Java Code Examples for javax.bluetooth.DataElement

public static synchronized byte[] serialize(ServiceRecord record) {
    DataElement seq = new DataElement(DataElement.DATSEQ);
    int[] attrIDs = record.getAttributeIDs();
    for (int i = 0; i < attrIDs.length; i++) {
        DataElement attrID = new DataElement(DataElement.U_INT_2,
                attrIDs[i]);
        DataElement attrValue = record.getAttributeValue(attrIDs[i]);
        if (attrValue != null) {
            seq.addElement(attrID);
            seq.addElement(attrValue);
        }
    }
    try {
        return des.serialize(seq);
    } catch (IOException e) {
        return null;
    }
}
 

public synchronized ServiceRecordImpl copy() {
    int count = attributesTable.size();
    int[] attrIDs = new int[count];
    DataElement[] attrValues = new DataElement[count];

    Enumeration ids = attributesTable.keys();
    Enumeration values = attributesTable.elements();

    for (int i = 0; i < count; i++) {
        attrIDs[i] = ((Integer)ids.nextElement()).intValue();
        // no nedd to copy elements here; service record constructor
        // performs the copying
        attrValues[i] = (DataElement)values.nextElement();
    }

    ServiceRecordImpl servRec = new ServiceRecordImpl(notifier,
                  attrIDs, attrValues);
    servRec.serviceClasses = serviceClasses;
    return servRec;
}
 

public synchronized boolean setAttributeValue(
        int attrID, DataElement attrValue) {

    if ((attrID & MASK_OVERFLOW) != 0) {
        throw new IllegalArgumentException(
                "attrID does not represent a 16-bit unsigned integer");
    }

    if (attrID == SERVICE_RECORD_HANDLE) {
        throw new IllegalArgumentException(
                "attrID is the value of ServiceRecordHandle (0x0000)");
    }

    if (remoteDevice != null) {
        throw new RuntimeException(
                "can't update ServiceRecord of the RemoteDevice");
    }
    Object key = new Integer(attrID);

    if (attrValue == null) {
        return attributesTable.remove(key) != null;
    } else {
        attributesTable.put(key, dataElementCopy(attrValue));
        return true;
    }
}
 

public ClientServiceSearchAttributeTransaction(JavaSDPClient client, int transactionID,
        SDPResponseListener listener, int[] attrSet,
        UUID[] uuidSet) {
    super(client, SDPClientTransaction.SDP_SERVICE_SEARCH_ATTRIBUTE_REQUEST, transactionID,
            listener);
    attrData = new DataElement(DataElement.DATSEQ);
    uuidData = new DataElement(DataElement.DATSEQ);
    for (int i = 0; i < attrSet.length; i++) {
        attrData.addElement(new DataElement(DataElement.U_INT_2,
                attrSet[i]));
    }
    for (int i = 0; i < uuidSet.length; i++) {
        uuidData.addElement(new DataElement(DataElement.UUID,
                uuidSet[i]));
    }
    parameterLength = super.client.getConnection().getReaderWriter().getDataSize(attrData) +
            super.client.getConnection().getReaderWriter().getDataSize(uuidData) + 2;
}
 

public void servicesDiscovered( int transID, ServiceRecord[] serviceRecords ) {
	DataElement e;
	ServiceRecord r;
	Enumeration< DataElement > en;
	boolean keepRun = true;
	for( int i = 0; i < serviceRecords.length && keepRun; i++ ) {
		r = serviceRecords[ i ];
		// Search for the desired UUID
		if( (e = r.getAttributeValue( 0x0001 )) != null ) {
			if( e.getDataType() == DataElement.DATSEQ ) {
				en = (Enumeration< DataElement >) e.getValue();
				Object o;
				while( en.hasMoreElements() ) {
					o = en.nextElement().getValue();
					if( o instanceof UUID ) {
						if( o.equals( uuid ) ) {
							serviceRecord = r;
							keepRun = false;
						}
					}
				}
			} else if( e.getDataType() == DataElement.UUID ) {
				if( e.getValue().equals( uuid ) ) {
					serviceRecord = r;
					keepRun = false;
				}
			}
		}
	}
}
 

/**
 * Find service for a device that is named: OBEX Object Push
 * @param serviceRecords
 * @return the service record
 */
private ServiceRecord findService(ServiceRecord[] serviceRecords) {
	ServiceRecord retvalue = null;
	if(serviceRecords.length == 1) {
		retvalue = serviceRecords[0];
	} else {
		for (int i = 0; i < serviceRecords.length; i++) {
            DataElement serviceName = serviceRecords[i].getAttributeValue(0x0100);
            if (serviceName != null && serviceName.getValue().equals("DevB")) {
            	retvalue = serviceRecords[i];
            }
		}
	}
	return retvalue;
}
 

public void serviceAttributeResponse(int[] attrIDs,
        DataElement[] attributeValues, int transactionID) {
    if (DEBUG) {
        System.out.println(cn +
                ".serviceAttributeResponse: unexpected call");
    }
    throw new RuntimeException("unexpected call");
}
 

public void serviceSearchAttributeResponse(int[] attrIDs,
        DataElement[] attributeValues, int transactionID) {
    if (DEBUG) {
        System.out.println(cn + ".serviceSearchAttributeResponse: called");
    }
    synchronized (this) {
        attrSet = attrIDs;
        attrValues = attributeValues;
        notify();
    }
}
 

public void setHandle(int handle) {
    Integer attrID = new Integer(SERVICE_RECORD_HANDLE);
    attributesTable.remove(attrID);
    attributesTable.put(attrID, new DataElement(
            DataElement.U_INT_4, handle));
    recHandle = handle;
}
 

private DataElement dataElementCopy(DataElement original) {
    if ((original.getDataType() == DataElement.DATSEQ)
            || (original.getDataType() == DataElement.DATALT)) {
        DataElement copy = new DataElement(original.getDataType());
        Enumeration elements = (Enumeration) original.getValue();

        while (elements.hasMoreElements()) {
            copy.addElement(dataElementCopy((DataElement)
                    elements.nextElement()));
        }
        return copy;
    } else {
        return original;
    }
}
 

public DataElement getAttributeValue(int attrID) {
    if ((attrID & MASK_OVERFLOW) != 0) {
        throw new IllegalArgumentException(
                "attrID isn't a 16-bit unsigned integer");
    }
    DataElement attrValue = (DataElement) attributesTable.get(new
            Integer(attrID));

    if (attrValue == null) {
        return null;
    } else {
        return dataElementCopy(attrValue);
    }
}
 

private void retrieveUrlCommonParams() {
    if (protocol != BluetoothUrl.UNKNOWN) {
        // already retrieved
        return;
    }

    if (remoteDevice != null) {
        btaddr = remoteDevice.getBluetoothAddress();
    } else {
        try {
            btaddr = LocalDevice.getLocalDevice().getBluetoothAddress();
        } catch (BluetoothStateException bse) {
            throw new IllegalArgumentException("cannot generate url");
        }
    }

    /*
     * There are three protocols supported -
     * they are obex or rfcomm or l2cap. So, if obex is
     * found in ProtocolDescriptorList, the protocol is btgoep,
     * if RFCOMM is found (and no obex) - the btspp, otherwise
     * the protocol is btl2cap.
     */
    DataElement protocolList = getAttributeValue(PROTOCOL_DESCRIPTOR_LIST);
    if (protocolList == null) {
    	return;
    }
    Enumeration val = (Enumeration) protocolList.getValue();
    int type = -1; // 0 = l2cap, 1 = spp, 2 = obex
    final UUID L2CAP_UUID = new UUID(0x0100);
    final UUID RFCOMM_UUID = new UUID(0x0003);
    final UUID OBEX_UUID = new UUID(0x0008);

    // go through all of the protocols in the protocols list
    while (val.hasMoreElements()) {
        DataElement protoDE = (DataElement) val.nextElement();

        // application adds a garbage in protocolList - ignore
        if (protoDE.getDataType() != DataElement.DATSEQ) {
            continue;
        }
        Enumeration protoEnum = (Enumeration) protoDE.getValue();
        int tmpPort = -1;
        int tmpType = -1;

        // look on protocol details
        while (protoEnum.hasMoreElements()) {
            DataElement de = (DataElement) protoEnum.nextElement();

            // may be PSM or channel id
            if (de.getDataType() == DataElement.U_INT_1 ||
                    de.getDataType() == DataElement.U_INT_2)  {
                tmpPort = (int) de.getLong();
            } else if (de.getDataType() == DataElement.UUID) {
                UUID protoUUID = (UUID) de.getValue();

                if (protoUUID.equals(L2CAP_UUID)) {
                    tmpType = 0;
                } else if (protoUUID.equals(RFCOMM_UUID)) {
                    tmpType = 1;
                } else if (protoUUID.equals(OBEX_UUID)) {
                    tmpType = 2;
                }
            }
        }

        /*
         * ok, new protocol has been parsed - let's check if it
         * is over the previous one or not.
         *
         * Note, that OBEX protocol may appear before the RFCOMM
         * one - in this case the port (channel id) is not set -
         * need to check this case separately.
         */
        if (tmpType > type) {
            type = tmpType;

            // no "port" for obex type (obex = 2)
            if (tmpType != 2) {
                port = tmpPort;
            }
        } else if (tmpType == 1) {
            port = tmpPort;
        }
    }

    switch (type) {
    case 0:
        protocol = BluetoothUrl.L2CAP;
        break;
    case 1:
        protocol = BluetoothUrl.RFCOMM;
        break;
    case 2:
        protocol = BluetoothUrl.OBEX;
        break;
    default:
        throw new IllegalArgumentException("wrong protocol list");
    }
}
 

public void serviceAttributeResponse(int[] attributeIDs,
    DataElement[] attributeValues, int transactionID) {
    synchronized (this) {
        attrIDs = attributeIDs;
        attrValues = attributeValues;
        notify();
    }
}
 

public ClientServiceSearchTransaction(JavaSDPClient client, int transactionID,
        SDPResponseListener listener, UUID[] uuidSet) {
    super(client, SDPClientTransaction.SDP_SERVICE_SEARCH_REQUEST, transactionID, listener);
    serviceSearchPattern = new DataElement(DataElement.DATSEQ);
    for (int i = 0; i < uuidSet.length; i++) {
        serviceSearchPattern.addElement(new DataElement(
                DataElement.UUID, uuidSet[i]));
    }
    parameterLength = super.des.getDataSize(serviceSearchPattern) + 2;
}
 

public synchronized byte[] serialize(DataElement data) throws IOException {
    writeBuffer = new byte[(int)getDataSize(data)];
    writePos = 0;
    writeDataElement(data);
    byte[] result = writeBuffer;
    writeBuffer = null;
    return result;
}
 

public synchronized DataElement restore(byte[] data) throws IOException {
    readBuffer = data;
    readPos = 0;
    DataElement result = readDataElement();
    readBuffer = null;
    return result;
}
 

public long getDataSize(DataElement data) {
    int type = data.getDataType();
    long size = getPureDataSize(data);
    if ((type == DataElement.NULL) || (type == DataElement.BOOL)
            || (type == DataElement.INT_1) || (type == DataElement.U_INT_1)
            || (type == DataElement.INT_2) || (type == DataElement.U_INT_2)
            || (type == DataElement.INT_4) || (type == DataElement.U_INT_4)
            || (type == DataElement.INT_8) || (type == DataElement.U_INT_8)
            || (type == DataElement.INT_16)
            || (type == DataElement.U_INT_16)
            || (type == DataElement.UUID)) {
        return size + 1;
    } else if ((type == DataElement.DATSEQ)
            || (type == DataElement.DATALT) || (type == DataElement.STRING)
            || (type == DataElement.URL)) {
        if (size <= 0xffL) {
            return size + 2;
        } else if (size <= 0xffffL) {
            return size + 3;
        } else if (size <= 0xffffffffL) {
            return size + 5;
        } else {
            throw new RuntimeException("Data size is too large.");
        }
    } else {
        throw new RuntimeException("Unexpected data type.");
    }
}
 

public long getPureDataSize(DataElement data) {
    switch (data.getDataType()) {
        case DataElement.NULL:
            return 0;
        case DataElement.BOOL:
        case DataElement.INT_1:
        case DataElement.U_INT_1:
            return 1;
        case DataElement.INT_2:
        case DataElement.U_INT_2:
            return 2;
        case DataElement.INT_4:
        case DataElement.U_INT_4:
            return 4;
        case DataElement.INT_8:
        case DataElement.U_INT_8:
            return 8;
        case DataElement.INT_16:
        case DataElement.U_INT_16:
            return 16;
        case DataElement.DATSEQ:
        case DataElement.DATALT:
            long size = 0;
            Enumeration elements = (Enumeration)data.getValue();
            while (elements.hasMoreElements()) {
                size += getDataSize((DataElement)elements.nextElement());
            }
            return size;
        case DataElement.STRING:
        case DataElement.URL:
            return ((String)data.getValue()).length();
        case DataElement.UUID:
            return 16;
        default:
            throw new RuntimeException("Unknown data type.");
    }
}
 

ClientServiceAttributeTransaction(JavaSDPClient client, int transactionID,
        SDPResponseListener listener, int recordHandle,
        int[] attrSet) {
    super(client, SDPClientTransaction.SDP_SERVICE_ATTRIBUTE_REQUEST, transactionID, listener);
    serviceRecordHandle = recordHandle;
    attributeIDList = new DataElement(DataElement.DATSEQ);
    for (int i = 0; i < attrSet.length; i++) {
        attributeIDList.addElement(new DataElement(
                DataElement.U_INT_2, attrSet[i]));
    }
    parameterLength = super.client.getConnection().getReaderWriter().getDataSize(attributeIDList) + 6;
}
 

public void complete() {
    DataElement attrList;
    DataElementSerializer des = new DataElementSerializer();
    try {
        attrList = des.restore(attributes);
    } catch (IOException e) {
        listener.serviceAttributeResponse(null, null,
                ssTransID);
        return;
    }
    int size = attrList.getSize() / 2;
    if (size == 0) {
        listener.serviceAttributeResponse(null, null,
                ssTransID);
        return;
    }
    Enumeration elements = (Enumeration)attrList.getValue();
    final int[] attrIDs = new int[size];
    final DataElement[] attrValues = new DataElement[size];
    for (int i = 0; elements.hasMoreElements(); i++) {
        attrIDs[i] = (int)((DataElement)
                elements.nextElement()).getLong();
        attrValues[i] = ((DataElement)
                elements.nextElement());
    }
    listener.serviceAttributeResponse(attrIDs, attrValues, ssTransID);
}
 

private ServiceRecordImpl getOneRecord(int[] attrIDs,
        DataElement[] attributeValues, int firstPos, int curPos) {

    int aLength = curPos - firstPos;
    int[] aIDs = new int[aLength];
    DataElement[] aValues = new DataElement[aLength];
    System.arraycopy(attrIDs, firstPos, aIDs, 0, aLength);
    System.arraycopy(attributeValues, firstPos, aValues, 0, aLength);
    ServiceRecordImpl record = 
                      new ServiceRecordImpl(btDev, aIDs, aValues);
    return record;
}
 

abstract public void serviceAttributeResponse(int[] attrIDs,
DataElement[] attributeValues, int transactionID);
 

abstract public void serviceSearchAttributeResponse(int[] attrIDs,
DataElement[] attributeValues, int transactionID);
 

public ServiceRecordImpl(RemoteDevice device, int[] attrIDs,
        DataElement[] attrValues) {
    init(attrIDs, attrValues);
    remoteDevice = device;
}
 

public ServiceRecordImpl(BluetoothNotifier notifier, int[] attrIDs,
        DataElement[] attrValues) {
    init(attrIDs, attrValues);
    this.notifier = notifier;
}
 

public int getHandle() {
    DataElement handle = getAttributeValue(SERVICE_RECORD_HANDLE);
    return handle != null ? (int)handle.getLong() : 0;
}
 

private void init(int[] attrIDs, DataElement[] attrValues) {
    attributesTable = new Hashtable(attrIDs.length + 1);
    attrsInit(attrIDs, attrValues);
}
 

private void attrsInit(int[] attrIDs, DataElement[] attrValues) {
    for (int i = 0; i < attrIDs.length; i++) {
        attributesTable.put(new Integer(attrIDs[i]),
                dataElementCopy(attrValues[i]));
    }
}
 

public synchronized boolean populateRecord(int[] attrIDs)
    throws IOException {
    Hashtable dupChecker = new Hashtable();
    Object checkObj = new Object();

    if (remoteDevice == null) {
        throw new RuntimeException("local ServiceRecord");
    }

    if (attrIDs.length == 0) {
        throw new IllegalArgumentException("attrIDs size is zero");
    }

    if (attrIDs.length > RETRIEVABLE_MAX) {
        throw new IllegalArgumentException(
                "attrIDs size exceeds retrievable.max");
    }

    for (int i = 0; i < attrIDs.length; i++) {
        if ((attrIDs[i] & MASK_OVERFLOW) != 0) {
            throw new IllegalArgumentException("attrID does not represent "
                + "a 16-bit unsigned integer");
        }

        // check attribute ID duplication
        if (dupChecker.put(new Integer(attrIDs[i]), checkObj) != null) {
            throw new IllegalArgumentException(
                    "duplicated attribute ID");
        }
    }

    // obtains transaction ID for request
    short transactionID = SDPClientTransactionBase.newTransactionID();

    // SDP connection and listener. They are initialized in try blok.
    SDPClient sdp = null;
    SRSDPListener listener = null;

    try {
        // prepare data for request
        DataElement handleEl = (DataElement) attributesTable.get(
                new Integer(SERVICE_RECORD_HANDLE));
        int handle = (int) handleEl.getLong();

        // create and prepare SDP listner
        listener = new SRSDPListener();

        // create SDP connection and ..
        if (sdpClient == null) {
            sdp = ServiceDiscovererFactory.getServiceDiscoverer().
                    getSDPClient(remoteDevice.getBluetoothAddress());
        } else {
            sdp = sdpClient;
        }

        // ... and make request
        sdp.serviceAttributeRequest(handle, attrIDs, transactionID,
                listener);

        synchronized (listener) {
            if ((listener.ioExcpt == null)
                    && (listener.attrValues == null)) {
                try {
                    listener.wait();
                } catch (InterruptedException ie) {
                    // ignore (breake waiting)
                }
            }
        }
    } finally {

        // Closes SDP connection and frees transaction ID in any case
        SDPClientTransactionBase.freeTransactionID(transactionID);

        // if connection was created try to close it
        if (sdp != null) {
            try {
                sdp.close();
            } catch (IOException ioe) {
                // ignore
            }
        }
    }

    if (listener.ioExcpt != null) {
        throw listener.ioExcpt;
    } else if (listener.attrValues == null) {
        return false;
    } else if (listener.attrValues.length == 0) {
        return false;
    } else {
        attrsInit(listener.attrIDs, listener.attrValues);
        return true;
    }
}
 

public void serviceSearchAttributeResponse(int[] attrIDs,
    DataElement[] attributeValues, int transactionID) {
    throw new RuntimeException("unexpected call");
}