Example usage for java.io DataInputStream read

Introduction

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

Prototype

public final int read(byte b[]) throws IOException 

Source Link

Document

Reads some number of bytes from the contained input stream and stores them into the buffer array b.

Usage

From source file:de.tum.frm2.nicos_android.nicos.NicosClient.java

public void event_handler() {
    DataInputStream din = new DataInputStream(eventSocketIn);
    while (true) {
        try {//w  w w. ja va 2s . c  o  m
            // receive STX (1 byte) + eventcode (2) + length (4)
            byte[] start = new byte[7];
            try {
                //noinspection ResultOfMethodCallIgnored
                din.read(start);
            } catch (IOException e) {
                if (!disconnecting) {
                    signal("broken", "Server connection broken.");
                    _close();
                }
                return;
            }
            if (start[0] != daemon.STX) {
                // Every event starts with STX. Else, something's wrong.
                if (!disconnecting) {
                    signal("broken", "Server connection broken.");
                    _close();
                }
                return;
            }
            byte[] slice = Arrays.copyOfRange(start, 3, 7);
            ByteBuffer bb = ByteBuffer.wrap(slice);
            bb.order(ByteOrder.BIG_ENDIAN);

            // Get length, allocate byte buffer.
            int length = bb.getInt();
            byte[] buf = new byte[length];

            // Read length bytes and store them in buf.
            din.readFully(buf, 0, length);

            boolean should_signal = true;
            String event = null;
            Object data = null;
            try {
                // Stackoverflow magic to convert 2 bytes to int which can be compared in
                // daemon.command2event().
                int eventcode = ((start[1] & 0xff) << 8) | (start[2] & 0x00ff);
                event = daemon.command2event(eventcode);
                // serialized or raw data?
                if (daemon.eventNeedsUnserialize(event)) {
                    Unpickler unpickler = new Unpickler();
                    data = unpickler.loads(buf);
                } else {
                    data = buf;
                }
            } catch (Exception e) {
                // Garbled event
                should_signal = false;
            }
            if (should_signal) {
                signal(event, data);
            }
        } catch (Exception e) {
            if (!disconnecting) {
                signal("broken", "Server connection broken.");
                _close();
            }
            return;
        }
    }
}

---

From source file:br.org.indt.ndg.servlets.OpenRosaManagement.java

protected void doPost(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    m_openRosaBD.setPortAndAddress(SystemProperties.getServerAddress());

    String action = request.getParameter(ACTION_PARAM);

    if (SET_AVAILABLE_FOR_USER.equals(action)) {
        String selectedImei = request.getParameter(SELECTED_IMEI_PARAM);
        String[] selectedSurveyIds = request.getParameterValues(SELECTED_SURVEY_ID_PARAM);
        if (selectedImei != null && selectedSurveyIds != null) {
            log.info("IMEI: " + selectedImei);
            for (int i = 0; i < selectedSurveyIds.length; i++) {
                log.info("Survey id:" + selectedSurveyIds[i]);
            }//  w w w  . j  a va 2  s.  c om
        }
        boolean result = m_openRosaBD.makeSurveysAvailableForImei(selectedImei, selectedSurveyIds);
        request.setAttribute(RESULT_ATTR, result);
        dispatchSurveysForUserSelectionPage(request, response);
    } else if (EXPORT_RESULTS_FOR_USER.equals(action)) {
        ServletOutputStream outputStream = null;
        FileInputStream fileInputStream = null;
        DataInputStream dataInputStream = null;
        File file = null;
        try {
            String zipFilename = m_openRosaBD.exportZippedResultsForUser("223344556677");
            file = new File(zipFilename);
            int length = 0;
            outputStream = response.getOutputStream();
            ServletContext context = getServletConfig().getServletContext();
            String mimetype = context.getMimeType("application/octet-stream");

            response.setContentType(mimetype);
            response.setContentLength((int) file.length());
            response.setHeader("Content-Disposition", "attachment; filename=\"" + zipFilename + "\"");

            byte[] bbuf = new byte[1024];
            fileInputStream = new FileInputStream(file);
            dataInputStream = new DataInputStream(fileInputStream);

            while ((dataInputStream != null) && ((length = dataInputStream.read(bbuf)) != -1)) {
                outputStream.write(bbuf, 0, length);
            }
            outputStream.flush();
        } catch (FileNotFoundException ex) {
            ex.printStackTrace();
        } finally {
            try {
                if (fileInputStream != null)
                    fileInputStream.close();
                if (dataInputStream != null)
                    dataInputStream.close();
                if (fileInputStream != null)
                    fileInputStream.close();
            } catch (IOException ex) {
                ex.printStackTrace();
            }
            file.delete();
        }
    }
}

---

From source file:net.sf.gazpachoquest.rest.auth.TokenStore.java

/**
 * Load the current set of tokens from the token file. If reading the tokens
 * fails or the token file does not exist, tokens will be generated on
 * demand.//  w  w  w  .ja  va 2s  .  co m
 */
private void loadTokens() {
    if (tokenFile.isFile() && tokenFile.canRead()) {
        FileInputStream fin = null;
        DataInputStream keyInputStream = null;
        try {
            fin = new FileInputStream(tokenFile);
            keyInputStream = new DataInputStream(fin);
            int newCurrentToken = keyInputStream.readInt();
            long newNextUpdate = keyInputStream.readLong();
            SecretKey[] newKeys = new SecretKey[TOKEN_BUFFER_SIZE];
            for (int i = 0; i < newKeys.length; i++) {
                int isNull = keyInputStream.readInt();
                if (isNull == 1) {
                    int l = keyInputStream.readInt();
                    byte[] b = new byte[l];
                    keyInputStream.read(b);
                    newKeys[i] = new SecretKeySpec(b, HMAC_SHA1);
                } else {
                    newKeys[i] = null;
                }
            }

            // assign the tokes and schedule a next update
            nextUpdate = newNextUpdate;
            currentToken = newCurrentToken;
            currentTokens = newKeys;

        } catch (IOException e) {

            log.error("Failed to load cookie keys " + e.getMessage());

        } finally {

            if (keyInputStream != null) {
                try {
                    keyInputStream.close();
                } catch (IOException e) {
                }
            } else if (fin != null) {
                try {
                    fin.close();
                } catch (IOException e) {
                }
            }
        }
    }

    // if there was a failure to read the current tokens, create new ones
    if (currentTokens == null) {
        currentTokens = new SecretKey[TOKEN_BUFFER_SIZE];
        nextUpdate = System.currentTimeMillis();
        currentToken = 0;
    }
}

---

From source file:com.chaosinmotion.securechat.messages.SCMessageQueue.java

/**
 *  Process a data packet from the back end notification service. A data
 *  packet response form the back end has the format:
 *
 *  first byte//from  w ww  . j av  a2 s  . co  m
 *  0x20        Message
 *  0x21        Token response
 *  0x22        Login failure
 *
 *  Note login success is implicit; if login worked, we start receiving
 *  message notifications, starting with the backlog of stored messages
 *  waiting for us
 */

private void processDataPacket(byte[] data) {
    if (data.length == 0)
        return;

    if (data[0] == 0x20) {
        /*
         *  Process received message.
         */

        ByteArrayInputStream bais = new ByteArrayInputStream(data, 1, data.length - 1);
        DataInputStream dis = new DataInputStream(bais);

        try {
            boolean toflag = dis.readBoolean();
            int messageID = dis.readInt();
            int senderID = dis.readInt();
            String ts = dis.readUTF();
            String senderName = dis.readUTF();
            int messagelen = dis.readInt();
            byte[] message = new byte[messagelen];
            dis.read(message);

            dis.close();

            insertMessage(senderID, senderName, toflag, messageID, DateUtils.parseServerDate(ts), message);

        } catch (IOException e) {
            e.printStackTrace();
        }
    } else if (data[0] == 0x21) {
        /*
         * Received token; rest is string
         */

        try {
            String token = new String(data, 1, data.length - 1, "UTF-8");
            loginPhaseTwo(token);
        } catch (UnsupportedEncodingException e) {
            // SHould never happen
        }
    } else if (data[0] == 0x22) {
        /*
         *  Login failure. Close connection and start polling
         */

        closeConnection();
        startPolling("Login failure");
    }
}

---

From source file:org.sakaiproject.nakamura.auth.trusted.TokenStore.java

/**
 *
 *//*  w w  w  . j a  va2 s.c o  m*/
private void loadLocalSecretKeys() {
    FileInputStream fin = null;
    DataInputStream keyInputStream = null;
    try {
        fin = new FileInputStream(tokenFile);
        keyInputStream = new DataInputStream(fin);
        int newCurrentToken = keyInputStream.readInt();
        long newNextUpdate = keyInputStream.readLong();
        ExpiringSecretKey[] newKeys = new ExpiringSecretKey[5];
        for (int i = 0; i < newKeys.length; i++) {
            int isNull = keyInputStream.readInt();
            if (isNull == 1) {
                long expires = keyInputStream.readLong();
                String keyServerId = keyInputStream.readUTF();
                int l = keyInputStream.readInt();
                byte[] b = new byte[l];
                if (keyInputStream.read(b) != l) {
                    throw new IOException(
                            "Failed to read Key no " + i + " from Secret Keys, end of file reached ");
                }
                newKeys[i] = new ExpiringSecretKey(b, HMAC_SHA1, expires, keyServerId);
                getServerKeyCache().put(getCacheKey(keyServerId, i), newKeys[i].getSecretKeyData());
                LOG.info("Loaded Key {} from Local Store into {} ", getCacheKey(keyServerId, i),
                        getServerKeyCache());
            } else {
                newKeys[i] = null;
            }
        }
        keyInputStream.close();
        nextUpdate = newNextUpdate;
        secretKeyId = newCurrentToken;
        secretKeyRingBuffer = newKeys;

    } catch (IOException e) {
        LOG.error("Failed to load cookie keys " + e.getMessage());
    } finally {
        try {
            keyInputStream.close();
        } catch (Exception e) {
        }
        try {
            fin.close();
        } catch (Exception e) {
        }
    }
    if (secretKeyRingBuffer == null) {
        secretKeyRingBuffer = new ExpiringSecretKey[5];
        nextUpdate = System.currentTimeMillis();
        secretKeyId = 0;
    }
    if (debugCookies) {
        dumpSecretKeyRingBuffer(secretKeyRingBuffer);
    }
}

---

From source file:com.lrodriguez.SVNBrowser.java

private void doGetGetFile2(HttpServletRequest request, HttpServletResponse response)
        throws IOException, ServletException {
    logDebug("dispatching serveFile request");
    if (request.getParameter("serveFile") != null) {
        if (request.getParameter("serveFile").indexOf("..") >= 0) {
            response.sendError(404);//  w w w  .j  av a 2 s  .c om
            System.err.println("******** Invalid serveFile attempt from " + request.getRemoteAddr());
            return;
        }
        String workingCopyDir = webappRoot
                + getInitParameter(REPOSITORY_DIR).replaceAll("[/\\\\]+", "\\" + File.separator);
        String fileName = workingCopyDir
                + request.getParameter("serveFile").replaceAll("[/\\\\]+", "\\" + File.separator);

        File f = new File(fileName);

        try {
            if (f.getCanonicalPath().indexOf(workingCopyDir) != 0 || !f.exists() || !f.isFile()
                    || f.isHidden()) {
                response.sendError(404);
                System.err.println(
                        "******** Invalid serveFile attempt " + fileName + " from " + request.getRemoteAddr());
                return;
            }
        } catch (IOException e) {
            e.printStackTrace();
            response.sendError(404);
            System.err.println(
                    "******** Invalid serveFile attempt " + fileName + " from " + request.getRemoteAddr());
            return;
        }
        int length = 0;
        byte[] bbuf = new byte[1024];
        DataInputStream in = new DataInputStream(new FileInputStream(f));
        response.setHeader("Content-disposition", "attachment; filename=\"" + request.getParameter("serveFile")
                .substring(request.getParameter("serveFile").lastIndexOf("/") + 1));
        while ((in != null) && ((length = in.read(bbuf)) != -1)) {
            response.getOutputStream().write(bbuf, 0, length);
        }
        in.close();
        response.getOutputStream().flush();
        response.getOutputStream().close();
        return;
    }
}

---

From source file:hd3gtv.embddb.network.DataBlock.java

/**
 * Import mode//  w  w w  .  j  ava  2  s  . c  o  m
 */
DataBlock(Protocol protocol, byte[] request_raw_datas) throws IOException {
    if (log.isTraceEnabled()) {
        log.trace("Get raw datas" + Hexview.LINESEPARATOR + Hexview.tracelog(request_raw_datas));
    }

    ByteArrayInputStream inputstream_client_request = new ByteArrayInputStream(request_raw_datas);

    DataInputStream dis = new DataInputStream(inputstream_client_request);

    byte[] app_socket_header_tag = new byte[Protocol.APP_SOCKET_HEADER_TAG.length];
    dis.readFully(app_socket_header_tag, 0, Protocol.APP_SOCKET_HEADER_TAG.length);

    if (Arrays.equals(Protocol.APP_SOCKET_HEADER_TAG, app_socket_header_tag) == false) {
        throw new IOException("Protocol error with app_socket_header_tag");
    }

    int version = dis.readInt();
    if (version != Protocol.VERSION) {
        throw new IOException(
                "Protocol error with version, this = " + Protocol.VERSION + " and dest = " + version);
    }

    byte tag = dis.readByte();
    if (tag != 0) {
        throw new IOException("Protocol error, can't found request_name raw datas");
    }

    int size = dis.readInt();
    if (size < 1) {
        throw new IOException(
                "Protocol error, can't found request_name raw datas size is too short (" + size + ")");
    }

    byte[] request_name_raw = new byte[size];
    dis.read(request_name_raw);
    request_name = new String(request_name_raw, Protocol.UTF8);

    tag = dis.readByte();
    if (tag != 1) {
        throw new IOException("Protocol error, can't found zip raw datas");
    }

    entries = new ArrayList<>(1);

    ZipInputStream request_zip = new ZipInputStream(dis);

    ZipEntry entry;
    while ((entry = request_zip.getNextEntry()) != null) {
        entries.add(new RequestEntry(entry, request_zip));
    }
    request_zip.close();
}

---

From source file:ClassFile.java

public boolean read(DataInputStream di, ConstantPoolInfo pool[]) throws IOException {
    int len;/*  www. j av  a2 s .  com*/

    name = pool[di.readShort()];
    len = di.readInt();
    data = new byte[len];
    len = di.read(data);
    if (len != data.length)
        return (false);
    return (true);
}

---

From source file:com.duroty.application.mail.actions.AttachmentAction.java

/**
 * DOCUMENT ME!/*from   w ww .j av  a 2s.co  m*/
 *
 * @param request DOCUMENT ME!
 * @param response DOCUMENT ME!
 *
 * @throws ServletException DOCUMENT ME!
 * @throws IOException DOCUMENT ME!
 */
protected void doDownload(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    DataInputStream in = null;
    ByteArrayInputStream bais = null;
    ServletOutputStream op = null;

    try {
        String mid = request.getParameter("mid");
        String part = request.getParameter("part");

        Mail filesInstance = getMailInstance(request);

        MailPartObj obj = filesInstance.getAttachment(mid, part);

        int length = 0;
        op = response.getOutputStream();

        String mimetype = obj.getContentType();

        //
        //  Set the response and go!
        //
        //  Yes, I know that the RFC says 'attachment'.  Unfortunately, IE has a typo
        //  in it somewhere, and Netscape seems to accept this typing as well.
        //
        response.setContentType((mimetype != null) ? mimetype : "application/octet-stream");
        response.setContentLength((int) obj.getSize());
        response.setHeader("Content-Disposition", "attachement; filename=\"" + obj.getName() + "\"");
        response.setHeader("Pragma", "public");
        response.setHeader("Cache-Control", "max-age=0");

        //
        //  Stream to the requester.
        //
        byte[] bbuf = new byte[1024];
        bais = new ByteArrayInputStream(obj.getAttachent());
        in = new DataInputStream(bais);

        while ((in != null) && ((length = in.read(bbuf)) != -1)) {
            op.write(bbuf, 0, length);
        }
    } catch (Exception ex) {
    } finally {
        try {
            op.flush();
        } catch (Exception ex) {
        }

        IOUtils.closeQuietly(bais);
        IOUtils.closeQuietly(in);
        IOUtils.closeQuietly(op);
    }
}

---

From source file:com.duroty.application.files.actions.DownloadFileAction.java

/**
 * DOCUMENT ME!/*from   w  w w  .j  a v  a 2 s .  c om*/
 *
 * @param request DOCUMENT ME!
 * @param response DOCUMENT ME!
 *
 * @throws ServletException DOCUMENT ME!
 * @throws IOException DOCUMENT ME!
 */
protected void doDownload(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    DataInputStream in = null;
    ByteArrayInputStream bais = null;
    ServletOutputStream op = null;

    try {
        String mid = request.getParameter("mid");
        String part = request.getParameter("part");

        Files filesInstance = getFilesInstance(request);

        MailPartObj obj = filesInstance.getAttachment(mid, part);

        int length = 0;
        op = response.getOutputStream();

        String mimetype = obj.getContentType();

        //
        //  Set the response and go!
        //
        //  Yes, I know that the RFC says 'attachment'.  Unfortunately, IE has a typo
        //  in it somewhere, and Netscape seems to accept this typing as well.
        //
        response.setContentType((mimetype != null) ? mimetype : "application/octet-stream");
        response.setContentLength((int) obj.getSize());
        response.setHeader("Content-Disposition", "attachement; filename=\"" + obj.getName() + "\"");
        response.setHeader("Pragma", "public");
        response.setHeader("Cache-Control", "max-age=0");

        //
        //  Stream to the requester.
        //
        byte[] bbuf = new byte[1024];
        bais = new ByteArrayInputStream(obj.getAttachent());
        in = new DataInputStream(bais);

        while ((in != null) && ((length = in.read(bbuf)) != -1)) {
            op.write(bbuf, 0, length);
        }
    } catch (Exception ex) {
    } finally {
        try {
            op.flush();
        } catch (Exception ex) {
        }

        IOUtils.closeQuietly(bais);
        IOUtils.closeQuietly(in);
        IOUtils.closeQuietly(op);
    }
}

---

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