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  • Committer: Teddy Hogeborn
  • Date: 2008-08-18 05:24:20 UTC
  • Revision ID: teddy@fukt.bsnet.se-20080818052420-ab5eurrioz8n2qy6
* Makefile: Bug fix: fixed creation of man pages in "plugins.d".

* mandos-keygen Bug fix: make the --expire option modify
                KEYEXPIRE, not KEYCOMMENT.  Use the "--no-options"
                option to gpg when exporting keys from the temporary
                key ring files.

* mandos-keygen.xml (EXIT STATUS): Filled in.
  (ENVIRONMENT): New section, documenting use of TMPDIR.
  (FILES): Document use of key files and /tmp.
  (BUGS): Filled in.
  (EXAMPLE): Added two examples.
  (SECURITY): Added some text.

* plugins.d/password-prompt.xml (NOTES): Removed, since this is
                                         created automatically for
                                         footnotes.
  (ENVIRONMENT, FILES): Added empty sections.
  (EXAMPLES): Renamed to "EXAMPLE", as per man-pages(7).

* plugins.d/password-request.xml: Reordered sections.
  (ENVIRONMENT): New empty section.
  (EXAMPLES): Renamed to "EXAMPLE", as per man-pages(7).

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Lines of Context:
mandos
11
11
# and some lines in "main".
12
12
# 
13
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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
16
15
# 
17
16
# This program is free software: you can redistribute it and/or modify
18
17
# it under the terms of the GNU General Public License as published by
25
24
#     GNU General Public License for more details.
26
25
# 
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
38
 
import optparse
 
36
import select
 
37
from optparse import OptionParser
39
38
import datetime
40
39
import errno
41
40
import gnutls.crypto
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 = "1.0.5"
 
64
version = "1.0"
70
65
 
71
66
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'))
 
67
syslogger = logging.handlers.SysLogHandler\
 
68
            (facility = logging.handlers.SysLogHandler.LOG_DAEMON,
 
69
             address = "/dev/log")
 
70
syslogger.setFormatter(logging.Formatter\
 
71
                        ('Mandos: %(levelname)s: %(message)s'))
77
72
logger.addHandler(syslogger)
78
73
 
79
74
console = logging.StreamHandler()
82
77
logger.addHandler(console)
83
78
 
84
79
class AvahiError(Exception):
85
 
    def __init__(self, value, *args, **kwargs):
 
80
    def __init__(self, value):
86
81
        self.value = value
87
 
        super(AvahiError, self).__init__(value, *args, **kwargs)
88
 
    def __unicode__(self):
89
 
        return unicode(repr(self.value))
 
82
    def __str__(self):
 
83
        return repr(self.value)
90
84
 
91
85
class AvahiServiceError(AvahiError):
92
86
    pass
112
106
                  a sensible number of times
113
107
    """
114
108
    def __init__(self, interface = avahi.IF_UNSPEC, name = None,
115
 
                 servicetype = None, port = None, TXT = None,
116
 
                 domain = "", host = "", max_renames = 32768):
 
109
                 type = None, port = None, TXT = None, domain = "",
 
110
                 host = "", max_renames = 32768):
117
111
        self.interface = interface
118
112
        self.name = name
119
 
        self.type = servicetype
 
113
        self.type = type
120
114
        self.port = port
121
 
        self.TXT = TXT if TXT is not None else []
 
115
        if TXT is None:
 
116
            self.TXT = []
 
117
        else:
 
118
            self.TXT = TXT
122
119
        self.domain = domain
123
120
        self.host = host
124
121
        self.rename_count = 0
126
123
    def rename(self):
127
124
        """Derived from the Avahi example code"""
128
125
        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")
 
126
            logger.critical(u"No suitable service name found after %i"
 
127
                            u" retries, exiting.", rename_count)
 
128
            raise AvahiServiceError("Too many renames")
133
129
        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
 
130
        logger.info(u"Changing name to %r ...", str(self.name))
 
131
        syslogger.setFormatter(logging.Formatter\
137
132
                               ('Mandos (%s): %%(levelname)s:'
138
 
                                ' %%(message)s' % self.name))
 
133
                               ' %%(message)s' % self.name))
139
134
        self.remove()
140
135
        self.add()
141
136
        self.rename_count += 1
147
142
        """Derived from the Avahi example code"""
148
143
        global group
149
144
        if group is None:
150
 
            group = dbus.Interface(bus.get_object
151
 
                                   (avahi.DBUS_NAME,
 
145
            group = dbus.Interface\
 
146
                    (bus.get_object(avahi.DBUS_NAME,
152
147
                                    server.EntryGroupNew()),
153
 
                                   avahi.DBUS_INTERFACE_ENTRY_GROUP)
 
148
                     avahi.DBUS_INTERFACE_ENTRY_GROUP)
154
149
            group.connect_to_signal('StateChanged',
155
150
                                    entry_group_state_changed)
156
 
        logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
 
151
        logger.debug(u"Adding service '%s' of type '%s' ...",
157
152
                     service.name, service.type)
158
153
        group.AddService(
159
154
                self.interface,         # interface
170
165
# End of Avahi example code
171
166
 
172
167
 
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):
 
168
class Client(object):
179
169
    """A representation of a client host served by this server.
180
170
    Attributes:
181
 
    name:       string; from the config file, used in log messages and
182
 
                        D-Bus identifiers
 
171
    name:      string; from the config file, used in log messages
183
172
    fingerprint: string (40 or 32 hexadecimal digits); used to
184
173
                 uniquely identify the client
185
 
    secret:     bytestring; sent verbatim (over TLS) to client
186
 
    host:       string; available for use by the checker command
187
 
    created:    datetime.datetime(); (UTC) object creation
188
 
    last_enabled: datetime.datetime(); (UTC)
189
 
    enabled:    bool()
190
 
    last_checked_ok: datetime.datetime(); (UTC) or None
191
 
    timeout:    datetime.timedelta(); How long from last_checked_ok
192
 
                                      until this client is invalid
193
 
    interval:   datetime.timedelta(); How often to start a new checker
194
 
    disable_hook:  If set, called by disable() as disable_hook(self)
195
 
    checker:    subprocess.Popen(); a running checker process used
196
 
                                    to see if the client lives.
197
 
                                    'None' if no process is running.
 
174
    secret:    bytestring; sent verbatim (over TLS) to client
 
175
    host:      string; available for use by the checker command
 
176
    created:   datetime.datetime(); object creation, not client host
 
177
    last_checked_ok: datetime.datetime() or None if not yet checked OK
 
178
    timeout:   datetime.timedelta(); How long from last_checked_ok
 
179
                                     until this client is invalid
 
180
    interval:  datetime.timedelta(); How often to start a new checker
 
181
    stop_hook: If set, called by stop() as stop_hook(self)
 
182
    checker:   subprocess.Popen(); a running checker process used
 
183
                                   to see if the client lives.
 
184
                                   'None' if no process is running.
198
185
    checker_initiator_tag: a gobject event source tag, or None
199
 
    disable_initiator_tag:    - '' -
 
186
    stop_initiator_tag:    - '' -
200
187
    checker_callback_tag:  - '' -
201
188
    checker_command: string; External command which is run to check if
202
189
                     client lives.  %() expansions are done at
203
190
                     runtime with vars(self) as dict, so that for
204
191
                     instance %(name)s can be used in the command.
205
 
    use_dbus: bool(); Whether to provide D-Bus interface and signals
206
 
    dbus_object_path: dbus.ObjectPath ; only set if self.use_dbus
 
192
    Private attibutes:
 
193
    _timeout: Real variable for 'timeout'
 
194
    _interval: Real variable for 'interval'
 
195
    _timeout_milliseconds: Used when calling gobject.timeout_add()
 
196
    _interval_milliseconds: - '' -
207
197
    """
208
 
    def timeout_milliseconds(self):
209
 
        "Return the 'timeout' attribute in milliseconds"
210
 
        return ((self.timeout.days * 24 * 60 * 60 * 1000)
211
 
                + (self.timeout.seconds * 1000)
212
 
                + (self.timeout.microseconds // 1000))
213
 
    
214
 
    def interval_milliseconds(self):
215
 
        "Return the 'interval' attribute in milliseconds"
216
 
        return ((self.interval.days * 24 * 60 * 60 * 1000)
217
 
                + (self.interval.seconds * 1000)
218
 
                + (self.interval.microseconds // 1000))
219
 
    
220
 
    def __init__(self, name = None, disable_hook=None, config=None,
221
 
                 use_dbus=True):
 
198
    def _set_timeout(self, timeout):
 
199
        "Setter function for 'timeout' attribute"
 
200
        self._timeout = timeout
 
201
        self._timeout_milliseconds = ((self.timeout.days
 
202
                                       * 24 * 60 * 60 * 1000)
 
203
                                      + (self.timeout.seconds * 1000)
 
204
                                      + (self.timeout.microseconds
 
205
                                         // 1000))
 
206
    timeout = property(lambda self: self._timeout,
 
207
                       _set_timeout)
 
208
    del _set_timeout
 
209
    def _set_interval(self, interval):
 
210
        "Setter function for 'interval' attribute"
 
211
        self._interval = interval
 
212
        self._interval_milliseconds = ((self.interval.days
 
213
                                        * 24 * 60 * 60 * 1000)
 
214
                                       + (self.interval.seconds
 
215
                                          * 1000)
 
216
                                       + (self.interval.microseconds
 
217
                                          // 1000))
 
218
    interval = property(lambda self: self._interval,
 
219
                        _set_interval)
 
220
    del _set_interval
 
221
    def __init__(self, name = None, stop_hook=None, config={}):
222
222
        """Note: the 'checker' key in 'config' sets the
223
223
        'checker_command' attribute and *not* the 'checker'
224
224
        attribute."""
225
225
        self.name = name
226
 
        if config is None:
227
 
            config = {}
228
226
        logger.debug(u"Creating client %r", self.name)
229
 
        self.use_dbus = False   # During __init__
230
227
        # Uppercase and remove spaces from fingerprint for later
231
228
        # comparison purposes with return value from the fingerprint()
232
229
        # function
233
 
        self.fingerprint = (config["fingerprint"].upper()
234
 
                            .replace(u" ", u""))
 
230
        self.fingerprint = config["fingerprint"].upper()\
 
231
                           .replace(u" ", u"")
235
232
        logger.debug(u"  Fingerprint: %s", self.fingerprint)
236
233
        if "secret" in config:
237
234
            self.secret = config["secret"].decode(u"base64")
238
235
        elif "secfile" in config:
239
 
            with closing(open(os.path.expanduser
240
 
                              (os.path.expandvars
241
 
                               (config["secfile"])))) as secfile:
242
 
                self.secret = secfile.read()
 
236
            sf = open(config["secfile"])
 
237
            self.secret = sf.read()
 
238
            sf.close()
243
239
        else:
244
240
            raise TypeError(u"No secret or secfile for client %s"
245
241
                            % self.name)
246
242
        self.host = config.get("host", "")
247
 
        self.created = datetime.datetime.utcnow()
248
 
        self.enabled = False
249
 
        self.last_enabled = None
 
243
        self.created = datetime.datetime.now()
250
244
        self.last_checked_ok = None
251
245
        self.timeout = string_to_delta(config["timeout"])
252
246
        self.interval = string_to_delta(config["interval"])
253
 
        self.disable_hook = disable_hook
 
247
        self.stop_hook = stop_hook
254
248
        self.checker = None
255
249
        self.checker_initiator_tag = None
256
 
        self.disable_initiator_tag = None
 
250
        self.stop_initiator_tag = None
257
251
        self.checker_callback_tag = None
258
 
        self.checker_command = config["checker"]
259
 
        self.last_connect = None
260
 
        # Only now, when this client is initialized, can it show up on
261
 
        # the D-Bus
262
 
        self.use_dbus = use_dbus
263
 
        if self.use_dbus:
264
 
            self.dbus_object_path = (dbus.ObjectPath
265
 
                                     ("/clients/"
266
 
                                      + self.name.replace(".", "_")))
267
 
            dbus.service.Object.__init__(self, bus,
268
 
                                         self.dbus_object_path)
269
 
    
270
 
    def enable(self):
 
252
        self.check_command = config["checker"]
 
253
    def start(self):
271
254
        """Start this client's checker and timeout hooks"""
272
 
        self.last_enabled = datetime.datetime.utcnow()
273
255
        # Schedule a new checker to be started an 'interval' from now,
274
256
        # and every interval from then on.
275
 
        self.checker_initiator_tag = (gobject.timeout_add
276
 
                                      (self.interval_milliseconds(),
277
 
                                       self.start_checker))
 
257
        self.checker_initiator_tag = gobject.timeout_add\
 
258
                                     (self._interval_milliseconds,
 
259
                                      self.start_checker)
278
260
        # Also start a new checker *right now*.
279
261
        self.start_checker()
280
 
        # Schedule a disable() when 'timeout' has passed
281
 
        self.disable_initiator_tag = (gobject.timeout_add
282
 
                                   (self.timeout_milliseconds(),
283
 
                                    self.disable))
284
 
        self.enabled = True
285
 
        if self.use_dbus:
286
 
            # Emit D-Bus signals
287
 
            self.PropertyChanged(dbus.String(u"enabled"),
288
 
                                 dbus.Boolean(True, variant_level=1))
289
 
            self.PropertyChanged(dbus.String(u"last_enabled"),
290
 
                                 (_datetime_to_dbus(self.last_enabled,
291
 
                                                    variant_level=1)))
292
 
    
293
 
    def disable(self):
294
 
        """Disable this client."""
295
 
        if not getattr(self, "enabled", False):
 
262
        # Schedule a stop() when 'timeout' has passed
 
263
        self.stop_initiator_tag = gobject.timeout_add\
 
264
                                  (self._timeout_milliseconds,
 
265
                                   self.stop)
 
266
    def stop(self):
 
267
        """Stop this client.
 
268
        The possibility that a client might be restarted is left open,
 
269
        but not currently used."""
 
270
        # If this client doesn't have a secret, it is already stopped.
 
271
        if hasattr(self, "secret") and self.secret:
 
272
            logger.info(u"Stopping client %s", self.name)
 
273
            self.secret = None
 
274
        else:
296
275
            return False
297
 
        logger.info(u"Disabling client %s", self.name)
298
 
        if getattr(self, "disable_initiator_tag", False):
299
 
            gobject.source_remove(self.disable_initiator_tag)
300
 
            self.disable_initiator_tag = None
 
276
        if getattr(self, "stop_initiator_tag", False):
 
277
            gobject.source_remove(self.stop_initiator_tag)
 
278
            self.stop_initiator_tag = None
301
279
        if getattr(self, "checker_initiator_tag", False):
302
280
            gobject.source_remove(self.checker_initiator_tag)
303
281
            self.checker_initiator_tag = None
304
282
        self.stop_checker()
305
 
        if self.disable_hook:
306
 
            self.disable_hook(self)
307
 
        self.enabled = False
308
 
        if self.use_dbus:
309
 
            # Emit D-Bus signal
310
 
            self.PropertyChanged(dbus.String(u"enabled"),
311
 
                                 dbus.Boolean(False, variant_level=1))
 
283
        if self.stop_hook:
 
284
            self.stop_hook(self)
312
285
        # Do not run this again if called by a gobject.timeout_add
313
286
        return False
314
 
    
315
287
    def __del__(self):
316
 
        self.disable_hook = None
317
 
        self.disable()
318
 
    
319
 
    def checker_callback(self, pid, condition, command):
 
288
        self.stop_hook = None
 
289
        self.stop()
 
290
    def checker_callback(self, pid, condition):
320
291
        """The checker has completed, so take appropriate actions."""
 
292
        now = datetime.datetime.now()
321
293
        self.checker_callback_tag = None
322
294
        self.checker = None
323
 
        if self.use_dbus:
324
 
            # Emit D-Bus signal
325
 
            self.PropertyChanged(dbus.String(u"checker_running"),
326
 
                                 dbus.Boolean(False, variant_level=1))
327
 
        if os.WIFEXITED(condition):
328
 
            exitstatus = os.WEXITSTATUS(condition)
329
 
            if exitstatus == 0:
330
 
                logger.info(u"Checker for %(name)s succeeded",
331
 
                            vars(self))
332
 
                self.checked_ok()
333
 
            else:
334
 
                logger.info(u"Checker for %(name)s failed",
335
 
                            vars(self))
336
 
            if self.use_dbus:
337
 
                # Emit D-Bus signal
338
 
                self.CheckerCompleted(dbus.Int16(exitstatus),
339
 
                                      dbus.Int64(condition),
340
 
                                      dbus.String(command))
341
 
        else:
 
295
        if os.WIFEXITED(condition) \
 
296
               and (os.WEXITSTATUS(condition) == 0):
 
297
            logger.info(u"Checker for %(name)s succeeded",
 
298
                        vars(self))
 
299
            self.last_checked_ok = now
 
300
            gobject.source_remove(self.stop_initiator_tag)
 
301
            self.stop_initiator_tag = gobject.timeout_add\
 
302
                                      (self._timeout_milliseconds,
 
303
                                       self.stop)
 
304
        elif not os.WIFEXITED(condition):
342
305
            logger.warning(u"Checker for %(name)s crashed?",
343
306
                           vars(self))
344
 
            if self.use_dbus:
345
 
                # Emit D-Bus signal
346
 
                self.CheckerCompleted(dbus.Int16(-1),
347
 
                                      dbus.Int64(condition),
348
 
                                      dbus.String(command))
349
 
    
350
 
    def checked_ok(self):
351
 
        """Bump up the timeout for this client.
352
 
        This should only be called when the client has been seen,
353
 
        alive and well.
354
 
        """
355
 
        self.last_checked_ok = datetime.datetime.utcnow()
356
 
        gobject.source_remove(self.disable_initiator_tag)
357
 
        self.disable_initiator_tag = (gobject.timeout_add
358
 
                                      (self.timeout_milliseconds(),
359
 
                                       self.disable))
360
 
        if self.use_dbus:
361
 
            # Emit D-Bus signal
362
 
            self.PropertyChanged(
363
 
                dbus.String(u"last_checked_ok"),
364
 
                (_datetime_to_dbus(self.last_checked_ok,
365
 
                                   variant_level=1)))
366
 
    
 
307
        else:
 
308
            logger.info(u"Checker for %(name)s failed",
 
309
                        vars(self))
367
310
    def start_checker(self):
368
311
        """Start a new checker subprocess if one is not running.
369
312
        If a checker already exists, leave it running and do
378
321
        # is as it should be.
379
322
        if self.checker is None:
380
323
            try:
381
 
                # In case checker_command has exactly one % operator
382
 
                command = self.checker_command % self.host
 
324
                # In case check_command has exactly one % operator
 
325
                command = self.check_command % self.host
383
326
            except TypeError:
384
327
                # Escape attributes for the shell
385
328
                escaped_attrs = dict((key, re.escape(str(val)))
386
329
                                     for key, val in
387
330
                                     vars(self).iteritems())
388
331
                try:
389
 
                    command = self.checker_command % escaped_attrs
 
332
                    command = self.check_command % escaped_attrs
390
333
                except TypeError, error:
391
334
                    logger.error(u'Could not format string "%s":'
392
 
                                 u' %s', self.checker_command, error)
 
335
                                 u' %s', self.check_command, error)
393
336
                    return True # Try again later
394
337
            try:
395
338
                logger.info(u"Starting checker %r for %s",
396
339
                            command, self.name)
397
 
                # We don't need to redirect stdout and stderr, since
398
 
                # in normal mode, that is already done by daemon(),
399
 
                # and in debug mode we don't want to.  (Stdin is
400
 
                # always replaced by /dev/null.)
401
340
                self.checker = subprocess.Popen(command,
402
341
                                                close_fds=True,
403
342
                                                shell=True, cwd="/")
404
 
                if self.use_dbus:
405
 
                    # Emit D-Bus signal
406
 
                    self.CheckerStarted(command)
407
 
                    self.PropertyChanged(
408
 
                        dbus.String("checker_running"),
409
 
                        dbus.Boolean(True, variant_level=1))
410
 
                self.checker_callback_tag = (gobject.child_watch_add
411
 
                                             (self.checker.pid,
412
 
                                              self.checker_callback,
413
 
                                              data=command))
414
 
            except OSError, error:
 
343
                self.checker_callback_tag = gobject.child_watch_add\
 
344
                                            (self.checker.pid,
 
345
                                             self.checker_callback)
 
346
            except subprocess.OSError, error:
415
347
                logger.error(u"Failed to start subprocess: %s",
416
348
                             error)
417
349
        # Re-run this periodically if run by gobject.timeout_add
418
350
        return True
419
 
    
420
351
    def stop_checker(self):
421
352
        """Force the checker process, if any, to stop."""
422
353
        if self.checker_callback_tag:
434
365
            if error.errno != errno.ESRCH: # No such process
435
366
                raise
436
367
        self.checker = None
437
 
        if self.use_dbus:
438
 
            self.PropertyChanged(dbus.String(u"checker_running"),
439
 
                                 dbus.Boolean(False, variant_level=1))
440
 
    
441
368
    def still_valid(self):
442
369
        """Has the timeout not yet passed for this client?"""
443
 
        if not getattr(self, "enabled", False):
444
 
            return False
445
 
        now = datetime.datetime.utcnow()
 
370
        now = datetime.datetime.now()
446
371
        if self.last_checked_ok is None:
447
372
            return now < (self.created + self.timeout)
448
373
        else:
449
374
            return now < (self.last_checked_ok + self.timeout)
450
 
    
451
 
    ## D-Bus methods & signals
452
 
    _interface = u"se.bsnet.fukt.Mandos.Client"
453
 
    
454
 
    # CheckedOK - method
455
 
    CheckedOK = dbus.service.method(_interface)(checked_ok)
456
 
    CheckedOK.__name__ = "CheckedOK"
457
 
    
458
 
    # CheckerCompleted - signal
459
 
    @dbus.service.signal(_interface, signature="nxs")
460
 
    def CheckerCompleted(self, exitcode, waitstatus, command):
461
 
        "D-Bus signal"
462
 
        pass
463
 
    
464
 
    # CheckerStarted - signal
465
 
    @dbus.service.signal(_interface, signature="s")
466
 
    def CheckerStarted(self, command):
467
 
        "D-Bus signal"
468
 
        pass
469
 
    
470
 
    # GetAllProperties - method
471
 
    @dbus.service.method(_interface, out_signature="a{sv}")
472
 
    def GetAllProperties(self):
473
 
        "D-Bus method"
474
 
        return dbus.Dictionary({
475
 
                dbus.String("name"):
476
 
                    dbus.String(self.name, variant_level=1),
477
 
                dbus.String("fingerprint"):
478
 
                    dbus.String(self.fingerprint, variant_level=1),
479
 
                dbus.String("host"):
480
 
                    dbus.String(self.host, variant_level=1),
481
 
                dbus.String("created"):
482
 
                    _datetime_to_dbus(self.created, variant_level=1),
483
 
                dbus.String("last_enabled"):
484
 
                    (_datetime_to_dbus(self.last_enabled,
485
 
                                       variant_level=1)
486
 
                     if self.last_enabled is not None
487
 
                     else dbus.Boolean(False, variant_level=1)),
488
 
                dbus.String("enabled"):
489
 
                    dbus.Boolean(self.enabled, variant_level=1),
490
 
                dbus.String("last_checked_ok"):
491
 
                    (_datetime_to_dbus(self.last_checked_ok,
492
 
                                       variant_level=1)
493
 
                     if self.last_checked_ok is not None
494
 
                     else dbus.Boolean (False, variant_level=1)),
495
 
                dbus.String("timeout"):
496
 
                    dbus.UInt64(self.timeout_milliseconds(),
497
 
                                variant_level=1),
498
 
                dbus.String("interval"):
499
 
                    dbus.UInt64(self.interval_milliseconds(),
500
 
                                variant_level=1),
501
 
                dbus.String("checker"):
502
 
                    dbus.String(self.checker_command,
503
 
                                variant_level=1),
504
 
                dbus.String("checker_running"):
505
 
                    dbus.Boolean(self.checker is not None,
506
 
                                 variant_level=1),
507
 
                dbus.String("object_path"):
508
 
                    dbus.ObjectPath(self.dbus_object_path,
509
 
                                    variant_level=1)
510
 
                }, signature="sv")
511
 
    
512
 
    # IsStillValid - method
513
 
    IsStillValid = (dbus.service.method(_interface, out_signature="b")
514
 
                    (still_valid))
515
 
    IsStillValid.__name__ = "IsStillValid"
516
 
    
517
 
    # PropertyChanged - signal
518
 
    @dbus.service.signal(_interface, signature="sv")
519
 
    def PropertyChanged(self, property, value):
520
 
        "D-Bus signal"
521
 
        pass
522
 
    
523
 
    # SetChecker - method
524
 
    @dbus.service.method(_interface, in_signature="s")
525
 
    def SetChecker(self, checker):
526
 
        "D-Bus setter method"
527
 
        self.checker_command = checker
528
 
        # Emit D-Bus signal
529
 
        self.PropertyChanged(dbus.String(u"checker"),
530
 
                             dbus.String(self.checker_command,
531
 
                                         variant_level=1))
532
 
    
533
 
    # SetHost - method
534
 
    @dbus.service.method(_interface, in_signature="s")
535
 
    def SetHost(self, host):
536
 
        "D-Bus setter method"
537
 
        self.host = host
538
 
        # Emit D-Bus signal
539
 
        self.PropertyChanged(dbus.String(u"host"),
540
 
                             dbus.String(self.host, variant_level=1))
541
 
    
542
 
    # SetInterval - method
543
 
    @dbus.service.method(_interface, in_signature="t")
544
 
    def SetInterval(self, milliseconds):
545
 
        self.interval = datetime.timedelta(0, 0, 0, milliseconds)
546
 
        # Emit D-Bus signal
547
 
        self.PropertyChanged(dbus.String(u"interval"),
548
 
                             (dbus.UInt64(self.interval_milliseconds(),
549
 
                                          variant_level=1)))
550
 
    
551
 
    # SetSecret - method
552
 
    @dbus.service.method(_interface, in_signature="ay",
553
 
                         byte_arrays=True)
554
 
    def SetSecret(self, secret):
555
 
        "D-Bus setter method"
556
 
        self.secret = str(secret)
557
 
    
558
 
    # SetTimeout - method
559
 
    @dbus.service.method(_interface, in_signature="t")
560
 
    def SetTimeout(self, milliseconds):
561
 
        self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
562
 
        # Emit D-Bus signal
563
 
        self.PropertyChanged(dbus.String(u"timeout"),
564
 
                             (dbus.UInt64(self.timeout_milliseconds(),
565
 
                                          variant_level=1)))
566
 
    
567
 
    # Enable - method
568
 
    Enable = dbus.service.method(_interface)(enable)
569
 
    Enable.__name__ = "Enable"
570
 
    
571
 
    # StartChecker - method
572
 
    @dbus.service.method(_interface)
573
 
    def StartChecker(self):
574
 
        "D-Bus method"
575
 
        self.start_checker()
576
 
    
577
 
    # Disable - method
578
 
    @dbus.service.method(_interface)
579
 
    def Disable(self):
580
 
        "D-Bus method"
581
 
        self.disable()
582
 
    
583
 
    # StopChecker - method
584
 
    StopChecker = dbus.service.method(_interface)(stop_checker)
585
 
    StopChecker.__name__ = "StopChecker"
586
 
    
587
 
    del _interface
588
375
 
589
376
 
590
377
def peer_certificate(session):
591
378
    "Return the peer's OpenPGP certificate as a bytestring"
592
379
    # If not an OpenPGP certificate...
593
 
    if (gnutls.library.functions
594
 
        .gnutls_certificate_type_get(session._c_object)
595
 
        != gnutls.library.constants.GNUTLS_CRT_OPENPGP):
 
380
    if gnutls.library.functions.gnutls_certificate_type_get\
 
381
            (session._c_object) \
 
382
           != gnutls.library.constants.GNUTLS_CRT_OPENPGP:
596
383
        # ...do the normal thing
597
384
        return session.peer_certificate
598
 
    list_size = ctypes.c_uint(1)
599
 
    cert_list = (gnutls.library.functions
600
 
                 .gnutls_certificate_get_peers
601
 
                 (session._c_object, ctypes.byref(list_size)))
602
 
    if not bool(cert_list) and list_size.value != 0:
603
 
        raise gnutls.errors.GNUTLSError("error getting peer"
604
 
                                        " certificate")
 
385
    list_size = ctypes.c_uint()
 
386
    cert_list = gnutls.library.functions.gnutls_certificate_get_peers\
 
387
        (session._c_object, ctypes.byref(list_size))
605
388
    if list_size.value == 0:
606
389
        return None
607
390
    cert = cert_list[0]
611
394
def fingerprint(openpgp):
612
395
    "Convert an OpenPGP bytestring to a hexdigit fingerprint string"
613
396
    # New GnuTLS "datum" with the OpenPGP public key
614
 
    datum = (gnutls.library.types
615
 
             .gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
616
 
                                         ctypes.POINTER
617
 
                                         (ctypes.c_ubyte)),
618
 
                             ctypes.c_uint(len(openpgp))))
 
397
    datum = gnutls.library.types.gnutls_datum_t\
 
398
        (ctypes.cast(ctypes.c_char_p(openpgp),
 
399
                     ctypes.POINTER(ctypes.c_ubyte)),
 
400
         ctypes.c_uint(len(openpgp)))
619
401
    # New empty GnuTLS certificate
620
402
    crt = gnutls.library.types.gnutls_openpgp_crt_t()
621
 
    (gnutls.library.functions
622
 
     .gnutls_openpgp_crt_init(ctypes.byref(crt)))
 
403
    gnutls.library.functions.gnutls_openpgp_crt_init\
 
404
        (ctypes.byref(crt))
623
405
    # Import the OpenPGP public key into the certificate
624
 
    (gnutls.library.functions
625
 
     .gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
626
 
                                gnutls.library.constants
627
 
                                .GNUTLS_OPENPGP_FMT_RAW))
628
 
    # Verify the self signature in the key
629
 
    crtverify = ctypes.c_uint()
630
 
    (gnutls.library.functions
631
 
     .gnutls_openpgp_crt_verify_self(crt, 0, ctypes.byref(crtverify)))
632
 
    if crtverify.value != 0:
633
 
        gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
634
 
        raise gnutls.errors.CertificateSecurityError("Verify failed")
 
406
    gnutls.library.functions.gnutls_openpgp_crt_import\
 
407
                    (crt, ctypes.byref(datum),
 
408
                     gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
635
409
    # New buffer for the fingerprint
636
 
    buf = ctypes.create_string_buffer(20)
637
 
    buf_len = ctypes.c_size_t()
 
410
    buffer = ctypes.create_string_buffer(20)
 
411
    buffer_length = ctypes.c_size_t()
638
412
    # Get the fingerprint from the certificate into the buffer
639
 
    (gnutls.library.functions
640
 
     .gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
641
 
                                         ctypes.byref(buf_len)))
 
413
    gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint\
 
414
        (crt, ctypes.byref(buffer), ctypes.byref(buffer_length))
642
415
    # Deinit the certificate
643
416
    gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
644
417
    # Convert the buffer to a Python bytestring
645
 
    fpr = ctypes.string_at(buf, buf_len.value)
 
418
    fpr = ctypes.string_at(buffer, buffer_length.value)
646
419
    # Convert the bytestring to hexadecimal notation
647
420
    hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
648
421
    return hex_fpr
649
422
 
650
423
 
651
 
class TCP_handler(SocketServer.BaseRequestHandler, object):
 
424
class tcp_handler(SocketServer.BaseRequestHandler, object):
652
425
    """A TCP request handler class.
653
426
    Instantiated by IPv6_TCPServer for each request to handle it.
654
427
    Note: This will run in its own forked process."""
655
428
    
656
429
    def handle(self):
657
430
        logger.info(u"TCP connection from: %s",
658
 
                    unicode(self.client_address))
659
 
        session = (gnutls.connection
660
 
                   .ClientSession(self.request,
661
 
                                  gnutls.connection
662
 
                                  .X509Credentials()))
 
431
                     unicode(self.client_address))
 
432
        session = gnutls.connection.ClientSession\
 
433
                  (self.request, gnutls.connection.X509Credentials())
663
434
        
664
435
        line = self.request.makefile().readline()
665
436
        logger.debug(u"Protocol version: %r", line)
678
449
        #priority = ':'.join(("NONE", "+VERS-TLS1.1", "+AES-256-CBC",
679
450
        #                "+SHA1", "+COMP-NULL", "+CTYPE-OPENPGP",
680
451
        #                "+DHE-DSS"))
681
 
        # Use a fallback default, since this MUST be set.
682
 
        priority = self.server.settings.get("priority", "NORMAL")
683
 
        (gnutls.library.functions
684
 
         .gnutls_priority_set_direct(session._c_object,
685
 
                                     priority, None))
 
452
        priority = "NORMAL"             # Fallback default, since this
 
453
                                        # MUST be set.
 
454
        if self.server.settings["priority"]:
 
455
            priority = self.server.settings["priority"]
 
456
        gnutls.library.functions.gnutls_priority_set_direct\
 
457
            (session._c_object, priority, None);
686
458
        
687
459
        try:
688
460
            session.handshake()
691
463
            # Do not run session.bye() here: the session is not
692
464
            # established.  Just abandon the request.
693
465
            return
694
 
        logger.debug(u"Handshake succeeded")
695
466
        try:
696
467
            fpr = fingerprint(peer_certificate(session))
697
468
        except (TypeError, gnutls.errors.GNUTLSError), error:
699
470
            session.bye()
700
471
            return
701
472
        logger.debug(u"Fingerprint: %s", fpr)
 
473
        client = None
702
474
        for c in self.server.clients:
703
475
            if c.fingerprint == fpr:
704
476
                client = c
705
477
                break
706
 
        else:
 
478
        if not client:
707
479
            logger.warning(u"Client not found for fingerprint: %s",
708
480
                           fpr)
709
481
            session.bye()
716
488
                           vars(client))
717
489
            session.bye()
718
490
            return
719
 
        ## This won't work here, since we're in a fork.
720
 
        # client.checked_ok()
721
491
        sent_size = 0
722
492
        while sent_size < len(client.secret):
723
493
            sent = session.send(client.secret[sent_size:])
728
498
        session.bye()
729
499
 
730
500
 
731
 
class IPv6_TCPServer(SocketServer.ForkingMixIn,
732
 
                     SocketServer.TCPServer, object):
 
501
class IPv6_TCPServer(SocketServer.ForkingTCPServer, object):
733
502
    """IPv6 TCP server.  Accepts 'None' as address and/or port.
734
503
    Attributes:
735
504
        settings:       Server settings
736
505
        clients:        Set() of Client objects
737
 
        enabled:        Boolean; whether this server is activated yet
738
506
    """
739
507
    address_family = socket.AF_INET6
740
508
    def __init__(self, *args, **kwargs):
744
512
        if "clients" in kwargs:
745
513
            self.clients = kwargs["clients"]
746
514
            del kwargs["clients"]
747
 
        self.enabled = False
748
 
        super(IPv6_TCPServer, self).__init__(*args, **kwargs)
 
515
        return super(type(self), self).__init__(*args, **kwargs)
749
516
    def server_bind(self):
750
517
        """This overrides the normal server_bind() function
751
518
        to bind to an interface if one was specified, and also NOT to
780
547
#                                            if_nametoindex
781
548
#                                            (self.settings
782
549
#                                             ["interface"]))
783
 
            return super(IPv6_TCPServer, self).server_bind()
784
 
    def server_activate(self):
785
 
        if self.enabled:
786
 
            return super(IPv6_TCPServer, self).server_activate()
787
 
    def enable(self):
788
 
        self.enabled = True
 
550
            return super(type(self), self).server_bind()
789
551
 
790
552
 
791
553
def string_to_delta(interval):
801
563
    datetime.timedelta(1)
802
564
    >>> string_to_delta(u'1w')
803
565
    datetime.timedelta(7)
804
 
    >>> string_to_delta('5m 30s')
805
 
    datetime.timedelta(0, 330)
806
566
    """
807
 
    timevalue = datetime.timedelta(0)
808
 
    for s in interval.split():
809
 
        try:
810
 
            suffix = unicode(s[-1])
811
 
            value = int(s[:-1])
812
 
            if suffix == u"d":
813
 
                delta = datetime.timedelta(value)
814
 
            elif suffix == u"s":
815
 
                delta = datetime.timedelta(0, value)
816
 
            elif suffix == u"m":
817
 
                delta = datetime.timedelta(0, 0, 0, 0, value)
818
 
            elif suffix == u"h":
819
 
                delta = datetime.timedelta(0, 0, 0, 0, 0, value)
820
 
            elif suffix == u"w":
821
 
                delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
822
 
            else:
823
 
                raise ValueError
824
 
        except (ValueError, IndexError):
 
567
    try:
 
568
        suffix=unicode(interval[-1])
 
569
        value=int(interval[:-1])
 
570
        if suffix == u"d":
 
571
            delta = datetime.timedelta(value)
 
572
        elif suffix == u"s":
 
573
            delta = datetime.timedelta(0, value)
 
574
        elif suffix == u"m":
 
575
            delta = datetime.timedelta(0, 0, 0, 0, value)
 
576
        elif suffix == u"h":
 
577
            delta = datetime.timedelta(0, 0, 0, 0, 0, value)
 
578
        elif suffix == u"w":
 
579
            delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
 
580
        else:
825
581
            raise ValueError
826
 
        timevalue += delta
827
 
    return timevalue
 
582
    except (ValueError, IndexError):
 
583
        raise ValueError
 
584
    return delta
828
585
 
829
586
 
830
587
def server_state_changed(state):
831
588
    """Derived from the Avahi example code"""
832
589
    if state == avahi.SERVER_COLLISION:
833
 
        logger.error(u"Zeroconf server name collision")
 
590
        logger.error(u"Server name collision")
834
591
        service.remove()
835
592
    elif state == avahi.SERVER_RUNNING:
836
593
        service.add()
838
595
 
839
596
def entry_group_state_changed(state, error):
840
597
    """Derived from the Avahi example code"""
841
 
    logger.debug(u"Avahi state change: %i", state)
 
598
    logger.debug(u"state change: %i", state)
842
599
    
843
600
    if state == avahi.ENTRY_GROUP_ESTABLISHED:
844
 
        logger.debug(u"Zeroconf service established.")
 
601
        logger.debug(u"Service established.")
845
602
    elif state == avahi.ENTRY_GROUP_COLLISION:
846
 
        logger.warning(u"Zeroconf service name collision.")
 
603
        logger.warning(u"Service name collision.")
847
604
        service.rename()
848
605
    elif state == avahi.ENTRY_GROUP_FAILURE:
849
 
        logger.critical(u"Avahi: Error in group state changed %s",
 
606
        logger.critical(u"Error in group state changed %s",
850
607
                        unicode(error))
851
 
        raise AvahiGroupError(u"State changed: %s" % unicode(error))
 
608
        raise AvahiGroupError("State changed: %s", str(error))
852
609
 
853
610
def if_nametoindex(interface):
854
611
    """Call the C function if_nametoindex(), or equivalent"""
855
612
    global if_nametoindex
856
613
    try:
857
 
        if_nametoindex = (ctypes.cdll.LoadLibrary
858
 
                          (ctypes.util.find_library("c"))
859
 
                          .if_nametoindex)
 
614
        if "ctypes.util" not in sys.modules:
 
615
            import ctypes.util
 
616
        if_nametoindex = ctypes.cdll.LoadLibrary\
 
617
            (ctypes.util.find_library("c")).if_nametoindex
860
618
    except (OSError, AttributeError):
861
619
        if "struct" not in sys.modules:
862
620
            import struct
865
623
        def if_nametoindex(interface):
866
624
            "Get an interface index the hard way, i.e. using fcntl()"
867
625
            SIOCGIFINDEX = 0x8933  # From /usr/include/linux/sockios.h
868
 
            with closing(socket.socket()) as s:
869
 
                ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
870
 
                                    struct.pack("16s16x", interface))
 
626
            s = socket.socket()
 
627
            ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
 
628
                                struct.pack("16s16x", interface))
 
629
            s.close()
871
630
            interface_index = struct.unpack("I", ifreq[16:20])[0]
872
631
            return interface_index
873
632
    return if_nametoindex(interface)
897
656
 
898
657
 
899
658
def main():
900
 
    parser = optparse.OptionParser(version = "%%prog %s" % version)
 
659
    global main_loop_started
 
660
    main_loop_started = False
 
661
    
 
662
    parser = OptionParser(version = "%%prog %s" % version)
901
663
    parser.add_option("-i", "--interface", type="string",
902
664
                      metavar="IF", help="Bind to interface IF")
903
665
    parser.add_option("-a", "--address", type="string",
904
666
                      help="Address to listen for requests on")
905
667
    parser.add_option("-p", "--port", type="int",
906
668
                      help="Port number to receive requests on")
907
 
    parser.add_option("--check", action="store_true",
 
669
    parser.add_option("--check", action="store_true", default=False,
908
670
                      help="Run self-test")
909
671
    parser.add_option("--debug", action="store_true",
910
672
                      help="Debug mode; run in foreground and log to"
917
679
                      default="/etc/mandos", metavar="DIR",
918
680
                      help="Directory to search for configuration"
919
681
                      " files")
920
 
    parser.add_option("--no-dbus", action="store_false",
921
 
                      dest="use_dbus",
922
 
                      help="Do not provide D-Bus system bus"
923
 
                      " interface")
924
 
    options = parser.parse_args()[0]
 
682
    (options, args) = parser.parse_args()
925
683
    
926
684
    if options.check:
927
685
        import doctest
936
694
                        "priority":
937
695
                        "SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
938
696
                        "servicename": "Mandos",
939
 
                        "use_dbus": "True",
940
697
                        }
941
698
    
942
699
    # Parse config file for server-global settings
943
700
    server_config = ConfigParser.SafeConfigParser(server_defaults)
944
701
    del server_defaults
945
702
    server_config.read(os.path.join(options.configdir, "mandos.conf"))
 
703
    server_section = "server"
946
704
    # Convert the SafeConfigParser object to a dict
947
 
    server_settings = server_config.defaults()
948
 
    # Use the appropriate methods on the non-string config options
949
 
    server_settings["debug"] = server_config.getboolean("DEFAULT",
950
 
                                                        "debug")
951
 
    server_settings["use_dbus"] = server_config.getboolean("DEFAULT",
952
 
                                                           "use_dbus")
953
 
    if server_settings["port"]:
954
 
        server_settings["port"] = server_config.getint("DEFAULT",
955
 
                                                       "port")
 
705
    server_settings = dict(server_config.items(server_section))
 
706
    # Use getboolean on the boolean config option
 
707
    server_settings["debug"] = server_config.getboolean\
 
708
                               (server_section, "debug")
956
709
    del server_config
957
710
    
958
711
    # Override the settings from the config file with command line
959
712
    # options, if set.
960
713
    for option in ("interface", "address", "port", "debug",
961
 
                   "priority", "servicename", "configdir",
962
 
                   "use_dbus"):
 
714
                   "priority", "servicename", "configdir"):
963
715
        value = getattr(options, option)
964
716
        if value is not None:
965
717
            server_settings[option] = value
966
718
    del options
967
719
    # Now we have our good server settings in "server_settings"
968
720
    
969
 
    # For convenience
970
721
    debug = server_settings["debug"]
971
 
    use_dbus = server_settings["use_dbus"]
972
722
    
973
723
    if not debug:
974
724
        syslogger.setLevel(logging.WARNING)
975
725
        console.setLevel(logging.WARNING)
976
726
    
977
727
    if server_settings["servicename"] != "Mandos":
978
 
        syslogger.setFormatter(logging.Formatter
 
728
        syslogger.setFormatter(logging.Formatter\
979
729
                               ('Mandos (%s): %%(levelname)s:'
980
730
                                ' %%(message)s'
981
731
                                % server_settings["servicename"]))
984
734
    client_defaults = { "timeout": "1h",
985
735
                        "interval": "5m",
986
736
                        "checker": "fping -q -- %%(host)s",
987
 
                        "host": "",
988
737
                        }
989
738
    client_config = ConfigParser.SafeConfigParser(client_defaults)
990
739
    client_config.read(os.path.join(server_settings["configdir"],
991
740
                                    "clients.conf"))
992
741
    
993
 
    clients = Set()
994
 
    tcp_server = IPv6_TCPServer((server_settings["address"],
995
 
                                 server_settings["port"]),
996
 
                                TCP_handler,
997
 
                                settings=server_settings,
998
 
                                clients=clients)
999
 
    pidfilename = "/var/run/mandos.pid"
1000
 
    try:
1001
 
        pidfile = open(pidfilename, "w")
1002
 
    except IOError, error:
1003
 
        logger.error("Could not open file %r", pidfilename)
1004
 
    
1005
 
    try:
1006
 
        uid = pwd.getpwnam("_mandos").pw_uid
1007
 
        gid = pwd.getpwnam("_mandos").pw_gid
1008
 
    except KeyError:
1009
 
        try:
1010
 
            uid = pwd.getpwnam("mandos").pw_uid
1011
 
            gid = pwd.getpwnam("mandos").pw_gid
1012
 
        except KeyError:
1013
 
            try:
1014
 
                uid = pwd.getpwnam("nobody").pw_uid
1015
 
                gid = pwd.getpwnam("nogroup").pw_gid
1016
 
            except KeyError:
1017
 
                uid = 65534
1018
 
                gid = 65534
1019
 
    try:
1020
 
        os.setuid(uid)
1021
 
        os.setgid(gid)
1022
 
    except OSError, error:
1023
 
        if error[0] != errno.EPERM:
1024
 
            raise error
1025
 
    
1026
742
    global service
1027
743
    service = AvahiService(name = server_settings["servicename"],
1028
 
                           servicetype = "_mandos._tcp", )
 
744
                           type = "_mandos._tcp", );
1029
745
    if server_settings["interface"]:
1030
 
        service.interface = (if_nametoindex
1031
 
                             (server_settings["interface"]))
 
746
        service.interface = if_nametoindex(server_settings["interface"])
1032
747
    
1033
748
    global main_loop
1034
749
    global bus
1037
752
    DBusGMainLoop(set_as_default=True )
1038
753
    main_loop = gobject.MainLoop()
1039
754
    bus = dbus.SystemBus()
1040
 
    server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
1041
 
                                           avahi.DBUS_PATH_SERVER),
1042
 
                            avahi.DBUS_INTERFACE_SERVER)
 
755
    server = dbus.Interface(
 
756
            bus.get_object( avahi.DBUS_NAME, avahi.DBUS_PATH_SERVER ),
 
757
            avahi.DBUS_INTERFACE_SERVER )
1043
758
    # End of Avahi example code
1044
 
    if use_dbus:
1045
 
        bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
 
759
    
 
760
    clients = Set()
 
761
    def remove_from_clients(client):
 
762
        clients.remove(client)
 
763
        if not clients:
 
764
            logger.critical(u"No clients left, exiting")
 
765
            sys.exit()
1046
766
    
1047
767
    clients.update(Set(Client(name = section,
 
768
                              stop_hook = remove_from_clients,
1048
769
                              config
1049
 
                              = dict(client_config.items(section)),
1050
 
                              use_dbus = use_dbus)
 
770
                              = dict(client_config.items(section)))
1051
771
                       for section in client_config.sections()))
1052
772
    if not clients:
1053
 
        logger.warning(u"No clients defined")
 
773
        logger.critical(u"No clients defined")
 
774
        sys.exit(1)
1054
775
    
1055
 
    if debug:
1056
 
        # Redirect stdin so all checkers get /dev/null
1057
 
        null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1058
 
        os.dup2(null, sys.stdin.fileno())
1059
 
        if null > 2:
1060
 
            os.close(null)
1061
 
    else:
1062
 
        # No console logging
 
776
    if not debug:
1063
777
        logger.removeHandler(console)
1064
 
        # Close all input and output, do double fork, etc.
1065
778
        daemon()
1066
779
    
 
780
    pidfilename = "/var/run/mandos/mandos.pid"
 
781
    pid = os.getpid()
1067
782
    try:
1068
 
        pid = os.getpid()
 
783
        pidfile = open(pidfilename, "w")
1069
784
        pidfile.write(str(pid) + "\n")
1070
785
        pidfile.close()
1071
786
        del pidfile
1072
 
    except IOError:
1073
 
        logger.error(u"Could not write to file %r with PID %d",
1074
 
                     pidfilename, pid)
1075
 
    except NameError:
1076
 
        # "pidfile" was never created
1077
 
        pass
1078
 
    del pidfilename
 
787
    except IOError, err:
 
788
        logger.error(u"Could not write %s file with PID %d",
 
789
                     pidfilename, os.getpid())
1079
790
    
1080
791
    def cleanup():
1081
792
        "Cleanup function; run on exit"
1088
799
        
1089
800
        while clients:
1090
801
            client = clients.pop()
1091
 
            client.disable_hook = None
1092
 
            client.disable()
 
802
            client.stop_hook = None
 
803
            client.stop()
1093
804
    
1094
805
    atexit.register(cleanup)
1095
806
    
1098
809
    signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1099
810
    signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1100
811
    
1101
 
    if use_dbus:
1102
 
        class MandosServer(dbus.service.Object):
1103
 
            """A D-Bus proxy object"""
1104
 
            def __init__(self):
1105
 
                dbus.service.Object.__init__(self, bus, "/")
1106
 
            _interface = u"se.bsnet.fukt.Mandos"
1107
 
            
1108
 
            @dbus.service.signal(_interface, signature="oa{sv}")
1109
 
            def ClientAdded(self, objpath, properties):
1110
 
                "D-Bus signal"
1111
 
                pass
1112
 
            
1113
 
            @dbus.service.signal(_interface, signature="os")
1114
 
            def ClientRemoved(self, objpath, name):
1115
 
                "D-Bus signal"
1116
 
                pass
1117
 
            
1118
 
            @dbus.service.method(_interface, out_signature="ao")
1119
 
            def GetAllClients(self):
1120
 
                "D-Bus method"
1121
 
                return dbus.Array(c.dbus_object_path for c in clients)
1122
 
            
1123
 
            @dbus.service.method(_interface, out_signature="a{oa{sv}}")
1124
 
            def GetAllClientsWithProperties(self):
1125
 
                "D-Bus method"
1126
 
                return dbus.Dictionary(
1127
 
                    ((c.dbus_object_path, c.GetAllProperties())
1128
 
                     for c in clients),
1129
 
                    signature="oa{sv}")
1130
 
            
1131
 
            @dbus.service.method(_interface, in_signature="o")
1132
 
            def RemoveClient(self, object_path):
1133
 
                "D-Bus method"
1134
 
                for c in clients:
1135
 
                    if c.dbus_object_path == object_path:
1136
 
                        clients.remove(c)
1137
 
                        # Don't signal anything except ClientRemoved
1138
 
                        c.use_dbus = False
1139
 
                        c.disable()
1140
 
                        # Emit D-Bus signal
1141
 
                        self.ClientRemoved(object_path, c.name)
1142
 
                        return
1143
 
                raise KeyError
1144
 
            
1145
 
            del _interface
1146
 
        
1147
 
        mandos_server = MandosServer()
1148
 
    
1149
812
    for client in clients:
1150
 
        if use_dbus:
1151
 
            # Emit D-Bus signal
1152
 
            mandos_server.ClientAdded(client.dbus_object_path,
1153
 
                                      client.GetAllProperties())
1154
 
        client.enable()
1155
 
    
1156
 
    tcp_server.enable()
1157
 
    tcp_server.server_activate()
1158
 
    
 
813
        client.start()
 
814
    
 
815
    tcp_server = IPv6_TCPServer((server_settings["address"],
 
816
                                 server_settings["port"]),
 
817
                                tcp_handler,
 
818
                                settings=server_settings,
 
819
                                clients=clients)
1159
820
    # Find out what port we got
1160
821
    service.port = tcp_server.socket.getsockname()[1]
1161
822
    logger.info(u"Now listening on address %r, port %d, flowinfo %d,"
1175
836
        
1176
837
        gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1177
838
                             lambda *args, **kwargs:
1178
 
                             (tcp_server.handle_request
1179
 
                              (*args[2:], **kwargs) or True))
 
839
                             tcp_server.handle_request\
 
840
                             (*args[2:], **kwargs) or True)
1180
841
        
1181
842
        logger.debug(u"Starting main loop")
 
843
        main_loop_started = True
1182
844
        main_loop.run()
1183
845
    except AvahiError, error:
1184
 
        logger.critical(u"AvahiError: %s", error)
 
846
        logger.critical(u"AvahiError: %s" + unicode(error))
1185
847
        sys.exit(1)
1186
848
    except KeyboardInterrupt:
1187
849
        if debug: