Example usage for java.nio ByteBuffer array

List of usage examples for java.nio ByteBuffer array

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Introduction

In this page you can find the example usage for java.nio ByteBuffer array.

Prototype

public final byte[] array()

Source Link

Document

Returns the byte array which this buffer is based on, if there is one.

Usage

From source file:com.hengyi.japp.tools.UuidUtils.java

protected static String base64Uuid(UUID uuid) {
    ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
    bb.putLong(uuid.getMostSignificantBits());
    bb.putLong(uuid.getLeastSignificantBits());
    return Base64.encodeBase64URLSafeString(bb.array());
}

From source file:com.microsoft.applicationinsights.extensibility.initializer.SequencePropertyInitializer.java

private static String uuidToBase64() {
    Base64 base64 = new Base64();
    UUID uuid = UUID.randomUUID();
    ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
    bb.putLong(uuid.getMostSignificantBits());
    bb.putLong(uuid.getLeastSignificantBits());
    return base64.encodeBase64URLSafeString(bb.array());
}

From source file:Main.java

public static ByteBuffer copyBinary(final ByteBuffer orig) {
    if (orig == null) {
        return null;
    }//w  w w  . j a va  2s.com
    ByteBuffer copy = ByteBuffer.wrap(new byte[orig.remaining()]);
    if (orig.hasArray()) {
        System.arraycopy(orig.array(), orig.arrayOffset() + orig.position(), copy.array(), 0, orig.remaining());
    } else {
        orig.slice().get(copy.array());
    }

    return copy;
}

From source file:com.cloudera.branchreduce.impl.thrift.Writables.java

public static <T extends Writable> T fromByteBuffer(ByteBuffer bb, Class<T> clazz) {
    T instance = ReflectionUtils.newInstance(clazz, DUMMY);
    try {//from   w w  w  .  ja  va  2  s  . c o  m
        instance.readFields(
                new DataInputStream(new ByteArrayInputStream(bb.array(), bb.arrayOffset(), bb.limit())));
    } catch (IOException e) {
        LOG.error("Deserialization error for class: " + clazz, e);
    }
    return instance;
}

From source file:com.offbynull.portmapper.common.ByteBufferUtils.java

/**
 * Copy the remaining content of a {@link ByteBuffer} in to a new array.
 * @param src buffer to copy/*w w w. j  av a2s  . com*/
 * @param incrementSrc of {@code true} increments {@code src}'s position
 * @return new buffer with the remaining content in {@code src}
 * @throws NullPointerException if any arguments are {@code null}
 */
public static byte[] copyContentsToArray(ByteBuffer src, boolean incrementSrc) {
    Validate.notNull(src);
    if (!incrementSrc) {
        src.mark();
    }

    ByteBuffer dst = ByteBuffer.allocate(src.remaining());
    dst.put(src);

    if (!incrementSrc) {
        src.reset();
    }

    return dst.array();
}

From source file:Main.java

public static byte[] getDHdataWithHash(byte[] hash, byte[] data) {
    int ost = (data.length + 20) % 16 > 0 ? 16 : 0;
    int size = ((20 + data.length) / 16) * 16 + ost;

    ByteBuffer buffer = ByteBuffer.allocate(size);
    buffer.put(hash);//from ww  w .  j  a  va  2  s .c o m
    buffer.put(data);

    byte[] rand = new byte[size - hash.length - data.length];
    new Random().nextBytes(rand);
    buffer.put(rand);
    return buffer.array();
}

From source file:Main.java

/**
 * Stores substring in bb/*  w  w  w .  j  a va  2s .c o m*/
 * 
 * @param bb
 * @param startIdx
 * @return new bb limit
 */
public static final int substring(final ByteBuffer bb, final int startIdx) {
    final int limit = bb.limit();
    if (startIdx >= limit) {
        bb.limit(0);
        return 0;
    } else {
        final byte[] array = bb.array();
        int i = 0;
        int j = startIdx;
        while (j < limit) {
            array[i] = array[j];
            j++;
            i++;
        }
        bb.limit(limit - startIdx);
        return bb.limit();
    }
}

From source file:Main.java

public static String completeJweFromSIM(String jweSIM) {
    // android.os.Debug.waitForDebugger();

    try {/*  www.  j  av a2 s  .  com*/
        if (jweSIM != null && jweSIM.length() > 0) {
            String parts[] = jweSIM.split("\\.");
            ;
            if (parts != null && parts.length == 5) {
                // retrieve hmac key
                byte hmac_key[] = Base64.decode(parts[4], Base64.URL_SAFE);
                if (hmac_key != null && hmac_key.length == 16) {
                    // init hash instance
                    Mac hmac = Mac.getInstance("HmacSHA256", "SC");
                    hmac.init(new SecretKeySpec(hmac_key, "HmacSHA256"));

                    byte[] aad = parts[0].getBytes();
                    long al = aad.length * 8;
                    byte[] iv_key = decodeB64(parts[2]);
                    byte[] cryptedBytes = decodeB64(parts[3]);

                    // build data to hash
                    byte[] hmacData = new byte[aad.length + iv_key.length + cryptedBytes.length + 8];
                    int offset = 0;
                    System.arraycopy(aad, offset, hmacData, 0, aad.length);
                    offset += aad.length;
                    System.arraycopy(iv_key, 0, hmacData, offset, iv_key.length);
                    offset += iv_key.length;
                    System.arraycopy(cryptedBytes, 0, hmacData, offset, cryptedBytes.length);
                    offset += cryptedBytes.length;
                    ByteBuffer buffer = ByteBuffer.allocate(8);
                    buffer.putLong(al);
                    System.arraycopy(buffer.array(), 0, hmacData, offset, 8);

                    // compute hac value
                    byte[] hmacValue = hmac.doFinal(hmacData);
                    // authentication tag
                    byte[] auth_tag = Arrays.copyOf(hmacValue, 16);
                    String auth_tag64 = encodeB64(auth_tag);

                    // A.2.7. Complete Representation
                    String finalString = parts[0] + "." + parts[1] + "." + parts[2] + "." + parts[3] + "."
                            + auth_tag64;

                    //                  // just for verification
                    //                  byte jwt64 [] = decryptJWE(finalString, RsaKeyTim.privRsaKey);
                    //                  if(jwt64!=null) {
                    //                     String jws = new String(jwt64);
                    //                     Log.d("completeJweFromSIM", "jws verify Key TIM :"+verifyJWS(jws,RsaKeyTim.pubRsaKey));
                    //                  }

                    return finalString;
                }
            }
            // 
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

From source file:com.liveramp.commons.util.BytesUtils.java

public static byte[] deepCopyByteBufferToByteArray(ByteBuffer byteBuffer) {
    byte[] result = new byte[byteBuffer.remaining()];
    System.arraycopy(byteBuffer.array(), byteBuffer.arrayOffset() + byteBuffer.position(), result, 0,
            byteBuffer.remaining());//from   w  w w  . ja  v a 2s  .  com
    return result;
}

From source file:com.willetinc.hadoop.mapreduce.dynamodb.AttributeValueIOUtils.java

/**
 * <p>/*w ww  .j a  va2s.  c o  m*/
 * Creates a string representation of the specified AttributeValue.
 * </p>
 * 
 * <p>
 * Supported AttributeValue types are Number, String, and Binary. Throws an
 * IllegalArgumentException if any other types are specified.
 * </p>
 * 
 * @param type
 *            AttributeValue type
 * @param value
 *            value to serialize.
 * @return String representation of value.
 */
public static String toString(Types type, AttributeValue value) {
    if (null == value)
        return null;

    switch (type) {
    case STRING:
        return value.getS();
    case NUMBER:
        return value.getN();
    case BINARY:
        ByteBuffer buf = value.getB();
        return Base64.encodeBase64String(buf.array());

    default:
        throw new IllegalArgumentException("Only String, Number and Binary types are supported");
    }
}