self.checker_command % escaped_attrs
 
715
            except TypeError as error:
 
716
                logger.error('Could not format string "%s"',
 
717
                             self.checker_command, exc_info=error)
 
718
                return True # Try again later
460
719
            self.current_checker_command = command
461
720
            try:
462
 
                logger.info(u"Starting checker %r for %s",
 
721
                logger.info("Starting checker %r for %s",
463
722
                            command, self.name)
464
723
                # We don't need to redirect stdout and stderr, since
465
724
                # in normal mode, that is already done by daemon(),
466
725
                # and in debug mode we don't want to.  (Stdin is
467
726
                # always replaced by /dev/null.)
 
727
                # The exception is when not debugging but nevertheless
 
728
                # running in the foreground; use the previously
 
729
                # created wnull.
 
730
                popen_args = {}
 
731
                if (not self.server_settings["debug"]
 
732
                    and self.server_settings["foreground"]):
 
733
                    popen_args.update({"stdout": wnull,
 
734
                                       "stderr": wnull })
468
735
                self.checker = subprocess.Popen(command,
469
736
                                                close_fds=True,
470
 
                                                shell=True, cwd=u"/")
471
 
                self.checker_callback_tag = (gobject.child_watch_add
472
 
                                             (self.checker.pid,
473
 
                                              self.checker_callback,
474
 
                                              data=command))
475
 
                # The checker may have completed before the gobject
476
 
                # watch was added.  Check for this.
 
737
                                                shell=True, cwd="/",
 
738
                                                **popen_args)
 
739
            except OSError as error:
 
740
                logger.error("Failed to start subprocess",
 
741
                             exc_info=error)
 
742
                return True
 
743
            self.checker_callback_tag = (gobject.child_watch_add
 
744
                                         (self.checker.pid,
 
745
                                          self.checker_callback,
 
746
                                          data=command))
 
747
            # The checker may have completed before the gobject
 
748
            # watch was added.  Check for this.
 
749
            try:
477
750
                pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
478
 
                if pid:
479
 
                    gobject.source_remove(self.checker_callback_tag)
480
 
                    self.checker_callback(pid, status, command)
481
 
            except OSError, error:
482
 
                logger.error(u"Failed to start subprocess: %s",
483
 
                             error)
 
751
            except OSError as error:
 
752
                if error.errno == errno.ECHILD:
 
753
                    # This should never happen
 
754
                    logger.error("Child process vanished",
 
755
                                 exc_info=error)
 
756
                    return True
 
757
                raise
 
758
            if pid:
 
759
                gobject.source_remove(self.checker_callback_tag)
 
760
                self.checker_callback(pid, status, command)
484
761
        # Re-run this periodically if run by gobject.timeout_add
485
762
        return True
486
763
    
489
766
        if self.checker_callback_tag:
490
767
            gobject.source_remove(self.checker_callback_tag)
491
768
            self.checker_callback_tag = None
492
 
        if getattr(self, u"checker", None) is None:
 
769
        if getattr(self, "checker", None) is None:
493
770
            return
494
 
        logger.debug(u"Stopping checker for %(name)s", vars(self))
 
771
        logger.debug("Stopping checker for %(name)s", vars(self))
495
772
        try:
496
 
            os.kill(self.checker.pid, signal.SIGTERM)
 
773
            self.checker.terminate()
497
774
            #time.sleep(0.5)
498
775
            #if self.checker.poll() is None:
499
 
            #    os.kill(self.checker.pid, signal.SIGKILL)
500
 
        except OSError, error:
 
776
            #    self.checker.kill()
 
777
        except OSError as error:
501
778
            if error.errno != errno.ESRCH: # No such process
502
779
                raise
503
780
        self.checker = None
504
781
 
505
 
def dbus_service_property(dbus_interface, signature=u"v",
506
 
                          access=u"readwrite", byte_arrays=False):
 
782
 
 
783
def dbus_service_property(dbus_interface, signature="v",
 
784
                          access="readwrite", byte_arrays=False):
507
785
    """Decorators for marking methods of a DBusObjectWithProperties to
508
786
    become properties on the D-Bus.
509
787
    
516
794
    """
517
795
    # Encoding deeply encoded byte arrays is not supported yet by the
518
796
    # "Set" method, so we fail early here:
519
 
    if byte_arrays and signature != u"ay":
520
 
        raise ValueError(u"Byte arrays not supported for non-'ay'"
521
 
                         u" signature %r" % signature)
 
797
    if byte_arrays and signature != "ay":
 
798
        raise ValueError("Byte arrays not supported for non-'ay'"
 
799
                         " signature {0!r}".format(signature))
522
800
    def decorator(func):
523
801
        func._dbus_is_property = True
524
802
        func._dbus_interface = dbus_interface
525
803
        func._dbus_signature = signature
526
804
        func._dbus_access = access
527
805
        func._dbus_name = func.__name__
528
 
        if func._dbus_name.endswith(u"_dbus_property"):
 
806
        if func._dbus_name.endswith("_dbus_property"):
529
807
            func._dbus_name = func._dbus_name[:-14]
530
 
        func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
 
808
        func._dbus_get_args_options = {'byte_arrays': byte_arrays }
 
809
        return func
 
810
    return decorator
 
811
 
 
812
 
 
813
def dbus_interface_annotations(dbus_interface):
 
814
    """Decorator for marking functions returning interface annotations
 
815
    
 
816
    Usage:
 
817
    
 
818
    @dbus_interface_annotations("org.example.Interface")
 
819
    def _foo(self):  # Function name does not matter
 
820
        return {"org.freedesktop.DBus.Deprecated": "true",
 
821
                "org.freedesktop.DBus.Property.EmitsChangedSignal":
 
822
                    "false"}
 
823
    """
 
824
    def decorator(func):
 
825
        func._dbus_is_interface = True
 
826
        func._dbus_interface = dbus_interface
 
827
        func._dbus_name = dbus_interface
 
828
        return func
 
829
    return decorator
 
830
 
 
831
 
 
832
def dbus_annotations(annotations):
 
833
    """Decorator to annotate D-Bus methods, signals or properties
 
834
    Usage:
 
835
    
 
836
    @dbus_service_property("org.example.Interface", signature="b",
 
837
                           access="r")
 
838
    @dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
 
839
                        "org.freedesktop.DBus.Property."
 
840
                        "EmitsChangedSignal": "false"})
 
841
    def Property_dbus_property(self):
 
842
        return dbus.Boolean(False)
 
843
    """
 
844
    def decorator(func):
 
845
        func._dbus_annotations = annotations
531
846
        return func
532
847
    return decorator
533
848
 
553
868
 
554
869
class DBusObjectWithProperties(dbus.service.Object):
555
870
    """A D-Bus object with properties.
556
 
 
 
871
    
557
872
    Classes inheriting from this can use the dbus_service_property
558
873
    decorator to expose methods as D-Bus properties.  It exposes the
559
874
    standard Get(), Set(), and GetAll() methods on the D-Bus.
560
875
    """
561
876
    
562
877
    @staticmethod
563
 
    def _is_dbus_property(obj):
564
 
        return getattr(obj, u"_dbus_is_property", False)
 
878
    def _is_dbus_thing(thing):
 
879
        """Returns a function testing if an attribute is a D-Bus thing
 
880
        
 
881
        If called like _is_dbus_thing("method") it returns a function
 
882
        suitable for use as predicate to inspect.getmembers().
 
883
        """
 
884
        return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
 
885
                                   False)
565
886
    
566
 
    def _get_all_dbus_properties(self):
 
887
    def _get_all_dbus_things(self, thing):
567
888
        """Returns a generator of (name, attribute) pairs
568
889
        """
569
 
        return ((prop._dbus_name, prop)
570
 
                for name, prop in
571
 
                inspect.getmembers(self, self._is_dbus_property))
 
890
        return ((getattr(athing.__get__(self), "_dbus_name",
 
891
                         name),
 
892
                 athing.__get__(self))
 
893
                for cls in self.__class__.__mro__
 
894
                for name, athing in
 
895
                inspect.getmembers(cls,
 
896
                                   self._is_dbus_thing(thing)))
572
897
    
573
898
    def _get_dbus_property(self, interface_name, property_name):
574
899
        """Returns a bound method if one exists which is a D-Bus
575
900
        property with the specified name and interface.
576
901
        """
577
 
        for name in (property_name,
578
 
                     property_name + u"_dbus_property"):
579
 
            prop = getattr(self, name, None)
580
 
            if (prop is None
581
 
                or not self._is_dbus_property(prop)
582
 
                or prop._dbus_name != property_name
583
 
                or (interface_name and prop._dbus_interface
584
 
                    and interface_name != prop._dbus_interface)):
585
 
                continue
586
 
            return prop
 
902
        for cls in  self.__class__.__mro__:
 
903
            for name, value in (inspect.getmembers
 
904
                                (cls,
 
905
                                 self._is_dbus_thing("property"))):
 
906
                if (value._dbus_name == property_name
 
907
                    and value._dbus_interface == interface_name):
 
908
                    return value.__get__(self)
 
909
        
587
910
        # No such property
588
 
        raise DBusPropertyNotFound(self.dbus_object_path + u":"
589
 
                                   + interface_name + u"."
 
911
        raise DBusPropertyNotFound(self.dbus_object_path + ":"
 
912
                                   + interface_name + "."
590
913
                                   + property_name)
591
914
    
592
 
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
593
 
                         out_signature=u"v")
 
915
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
 
916
                         out_signature="v")
594
917
    def Get(self, interface_name, property_name):
595
918
        """Standard D-Bus property Get() method, see D-Bus standard.
596
919
        """
597
920
        prop = self._get_dbus_property(interface_name, property_name)
598
 
        if prop._dbus_access == u"write":
 
921
        if prop._dbus_access == "write":
599
922
            raise DBusPropertyAccessException(property_name)
600
923
        value = prop()
601
 
        if not hasattr(value, u"variant_level"):
 
924
        if not hasattr(value, "variant_level"):
602
925
            return value
603
926
        return type(value)(value, variant_level=value.variant_level+1)
604
927
    
605
 
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
 
928
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
606
929
    def Set(self, interface_name, property_name, value):
607
930
        """Standard D-Bus property Set() method, see D-Bus standard.
608
931
        """
609
932
        prop = self._get_dbus_property(interface_name, property_name)
610
 
        if prop._dbus_access == u"read":
 
933
        if prop._dbus_access == "read":
611
934
            raise DBusPropertyAccessException(property_name)
612
 
        if prop._dbus_get_args_options[u"byte_arrays"]:
 
935
        if prop._dbus_get_args_options["byte_arrays"]:
613
936
            # The byte_arrays option is not supported yet on
614
937
            # signatures other than "ay".
615
 
            if prop._dbus_signature != u"ay":
616
 
                raise ValueError
617
 
            value = dbus.ByteArray(''.join(unichr(byte)
618
 
                                           for byte in value))
 
938
            if prop._dbus_signature != "ay":
 
939
                raise ValueError("Byte arrays not supported for non-"
 
940
                                 "'ay' signature {0!r}"
 
941
                                 .format(prop._dbus_signature))
 
942
            value = dbus.ByteArray(b''.join(chr(byte)
 
943
                                            for byte in value))
619
944
        prop(value)
620
945
    
621
 
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
622
 
                         out_signature=u"a{sv}")
 
946
    @dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
 
947
                         out_signature="a{sv}")
623
948
    def GetAll(self, interface_name):
624
949
        """Standard D-Bus property GetAll() method, see D-Bus
625
950
        standard.
626
 
 
 
951
        
627
952
        Note: Will not include properties with access="write".
628
953
        """
629
 
        all = {}
630
 
        for name, prop in self._get_all_dbus_properties():
 
954
        properties = {}
 
955
        for name, prop in self._get_all_dbus_things("property"):
631
956
            if (interface_name
632
957
                and interface_name != prop._dbus_interface):
633
958
                # Interface non-empty but did not match
634
959
                continue
635
960
            # Ignore write-only properties
636
 
            if prop._dbus_access == u"write":
 
961
            if prop._dbus_access == "write":
637
962
                continue
638
963
            value = prop()
639
 
            if not hasattr(value, u"variant_level"):
640
 
                all[name] = value
 
964
            if not hasattr(value, "variant_level"):
 
965
                properties[name] = value
641
966
                continue
642
 
            all[name] = type(value)(value, variant_level=
643
 
                                    value.variant_level+1)
644
 
        return dbus.Dictionary(all, signature=u"sv")
 
967
            properties[name] = type(value)(value, variant_level=
 
968
                                           value.variant_level+1)
 
969
        return dbus.Dictionary(properties, signature="sv")
645
970
    
646
971
    @dbus.service.method(dbus.INTROSPECTABLE_IFACE,
647
 
                         out_signature=u"s",
 
972
                         out_signature="s",
648
973
                         path_keyword='object_path',
649
974
                         connection_keyword='connection')
650
975
    def Introspect(self, object_path, connection):
651
 
        """Standard D-Bus method, overloaded to insert property tags.
 
976
        """Overloading of standard D-Bus method.
 
977
        
 
978
        Inserts property tags and interface annotation tags.
652
979
        """
653
980
        xmlstring = dbus.service.Object.Introspect(self, object_path,
654
981
                                                   connection)
655
982
        try:
656
983
            document = xml.dom.minidom.parseString(xmlstring)
657
984
            def make_tag(document, name, prop):
658
 
                e = document.createElement(u"property")
659
 
                e.setAttribute(u"name", name)
660
 
                e.setAttribute(u"type", prop._dbus_signature)
661
 
                e.setAttribute(u"access", prop._dbus_access)
 
985
                e = document.createElement("property")
 
986
                e.setAttribute("name", name)
 
987
                e.setAttribute("type", prop._dbus_signature)
 
988
                e.setAttribute("access", prop._dbus_access)
662
989
                return e
663
 
            for if_tag in document.getElementsByTagName(u"interface"):
 
990
            for if_tag in document.getElementsByTagName("interface"):
 
991
                # Add property tags
664
992
                for tag in (make_tag(document, name, prop)
665
993
                            for name, prop
666
 
                            in self._get_all_dbus_properties()
 
994
                            in self._get_all_dbus_things("property")
667
995
                            if prop._dbus_interface
668
 
                            == if_tag.getAttribute(u"name")):
 
996
                            == if_tag.getAttribute("name")):
669
997
                    if_tag.appendChild(tag)
 
998
                # Add annotation tags
 
999
                for typ in ("method", "signal", "property"):
 
1000
                    for tag in if_tag.getElementsByTagName(typ):
 
1001
                        annots = dict()
 
1002
                        for name, prop in (self.
 
1003
                                           _get_all_dbus_things(typ)):
 
1004
                            if (name == tag.getAttribute("name")
 
1005
                                and prop._dbus_interface
 
1006
                                == if_tag.getAttribute("name")):
 
1007
                                annots.update(getattr
 
1008
                                              (prop,
 
1009
                                               "_dbus_annotations",
 
1010
                                               {}))
 
1011
                        for name, value in annots.iteritems():
 
1012
                            ann_tag = document.createElement(
 
1013
                                "annotation")
 
1014
                            ann_tag.setAttribute("name", name)
 
1015
                            ann_tag.setAttribute("value", value)
 
1016
                            tag.appendChild(ann_tag)
 
1017
                # Add interface annotation tags
 
1018
                for annotation, value in dict(
 
1019
                    itertools.chain.from_iterable(
 
1020
                        annotations().iteritems()
 
1021
                        for name, annotations in
 
1022
                        self._get_all_dbus_things("interface")
 
1023
                        if name == if_tag.getAttribute("name")
 
1024
                        )).iteritems():
 
1025
                    ann_tag = document.createElement("annotation")
 
1026
                    ann_tag.setAttribute("name", annotation)
 
1027
                    ann_tag.setAttribute("value", value)
 
1028
                    if_tag.appendChild(ann_tag)
670
1029
                # Add the names to the return values for the
671
1030
                # "org.freedesktop.DBus.Properties" methods
672
 
                if (if_tag.getAttribute(u"name")
673
 
                    == u"org.freedesktop.DBus.Properties"):
674
 
                    for cn in if_tag.getElementsByTagName(u"method"):
675
 
                        if cn.getAttribute(u"name") == u"Get":
676
 
                            for arg in cn.getElementsByTagName(u"arg"):
677
 
                                if (arg.getAttribute(u"direction")
678
 
                                    == u"out"):
679
 
                                    arg.setAttribute(u"name", u"value")
680
 
                        elif cn.getAttribute(u"name") == u"GetAll":
681
 
                            for arg in cn.getElementsByTagName(u"arg"):
682
 
                                if (arg.getAttribute(u"direction")
683
 
                                    == u"out"):
684
 
                                    arg.setAttribute(u"name", u"props")
685
 
            xmlstring = document.toxml(u"utf-8")
 
1031
                if (if_tag.getAttribute("name")
 
1032
                    == "org.freedesktop.DBus.Properties"):
 
1033
                    for cn in if_tag.getElementsByTagName("method"):
 
1034
                        if cn.getAttribute("name") == "Get":
 
1035
                            for arg in cn.getElementsByTagName("arg"):
 
1036
                                if (arg.getAttribute("direction")
 
1037
                                    == "out"):
 
1038
                                    arg.setAttribute("name", "value")
 
1039
                        elif cn.getAttribute("name") == "GetAll":
 
1040
                            for arg in cn.getElementsByTagName("arg"):
 
1041
                                if (arg.getAttribute("direction")
 
1042
                                    == "out"):
 
1043
                                    arg.setAttribute("name", "props")
 
1044
            xmlstring = document.toxml("utf-8")
686
1045
            document.unlink()
687
1046
        except (AttributeError, xml.dom.DOMException,
688
 
                xml.parsers.expat.ExpatError), error:
689
 
            logger.error(u"Failed to override Introspection method",
690
 
                         error)
 
1047
                xml.parsers.expat.ExpatError) as error:
 
1048
            logger.error("Failed to override Introspection method",
 
1049
                         exc_info=error)
691
1050
        return xmlstring
692
1051
 
693
1052
 
 
1053
def datetime_to_dbus(dt, variant_level=0):
 
1054
    """Convert a UTC datetime.datetime() to a D-Bus type."""
 
1055
    if dt is None:
 
1056
        return dbus.String("", variant_level = variant_level)
 
1057
    return dbus.String(dt.isoformat(),
 
1058
                       variant_level=variant_level)
 
1059
 
 
1060
 
 
1061
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
 
1062
    """A class decorator; applied to a subclass of
 
1063
    dbus.service.Object, it will add alternate D-Bus attributes with
 
1064
    interface names according to the "alt_interface_names" mapping.
 
1065
    Usage:
 
1066
    
 
1067
    @alternate_dbus_interfaces({"org.example.Interface":
 
1068
                                    "net.example.AlternateInterface"})
 
1069
    class SampleDBusObject(dbus.service.Object):
 
1070
        @dbus.service.method("org.example.Interface")
 
1071
        def SampleDBusMethod():
 
1072
            pass
 
1073
    
 
1074
    The above "SampleDBusMethod" on "SampleDBusObject" will be
 
1075
    reachable via two interfaces: "org.example.Interface" and
 
1076
    "net.example.AlternateInterface", the latter of which will have
 
1077
    its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
 
1078
    "true", unless "deprecate" is passed with a False value.
 
1079
    
 
1080
    This works for methods and signals, and also for D-Bus properties
 
1081
    (from DBusObjectWithProperties) and interfaces (from the
 
1082
    dbus_interface_annotations decorator).
 
1083
    """
 
1084
    def wrapper(cls):
 
1085
        for orig_interface_name, alt_interface_name in (
 
1086
            alt_interface_names.iteritems()):
 
1087
            attr = {}
 
1088
            interface_names = set()
 
1089
            # Go though all attributes of the class
 
1090
            for attrname, attribute in inspect.getmembers(cls):
 
1091
                # Ignore non-D-Bus attributes, and D-Bus attributes
 
1092
                # with the wrong interface name
 
1093
                if (not hasattr(attribute, "_dbus_interface")
 
1094
                    or not attribute._dbus_interface
 
1095
                    .startswith(orig_interface_name)):
 
1096
                    continue
 
1097
                # Create an alternate D-Bus interface name based on
 
1098
                # the current name
 
1099
                alt_interface = (attribute._dbus_interface
 
1100
                                 .replace(orig_interface_name,
 
1101
                                          alt_interface_name))
 
1102
                interface_names.add(alt_interface)
 
1103
                # Is this a D-Bus signal?
 
1104
                if getattr(attribute, "_dbus_is_signal", False):
 
1105
                    # Extract the original non-method undecorated
 
1106
                    # function by black magic
 
1107
                    nonmethod_func = (dict(
 
1108
                            zip(attribute.func_code.co_freevars,
 
1109
                                attribute.__closure__))["func"]
 
1110
                                      .cell_contents)
 
1111
                    # Create a new, but exactly alike, function
 
1112
                    # object, and decorate it to be a new D-Bus signal
 
1113
                    # with the alternate D-Bus interface name
 
1114
                    new_function = (dbus.service.signal
 
1115
                                    (alt_interface,
 
1116
                                     attribute._dbus_signature)
 
1117
                                    (types.FunctionType(
 
1118
                                nonmethod_func.func_code,
 
1119
                                nonmethod_func.func_globals,
 
1120
                                nonmethod_func.func_name,
 
1121
                                nonmethod_func.func_defaults,
 
1122
                                nonmethod_func.func_closure)))
 
1123
                    # Copy annotations, if any
 
1124
                    try:
 
1125
                        new_function._dbus_annotations = (
 
1126
                            dict(attribute._dbus_annotations))
 
1127
                    except AttributeError:
 
1128
                        pass
 
1129
                    # Define a creator of a function to call both the
 
1130
                    # original and alternate functions, so both the
 
1131
                    # original and alternate signals gets sent when
 
1132
                    # the function is called
 
1133
                    def fixscope(func1, func2):
 
1134
                        """This function is a scope container to pass
 
1135
                        func1 and func2 to the "call_both" function
 
1136
                        outside of its arguments"""
 
1137
                        def call_both(*args, **kwargs):
 
1138
                            """This function will emit two D-Bus
 
1139
                            signals by calling func1 and func2"""
 
1140
                            func1(*args, **kwargs)
 
1141
                            func2(*args, **kwargs)
 
1142
                        return call_both
 
1143
                    # Create the "call_both" function and add it to
 
1144
                    # the class
 
1145
                    attr[attrname] = fixscope(attribute, new_function)
 
1146
                # Is this a D-Bus method?
 
1147
                elif getattr(attribute, "_dbus_is_method", False):
 
1148
                    # Create a new, but exactly alike, function
 
1149
                    # object.  Decorate it to be a new D-Bus method
 
1150
                    # with the alternate D-Bus interface name.  Add it
 
1151
                    # to the class.
 
1152
                    attr[attrname] = (dbus.service.method
 
1153
                                      (alt_interface,
 
1154
                                       attribute._dbus_in_signature,
 
1155
                                       attribute._dbus_out_signature)
 
1156
                                      (types.FunctionType
 
1157
                                       (attribute.func_code,
 
1158
                                        attribute.func_globals,
 
1159
                                        attribute.func_name,
 
1160
                                        attribute.func_defaults,
 
1161
                                        attribute.func_closure)))
 
1162
                    # Copy annotations, if any
 
1163
                    try:
 
1164
                        attr[attrname]._dbus_annotations = (
 
1165
                            dict(attribute._dbus_annotations))
 
1166
                    except AttributeError:
 
1167
                        pass
 
1168
                # Is this a D-Bus property?
 
1169
                elif getattr(attribute, "_dbus_is_property", False):
 
1170
                    # Create a new, but exactly alike, function
 
1171
                    # object, and decorate it to be a new D-Bus
 
1172
                    # property with the alternate D-Bus interface
 
1173
                    # name.  Add it to the class.
 
1174
                    attr[attrname] = (dbus_service_property
 
1175
                                      (alt_interface,
 
1176
                                       attribute._dbus_signature,
 
1177
                                       attribute._dbus_access,
 
1178
                                       attribute
 
1179
                                       ._dbus_get_args_options
 
1180
                                       ["byte_arrays"])
 
1181
                                      (types.FunctionType
 
1182
                                       (attribute.func_code,
 
1183
                                        attribute.func_globals,
 
1184
                                        attribute.func_name,
 
1185
                                        attribute.func_defaults,
 
1186
                                        attribute.func_closure)))
 
1187
                    # Copy annotations, if any
 
1188
                    try:
 
1189
                        attr[attrname]._dbus_annotations = (
 
1190
                            dict(attribute._dbus_annotations))
 
1191
                    except AttributeError:
 
1192
                        pass
 
1193
                # Is this a D-Bus interface?
 
1194
                elif getattr(attribute, "_dbus_is_interface", False):
 
1195
                    # Create a new, but exactly alike, function
 
1196
                    # object.  Decorate it to be a new D-Bus interface
 
1197
                    # with the alternate D-Bus interface name.  Add it
 
1198
                    # to the class.
 
1199
                    attr[attrname] = (dbus_interface_annotations
 
1200
                                      (alt_interface)
 
1201
                                      (types.FunctionType
 
1202
                                       (attribute.func_code,
 
1203
                                        attribute.func_globals,
 
1204
                                        attribute.func_name,
 
1205
                                        attribute.func_defaults,
 
1206
                                        attribute.func_closure)))
 
1207
            if deprecate:
 
1208
                # Deprecate all alternate interfaces
 
1209
                iname="_AlternateDBusNames_interface_annotation{0}"
 
1210
                for interface_name in interface_names:
 
1211
                    @dbus_interface_annotations(interface_name)
 
1212
                    def func(self):
 
1213
                        return { "org.freedesktop.DBus.Deprecated":
 
1214
                                     "true" }
 
1215
                    # Find an unused name
 
1216
                    for aname in (iname.format(i)
 
1217
                                  for i in itertools.count()):
 
1218
                        if aname not in attr:
 
1219
                            attr[aname] = func
 
1220
                            break
 
1221
            if interface_names:
 
1222
                # Replace the class with a new subclass of it with
 
1223
                # methods, signals, etc. as created above.
 
1224
                cls = type(b"{0}Alternate".format(cls.__name__),
 
1225
                           (cls,), attr)
 
1226
        return cls
 
1227
    return wrapper
 
1228
 
 
1229
 
 
1230
@alternate_dbus_interfaces({"se.recompile.Mandos":
 
1231
                                "se.bsnet.fukt.Mandos"})
694
1232
class ClientDBus(Client, DBusObjectWithProperties):
695
1233
    """A Client class using D-Bus
696
1234
    
698
1236
    dbus_object_path: dbus.ObjectPath
699
1237
    bus: dbus.SystemBus()
700
1238
    """
 
1239
    
 
1240
    runtime_expansions = (Client.runtime_expansions
 
1241
                          + ("dbus_object_path",))
 
1242
    
701
1243
    # dbus.service.Object doesn't use super(), so we can't either.
702
1244
    
703
1245
    def __init__(self, bus = None, *args, **kwargs):
704
 
        self._approvals_pending = 0
705
1246
        self.bus = bus
706
1247
        Client.__init__(self, *args, **kwargs)
707
1248
        # Only now, when this client is initialized, can it show up on
708
1249
        # the D-Bus
 
1250
        client_object_name = unicode(self.name).translate(
 
1251
            {ord("."): ord("_"),
 
1252
             ord("-"): ord("_")})
709
1253
        self.dbus_object_path = (dbus.ObjectPath
710
 
                                 (u"/clients/"
711
 
                                  + self.name.replace(u".", u"_")))
 
1254
                                 ("/clients/" + client_object_name))
712
1255
        DBusObjectWithProperties.__init__(self, self.bus,
713
1256
                                          self.dbus_object_path)
714
 
 
715
 
    #Could possible return a bool(self._approvals_pending),
716
 
    #but this could mess up approvals_pending += 1 XXX 
717
 
    def _get_approvals_pending(self):
718
 
        return self._approvals_pending
719
 
    def _set_approvals_pending(self, value):
720
 
        old_value = self._approvals_pending
721
 
        self._approvals_pending = value
722
 
        bval = bool(value)
723
 
        if (hasattr(self, "dbus_object_path")
724
 
            and bval is not bool(old_value)):
725
 
            dbus_bool = dbus.Boolean(bval, variant_level=1)
726
 
            self.PropertyChanged(dbus.String(u"approved_pending"),
727
 
                                 dbus_bool)
728
 
 
729
 
    approvals_pending = property(_get_approvals_pending,
730
 
                                 _set_approvals_pending)
731
 
    del _get_approvals_pending, _set_approvals_pending
732
 
    
733
 
    @staticmethod
734
 
    def _datetime_to_dbus(dt, variant_level=0):
735
 
        """Convert a UTC datetime.datetime() to a D-Bus type."""
736
 
        return dbus.String(dt.isoformat(),
737
 
                           variant_level=variant_level)
738
 
    
739
 
    def enable(self):
740
 
        oldstate = getattr(self, u"enabled", False)
741
 
        r = Client.enable(self)
742
 
        if oldstate != self.enabled:
743
 
            # Emit D-Bus signals
744
 
            self.PropertyChanged(dbus.String(u"enabled"),
745
 
                                 dbus.Boolean(True, variant_level=1))
746
 
            self.PropertyChanged(
747
 
                dbus.String(u"last_enabled"),
748
 
                self._datetime_to_dbus(self.last_enabled,
749
 
                                       variant_level=1))
750
 
        return r
751
 
    
752
 
    def disable(self, quiet = False):
753
 
        oldstate = getattr(self, u"enabled", False)
754
 
        r = Client.disable(self, quiet=quiet)
755
 
        if not quiet and oldstate != self.enabled:
756
 
            # Emit D-Bus signal
757
 
            self.PropertyChanged(dbus.String(u"enabled"),
758
 
                                 dbus.Boolean(False, variant_level=1))
759
 
        return r
 
1257
    
 
1258
    def notifychangeproperty(transform_func,
 
1259
                             dbus_name, type_func=lambda x: x,
 
1260
                             variant_level=1):
 
1261
        """ Modify a variable so that it's a property which announces
 
1262
        its changes to DBus.
 
1263
        
 
1264
        transform_fun: Function that takes a value and a variant_level
 
1265
                       and transforms it to a D-Bus type.
 
1266
        dbus_name: D-Bus name of the variable
 
1267
        type_func: Function that transform the value before sending it
 
1268
                   to the D-Bus.  Default: no transform
 
1269
        variant_level: D-Bus variant level.  Default: 1
 
1270
        """
 
1271
        attrname = "_{0}".format(dbus_name)
 
1272
        def setter(self, value):
 
1273
            if hasattr(self, "dbus_object_path"):
 
1274
                if (not hasattr(self, attrname) or
 
1275
                    type_func(getattr(self, attrname, None))
 
1276
                    != type_func(value)):
 
1277
                    dbus_value = transform_func(type_func(value),
 
1278
                                                variant_level
 
1279
                                                =variant_level)
 
1280
                    self.PropertyChanged(dbus.String(dbus_name),
 
1281
                                         dbus_value)
 
1282
            setattr(self, attrname, value)
 
1283
        
 
1284
        return property(lambda self: getattr(self, attrname), setter)
 
1285
    
 
1286
    expires = notifychangeproperty(datetime_to_dbus, "Expires")
 
1287
    approvals_pending = notifychangeproperty(dbus.Boolean,
 
1288
                                             "ApprovalPending",
 
1289
                                             type_func = bool)
 
1290
    enabled = notifychangeproperty(dbus.Boolean, "Enabled")
 
1291
    last_enabled = notifychangeproperty(datetime_to_dbus,
 
1292
                                        "LastEnabled")
 
1293
    checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
 
1294
                                   type_func = lambda checker:
 
1295
                                       checker is not None)
 
1296
    last_checked_ok = notifychangeproperty(datetime_to_dbus,
 
1297
                                           "LastCheckedOK")
 
1298
    last_checker_status = notifychangeproperty(dbus.Int16,
 
1299
                                               "LastCheckerStatus")
 
1300
    last_approval_request = notifychangeproperty(
 
1301
        datetime_to_dbus, "LastApprovalRequest")
 
1302
    approved_by_default = notifychangeproperty(dbus.Boolean,
 
1303
                                               "ApprovedByDefault")
 
1304
    approval_delay = notifychangeproperty(dbus.UInt64,
 
1305
                                          "ApprovalDelay",
 
1306
                                          type_func =
 
1307
                                          timedelta_to_milliseconds)
 
1308
    approval_duration = notifychangeproperty(
 
1309
        dbus.UInt64, "ApprovalDuration",
 
1310
        type_func = timedelta_to_milliseconds)
 
1311
    host = notifychangeproperty(dbus.String, "Host")
 
1312
    timeout = notifychangeproperty(dbus.UInt64, "Timeout",
 
1313
                                   type_func =
 
1314
                                   timedelta_to_milliseconds)
 
1315
    extended_timeout = notifychangeproperty(
 
1316
        dbus.UInt64, "ExtendedTimeout",
 
1317
        type_func = timedelta_to_milliseconds)
 
1318
    interval = notifychangeproperty(dbus.UInt64,
 
1319
                                    "Interval",
 
1320
                                    type_func =
 
1321
                                    timedelta_to_milliseconds)
 
1322
    checker_command = notifychangeproperty(dbus.String, "Checker")
 
1323
    
 
1324
    del notifychangeproperty
760
1325
    
761
1326
    def __del__(self, *args, **kwargs):
762
1327
        try:
763
1328
            self.remove_from_connection()
764
1329
        except LookupError:
765
1330
            pass
766
 
        if hasattr(DBusObjectWithProperties, u"__del__"):
 
1331
        if hasattr(DBusObjectWithProperties, "__del__"):
767
1332
            DBusObjectWithProperties.__del__(self, *args, **kwargs)
768
1333
        Client.__del__(self, *args, **kwargs)
769
1334
    
771
1336
                         *args, **kwargs):
772
1337
        self.checker_callback_tag = None
773
1338
        self.checker = None
774
 
        # Emit D-Bus signal
775
 
        self.PropertyChanged(dbus.String(u"checker_running"),
776
 
                             dbus.Boolean(False, variant_level=1))
777
1339
        if os.WIFEXITED(condition):
778
1340
            exitstatus = os.WEXITSTATUS(condition)
779
1341
            # Emit D-Bus signal
789
1351
        return Client.checker_callback(self, pid, condition, command,
790
1352
                                       *args, **kwargs)
791
1353
    
792
 
    def checked_ok(self, *args, **kwargs):
793
 
        r = Client.checked_ok(self, *args, **kwargs)
794
 
        # Emit D-Bus signal
795
 
        self.PropertyChanged(
796
 
            dbus.String(u"last_checked_ok"),
797
 
            (self._datetime_to_dbus(self.last_checked_ok,
798
 
                                    variant_level=1)))
799
 
        return r
800
 
    
801
1354
    def start_checker(self, *args, **kwargs):
802
 
        old_checker = self.checker
803
 
        if self.checker is not None:
804
 
            old_checker_pid = self.checker.pid
805
 
        else:
806
 
            old_checker_pid = None
 
1355
        old_checker_pid = getattr(self.checker, "pid", None)
807
1356
        r = Client.start_checker(self, *args, **kwargs)
808
1357
        # Only if new checker process was started
809
1358
        if (self.checker is not None
810
1359
            and old_checker_pid != self.checker.pid):
811
1360
            # Emit D-Bus signal
812
1361
            self.CheckerStarted(self.current_checker_command)
813
 
            self.PropertyChanged(
814
 
                dbus.String(u"checker_running"),
815
 
                dbus.Boolean(True, variant_level=1))
816
1362
        return r
817
1363
    
818
 
    def stop_checker(self, *args, **kwargs):
819
 
        old_checker = getattr(self, u"checker", None)
820
 
        r = Client.stop_checker(self, *args, **kwargs)
821
 
        if (old_checker is not None
822
 
            and getattr(self, u"checker", None) is None):
823
 
            self.PropertyChanged(dbus.String(u"checker_running"),
824
 
                                 dbus.Boolean(False, variant_level=1))
825
 
        return r
826
 
 
827
1364
    def _reset_approved(self):
828
 
        self._approved = None
 
1365
        self.approved = None
829
1366
        return False
830
1367
    
831
1368
    def approve(self, value=True):
832
 
        self.send_changedstate()
833
 
        self._approved = value
834
 
        gobject.timeout_add(self._timedelta_to_milliseconds(self.approved_duration),
 
1369
        self.approved = value
 
1370
        gobject.timeout_add(timedelta_to_milliseconds
 
1371
                            (self.approval_duration),
835
1372
                            self._reset_approved)
836
 
    
 
1373
        self.send_changedstate()
837
1374
    
838
1375
    ## D-Bus methods, signals & properties
839
 
    _interface = u"se.bsnet.fukt.Mandos.Client"
 
1376
    _interface = "se.recompile.Mandos.Client"
 
1377
    
 
1378
    ## Interfaces
 
1379
    
 
1380
    @dbus_interface_annotations(_interface)
 
1381
    def _foo(self):
 
1382
        return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
 
1383
                     "false"}
840
1384
    
841
1385
    ## Signals
842
1386
    
843
1387
    # CheckerCompleted - signal
844
 
    @dbus.service.signal(_interface, signature=u"nxs")
 
1388
    @dbus.service.signal(_interface, signature="nxs")
845
1389
    def CheckerCompleted(self, exitcode, waitstatus, command):
846
1390
        "D-Bus signal"
847
1391
        pass
848
1392
    
849
1393
    # CheckerStarted - signal
850
 
    @dbus.service.signal(_interface, signature=u"s")
 
1394
    @dbus.service.signal(_interface, signature="s")
851
1395
    def CheckerStarted(self, command):
852
1396
        "D-Bus signal"
853
1397
        pass
854
1398
    
855
1399
    # PropertyChanged - signal
856
 
    @dbus.service.signal(_interface, signature=u"sv")
 
1400
    @dbus.service.signal(_interface, signature="sv")
857
1401
    def PropertyChanged(self, property, value):
858
1402
        "D-Bus signal"
859
1403
        pass
860
1404
    
861
1405
    # GotSecret - signal
862
 
    # XXXTEDDY Is sent after succesfull transfer of secret from mandos-server to mandos-client
863
1406
    @dbus.service.signal(_interface)
864
1407
    def GotSecret(self):
865
 
        "D-Bus signal"
 
1408
        """D-Bus signal
 
1409
        Is sent after a successful transfer of secret from the Mandos
 
1410
        server to mandos-client
 
1411
        """
866
1412
        pass
867
1413
    
868
1414
    # Rejected - signal
869
 
    @dbus.service.signal(_interface, signature=u"s")
 
1415
    @dbus.service.signal(_interface, signature="s")
870
1416
    def Rejected(self, reason):
871
1417
        "D-Bus signal"
872
1418
        pass
873
1419
    
874
1420
    # NeedApproval - signal
875
 
    @dbus.service.signal(_interface, signature=u"db")
 
1421
    @dbus.service.signal(_interface, signature="tb")
876
1422
    def NeedApproval(self, timeout, default):
877
1423
        "D-Bus signal"
878
 
        pass
 
1424
        return self.need_approval()
879
1425
    
880
1426
    ## Methods
881
 
 
 
1427
    
882
1428
    # Approve - method
883
 
    @dbus.service.method(_interface, in_signature=u"b")
 
1429
    @dbus.service.method(_interface, in_signature="b")
884
1430
    def Approve(self, value):
885
1431
        self.approve(value)
886
 
 
 
1432
    
887
1433
    # CheckedOK - method
888
1434
    @dbus.service.method(_interface)
889
1435
    def CheckedOK(self):
890
 
        return self.checked_ok()
 
1436
        self.checked_ok()
891
1437
    
892
1438
    # Enable - method
893
1439
    @dbus.service.method(_interface)
914
1460
    
915
1461
    ## Properties
916
1462
    
917
 
    # approved_pending - property
918
 
    @dbus_service_property(_interface, signature=u"b", access=u"read")
919
 
    def approved_pending_dbus_property(self):
 
1463
    # ApprovalPending - property
 
1464
    @dbus_service_property(_interface, signature="b", access="read")
 
1465
    def ApprovalPending_dbus_property(self):
920
1466
        return dbus.Boolean(bool(self.approvals_pending))
921
1467
    
922
 
    # approved_by_default - property
923
 
    @dbus_service_property(_interface, signature=u"b",
924
 
                           access=u"readwrite")
925
 
    def approved_by_default_dbus_property(self):
926
 
        return dbus.Boolean(self.approved_by_default)
927
 
    
928
 
    # approved_delay - property
929
 
    @dbus_service_property(_interface, signature=u"t",
930
 
                           access=u"readwrite")
931
 
    def approved_delay_dbus_property(self):
932
 
        return dbus.UInt64(self.approved_delay_milliseconds())
933
 
    
934
 
    # approved_duration - property
935
 
    @dbus_service_property(_interface, signature=u"t",
936
 
                           access=u"readwrite")
937
 
    def approved_duration_dbus_property(self):
938
 
        return dbus.UInt64(self._timedelta_to_milliseconds(
939
 
                self.approved_duration))
940
 
    
941
 
    # name - property
942
 
    @dbus_service_property(_interface, signature=u"s", access=u"read")
943
 
    def name_dbus_property(self):
 
1468
    # ApprovedByDefault - property
 
1469
    @dbus_service_property(_interface, signature="b",
 
1470
                           access="readwrite")
 
1471
    def ApprovedByDefault_dbus_property(self, value=None):
 
1472
        if value is None:       # get
 
1473
            return dbus.Boolean(self.approved_by_default)
 
1474
        self.approved_by_default = bool(value)
 
1475
    
 
1476
    # ApprovalDelay - property
 
1477
    @dbus_service_property(_interface, signature="t",
 
1478
                           access="readwrite")
 
1479
    def ApprovalDelay_dbus_property(self, value=None):
 
1480
        if value is None:       # get
 
1481
            return dbus.UInt64(self.approval_delay_milliseconds())
 
1482
        self.approval_delay = datetime.timedelta(0, 0, 0, value)
 
1483
    
 
1484
    # ApprovalDuration - property
 
1485
    @dbus_service_property(_interface, signature="t",
 
1486
                           access="readwrite")
 
1487
    def ApprovalDuration_dbus_property(self, value=None):
 
1488
        if value is None:       # get
 
1489
            return dbus.UInt64(timedelta_to_milliseconds(
 
1490
                    self.approval_duration))
 
1491
        self.approval_duration = datetime.timedelta(0, 0, 0, value)
 
1492
    
 
1493
    # Name - property
 
1494
    @dbus_service_property(_interface, signature="s", access="read")
 
1495
    def Name_dbus_property(self):
944
1496
        return dbus.String(self.name)
945
1497
    
946
 
    # fingerprint - property
947
 
    @dbus_service_property(_interface, signature=u"s", access=u"read")
948
 
    def fingerprint_dbus_property(self):
 
1498
    # Fingerprint - property
 
1499
    @dbus_service_property(_interface, signature="s", access="read")
 
1500
    def Fingerprint_dbus_property(self):
949
1501
        return dbus.String(self.fingerprint)
950
1502
    
951
 
    # host - property
952
 
    @dbus_service_property(_interface, signature=u"s",
953
 
                           access=u"readwrite")
954
 
    def host_dbus_property(self, value=None):
 
1503
    # Host - property
 
1504
    @dbus_service_property(_interface, signature="s",
 
1505
                           access="readwrite")
 
1506
    def Host_dbus_property(self, value=None):
955
1507
        if value is None:       # get
956
1508
            return dbus.String(self.host)
957
 
        self.host = value
958
 
        # Emit D-Bus signal
959
 
        self.PropertyChanged(dbus.String(u"host"),
960
 
                             dbus.String(value, variant_level=1))
961
 
    
962
 
    # created - property
963
 
    @dbus_service_property(_interface, signature=u"s", access=u"read")
964
 
    def created_dbus_property(self):
965
 
        return dbus.String(self._datetime_to_dbus(self.created))
966
 
    
967
 
    # last_enabled - property
968
 
    @dbus_service_property(_interface, signature=u"s", access=u"read")
969
 
    def last_enabled_dbus_property(self):
970
 
        if self.last_enabled is None:
971
 
            return dbus.String(u"")
972
 
        return dbus.String(self._datetime_to_dbus(self.last_enabled))
973
 
    
974
 
    # enabled - property
975
 
    @dbus_service_property(_interface, signature=u"b",
976
 
                           access=u"readwrite")
977
 
    def enabled_dbus_property(self, value=None):
 
1509
        self.host = unicode(value)
 
1510
    
 
1511
    # Created - property
 
1512
    @dbus_service_property(_interface, signature="s", access="read")
 
1513
    def Created_dbus_property(self):
 
1514
        return datetime_to_dbus(self.created)
 
1515
    
 
1516
    # LastEnabled - property
 
1517
    @dbus_service_property(_interface, signature="s", access="read")
 
1518
    def LastEnabled_dbus_property(self):
 
1519
        return datetime_to_dbus(self.last_enabled)
 
1520
    
 
1521
    # Enabled - property
 
1522
    @dbus_service_property(_interface, signature="b",
 
1523
                           access="readwrite")
 
1524
    def Enabled_dbus_property(self, value=None):
978
1525
        if value is None:       # get
979
1526
            return dbus.Boolean(self.enabled)
980
1527
        if value:
982
1529
        else:
983
1530
            self.disable()
984
1531
    
985
 
    # last_checked_ok - property
986
 
    @dbus_service_property(_interface, signature=u"s",
987
 
                           access=u"readwrite")
988
 
    def last_checked_ok_dbus_property(self, value=None):
 
1532
    # LastCheckedOK - property
 
1533
    @dbus_service_property(_interface, signature="s",
 
1534
                           access="readwrite")
 
1535
    def LastCheckedOK_dbus_property(self, value=None):
989
1536
        if value is not None:
990
1537
            self.checked_ok()
991
1538
            return
992
 
        if self.last_checked_ok is None:
993
 
            return dbus.String(u"")
994
 
        return dbus.String(self._datetime_to_dbus(self
995
 
                                                  .last_checked_ok))
996
 
    
997
 
    # timeout - property
998
 
    @dbus_service_property(_interface, signature=u"t",
999
 
                           access=u"readwrite")
1000
 
    def timeout_dbus_property(self, value=None):
 
1539
        return datetime_to_dbus(self.last_checked_ok)
 
1540
    
 
1541
    # LastCheckerStatus - property
 
1542
    @dbus_service_property(_interface, signature="n",
 
1543
                           access="read")
 
1544
    def LastCheckerStatus_dbus_property(self):
 
1545
        return dbus.Int16(self.last_checker_status)
 
1546
    
 
1547
    # Expires - property
 
1548
    @dbus_service_property(_interface, signature="s", access="read")
 
1549
    def Expires_dbus_property(self):
 
1550
        return datetime_to_dbus(self.expires)
 
1551
    
 
1552
    # LastApprovalRequest - property
 
1553
    @dbus_service_property(_interface, signature="s", access="read")
 
1554
    def LastApprovalRequest_dbus_property(self):
 
1555
        return datetime_to_dbus(self.last_approval_request)
 
1556
    
 
1557
    # Timeout - property
 
1558
    @dbus_service_property(_interface, signature="t",
 
1559
                           access="readwrite")
 
1560
    def Timeout_dbus_property(self, value=None):
1001
1561
        if value is None:       # get
1002
1562
            return dbus.UInt64(self.timeout_milliseconds())
 
1563
        old_timeout = self.timeout
1003
1564
        self.timeout = datetime.timedelta(0, 0, 0, value)
1004
 
        # Emit D-Bus signal
1005
 
        self.PropertyChanged(dbus.String(u"timeout"),
1006
 
                             dbus.UInt64(value, variant_level=1))
1007
 
        if getattr(self, u"disable_initiator_tag", None) is None:
1008
 
            return
1009
 
        # Reschedule timeout
1010
 
        gobject.source_remove(self.disable_initiator_tag)
1011
 
        self.disable_initiator_tag = None
1012
 
        time_to_die = (self.
1013
 
                       _timedelta_to_milliseconds((self
1014
 
                                                   .last_checked_ok
1015
 
                                                   + self.timeout)
1016
 
                                                  - datetime.datetime
1017
 
                                                  .utcnow()))
1018
 
        if time_to_die <= 0:
1019
 
            # The timeout has passed
1020
 
            self.disable()
1021
 
        else:
1022
 
            self.disable_initiator_tag = (gobject.timeout_add
1023
 
                                          (time_to_die, self.disable))
1024
 
    
1025
 
    # interval - property
1026
 
    @dbus_service_property(_interface, signature=u"t",
1027
 
                           access=u"readwrite")
1028
 
    def interval_dbus_property(self, value=None):
 
1565
        # Reschedule disabling
 
1566
        if self.enabled:
 
1567
            now = datetime.datetime.utcnow()
 
1568
            self.expires += self.timeout - old_timeout
 
1569
            if self.expires <= now:
 
1570
                # The timeout has passed
 
1571
                self.disable()
 
1572
            else:
 
1573
                if (getattr(self, "disable_initiator_tag", None)
 
1574
                    is None):
 
1575
                    return
 
1576
                gobject.source_remove(self.disable_initiator_tag)
 
1577
                self.disable_initiator_tag = (
 
1578
                    gobject.timeout_add(
 
1579
                        timedelta_to_milliseconds(self.expires - now),
 
1580
                        self.disable))
 
1581
    
 
1582
    # ExtendedTimeout - property
 
1583
    @dbus_service_property(_interface, signature="t",
 
1584
                           access="readwrite")
 
1585
    def ExtendedTimeout_dbus_property(self, value=None):
 
1586
        if value is None:       # get
 
1587
            return dbus.UInt64(self.extended_timeout_milliseconds())
 
1588
        self.extended_timeout = datetime.timedelta(0, 0, 0, value)
 
1589
    
 
1590
    # Interval - property
 
1591
    @dbus_service_property(_interface, signature="t",
 
1592
                           access="readwrite")
 
1593
    def Interval_dbus_property(self, value=None):
1029
1594
        if value is None:       # get
1030
1595
            return dbus.UInt64(self.interval_milliseconds())
1031
1596
        self.interval = datetime.timedelta(0, 0, 0, value)
1032
 
        # Emit D-Bus signal
1033
 
        self.PropertyChanged(dbus.String(u"interval"),
1034
 
                             dbus.UInt64(value, variant_level=1))
1035
 
        if getattr(self, u"checker_initiator_tag", None) is None:
 
1597
        if getattr(self, "checker_initiator_tag", None) is None:
1036
1598
            return
1037
 
        # Reschedule checker run
1038
 
        gobject.source_remove(self.checker_initiator_tag)
1039
 
        self.checker_initiator_tag = (gobject.timeout_add
1040
 
                                      (value, self.start_checker))
1041
 
        self.start_checker()    # Start one now, too
1042
 
 
1043
 
    # checker - property
1044
 
    @dbus_service_property(_interface, signature=u"s",
1045
 
                           access=u"readwrite")
1046
 
    def checker_dbus_property(self, value=None):
 
1599
        if self.enabled:
 
1600
            # Reschedule checker run
 
1601
            gobject.source_remove(self.checker_initiator_tag)
 
1602
            self.checker_initiator_tag = (gobject.timeout_add
 
1603
                                          (value, self.start_checker))
 
1604
            self.start_checker()    # Start one now, too
 
1605
    
 
1606
    # Checker - property
 
1607
    @dbus_service_property(_interface, signature="s",
 
1608
                           access="readwrite")
 
1609
    def Checker_dbus_property(self, value=None):
1047
1610
        if value is None:       # get
1048
1611
            return dbus.String(self.checker_command)
1049
 
        self.checker_command = value
1050
 
        # Emit D-Bus signal
1051
 
        self.PropertyChanged(dbus.String(u"checker"),
1052
 
                             dbus.String(self.checker_command,
1053
 
                                         variant_level=1))
 
1612
        self.checker_command = unicode(value)
1054
1613
    
1055
 
    # checker_running - property
1056
 
    @dbus_service_property(_interface, signature=u"b",
1057
 
                           access=u"readwrite")
1058
 
    def checker_running_dbus_property(self, value=None):
 
1614
    # CheckerRunning - property
 
1615
    @dbus_service_property(_interface, signature="b",
 
1616
                           access="readwrite")
 
1617
    def CheckerRunning_dbus_property(self, value=None):
1059
1618
        if value is None:       # get
1060
1619
            return dbus.Boolean(self.checker is not None)
1061
1620
        if value:
1063
1622
        else:
1064
1623
            self.stop_checker()
1065
1624
    
1066
 
    # object_path - property
1067
 
    @dbus_service_property(_interface, signature=u"o", access=u"read")
1068
 
    def object_path_dbus_property(self):
 
1625
    # ObjectPath - property
 
1626
    @dbus_service_property(_interface, signature="o", access="read")
 
1627
    def ObjectPath_dbus_property(self):
1069
1628
        return self.dbus_object_path # is already a dbus.ObjectPath
1070
1629
    
1071
 
    # secret = property
1072
 
    @dbus_service_property(_interface, signature=u"ay",
1073
 
                           access=u"write", byte_arrays=True)
1074
 
    def secret_dbus_property(self, value):
 
1630
    # Secret = property
 
1631
    @dbus_service_property(_interface, signature="ay",
 
1632
                           access="write", byte_arrays=True)
 
1633
    def Secret_dbus_property(self, value):
1075
1634
        self.secret = str(value)
1076
1635
    
1077
1636
    del _interface
1083
1642
        self._pipe.send(('init', fpr, address))
1084
1643
        if not self._pipe.recv():
1085
1644
            raise KeyError()
1086
 
 
 
1645
    
1087
1646
    def __getattribute__(self, name):
1088
 
        if(name == '_pipe'):
 
1647
        if name == '_pipe':
1089
1648
            return super(ProxyClient, self).__getattribute__(name)
1090
1649
        self._pipe.send(('getattr', name))
1091
1650
        data = self._pipe.recv()
1096
1655
                self._pipe.send(('funcall', name, args, kwargs))
1097
1656
                return self._pipe.recv()[1]
1098
1657
            return func
1099
 
 
 
1658
    
1100
1659
    def __setattr__(self, name, value):
1101
 
        if(name == '_pipe'):
 
1660
        if name == '_pipe':
1102
1661
            return super(ProxyClient, self).__setattr__(name, value)
1103
1662
        self._pipe.send(('setattr', name, value))
1104
1663
 
1111
1670
    
1112
1671
    def handle(self):
1113
1672
        with contextlib.closing(self.server.child_pipe) as child_pipe:
1114
 
            logger.info(u"TCP connection from: %s",
 
1673
            logger.info("TCP connection from: %s",
1115
1674
                        unicode(self.client_address))
1116
 
            logger.debug(u"Pipe FD: %d",
 
1675
            logger.debug("Pipe FD: %d",
1117
1676
                         self.server.child_pipe.fileno())
1118
 
 
 
1677
            
1119
1678
            session = (gnutls.connection
1120
1679
                       .ClientSession(self.request,
1121
1680
                                      gnutls.connection
1122
1681
                                      .X509Credentials()))
1123
 
 
 
1682
            
1124
1683
            # Note: gnutls.connection.X509Credentials is really a
1125
1684
            # generic GnuTLS certificate credentials object so long as
1126
1685
            # no X.509 keys are added to it.  Therefore, we can use it
1127
1686
            # here despite using OpenPGP certificates.
1128
 
 
1129
 
            #priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1130
 
            #                      u"+AES-256-CBC", u"+SHA1",
1131
 
            #                      u"+COMP-NULL", u"+CTYPE-OPENPGP",
1132
 
            #                      u"+DHE-DSS"))
 
1687
            
 
1688
            #priority = ':'.join(("NONE", "+VERS-TLS1.1",
 
1689
            #                      "+AES-256-CBC", "+SHA1",
 
1690
            #                      "+COMP-NULL", "+CTYPE-OPENPGP",
 
1691
            #                      "+DHE-DSS"))
1133
1692
            # Use a fallback default, since this MUST be set.
1134
1693
            priority = self.server.gnutls_priority
1135
1694
            if priority is None:
1136
 
                priority = u"NORMAL"
 
1695
                priority = "NORMAL"
1137
1696
            (gnutls.library.functions
1138
1697
             .gnutls_priority_set_direct(session._c_object,
1139
1698
                                         priority, None))
1140
 
 
 
1699
            
1141
1700
            # Start communication using the Mandos protocol
1142
1701
            # Get protocol number
1143
1702
            line = self.request.makefile().readline()
1144
 
            logger.debug(u"Protocol version: %r", line)
 
1703
            logger.debug("Protocol version: %r", line)
1145
1704
            try:
1146
1705
                if int(line.strip().split()[0]) > 1:
1147
 
                    raise RuntimeError
1148
 
            except (ValueError, IndexError, RuntimeError), error:
1149
 
                logger.error(u"Unknown protocol version: %s", error)
 
1706
                    raise RuntimeError(line)
 
1707
            except (ValueError, IndexError, RuntimeError) as error:
 
1708
                logger.error("Unknown protocol version: %s", error)
1150
1709
                return
1151
 
 
 
1710
            
1152
1711
            # Start GnuTLS connection
1153
1712
            try:
1154
1713
                session.handshake()
1155
 
            except gnutls.errors.GNUTLSError, error:
1156
 
                logger.warning(u"Handshake failed: %s", error)
 
1714
            except gnutls.errors.GNUTLSError as error:
 
1715
                logger.warning("Handshake failed: %s", error)
1157
1716
                # Do not run session.bye() here: the session is not
1158
1717
                # established.  Just abandon the request.
1159
1718
                return
1160
 
            logger.debug(u"Handshake succeeded")
1161
 
 
 
1719
            logger.debug("Handshake succeeded")
 
1720
            
1162
1721
            approval_required = False
1163
1722
            try:
1164
1723
                try:
1165
1724
                    fpr = self.fingerprint(self.peer_certificate
1166
1725
                                           (session))
1167
 
                except (TypeError, gnutls.errors.GNUTLSError), error:
1168
 
                    logger.warning(u"Bad certificate: %s", error)
 
1726
                except (TypeError,
 
1727
                        gnutls.errors.GNUTLSError) as error:
 
1728
                    logger.warning("Bad certificate: %s", error)
1169
1729
                    return
1170
 
                logger.debug(u"Fingerprint: %s", fpr)
1171
 
 
 
1730
                logger.debug("Fingerprint: %s", fpr)
 
1731
                
1172
1732
                try:
1173
1733
                    client = ProxyClient(child_pipe, fpr,
1174
1734
                                         self.client_address)
1175
1735
                except KeyError:
1176
1736
                    return
1177
1737
                
1178
 
                if client.approved_delay:
1179
 
                    delay = client.approved_delay
 
1738
                if client.approval_delay:
 
1739
                    delay = client.approval_delay
1180
1740
                    client.approvals_pending += 1
1181
1741
                    approval_required = True
1182
1742
                
1183
1743
                while True:
1184
1744
                    if not client.enabled:
1185
 
                        logger.warning(u"Client %s is disabled",
 
1745
                        logger.info("Client %s is disabled",
1186
1746
                                       client.name)
1187
1747
                        if self.server.use_dbus:
1188
1748
                            # Emit D-Bus signal
1189
 
                            client.Rejected("Disabled")                    
 
1749
                            client.Rejected("Disabled")
1190
1750
                        return
1191
1751
                    
1192
 
                    if client._approved or not client.approved_delay:
 
1752
                    if client.approved or not client.approval_delay:
1193
1753
                        #We are approved or approval is disabled
1194
1754
                        break
1195
 
                    elif client._approved is None:
1196
 
                        logger.info(u"Client %s need approval",
 
1755
                    elif client.approved is None:
 
1756
                        logger.info("Client %s needs approval",
1197
1757
                                    client.name)
1198
1758
                        if self.server.use_dbus:
1199
1759
                            # Emit D-Bus signal
1200
1760
                            client.NeedApproval(
1201
 
                                client.approved_delay_milliseconds(),
 
1761
                                client.approval_delay_milliseconds(),
1202
1762
                                client.approved_by_default)
1203
1763
                    else:
1204
 
                        logger.warning(u"Client %s was not approved",
 
1764
                        logger.warning("Client %s was not approved",
1205
1765
                                       client.name)
1206
1766
                        if self.server.use_dbus:
1207
1767
                            # Emit D-Bus signal
1208
 
                            client.Rejected("Disapproved")
 
1768
                            client.Rejected("Denied")
1209
1769
                        return
1210
1770
                    
1211
1771
                    #wait until timeout or approved
1212
 
                    #x = float(client._timedelta_to_milliseconds(delay))
1213
1772
                    time = datetime.datetime.now()
1214
1773
                    client.changedstate.acquire()
1215
 
                    client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
 
1774
                    client.changedstate.wait(
 
1775
                        float(timedelta_to_milliseconds(delay)
 
1776
                              / 1000))
1216
1777
                    client.changedstate.release()
1217
1778
                    time2 = datetime.datetime.now()
1218
1779
                    if (time2 - time) >= delay:
1222
1783
                                           client.name)
1223
1784
                            if self.server.use_dbus:
1224
1785
                                # Emit D-Bus signal
1225
 
                                client.Rejected("Time out")
 
1786
                                client.Rejected("Approval timed out")
1226
1787
                            return
1227
1788
                        else:
1228
1789
                            break
1231
1792
                
1232
1793
                sent_size = 0
1233
1794
                while sent_size < len(client.secret):
1234
 
                    # XXX handle session exception
1235
 
                    sent = session.send(client.secret[sent_size:])
1236
 
                    logger.debug(u"Sent: %d, remaining: %d",
 
1795
                    try:
 
1796
                        sent = session.send(client.secret[sent_size:])
 
1797
                    except gnutls.errors.GNUTLSError as error:
 
1798
                        logger.warning("gnutls send failed",
 
1799
                                       exc_info=error)
 
1800
                        return
 
1801
                    logger.debug("Sent: %d, remaining: %d",
1237
1802
                                 sent, len(client.secret)
1238
1803
                                 - (sent_size + sent))
1239
1804
                    sent_size += sent
1240
 
 
1241
 
                logger.info(u"Sending secret to %s", client.name)
1242
 
                # bump the timeout as if seen
1243
 
                client.checked_ok()
 
1805
                
 
1806
                logger.info("Sending secret to %s", client.name)
 
1807
                # bump the timeout using extended_timeout
 
1808
                client.bump_timeout(client.extended_timeout)
1244
1809
                if self.server.use_dbus:
1245
1810
                    # Emit D-Bus signal
1246
1811
                    client.GotSecret()
1248
1813
            finally:
1249
1814
                if approval_required:
1250
1815
                    client.approvals_pending -= 1
1251
 
                session.bye()
 
1816
                try:
 
1817
                    session.bye()
 
1818
                except gnutls.errors.GNUTLSError as error:
 
1819
                    logger.warning("GnuTLS bye failed",
 
1820
                                   exc_info=error)
1252
1821
    
1253
1822
    @staticmethod
1254
1823
    def peer_certificate(session):
1264
1833
                     .gnutls_certificate_get_peers
1265
1834
                     (session._c_object, ctypes.byref(list_size)))
1266
1835
        if not bool(cert_list) and list_size.value != 0:
1267
 
            raise gnutls.errors.GNUTLSError(u"error getting peer"
1268
 
                                            u" certificate")
 
1836
            raise gnutls.errors.GNUTLSError("error getting peer"
 
1837
                                            " certificate")
1269
1838
        if list_size.value == 0:
1270
1839
            return None
1271
1840
        cert = cert_list[0]
1297
1866
        if crtverify.value != 0:
1298
1867
            gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1299
1868
            raise (gnutls.errors.CertificateSecurityError
1300
 
                   (u"Verify failed"))
 
1869
                   ("Verify failed"))
1301
1870
        # New buffer for the fingerprint
1302
1871
        buf = ctypes.create_string_buffer(20)
1303
1872
        buf_len = ctypes.c_size_t()
1310
1879
        # Convert the buffer to a Python bytestring
1311
1880
        fpr = ctypes.string_at(buf, buf_len.value)
1312
1881
        # Convert the bytestring to hexadecimal notation
1313
 
        hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
 
1882
        hex_fpr = binascii.hexlify(fpr).upper()
1314
1883
        return hex_fpr
1315
1884
 
1316
1885
 
1319
1888
    def sub_process_main(self, request, address):
1320
1889
        try:
1321
1890
            self.finish_request(request, address)
1322
 
        except:
 
1891
        except Exception:
1323
1892
            self.handle_error(request, address)
1324
1893
        self.close_request(request)
1325
 
            
 
1894
    
1326
1895
    def process_request(self, request, address):
1327
1896
        """Start a new process to process the request."""
1328
 
        multiprocessing.Process(target = self.sub_process_main,
1329
 
                                args = (request, address)).start()
 
1897
        proc = multiprocessing.Process(target = self.sub_process_main,
 
1898
                                       args = (request, address))
 
1899
        proc.start()
 
1900
        return proc
 
1901
 
1330
1902
 
1331
1903
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1332
1904
    """ adds a pipe to the MixIn """
1336
1908
        This function creates a new pipe in self.pipe
1337
1909
        """
1338
1910
        parent_pipe, self.child_pipe = multiprocessing.Pipe()
1339
 
 
1340
 
        super(MultiprocessingMixInWithPipe,
1341
 
              self).process_request(request, client_address)
 
1911
        
 
1912
        proc = MultiprocessingMixIn.process_request(self, request,
 
1913
                                                    client_address)
1342
1914
        self.child_pipe.close()
1343
 
        self.add_pipe(parent_pipe)
1344
 
 
1345
 
    def add_pipe(self, parent_pipe):
 
1915
        self.add_pipe(parent_pipe, proc)
 
1916
    
 
1917
    def add_pipe(self, parent_pipe, proc):
1346
1918
        """Dummy function; override as necessary"""
1347
 
        pass
 
1919
        raise NotImplementedError()
 
1920
 
1348
1921
 
1349
1922
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1350
1923
                     socketserver.TCPServer, object):
1356
1929
        use_ipv6:       Boolean; to use IPv6 or not
1357
1930
    """
1358
1931
    def __init__(self, server_address, RequestHandlerClass,
1359
 
                 interface=None, use_ipv6=True):
 
1932
                 interface=None, use_ipv6=True, socketfd=None):
 
1933
        """If socketfd is set, use that file descriptor instead of
 
1934
        creating a new one with socket.socket().
 
1935
        """
1360
1936
        self.interface = interface
1361
1937
        if use_ipv6:
1362
1938
            self.address_family = socket.AF_INET6
 
1939
        if socketfd is not None:
 
1940
            # Save the file descriptor
 
1941
            self.socketfd = socketfd
 
1942
            # Save the original socket.socket() function
 
1943
            self.socket_socket = socket.socket
 
1944
            # To implement --socket, we monkey patch socket.socket.
 
1945
            # 
 
1946
            # (When socketserver.TCPServer is a new-style class, we
 
1947
            # could make self.socket into a property instead of monkey
 
1948
            # patching socket.socket.)
 
1949
            # 
 
1950
            # Create a one-time-only replacement for socket.socket()
 
1951
            @functools.wraps(socket.socket)
 
1952
            def socket_wrapper(*args, **kwargs):
 
1953
                # Restore original function so subsequent calls are
 
1954
                # not affected.
 
1955
                socket.socket = self.socket_socket
 
1956
                del self.socket_socket
 
1957
                # This time only, return a new socket object from the
 
1958
                # saved file descriptor.
 
1959
                return socket.fromfd(self.socketfd, *args, **kwargs)
 
1960
            # Replace socket.socket() function with wrapper
 
1961
            socket.socket = socket_wrapper
 
1962
        # The socketserver.TCPServer.__init__ will call
 
1963
        # socket.socket(), which might be our replacement,
 
1964
        # socket_wrapper(), if socketfd was set.
1363
1965
        socketserver.TCPServer.__init__(self, server_address,
1364
1966
                                        RequestHandlerClass)
 
1967
    
1365
1968
    def server_bind(self):
1366
1969
        """This overrides the normal server_bind() function
1367
1970
        to bind to an interface if one was specified, and also NOT to
1368
1971
        bind to an address or port if they were not specified."""
1369
1972
        if self.interface is not None:
1370
1973
            if SO_BINDTODEVICE is None:
1371
 
                logger.error(u"SO_BINDTODEVICE does not exist;"
1372
 
                             u" cannot bind to interface %s",
 
1974
                logger.error("SO_BINDTODEVICE does not exist;"
 
1975
                             " cannot bind to interface %s",
1373
1976
                             self.interface)
1374
1977
            else:
1375
1978
                try:
1376
1979
                    self.socket.setsockopt(socket.SOL_SOCKET,
1377
1980
                                           SO_BINDTODEVICE,
1378
 
                                           str(self.interface
1379
 
                                               + u'\0'))
1380
 
                except socket.error, error:
1381
 
                    if error[0] == errno.EPERM:
1382
 
                        logger.error(u"No permission to"
1383
 
                                     u" bind to interface %s",
1384
 
                                     self.interface)
1385
 
                    elif error[0] == errno.ENOPROTOOPT:
1386
 
                        logger.error(u"SO_BINDTODEVICE not available;"
1387
 
                                     u" cannot bind to interface %s",
1388
 
                                     self.interface)
 
1981
                                           str(self.interface + '\0'))
 
1982
                except socket.error as error:
 
1983
                    if error.errno == errno.EPERM:
 
1984
                        logger.error("No permission to bind to"
 
1985
                                     " interface %s", self.interface)
 
1986
                    elif error.errno == errno.ENOPROTOOPT:
 
1987
                        logger.error("SO_BINDTODEVICE not available;"
 
1988
                                     " cannot bind to interface %s",
 
1989
                                     self.interface)
 
1990
                    elif error.errno == errno.ENODEV:
 
1991
                        logger.error("Interface %s does not exist,"
 
1992
                                     " cannot bind", self.interface)
1389
1993
                    else:
1390
1994
                        raise
1391
1995
        # Only bind(2) the socket if we really need to.
1392
1996
        if self.server_address[0] or self.server_address[1]:
1393
1997
            if not self.server_address[0]:
1394
1998
                if self.address_family == socket.AF_INET6:
1395
 
                    any_address = u"::" # in6addr_any
 
1999
                    any_address = "::" # in6addr_any
1396
2000
                else:
1397
 
                    any_address = socket.INADDR_ANY
 
2001
                    any_address = "0.0.0.0" # INADDR_ANY
1398
2002
                self.server_address = (any_address,
1399
2003
                                       self.server_address[1])
1400
2004
            elif not self.server_address[1]:
1421
2025
    """
1422
2026
    def __init__(self, server_address, RequestHandlerClass,
1423
2027
                 interface=None, use_ipv6=True, clients=None,
1424
 
                 gnutls_priority=None, use_dbus=True):
 
2028
                 gnutls_priority=None, use_dbus=True, socketfd=None):
1425
2029
        self.enabled = False
1426
2030
        self.clients = clients
1427
2031
        if self.clients is None:
1428
 
            self.clients = set()
 
2032
            self.clients = {}
1429
2033
        self.use_dbus = use_dbus
1430
2034
        self.gnutls_priority = gnutls_priority
1431
2035
        IPv6_TCPServer.__init__(self, server_address,
1432
2036
                                RequestHandlerClass,
1433
2037
                                interface = interface,
1434
 
                                use_ipv6 = use_ipv6)
 
2038
                                use_ipv6 = use_ipv6,
 
2039
                                socketfd = socketfd)
1435
2040
    def server_activate(self):
1436
2041
        if self.enabled:
1437
2042
            return socketserver.TCPServer.server_activate(self)
 
2043
    
1438
2044
    def enable(self):
1439
2045
        self.enabled = True
1440
 
    def add_pipe(self, parent_pipe):
 
2046
    
 
2047
    def add_pipe(self, parent_pipe, proc):
1441
2048
        # Call "handle_ipc" for both data and EOF events
1442
2049
        gobject.io_add_watch(parent_pipe.fileno(),
1443
2050
                             gobject.IO_IN | gobject.IO_HUP,
1444
2051
                             functools.partial(self.handle_ipc,
1445
 
                                               parent_pipe = parent_pipe))
1446
 
        
 
2052
                                               parent_pipe =
 
2053
                                               parent_pipe,
 
2054
                                               proc = proc))
 
2055
    
1447
2056
    def handle_ipc(self, source, condition, parent_pipe=None,
1448
 
                   client_object=None):
1449
 
        condition_names = {
1450
 
            gobject.IO_IN: u"IN",   # There is data to read.
1451
 
            gobject.IO_OUT: u"OUT", # Data can be written (without
1452
 
                                    # blocking).
1453
 
            gobject.IO_PRI: u"PRI", # There is urgent data to read.
1454
 
            gobject.IO_ERR: u"ERR", # Error condition.
1455
 
            gobject.IO_HUP: u"HUP"  # Hung up (the connection has been
1456
 
                                    # broken, usually for pipes and
1457
 
                                    # sockets).
1458
 
            }
1459
 
        conditions_string = ' | '.join(name
1460
 
                                       for cond, name in
1461
 
                                       condition_names.iteritems()
1462
 
                                       if cond & condition)
1463
 
        logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1464
 
                     conditions_string)
1465
 
 
1466
 
        # XXXTEDDY error or the other end of multiprocessing.Pipe has closed
1467
 
        if condition & gobject.IO_HUP or condition & gobject.IO_ERR:
 
2057
                   proc = None, client_object=None):
 
2058
        # error, or the other end of multiprocessing.Pipe has closed
 
2059
        if condition & (gobject.IO_ERR | gobject.IO_HUP):
 
2060
            # Wait for other process to exit
 
2061
            proc.join()
1468
2062
            return False
1469
2063
        
1470
2064
        # Read a request from the child
1471
2065
        request = parent_pipe.recv()
1472
 
        logger.debug(u"IPC request: %s", repr(request))
1473
2066
        command = request[0]
1474
2067
        
1475
2068
        if command == 'init':
1476
2069
            fpr = request[1]
1477
2070
            address = request[2]
1478
2071
            
1479
 
            for c in self.clients:
 
2072
            for c in self.clients.itervalues():
1480
2073
                if c.fingerprint == fpr:
1481
2074
                    client = c
1482
2075
                    break
1483
2076
            else:
1484
 
                logger.warning(u"Client not found for fingerprint: %s, ad"
1485
 
                               u"dress: %s", fpr, address)
 
2077
                logger.info("Client not found for fingerprint: %s, ad"
 
2078
                            "dress: %s", fpr, address)
1486
2079
                if self.use_dbus:
1487
2080
                    # Emit D-Bus signal
1488
 
                    mandos_dbus_service.ClientNotFound(fpr, address)
 
2081
                    mandos_dbus_service.ClientNotFound(fpr,
 
2082
                                                       address[0])
1489
2083
                parent_pipe.send(False)
1490
2084
                return False
1491
2085
            
1492
2086
            gobject.io_add_watch(parent_pipe.fileno(),
1493
2087
                                 gobject.IO_IN | gobject.IO_HUP,
1494
2088
                                 functools.partial(self.handle_ipc,
1495
 
                                                   parent_pipe = parent_pipe,
1496
 
                                                   client_object = client))
 
2089
                                                   parent_pipe =
 
2090
                                                   parent_pipe,
 
2091
                                                   proc = proc,
 
2092
                                                   client_object =
 
2093
                                                   client))
1497
2094
            parent_pipe.send(True)
1498
 
            # remove the old hook in favor of the new above hook on same fileno
 
2095
            # remove the old hook in favor of the new above hook on
 
2096
            # same fileno
1499
2097
            return False
1500
2098
        if command == 'funcall':
1501
2099
            funcname = request[1]
1502
2100
            args = request[2]
1503
2101
            kwargs = request[3]
1504
2102
            
1505
 
            parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1506
 
 
 
2103
            parent_pipe.send(('data', getattr(client_object,
 
2104
                                              funcname)(*args,
 
2105
                                                         **kwargs)))
 
2106
        
1507
2107
        if command == 'getattr':
1508
2108
            attrname = request[1]
1509
2109
            if callable(client_object.__getattribute__(attrname)):
1510
2110
                parent_pipe.send(('function',))
1511
2111
            else:
1512
 
                parent_pipe.send(('data', client_object.__getattribute__(attrname)))
 
2112
                parent_pipe.send(('data', client_object
 
2113
                                  .__getattribute__(attrname)))
1513
2114
        
1514
2115
        if command == 'setattr':
1515
2116
            attrname = request[1]
1516
2117
            value = request[2]
1517
2118
            setattr(client_object, attrname, value)
1518
 
 
 
2119
        
1519
2120
        return True
1520
2121
 
1521
2122
 
 
2123
def rfc3339_duration_to_delta(duration):
 
2124
    """Parse an RFC 3339 "duration" and return a datetime.timedelta
 
2125
    
 
2126
    >>> rfc3339_duration_to_delta("P7D")
 
2127
    datetime.timedelta(7)
 
2128
    >>> rfc3339_duration_to_delta("PT60S")
 
2129
    datetime.timedelta(0, 60)
 
2130
    >>> rfc3339_duration_to_delta("PT60M")
 
2131
    datetime.timedelta(0, 3600)
 
2132
    >>> rfc3339_duration_to_delta("PT24H")
 
2133
    datetime.timedelta(1)
 
2134
    >>> rfc3339_duration_to_delta("P1W")
 
2135
    datetime.timedelta(7)
 
2136
    >>> rfc3339_duration_to_delta("PT5M30S")
 
2137
    datetime.timedelta(0, 330)
 
2138
    >>> rfc3339_duration_to_delta("P1DT3M20S")
 
2139
    datetime.timedelta(1, 200)
 
2140
    """
 
2141
    
 
2142
    # Parsing an RFC 3339 duration with regular expressions is not
 
2143
    # possible - there would have to be multiple places for the same
 
2144
    # values, like seconds.  The current code, while more esoteric, is
 
2145
    # cleaner without depending on a parsing library.  If Python had a
 
2146
    # built-in library for parsing we would use it, but we'd like to
 
2147
    # avoid excessive use of external libraries.
 
2148
    
 
2149
    # New type for defining tokens, syntax, and semantics all-in-one
 
2150
    Token = collections.namedtuple("Token",
 
2151
                                   ("regexp", # To match token; if
 
2152
                                              # "value" is not None,
 
2153
                                              # must have a "group"
 
2154
                                              # containing digits
 
2155
                                    "value",  # datetime.timedelta or
 
2156
                                              # None
 
2157
                                    "followers")) # Tokens valid after
 
2158
                                                  # this token
 
2159
    # RFC 3339 "duration" tokens, syntax, and semantics; taken from
 
2160
    # the "duration" ABNF definition in RFC 3339, Appendix A.
 
2161
    token_end = Token(re.compile(r"$"), None, frozenset())
 
2162
    token_second = Token(re.compile(r"(\d+)S"),
 
2163
                         datetime.timedelta(seconds=1),
 
2164
                         frozenset((token_end,)))
 
2165
    token_minute = Token(re.compile(r"(\d+)M"),
 
2166
                         datetime.timedelta(minutes=1),
 
2167
                         frozenset((token_second, token_end)))
 
2168
    token_hour = Token(re.compile(r"(\d+)H"),
 
2169
                       datetime.timedelta(hours=1),
 
2170
                       frozenset((token_minute, token_end)))
 
2171
    token_time = Token(re.compile(r"T"),
 
2172
                       None,
 
2173
                       frozenset((token_hour, token_minute,
 
2174
                                  token_second)))
 
2175
    token_day = Token(re.compile(r"(\d+)D"),
 
2176
                      datetime.timedelta(days=1),
 
2177
                      frozenset((token_time, token_end)))
 
2178
    token_month = Token(re.compile(r"(\d+)M"),
 
2179
                        datetime.timedelta(weeks=4),
 
2180
                        frozenset((token_day, token_end)))
 
2181
    token_year = Token(re.compile(r"(\d+)Y"),
 
2182
                       datetime.timedelta(weeks=52),
 
2183
                       frozenset((token_month, token_end)))
 
2184
    token_week = Token(re.compile(r"(\d+)W"),
 
2185
                       datetime.timedelta(weeks=1),
 
2186
                       frozenset((token_end,)))
 
2187
    token_duration = Token(re.compile(r"P"), None,
 
2188
                           frozenset((token_year, token_month,
 
2189
                                      token_day, token_time,
 
2190
                                      token_week))),
 
2191
    # Define starting values
 
2192
    value = datetime.timedelta() # Value so far
 
2193
    found_token = None
 
2194
    followers = frozenset(token_duration,) # Following valid tokens
 
2195
    s = duration                # String left to parse
 
2196
    # Loop until end token is found
 
2197
    while found_token is not token_end:
 
2198
        # Search for any currently valid tokens
 
2199
        for token in followers:
 
2200
            match = token.regexp.match(s)
 
2201
            if match is not None:
 
2202
                # Token found
 
2203
                if token.value is not None:
 
2204
                    # Value found, parse digits
 
2205
                    factor = int(match.group(1), 10)
 
2206
                    # Add to value so far
 
2207
                    value += factor * token.value
 
2208
                # Strip token from string
 
2209
                s = token.regexp.sub("", s, 1)
 
2210
                # Go to found token
 
2211
                found_token = token
 
2212
                # Set valid next tokens
 
2213
                followers = found_token.followers
 
2214
                break
 
2215
        else:
 
2216
            # No currently valid tokens were found
 
2217
            raise ValueError("Invalid RFC 3339 duration")
 
2218
    # End token found
 
2219
    return value
 
2220
 
 
2221
 
1522
2222
def string_to_delta(interval):
1523
2223
    """Parse a string and return a datetime.timedelta
1524
2224
    
1525
 
    >>> string_to_delta(u'7d')
 
2225
    >>> string_to_delta('7d')
1526
2226
    datetime.timedelta(7)
1527
 
    >>> string_to_delta(u'60s')
 
2227
    >>> string_to_delta('60s')
1528
2228
    datetime.timedelta(0, 60)
1529
 
    >>> string_to_delta(u'60m')
 
2229
    >>> string_to_delta('60m')
1530
2230
    datetime.timedelta(0, 3600)
1531
 
    >>> string_to_delta(u'24h')
 
2231
    >>> string_to_delta('24h')
1532
2232
    datetime.timedelta(1)
1533
 
    >>> string_to_delta(u'1w')
 
2233
    >>> string_to_delta('1w')
1534
2234
    datetime.timedelta(7)
1535
 
    >>> string_to_delta(u'5m 30s')
 
2235
    >>> string_to_delta('5m 30s')
1536
2236
    datetime.timedelta(0, 330)
1537
2237
    """
 
2238
    
 
2239
    try:
 
2240
        return rfc3339_duration_to_delta(interval)
 
2241
    except ValueError:
 
2242
        pass
 
2243
    
1538
2244
    timevalue = datetime.timedelta(0)
1539
2245
    for s in interval.split():
1540
2246
        try:
1541
2247
            suffix = unicode(s[-1])
1542
2248
            value = int(s[:-1])
1543
 
            if suffix == u"d":
 
2249
            if suffix == "d":
1544
2250
                delta = datetime.timedelta(value)
1545
 
            elif suffix == u"s":
 
2251
            elif suffix == "s":
1546
2252
                delta = datetime.timedelta(0, value)
1547
 
            elif suffix == u"m":
 
2253
            elif suffix == "m":
1548
2254
                delta = datetime.timedelta(0, 0, 0, 0, value)
1549
 
            elif suffix == u"h":
 
2255
            elif suffix == "h":
1550
2256
                delta = datetime.timedelta(0, 0, 0, 0, 0, value)
1551
 
            elif suffix == u"w":
 
2257
            elif suffix == "w":
1552
2258
                delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1553
2259
            else:
1554
 
                raise ValueError(u"Unknown suffix %r" % suffix)
1555
 
        except (ValueError, IndexError), e:
1556
 
            raise ValueError(e.message)
 
2260
                raise ValueError("Unknown suffix {0!r}"
 
2261
                                 .format(suffix))
 
2262
        except IndexError as e:
 
2263
            raise ValueError(*(e.args))
1557
2264
        timevalue += delta
1558
2265
    return timevalue
1559
2266
 
1560
2267
 
1561
 
def if_nametoindex(interface):
1562
 
    """Call the C function if_nametoindex(), or equivalent
1563
 
    
1564
 
    Note: This function cannot accept a unicode string."""
1565
 
    global if_nametoindex
1566
 
    try:
1567
 
        if_nametoindex = (ctypes.cdll.LoadLibrary
1568
 
                          (ctypes.util.find_library(u"c"))
1569
 
                          .if_nametoindex)
1570
 
    except (OSError, AttributeError):
1571
 
        logger.warning(u"Doing if_nametoindex the hard way")
1572
 
        def if_nametoindex(interface):
1573
 
            "Get an interface index the hard way, i.e. using fcntl()"
1574
 
            SIOCGIFINDEX = 0x8933  # From /usr/include/linux/sockios.h
1575
 
            with contextlib.closing(socket.socket()) as s:
1576
 
                ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1577
 
                                    struct.pack(str(u"16s16x"),
1578
 
                                                interface))
1579
 
            interface_index = struct.unpack(str(u"I"),
1580
 
                                            ifreq[16:20])[0]
1581
 
            return interface_index
1582
 
    return if_nametoindex(interface)
1583
 
 
1584
 
 
1585
2268
def daemon(nochdir = False, noclose = False):
1586
2269
    """See daemon(3).  Standard BSD Unix function.
1587
2270
    
1590
2273
        sys.exit()
1591
2274
    os.setsid()
1592
2275
    if not nochdir:
1593
 
        os.chdir(u"/")
 
2276
        os.chdir("/")
1594
2277
    if os.fork():
1595
2278
        sys.exit()
1596
2279
    if not noclose:
1597
2280
        # Close all standard open file descriptors
1598
 
        null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
 
2281
        null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1599
2282
        if not stat.S_ISCHR(os.fstat(null).st_mode):
1600
2283
            raise OSError(errno.ENODEV,
1601
 
                          u"%s not a character device"
1602
 
                          % os.path.devnull)
 
2284
                          "{0} not a character device"
 
2285
                          .format(os.devnull))
1603
2286
        os.dup2(null, sys.stdin.fileno())
1604
2287
        os.dup2(null, sys.stdout.fileno())
1605
2288
        os.dup2(null, sys.stderr.fileno())
1612
2295
    ##################################################################
1613
2296
    # Parsing of options, both command line and config file
1614
2297
    
1615
 
    parser = optparse.OptionParser(version = "%%prog %s" % version)
1616
 
    parser.add_option("-i", u"--interface", type=u"string",
1617
 
                      metavar="IF", help=u"Bind to interface IF")
1618
 
    parser.add_option("-a", u"--address", type=u"string",
1619
 
                      help=u"Address to listen for requests on")
1620
 
    parser.add_option("-p", u"--port", type=u"int",
1621
 
                      help=u"Port number to receive requests on")
1622
 
    parser.add_option("--check", action=u"store_true",
1623
 
                      help=u"Run self-test")
1624
 
    parser.add_option("--debug", action=u"store_true",
1625
 
                      help=u"Debug mode; run in foreground and log to"
1626
 
                      u" terminal")
1627
 
    parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1628
 
                      u" priority string (see GnuTLS documentation)")
1629
 
    parser.add_option("--servicename", type=u"string",
1630
 
                      metavar=u"NAME", help=u"Zeroconf service name")
1631
 
    parser.add_option("--configdir", type=u"string",
1632
 
                      default=u"/etc/mandos", metavar=u"DIR",
1633
 
                      help=u"Directory to search for configuration"
1634
 
                      u" files")
1635
 
    parser.add_option("--no-dbus", action=u"store_false",
1636
 
                      dest=u"use_dbus", help=u"Do not provide D-Bus"
1637
 
                      u" system bus interface")
1638
 
    parser.add_option("--no-ipv6", action=u"store_false",
1639
 
                      dest=u"use_ipv6", help=u"Do not use IPv6")
1640
 
    options = parser.parse_args()[0]
 
2298
    parser = argparse.ArgumentParser()
 
2299
    parser.add_argument("-v", "--version", action="version",
 
2300
                        version = "%(prog)s {0}".format(version),
 
2301
                        help="show version number and exit")
 
2302
    parser.add_argument("-i", "--interface", metavar="IF",
 
2303
                        help="Bind to interface IF")
 
2304
    parser.add_argument("-a", "--address",
 
2305
                        help="Address to listen for requests on")
 
2306
    parser.add_argument("-p", "--port", type=int,
 
2307
                        help="Port number to receive requests on")
 
2308
    parser.add_argument("--check", action="store_true",
 
2309
                        help="Run self-test")
 
2310
    parser.add_argument("--debug", action="store_true",
 
2311
                        help="Debug mode; run in foreground and log"
 
2312
                        " to terminal", default=None)
 
2313
    parser.add_argument("--debuglevel", metavar="LEVEL",
 
2314
                        help="Debug level for stdout output")
 
2315
    parser.add_argument("--priority", help="GnuTLS"
 
2316
                        " priority string (see GnuTLS documentation)")
 
2317
    parser.add_argument("--servicename",
 
2318
                        metavar="NAME", help="Zeroconf service name")
 
2319
    parser.add_argument("--configdir",
 
2320
                        default="/etc/mandos", metavar="DIR",
 
2321
                        help="Directory to search for configuration"
 
2322
                        " files")
 
2323
    parser.add_argument("--no-dbus", action="store_false",
 
2324
                        dest="use_dbus", help="Do not provide D-Bus"
 
2325
                        " system bus interface", default=None)
 
2326
    parser.add_argument("--no-ipv6", action="store_false",
 
2327
                        dest="use_ipv6", help="Do not use IPv6",
 
2328
                        default=None)
 
2329
    parser.add_argument("--no-restore", action="store_false",
 
2330
                        dest="restore", help="Do not restore stored"
 
2331
                        " state", default=None)
 
2332
    parser.add_argument("--socket", type=int,
 
2333
                        help="Specify a file descriptor to a network"
 
2334
                        " socket to use instead of creating one")
 
2335
    parser.add_argument("--statedir", metavar="DIR",
 
2336
                        help="Directory to save/restore state in")
 
2337
    parser.add_argument("--foreground", action="store_true",
 
2338
                        help="Run in foreground", default=None)
 
2339
    
 
2340
    options = parser.parse_args()
1641
2341
    
1642
2342
    if options.check:
1643
2343
        import doctest
1644
 
        doctest.testmod()
1645
 
        sys.exit()
 
2344
        fail_count, test_count = doctest.testmod()
 
2345
        sys.exit(os.EX_OK if fail_count == 0 else 1)
1646
2346
    
1647
2347
    # Default values for config file for server-global settings
1648
 
    server_defaults = { u"interface": u"",
1649
 
                        u"address": u"",
1650
 
                        u"port": u"",
1651
 
                        u"debug": u"False",
1652
 
                        u"priority":
1653
 
                        u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1654
 
                        u"servicename": u"Mandos",
1655
 
                        u"use_dbus": u"True",
1656
 
                        u"use_ipv6": u"True",
 
2348
    server_defaults = { "interface": "",
 
2349
                        "address": "",
 
2350
                        "port": "",
 
2351
                        "debug": "False",
 
2352
                        "priority":
 
2353
                        "SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
 
2354
                        "servicename": "Mandos",
 
2355
                        "use_dbus": "True",
 
2356
                        "use_ipv6": "True",
 
2357
                        "debuglevel": "",
 
2358
                        "restore": "True",
 
2359
                        "socket": "",
 
2360
                        "statedir": "/var/lib/mandos",
 
2361
                        "foreground": "False",
1657
2362
                        }
1658
2363
    
1659
2364
    # Parse config file for server-global settings
1660
2365
    server_config = configparser.SafeConfigParser(server_defaults)
1661
2366
    del server_defaults
1662
2367
    server_config.read(os.path.join(options.configdir,
1663
 
                                    u"mandos.conf"))
 
2368
                                    "mandos.conf"))
1664
2369
    # Convert the SafeConfigParser object to a dict
1665
2370
    server_settings = server_config.defaults()
1666
2371
    # Use the appropriate methods on the non-string config options
1667
 
    for option in (u"debug", u"use_dbus", u"use_ipv6"):
1668
 
        server_settings[option] = server_config.getboolean(u"DEFAULT",
 
2372
    for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
 
2373
        server_settings[option] = server_config.getboolean("DEFAULT",
1669
2374
                                                           option)
1670
2375
    if server_settings["port"]:
1671
 
        server_settings["port"] = server_config.getint(u"DEFAULT",
1672
 
                                                       u"port")
 
2376
        server_settings["port"] = server_config.getint("DEFAULT",
 
2377
                                                       "port")
 
2378
    if server_settings["socket"]:
 
2379
        server_settings["socket"] = server_config.getint("DEFAULT",
 
2380
                                                         "socket")
 
2381
        # Later, stdin will, and stdout and stderr might, be dup'ed
 
2382
        # over with an opened os.devnull.  But we don't want this to
 
2383
        # happen with a supplied network socket.
 
2384
        if 0 <= server_settings["socket"] <= 2:
 
2385
            server_settings["socket"] = os.dup(server_settings
 
2386
                                               ["socket"])
1673
2387
    del server_config
1674
2388
    
1675
2389
    # Override the settings from the config file with command line
1676
2390
    # options, if set.
1677
 
    for option in (u"interface", u"address", u"port", u"debug",
1678
 
                   u"priority", u"servicename", u"configdir",
1679
 
                   u"use_dbus", u"use_ipv6"):
 
2391
    for option in ("interface", "address", "port", "debug",
 
2392
                   "priority", "servicename", "configdir",
 
2393
                   "use_dbus", "use_ipv6", "debuglevel", "restore",
 
2394
                   "statedir", "socket", "foreground"):
1680
2395
        value = getattr(options, option)
1681
2396
        if value is not None:
1682
2397
            server_settings[option] = value
1685
2400
    for option in server_settings.keys():
1686
2401
        if type(server_settings[option]) is str:
1687
2402
            server_settings[option] = unicode(server_settings[option])
 
2403
    # Force all boolean options to be boolean
 
2404
    for option in ("debug", "use_dbus", "use_ipv6", "restore",
 
2405
                   "foreground"):
 
2406
        server_settings[option] = bool(server_settings[option])
 
2407
    # Debug implies foreground
 
2408
    if server_settings["debug"]:
 
2409
        server_settings["foreground"] = True
1688
2410
    # Now we have our good server settings in "server_settings"
1689
2411
    
1690
2412
    ##################################################################
1691
2413
    
1692
2414
    # For convenience
1693
 
    debug = server_settings[u"debug"]
1694
 
    use_dbus = server_settings[u"use_dbus"]
1695
 
    use_ipv6 = server_settings[u"use_ipv6"]
1696
 
    
1697
 
    if not debug:
1698
 
        syslogger.setLevel(logging.WARNING)
1699
 
        console.setLevel(logging.WARNING)
1700
 
    
1701
 
    if server_settings[u"servicename"] != u"Mandos":
 
2415
    debug = server_settings["debug"]
 
2416
    debuglevel = server_settings["debuglevel"]
 
2417
    use_dbus = server_settings["use_dbus"]
 
2418
    use_ipv6 = server_settings["use_ipv6"]
 
2419
    stored_state_path = os.path.join(server_settings["statedir"],
 
2420
                                     stored_state_file)
 
2421
    foreground = server_settings["foreground"]
 
2422
    
 
2423
    if debug:
 
2424
        initlogger(debug, logging.DEBUG)
 
2425
    else:
 
2426
        if not debuglevel:
 
2427
            initlogger(debug)
 
2428
        else:
 
2429
            level = getattr(logging, debuglevel.upper())
 
2430
            initlogger(debug, level)
 
2431
    
 
2432
    if server_settings["servicename"] != "Mandos":
1702
2433
        syslogger.setFormatter(logging.Formatter
1703
 
                               (u'Mandos (%s) [%%(process)d]:'
1704
 
                                u' %%(levelname)s: %%(message)s'
1705
 
                                % server_settings[u"servicename"]))
 
2434
                               ('Mandos ({0}) [%(process)d]:'
 
2435
                                ' %(levelname)s: %(message)s'
 
2436
                                .format(server_settings
 
2437
                                        ["servicename"])))
1706
2438
    
1707
2439
    # Parse config file with clients
1708
 
    client_defaults = { u"timeout": u"1h",
1709
 
                        u"interval": u"5m",
1710
 
                        u"checker": u"fping -q -- %%(host)s",
1711
 
                        u"host": u"",
1712
 
                        u"approved_delay": u"0s",
1713
 
                        u"approved_duration": u"1s",
1714
 
                        }
1715
 
    client_config = configparser.SafeConfigParser(client_defaults)
1716
 
    client_config.read(os.path.join(server_settings[u"configdir"],
1717
 
                                    u"clients.conf"))
 
2440
    client_config = configparser.SafeConfigParser(Client
 
2441
                                                  .client_defaults)
 
2442
    client_config.read(os.path.join(server_settings["configdir"],
 
2443
                                    "clients.conf"))
1718
2444
    
1719
2445
    global mandos_dbus_service
1720
2446
    mandos_dbus_service = None
1721
2447
    
1722
 
    tcp_server = MandosServer((server_settings[u"address"],
1723
 
                               server_settings[u"port"]),
 
2448
    tcp_server = MandosServer((server_settings["address"],
 
2449
                               server_settings["port"]),
1724
2450
                              ClientHandler,
1725
 
                              interface=server_settings[u"interface"],
 
2451
                              interface=(server_settings["interface"]
 
2452
                                         or None),
1726
2453
                              use_ipv6=use_ipv6,
1727
2454
                              gnutls_priority=
1728
 
                              server_settings[u"priority"],
1729
 
                              use_dbus=use_dbus)
1730
 
    pidfilename = u"/var/run/mandos.pid"
1731
 
    try:
1732
 
        pidfile = open(pidfilename, u"w")
1733
 
    except IOError:
1734
 
        logger.error(u"Could not open file %r", pidfilename)
 
2455
                              server_settings["priority"],
 
2456
                              use_dbus=use_dbus,
 
2457
                              socketfd=(server_settings["socket"]
 
2458
                                        or None))
 
2459
    if not foreground:
 
2460
        pidfilename = "/run/mandos.pid"
 
2461
        if not os.path.isdir("/run/."):
 
2462
            pidfilename = "/var/run/mandos.pid"
 
2463
        pidfile = None
 
2464
        try:
 
2465
            pidfile = open(pidfilename, "w")
 
2466
        except IOError as e:
 
2467
            logger.error("Could not open file %r", pidfilename,
 
2468
                         exc_info=e)
1735
2469
    
1736
 
    try:
1737
 
        uid = pwd.getpwnam(u"_mandos").pw_uid
1738
 
        gid = pwd.getpwnam(u"_mandos").pw_gid
1739
 
    except KeyError:
 
2470
    for name in ("_mandos", "mandos", "nobody"):
1740
2471
        try:
1741
 
            uid = pwd.getpwnam(u"mandos").pw_uid
1742
 
            gid = pwd.getpwnam(u"mandos").pw_gid
 
2472
            uid = pwd.getpwnam(name).pw_uid
 
2473
            gid = pwd.getpwnam(name).pw_gid
 
2474
            break
1743
2475
        except KeyError:
1744
 
            try:
1745
 
                uid = pwd.getpwnam(u"nobody").pw_uid
1746
 
                gid = pwd.getpwnam(u"nobody").pw_gid
1747
 
            except KeyError:
1748
 
                uid = 65534
1749
 
                gid = 65534
 
2476
            continue
 
2477
    else:
 
2478
        uid = 65534
 
2479
        gid = 65534
1750
2480
    try:
1751
2481
        os.setgid(gid)
1752
2482
        os.setuid(uid)
1753
 
    except OSError, error:
1754
 
        if error[0] != errno.EPERM:
1755
 
            raise error
 
2483
    except OSError as error:
 
2484
        if error.errno != errno.EPERM:
 
2485
            raise
1756
2486
    
1757
 
    # Enable all possible GnuTLS debugging
1758
2487
    if debug:
 
2488
        # Enable all possible GnuTLS debugging
 
2489
        
1759
2490
        # "Use a log level over 10 to enable all debugging options."
1760
2491
        # - GnuTLS manual
1761
2492
        gnutls.library.functions.gnutls_global_set_log_level(11)
1762
2493
        
1763
2494
        @gnutls.library.types.gnutls_log_func
1764
2495
        def debug_gnutls(level, string):
1765
 
            logger.debug(u"GnuTLS: %s", string[:-1])
 
2496
            logger.debug("GnuTLS: %s", string[:-1])
1766
2497
        
1767
2498
        (gnutls.library.functions
1768
2499
         .gnutls_global_set_log_function(debug_gnutls))
 
2500
        
 
2501
        # Redirect stdin so all checkers get /dev/null
 
2502
        null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
 
2503
        os.dup2(null, sys.stdin.fileno())
 
2504
        if null > 2:
 
2505
            os.close(null)
 
2506
    
 
2507
    # Need to fork before connecting to D-Bus
 
2508
    if not foreground:
 
2509
        # Close all input and output, do double fork, etc.
 
2510
        daemon()
 
2511
    
 
2512
    # multiprocessing will use threads, so before we use gobject we
 
2513
    # need to inform gobject that threads will be used.
 
2514
    gobject.threads_init()
1769
2515
    
1770
2516
    global main_loop
1771
2517
    # From the Avahi example code
1772
 
    DBusGMainLoop(set_as_default=True )
 
2518
    DBusGMainLoop(set_as_default=True)
1773
2519
    main_loop = gobject.MainLoop()
1774
2520
    bus = dbus.SystemBus()
1775
2521
    # End of Avahi example code
1776
2522
    if use_dbus:
1777
2523
        try:
1778
 
            bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
 
2524
            bus_name = dbus.service.BusName("se.recompile.Mandos",
1779
2525
                                            bus, do_not_queue=True)
1780
 
        except dbus.exceptions.NameExistsException, e:
1781
 
            logger.error(unicode(e) + u", disabling D-Bus")
 
2526
            old_bus_name = (dbus.service.BusName
 
2527
                            ("se.bsnet.fukt.Mandos", bus,
 
2528
                             do_not_queue=True))
 
2529
        except dbus.exceptions.NameExistsException as e:
 
2530
            logger.error("Disabling D-Bus:", exc_info=e)
1782
2531
            use_dbus = False
1783
 
            server_settings[u"use_dbus"] = False
 
2532
            server_settings["use_dbus"] = False
1784
2533
            tcp_server.use_dbus = False
1785
2534
    protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1786
 
    service = AvahiService(name = server_settings[u"servicename"],
1787
 
                           servicetype = u"_mandos._tcp",
1788
 
                           protocol = protocol, bus = bus)
 
2535
    service = AvahiServiceToSyslog(name =
 
2536
                                   server_settings["servicename"],
 
2537
                                   servicetype = "_mandos._tcp",
 
2538
                                   protocol = protocol, bus = bus)
1789
2539
    if server_settings["interface"]:
1790
2540
        service.interface = (if_nametoindex
1791
 
                             (str(server_settings[u"interface"])))
1792
 
 
 
2541
                             (str(server_settings["interface"])))
 
2542
    
1793
2543
    global multiprocessing_manager
1794
2544
    multiprocessing_manager = multiprocessing.Manager()
1795
2545
    
1796
2546
    client_class = Client
1797
2547
    if use_dbus:
1798
2548
        client_class = functools.partial(ClientDBus, bus = bus)
1799
 
    def client_config_items(config, section):
1800
 
        special_settings = {
1801
 
            "approved_by_default":
1802
 
                lambda: config.getboolean(section,
1803
 
                                          "approved_by_default"),
1804
 
            }
1805
 
        for name, value in config.items(section):
 
2549
    
 
2550
    client_settings = Client.config_parser(client_config)
 
2551
    old_client_settings = {}
 
2552
    clients_data = {}
 
2553
    
 
2554
    # This is used to redirect stdout and stderr for checker processes
 
2555
    global wnull
 
2556
    wnull = open(os.devnull, "w") # A writable /dev/null
 
2557
    # Only used if server is running in foreground but not in debug
 
2558
    # mode
 
2559
    if debug or not foreground:
 
2560
        wnull.close()
 
2561
    
 
2562
    # Get client data and settings from last running state.
 
2563
    if server_settings["restore"]:
 
2564
        try:
 
2565
            with open(stored_state_path, "rb") as stored_state:
 
2566
                clients_data, old_client_settings = (pickle.load
 
2567
                                                     (stored_state))
 
2568
            os.remove(stored_state_path)
 
2569
        except IOError as e:
 
2570
            if e.errno == errno.ENOENT:
 
2571
                logger.warning("Could not load persistent state: {0}"
 
2572
                                .format(os.strerror(e.errno)))
 
2573
            else:
 
2574
                logger.critical("Could not load persistent state:",
 
2575
                                exc_info=e)
 
2576
                raise
 
2577
        except EOFError as e:
 
2578
            logger.warning("Could not load persistent state: "
 
2579
                           "EOFError:", exc_info=e)
 
2580
    
 
2581
    with PGPEngine() as pgp:
 
2582
        for client_name, client in clients_data.iteritems():
 
2583
            # Skip removed clients
 
2584
            if client_name not in client_settings:
 
2585
                continue
 
2586
            
 
2587
            # Decide which value to use after restoring saved state.
 
2588
            # We have three different values: Old config file,
 
2589
            # new config file, and saved state.
 
2590
            # New config value takes precedence if it differs from old
 
2591
            # config value, otherwise use saved state.
 
2592
            for name, value in client_settings[client_name].items():
 
2593
                try:
 
2594
                    # For each value in new config, check if it
 
2595
                    # differs from the old config value (Except for
 
2596
                    # the "secret" attribute)
 
2597
                    if (name != "secret" and
 
2598
                        value != old_client_settings[client_name]
 
2599
                        [name]):
 
2600
                        client[name] = value
 
2601
                except KeyError:
 
2602
                    pass
 
2603
            
 
2604
            # Clients who has passed its expire date can still be
 
2605
            # enabled if its last checker was successful.  Clients
 
2606
            # whose checker succeeded before we stored its state is
 
2607
            # assumed to have successfully run all checkers during
 
2608
            # downtime.
 
2609
            if client["enabled"]:
 
2610
                if datetime.datetime.utcnow() >= client["expires"]:
 
2611
                    if not client["last_checked_ok"]:
 
2612
                        logger.warning(
 
2613
                            "disabling client {0} - Client never "
 
2614
                            "performed a successful checker"
 
2615
                            .format(client_name))
 
2616
                        client["enabled"] = False
 
2617
                    elif client["last_checker_status"] != 0:
 
2618
                        logger.warning(
 
2619
                            "disabling client {0} - Client "
 
2620
                            "last checker failed with error code {1}"
 
2621
                            .format(client_name,
 
2622
                                    client["last_checker_status"]))
 
2623
                        client["enabled"] = False
 
2624
                    else:
 
2625
                        client["expires"] = (datetime.datetime
 
2626
                                             .utcnow()
 
2627
                                             + client["timeout"])
 
2628
                        logger.debug("Last checker succeeded,"
 
2629
                                     " keeping {0} enabled"
 
2630
                                     .format(client_name))
1806
2631
            try:
1807
 
                yield (name, special_settings[name]())
1808
 
            except KeyError:
1809
 
                yield (name, value)
1810
 
    
1811
 
    tcp_server.clients.update(set(
1812
 
            client_class(name = section,
1813
 
                         config= dict(client_config_items(
1814
 
                        client_config, section)))
1815
 
            for section in client_config.sections()))
 
2632
                client["secret"] = (
 
2633
                    pgp.decrypt(client["encrypted_secret"],
 
2634
                                client_settings[client_name]
 
2635
                                ["secret"]))
 
2636
            except PGPError:
 
2637
                # If decryption fails, we use secret from new settings
 
2638
                logger.debug("Failed to decrypt {0} old secret"
 
2639
                             .format(client_name))
 
2640
                client["secret"] = (
 
2641
                    client_settings[client_name]["secret"])
 
2642
    
 
2643
    # Add/remove clients based on new changes made to config
 
2644
    for client_name in (set(old_client_settings)
 
2645
                        - set(client_settings)):
 
2646
        del clients_data[client_name]
 
2647
    for client_name in (set(client_settings)
 
2648
                        - set(old_client_settings)):
 
2649
        clients_data[client_name] = client_settings[client_name]
 
2650
    
 
2651
    # Create all client objects
 
2652
    for client_name, client in clients_data.iteritems():
 
2653
        tcp_server.clients[client_name] = client_class(
 
2654
            name = client_name, settings = client,
 
2655
            server_settings = server_settings)
 
2656
    
1816
2657
    if not tcp_server.clients:
1817
 
        logger.warning(u"No clients defined")
1818
 
    
1819
 
    if debug:
1820
 
        # Redirect stdin so all checkers get /dev/null
1821
 
        null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1822
 
        os.dup2(null, sys.stdin.fileno())
1823
 
        if null > 2:
1824
 
            os.close(null)
1825
 
    else:
1826
 
        # No console logging
1827
 
        logger.removeHandler(console)
1828
 
        # Close all input and output, do double fork, etc.
1829
 
        daemon()
1830
 
    
1831
 
    try:
1832
 
        with pidfile:
1833
 
            pid = os.getpid()
1834
 
            pidfile.write(str(pid) + "\n")
 
2658
        logger.warning("No clients defined")
 
2659
    
 
2660
    if not foreground:
 
2661
        if pidfile is not None:
 
2662
            try:
 
2663
                with pidfile:
 
2664
                    pid = os.getpid()
 
2665
                    pidfile.write(str(pid) + "\n".encode("utf-8"))
 
2666
            except IOError:
 
2667
                logger.error("Could not write to file %r with PID %d",
 
2668
                             pidfilename, pid)
1835
2669
        del pidfile
1836
 
    except IOError:
1837
 
        logger.error(u"Could not write to file %r with PID %d",
1838
 
                     pidfilename, pid)
1839
 
    except NameError:
1840
 
        # "pidfile" was never created
1841
 
        pass
1842
 
    del pidfilename
 
2670
        del pidfilename
1843
2671
    
1844
 
    if not debug:
1845
 
        signal.signal(signal.SIGINT, signal.SIG_IGN)
1846
2672
    signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1847
2673
    signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1848
2674
    
1849
2675
    if use_dbus:
1850
 
        class MandosDBusService(dbus.service.Object):
 
2676
        @alternate_dbus_interfaces({"se.recompile.Mandos":
 
2677
                                        "se.bsnet.fukt.Mandos"})
 
2678
        class MandosDBusService(DBusObjectWithProperties):
1851
2679
            """A D-Bus proxy object"""
1852
2680
            def __init__(self):
1853
 
                dbus.service.Object.__init__(self, bus, u"/")
1854
 
            _interface = u"se.bsnet.fukt.Mandos"
1855
 
            
1856
 
            @dbus.service.signal(_interface, signature=u"o")
 
2681
                dbus.service.Object.__init__(self, bus, "/")
 
2682
            _interface = "se.recompile.Mandos"
 
2683
            
 
2684
            @dbus_interface_annotations(_interface)
 
2685
            def _foo(self):
 
2686
                return { "org.freedesktop.DBus.Property"
 
2687
                         ".EmitsChangedSignal":
 
2688
                             "false"}
 
2689
            
 
2690
            @dbus.service.signal(_interface, signature="o")
1857
2691
            def ClientAdded(self, objpath):
1858
2692
                "D-Bus signal"
1859
2693
                pass
1860
2694
            
1861
 
            @dbus.service.signal(_interface, signature=u"ss")
 
2695
            @dbus.service.signal(_interface, signature="ss")
1862
2696
            def ClientNotFound(self, fingerprint, address):
1863
2697
                "D-Bus signal"
1864
2698
                pass
1865
2699
            
1866
 
            @dbus.service.signal(_interface, signature=u"os")
 
2700
            @dbus.service.signal(_interface, signature="os")
1867
2701
            def ClientRemoved(self, objpath, name):
1868
2702
                "D-Bus signal"
1869
2703
                pass
1870
2704
            
1871
 
            @dbus.service.method(_interface, out_signature=u"ao")
 
2705
            @dbus.service.method(_interface, out_signature="ao")
1872
2706
            def GetAllClients(self):
1873
2707
                "D-Bus method"
1874
2708
                return dbus.Array(c.dbus_object_path
1875
 
                                  for c in tcp_server.clients)
 
2709
                                  for c in
 
2710
                                  tcp_server.clients.itervalues())
1876
2711
            
1877
2712
            @dbus.service.method(_interface,
1878
 
                                 out_signature=u"a{oa{sv}}")
 
2713
                                 out_signature="a{oa{sv}}")
1879
2714
            def GetAllClientsWithProperties(self):
1880
2715
                "D-Bus method"
1881
2716
                return dbus.Dictionary(
1882
 
                    ((c.dbus_object_path, c.GetAll(u""))
1883
 
                     for c in tcp_server.clients),
1884
 
                    signature=u"oa{sv}")
 
2717
                    ((c.dbus_object_path, c.GetAll(""))
 
2718
                     for c in tcp_server.clients.itervalues()),
 
2719
                    signature="oa{sv}")
1885
2720
            
1886
 
            @dbus.service.method(_interface, in_signature=u"o")
 
2721
            @dbus.service.method(_interface, in_signature="o")
1887
2722
            def RemoveClient(self, object_path):
1888
2723
                "D-Bus method"
1889
 
                for c in tcp_server.clients:
 
2724
                for c in tcp_server.clients.itervalues():
1890
2725
                    if c.dbus_object_path == object_path:
1891
 
                        tcp_server.clients.remove(c)
 
2726
                        del tcp_server.clients[c.name]
1892
2727
                        c.remove_from_connection()
1893
2728
                        # Don't signal anything except ClientRemoved
1894
2729
                        c.disable(quiet=True)
1905
2740
        "Cleanup function; run on exit"
1906
2741
        service.cleanup()
1907
2742
        
 
2743
        multiprocessing.active_children()
 
2744
        wnull.close()
 
2745
        if not (tcp_server.clients or client_settings):
 
2746
            return
 
2747
        
 
2748
        # Store client before exiting. Secrets are encrypted with key
 
2749
        # based on what config file has. If config file is
 
2750
        # removed/edited, old secret will thus be unrecovable.
 
2751
        clients = {}
 
2752
        with PGPEngine() as pgp:
 
2753
            for client in tcp_server.clients.itervalues():
 
2754
                key = client_settings[client.name]["secret"]
 
2755
                client.encrypted_secret = pgp.encrypt(client.secret,
 
2756
                                                      key)
 
2757
                client_dict = {}
 
2758
                
 
2759
                # A list of attributes that can not be pickled
 
2760
                # + secret.
 
2761
                exclude = set(("bus", "changedstate", "secret",
 
2762
                               "checker", "server_settings"))
 
2763
                for name, typ in (inspect.getmembers
 
2764
                                  (dbus.service.Object)):
 
2765
                    exclude.add(name)
 
2766
                
 
2767
                client_dict["encrypted_secret"] = (client
 
2768
                                                   .encrypted_secret)
 
2769
                for attr in client.client_structure:
 
2770
                    if attr not in exclude:
 
2771
                        client_dict[attr] = getattr(client, attr)
 
2772
                
 
2773
                clients[client.name] = client_dict
 
2774
                del client_settings[client.name]["secret"]
 
2775
        
 
2776
        try:
 
2777
            with (tempfile.NamedTemporaryFile
 
2778
                  (mode='wb', suffix=".pickle", prefix='clients-',
 
2779
                   dir=os.path.dirname(stored_state_path),
 
2780
                   delete=False)) as stored_state:
 
2781
                pickle.dump((clients, client_settings), stored_state)
 
2782
                tempname=stored_state.name
 
2783
            os.rename(tempname, stored_state_path)
 
2784
        except (IOError, OSError) as e:
 
2785
            if not debug:
 
2786
                try:
 
2787
                    os.remove(tempname)
 
2788
                except NameError:
 
2789
                    pass
 
2790
            if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
 
2791
                logger.warning("Could not save persistent state: {0}"
 
2792
                               .format(os.strerror(e.errno)))
 
2793
            else:
 
2794
                logger.warning("Could not save persistent state:",
 
2795
                               exc_info=e)
 
2796
                raise
 
2797
        
 
2798
        # Delete all clients, and settings from config
1908
2799
        while tcp_server.clients:
1909
 
            client = tcp_server.clients.pop()
 
2800
            name, client = tcp_server.clients.popitem()
1910
2801
            if use_dbus:
1911
2802
                client.remove_from_connection()
1912
 
            client.disable_hook = None
1913
2803
            # Don't signal anything except ClientRemoved
1914
2804
            client.disable(quiet=True)
1915
2805
            if use_dbus:
1916
2806
                # Emit D-Bus signal
1917
 
                mandos_dbus_service.ClientRemoved(client.dbus_object_path,
 
2807
                mandos_dbus_service.ClientRemoved(client
 
2808
                                                  .dbus_object_path,
1918
2809
                                                  client.name)
 
2810
        client_settings.clear()
1919
2811
    
1920
2812
    atexit.register(cleanup)
1921
2813
    
1922
 
    for client in tcp_server.clients:
 
2814
    for client in tcp_server.clients.itervalues():
1923
2815
        if use_dbus:
1924
2816
            # Emit D-Bus signal
1925
2817
            mandos_dbus_service.ClientAdded(client.dbus_object_path)
1926
 
        client.enable()
 
2818
        # Need to initiate checking of clients
 
2819
        if client.enabled:
 
2820
            client.init_checker()
1927
2821
    
1928
2822
    tcp_server.enable()
1929
2823
    tcp_server.server_activate()
1931
2825
    # Find out what port we got
1932
2826
    service.port = tcp_server.socket.getsockname()[1]
1933
2827
    if use_ipv6:
1934
 
        logger.info(u"Now listening on address %r, port %d,"
1935
 
                    " flowinfo %d, scope_id %d"
1936
 
                    % tcp_server.socket.getsockname())
 
2828
        logger.info("Now listening on address %r, port %d,"
 
2829
                    " flowinfo %d, scope_id %d",
 
2830
                    *tcp_server.socket.getsockname())
1937
2831
    else:                       # IPv4
1938
 
        logger.info(u"Now listening on address %r, port %d"
1939
 
                    % tcp_server.socket.getsockname())
 
2832
        logger.info("Now listening on address %r, port %d",
 
2833
                    *tcp_server.socket.getsockname())
1940
2834
    
1941
2835
    #service.interface = tcp_server.socket.getsockname()[3]
1942
2836
    
1944
2838
        # From the Avahi example code
1945
2839
        try:
1946
2840
            service.activate()
1947
 
        except dbus.exceptions.DBusException, error:
1948
 
            logger.critical(u"DBusException: %s", error)
 
2841
        except dbus.exceptions.DBusException as error:
 
2842
            logger.critical("D-Bus Exception", exc_info=error)
1949
2843
            cleanup()
1950
2844
            sys.exit(1)
1951
2845
        # End of Avahi example code
1955
2849
                             (tcp_server.handle_request
1956
2850
                              (*args[2:], **kwargs) or True))
1957
2851
        
1958
 
        logger.debug(u"Starting main loop")
 
2852
        logger.debug("Starting main loop")
1959
2853
        main_loop.run()
1960
 
    except AvahiError, error:
1961
 
        logger.critical(u"AvahiError: %s", error)
 
2854
    except AvahiError as error:
 
2855
        logger.critical("Avahi Error", exc_info=error)
1962
2856
        cleanup()
1963
2857
        sys.exit(1)
1964
2858
    except KeyboardInterrupt:
1965
2859
        if debug:
1966
 
            print >> sys.stderr
1967
 
        logger.debug(u"Server received KeyboardInterrupt")
1968
 
    logger.debug(u"Server exiting")
 
2860
            print("", file=sys.stderr)
 
2861
        logger.debug("Server received KeyboardInterrupt")
 
2862
    logger.debug("Server exiting")
1969
2863
    # Must run before the D-Bus bus name gets deregistered
1970
2864
    cleanup()
1971
2865