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mandosclient
        Droping privileges
        split gnutls function into global and session

* server.py (if_nametoindex): Redefine itself instead of using a
                              default keyword argument.

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Lines of Context:
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# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>.  This includes the
9
 
# methods "add" and "remove" in the "AvahiService" class, the
10
 
# "server_state_changed" and "entry_group_state_changed" functions,
11
 
# and some lines in "main".
 
9
# following functions: "AvahiService.add", "AvahiService.remove",
 
10
# "server_state_changed", "entry_group_state_changed", and some lines
 
11
# in "main".
12
12
13
13
# Everything else is
14
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# Copyright © 2007-2008 Teddy Hogeborn & Björn Påhlsson
24
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#     GNU General Public License for more details.
25
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26
26
# You should have received a copy of the GNU General Public License
27
 
# along with this program.  If not, see
28
 
# <http://www.gnu.org/licenses/>.
 
27
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
29
28
30
29
# Contact the authors at <mandos@fukt.bsnet.se>.
31
30
62
61
from dbus.mainloop.glib import DBusGMainLoop
63
62
import ctypes
64
63
 
65
 
version = "1.0"
 
64
# Brief description of the operation of this program:
 
65
 
66
# This server announces itself as a Zeroconf service.  Connecting
 
67
# clients use the TLS protocol, with the unusual quirk that this
 
68
# server program acts as a TLS "client" while a connecting client acts
 
69
# as a TLS "server".  The client (acting as a TLS "server") must
 
70
# supply an OpenPGP certificate, and the fingerprint of this
 
71
# certificate is used by this server to look up (in a list read from a
 
72
# file at start time) which binary blob to give the client.  No other
 
73
# authentication or authorization is done by this server.
 
74
 
66
75
 
67
76
logger = logging.Logger('mandos')
68
77
syslogger = logging.handlers.SysLogHandler\
69
 
            (facility = logging.handlers.SysLogHandler.LOG_DAEMON,
70
 
             address = "/dev/log")
 
78
            (facility = logging.handlers.SysLogHandler.LOG_DAEMON)
71
79
syslogger.setFormatter(logging.Formatter\
72
 
                        ('Mandos: %(levelname)s: %(message)s'))
 
80
                        ('%(levelname)s: %(message)s'))
73
81
logger.addHandler(syslogger)
 
82
del syslogger
74
83
 
75
 
console = logging.StreamHandler()
76
 
console.setFormatter(logging.Formatter('%(name)s: %(levelname)s:'
77
 
                                       ' %(message)s'))
78
 
logger.addHandler(console)
79
84
 
80
85
class AvahiError(Exception):
81
86
    def __init__(self, value):
91
96
 
92
97
 
93
98
class AvahiService(object):
94
 
    """An Avahi (Zeroconf) service.
95
 
    Attributes:
 
99
    """
96
100
    interface: integer; avahi.IF_UNSPEC or an interface index.
97
101
               Used to optionally bind to the specified interface.
98
 
    name: string; Example: 'Mandos'
99
 
    type: string; Example: '_mandos._tcp'.
100
 
                  See <http://www.dns-sd.org/ServiceTypes.html>
101
 
    port: integer; what port to announce
102
 
    TXT: list of strings; TXT record for the service
103
 
    domain: string; Domain to publish on, default to .local if empty.
104
 
    host: string; Host to publish records for, default is localhost
105
 
    max_renames: integer; maximum number of renames
106
 
    rename_count: integer; counter so we only rename after collisions
107
 
                  a sensible number of times
 
102
    name = string; Example: "Mandos"
 
103
    type = string; Example: "_mandos._tcp".
 
104
                   See <http://www.dns-sd.org/ServiceTypes.html>
 
105
    port = integer; what port to announce
 
106
    TXT = list of strings; TXT record for the service
 
107
    domain = string; Domain to publish on, default to .local if empty.
 
108
    host = string; Host to publish records for, default to localhost
 
109
                   if empty.
 
110
    max_renames = integer; maximum number of renames
 
111
    rename_count = integer; counter so we only rename after collisions
 
112
                   a sensible number of times
108
113
    """
109
114
    def __init__(self, interface = avahi.IF_UNSPEC, name = None,
110
115
                 type = None, port = None, TXT = None, domain = "",
111
 
                 host = "", max_renames = 32768):
 
116
                 host = "", max_renames = 12):
 
117
        """An Avahi (Zeroconf) service. """
112
118
        self.interface = interface
113
119
        self.name = name
114
120
        self.type = type
120
126
        self.domain = domain
121
127
        self.host = host
122
128
        self.rename_count = 0
123
 
        self.max_renames = max_renames
124
129
    def rename(self):
125
130
        """Derived from the Avahi example code"""
126
131
        if self.rename_count >= self.max_renames:
127
 
            logger.critical(u"No suitable Zeroconf service name found"
128
 
                            u" after %i retries, exiting.",
129
 
                            rename_count)
 
132
            logger.critical(u"No suitable service name found after %i"
 
133
                            u" retries, exiting.", rename_count)
130
134
            raise AvahiServiceError("Too many renames")
131
 
        self.name = server.GetAlternativeServiceName(self.name)
132
 
        logger.info(u"Changing Zeroconf service name to %r ...",
133
 
                    str(self.name))
134
 
        syslogger.setFormatter(logging.Formatter\
135
 
                               ('Mandos (%s): %%(levelname)s:'
136
 
                               ' %%(message)s' % self.name))
 
135
        name = server.GetAlternativeServiceName(name)
 
136
        logger.notice(u"Changing name to %r ...", name)
137
137
        self.remove()
138
138
        self.add()
139
139
        self.rename_count += 1
151
151
                     avahi.DBUS_INTERFACE_ENTRY_GROUP)
152
152
            group.connect_to_signal('StateChanged',
153
153
                                    entry_group_state_changed)
154
 
        logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
 
154
        logger.debug(u"Adding service '%s' of type '%s' ...",
155
155
                     service.name, service.type)
156
156
        group.AddService(
157
157
                self.interface,         # interface
175
175
    fingerprint: string (40 or 32 hexadecimal digits); used to
176
176
                 uniquely identify the client
177
177
    secret:    bytestring; sent verbatim (over TLS) to client
178
 
    host:      string; available for use by the checker command
 
178
    fqdn:      string (FQDN); available for use by the checker command
179
179
    created:   datetime.datetime(); object creation, not client host
180
180
    last_checked_ok: datetime.datetime() or None if not yet checked OK
181
181
    timeout:   datetime.timedelta(); How long from last_checked_ok
221
221
    interval = property(lambda self: self._interval,
222
222
                        _set_interval)
223
223
    del _set_interval
224
 
    def __init__(self, name = None, stop_hook=None, config={}):
225
 
        """Note: the 'checker' key in 'config' sets the
226
 
        'checker_command' attribute and *not* the 'checker'
227
 
        attribute."""
 
224
    def __init__(self, name=None, stop_hook=None, fingerprint=None,
 
225
                 secret=None, secfile=None, fqdn=None, timeout=None,
 
226
                 interval=-1, checker=None):
 
227
        """Note: the 'checker' argument sets the 'checker_command'
 
228
        attribute and not the 'checker' attribute.."""
228
229
        self.name = name
229
230
        logger.debug(u"Creating client %r", self.name)
230
 
        # Uppercase and remove spaces from fingerprint for later
231
 
        # comparison purposes with return value from the fingerprint()
232
 
        # function
233
 
        self.fingerprint = config["fingerprint"].upper()\
234
 
                           .replace(u" ", u"")
 
231
        # Uppercase and remove spaces from fingerprint
 
232
        # for later comparison purposes with return value of
 
233
        # the fingerprint() function
 
234
        self.fingerprint = fingerprint.upper().replace(u" ", u"")
235
235
        logger.debug(u"  Fingerprint: %s", self.fingerprint)
236
 
        if "secret" in config:
237
 
            self.secret = config["secret"].decode(u"base64")
238
 
        elif "secfile" in config:
239
 
            sf = open(config["secfile"])
 
236
        if secret:
 
237
            self.secret = secret.decode(u"base64")
 
238
        elif secfile:
 
239
            sf = open(secfile)
240
240
            self.secret = sf.read()
241
241
            sf.close()
242
242
        else:
243
243
            raise TypeError(u"No secret or secfile for client %s"
244
244
                            % self.name)
245
 
        self.host = config.get("host", "")
 
245
        self.fqdn = fqdn
246
246
        self.created = datetime.datetime.now()
247
247
        self.last_checked_ok = None
248
 
        self.timeout = string_to_delta(config["timeout"])
249
 
        self.interval = string_to_delta(config["interval"])
 
248
        self.timeout = string_to_delta(timeout)
 
249
        self.interval = string_to_delta(interval)
250
250
        self.stop_hook = stop_hook
251
251
        self.checker = None
252
252
        self.checker_initiator_tag = None
253
253
        self.stop_initiator_tag = None
254
254
        self.checker_callback_tag = None
255
 
        self.check_command = config["checker"]
 
255
        self.check_command = checker
256
256
    def start(self):
257
257
        """Start this client's checker and timeout hooks"""
258
258
        # Schedule a new checker to be started an 'interval' from now,
271
271
        The possibility that a client might be restarted is left open,
272
272
        but not currently used."""
273
273
        # If this client doesn't have a secret, it is already stopped.
274
 
        if hasattr(self, "secret") and self.secret:
275
 
            logger.info(u"Stopping client %s", self.name)
 
274
        if self.secret:
 
275
            logger.debug(u"Stopping client %s", self.name)
276
276
            self.secret = None
277
277
        else:
278
278
            return False
297
297
        self.checker = None
298
298
        if os.WIFEXITED(condition) \
299
299
               and (os.WEXITSTATUS(condition) == 0):
300
 
            logger.info(u"Checker for %(name)s succeeded",
301
 
                        vars(self))
 
300
            logger.debug(u"Checker for %(name)s succeeded",
 
301
                         vars(self))
302
302
            self.last_checked_ok = now
303
303
            gobject.source_remove(self.stop_initiator_tag)
304
304
            self.stop_initiator_tag = gobject.timeout_add\
308
308
            logger.warning(u"Checker for %(name)s crashed?",
309
309
                           vars(self))
310
310
        else:
311
 
            logger.info(u"Checker for %(name)s failed",
312
 
                        vars(self))
 
311
            logger.debug(u"Checker for %(name)s failed",
 
312
                         vars(self))
313
313
    def start_checker(self):
314
314
        """Start a new checker subprocess if one is not running.
315
315
        If a checker already exists, leave it running and do
325
325
        if self.checker is None:
326
326
            try:
327
327
                # In case check_command has exactly one % operator
328
 
                command = self.check_command % self.host
 
328
                command = self.check_command % self.fqdn
329
329
            except TypeError:
330
330
                # Escape attributes for the shell
331
331
                escaped_attrs = dict((key, re.escape(str(val)))
338
338
                                 u' %s', self.check_command, error)
339
339
                    return True # Try again later
340
340
            try:
341
 
                logger.info(u"Starting checker %r for %s",
342
 
                            command, self.name)
343
 
                # We don't need to redirect stdout and stderr, since
344
 
                # in normal mode, that is already done by daemon(),
345
 
                # and in debug mode we don't want to.  (Stdin is
346
 
                # always replaced by /dev/null.)
 
341
                logger.debug(u"Starting checker %r for %s",
 
342
                             command, self.name)
347
343
                self.checker = subprocess.Popen(command,
348
344
                                                close_fds=True,
349
345
                                                shell=True, cwd="/")
350
346
                self.checker_callback_tag = gobject.child_watch_add\
351
347
                                            (self.checker.pid,
352
348
                                             self.checker_callback)
353
 
            except OSError, error:
 
349
            except subprocess.OSError, error:
354
350
                logger.error(u"Failed to start subprocess: %s",
355
351
                             error)
356
352
        # Re-run this periodically if run by gobject.timeout_add
362
358
            self.checker_callback_tag = None
363
359
        if getattr(self, "checker", None) is None:
364
360
            return
365
 
        logger.debug(u"Stopping checker for %(name)s", vars(self))
 
361
        logger.debug("Stopping checker for %(name)s", vars(self))
366
362
        try:
367
363
            os.kill(self.checker.pid, signal.SIGTERM)
368
364
            #os.sleep(0.5)
400
396
 
401
397
def fingerprint(openpgp):
402
398
    "Convert an OpenPGP bytestring to a hexdigit fingerprint string"
 
399
    # New empty GnuTLS certificate
 
400
    crt = gnutls.library.types.gnutls_openpgp_crt_t()
 
401
    gnutls.library.functions.gnutls_openpgp_crt_init\
 
402
        (ctypes.byref(crt))
403
403
    # New GnuTLS "datum" with the OpenPGP public key
404
404
    datum = gnutls.library.types.gnutls_datum_t\
405
405
        (ctypes.cast(ctypes.c_char_p(openpgp),
406
406
                     ctypes.POINTER(ctypes.c_ubyte)),
407
407
         ctypes.c_uint(len(openpgp)))
408
 
    # New empty GnuTLS certificate
409
 
    crt = gnutls.library.types.gnutls_openpgp_crt_t()
410
 
    gnutls.library.functions.gnutls_openpgp_crt_init\
411
 
        (ctypes.byref(crt))
412
408
    # Import the OpenPGP public key into the certificate
413
 
    gnutls.library.functions.gnutls_openpgp_crt_import\
414
 
                    (crt, ctypes.byref(datum),
415
 
                     gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
416
 
    # Verify the self signature in the key
417
 
    crtverify = ctypes.c_uint();
418
 
    gnutls.library.functions.gnutls_openpgp_crt_verify_self\
419
 
        (crt, 0, ctypes.byref(crtverify))
420
 
    if crtverify.value != 0:
421
 
        gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
422
 
        raise gnutls.errors.CertificateSecurityError("Verify failed")
 
409
    ret = gnutls.library.functions.gnutls_openpgp_crt_import\
 
410
        (crt,
 
411
         ctypes.byref(datum),
 
412
         gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
423
413
    # New buffer for the fingerprint
424
414
    buffer = ctypes.create_string_buffer(20)
425
415
    buffer_length = ctypes.c_size_t()
441
431
    Note: This will run in its own forked process."""
442
432
    
443
433
    def handle(self):
444
 
        logger.info(u"TCP connection from: %s",
 
434
        logger.debug(u"TCP connection from: %s",
445
435
                     unicode(self.client_address))
446
 
        session = gnutls.connection.ClientSession\
447
 
                  (self.request, gnutls.connection.X509Credentials())
448
 
        
 
436
 
449
437
        line = self.request.makefile().readline()
450
438
        logger.debug(u"Protocol version: %r", line)
451
439
        try:
455
443
            logger.error(u"Unknown protocol version: %s", error)
456
444
            return
457
445
        
 
446
        session = gnutls.connection.ClientSession\
 
447
                  (self.request, gnutls.connection.X509Credentials())
458
448
        # Note: gnutls.connection.X509Credentials is really a generic
459
449
        # GnuTLS certificate credentials object so long as no X.509
460
450
        # keys are added to it.  Therefore, we can use it here despite
473
463
        try:
474
464
            session.handshake()
475
465
        except gnutls.errors.GNUTLSError, error:
476
 
            logger.warning(u"Handshake failed: %s", error)
 
466
            logger.debug(u"Handshake failed: %s", error)
477
467
            # Do not run session.bye() here: the session is not
478
468
            # established.  Just abandon the request.
479
469
            return
480
470
        try:
481
471
            fpr = fingerprint(peer_certificate(session))
482
472
        except (TypeError, gnutls.errors.GNUTLSError), error:
483
 
            logger.warning(u"Bad certificate: %s", error)
 
473
            logger.debug(u"Bad certificate: %s", error)
484
474
            session.bye()
485
475
            return
486
476
        logger.debug(u"Fingerprint: %s", fpr)
490
480
                client = c
491
481
                break
492
482
        if not client:
493
 
            logger.warning(u"Client not found for fingerprint: %s",
494
 
                           fpr)
 
483
            logger.debug(u"Client not found for fingerprint: %s", fpr)
495
484
            session.bye()
496
485
            return
497
486
        # Have to check if client.still_valid(), since it is possible
498
487
        # that the client timed out while establishing the GnuTLS
499
488
        # session.
500
489
        if not client.still_valid():
501
 
            logger.warning(u"Client %(name)s is invalid",
502
 
                           vars(client))
 
490
            logger.debug(u"Client %(name)s is invalid", vars(client))
503
491
            session.bye()
504
492
            return
505
493
        sent_size = 0
540
528
                                       self.settings["interface"])
541
529
            except socket.error, error:
542
530
                if error[0] == errno.EPERM:
543
 
                    logger.error(u"No permission to"
544
 
                                 u" bind to interface %s",
545
 
                                 self.settings["interface"])
 
531
                    logger.warning(u"No permission to"
 
532
                                   u" bind to interface %s",
 
533
                                   self.settings["interface"])
546
534
                else:
547
535
                    raise error
548
536
        # Only bind(2) the socket if we really need to.
551
539
                in6addr_any = "::"
552
540
                self.server_address = (in6addr_any,
553
541
                                       self.server_address[1])
554
 
            elif not self.server_address[1]:
 
542
            elif self.server_address[1] is None:
555
543
                self.server_address = (self.server_address[0],
556
544
                                       0)
557
 
#                 if self.settings["interface"]:
558
 
#                     self.server_address = (self.server_address[0],
559
 
#                                            0, # port
560
 
#                                            0, # flowinfo
561
 
#                                            if_nametoindex
562
 
#                                            (self.settings
563
 
#                                             ["interface"]))
564
545
            return super(type(self), self).server_bind()
565
546
 
566
547
 
577
558
    datetime.timedelta(1)
578
559
    >>> string_to_delta(u'1w')
579
560
    datetime.timedelta(7)
580
 
    >>> string_to_delta('5m 30s')
581
 
    datetime.timedelta(0, 330)
582
561
    """
583
 
    timevalue = datetime.timedelta(0)
584
 
    for s in interval.split():
585
 
        try:
586
 
            suffix=unicode(s[-1])
587
 
            value=int(s[:-1])
588
 
            if suffix == u"d":
589
 
                delta = datetime.timedelta(value)
590
 
            elif suffix == u"s":
591
 
                delta = datetime.timedelta(0, value)
592
 
            elif suffix == u"m":
593
 
                delta = datetime.timedelta(0, 0, 0, 0, value)
594
 
            elif suffix == u"h":
595
 
                delta = datetime.timedelta(0, 0, 0, 0, 0, value)
596
 
            elif suffix == u"w":
597
 
                delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
598
 
            else:
599
 
                raise ValueError
600
 
        except (ValueError, IndexError):
 
562
    try:
 
563
        suffix=unicode(interval[-1])
 
564
        value=int(interval[:-1])
 
565
        if suffix == u"d":
 
566
            delta = datetime.timedelta(value)
 
567
        elif suffix == u"s":
 
568
            delta = datetime.timedelta(0, value)
 
569
        elif suffix == u"m":
 
570
            delta = datetime.timedelta(0, 0, 0, 0, value)
 
571
        elif suffix == u"h":
 
572
            delta = datetime.timedelta(0, 0, 0, 0, 0, value)
 
573
        elif suffix == u"w":
 
574
            delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
 
575
        else:
601
576
            raise ValueError
602
 
        timevalue += delta
603
 
    return timevalue
 
577
    except (ValueError, IndexError):
 
578
        raise ValueError
 
579
    return delta
604
580
 
605
581
 
606
582
def server_state_changed(state):
607
583
    """Derived from the Avahi example code"""
608
584
    if state == avahi.SERVER_COLLISION:
609
 
        logger.error(u"Zeroconf server name collision")
 
585
        logger.warning(u"Server name collision")
610
586
        service.remove()
611
587
    elif state == avahi.SERVER_RUNNING:
612
588
        service.add()
614
590
 
615
591
def entry_group_state_changed(state, error):
616
592
    """Derived from the Avahi example code"""
617
 
    logger.debug(u"Avahi state change: %i", state)
 
593
    logger.debug(u"state change: %i", state)
618
594
    
619
595
    if state == avahi.ENTRY_GROUP_ESTABLISHED:
620
 
        logger.debug(u"Zeroconf service established.")
 
596
        logger.debug(u"Service established.")
621
597
    elif state == avahi.ENTRY_GROUP_COLLISION:
622
 
        logger.warning(u"Zeroconf service name collision.")
 
598
        logger.warning(u"Service name collision.")
623
599
        service.rename()
624
600
    elif state == avahi.ENTRY_GROUP_FAILURE:
625
 
        logger.critical(u"Avahi: Error in group state changed %s",
 
601
        logger.critical(u"Error in group state changed %s",
626
602
                        unicode(error))
627
603
        raise AvahiGroupError("State changed: %s", str(error))
628
604
 
651
627
    return if_nametoindex(interface)
652
628
 
653
629
 
654
 
def daemon(nochdir = False, noclose = False):
 
630
def daemon(nochdir, noclose):
655
631
    """See daemon(3).  Standard BSD Unix function.
656
632
    This should really exist as os.daemon, but it doesn't (yet)."""
657
633
    if os.fork():
659
635
    os.setsid()
660
636
    if not nochdir:
661
637
        os.chdir("/")
662
 
    if os.fork():
663
 
        sys.exit()
664
638
    if not noclose:
665
639
        # Close all standard open file descriptors
666
640
        null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
678
652
    global main_loop_started
679
653
    main_loop_started = False
680
654
    
681
 
    parser = OptionParser(version = "%%prog %s" % version)
 
655
    parser = OptionParser()
682
656
    parser.add_option("-i", "--interface", type="string",
683
657
                      metavar="IF", help="Bind to interface IF")
684
658
    parser.add_option("-a", "--address", type="string",
687
661
                      help="Port number to receive requests on")
688
662
    parser.add_option("--check", action="store_true", default=False,
689
663
                      help="Run self-test")
690
 
    parser.add_option("--debug", action="store_true",
 
664
    parser.add_option("--debug", action="store_true", default=False,
691
665
                      help="Debug mode; run in foreground and log to"
692
666
                      " terminal")
693
667
    parser.add_option("--priority", type="string", help="GnuTLS"
718
692
    # Parse config file for server-global settings
719
693
    server_config = ConfigParser.SafeConfigParser(server_defaults)
720
694
    del server_defaults
721
 
    server_config.read(os.path.join(options.configdir, "mandos.conf"))
 
695
    server_config.read(os.path.join(options.configdir, "server.conf"))
 
696
    server_section = "server"
722
697
    # Convert the SafeConfigParser object to a dict
723
 
    server_settings = server_config.defaults()
 
698
    server_settings = dict(server_config.items(server_section))
724
699
    # Use getboolean on the boolean config option
725
700
    server_settings["debug"] = server_config.getboolean\
726
 
                               ("DEFAULT", "debug")
 
701
                               (server_section, "debug")
727
702
    del server_config
728
703
    
729
704
    # Override the settings from the config file with command line
736
711
    del options
737
712
    # Now we have our good server settings in "server_settings"
738
713
    
739
 
    debug = server_settings["debug"]
740
 
    
741
 
    if not debug:
742
 
        syslogger.setLevel(logging.WARNING)
743
 
        console.setLevel(logging.WARNING)
744
 
    
745
 
    if server_settings["servicename"] != "Mandos":
746
 
        syslogger.setFormatter(logging.Formatter\
747
 
                               ('Mandos (%s): %%(levelname)s:'
748
 
                                ' %%(message)s'
749
 
                                % server_settings["servicename"]))
750
 
    
751
714
    # Parse config file with clients
752
715
    client_defaults = { "timeout": "1h",
753
716
                        "interval": "5m",
754
 
                        "checker": "fping -q -- %(host)s",
755
 
                        "host": "",
 
717
                        "checker": "fping -q -- %%(fqdn)s",
756
718
                        }
757
719
    client_config = ConfigParser.SafeConfigParser(client_defaults)
758
720
    client_config.read(os.path.join(server_settings["configdir"],
762
724
    service = AvahiService(name = server_settings["servicename"],
763
725
                           type = "_mandos._tcp", );
764
726
    if server_settings["interface"]:
765
 
        service.interface = if_nametoindex\
766
 
                            (server_settings["interface"])
 
727
        service.interface = if_nametoindex(server_settings["interface"])
767
728
    
768
729
    global main_loop
769
730
    global bus
772
733
    DBusGMainLoop(set_as_default=True )
773
734
    main_loop = gobject.MainLoop()
774
735
    bus = dbus.SystemBus()
775
 
    server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
776
 
                                           avahi.DBUS_PATH_SERVER),
777
 
                            avahi.DBUS_INTERFACE_SERVER)
 
736
    server = dbus.Interface(
 
737
            bus.get_object( avahi.DBUS_NAME, avahi.DBUS_PATH_SERVER ),
 
738
            avahi.DBUS_INTERFACE_SERVER )
778
739
    # End of Avahi example code
779
740
    
 
741
    debug = server_settings["debug"]
 
742
    
 
743
    if debug:
 
744
        console = logging.StreamHandler()
 
745
        # console.setLevel(logging.DEBUG)
 
746
        console.setFormatter(logging.Formatter\
 
747
                             ('%(levelname)s: %(message)s'))
 
748
        logger.addHandler(console)
 
749
        del console
 
750
    
780
751
    clients = Set()
781
752
    def remove_from_clients(client):
782
753
        clients.remove(client)
783
754
        if not clients:
784
 
            logger.critical(u"No clients left, exiting")
 
755
            logger.debug(u"No clients left, exiting")
785
756
            sys.exit()
786
757
    
787
 
    clients.update(Set(Client(name = section,
 
758
    clients.update(Set(Client(name=section,
788
759
                              stop_hook = remove_from_clients,
789
 
                              config
790
 
                              = dict(client_config.items(section)))
 
760
                              **(dict(client_config\
 
761
                                      .items(section))))
791
762
                       for section in client_config.sections()))
792
 
    if not clients:
793
 
        logger.critical(u"No clients defined")
794
 
        sys.exit(1)
795
 
    
796
 
    if debug:
797
 
        # Redirect stdin so all checkers get /dev/null
798
 
        null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
799
 
        os.dup2(null, sys.stdin.fileno())
800
 
        if null > 2:
801
 
            os.close(null)
802
 
    else:
803
 
        # No console logging
804
 
        logger.removeHandler(console)
805
 
        # Close all input and output, do double fork, etc.
806
 
        daemon()
807
 
    
808
 
    pidfilename = "/var/run/mandos/mandos.pid"
809
 
    pid = os.getpid()
810
 
    try:
811
 
        pidfile = open(pidfilename, "w")
812
 
        pidfile.write(str(pid) + "\n")
813
 
        pidfile.close()
814
 
        del pidfile
815
 
    except IOError, err:
816
 
        logger.error(u"Could not write %s file with PID %d",
817
 
                     pidfilename, os.getpid())
 
763
    
 
764
    if not debug:
 
765
        daemon(False, False)
818
766
    
819
767
    def cleanup():
820
768
        "Cleanup function; run on exit"
847
795
                                clients=clients)
848
796
    # Find out what port we got
849
797
    service.port = tcp_server.socket.getsockname()[1]
850
 
    logger.info(u"Now listening on address %r, port %d, flowinfo %d,"
851
 
                u" scope_id %d" % tcp_server.socket.getsockname())
 
798
    logger.debug(u"Now listening on address %r, port %d, flowinfo %d,"
 
799
                 u" scope_id %d" % tcp_server.socket.getsockname())
852
800
    
853
801
    #service.interface = tcp_server.socket.getsockname()[3]
854
802
    
867
815
                             tcp_server.handle_request\
868
816
                             (*args[2:], **kwargs) or True)
869
817
        
870
 
        logger.debug(u"Starting main loop")
 
818
        logger.debug("Starting main loop")
871
819
        main_loop_started = True
872
820
        main_loop.run()
873
821
    except AvahiError, error: