com.intel.bluetooth.BluetoothStackWIDCOMMSDPInputStream Maven / Gradle / Ivy
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BlueCove is JSR-82 J2SE implementation that currently interfaces with the Mac OS X, WIDCOMM, BlueSoleil and Microsoft Bluetooth stack
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/**
* BlueCove - Java library for Bluetooth
* Copyright (C) 2006-2008 Vlad Skarzhevskyy
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
* @author vlads
* @version $Id: BluetoothStackWIDCOMMSDPInputStream.java 2476 2008-12-01 17:41:59Z skarzhevskyy $
*/
package com.intel.bluetooth;
import java.io.IOException;
import java.io.InputStream;
import javax.bluetooth.DataElement;
import javax.bluetooth.UUID;
/**
* Read WIDCOMM SDP_DISC_ATTTR_VAL C struct and convert to DataElements
*/
class BluetoothStackWIDCOMMSDPInputStream extends InputStream {
public static final boolean debug = false;
private InputStream source;
protected BluetoothStackWIDCOMMSDPInputStream(InputStream in) throws IOException {
this.source = in;
readVersionInfo();
}
public int read() throws IOException {
return source.read();
}
private long readLong(int size) throws IOException {
long result = 0;
for (int i = 0; i < size; i++) {
result += ((long) read()) << (8 * i);
}
return result;
}
private long readLongDebug(int size) throws IOException {
long result = 0;
for (int i = 0; i < size; i++) {
int data = read();
if (debug) {
DebugLog.debug("readLong data[" + i + "]", data);
}
result += ((long) data) << (8 * i);
}
return result;
}
private int readInt() throws IOException {
return (int) readLong(4);
}
private byte[] readBytes(int size) throws IOException {
byte[] result = new byte[size];
for (int i = 0; i < size; i++) {
result[i] = (byte) read();
}
return result;
}
static String hexString(byte[] b) {
StringBuffer buf = new StringBuffer();
for (int i = 0; i < b.length; i++) {
buf.append(Integer.toHexString(b[i] >> 4 & 0xf));
buf.append(Integer.toHexString(b[i] & 0xf));
}
return buf.toString();
}
static byte[] getUUIDHexBytes(UUID uuid) {
return Utils.UUIDToByteArray(uuid);
}
static final int ATTR_TYPE_INT = 0; // Attribute value is an integer
static final int ATTR_TYPE_TWO_COMP = 1; // Attribute value is an 2's
// complement integer
static final int ATTR_TYPE_UUID = 2; // Attribute value is a UUID
static final int ATTR_TYPE_BOOL = 3; // Attribute value is a boolean
static final int ATTR_TYPE_ARRAY = 4; // Attribute value is an array of
// bytes
static final int MAX_SEQ_ENTRIES = 20;
static final int MAX_ATTR_LEN_OLD = 256;
private int valueSize = 0;
private void readVersionInfo() throws IOException {
valueSize = readInt();
}
public DataElement readElement() throws IOException {
DataElement result = null;
DataElement mainSeq = null;
DataElement currentSeq = null;
int elements = readInt();
if (elements < 0 || elements > MAX_SEQ_ENTRIES) {
throw new IOException("Unexpected number of elements " + elements);
}
if (debug) {
DebugLog.debug("elements", elements);
}
for (int i = 0; i < elements; i++) {
if (debug) {
DebugLog.debug("element", i);
}
int type = readInt();
int length = readInt();
boolean start_of_seq = (readInt() != 0);
if (debug) {
DebugLog.debug("type", type);
DebugLog.debug("length", length);
DebugLog.debug("start_of_seq", start_of_seq);
}
if (length < 0 || valueSize < length) {
throw new IOException("Unexpected length " + length);
}
DataElement dataElement;
switch (type) {
case ATTR_TYPE_INT:
switch (length) {
case 1:
dataElement = new DataElement(DataElement.U_INT_1, readLong(1));
break;
case 2:
dataElement = new DataElement(DataElement.U_INT_2, readLong(2));
break;
case 4:
dataElement = new DataElement(DataElement.U_INT_4, readLong(4));
break;
case 8:
dataElement = new DataElement(DataElement.U_INT_8, readBytes(8));
break;
case 16:
dataElement = new DataElement(DataElement.U_INT_16, readBytes(16));
break;
default:
throw new IOException("Unknown U_INT length " + length);
}
break;
case ATTR_TYPE_TWO_COMP:
switch (length) {
case 1:
dataElement = new DataElement(DataElement.INT_1, (byte) readLong(1));
break;
case 2:
dataElement = new DataElement(DataElement.INT_2, (short) readLong(2));
break;
case 4:
dataElement = new DataElement(DataElement.INT_4, (int) readLong(4));
break;
case 8:
dataElement = new DataElement(DataElement.INT_8, readLongDebug(8));
break;
case 16:
dataElement = new DataElement(DataElement.INT_16, readBytes(16));
break;
default:
throw new IOException("Unknown INT length " + length);
}
break;
case ATTR_TYPE_UUID:
UUID uuid = null;
switch (length) {
case 2:
uuid = new UUID(readLong(2));
break;
case 4:
uuid = new UUID(readLong(4));
break;
case 16:
uuid = new UUID(hexString(readBytes(16)), false);
break;
default:
throw new IOException("Unknown UUID length " + length);
}
dataElement = new DataElement(DataElement.UUID, uuid);
break;
case ATTR_TYPE_BOOL:
dataElement = new DataElement(readLong(length) != 0);
break;
case ATTR_TYPE_ARRAY:
dataElement = new DataElement(DataElement.STRING, Utils.newStringUTF8(readBytes(length)));
break;
default:
throw new IOException("Unknown data type " + type);
}
if (debug) {
DebugLog.debug("dataElement " + dataElement);
}
if (start_of_seq) {
DataElement newSeq = new DataElement(DataElement.DATSEQ);
newSeq.addElement(dataElement);
dataElement = newSeq;
if (i != 0) {
// Second or other sequence
if (mainSeq != null) {
mainSeq.addElement(newSeq);
} else {
// move first sequence to new main sequence
mainSeq = new DataElement(DataElement.DATSEQ);
result = mainSeq;
mainSeq.addElement(currentSeq);
mainSeq.addElement(newSeq);
}
}
currentSeq = newSeq;
} else if (currentSeq != null) {
currentSeq.addElement(dataElement);
}
if (result == null) {
result = dataElement;
}
if ((i < (elements - 1)) && (skip(valueSize - length) != (valueSize - length))) {
throw new IOException("Unexpected end of data");
}
}
return result;
}
}
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