edu.vt.alerts.android.library.util.HttpClientFactory.java Source code

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Here is the source code for edu.vt.alerts.android.library.util.HttpClientFactory.java

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/*
 * File created on Feb 24, 2014 
 *
 * Copyright 2008-2014 Virginia Polytechnic Institute and State University
 *
 * 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.
 *
 */
package edu.vt.alerts.android.library.util;

import java.io.InputStream;
import java.security.KeyStore;

import org.apache.http.client.HttpClient;
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.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 android.content.Context;
import android.util.Log;
import edu.vt.alerts.android.library.R;
import edu.vt.alerts.android.library.api.Environment;

/**
 * An implementation of the HttpClientFactory that returns the HttpClient 
 * objects as expected.
 * 
 * @author Michael Irwin
 */
public class HttpClientFactory {

    private final KeyStoreContainer subscriberKeystoreContainer = new FileBasedKeyStoreContainer();

    /**
     * Create an HttpClient that is configured with the installer certificate
     * @param context The application context
     * @param installerKeystore The installer certificate
     * @return An HttpClient configured to talk to the VTAPNS using the supplied
     * installer keystore
     * @throws Exception Anything really
     */
    public HttpClient generateInstallerClient(Context context, InputStream installerKeystore) throws Exception {

        HttpParams httpParameters = new BasicHttpParams();

        SSLSocketFactory sockfact = new SSLSocketFactory(getInstallerKeyStore(context, installerKeystore),
                "changeit", getTrustStore(context));
        SchemeRegistry registry = new SchemeRegistry();
        registry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));
        registry.register(new Scheme("https", sockfact, 443));

        return new DefaultHttpClient(new ThreadSafeClientConnManager(httpParameters, registry), httpParameters);
    }

    /**
     * Generate an HttpClient that is configured to use the subscriber's
     * certificate
     * @param context The application context
     * @param env The environment to run in
     * @return An HttpClient that is configured to talk to the VTAPNS using the
     * subscriber's certificate
     * @throws Exception Any exception really...
     */
    public HttpClient generateSubscriberClient(Context context, Environment env) throws Exception {
        HttpParams httpParameters = new BasicHttpParams();

        KeyStore keyStore = subscriberKeystoreContainer.retrieveKeyStore(context, env);
        SSLSocketFactory sockfact = new SSLSocketFactory(keyStore, "changeit", getTrustStore(context));
        SchemeRegistry registry = new SchemeRegistry();
        registry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));
        registry.register(new Scheme("https", sockfact, 443));

        return new DefaultHttpClient(new ThreadSafeClientConnManager(httpParameters, registry), httpParameters);
    }

    private KeyStore getTrustStore(Context context) throws Exception {
        KeyStore trustStore = KeyStore.getInstance("PKCS12");
        trustStore.load(context.getResources().openRawResource(R.raw.truststore), "changeit".toCharArray());
        return trustStore;
    }

    private KeyStore getInstallerKeyStore(Context context, InputStream installerKeystore) throws Exception {
        KeyStore installerKeyStore = KeyStore.getInstance("PKCS12");
        installerKeyStore.load(installerKeystore, "changeit".toCharArray());
        return installerKeyStore;
    }

}