JavaCloud.Utils.java Source code

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Here is the source code for JavaCloud.Utils.java

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/**
 * Copyright (c) 2014 Marta Nabozny, Maciej Nabozny
 *
 * This file is part of OverCluster project.
 *
 * OverCluster is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package JavaCloud;

import com.google.api.client.http.*;
import org.json.simple.*;

import com.google.api.client.http.javanet.NetHttpTransport;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;

import java.io.IOException;
import java.io.OutputStream;
import java.math.BigInteger;
import java.security.MessageDigest;

public class Utils {

    public static Object request(String address, String function, final JSONObject params) throws CoreException {
        try {
            GenericUrl url = new GenericUrl(address + "/" + function);
            NetHttpTransport transport = new NetHttpTransport();
            HttpRequest request = transport.createRequestFactory().buildPostRequest(url, new HttpContent() {
                @Override
                public long getLength() throws IOException {
                    return params.toString().length();
                }

                @Override
                public String getType() {
                    return "text/json";
                }

                @Override
                public boolean retrySupported() {
                    return false;
                }

                @Override
                public void writeTo(OutputStream outputStream) throws IOException {
                    outputStream.write(params.toString().getBytes());
                }
            });
            HttpResponse response = request.execute();
            JSONParser parser = new JSONParser();
            JSONObject object = (JSONObject) parser.parse(response.parseAsString());

            if (!object.get("status").equals("ok")) {
                throw new CoreException(object.get("status").toString());
            }

            if (object.containsKey("data") && object.get("data") != null)
                return parser.parse(object.get("data").toString());
            else
                return null;
        } catch (ParseException e) {
            System.out.println("Error parsing response: " + e.toString());
            throw new CoreException("json_malformed");
        } catch (IOException e) {
            System.out.println("Error connecting to server: " + e.toString());
            throw new CoreException("connection_failed");
        }
    }

    public static String calcHash(String password, String seed) {
        try {
            MessageDigest crypt = MessageDigest.getInstance("SHA-1");
            crypt.reset();

            String tuple = password + seed;

            crypt.update(tuple.getBytes("UTF-8"));
            return new BigInteger(1, crypt.digest()).toString(16);
        } catch (Exception e) {
            return null;
        }
    }
}