Examples with ServiceLocationException ch.ethz.iks.slp.ServiceLocationException used on opensource projects

Example 21 with ServiceLocationException

use of ch.ethz.iks.slp.ServiceLocationException in project ecf by eclipse.

the class SLPDaemonImpl method newDaDiscovered.

/**
 * get informed about a new discovered DA. Registers all services in the
 * scopes of the new DA.
 *
 * @param advert
 *            the DA advertisement.
 */
public void newDaDiscovered(final DAAdvertisement advert) {
    // so find all services within the scopes of the new DA:
    for (Iterator iter = advert.scopeList.iterator(); iter.hasNext(); ) {
        String scope = (String) iter.next();
        List services = (List) registeredServices.get(scope.toLowerCase());
        if (services != null) {
            for (Iterator serviceIter = services.iterator(); serviceIter.hasNext(); ) {
                // and try to register it with the new DA
                try {
                    Service service = (Service) serviceIter.next();
                    ServiceRegistration reg = new ServiceRegistration(service.url, service.url.getServiceType(), Arrays.asList(new Object[] { scope }), SLPUtils.dictToAttrList(service.attributes), SLPCore.DEFAULT_LOCALE);
                    SLPCore.platform.logDebug("Registering " + service.url + " with new DA " + advert.url);
                    announceService(advert.url, reg);
                } catch (ServiceLocationException e) {
                    SLPCore.platform.logError(e.getMessage(), e.fillInStackTrace());
                }
            }
        }
    }
}

Example 22 with ServiceLocationException

use of ch.ethz.iks.slp.ServiceLocationException in project ecf by eclipse.

the class SLPDaemonImpl method deregisterService.

/**
 * deregister a service from the SLP framework. Deregisters from all DAs
 * within the scopes and from the local service cache.
 *
 * @param dereg
 *            the service deregistration.
 * @throws ServiceLocationException
 */
private void deregisterService(final ServiceDeregistration dereg) throws ServiceLocationException {
    final String[] scopes = (String[]) registeredServices.keySet().toArray(new String[registeredServices.size()]);
    for (int i = 0; i < scopes.length; i++) {
        final List tmp = (List) registeredServices.get(scopes[i]);
        final Service[] services = (Service[]) tmp.toArray(new Service[tmp.size()]);
        for (int j = 0; j < services.length; j++) {
            if (dereg.url.matches(services[j].url)) {
                List daList = (List) SLPCore.dAs.get(scopes[i].toLowerCase());
                if (daList != null) {
                    for (Iterator daIter = daList.iterator(); daIter.hasNext(); ) {
                        try {
                            String dA = (String) daIter.next();
                            dereg.address = InetAddress.getByName(dA);
                            dereg.port = SLPCore.SLP_RESERVED_PORT;
                            dereg.xid = SLPCore.nextXid();
                            if (SLPCore.CONFIG.getSecurityEnabled()) {
                                List spiList = (List) SLPCore.dASPIs.get(dA);
                                dereg.sign(spiList);
                            }
                            ReplyMessage reply = SLPCore.sendMessage(dereg, true);
                            if (reply.errorCode != 0) {
                                throw new ServiceLocationException((short) reply.errorCode, "Error during deregistration: " + reply.errorCode);
                            }
                        } catch (UnknownHostException uhe) {
                            throw new ServiceLocationException(ServiceLocationException.NETWORK_ERROR, uhe.getMessage());
                        }
                    }
                }
                synchronized (registeredServices) {
                    SLPUtils.removeValue(registeredServices, scopes[i], services[j]);
                }
                break;
            }
        }
    }
}

Example 23 with ServiceLocationException

use of ch.ethz.iks.slp.ServiceLocationException in project ecf by eclipse.

the class SLPDaemonImpl method handleMessage.

/**
 * all incoming messages are handled here.
 *
 * @param msg
 *            the message to be processed.
 * @return the reply if the handled message came in via TCP. Otherwise null
 *         will be returned.
 * @throws ServiceLocationException
 *             for various reasons like authentication failures etc.
 */
public ReplyMessage handleMessage(final SLPMessage msg) throws ServiceLocationException {
    if (msg == null) {
        return null;
    }
    String via = msg.tcp ? " (tcp)" : " (udp)";
    SLPCore.platform.logTraceMessage("RECEIVED (" + msg.address + ":" + msg.port + ") " + msg.toString() + via);
    ReplyMessage reply = null;
    switch(msg.funcID) {
        case SLPMessage.SRVRQST:
            ServiceRequest req = (ServiceRequest) msg;
            List results = new ArrayList();
            for (Iterator scopes = req.scopeList.iterator(); scopes.hasNext(); ) {
                String scope = (String) scopes.next();
                List services = (List) registeredServices.get(scope.toLowerCase());
                if (services == null) {
                    continue;
                }
                for (Iterator srvs = services.iterator(); srvs.hasNext(); ) {
                    Service service = (Service) srvs.next();
                    if (service.url.getServiceType().matches(req.serviceType)) {
                        if (req.predicate == null) {
                            results.add(service.url);
                            continue;
                        }
                        if (req.predicate.match(service.attributes)) {
                            results.add(service.url);
                        }
                    }
                }
            }
            /*
			 * if there is no result, don't send a reply. This causes the SA to
			 * get the same message at least two more times but the RFC strictly
			 * demands this for multicast requests
			 */
            if (results.size() == 0 && req.multicast) {
                return null;
            }
            reply = new ServiceReply(req, results);
            if (SLPCore.CONFIG.getSecurityEnabled()) {
                ((ServiceReply) reply).sign(req.spi);
            }
            return reply;
        case SLPMessage.ATTRRQST:
            AttributeRequest attreq = (AttributeRequest) msg;
            List attResult = new ArrayList();
            for (Iterator scopes = attreq.scopeList.iterator(); scopes.hasNext(); ) {
                String scope = (String) scopes.next();
                List services = (List) registeredServices.get(scope.toLowerCase());
                if (services == null) {
                    continue;
                }
                // the request can either be for a ServiceURL or a ServiceType
                Object reqService;
                boolean fullurl = false;
                if (attreq.url.indexOf("//") == -1) {
                    reqService = new ServiceType(attreq.url);
                } else {
                    fullurl = true;
                    reqService = new ServiceURL(attreq.url, 0);
                }
                // the tag list has to be empty
                if (attreq.spi.equals("") || (fullurl && attreq.tagList.isEmpty())) {
                    for (Iterator srvs = services.iterator(); srvs.hasNext(); ) {
                        Service service = (Service) srvs.next();
                        if (service.url.matches(reqService)) {
                            attResult.addAll(SLPUtils.findMatches(attreq.tagList, service.attributes));
                        }
                    }
                }
            }
            reply = new AttributeReply(attreq, attResult);
            if (SLPCore.CONFIG.getSecurityEnabled()) {
                ((AttributeReply) reply).sign(attreq.spi);
            }
            return reply;
        case SLPMessage.SRVTYPERQST:
            ServiceTypeRequest streq = (ServiceTypeRequest) msg;
            ArrayList result = new ArrayList();
            // iterate over scopes
            for (Iterator scopeIter = streq.scopeList.iterator(); scopeIter.hasNext(); ) {
                // iterate over the registered services
                String scope = (String) scopeIter.next();
                List services = ((List) registeredServices.get(scope.toLowerCase()));
                if (services == null) {
                    continue;
                }
                for (Iterator iter = services.iterator(); iter.hasNext(); ) {
                    Service service = (Service) iter.next();
                    ServiceType type = service.url.getServiceType();
                    if (streq.namingAuthority.equals("*") || streq.namingAuthority.equals("") || type.getNamingAuthority().equals(streq.namingAuthority)) {
                        if (!result.contains(type)) {
                            result.add(type);
                        }
                    }
                }
            }
            reply = new ServiceTypeReply(streq, result);
            return reply;
        case SLPMessage.SRVREG:
            registerService((ServiceRegistration) msg);
            reply = new ServiceAcknowledgement(msg, 0);
            return reply;
        case SLPMessage.SRVDEREG:
            deregisterService((ServiceDeregistration) msg);
            reply = new ServiceAcknowledgement(msg, 0);
            return reply;
        case SLPMessage.SRVACK:
            final ReplyMessage rep = (ReplyMessage) msg;
            if (rep.errorCode != 0) {
                SLPCore.platform.logWarning(msg.address + " replied with error code " + rep.errorCode + " (" + rep + ")");
            }
            return null;
        default:
            // exception during parsing
            throw new ServiceLocationException(ServiceLocationException.NOT_IMPLEMENTED, "The message type " + SLPMessage.getType(msg.funcID) + " is not implemented");
    }
}

Example 24 with ServiceLocationException

use of ch.ethz.iks.slp.ServiceLocationException in project ecf by eclipse.

the class SLPMessage method parse.

/**
 * The RFC 2608 SLP message header:
 *
 * <pre>
 *                   0                   1                   2                   3
 *                   0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
 *                  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *                  |    Version    |  Function-ID  |            Length             |
 *                  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *                  | Length, contd.|O|F|R|       reserved          |Next Ext Offset|
 *                  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *                  |  Next Extension Offset, contd.|              XID              |
 *                  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *                  |      Language Tag Length      |         Language Tag          \
 *                  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 * </pre>
 *
 * This method parses the header and then delegates the creation of the
 * corresponding SLPMessage to the subclass that matches the funcID.
 *
 * @param senderAddr
 *            the address of the message sender.
 * @param senderPort
 *            the port of the message sender.
 * @param data
 *            the raw bytes of the message
 * @param len
 *            the length of the byte array.
 * @param tcp
 *            true if the message was received via TCP, false otherwise.
 * @return a SLPMessage of the matching subtype.
 * @throws ServiceLocationException
 *             in case of any parsing errors.
 */
static SLPMessage parse(final InetAddress senderAddr, final int senderPort, final DataInputStream in, final boolean tcp) throws ServiceLocationException, ProtocolException {
    try {
        // version
        final int version = in.readByte();
        if (version != VERSION) {
            // funcID
            in.readByte();
            final int length = in.readShort();
            byte[] drop = new byte[length - 4];
            in.readFully(drop);
            SLPCore.platform.logWarning("Dropped SLPv" + version + " message from " + senderAddr + ":" + senderPort);
        }
        // funcID
        final byte funcID = in.readByte();
        final int length = readInt(in, 3);
        // slpFlags
        final byte flags = (byte) (in.readShort() >> 8);
        if (!tcp && (flags & 0x80) != 0) {
            throw new ProtocolException();
        }
        // we don't process extensions, we simply ignore them
        // extOffset
        readInt(in, 3);
        // XID
        final short xid = in.readShort();
        // Locale
        final Locale locale = new Locale(in.readUTF(), "");
        final SLPMessage msg;
        // decide on the type of the message
        switch(funcID) {
            case DAADVERT:
                msg = new DAAdvertisement(in);
                break;
            case SRVRQST:
                msg = new ServiceRequest(in);
                break;
            case SRVRPLY:
                msg = new ServiceReply(in);
                break;
            case ATTRRQST:
                msg = new AttributeRequest(in);
                break;
            case ATTRRPLY:
                msg = new AttributeReply(in);
                break;
            case SRVREG:
                msg = new ServiceRegistration(in);
                break;
            case SRVDEREG:
                msg = new ServiceDeregistration(in);
                break;
            case SRVACK:
                msg = new ServiceAcknowledgement(in);
                break;
            case SRVTYPERQST:
                msg = new ServiceTypeRequest(in);
                break;
            case SRVTYPERPLY:
                msg = new ServiceTypeReply(in);
                break;
            default:
                throw new ServiceLocationException(ServiceLocationException.PARSE_ERROR, "Message type " + getType(funcID) + " not supported");
        }
        // set the fields
        msg.address = senderAddr;
        msg.port = senderPort;
        msg.tcp = tcp;
        msg.multicast = ((flags & 0x2000) >> 13) == 1 ? true : false;
        msg.xid = xid;
        msg.funcID = funcID;
        msg.locale = locale;
        if (msg.getSize() != length) {
            SLPCore.platform.logError("Length of " + msg + " should be " + length + ", read " + msg.getSize());
        // throw new ServiceLocationException(
        // ServiceLocationException.INTERNAL_SYSTEM_ERROR,
        // "Length of " + msg + " should be " + length + ", read "
        // + msg.getSize());
        }
        return msg;
    } catch (ProtocolException pe) {
        throw pe;
    } catch (IOException ioe) {
        SLPCore.platform.logError("Network Error", ioe);
        throw new ServiceLocationException(ServiceLocationException.NETWORK_ERROR, ioe.getMessage());
    }
}

Example 25 with ServiceLocationException

use of ch.ethz.iks.slp.ServiceLocationException in project ecf by eclipse.

the class SLPMessage method readInt.

/**
 * parse a numerical value that can be spanned over multiple bytes.
 *
 * @param input
 *            the data input stream.
 * @param len
 *            the number of bytes to read.
 * @return the int value.
 * @throws ServiceLocationException
 *             in case of IO errors.
 */
private static int readInt(final DataInputStream input, final int len) throws ServiceLocationException {
    try {
        int value = 0;
        for (int i = 0; i < len; i++) {
            value <<= 8;
            value += input.readByte() & 0xff;
        }
        return value;
    } catch (IOException ioe) {
        throw new ServiceLocationException(ServiceLocationException.PARSE_ERROR, ioe.getMessage());
    }
}