Example usage for java.io DataInputStream readFully

Introduction

In this page you can find the example usage for java.io DataInputStream readFully.

Prototype

public final void readFully(byte b[]) throws IOException 

Source Link

Document

See the general contract of the readFully method of DataInput .

Usage

From source file:org.mule.transport.tcp.protocols.LengthProtocol.java

public Object read(InputStream is) throws IOException {
    // original comments indicated that we need to use read(byte[]) rather than readInt()
    // to avoid socket timeouts - don't understand, but don't want to risk change.

    // first read the data necessary to know the length of the payload
    DataInputStream dis = new DataInputStream(is);
    dis.mark(SIZE_INT);/* w  w  w.j ava  2s .c o m*/
    // this pulls through SIZE_INT bytes
    if (null == super.read(dis, SIZE_INT)) {
        return null; // eof
    }

    // reset and read the integer
    dis.reset();
    int length = dis.readInt();
    if (logger.isDebugEnabled()) {
        logger.debug("length: " + length);
    }

    if (length < 0 || (getMaxMessageLength() > 0 && length > getMaxMessageLength())) {
        throw new IOException("Length " + length + " exceeds limit: " + getMaxMessageLength());
    }

    // finally read the rest of the data
    byte[] buffer = new byte[length];
    dis.readFully(buffer);
    if (logger.isDebugEnabled()) {
        logger.debug("length read: " + buffer.length);
    }

    return buffer;
}

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From source file:com.limegroup.gnutella.metadata.ASFParser.java

/** Parses stream properties to see if we have audio or video data. */
private void parseStreamProperties(DataInputStream ds) throws IOException {
    LOG.debug("Parsing stream properties");
    byte[] streamID = new byte[16];
    ds.readFully(streamID);

    if (Arrays.equals(streamID, IDs.AUDIO_STREAM_ID)) {
        _hasAudio = true;//from   w  ww. j  a va2s .  c  om
    } else if (Arrays.equals(streamID, IDs.VIDEO_STREAM_ID)) {
        _hasVideo = true;
        IOUtils.ensureSkip(ds, 38);
        _width = ByteUtils.leb2int(ds);
        if (_width < 0)
            throw new IOException("ASF file corrupt.  Video width excessive:" + ByteUtils.uint2long(_width));
        _height = ByteUtils.leb2int(ds);
        if (_height < 0)
            throw new IOException("ASF file corrupt.  Video height excessive:" + ByteUtils.uint2long(_height));
    }

    // we aren't reading everything, but we'll skip over just fine.
}

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From source file:com.limegroup.gnutella.metadata.ASFParser.java

/**
 * Parses a ASF input stream's metadata.
 * This first checks that the marker (16 bytes) is correct, reads the data offset & object count,
 * and then iterates through the objects, reading them.
 * Each object is stored in the format:/*from   ww  w  .j av a 2 s. c  o m*/
 * <xmp>
 *   ObjectID (16 bytes)
 *   Object Size (4 bytes)
 *   Object (Object Size bytes)
 * </xmp>
 */
private void parse(InputStream is) throws IOException {
    CountingInputStream counter = new CountingInputStream(is);
    DataInputStream ds = new DataInputStream(counter);

    byte[] marker = new byte[IDs.HEADER_ID.length];
    ds.readFully(marker);
    if (!Arrays.equals(marker, IDs.HEADER_ID))
        throw new IOException("not an ASF file");

    long dataOffset = ByteUtils.leb2long(ds);
    int objectCount = ByteUtils.leb2int(ds);
    IOUtils.ensureSkip(ds, 2);

    if (LOG.isDebugEnabled())
        LOG.debug("Data Offset: " + dataOffset + ", objectCount: " + objectCount);

    if (dataOffset < 0)
        throw new IOException("ASF file is corrupt. Data offset negative:" + dataOffset);
    if (objectCount < 0)
        throw new IOException(
                "ASF file is corrupt. Object count unreasonable:" + ByteUtils.uint2long(objectCount));
    if (objectCount > 100)
        throw new IOException("object count very high: " + objectCount);

    byte[] object = new byte[16];
    for (int i = 0; i < objectCount; i++) {
        if (LOG.isDebugEnabled())
            LOG.debug("Parsing object[" + i + "]");

        ds.readFully(object);
        long size = ByteUtils.leb2long(ds) - 24;
        if (size < 0)
            throw new IOException("ASF file is corrupt.  Object size < 0 :" + size);
        counter.clearAmountRead();
        readObject(ds, object, size);
        int read = counter.getAmountRead();

        if (read > size)
            throw new IOException("read (" + read + ") more than size (" + size + ")");
        else if (read != size) {
            if (LOG.isDebugEnabled())
                LOG.debug("Skipping to next object.  Read: " + read + ", size: " + size);
            IOUtils.ensureSkip(ds, size - read);
        }
    }
}

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From source file:org.kualigan.maven.plugins.api.DefaultPrototypeHelper.java

/**
 * Puts temporary pom in the system temp directory. prototype-pom.xml is extracted
 * from the plugin.//from   w ww.j av a  2 s.  co  m
 */
public void extractTempPom() throws MojoExecutionException {
    getCaller().getLog().info("Extracting the Temp Pom");

    final InputStream pom_is = getClass().getClassLoader().getResourceAsStream("prototype-resources/pom.xml");

    byte[] fileBytes = null;
    try {
        final DataInputStream dis = new DataInputStream(pom_is);
        fileBytes = new byte[dis.available()];
        dis.readFully(fileBytes);
        dis.close();
    } catch (Exception e) {
        throw new MojoExecutionException("Wasn't able to read in the prototype pom", e);
    } finally {
        try {
            pom_is.close();
        } catch (Exception e) {
            // Ignore exceptions
        }
    }

    try {
        final FileOutputStream fos = new FileOutputStream(
                System.getProperty("java.io.tmpdir") + File.separator + "prototype-pom.xml");
        try {
            fos.write(fileBytes);
        } finally {
            fos.close();
        }
    } catch (Exception e) {
        throw new MojoExecutionException("Could not write temporary pom file", e);
    }
}

---

From source file:org.apache.jackrabbit.core.persistence.bundle.util.BundleBinding.java

/**
 * Write a small binary value and return the data.
 *
 * @param out the output stream to write
 * @param blobVal the binary value/*from w ww  .  j a  v  a2 s  . com*/
 * @param state the property state (for error messages)
 * @param i the index (for error messages)
 * @return the data
 * @throws IOException if the data could not be read
 */
private byte[] writeSmallBinary(DataOutputStream out, InternalValue value, NodePropBundle.PropertyEntry state,
        int i) throws IOException {
    try {
        int size = (int) value.getLength();
        out.writeInt(size);
        byte[] data = new byte[size];
        DataInputStream in = new DataInputStream(value.getStream());
        try {
            in.readFully(data);
        } finally {
            IOUtils.closeQuietly(in);
        }
        out.write(data, 0, data.length);
        return data;
    } catch (Exception e) {
        String msg = "Error while storing blob. id=" + state.getId() + " idx=" + i + " value=" + value;
        log.error(msg, e);
        throw new IOException(msg);
    }
}

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From source file:org.ow2.proactive.authentication.crypto.Credentials.java

/**
 * Creates a Credentials given its base64 encoded representation
 * /*from   w  w w. j a v a2s  .c om*/
 * @param base64enc the Credentials representation as a base64 encoded byte array,
 *  as returned by {@link Credentials#getBase64()}
 * @return the Credentials object corresponding the <code>base64en</code> representation
 * @throws KeyException
 */
public static Credentials getCredentialsBase64(byte[] base64enc) throws KeyException {
    String algo = "", cipher = "", tmp = "";
    byte[] data;
    byte[] aes;
    int size;
    byte[] asciiEnc;

    try {
        asciiEnc = Base64.decodeBase64(base64enc);
    } catch (Exception e) {
        throw new KeyException("Unable to decode base64 credentials", e);
    }

    try {
        DataInputStream in = new DataInputStream(new ByteArrayInputStream(asciiEnc));
        int read, tot = 0;
        while ((read = in.read()) != '\n') {
            if (read == -1)
                throw new KeyException("Failed to parse malformed credentials");
            algo += (char) read;
            tot++;
        }
        tot++;
        while ((read = in.read()) != '\n') {
            if (read == -1)
                throw new KeyException("Failed to parse malformed credentials");
            tmp += (char) read;
            tot++;
        }
        tot++;
        size = Integer.parseInt(tmp);
        while ((read = in.read()) != '\n') {
            if (read == -1)
                throw new KeyException("Failed to parse malformed credentials");
            cipher += (char) read;
            tot++;
        }
        tot++;
        aes = new byte[size / 8];
        for (int i = 0; i < size / 8; i++) {
            aes[i] = (byte) in.read();
            tot++;
        }

        data = new byte[asciiEnc.length - tot];
        in.readFully(data);
    } catch (Exception e) {
        throw new KeyException("Could not decode credentials", e);
    }

    return new Credentials(algo, size, cipher, aes, data);
}

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From source file:org.kawanfw.file.reflection.Reloader.java

private byte[] loadClassData(String className) throws IOException, ClassNotFoundException {

    DataInputStream dis = null;

    try {/*from   ww w .  j av a 2 s  .  c om*/

        debug("className: " + className);

        /*
         * get the actual path using the original class loader
         */
        Class<?> clazz = orig.loadClass(className);

        String simpleName = StringUtils.substringAfterLast(className, ".");
        debug("clazz                : " + clazz);
        debug("clazz.getSimpleName(): " + simpleName);

        url = clazz.getResource(simpleName + ".class");
        debug("url: " + url);

        /*
         * force reload
         */
        File file = new File(url.toURI());
        int size = (int) file.length();
        byte buff[] = new byte[size];
        dis = new DataInputStream(new FileInputStream(file));
        dis.readFully(buff);

        return buff;
    } catch (ClassNotFoundException ex) {
        throw ex;
    } catch (Exception ex) {
        throw new IOException(ex);
    } finally {
        if (dis != null) {
            dis.close();
        }
    }
}

---

From source file:org.mule.transport.comm.protocols.LengthProtocol.java

public Object read(InputStream is) throws IOException {
    // original comments indicated that we need to use read(byte[]) rather than readInt()
    // to avoid socket timeouts - don't understand, but don't want to risk change.

    // first read the data necessary to know the length of the payload
    DataInputStream dis = new DataInputStream(is);
    dis.mark(SIZE_INT);/*w  w  w .ja  v  a2s. co m*/
    // this pulls through SIZE_INT bytes
    if (null == super.read(dis, SIZE_INT)) {
        return null; // eof
    }

    // reset and read the integer
    dis.reset();
    int length = dis.readInt();
    if (logger.isDebugEnabled()) {
        logger.debug("length: " + length);
    }

    if (length < 0 || (getMaxMessageLength() > 0 && length > getMaxMessageLength())) {
        //            throw new IOException("Length " + length + " exceeds limit: " + getMaxMessageLength());
        System.out.println("Length " + length + " exceeds limit: " + getMaxMessageLength());
    }

    // finally read the rest of the data
    if (length > 0) {
        byte[] buffer = new byte[0];
        dis.readFully(buffer);
        if (logger.isDebugEnabled()) {
            logger.debug("length read: " + buffer.length);
        }

        return buffer;
    } else {
        byte[] buffer = new byte[0];
        return buffer;
    }
}

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From source file:org.commoncrawl.service.listcrawler.HDFSFileIndex.java

private void loadIndexFromLocalFile() throws IOException {
    LOG.info("Loading Index from Local File:" + _localIndexFilePath);
    // now open an input stream to the local file ...
    FileInputStream fileInputStream = new FileInputStream(_localIndexFilePath);
    DataInputStream dataStream = new DataInputStream(fileInputStream);

    try {/*from   ww  w .  ja v a2s  .  c om*/
        // deserialize bloom filter 
        _bloomFilter = BloomFilter.serializer().deserialize(dataStream);
        _indexHintCount = dataStream.readInt();

        int indexHintDataSize = _indexHintCount * INDEX_HINT_SIZE;
        // and deserialize index hints 
        _indexHints = ByteBuffer.allocate(indexHintDataSize);

        dataStream.readFully(_indexHints.array());

        // load index data buffer size 
        _indexDataSize = dataStream.readInt();
        // and capture offset information 
        _indexDataOffset = (int) fileInputStream.getChannel().position();
    } finally {
        if (fileInputStream != null) {
            fileInputStream.close();
        }
    }
    LOG.info("Successfully loaded Index");
}

---

From source file:org.echocat.jomon.net.dns.DnsServer.java

public void TCPclient(Socket s) {
    try {/*w  w w.jav a  2  s  .  c om*/
        final int inLength;
        final DataInputStream dataIn;
        final DataOutputStream dataOut;
        final byte[] in;

        final InputStream is = s.getInputStream();
        dataIn = new DataInputStream(is);
        inLength = dataIn.readUnsignedShort();
        in = new byte[inLength];
        dataIn.readFully(in);

        final Message query;
        byte[] response;
        try {
            query = new Message(in);
            response = generateReply(query, in, in.length, s);
            if (response == null) {
                return;
            }
        } catch (final IOException ignored) {
            response = formerrMessage(in);
        }
        dataOut = new DataOutputStream(s.getOutputStream());
        dataOut.writeShort(response.length);
        dataOut.write(response);
    } catch (final IOException e) {
        LOG.warn("TCPclient(" + addrport(s.getLocalAddress(), s.getLocalPort()) + ").", e);
    } finally {
        try {
            s.close();
        } catch (final IOException ignored) {
        }
    }
}

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