de.incoherent.suseconferenceclient.app.HTTPWrapper.java Source code

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Here is the source code for de.incoherent.suseconferenceclient.app.HTTPWrapper.java

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/*******************************************************************************
 * Copyright (c) 2012 Matt Barringer <matt@incoherent.de>.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Public License v2.0
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * 
 * Contributors:
 *     Matt Barringer <matt@incoherent.de> - initial API and implementation
 ******************************************************************************/
package de.incoherent.suseconferenceclient.app;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.SocketException;

import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.StatusLine;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.HttpResponseException;
import org.apache.http.client.methods.HttpGet;
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.conn.ssl.X509HostnameVerifier;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.conn.SingleClientConnManager;
import org.json.JSONException;
import org.json.JSONObject;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.util.Log;

/**
 * Convenience wrapper around HTTP calls.
 *   
 * TODO This probably doesn't work with HTTPS
 */

public class HTTPWrapper {

    public static Bitmap getImage(String url) throws ClientProtocolException, IOException {
        HttpClient client = new DefaultHttpClient();
        HttpGet get = new HttpGet(url);
        Log.d("SUSEConferences", "Get: " + url);
        HttpResponse response = client.execute(get);
        StatusLine statusLine = response.getStatusLine();
        int statusCode = statusLine.getStatusCode();
        if (statusCode >= 200 && statusCode <= 299) {
            final HttpEntity entity = response.getEntity();
            if (entity != null) {
                InputStream inputStream = null;
                try {
                    inputStream = entity.getContent();
                    final Bitmap bitmap = BitmapFactory.decodeStream(inputStream);
                    return bitmap;
                } finally {
                    if (inputStream != null) {
                        inputStream.close();
                    }
                    entity.consumeContent();
                }
            } else {
                throw new HttpResponseException(statusCode, statusLine.getReasonPhrase());
            }
        } else {
            throw new HttpResponseException(statusCode, statusLine.getReasonPhrase());
        }
    }

    public static String getRawText(String url) throws ClientProtocolException, IOException {
        HttpClient client = new DefaultHttpClient();
        HttpGet get = new HttpGet(url);
        Log.d("SUSEConferences", "Get: " + url);
        HttpResponse response = client.execute(get);
        StatusLine statusLine = response.getStatusLine();
        int statusCode = statusLine.getStatusCode();
        if (statusCode >= 200 && statusCode <= 299) {
            StringBuilder builder = new StringBuilder();
            HttpEntity responseEntity = response.getEntity();
            InputStream content = responseEntity.getContent();
            BufferedReader reader = new BufferedReader(new InputStreamReader(content));
            String line;
            while ((line = reader.readLine()) != null) {
                builder.append(line);
            }
            return builder.toString();
        } else {
            throw new HttpResponseException(statusCode, statusLine.getReasonPhrase());
        }

    }

    public static JSONObject get(String url) throws IllegalStateException, SocketException,
            UnsupportedEncodingException, IOException, JSONException {
        HostnameVerifier hostnameVerifier = org.apache.http.conn.ssl.SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER;
        DefaultHttpClient client = new DefaultHttpClient();
        SchemeRegistry registry = new SchemeRegistry();
        SSLSocketFactory socketFactory = SSLSocketFactory.getSocketFactory();
        socketFactory.setHostnameVerifier((X509HostnameVerifier) hostnameVerifier);
        registry.register(new Scheme("https", socketFactory, 443));
        registry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));
        SingleClientConnManager mgr = new SingleClientConnManager(client.getParams(), registry);
        DefaultHttpClient httpClient = new DefaultHttpClient(mgr, client.getParams());
        HttpsURLConnection.setDefaultHostnameVerifier(hostnameVerifier);

        HttpGet get = new HttpGet(url);
        HttpResponse response = httpClient.execute(get);
        StatusLine statusLine = response.getStatusLine();
        int statusCode = statusLine.getStatusCode();
        if (statusCode >= 200 && statusCode <= 299) {
            return HTTPWrapper.parseResponse(response);
        } else {
            throw new HttpResponseException(statusCode, statusLine.getReasonPhrase());
        }
    }

    private static JSONObject parseResponse(HttpResponse response)
            throws IllegalStateException, IOException, UnsupportedEncodingException, JSONException {
        StringBuilder builder = new StringBuilder();
        HttpEntity responseEntity = response.getEntity();
        InputStream content = responseEntity.getContent();
        BufferedReader reader = new BufferedReader(new InputStreamReader(content));
        String line;
        while ((line = reader.readLine()) != null) {
            builder.append(line);
        }
        if (builder.length() == 0) {
            return null;
        } else {
            JSONObject ret = new JSONObject(builder.toString());
            return ret;
        }
    }
}