Example usage for java.util.zip Inflater Inflater

Introduction

In this page you can find the example usage for java.util.zip Inflater Inflater.

Prototype

public Inflater(boolean nowrap) 

Source Link

Document

Creates a new decompressor.

Usage

From source file:divconq.ctp.stream.UngzipStream.java

public UngzipStream() {
    this.inflater = new Inflater(true);
    this.crc = new CRC32();
}

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From source file:de.hofuniversity.iisys.neo4j.websock.query.encoding.unsafe.DeflateJsonQueryHandler.java

public DeflateJsonQueryHandler() {
    fLogger = Logger.getLogger(this.getClass().getName());
    fDebug = (fLogger.getLevel() == Level.FINEST);
    fCompression = DEFAULT_COMPRESSION_LEVEL;

    fInflater = new Inflater(true);
}

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From source file:de.hofuniversity.iisys.neo4j.websock.query.encoding.unsafe.DeflateJsonQueryHandler.java

public DeflateJsonQueryHandler(final String compression) {
    fLogger = Logger.getLogger(this.getClass().getName());
    fDebug = (fLogger.getLevel() == Level.FINEST);

    fInflater = new Inflater(true);

    int tmpComp = DEFAULT_COMPRESSION_LEVEL;

    if (WebsockConstants.FASTEST_COMPRESSION.equals(compression)) {
        tmpComp = Deflater.BEST_SPEED;
    } else if (WebsockConstants.BEST_COMPRESSION.equals(compression)) {
        tmpComp = Deflater.BEST_COMPRESSION;
    } else {//  w  w  w .  j  av  a2  s .  com
        fLogger.log(Level.WARNING, "unknown compression level '" + compression + "'; using default.");
    }

    fCompression = tmpComp;
}

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From source file:com.tremolosecurity.unison.u2f.util.U2fUtil.java

private static String inflate(String saml) throws Exception {
    byte[] compressedData = Base64.decodeBase64(saml);
    ByteArrayInputStream bin = new ByteArrayInputStream(compressedData);

    InflaterInputStream decompressor = new InflaterInputStream(bin, new Inflater(true));
    //decompressor.setInput(compressedData);

    // Create an expandable byte array to hold the decompressed data
    ByteArrayOutputStream bos = new ByteArrayOutputStream(compressedData.length);

    // Decompress the data
    byte[] buf = new byte[1024];
    int len;/*from   w  w  w.j a v a 2s .  co m*/
    while ((len = decompressor.read(buf)) > 0) {

        bos.write(buf, 0, len);

    }
    try {
        bos.close();
    } catch (IOException e) {
    }

    // Get the decompressed data
    byte[] decompressedData = bos.toByteArray();

    String decoded = new String(decompressedData);

    return decoded;
}

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From source file:com.nesscomputing.tinyhttp.HttpContentResponseHandler.java

/**
 * Processes the client response./*from  w w w.j a  v  a2s .  c  o  m*/
 */
public T handle(final HttpRequest request, final HttpResponse response) throws IOException {
    // Find the response stream - the error stream may be valid in cases
    // where the input stream is not.
    InputStream is = null;
    try {
        final HttpEntity httpEntity = response.getEntity();
        if (httpEntity != null) {
            is = httpEntity.getContent();
        }
    } catch (IOException e) {
        log.warn("Could not locate response body stream", e);
        // normal for 401, 403 and 404 responses, for example...
    }

    if (is == null) {
        // Fall back to zero length response.
        is = new NullInputStream(0);
    }

    final Header header = response.getFirstHeader("Content-Encoding");
    if (header != null) {
        final String encoding = StringUtils.trimToEmpty(header.getValue());

        if (StringUtils.equalsIgnoreCase(encoding, "gzip")
                || StringUtils.equalsIgnoreCase(encoding, "x-gzip")) {
            log.debug("Found GZIP stream");
            is = new GZIPInputStream(is);
        } else if (StringUtils.equalsIgnoreCase(encoding, "deflate")) {
            log.debug("Found deflate stream");
            final Inflater inflater = new Inflater(true);
            is = new InflaterInputStream(is, inflater);
        }
    }
    return contentConverter.convert(request, response, is);
}

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From source file:org.slc.sli.sandbox.idp.saml.SamlRequestDecoder.java

public SamlRequest decode(String encodedSamlRequest) {
    byte[] decodedCompressed = Base64.decodeBase64(encodedSamlRequest);
    Inflater inflater = new Inflater(true);
    InflaterInputStream xmlInputStream = new InflaterInputStream(new ByteArrayInputStream(decodedCompressed),
            inflater);// w w w. ja  v a  2 s.  co  m
    Document doc;

    try {
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        factory.setFeature("http://xml.org/sax/features/external-general-entities", false);
        factory.setFeature("http://xml.org/sax/features/external-parameter-entities", false);
        factory.setFeature("http://apache.org/xml/features/disallow-doctype-decl", true);
        DocumentBuilder docBuilder = factory.newDocumentBuilder();

        doc = docBuilder.parse(xmlInputStream);
    } catch (ParserConfigurationException e) {
        throw new SamlProcessException(e);
    } catch (SAXException e) {
        throw new SamlProcessException(e);
    } catch (IOException e) {
        throw new SamlProcessException(e);
    }
    Element element = doc.getDocumentElement();
    String id = element.getAttribute("ID");
    boolean forceAuthn = Boolean.valueOf(element.getAttribute("ForceAuthn"));
    String simpleIDPDestination = element.getAttribute("Destination");
    NodeList nodes = element.getElementsByTagName("saml:Issuer");
    String issuer = null;
    if (nodes.getLength() > 0) {
        Node item = nodes.item(0);
        issuer = item.getFirstChild().getNodeValue();
    } else {
        throw new IllegalArgumentException("No Issuer element on AuthnRequest");
    }

    if (id == null) {
        throw new IllegalArgumentException("No ID attribute on AuthnRequest.");
    }
    String responseDestination = cot.get(issuer);
    if (responseDestination == null) {
        throw new IllegalArgumentException("Issuer of AuthnRequest is unknown.");
    }

    return new SamlRequest(responseDestination, simpleIDPDestination, id, forceAuthn);
}

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From source file:org.resthub.rpc.AMQPProxy.java

/**
 * Handles the object invocation.//from w ww  .j a  v a2  s .  c  om
 *
 * @param proxy  the proxy object to invoke
 * @param method the method to call
 * @param args   the arguments to the proxy object
 */
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
    String methodName = method.getName();
    Class<?>[] params = method.getParameterTypes();

    // equals and hashCode are special cased
    if (methodName.equals("equals") && params.length == 1 && params[0].equals(Object.class)) {
        Object value = args[0];
        if (value == null || !Proxy.isProxyClass(value.getClass())) {
            return Boolean.FALSE;
        }

        AMQPProxy handler = (AMQPProxy) Proxy.getInvocationHandler(value);

        return _factory.equals(handler._factory);
    } else if (methodName.equals("hashCode") && params.length == 0) {
        return _factory.hashCode();
    } else if (methodName.equals("toString") && params.length == 0) {
        return "[HessianProxy " + proxy.getClass() + "]";
    }

    ConnectionFactory connectionFactory = _factory.getConnectionFactory();

    Message response = sendRequest(connectionFactory, method, args);

    if (response == null) {
        throw new TimeoutException();
    }

    MessageProperties props = response.getMessageProperties();
    boolean compressed = "deflate".equals(props.getContentEncoding());

    InputStream is = new ByteArrayInputStream(response.getBody());
    if (compressed) {
        is = new InflaterInputStream(is, new Inflater(true));
    }

    return _factory.getSerializationHandler().readObject(method.getReturnType(), is);
}

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From source file:org.wso2.identity.integration.test.requestPathAuthenticator.RequestPathAuthenticatorInvalidUserTestCase.java

/**
 * Decoding and deflating the encoded AuthReq
 *
 * @param encodedStr encoded AuthReq/*  w w w  .  j a  v  a  2s .c o  m*/
 * @return decoded AuthReq
 */
private static String decode(String encodedStr) {
    try {
        Base64 base64Decoder = new Base64();
        byte[] xmlBytes = encodedStr.getBytes(DEFAULT_CHARSET);
        byte[] base64DecodedByteArray = base64Decoder.decode(xmlBytes);

        try {
            Inflater inflater = new Inflater(true);
            inflater.setInput(base64DecodedByteArray);
            byte[] xmlMessageBytes = new byte[5000];
            int resultLength = inflater.inflate(xmlMessageBytes);

            if (!inflater.finished()) {
                throw new RuntimeException("End of the compressed data stream has NOT been reached");
            }

            inflater.end();
            String decodedString = new String(xmlMessageBytes, 0, resultLength, (DEFAULT_CHARSET));
            return decodedString;

        } catch (DataFormatException e) {
            ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(base64DecodedByteArray);
            ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
            InflaterInputStream iis = new InflaterInputStream(byteArrayInputStream);
            byte[] buf = new byte[1024];
            int count = iis.read(buf);
            while (count != -1) {
                byteArrayOutputStream.write(buf, 0, count);
                count = iis.read(buf);
            }
            iis.close();
            String decodedStr = new String(byteArrayOutputStream.toByteArray(), StandardCharsets.UTF_8);

            return decodedStr;
        }
    } catch (IOException e) {
        Assert.fail("Error while decoding SAML response", e);
        return "";
    }
}

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From source file:servlets.ProcessResponseServlet.java

private String decodeAuthnRequestXML(String encodedRequestXmlString) throws SamlException {
    try {/* w  ww .  ja  v a2  s.c o m*/
        // URL decode
        // No need to URL decode: auto decoded by request.getParameter() method

        // Base64 decode
        Base64 base64Decoder = new Base64();
        byte[] xmlBytes = encodedRequestXmlString.getBytes("UTF-8");
        byte[] base64DecodedByteArray = base64Decoder.decode(xmlBytes);

        //Uncompress the AuthnRequest data
        //First attempt to unzip the byte array according to DEFLATE (rfc 1951)
        try {

            Inflater inflater = new Inflater(true);
            inflater.setInput(base64DecodedByteArray);
            // since we are decompressing, it's impossible to know how much space we
            // might need; hopefully this number is suitably big
            byte[] xmlMessageBytes = new byte[5000];
            int resultLength = inflater.inflate(xmlMessageBytes);

            if (!inflater.finished()) {
                throw new RuntimeException("didn't allocate enough space to hold " + "decompressed data");
            }

            inflater.end();
            return new String(xmlMessageBytes, 0, resultLength, "UTF-8");

        } catch (DataFormatException e) {

            // if DEFLATE fails, then attempt to unzip the byte array according to
            // zlib (rfc 1950)      
            ByteArrayInputStream bais = new ByteArrayInputStream(base64DecodedByteArray);
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            InflaterInputStream iis = new InflaterInputStream(bais);
            byte[] buf = new byte[1024];
            int count = iis.read(buf);
            while (count != -1) {
                baos.write(buf, 0, count);
                count = iis.read(buf);
            }
            iis.close();
            return new String(baos.toByteArray());
        }

    } catch (UnsupportedEncodingException e) {
        throw new SamlException("Error decoding AuthnRequest: " + "Check decoding scheme - " + e.getMessage());
    } catch (IOException e) {
        throw new SamlException("Error decoding AuthnRequest: " + "Check decoding scheme - " + e.getMessage());
    }
}

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From source file:cn.vko.hessian.core.VkoHessianProxy.java

@Override
protected InputStream getInputStream(HessianConnection conn) throws IOException {
    InputStream is = conn.getInputStream();
    byte[] content = IOUtils.toByteArray(is);
    is.close();//from   w w w  .j  a  v a2 s  .co m
    if (factory.isEncrypt()) {
        // 
        content = factory.getEncrypt().decrypt(content);
    }
    if ("lz4".equals(conn.getContentEncoding())) {
        content = Lz4Compress.uncompress(content);
        is = new ByteArrayInputStream(content);
    } else if ("deflate".equals(conn.getContentEncoding())) {
        is = new InflaterInputStream(new ByteArrayInputStream(content), new Inflater(true));
    }
    return is;
}

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