eu.musesproject.client.connectionmanager.TLSManager.java Source code

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Here is the source code for eu.musesproject.client.connectionmanager.TLSManager.java

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package eu.musesproject.client.connectionmanager;

/*
 * #%L
 * MUSES Client
 * %%
 * Copyright (C) 2013 - 2014 Sweden Connectivity
 * %%
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * #L%
 */
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.security.KeyStore;
import java.security.cert.Certificate;
import java.security.cert.CertificateFactory;
import org.apache.http.HttpVersion;
import org.apache.http.client.HttpClient;
import org.apache.http.conn.ClientConnectionManager;
import org.apache.http.conn.scheme.PlainSocketFactory;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.scheme.SchemeRegistry;
import org.apache.http.conn.scheme.SocketFactory;
import org.apache.http.conn.ssl.SSLSocketFactory;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpParams;
import org.apache.http.params.HttpProtocolParams;
import org.apache.http.protocol.HTTP;
import android.util.Log;
import eu.musesproject.client.utils.MusesUtils;

/**
 * Handle TLS/SSL communication with the server
 * 
 * @author Yasir Ali
 * @version Jan 27, 2014
 */

public class TLSManager {

    private static final String TAG = TLSManager.class.getSimpleName();
    private static final int HTTP_PORT = 80;
    private static final int HTTPS_PORT = 8443;

    public TLSManager() {

    }

    /**
     * Get HttpsClient object
     * @return DefaultHttpClient
     */

    public DefaultHttpClient getTLSHttpClient() {
        return (DefaultHttpClient) createHttpClient();
    }

    /**
     * Create SSLFactory object using certificate saved in the device
     * @return SSLSocketFactory
     */

    private SSLSocketFactory newSslSocketFactory() {
        try {
            InputStream in = new ByteArrayInputStream(MusesUtils.getCertificate().getBytes());
            KeyStore trustedStore = null;

            if (in != null) {
                trustedStore = convertCerToBKS(in, "muses alias", "muses11".toCharArray());
            }
            SSLSocketFactory sf = new SSLSocketFactory(trustedStore);
            sf.setHostnameVerifier(SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
            return sf;
        } catch (Exception e) {
            throw new AssertionError(e);
        }
    }

    /**
     * Convert local certificate to BKS
     * @param cerStream
     * @param alias
     *    
     * @param password
     * @return keyStore
     */
    private KeyStore convertCerToBKS(InputStream cerStream, String alias, char[] password) {
        KeyStore keyStore = null;
        try {
            keyStore = KeyStore.getInstance("BKS", "BC");
            CertificateFactory factory = CertificateFactory.getInstance("X.509", "BC");
            Certificate certificate = factory.generateCertificate(cerStream);
            keyStore.load(null, password);
            keyStore.setCertificateEntry(alias, certificate);
        } catch (Exception e) {
            Log.d(TAG, e.getLocalizedMessage());
        }
        return keyStore;
    }

    /**
     * Sreate https client object
     * @return DefaultHttpClient
     */
    private HttpClient createHttpClient() {
        HttpParams params = new BasicHttpParams();
        HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
        HttpProtocolParams.setContentCharset(params, HTTP.DEFAULT_CONTENT_CHARSET);
        HttpProtocolParams.setUseExpectContinue(params, true);

        SchemeRegistry schReg = new SchemeRegistry();
        schReg.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), HTTP_PORT));
        schReg.register(new Scheme("https", (SocketFactory) newSslSocketFactory(), HTTPS_PORT));
        ClientConnectionManager conMgr = new ThreadSafeClientConnManager(params, schReg);

        return new DefaultHttpClient(conMgr, params);
    }

}