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:auth.ProcessResponseServlet.java

private String decodeAuthnRequestXML(String encodedRequestXmlString) throws SamlException {
    try {//w  w w .ja v  a 2s.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:org.resthub.rpc.AMQPHessianProxy.java

/**
 * Handles the object invocation.//from  ww w. j a  va 2s .  c  o  m
 *
 * @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;
        }

        AMQPHessianProxy handler = (AMQPHessianProxy) 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();

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

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

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

        AbstractHessianInput in;

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

        int code = is.read();

        if (code == 'H') {
            int major = is.read();
            int minor = is.read();

            in = _factory.getHessian2Input(is);

            return in.readReply(method.getReturnType());
        } else if (code == 'r') {
            int major = is.read();
            int minor = is.read();

            in = _factory.getHessianInput(is);

            in.startReplyBody();

            Object value = in.readObject(method.getReturnType());

            in.completeReply();

            return value;
        } else {
            throw new HessianProtocolException("'" + (char) code + "' is an unknown code");
        }
    } catch (HessianProtocolException e) {
        throw new HessianRuntimeException(e);
    }
}

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From source file:com.gargoylesoftware.htmlunit.WebResponseData.java

private InputStream getStream(final DownloadedContent downloadedContent, final List<NameValuePair> headers)
        throws IOException {

    InputStream stream = downloadedContent_.getInputStream();
    if (stream == null) {
        return null;
    }//from   w  ww.  j  ava2  s  .c o  m

    if (downloadedContent.isEmpty()) {
        return stream;
    }

    final String encoding = getHeader(headers, "content-encoding");
    if (encoding != null) {
        if (StringUtils.contains(encoding, "gzip")) {
            stream = new GZIPInputStream(stream);
        } else if (StringUtils.contains(encoding, "deflate")) {
            boolean zlibHeader = false;
            if (stream.markSupported()) { // should be always the case as the content is in a byte[] or in a file
                stream.mark(2);
                final byte[] buffer = new byte[2];
                stream.read(buffer, 0, 2);
                zlibHeader = (((buffer[0] & 0xff) << 8) | (buffer[1] & 0xff)) == 0x789c;
                stream.reset();
            }
            if (zlibHeader) {
                stream = new InflaterInputStream(stream);
            } else {
                stream = new InflaterInputStream(stream, new Inflater(true));
            }
        }
    }
    return stream;
}

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From source file:ZipUtil.java

public static void unzipFileToFile(File flSource, File flTarget) throws IOException {
    Inflater oInflate = new Inflater(false);
    FileInputStream stmFileIn = new FileInputStream(flSource);
    FileOutputStream stmFileOut = new FileOutputStream(flTarget);
    InflaterInputStream stmInflateIn = new InflaterInputStream(stmFileIn, oInflate);

    try {/*w w w . j a  v a2 s .  com*/
        inflaterInputStmToFileOutputStm(stmInflateIn, stmFileOut);
    } //end try
    finally {
        stmFileOut.flush();
        stmFileOut.close();
        stmInflateIn.close();
        stmFileIn.close();
    }
}

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From source file:com.alibaba.citrus.service.requestcontext.session.encoder.AbstractSerializationEncoder.java

/** ? */
public Map<String, Object> decode(String encodedValue, StoreContext storeContext)
        throws SessionEncoderException {
    // 1. base64?
    byte[] cryptotext = null;

    try {//from  w  w  w .j  a v a 2 s  .com
        encodedValue = URLDecoder.decode(assertNotNull(encodedValue, "encodedValue is null"), "ISO-8859-1");
        cryptotext = Base64.decodeBase64(encodedValue.getBytes("ISO-8859-1"));

        if (isEmptyArray(cryptotext)) {
            throw new SessionEncoderException("Session state is empty: " + encodedValue);
        }
    } catch (Exception e) {
        throw new SessionEncoderException("Failed to decode session state: ", e);
    }

    // 2. 
    byte[] plaintext = decrypt(cryptotext);

    if (isEmptyArray(plaintext)) {
        throw new SessionEncoderException("Decrypted session state is empty: " + encodedValue);
    }

    // 3. 
    ByteArrayInputStream bais = new ByteArrayInputStream(plaintext);
    Inflater inf = new Inflater(false);
    InflaterInputStream iis = new InflaterInputStream(bais, inf);

    // 4. ???
    try {
        @SuppressWarnings("unchecked")
        Map<String, Object> attrs = (Map<String, Object>) serializer.deserialize(iis);
        return attrs;
    } catch (Exception e) {
        throw new SessionEncoderException("Failed to parse session state", e);
    } finally {
        try {
            iis.close();
        } catch (IOException e) {
        }

        inf.end();
    }
}

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From source file:name.npetrovski.jphar.DataEntry.java

private InputStream getCompressorInputStream(final InputStream is, Compression.Type compression)
        throws IOException {
    switch (compression) {
    case ZLIB:/*from   w  ww .  j a  va2  s .c  o  m*/
        return new InflaterInputStream(is, new Inflater(true));
    case BZIP:
        return new BZip2CompressorInputStream(is, true);
    case NONE:
        return is;
    default:
        throw new IOException("Unsupported compression type.");
    }

}

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From source file:org.codice.ddf.security.common.jaxrs.RestSecurityTest.java

@Test
public void testInflateDeflateWithTokenDuplication() throws Exception {
    String token = "valid_grant valid_grant valid_grant valid_grant valid_grant valid_grant";

    DeflateEncoderDecoder deflateEncoderDecoder = new DeflateEncoderDecoder();
    byte[] deflatedToken = deflateEncoderDecoder.deflateToken(token.getBytes());

    String cxfInflatedToken = IOUtils.toString(deflateEncoderDecoder.inflateToken(deflatedToken));

    String streamInflatedToken = IOUtils
            .toString(new InflaterInputStream(new ByteArrayInputStream(deflatedToken), new Inflater(true)));

    assertNotSame(cxfInflatedToken, token);
    assertEquals(streamInflatedToken, token);
}

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From source file:org.commoncrawl.hadoop.io.deprecated.ArcFileReader.java

/**
 * Costructs a new ArcFileReader object with specified block size (for
 * allocations)/*ww w . jav a2s  . co m*/
 */
public ArcFileReader() {

    super(_dummyStream, new Inflater(true), _blockSize);
    // set up buffer queue ...
    _consumerQueue = new LinkedBlockingQueue<BufferItem>(_bufferQueueSize);
    // setup the proper stream...
    super.in = new PushbackInputStream(new InputStream() {

        ByteBuffer _activeBuffer = null;
        byte oneByteArray[] = new byte[1];

        @Override
        public int read() throws IOException {
            if (read(oneByteArray, 0, 1) != -1) {
                return oneByteArray[0] & 0xff;
            }
            return -1;
        }

        @Override
        public int read(byte b[], int off, int len) throws IOException {
            if (_activeBuffer == null || _activeBuffer.remaining() == 0) {
                BufferItem nextItem = null;
                try {
                    // when io timeout is not specified, block indefinitely...
                    if (_ioTimeoutValue == -1) {
                        nextItem = _consumerQueue.take();
                    }
                    // otherwise wait for specified time on io
                    else {
                        nextItem = _consumerQueue.poll(_ioTimeoutValue, TimeUnit.MILLISECONDS);

                        if (nextItem == null) {
                            throw new IOException("IO Timeout waiting for Buffer");
                        }
                    }

                } catch (InterruptedException e) {
                    throw new IOException("Thread Interrupted waiting for Buffer");
                }

                if (nextItem._buffer == null) {
                    _eosReached = true;
                    // EOF CONDITION ...
                    return -1;
                } else {
                    _activeBuffer = nextItem._buffer;
                }
            }
            final int sizeAvailable = _activeBuffer.remaining();
            final int readSize = Math.min(sizeAvailable, len);

            _activeBuffer.get(b, off, readSize);

            _streamPos += readSize;

            return readSize;
        }
    }, _blockSize);
}

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From source file:org.pac4j.saml.client.RedirectSaml2ClientIT.java

private String getInflatedAuthnRequest(String location) throws Exception {
    List<NameValuePair> pairs = URLEncodedUtils.parse(URI.create(location), "UTF-8");
    Inflater inflater = new Inflater(true);
    byte[] decodedRequest = Base64.decodeBase64(pairs.get(0).getValue());
    ByteArrayInputStream is = new ByteArrayInputStream(decodedRequest);
    InflaterInputStream inputStream = new InflaterInputStream(is, inflater);
    BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
    return reader.readLine();
}

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From source file:de.hofuniversity.iisys.neo4j.websock.query.encoding.safe.TSafeDeflateJsonQueryHandler.java

@Override
public WebsockQuery decode(ByteBuffer buff) throws DecodeException {
    WebsockQuery query = null;// ww w  .  j ava 2  s  .c  o m

    try {
        //decompress
        final byte[] incoming = buff.array();
        final Inflater inflater = new Inflater(true);
        inflater.setInput(incoming);

        int read = 0;
        int totalSize = 0;
        final List<byte[]> buffers = new LinkedList<byte[]>();

        final byte[] buffer = new byte[BUFFER_SIZE];
        read = inflater.inflate(buffer);
        while (read > 0) {
            totalSize += read;
            buffers.add(Arrays.copyOf(buffer, read));
            read = inflater.inflate(buffer);
        }

        final byte[] data = fuse(buffers, totalSize).array();
        final JSONObject obj = new JSONObject(new String(data));

        if (fDebug) {
            fTotalBytesIn += incoming.length;
            fLogger.log(Level.FINEST, "received compressed JSON message: " + incoming.length + " bytes\n"
                    + "total bytes received: " + fTotalBytesIn);
        }

        query = JsonConverter.fromJson(obj);
    } catch (Exception e) {
        e.printStackTrace();
        throw new DecodeException(buff, "failed to decode JSON", e);
    }

    return query;
}

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