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server.py
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                            u" retries, exiting.", rename_count)
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            raise AvahiServiceError("Too many renames")
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        name = server.GetAlternativeServiceName(name)
136
 
        logger.notice(u"Changing name to %r ...", name)
 
136
        logger.error(u"Changing name to %r ...", name)
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        self.remove()
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        self.add()
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        self.rename_count += 1
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    interval = property(lambda self: self._interval,
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                        _set_interval)
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    del _set_interval
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):
 
224
    def __init__(self, name = None, stop_hook=None, config={}):
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        """Note: the 'checker' argument sets the 'checker_command'
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        attribute and not the 'checker' attribute.."""
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        self.name = name
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        # Uppercase and remove spaces from fingerprint
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        # for later comparison purposes with return value of
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        # the fingerprint() function
234
 
        self.fingerprint = fingerprint.upper().replace(u" ", u"")
 
232
        self.fingerprint = config["fingerprint"].upper()\
 
233
                           .replace(u" ", u"")
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        logger.debug(u"  Fingerprint: %s", self.fingerprint)
236
 
        if secret:
237
 
            self.secret = secret.decode(u"base64")
238
 
        elif secfile:
239
 
            sf = open(secfile)
 
235
        if "secret" in config:
 
236
            self.secret = config["secret"].decode(u"base64")
 
237
        elif "secfile" in config:
 
238
            sf = open(config["secfile"])
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            self.secret = sf.read()
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            sf.close()
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        else:
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            raise TypeError(u"No secret or secfile for client %s"
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                            % self.name)
245
 
        self.fqdn = fqdn
 
244
        self.fqdn = config.get("fqdn", "")
246
245
        self.created = datetime.datetime.now()
247
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        self.last_checked_ok = None
248
 
        self.timeout = string_to_delta(timeout)
249
 
        self.interval = string_to_delta(interval)
 
247
        self.timeout = string_to_delta(config["timeout"])
 
248
        self.interval = string_to_delta(config["interval"])
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        self.stop_hook = stop_hook
251
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        self.checker = None
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        self.checker_initiator_tag = None
253
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        self.stop_initiator_tag = None
254
253
        self.checker_callback_tag = None
255
 
        self.check_command = checker
 
254
        self.check_command = config["checker"]
256
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    def start(self):
257
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        """Start this client's checker and timeout hooks"""
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        # Schedule a new checker to be started an 'interval' from now,
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        but not currently used."""
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        # If this client doesn't have a secret, it is already stopped.
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        if self.secret:
275
 
            logger.debug(u"Stopping client %s", self.name)
 
274
            logger.info(u"Stopping client %s", self.name)
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            self.secret = None
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        else:
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            return False
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        self.checker = None
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        if os.WIFEXITED(condition) \
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               and (os.WEXITSTATUS(condition) == 0):
300
 
            logger.debug(u"Checker for %(name)s succeeded",
301
 
                         vars(self))
 
299
            logger.info(u"Checker for %(name)s succeeded",
 
300
                        vars(self))
302
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            self.last_checked_ok = now
303
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            gobject.source_remove(self.stop_initiator_tag)
304
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            self.stop_initiator_tag = gobject.timeout_add\
308
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            logger.warning(u"Checker for %(name)s crashed?",
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                           vars(self))
310
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        else:
311
 
            logger.debug(u"Checker for %(name)s failed",
312
 
                         vars(self))
 
310
            logger.info(u"Checker for %(name)s failed",
 
311
                        vars(self))
313
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    def start_checker(self):
314
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        """Start a new checker subprocess if one is not running.
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        If a checker already exists, leave it running and do
338
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                                 u' %s', self.check_command, error)
339
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                    return True # Try again later
340
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            try:
341
 
                logger.debug(u"Starting checker %r for %s",
342
 
                             command, self.name)
 
340
                logger.info(u"Starting checker %r for %s",
 
341
                            command, self.name)
343
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                self.checker = subprocess.Popen(command,
344
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                                                close_fds=True,
345
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                                                shell=True, cwd="/")
431
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    Note: This will run in its own forked process."""
432
431
    
433
432
    def handle(self):
434
 
        logger.debug(u"TCP connection from: %s",
 
433
        logger.info(u"TCP connection from: %s",
435
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                     unicode(self.client_address))
436
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        session = gnutls.connection.ClientSession\
437
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                  (self.request, gnutls.connection.X509Credentials())
 
437
        
 
438
        line = self.request.makefile().readline()
 
439
        logger.debug(u"Protocol version: %r", line)
 
440
        try:
 
441
            if int(line.strip().split()[0]) > 1:
 
442
                raise RuntimeError
 
443
        except (ValueError, IndexError, RuntimeError), error:
 
444
            logger.error(u"Unknown protocol version: %s", error)
 
445
            return
 
446
        
438
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        # Note: gnutls.connection.X509Credentials is really a generic
439
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        # GnuTLS certificate credentials object so long as no X.509
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        # keys are added to it.  Therefore, we can use it here despite
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        try:
454
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            session.handshake()
455
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        except gnutls.errors.GNUTLSError, error:
456
 
            logger.debug(u"Handshake failed: %s", error)
 
465
            logger.warning(u"Handshake failed: %s", error)
457
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            # Do not run session.bye() here: the session is not
458
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            # established.  Just abandon the request.
459
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            return
460
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        try:
461
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            fpr = fingerprint(peer_certificate(session))
462
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        except (TypeError, gnutls.errors.GNUTLSError), error:
463
 
            logger.debug(u"Bad certificate: %s", error)
 
472
            logger.warning(u"Bad certificate: %s", error)
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            session.bye()
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            return
466
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        logger.debug(u"Fingerprint: %s", fpr)
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                client = c
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                break
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        if not client:
473
 
            logger.debug(u"Client not found for fingerprint: %s", fpr)
 
482
            logger.warning(u"Client not found for fingerprint: %s",
 
483
                           fpr)
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            session.bye()
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            return
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        # Have to check if client.still_valid(), since it is possible
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        # that the client timed out while establishing the GnuTLS
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        # session.
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        if not client.still_valid():
480
 
            logger.debug(u"Client %(name)s is invalid", vars(client))
 
490
            logger.warning(u"Client %(name)s is invalid",
 
491
                           vars(client))
481
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            session.bye()
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            return
483
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        sent_size = 0
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                                       self.settings["interface"])
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            except socket.error, error:
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                if error[0] == errno.EPERM:
521
 
                    logger.warning(u"No permission to"
522
 
                                   u" bind to interface %s",
523
 
                                   self.settings["interface"])
 
532
                    logger.error(u"No permission to"
 
533
                                 u" bind to interface %s",
 
534
                                 self.settings["interface"])
524
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                else:
525
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                    raise error
526
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        # Only bind(2) the socket if we really need to.
572
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def server_state_changed(state):
573
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    """Derived from the Avahi example code"""
574
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    if state == avahi.SERVER_COLLISION:
575
 
        logger.warning(u"Server name collision")
 
586
        logger.error(u"Server name collision")
576
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        service.remove()
577
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    elif state == avahi.SERVER_RUNNING:
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        service.add()
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                        unicode(error))
593
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        raise AvahiGroupError("State changed: %s", str(error))
594
605
 
595
 
def if_nametoindex(interface, _func=[None]):
 
606
def if_nametoindex(interface):
596
607
    """Call the C function if_nametoindex(), or equivalent"""
597
 
    if _func[0] is not None:
598
 
        return _func[0](interface)
 
608
    global if_nametoindex
599
609
    try:
600
610
        if "ctypes.util" not in sys.modules:
601
611
            import ctypes.util
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
 
612
        if_nametoindex = ctypes.cdll.LoadLibrary\
 
613
            (ctypes.util.find_library("c")).if_nametoindex
611
614
    except (OSError, AttributeError):
612
615
        if "struct" not in sys.modules:
613
616
            import struct
614
617
        if "fcntl" not in sys.modules:
615
618
            import fcntl
616
 
        def the_hard_way(interface):
 
619
        def if_nametoindex(interface):
617
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            "Get an interface index the hard way, i.e. using fcntl()"
618
621
            SIOCGIFINDEX = 0x8933  # From /usr/include/linux/sockios.h
619
622
            s = socket.socket()
622
625
            s.close()
623
626
            interface_index = struct.unpack("I", ifreq[16:20])[0]
624
627
            return interface_index
625
 
        _func[0] = the_hard_way
626
 
        return _func[0](interface)
 
628
    return if_nametoindex(interface)
627
629
 
628
630
 
629
631
def daemon(nochdir, noclose):
751
753
    def remove_from_clients(client):
752
754
        clients.remove(client)
753
755
        if not clients:
754
 
            logger.debug(u"No clients left, exiting")
 
756
            logger.critical(u"No clients left, exiting")
755
757
            sys.exit()
756
758
    
757
 
    clients.update(Set(Client(name=section,
 
759
    clients.update(Set(Client(name = section,
758
760
                              stop_hook = remove_from_clients,
759
 
                              **(dict(client_config\
760
 
                                      .items(section))))
 
761
                              config
 
762
                              = dict(client_config.items(section)))
761
763
                       for section in client_config.sections()))
762
764
    
763
765
    if not debug:
794
796
                                clients=clients)
795
797
    # Find out what port we got
796
798
    service.port = tcp_server.socket.getsockname()[1]
797
 
    logger.debug(u"Now listening on address %r, port %d, flowinfo %d,"
798
 
                 u" scope_id %d" % tcp_server.socket.getsockname())
 
799
    logger.info(u"Now listening on address %r, port %d, flowinfo %d,"
 
800
                u" scope_id %d" % tcp_server.socket.getsockname())
799
801
    
800
802
    #service.interface = tcp_server.socket.getsockname()[3]
801
803