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  • Committer: Teddy Hogeborn
  • Date: 2008-08-03 01:09:36 UTC
  • mfrom: (24.1.9 mandos)
  • Revision ID: teddy@fukt.bsnet.se-20080803010936-ujme8tgxceszfbi1
* plugbasedclient.c (main): New "--userid" and "--groupid" options.
                            Take an additional non-option argument and
                            parse it as a plus-separated and -prefixed
                            list of additional options.

* plugins.d/mandosclient.c (DH_BITS): Replaced with
                                      "mandos_context.dh_bits".  All
                                      users changed.
  (certdir): Renamed to "keydir".  All users changed.
  (certfile): Renamed to "pubkeyfile".  All users changed.
  (certkey): Renamed to "seckeyfile".  All users changed.
  (encrypted_session): Replaced with "mandos_context".  All users
                       changed.
  (initgnutls): Take additional "session" and "dh_params" arguments.
                All callers changed.
  (start_mandos_communication): Take additional "mc" argument.  All
                                callers changed.  Print target IPv6
                                address if different than supplied
                                string.
  (simple_poll) Replaced with "mandos_context.simple_poll".  All users
                changed.
  (server): Replaced with "mandos_context.server".  All users changed.
  (main): Default interface to "eth0".  Rename "--certdir" to
          "--keydir", "--certkey" to "--seckey", and "--certfile" to
          "--pubkey".  New options "--dh-bits" and "--priority".  If
          the interface is not up, bring it up.

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server.py
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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
25
# 
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
436
        session = gnutls.connection.ClientSession\
447
437
                  (self.request, gnutls.connection.X509Credentials())
448
 
        
449
 
        line = self.request.makefile().readline()
450
 
        logger.debug(u"Protocol version: %r", line)
451
 
        try:
452
 
            if int(line.strip().split()[0]) > 1:
453
 
                raise RuntimeError
454
 
        except (ValueError, IndexError, RuntimeError), error:
455
 
            logger.error(u"Unknown protocol version: %s", error)
456
 
            return
457
 
        
458
438
        # Note: gnutls.connection.X509Credentials is really a generic
459
439
        # GnuTLS certificate credentials object so long as no X.509
460
440
        # keys are added to it.  Therefore, we can use it here despite
473
453
        try:
474
454
            session.handshake()
475
455
        except gnutls.errors.GNUTLSError, error:
476
 
            logger.warning(u"Handshake failed: %s", error)
 
456
            logger.debug(u"Handshake failed: %s", error)
477
457
            # Do not run session.bye() here: the session is not
478
458
            # established.  Just abandon the request.
479
459
            return
480
460
        try:
481
461
            fpr = fingerprint(peer_certificate(session))
482
462
        except (TypeError, gnutls.errors.GNUTLSError), error:
483
 
            logger.warning(u"Bad certificate: %s", error)
 
463
            logger.debug(u"Bad certificate: %s", error)
484
464
            session.bye()
485
465
            return
486
466
        logger.debug(u"Fingerprint: %s", fpr)
490
470
                client = c
491
471
                break
492
472
        if not client:
493
 
            logger.warning(u"Client not found for fingerprint: %s",
494
 
                           fpr)
 
473
            logger.debug(u"Client not found for fingerprint: %s", fpr)
495
474
            session.bye()
496
475
            return
497
476
        # Have to check if client.still_valid(), since it is possible
498
477
        # that the client timed out while establishing the GnuTLS
499
478
        # session.
500
479
        if not client.still_valid():
501
 
            logger.warning(u"Client %(name)s is invalid",
502
 
                           vars(client))
 
480
            logger.debug(u"Client %(name)s is invalid", vars(client))
503
481
            session.bye()
504
482
            return
505
483
        sent_size = 0
540
518
                                       self.settings["interface"])
541
519
            except socket.error, error:
542
520
                if error[0] == errno.EPERM:
543
 
                    logger.error(u"No permission to"
544
 
                                 u" bind to interface %s",
545
 
                                 self.settings["interface"])
 
521
                    logger.warning(u"No permission to"
 
522
                                   u" bind to interface %s",
 
523
                                   self.settings["interface"])
546
524
                else:
547
525
                    raise error
548
526
        # Only bind(2) the socket if we really need to.
551
529
                in6addr_any = "::"
552
530
                self.server_address = (in6addr_any,
553
531
                                       self.server_address[1])
554
 
            elif not self.server_address[1]:
 
532
            elif self.server_address[1] is None:
555
533
                self.server_address = (self.server_address[0],
556
534
                                       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
535
            return super(type(self), self).server_bind()
565
536
 
566
537
 
577
548
    datetime.timedelta(1)
578
549
    >>> string_to_delta(u'1w')
579
550
    datetime.timedelta(7)
580
 
    >>> string_to_delta('5m 30s')
581
 
    datetime.timedelta(0, 330)
582
551
    """
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):
 
552
    try:
 
553
        suffix=unicode(interval[-1])
 
554
        value=int(interval[:-1])
 
555
        if suffix == u"d":
 
556
            delta = datetime.timedelta(value)
 
557
        elif suffix == u"s":
 
558
            delta = datetime.timedelta(0, value)
 
559
        elif suffix == u"m":
 
560
            delta = datetime.timedelta(0, 0, 0, 0, value)
 
561
        elif suffix == u"h":
 
562
            delta = datetime.timedelta(0, 0, 0, 0, 0, value)
 
563
        elif suffix == u"w":
 
564
            delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
 
565
        else:
601
566
            raise ValueError
602
 
        timevalue += delta
603
 
    return timevalue
 
567
    except (ValueError, IndexError):
 
568
        raise ValueError
 
569
    return delta
604
570
 
605
571
 
606
572
def server_state_changed(state):
607
573
    """Derived from the Avahi example code"""
608
574
    if state == avahi.SERVER_COLLISION:
609
 
        logger.error(u"Zeroconf server name collision")
 
575
        logger.warning(u"Server name collision")
610
576
        service.remove()
611
577
    elif state == avahi.SERVER_RUNNING:
612
578
        service.add()
614
580
 
615
581
def entry_group_state_changed(state, error):
616
582
    """Derived from the Avahi example code"""
617
 
    logger.debug(u"Avahi state change: %i", state)
 
583
    logger.debug(u"state change: %i", state)
618
584
    
619
585
    if state == avahi.ENTRY_GROUP_ESTABLISHED:
620
 
        logger.debug(u"Zeroconf service established.")
 
586
        logger.debug(u"Service established.")
621
587
    elif state == avahi.ENTRY_GROUP_COLLISION:
622
 
        logger.warning(u"Zeroconf service name collision.")
 
588
        logger.warning(u"Service name collision.")
623
589
        service.rename()
624
590
    elif state == avahi.ENTRY_GROUP_FAILURE:
625
 
        logger.critical(u"Avahi: Error in group state changed %s",
 
591
        logger.critical(u"Error in group state changed %s",
626
592
                        unicode(error))
627
593
        raise AvahiGroupError("State changed: %s", str(error))
628
594
 
629
 
def if_nametoindex(interface):
 
595
def if_nametoindex(interface, _func=[None]):
630
596
    """Call the C function if_nametoindex(), or equivalent"""
631
 
    global if_nametoindex
 
597
    if _func[0] is not None:
 
598
        return _func[0](interface)
632
599
    try:
633
600
        if "ctypes.util" not in sys.modules:
634
601
            import ctypes.util
635
 
        if_nametoindex = ctypes.cdll.LoadLibrary\
636
 
            (ctypes.util.find_library("c")).if_nametoindex
 
602
        while True:
 
603
            try:
 
604
                libc = ctypes.cdll.LoadLibrary\
 
605
                       (ctypes.util.find_library("c"))
 
606
                _func[0] = libc.if_nametoindex
 
607
                return _func[0](interface)
 
608
            except IOError, e:
 
609
                if e != errno.EINTR:
 
610
                    raise
637
611
    except (OSError, AttributeError):
638
612
        if "struct" not in sys.modules:
639
613
            import struct
640
614
        if "fcntl" not in sys.modules:
641
615
            import fcntl
642
 
        def if_nametoindex(interface):
 
616
        def the_hard_way(interface):
643
617
            "Get an interface index the hard way, i.e. using fcntl()"
644
618
            SIOCGIFINDEX = 0x8933  # From /usr/include/linux/sockios.h
645
619
            s = socket.socket()
648
622
            s.close()
649
623
            interface_index = struct.unpack("I", ifreq[16:20])[0]
650
624
            return interface_index
651
 
    return if_nametoindex(interface)
652
 
 
653
 
 
654
 
def daemon(nochdir = False, noclose = False):
 
625
        _func[0] = the_hard_way
 
626
        return _func[0](interface)
 
627
 
 
628
 
 
629
def daemon(nochdir, noclose):
655
630
    """See daemon(3).  Standard BSD Unix function.
656
631
    This should really exist as os.daemon, but it doesn't (yet)."""
657
632
    if os.fork():
659
634
    os.setsid()
660
635
    if not nochdir:
661
636
        os.chdir("/")
662
 
    if os.fork():
663
 
        sys.exit()
664
637
    if not noclose:
665
638
        # Close all standard open file descriptors
666
639
        null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
678
651
    global main_loop_started
679
652
    main_loop_started = False
680
653
    
681
 
    parser = OptionParser(version = "%%prog %s" % version)
 
654
    parser = OptionParser()
682
655
    parser.add_option("-i", "--interface", type="string",
683
656
                      metavar="IF", help="Bind to interface IF")
684
657
    parser.add_option("-a", "--address", type="string",
687
660
                      help="Port number to receive requests on")
688
661
    parser.add_option("--check", action="store_true", default=False,
689
662
                      help="Run self-test")
690
 
    parser.add_option("--debug", action="store_true",
 
663
    parser.add_option("--debug", action="store_true", default=False,
691
664
                      help="Debug mode; run in foreground and log to"
692
665
                      " terminal")
693
666
    parser.add_option("--priority", type="string", help="GnuTLS"
718
691
    # Parse config file for server-global settings
719
692
    server_config = ConfigParser.SafeConfigParser(server_defaults)
720
693
    del server_defaults
721
 
    server_config.read(os.path.join(options.configdir, "mandos.conf"))
 
694
    server_config.read(os.path.join(options.configdir, "server.conf"))
 
695
    server_section = "server"
722
696
    # Convert the SafeConfigParser object to a dict
723
 
    server_settings = server_config.defaults()
 
697
    server_settings = dict(server_config.items(server_section))
724
698
    # Use getboolean on the boolean config option
725
699
    server_settings["debug"] = server_config.getboolean\
726
 
                               ("DEFAULT", "debug")
 
700
                               (server_section, "debug")
727
701
    del server_config
728
702
    
729
703
    # Override the settings from the config file with command line
736
710
    del options
737
711
    # Now we have our good server settings in "server_settings"
738
712
    
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
713
    # Parse config file with clients
752
714
    client_defaults = { "timeout": "1h",
753
715
                        "interval": "5m",
754
 
                        "checker": "fping -q -- %(host)s",
755
 
                        "host": "",
 
716
                        "checker": "fping -q -- %%(fqdn)s",
756
717
                        }
757
718
    client_config = ConfigParser.SafeConfigParser(client_defaults)
758
719
    client_config.read(os.path.join(server_settings["configdir"],
762
723
    service = AvahiService(name = server_settings["servicename"],
763
724
                           type = "_mandos._tcp", );
764
725
    if server_settings["interface"]:
765
 
        service.interface = if_nametoindex\
766
 
                            (server_settings["interface"])
 
726
        service.interface = if_nametoindex(server_settings["interface"])
767
727
    
768
728
    global main_loop
769
729
    global bus
772
732
    DBusGMainLoop(set_as_default=True )
773
733
    main_loop = gobject.MainLoop()
774
734
    bus = dbus.SystemBus()
775
 
    server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
776
 
                                           avahi.DBUS_PATH_SERVER),
777
 
                            avahi.DBUS_INTERFACE_SERVER)
 
735
    server = dbus.Interface(
 
736
            bus.get_object( avahi.DBUS_NAME, avahi.DBUS_PATH_SERVER ),
 
737
            avahi.DBUS_INTERFACE_SERVER )
778
738
    # End of Avahi example code
779
739
    
 
740
    debug = server_settings["debug"]
 
741
    
 
742
    if debug:
 
743
        console = logging.StreamHandler()
 
744
        # console.setLevel(logging.DEBUG)
 
745
        console.setFormatter(logging.Formatter\
 
746
                             ('%(levelname)s: %(message)s'))
 
747
        logger.addHandler(console)
 
748
        del console
 
749
    
780
750
    clients = Set()
781
751
    def remove_from_clients(client):
782
752
        clients.remove(client)
783
753
        if not clients:
784
 
            logger.critical(u"No clients left, exiting")
 
754
            logger.debug(u"No clients left, exiting")
785
755
            sys.exit()
786
756
    
787
 
    clients.update(Set(Client(name = section,
 
757
    clients.update(Set(Client(name=section,
788
758
                              stop_hook = remove_from_clients,
789
 
                              config
790
 
                              = dict(client_config.items(section)))
 
759
                              **(dict(client_config\
 
760
                                      .items(section))))
791
761
                       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())
 
762
    
 
763
    if not debug:
 
764
        daemon(False, False)
818
765
    
819
766
    def cleanup():
820
767
        "Cleanup function; run on exit"
847
794
                                clients=clients)
848
795
    # Find out what port we got
849
796
    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())
 
797
    logger.debug(u"Now listening on address %r, port %d, flowinfo %d,"
 
798
                 u" scope_id %d" % tcp_server.socket.getsockname())
852
799
    
853
800
    #service.interface = tcp_server.socket.getsockname()[3]
854
801
    
867
814
                             tcp_server.handle_request\
868
815
                             (*args[2:], **kwargs) or True)
869
816
        
870
 
        logger.debug(u"Starting main loop")
 
817
        logger.debug("Starting main loop")
871
818
        main_loop_started = True
872
819
        main_loop.run()
873
820
    except AvahiError, error: