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  • Committer: Teddy Hogeborn
  • Date: 2008-08-07 21:45:41 UTC
  • Revision ID: teddy@fukt.bsnet.se-20080807214541-pyg8itw6kphz1dy5
* plugbasedclient.c: Renamed to "mandos-client.c".  All users changed.

* plugins.d/mandosclient.c: Renamed to "plugins.d/password-request.c".
                            All users changed.

* plugins.d/passprompt.c: Renamed to "plugins.d/password-prompt.c".
                          All users changed.

* server.conf: Renamed to "mandos.conf".  All users changed.

* server.py: Renamed to "mandos".
  (daemon): Have default values for arguments. Caller changed.

* Makefile (distclean, mostlyclean, maintainer-clean): New aliases for
                                                       "clean".
  (check, run-client, run-server): New.

* network-protocol.txt: New.

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added added

removed removed

Lines of Context:
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# and some lines in "main".
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# Everything else is
14
 
# Copyright © 2008,2009 Teddy Hogeborn
15
 
# Copyright © 2008,2009 Björn Påhlsson
 
14
# Copyright © 2007-2008 Teddy Hogeborn & Björn Påhlsson
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# This program is free software: you can redistribute it and/or modify
18
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# it under the terms of the GNU General Public License as published by
25
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#     GNU General Public License for more details.
26
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27
26
# You should have received a copy of the GNU General Public License
28
 
# along with this program.  If not, see
29
 
# <http://www.gnu.org/licenses/>.
 
27
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
30
28
31
29
# Contact the authors at <mandos@fukt.bsnet.se>.
32
30
33
31
 
34
 
from __future__ import division, with_statement, absolute_import
 
32
from __future__ import division
35
33
 
36
34
import SocketServer
37
35
import socket
 
36
import select
38
37
from optparse import OptionParser
39
38
import datetime
40
39
import errno
55
54
import stat
56
55
import logging
57
56
import logging.handlers
58
 
import pwd
59
 
from contextlib import closing
60
57
 
61
58
import dbus
62
 
import dbus.service
63
59
import gobject
64
60
import avahi
65
61
from dbus.mainloop.glib import DBusGMainLoop
66
62
import ctypes
67
 
import ctypes.util
68
63
 
69
 
version = "1.0.3"
70
64
 
71
65
logger = logging.Logger('mandos')
72
 
syslogger = (logging.handlers.SysLogHandler
73
 
             (facility = logging.handlers.SysLogHandler.LOG_DAEMON,
74
 
              address = "/dev/log"))
75
 
syslogger.setFormatter(logging.Formatter
76
 
                       ('Mandos: %(levelname)s: %(message)s'))
 
66
syslogger = logging.handlers.SysLogHandler\
 
67
            (facility = logging.handlers.SysLogHandler.LOG_DAEMON)
 
68
syslogger.setFormatter(logging.Formatter\
 
69
                        ('%(levelname)s: %(message)s'))
77
70
logger.addHandler(syslogger)
 
71
del syslogger
78
72
 
79
 
console = logging.StreamHandler()
80
 
console.setFormatter(logging.Formatter('%(name)s: %(levelname)s:'
81
 
                                       ' %(message)s'))
82
 
logger.addHandler(console)
83
73
 
84
74
class AvahiError(Exception):
85
 
    def __init__(self, value, *args, **kwargs):
 
75
    def __init__(self, value):
86
76
        self.value = value
87
 
        super(AvahiError, self).__init__(value, *args, **kwargs)
88
 
    def __unicode__(self):
89
 
        return unicode(repr(self.value))
 
77
    def __str__(self):
 
78
        return repr(self.value)
90
79
 
91
80
class AvahiServiceError(AvahiError):
92
81
    pass
112
101
                  a sensible number of times
113
102
    """
114
103
    def __init__(self, interface = avahi.IF_UNSPEC, name = None,
115
 
                 servicetype = None, port = None, TXT = None,
116
 
                 domain = "", host = "", max_renames = 32768):
 
104
                 type = None, port = None, TXT = None, domain = "",
 
105
                 host = "", max_renames = 12):
117
106
        self.interface = interface
118
107
        self.name = name
119
 
        self.type = servicetype
 
108
        self.type = type
120
109
        self.port = port
121
 
        self.TXT = TXT if TXT is not None else []
 
110
        if TXT is None:
 
111
            self.TXT = []
 
112
        else:
 
113
            self.TXT = TXT
122
114
        self.domain = domain
123
115
        self.host = host
124
116
        self.rename_count = 0
125
 
        self.max_renames = max_renames
126
117
    def rename(self):
127
118
        """Derived from the Avahi example code"""
128
119
        if self.rename_count >= self.max_renames:
129
 
            logger.critical(u"No suitable Zeroconf service name found"
130
 
                            u" after %i retries, exiting.",
131
 
                            self.rename_count)
132
 
            raise AvahiServiceError(u"Too many renames")
133
 
        self.name = server.GetAlternativeServiceName(self.name)
134
 
        logger.info(u"Changing Zeroconf service name to %r ...",
135
 
                    str(self.name))
136
 
        syslogger.setFormatter(logging.Formatter
137
 
                               ('Mandos (%s): %%(levelname)s:'
138
 
                                ' %%(message)s' % self.name))
 
120
            logger.critical(u"No suitable service name found after %i"
 
121
                            u" retries, exiting.", rename_count)
 
122
            raise AvahiServiceError("Too many renames")
 
123
        name = server.GetAlternativeServiceName(name)
 
124
        logger.error(u"Changing name to %r ...", name)
139
125
        self.remove()
140
126
        self.add()
141
127
        self.rename_count += 1
147
133
        """Derived from the Avahi example code"""
148
134
        global group
149
135
        if group is None:
150
 
            group = dbus.Interface(bus.get_object
151
 
                                   (avahi.DBUS_NAME,
 
136
            group = dbus.Interface\
 
137
                    (bus.get_object(avahi.DBUS_NAME,
152
138
                                    server.EntryGroupNew()),
153
 
                                   avahi.DBUS_INTERFACE_ENTRY_GROUP)
 
139
                     avahi.DBUS_INTERFACE_ENTRY_GROUP)
154
140
            group.connect_to_signal('StateChanged',
155
141
                                    entry_group_state_changed)
156
 
        logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
 
142
        logger.debug(u"Adding service '%s' of type '%s' ...",
157
143
                     service.name, service.type)
158
144
        group.AddService(
159
145
                self.interface,         # interface
170
156
# End of Avahi example code
171
157
 
172
158
 
173
 
def _datetime_to_dbus(dt, variant_level=0):
174
 
    """Convert a UTC datetime.datetime() to a D-Bus type."""
175
 
    return dbus.String(dt.isoformat(), variant_level=variant_level)
176
 
 
177
 
 
178
 
class Client(dbus.service.Object):
 
159
class Client(object):
179
160
    """A representation of a client host served by this server.
180
161
    Attributes:
181
 
    name:       string; from the config file, used in log messages
 
162
    name:      string; from the config file, used in log messages
182
163
    fingerprint: string (40 or 32 hexadecimal digits); used to
183
164
                 uniquely identify the client
184
 
    secret:     bytestring; sent verbatim (over TLS) to client
185
 
    host:       string; available for use by the checker command
186
 
    created:    datetime.datetime(); (UTC) object creation
187
 
    last_enabled: datetime.datetime(); (UTC)
188
 
    enabled:    bool()
189
 
    last_checked_ok: datetime.datetime(); (UTC) or None
190
 
    timeout:    datetime.timedelta(); How long from last_checked_ok
191
 
                                      until this client is invalid
192
 
    interval:   datetime.timedelta(); How often to start a new checker
193
 
    disable_hook:  If set, called by disable() as disable_hook(self)
194
 
    checker:    subprocess.Popen(); a running checker process used
195
 
                                    to see if the client lives.
196
 
                                    'None' if no process is running.
 
165
    secret:    bytestring; sent verbatim (over TLS) to client
 
166
    fqdn:      string (FQDN); available for use by the checker command
 
167
    created:   datetime.datetime(); object creation, not client host
 
168
    last_checked_ok: datetime.datetime() or None if not yet checked OK
 
169
    timeout:   datetime.timedelta(); How long from last_checked_ok
 
170
                                     until this client is invalid
 
171
    interval:  datetime.timedelta(); How often to start a new checker
 
172
    stop_hook: If set, called by stop() as stop_hook(self)
 
173
    checker:   subprocess.Popen(); a running checker process used
 
174
                                   to see if the client lives.
 
175
                                   'None' if no process is running.
197
176
    checker_initiator_tag: a gobject event source tag, or None
198
 
    disable_initiator_tag:    - '' -
 
177
    stop_initiator_tag:    - '' -
199
178
    checker_callback_tag:  - '' -
200
179
    checker_command: string; External command which is run to check if
201
180
                     client lives.  %() expansions are done at
202
181
                     runtime with vars(self) as dict, so that for
203
182
                     instance %(name)s can be used in the command.
204
 
    use_dbus: bool(); Whether to provide D-Bus interface and signals
205
 
    dbus_object_path: dbus.ObjectPath ; only set if self.use_dbus
 
183
    Private attibutes:
 
184
    _timeout: Real variable for 'timeout'
 
185
    _interval: Real variable for 'interval'
 
186
    _timeout_milliseconds: Used when calling gobject.timeout_add()
 
187
    _interval_milliseconds: - '' -
206
188
    """
207
 
    def timeout_milliseconds(self):
208
 
        "Return the 'timeout' attribute in milliseconds"
209
 
        return ((self.timeout.days * 24 * 60 * 60 * 1000)
210
 
                + (self.timeout.seconds * 1000)
211
 
                + (self.timeout.microseconds // 1000))
212
 
    
213
 
    def interval_milliseconds(self):
214
 
        "Return the 'interval' attribute in milliseconds"
215
 
        return ((self.interval.days * 24 * 60 * 60 * 1000)
216
 
                + (self.interval.seconds * 1000)
217
 
                + (self.interval.microseconds // 1000))
218
 
    
219
 
    def __init__(self, name = None, disable_hook=None, config=None,
220
 
                 use_dbus=True):
 
189
    def _set_timeout(self, timeout):
 
190
        "Setter function for 'timeout' attribute"
 
191
        self._timeout = timeout
 
192
        self._timeout_milliseconds = ((self.timeout.days
 
193
                                       * 24 * 60 * 60 * 1000)
 
194
                                      + (self.timeout.seconds * 1000)
 
195
                                      + (self.timeout.microseconds
 
196
                                         // 1000))
 
197
    timeout = property(lambda self: self._timeout,
 
198
                       _set_timeout)
 
199
    del _set_timeout
 
200
    def _set_interval(self, interval):
 
201
        "Setter function for 'interval' attribute"
 
202
        self._interval = interval
 
203
        self._interval_milliseconds = ((self.interval.days
 
204
                                        * 24 * 60 * 60 * 1000)
 
205
                                       + (self.interval.seconds
 
206
                                          * 1000)
 
207
                                       + (self.interval.microseconds
 
208
                                          // 1000))
 
209
    interval = property(lambda self: self._interval,
 
210
                        _set_interval)
 
211
    del _set_interval
 
212
    def __init__(self, name = None, stop_hook=None, config={}):
221
213
        """Note: the 'checker' key in 'config' sets the
222
214
        'checker_command' attribute and *not* the 'checker'
223
215
        attribute."""
224
216
        self.name = name
225
 
        if config is None:
226
 
            config = {}
227
217
        logger.debug(u"Creating client %r", self.name)
228
 
        self.use_dbus = use_dbus
229
 
        if self.use_dbus:
230
 
            self.dbus_object_path = (dbus.ObjectPath
231
 
                                     ("/Mandos/clients/"
232
 
                                      + self.name.replace(".", "_")))
233
 
            dbus.service.Object.__init__(self, bus,
234
 
                                         self.dbus_object_path)
235
218
        # Uppercase and remove spaces from fingerprint for later
236
219
        # comparison purposes with return value from the fingerprint()
237
220
        # function
238
 
        self.fingerprint = (config["fingerprint"].upper()
239
 
                            .replace(u" ", u""))
 
221
        self.fingerprint = config["fingerprint"].upper()\
 
222
                           .replace(u" ", u"")
240
223
        logger.debug(u"  Fingerprint: %s", self.fingerprint)
241
224
        if "secret" in config:
242
225
            self.secret = config["secret"].decode(u"base64")
243
226
        elif "secfile" in config:
244
 
            with closing(open(os.path.expanduser
245
 
                              (os.path.expandvars
246
 
                               (config["secfile"])))) as secfile:
247
 
                self.secret = secfile.read()
 
227
            sf = open(config["secfile"])
 
228
            self.secret = sf.read()
 
229
            sf.close()
248
230
        else:
249
231
            raise TypeError(u"No secret or secfile for client %s"
250
232
                            % self.name)
251
 
        self.host = config.get("host", "")
252
 
        self.created = datetime.datetime.utcnow()
253
 
        self.enabled = False
254
 
        self.last_enabled = None
 
233
        self.fqdn = config.get("fqdn", "")
 
234
        self.created = datetime.datetime.now()
255
235
        self.last_checked_ok = None
256
236
        self.timeout = string_to_delta(config["timeout"])
257
237
        self.interval = string_to_delta(config["interval"])
258
 
        self.disable_hook = disable_hook
 
238
        self.stop_hook = stop_hook
259
239
        self.checker = None
260
240
        self.checker_initiator_tag = None
261
 
        self.disable_initiator_tag = None
 
241
        self.stop_initiator_tag = None
262
242
        self.checker_callback_tag = None
263
 
        self.checker_command = config["checker"]
264
 
    
265
 
    def enable(self):
 
243
        self.check_command = config["checker"]
 
244
    def start(self):
266
245
        """Start this client's checker and timeout hooks"""
267
 
        self.last_enabled = datetime.datetime.utcnow()
268
246
        # Schedule a new checker to be started an 'interval' from now,
269
247
        # and every interval from then on.
270
 
        self.checker_initiator_tag = (gobject.timeout_add
271
 
                                      (self.interval_milliseconds(),
272
 
                                       self.start_checker))
 
248
        self.checker_initiator_tag = gobject.timeout_add\
 
249
                                     (self._interval_milliseconds,
 
250
                                      self.start_checker)
273
251
        # Also start a new checker *right now*.
274
252
        self.start_checker()
275
 
        # Schedule a disable() when 'timeout' has passed
276
 
        self.disable_initiator_tag = (gobject.timeout_add
277
 
                                   (self.timeout_milliseconds(),
278
 
                                    self.disable))
279
 
        self.enabled = True
280
 
        if self.use_dbus:
281
 
            # Emit D-Bus signals
282
 
            self.PropertyChanged(dbus.String(u"enabled"),
283
 
                                 dbus.Boolean(True, variant_level=1))
284
 
            self.PropertyChanged(dbus.String(u"last_enabled"),
285
 
                                 (_datetime_to_dbus(self.last_enabled,
286
 
                                                    variant_level=1)))
287
 
    
288
 
    def disable(self):
289
 
        """Disable this client."""
290
 
        if not getattr(self, "enabled", False):
 
253
        # Schedule a stop() when 'timeout' has passed
 
254
        self.stop_initiator_tag = gobject.timeout_add\
 
255
                                  (self._timeout_milliseconds,
 
256
                                   self.stop)
 
257
    def stop(self):
 
258
        """Stop this client.
 
259
        The possibility that a client might be restarted is left open,
 
260
        but not currently used."""
 
261
        # If this client doesn't have a secret, it is already stopped.
 
262
        if self.secret:
 
263
            logger.info(u"Stopping client %s", self.name)
 
264
            self.secret = None
 
265
        else:
291
266
            return False
292
 
        logger.info(u"Disabling client %s", self.name)
293
 
        if getattr(self, "disable_initiator_tag", False):
294
 
            gobject.source_remove(self.disable_initiator_tag)
295
 
            self.disable_initiator_tag = None
 
267
        if getattr(self, "stop_initiator_tag", False):
 
268
            gobject.source_remove(self.stop_initiator_tag)
 
269
            self.stop_initiator_tag = None
296
270
        if getattr(self, "checker_initiator_tag", False):
297
271
            gobject.source_remove(self.checker_initiator_tag)
298
272
            self.checker_initiator_tag = None
299
273
        self.stop_checker()
300
 
        if self.disable_hook:
301
 
            self.disable_hook(self)
302
 
        self.enabled = False
303
 
        if self.use_dbus:
304
 
            # Emit D-Bus signal
305
 
            self.PropertyChanged(dbus.String(u"enabled"),
306
 
                                 dbus.Boolean(False, variant_level=1))
 
274
        if self.stop_hook:
 
275
            self.stop_hook(self)
307
276
        # Do not run this again if called by a gobject.timeout_add
308
277
        return False
309
 
    
310
278
    def __del__(self):
311
 
        self.disable_hook = None
312
 
        self.disable()
313
 
    
314
 
    def checker_callback(self, pid, condition, command):
 
279
        self.stop_hook = None
 
280
        self.stop()
 
281
    def checker_callback(self, pid, condition):
315
282
        """The checker has completed, so take appropriate actions."""
 
283
        now = datetime.datetime.now()
316
284
        self.checker_callback_tag = None
317
285
        self.checker = None
318
 
        if self.use_dbus:
319
 
            # Emit D-Bus signal
320
 
            self.PropertyChanged(dbus.String(u"checker_running"),
321
 
                                 dbus.Boolean(False, variant_level=1))
322
 
        if (os.WIFEXITED(condition)
323
 
            and (os.WEXITSTATUS(condition) == 0)):
 
286
        if os.WIFEXITED(condition) \
 
287
               and (os.WEXITSTATUS(condition) == 0):
324
288
            logger.info(u"Checker for %(name)s succeeded",
325
289
                        vars(self))
326
 
            if self.use_dbus:
327
 
                # Emit D-Bus signal
328
 
                self.CheckerCompleted(dbus.Boolean(True),
329
 
                                      dbus.UInt16(condition),
330
 
                                      dbus.String(command))
331
 
            self.bump_timeout()
 
290
            self.last_checked_ok = now
 
291
            gobject.source_remove(self.stop_initiator_tag)
 
292
            self.stop_initiator_tag = gobject.timeout_add\
 
293
                                      (self._timeout_milliseconds,
 
294
                                       self.stop)
332
295
        elif not os.WIFEXITED(condition):
333
296
            logger.warning(u"Checker for %(name)s crashed?",
334
297
                           vars(self))
335
 
            if self.use_dbus:
336
 
                # Emit D-Bus signal
337
 
                self.CheckerCompleted(dbus.Boolean(False),
338
 
                                      dbus.UInt16(condition),
339
 
                                      dbus.String(command))
340
298
        else:
341
299
            logger.info(u"Checker for %(name)s failed",
342
300
                        vars(self))
343
 
            if self.use_dbus:
344
 
                # Emit D-Bus signal
345
 
                self.CheckerCompleted(dbus.Boolean(False),
346
 
                                      dbus.UInt16(condition),
347
 
                                      dbus.String(command))
348
 
    
349
 
    def bump_timeout(self):
350
 
        """Bump up the timeout for this client.
351
 
        This should only be called when the client has been seen,
352
 
        alive and well.
353
 
        """
354
 
        self.last_checked_ok = datetime.datetime.utcnow()
355
 
        gobject.source_remove(self.disable_initiator_tag)
356
 
        self.disable_initiator_tag = (gobject.timeout_add
357
 
                                      (self.timeout_milliseconds(),
358
 
                                       self.disable))
359
 
        if self.use_dbus:
360
 
            # Emit D-Bus signal
361
 
            self.PropertyChanged(
362
 
                dbus.String(u"last_checked_ok"),
363
 
                (_datetime_to_dbus(self.last_checked_ok,
364
 
                                   variant_level=1)))
365
 
    
366
301
    def start_checker(self):
367
302
        """Start a new checker subprocess if one is not running.
368
303
        If a checker already exists, leave it running and do
377
312
        # is as it should be.
378
313
        if self.checker is None:
379
314
            try:
380
 
                # In case checker_command has exactly one % operator
381
 
                command = self.checker_command % self.host
 
315
                # In case check_command has exactly one % operator
 
316
                command = self.check_command % self.fqdn
382
317
            except TypeError:
383
318
                # Escape attributes for the shell
384
319
                escaped_attrs = dict((key, re.escape(str(val)))
385
320
                                     for key, val in
386
321
                                     vars(self).iteritems())
387
322
                try:
388
 
                    command = self.checker_command % escaped_attrs
 
323
                    command = self.check_command % escaped_attrs
389
324
                except TypeError, error:
390
325
                    logger.error(u'Could not format string "%s":'
391
 
                                 u' %s', self.checker_command, error)
 
326
                                 u' %s', self.check_command, error)
392
327
                    return True # Try again later
393
328
            try:
394
329
                logger.info(u"Starting checker %r for %s",
395
330
                            command, self.name)
396
 
                # We don't need to redirect stdout and stderr, since
397
 
                # in normal mode, that is already done by daemon(),
398
 
                # and in debug mode we don't want to.  (Stdin is
399
 
                # always replaced by /dev/null.)
400
331
                self.checker = subprocess.Popen(command,
401
332
                                                close_fds=True,
402
333
                                                shell=True, cwd="/")
403
 
                if self.use_dbus:
404
 
                    # Emit D-Bus signal
405
 
                    self.CheckerStarted(command)
406
 
                    self.PropertyChanged(
407
 
                        dbus.String("checker_running"),
408
 
                        dbus.Boolean(True, variant_level=1))
409
 
                self.checker_callback_tag = (gobject.child_watch_add
410
 
                                             (self.checker.pid,
411
 
                                              self.checker_callback,
412
 
                                              data=command))
413
 
            except OSError, error:
 
334
                self.checker_callback_tag = gobject.child_watch_add\
 
335
                                            (self.checker.pid,
 
336
                                             self.checker_callback)
 
337
            except subprocess.OSError, error:
414
338
                logger.error(u"Failed to start subprocess: %s",
415
339
                             error)
416
340
        # Re-run this periodically if run by gobject.timeout_add
417
341
        return True
418
 
    
419
342
    def stop_checker(self):
420
343
        """Force the checker process, if any, to stop."""
421
344
        if self.checker_callback_tag:
423
346
            self.checker_callback_tag = None
424
347
        if getattr(self, "checker", None) is None:
425
348
            return
426
 
        logger.debug(u"Stopping checker for %(name)s", vars(self))
 
349
        logger.debug("Stopping checker for %(name)s", vars(self))
427
350
        try:
428
351
            os.kill(self.checker.pid, signal.SIGTERM)
429
352
            #os.sleep(0.5)
433
356
            if error.errno != errno.ESRCH: # No such process
434
357
                raise
435
358
        self.checker = None
436
 
        if self.use_dbus:
437
 
            self.PropertyChanged(dbus.String(u"checker_running"),
438
 
                                 dbus.Boolean(False, variant_level=1))
439
 
    
440
359
    def still_valid(self):
441
360
        """Has the timeout not yet passed for this client?"""
442
 
        if not getattr(self, "enabled", False):
443
 
            return False
444
 
        now = datetime.datetime.utcnow()
 
361
        now = datetime.datetime.now()
445
362
        if self.last_checked_ok is None:
446
363
            return now < (self.created + self.timeout)
447
364
        else:
448
365
            return now < (self.last_checked_ok + self.timeout)
449
 
    
450
 
    ## D-Bus methods & signals
451
 
    _interface = u"org.mandos_system.Mandos.Client"
452
 
    
453
 
    # BumpTimeout - method
454
 
    BumpTimeout = dbus.service.method(_interface)(bump_timeout)
455
 
    BumpTimeout.__name__ = "BumpTimeout"
456
 
    
457
 
    # CheckerCompleted - signal
458
 
    @dbus.service.signal(_interface, signature="bqs")
459
 
    def CheckerCompleted(self, success, condition, command):
460
 
        "D-Bus signal"
461
 
        pass
462
 
    
463
 
    # CheckerStarted - signal
464
 
    @dbus.service.signal(_interface, signature="s")
465
 
    def CheckerStarted(self, command):
466
 
        "D-Bus signal"
467
 
        pass
468
 
    
469
 
    # GetAllProperties - method
470
 
    @dbus.service.method(_interface, out_signature="a{sv}")
471
 
    def GetAllProperties(self):
472
 
        "D-Bus method"
473
 
        return dbus.Dictionary({
474
 
                dbus.String("name"):
475
 
                    dbus.String(self.name, variant_level=1),
476
 
                dbus.String("fingerprint"):
477
 
                    dbus.String(self.fingerprint, variant_level=1),
478
 
                dbus.String("host"):
479
 
                    dbus.String(self.host, variant_level=1),
480
 
                dbus.String("created"):
481
 
                    _datetime_to_dbus(self.created, variant_level=1),
482
 
                dbus.String("last_enabled"):
483
 
                    (_datetime_to_dbus(self.last_enabled,
484
 
                                       variant_level=1)
485
 
                     if self.last_enabled is not None
486
 
                     else dbus.Boolean(False, variant_level=1)),
487
 
                dbus.String("enabled"):
488
 
                    dbus.Boolean(self.enabled, variant_level=1),
489
 
                dbus.String("last_checked_ok"):
490
 
                    (_datetime_to_dbus(self.last_checked_ok,
491
 
                                       variant_level=1)
492
 
                     if self.last_checked_ok is not None
493
 
                     else dbus.Boolean (False, variant_level=1)),
494
 
                dbus.String("timeout"):
495
 
                    dbus.UInt64(self.timeout_milliseconds(),
496
 
                                variant_level=1),
497
 
                dbus.String("interval"):
498
 
                    dbus.UInt64(self.interval_milliseconds(),
499
 
                                variant_level=1),
500
 
                dbus.String("checker"):
501
 
                    dbus.String(self.checker_command,
502
 
                                variant_level=1),
503
 
                dbus.String("checker_running"):
504
 
                    dbus.Boolean(self.checker is not None,
505
 
                                 variant_level=1),
506
 
                }, signature="sv")
507
 
    
508
 
    # IsStillValid - method
509
 
    IsStillValid = (dbus.service.method(_interface, out_signature="b")
510
 
                    (still_valid))
511
 
    IsStillValid.__name__ = "IsStillValid"
512
 
    
513
 
    # PropertyChanged - signal
514
 
    @dbus.service.signal(_interface, signature="sv")
515
 
    def PropertyChanged(self, property, value):
516
 
        "D-Bus signal"
517
 
        pass
518
 
    
519
 
    # SetChecker - method
520
 
    @dbus.service.method(_interface, in_signature="s")
521
 
    def SetChecker(self, checker):
522
 
        "D-Bus setter method"
523
 
        self.checker_command = checker
524
 
        # Emit D-Bus signal
525
 
        self.PropertyChanged(dbus.String(u"checker"),
526
 
                             dbus.String(self.checker_command,
527
 
                                         variant_level=1))
528
 
    
529
 
    # SetHost - method
530
 
    @dbus.service.method(_interface, in_signature="s")
531
 
    def SetHost(self, host):
532
 
        "D-Bus setter method"
533
 
        self.host = host
534
 
        # Emit D-Bus signal
535
 
        self.PropertyChanged(dbus.String(u"host"),
536
 
                             dbus.String(self.host, variant_level=1))
537
 
    
538
 
    # SetInterval - method
539
 
    @dbus.service.method(_interface, in_signature="t")
540
 
    def SetInterval(self, milliseconds):
541
 
        self.interval = datetime.timedelta(0, 0, 0, milliseconds)
542
 
        # Emit D-Bus signal
543
 
        self.PropertyChanged(dbus.String(u"interval"),
544
 
                             (dbus.UInt64(self.interval_milliseconds(),
545
 
                                          variant_level=1)))
546
 
    
547
 
    # SetSecret - method
548
 
    @dbus.service.method(_interface, in_signature="ay",
549
 
                         byte_arrays=True)
550
 
    def SetSecret(self, secret):
551
 
        "D-Bus setter method"
552
 
        self.secret = str(secret)
553
 
    
554
 
    # SetTimeout - method
555
 
    @dbus.service.method(_interface, in_signature="t")
556
 
    def SetTimeout(self, milliseconds):
557
 
        self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
558
 
        # Emit D-Bus signal
559
 
        self.PropertyChanged(dbus.String(u"timeout"),
560
 
                             (dbus.UInt64(self.timeout_milliseconds(),
561
 
                                          variant_level=1)))
562
 
    
563
 
    # Enable - method
564
 
    Enable = dbus.service.method(_interface)(enable)
565
 
    Enable.__name__ = "Enable"
566
 
    
567
 
    # StartChecker - method
568
 
    @dbus.service.method(_interface)
569
 
    def StartChecker(self):
570
 
        "D-Bus method"
571
 
        self.start_checker()
572
 
    
573
 
    # Disable - method
574
 
    @dbus.service.method(_interface)
575
 
    def Disable(self):
576
 
        "D-Bus method"
577
 
        self.disable()
578
 
    
579
 
    # StopChecker - method
580
 
    StopChecker = dbus.service.method(_interface)(stop_checker)
581
 
    StopChecker.__name__ = "StopChecker"
582
 
    
583
 
    del _interface
584
366
 
585
367
 
586
368
def peer_certificate(session):
587
369
    "Return the peer's OpenPGP certificate as a bytestring"
588
370
    # If not an OpenPGP certificate...
589
 
    if (gnutls.library.functions
590
 
        .gnutls_certificate_type_get(session._c_object)
591
 
        != gnutls.library.constants.GNUTLS_CRT_OPENPGP):
 
371
    if gnutls.library.functions.gnutls_certificate_type_get\
 
372
            (session._c_object) \
 
373
           != gnutls.library.constants.GNUTLS_CRT_OPENPGP:
592
374
        # ...do the normal thing
593
375
        return session.peer_certificate
594
376
    list_size = ctypes.c_uint()
595
 
    cert_list = (gnutls.library.functions
596
 
                 .gnutls_certificate_get_peers
597
 
                 (session._c_object, ctypes.byref(list_size)))
 
377
    cert_list = gnutls.library.functions.gnutls_certificate_get_peers\
 
378
        (session._c_object, ctypes.byref(list_size))
598
379
    if list_size.value == 0:
599
380
        return None
600
381
    cert = cert_list[0]
604
385
def fingerprint(openpgp):
605
386
    "Convert an OpenPGP bytestring to a hexdigit fingerprint string"
606
387
    # New GnuTLS "datum" with the OpenPGP public key
607
 
    datum = (gnutls.library.types
608
 
             .gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
609
 
                                         ctypes.POINTER
610
 
                                         (ctypes.c_ubyte)),
611
 
                             ctypes.c_uint(len(openpgp))))
 
388
    datum = gnutls.library.types.gnutls_datum_t\
 
389
        (ctypes.cast(ctypes.c_char_p(openpgp),
 
390
                     ctypes.POINTER(ctypes.c_ubyte)),
 
391
         ctypes.c_uint(len(openpgp)))
612
392
    # New empty GnuTLS certificate
613
393
    crt = gnutls.library.types.gnutls_openpgp_crt_t()
614
 
    (gnutls.library.functions
615
 
     .gnutls_openpgp_crt_init(ctypes.byref(crt)))
 
394
    gnutls.library.functions.gnutls_openpgp_crt_init\
 
395
        (ctypes.byref(crt))
616
396
    # Import the OpenPGP public key into the certificate
617
 
    (gnutls.library.functions
618
 
     .gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
619
 
                                gnutls.library.constants
620
 
                                .GNUTLS_OPENPGP_FMT_RAW))
621
 
    # Verify the self signature in the key
622
 
    crtverify = ctypes.c_uint()
623
 
    (gnutls.library.functions
624
 
     .gnutls_openpgp_crt_verify_self(crt, 0, ctypes.byref(crtverify)))
625
 
    if crtverify.value != 0:
626
 
        gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
627
 
        raise gnutls.errors.CertificateSecurityError("Verify failed")
 
397
    gnutls.library.functions.gnutls_openpgp_crt_import\
 
398
                    (crt, ctypes.byref(datum),
 
399
                     gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
628
400
    # New buffer for the fingerprint
629
 
    buf = ctypes.create_string_buffer(20)
630
 
    buf_len = ctypes.c_size_t()
 
401
    buffer = ctypes.create_string_buffer(20)
 
402
    buffer_length = ctypes.c_size_t()
631
403
    # Get the fingerprint from the certificate into the buffer
632
 
    (gnutls.library.functions
633
 
     .gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
634
 
                                         ctypes.byref(buf_len)))
 
404
    gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint\
 
405
        (crt, ctypes.byref(buffer), ctypes.byref(buffer_length))
635
406
    # Deinit the certificate
636
407
    gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
637
408
    # Convert the buffer to a Python bytestring
638
 
    fpr = ctypes.string_at(buf, buf_len.value)
 
409
    fpr = ctypes.string_at(buffer, buffer_length.value)
639
410
    # Convert the bytestring to hexadecimal notation
640
411
    hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
641
412
    return hex_fpr
642
413
 
643
414
 
644
 
class TCP_handler(SocketServer.BaseRequestHandler, object):
 
415
class tcp_handler(SocketServer.BaseRequestHandler, object):
645
416
    """A TCP request handler class.
646
417
    Instantiated by IPv6_TCPServer for each request to handle it.
647
418
    Note: This will run in its own forked process."""
648
419
    
649
420
    def handle(self):
650
421
        logger.info(u"TCP connection from: %s",
651
 
                    unicode(self.client_address))
652
 
        session = (gnutls.connection
653
 
                   .ClientSession(self.request,
654
 
                                  gnutls.connection
655
 
                                  .X509Credentials()))
 
422
                     unicode(self.client_address))
 
423
        session = gnutls.connection.ClientSession\
 
424
                  (self.request, gnutls.connection.X509Credentials())
656
425
        
657
426
        line = self.request.makefile().readline()
658
427
        logger.debug(u"Protocol version: %r", line)
671
440
        #priority = ':'.join(("NONE", "+VERS-TLS1.1", "+AES-256-CBC",
672
441
        #                "+SHA1", "+COMP-NULL", "+CTYPE-OPENPGP",
673
442
        #                "+DHE-DSS"))
674
 
        # Use a fallback default, since this MUST be set.
675
 
        priority = self.server.settings.get("priority", "NORMAL")
676
 
        (gnutls.library.functions
677
 
         .gnutls_priority_set_direct(session._c_object,
678
 
                                     priority, None))
 
443
        priority = "NORMAL"             # Fallback default, since this
 
444
                                        # MUST be set.
 
445
        if self.server.settings["priority"]:
 
446
            priority = self.server.settings["priority"]
 
447
        gnutls.library.functions.gnutls_priority_set_direct\
 
448
            (session._c_object, priority, None);
679
449
        
680
450
        try:
681
451
            session.handshake()
691
461
            session.bye()
692
462
            return
693
463
        logger.debug(u"Fingerprint: %s", fpr)
 
464
        client = None
694
465
        for c in self.server.clients:
695
466
            if c.fingerprint == fpr:
696
467
                client = c
697
468
                break
698
 
        else:
 
469
        if not client:
699
470
            logger.warning(u"Client not found for fingerprint: %s",
700
471
                           fpr)
701
472
            session.bye()
708
479
                           vars(client))
709
480
            session.bye()
710
481
            return
711
 
        ## This won't work here, since we're in a fork.
712
 
        # client.bump_timeout()
713
482
        sent_size = 0
714
483
        while sent_size < len(client.secret):
715
484
            sent = session.send(client.secret[sent_size:])
720
489
        session.bye()
721
490
 
722
491
 
723
 
class IPv6_TCPServer(SocketServer.ForkingMixIn,
724
 
                     SocketServer.TCPServer, object):
 
492
class IPv6_TCPServer(SocketServer.ForkingTCPServer, object):
725
493
    """IPv6 TCP server.  Accepts 'None' as address and/or port.
726
494
    Attributes:
727
495
        settings:       Server settings
728
496
        clients:        Set() of Client objects
729
 
        enabled:        Boolean; whether this server is activated yet
730
497
    """
731
498
    address_family = socket.AF_INET6
732
499
    def __init__(self, *args, **kwargs):
736
503
        if "clients" in kwargs:
737
504
            self.clients = kwargs["clients"]
738
505
            del kwargs["clients"]
739
 
        self.enabled = False
740
 
        super(IPv6_TCPServer, self).__init__(*args, **kwargs)
 
506
        return super(type(self), self).__init__(*args, **kwargs)
741
507
    def server_bind(self):
742
508
        """This overrides the normal server_bind() function
743
509
        to bind to an interface if one was specified, and also NOT to
762
528
                in6addr_any = "::"
763
529
                self.server_address = (in6addr_any,
764
530
                                       self.server_address[1])
765
 
            elif not self.server_address[1]:
 
531
            elif self.server_address[1] is None:
766
532
                self.server_address = (self.server_address[0],
767
533
                                       0)
768
 
#                 if self.settings["interface"]:
769
 
#                     self.server_address = (self.server_address[0],
770
 
#                                            0, # port
771
 
#                                            0, # flowinfo
772
 
#                                            if_nametoindex
773
 
#                                            (self.settings
774
 
#                                             ["interface"]))
775
 
            return super(IPv6_TCPServer, self).server_bind()
776
 
    def server_activate(self):
777
 
        if self.enabled:
778
 
            return super(IPv6_TCPServer, self).server_activate()
779
 
    def enable(self):
780
 
        self.enabled = True
 
534
            return super(type(self), self).server_bind()
781
535
 
782
536
 
783
537
def string_to_delta(interval):
793
547
    datetime.timedelta(1)
794
548
    >>> string_to_delta(u'1w')
795
549
    datetime.timedelta(7)
796
 
    >>> string_to_delta('5m 30s')
797
 
    datetime.timedelta(0, 330)
798
550
    """
799
 
    timevalue = datetime.timedelta(0)
800
 
    for s in interval.split():
801
 
        try:
802
 
            suffix = unicode(s[-1])
803
 
            value = int(s[:-1])
804
 
            if suffix == u"d":
805
 
                delta = datetime.timedelta(value)
806
 
            elif suffix == u"s":
807
 
                delta = datetime.timedelta(0, value)
808
 
            elif suffix == u"m":
809
 
                delta = datetime.timedelta(0, 0, 0, 0, value)
810
 
            elif suffix == u"h":
811
 
                delta = datetime.timedelta(0, 0, 0, 0, 0, value)
812
 
            elif suffix == u"w":
813
 
                delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
814
 
            else:
815
 
                raise ValueError
816
 
        except (ValueError, IndexError):
 
551
    try:
 
552
        suffix=unicode(interval[-1])
 
553
        value=int(interval[:-1])
 
554
        if suffix == u"d":
 
555
            delta = datetime.timedelta(value)
 
556
        elif suffix == u"s":
 
557
            delta = datetime.timedelta(0, value)
 
558
        elif suffix == u"m":
 
559
            delta = datetime.timedelta(0, 0, 0, 0, value)
 
560
        elif suffix == u"h":
 
561
            delta = datetime.timedelta(0, 0, 0, 0, 0, value)
 
562
        elif suffix == u"w":
 
563
            delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
 
564
        else:
817
565
            raise ValueError
818
 
        timevalue += delta
819
 
    return timevalue
 
566
    except (ValueError, IndexError):
 
567
        raise ValueError
 
568
    return delta
820
569
 
821
570
 
822
571
def server_state_changed(state):
823
572
    """Derived from the Avahi example code"""
824
573
    if state == avahi.SERVER_COLLISION:
825
 
        logger.error(u"Zeroconf server name collision")
 
574
        logger.error(u"Server name collision")
826
575
        service.remove()
827
576
    elif state == avahi.SERVER_RUNNING:
828
577
        service.add()
830
579
 
831
580
def entry_group_state_changed(state, error):
832
581
    """Derived from the Avahi example code"""
833
 
    logger.debug(u"Avahi state change: %i", state)
 
582
    logger.debug(u"state change: %i", state)
834
583
    
835
584
    if state == avahi.ENTRY_GROUP_ESTABLISHED:
836
 
        logger.debug(u"Zeroconf service established.")
 
585
        logger.debug(u"Service established.")
837
586
    elif state == avahi.ENTRY_GROUP_COLLISION:
838
 
        logger.warning(u"Zeroconf service name collision.")
 
587
        logger.warning(u"Service name collision.")
839
588
        service.rename()
840
589
    elif state == avahi.ENTRY_GROUP_FAILURE:
841
 
        logger.critical(u"Avahi: Error in group state changed %s",
 
590
        logger.critical(u"Error in group state changed %s",
842
591
                        unicode(error))
843
 
        raise AvahiGroupError(u"State changed: %s" % unicode(error))
 
592
        raise AvahiGroupError("State changed: %s", str(error))
844
593
 
845
594
def if_nametoindex(interface):
846
595
    """Call the C function if_nametoindex(), or equivalent"""
847
596
    global if_nametoindex
848
597
    try:
849
 
        if_nametoindex = (ctypes.cdll.LoadLibrary
850
 
                          (ctypes.util.find_library("c"))
851
 
                          .if_nametoindex)
 
598
        if "ctypes.util" not in sys.modules:
 
599
            import ctypes.util
 
600
        if_nametoindex = ctypes.cdll.LoadLibrary\
 
601
            (ctypes.util.find_library("c")).if_nametoindex
852
602
    except (OSError, AttributeError):
853
603
        if "struct" not in sys.modules:
854
604
            import struct
857
607
        def if_nametoindex(interface):
858
608
            "Get an interface index the hard way, i.e. using fcntl()"
859
609
            SIOCGIFINDEX = 0x8933  # From /usr/include/linux/sockios.h
860
 
            with closing(socket.socket()) as s:
861
 
                ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
862
 
                                    struct.pack("16s16x", interface))
 
610
            s = socket.socket()
 
611
            ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
 
612
                                struct.pack("16s16x", interface))
 
613
            s.close()
863
614
            interface_index = struct.unpack("I", ifreq[16:20])[0]
864
615
            return interface_index
865
616
    return if_nametoindex(interface)
889
640
 
890
641
 
891
642
def main():
892
 
    parser = OptionParser(version = "%%prog %s" % version)
 
643
    global main_loop_started
 
644
    main_loop_started = False
 
645
    
 
646
    parser = OptionParser()
893
647
    parser.add_option("-i", "--interface", type="string",
894
648
                      metavar="IF", help="Bind to interface IF")
895
649
    parser.add_option("-a", "--address", type="string",
896
650
                      help="Address to listen for requests on")
897
651
    parser.add_option("-p", "--port", type="int",
898
652
                      help="Port number to receive requests on")
899
 
    parser.add_option("--check", action="store_true",
 
653
    parser.add_option("--check", action="store_true", default=False,
900
654
                      help="Run self-test")
901
 
    parser.add_option("--debug", action="store_true",
 
655
    parser.add_option("--debug", action="store_true", default=False,
902
656
                      help="Debug mode; run in foreground and log to"
903
657
                      " terminal")
904
658
    parser.add_option("--priority", type="string", help="GnuTLS"
909
663
                      default="/etc/mandos", metavar="DIR",
910
664
                      help="Directory to search for configuration"
911
665
                      " files")
912
 
    parser.add_option("--no-dbus", action="store_false",
913
 
                      dest="use_dbus",
914
 
                      help="Do not provide D-Bus system bus"
915
 
                      " interface")
916
 
    options = parser.parse_args()[0]
 
666
    (options, args) = parser.parse_args()
917
667
    
918
668
    if options.check:
919
669
        import doctest
928
678
                        "priority":
929
679
                        "SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
930
680
                        "servicename": "Mandos",
931
 
                        "use_dbus": "True",
932
681
                        }
933
682
    
934
683
    # Parse config file for server-global settings
935
684
    server_config = ConfigParser.SafeConfigParser(server_defaults)
936
685
    del server_defaults
937
686
    server_config.read(os.path.join(options.configdir, "mandos.conf"))
 
687
    server_section = "server"
938
688
    # Convert the SafeConfigParser object to a dict
939
 
    server_settings = server_config.defaults()
940
 
    # Use getboolean on the boolean config options
941
 
    server_settings["debug"] = (server_config.getboolean
942
 
                                ("DEFAULT", "debug"))
943
 
    server_settings["use_dbus"] = (server_config.getboolean
944
 
                                   ("DEFAULT", "use_dbus"))
 
689
    server_settings = dict(server_config.items(server_section))
 
690
    # Use getboolean on the boolean config option
 
691
    server_settings["debug"] = server_config.getboolean\
 
692
                               (server_section, "debug")
945
693
    del server_config
946
694
    
947
695
    # Override the settings from the config file with command line
948
696
    # options, if set.
949
697
    for option in ("interface", "address", "port", "debug",
950
 
                   "priority", "servicename", "configdir",
951
 
                   "use_dbus"):
 
698
                   "priority", "servicename", "configdir"):
952
699
        value = getattr(options, option)
953
700
        if value is not None:
954
701
            server_settings[option] = value
955
702
    del options
956
703
    # Now we have our good server settings in "server_settings"
957
704
    
958
 
    # For convenience
959
 
    debug = server_settings["debug"]
960
 
    use_dbus = server_settings["use_dbus"]
961
 
    
962
 
    if not debug:
963
 
        syslogger.setLevel(logging.WARNING)
964
 
        console.setLevel(logging.WARNING)
965
 
    
966
 
    if server_settings["servicename"] != "Mandos":
967
 
        syslogger.setFormatter(logging.Formatter
968
 
                               ('Mandos (%s): %%(levelname)s:'
969
 
                                ' %%(message)s'
970
 
                                % server_settings["servicename"]))
971
 
    
972
705
    # Parse config file with clients
973
706
    client_defaults = { "timeout": "1h",
974
707
                        "interval": "5m",
975
 
                        "checker": "fping -q -- %%(host)s",
976
 
                        "host": "",
 
708
                        "checker": "fping -q -- %%(fqdn)s",
977
709
                        }
978
710
    client_config = ConfigParser.SafeConfigParser(client_defaults)
979
711
    client_config.read(os.path.join(server_settings["configdir"],
980
712
                                    "clients.conf"))
981
713
    
982
 
    clients = Set()
983
 
    tcp_server = IPv6_TCPServer((server_settings["address"],
984
 
                                 server_settings["port"]),
985
 
                                TCP_handler,
986
 
                                settings=server_settings,
987
 
                                clients=clients)
988
 
    pidfilename = "/var/run/mandos.pid"
989
 
    try:
990
 
        pidfile = open(pidfilename, "w")
991
 
    except IOError, error:
992
 
        logger.error("Could not open file %r", pidfilename)
993
 
    
994
 
    try:
995
 
        uid = pwd.getpwnam("_mandos").pw_uid
996
 
        gid = pwd.getpwnam("_mandos").pw_gid
997
 
    except KeyError:
998
 
        try:
999
 
            uid = pwd.getpwnam("mandos").pw_uid
1000
 
            gid = pwd.getpwnam("mandos").pw_gid
1001
 
        except KeyError:
1002
 
            try:
1003
 
                uid = pwd.getpwnam("nobody").pw_uid
1004
 
                gid = pwd.getpwnam("nogroup").pw_gid
1005
 
            except KeyError:
1006
 
                uid = 65534
1007
 
                gid = 65534
1008
 
    try:
1009
 
        os.setuid(uid)
1010
 
        os.setgid(gid)
1011
 
    except OSError, error:
1012
 
        if error[0] != errno.EPERM:
1013
 
            raise error
1014
 
    
1015
714
    global service
1016
715
    service = AvahiService(name = server_settings["servicename"],
1017
 
                           servicetype = "_mandos._tcp", )
 
716
                           type = "_mandos._tcp", );
1018
717
    if server_settings["interface"]:
1019
 
        service.interface = (if_nametoindex
1020
 
                             (server_settings["interface"]))
 
718
        service.interface = if_nametoindex(server_settings["interface"])
1021
719
    
1022
720
    global main_loop
1023
721
    global bus
1026
724
    DBusGMainLoop(set_as_default=True )
1027
725
    main_loop = gobject.MainLoop()
1028
726
    bus = dbus.SystemBus()
1029
 
    server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
1030
 
                                           avahi.DBUS_PATH_SERVER),
1031
 
                            avahi.DBUS_INTERFACE_SERVER)
 
727
    server = dbus.Interface(
 
728
            bus.get_object( avahi.DBUS_NAME, avahi.DBUS_PATH_SERVER ),
 
729
            avahi.DBUS_INTERFACE_SERVER )
1032
730
    # End of Avahi example code
1033
 
    if use_dbus:
1034
 
        bus_name = dbus.service.BusName(u"org.mandos-system.Mandos",
1035
 
                                        bus)
 
731
    
 
732
    debug = server_settings["debug"]
 
733
    
 
734
    if debug:
 
735
        console = logging.StreamHandler()
 
736
        # console.setLevel(logging.DEBUG)
 
737
        console.setFormatter(logging.Formatter\
 
738
                             ('%(levelname)s: %(message)s'))
 
739
        logger.addHandler(console)
 
740
        del console
 
741
    
 
742
    clients = Set()
 
743
    def remove_from_clients(client):
 
744
        clients.remove(client)
 
745
        if not clients:
 
746
            logger.critical(u"No clients left, exiting")
 
747
            sys.exit()
1036
748
    
1037
749
    clients.update(Set(Client(name = section,
 
750
                              stop_hook = remove_from_clients,
1038
751
                              config
1039
 
                              = dict(client_config.items(section)),
1040
 
                              use_dbus = use_dbus)
 
752
                              = dict(client_config.items(section)))
1041
753
                       for section in client_config.sections()))
1042
 
    if not clients:
1043
 
        logger.warning(u"No clients defined")
1044
754
    
1045
 
    if debug:
1046
 
        # Redirect stdin so all checkers get /dev/null
1047
 
        null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1048
 
        os.dup2(null, sys.stdin.fileno())
1049
 
        if null > 2:
1050
 
            os.close(null)
1051
 
    else:
1052
 
        # No console logging
1053
 
        logger.removeHandler(console)
1054
 
        # Close all input and output, do double fork, etc.
 
755
    if not debug:
1055
756
        daemon()
1056
757
    
1057
 
    try:
1058
 
        pid = os.getpid()
1059
 
        pidfile.write(str(pid) + "\n")
1060
 
        pidfile.close()
1061
 
        del pidfile
1062
 
    except IOError:
1063
 
        logger.error(u"Could not write to file %r with PID %d",
1064
 
                     pidfilename, pid)
1065
 
    except NameError:
1066
 
        # "pidfile" was never created
1067
 
        pass
1068
 
    del pidfilename
1069
 
    
1070
758
    def cleanup():
1071
759
        "Cleanup function; run on exit"
1072
760
        global group
1078
766
        
1079
767
        while clients:
1080
768
            client = clients.pop()
1081
 
            client.disable_hook = None
1082
 
            client.disable()
 
769
            client.stop_hook = None
 
770
            client.stop()
1083
771
    
1084
772
    atexit.register(cleanup)
1085
773
    
1088
776
    signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1089
777
    signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1090
778
    
1091
 
    if use_dbus:
1092
 
        class MandosServer(dbus.service.Object):
1093
 
            """A D-Bus proxy object"""
1094
 
            def __init__(self):
1095
 
                dbus.service.Object.__init__(self, bus,
1096
 
                                             "/Mandos")
1097
 
            _interface = u"org.mandos_system.Mandos"
1098
 
 
1099
 
            @dbus.service.signal(_interface, signature="oa{sv}")
1100
 
            def ClientAdded(self, objpath, properties):
1101
 
                "D-Bus signal"
1102
 
                pass
1103
 
 
1104
 
            @dbus.service.signal(_interface, signature="o")
1105
 
            def ClientRemoved(self, objpath):
1106
 
                "D-Bus signal"
1107
 
                pass
1108
 
 
1109
 
            @dbus.service.method(_interface, out_signature="ao")
1110
 
            def GetAllClients(self):
1111
 
                return dbus.Array(c.dbus_object_path for c in clients)
1112
 
 
1113
 
            @dbus.service.method(_interface, out_signature="a{oa{sv}}")
1114
 
            def GetAllClientsWithProperties(self):
1115
 
                return dbus.Dictionary(
1116
 
                    ((c.dbus_object_path, c.GetAllProperties())
1117
 
                     for c in clients),
1118
 
                    signature="oa{sv}")
1119
 
 
1120
 
            @dbus.service.method(_interface, in_signature="o")
1121
 
            def RemoveClient(self, object_path):
1122
 
                for c in clients:
1123
 
                    if c.dbus_object_path == object_path:
1124
 
                        clients.remove(c)
1125
 
                        # Don't signal anything except ClientRemoved
1126
 
                        c.use_dbus = False
1127
 
                        c.disable()
1128
 
                        # Emit D-Bus signal
1129
 
                        self.ClientRemoved(object_path)
1130
 
                        return
1131
 
                raise KeyError
1132
 
            @dbus.service.method(_interface)
1133
 
            def Quit(self):
1134
 
                main_loop.quit()
1135
 
 
1136
 
            del _interface
1137
 
    
1138
 
        mandos_server = MandosServer()
1139
 
    
1140
779
    for client in clients:
1141
 
        if use_dbus:
1142
 
            # Emit D-Bus signal
1143
 
            mandos_server.ClientAdded(client.dbus_object_path,
1144
 
                                      client.GetAllProperties())
1145
 
        client.enable()
1146
 
    
1147
 
    tcp_server.enable()
1148
 
    tcp_server.server_activate()
1149
 
    
 
780
        client.start()
 
781
    
 
782
    tcp_server = IPv6_TCPServer((server_settings["address"],
 
783
                                 server_settings["port"]),
 
784
                                tcp_handler,
 
785
                                settings=server_settings,
 
786
                                clients=clients)
1150
787
    # Find out what port we got
1151
788
    service.port = tcp_server.socket.getsockname()[1]
1152
789
    logger.info(u"Now listening on address %r, port %d, flowinfo %d,"
1166
803
        
1167
804
        gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1168
805
                             lambda *args, **kwargs:
1169
 
                             (tcp_server.handle_request
1170
 
                              (*args[2:], **kwargs) or True))
 
806
                             tcp_server.handle_request\
 
807
                             (*args[2:], **kwargs) or True)
1171
808
        
1172
 
        logger.debug(u"Starting main loop")
 
809
        logger.debug("Starting main loop")
 
810
        main_loop_started = True
1173
811
        main_loop.run()
1174
812
    except AvahiError, error:
1175
 
        logger.critical(u"AvahiError: %s", error)
 
813
        logger.critical(u"AvahiError: %s" + unicode(error))
1176
814
        sys.exit(1)
1177
815
    except KeyboardInterrupt:
1178
816
        if debug: