Android Open Source - RateBeer-Mobile Net Broker

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License

The source code is released under:
GNU General Public License
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Java Source Code

/*
 * Copyright 2010, Jesper Fussing Mrk/* w w w.j a v  a  2 s. co  m*/
 *
 * This file is part of Ratebeer Mobile for Android.
 *
 * Ratebeer Mobile 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.
 *
 * Ratebeer Mobile 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 Ratebeer Mobile.  If not, see <http://www.gnu.org/licenses/>.
 */
package dk.moerks.ratebeermobile.io;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.params.CookiePolicy;
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.cookie.Cookie;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpParams;

import android.content.Context;
import android.content.SharedPreferences;
import android.graphics.drawable.Drawable;
import android.util.Log;
import dk.moerks.ratebeermobile.Settings;
import dk.moerks.ratebeermobile.exceptions.LoginException;
import dk.moerks.ratebeermobile.exceptions.NetworkException;

public class NetBroker {
  private static final String LOGTAG = "NetBroker";
  
  public static String doGet(Context context, String url) throws NetworkException {
    return doGet(context, null, url);
  }
  
  public static Drawable doGetImage(Context context, DefaultHttpClient httpclient, String url) throws NetworkException {
    
    if(httpclient == null){
      httpclient = init();
    }
    
    Log.d(LOGTAG, "URL: " + url);
    HttpGet httpget = new HttpGet(url);  

    try {  
      // Execute HTTP Post Request  
      HttpResponse response = httpclient.execute(httpget);  
      Drawable result = responseDrawable(response);
      response.getEntity().consumeContent();
      
      return result; 
    } catch (ClientProtocolException e) {
    } catch (IOException e) {
    } catch (Exception e){
      throw new NetworkException(context, LOGTAG, "Network Error - Do you have a network connection?", e);
    }
    
    return null;
  }
  
  public static String doGet(Context context, DefaultHttpClient httpclient, String url) throws NetworkException {
    
    if(httpclient == null){
      httpclient = init();
    }
    
    Log.d(LOGTAG, "URL: " + url);
    HttpGet httpget = new HttpGet(url);  

    try {  
      // Execute HTTP Post Request  
      HttpResponse response = httpclient.execute(httpget);  
      String result = responseString(response);
      response.getEntity().consumeContent();
      
      return result; 
    } catch (ClientProtocolException e) {
    } catch (IOException e) {
    } catch (Exception e){
      throw new NetworkException(context, LOGTAG, "Network Error - Do you have a network connection?", e);
    }
    
    return null;
  }

  public static String doRBGet(Context context, String url) throws NetworkException, LoginException {
    DefaultHttpClient httpclient = init();

    signin(context, httpclient);
    
    return doGet(context, httpclient, url);
  }

  public static String doPost(Context context, String url, List<NameValuePair> parameters) throws NetworkException {
    return doPost(context, null, url, parameters);
  }
  
  public static String doPost(Context context, DefaultHttpClient httpclient, String url, List<NameValuePair> parameters) throws NetworkException {
    if(httpclient == null){
      httpclient = init();
    }
    
    HttpPost httppost = new HttpPost(url);
    //httppost.setHeader("User-Agent", "Mozilla/5.0 (compatible; MSIE 7.0; Windows 2000)");
 
    for (Iterator<NameValuePair> iterator = parameters.iterator(); iterator.hasNext();) {
      NameValuePair nameValuePair = iterator.next();
      Log.d(LOGTAG, nameValuePair.getName() + " :: " + nameValuePair.getValue());
    }
    
    try {  
      // Add your data  
      httppost.setEntity(new UrlEncodedFormEntity(parameters));  
      
      // Execute HTTP Post Request
      Log.d(LOGTAG, "Executing Post");
      HttpResponse response = httpclient.execute(httppost);
      Log.d(LOGTAG, "Post Executed");
      Log.d(LOGTAG, "Post Response Code: " + response.getStatusLine().getStatusCode());
      String result = responseString(response);
      Log.d(LOGTAG, "Response String length: " + result.length());
      //Log.d(LOGTAG, result);
      response.getEntity().consumeContent();
      
      if(response.getStatusLine().getStatusCode() != 200){
        return null;
      }
      
      return result;
    } catch (ClientProtocolException e) {
      throw new NetworkException(context, LOGTAG, "Network Error - Do you have a network connection?", e);
    } catch (IOException e) {
      throw new NetworkException(context, LOGTAG, "Network Error - Do you have a network connection?", e);
    } catch (Exception e){
      throw new NetworkException(context, LOGTAG, "Network Error - Do you have a network connection?", e);
    } finally {
      httpclient.getConnectionManager().shutdown();
    }
  }
  
  public static String doRBPost(Context context, String url, List<NameValuePair> parameters) throws NetworkException, LoginException {
    DefaultHttpClient httpclient = init();

    Log.d(LOGTAG, "RBPost - Signin");
    signin(context, httpclient);
    
    return doPost(context, httpclient, url, parameters);
  }
  
  private static void signin(Context context, DefaultHttpClient httpclient) throws NetworkException, LoginException {
    HttpPost httppost = new HttpPost("http://www.ratebeer.com/signin/");  
    Log.d(LOGTAG, "Before Try");
    try {  
      SharedPreferences settings = context.getSharedPreferences(Settings.PREFERENCETAG, 0);
      String username = settings.getString("rb_username", "");
      String password = settings.getString("rb_password", "");
      
      if(username != null && password != null && username.length()>0 && password.length() > 0){
        Log.d(LOGTAG, "Building Login Request");
        // Add your data  
        List<NameValuePair> parameters = new ArrayList<NameValuePair>();  
        parameters.add(new BasicNameValuePair("SaveInfo", "on"));  
        parameters.add(new BasicNameValuePair("username", username));  
        parameters.add(new BasicNameValuePair("pwd", password));  
        httppost.setEntity(new UrlEncodedFormEntity(parameters));  
  
        //Check to see if we are already logged in
        List<Cookie> beforeCookies = httpclient.getCookieStore().getCookies();
        for (Iterator<Cookie> iterator = beforeCookies.iterator(); iterator.hasNext();) {
          Cookie cookie = iterator.next();
          if(cookie.getName().equalsIgnoreCase("SessionCode")){
            return;
          }
        }
  
        Log.d(LOGTAG, "Executing Login Request");
        // Execute HTTP Post Request  
        HttpResponse result = httpclient.execute(httppost);
        int statusCode = result.getStatusLine().getStatusCode();
        
        Log.d(LOGTAG, "Validating we got the right status from server: " + statusCode);
        if(statusCode == 200){
          List<Cookie> cookies = httpclient.getCookieStore().getCookies();
          
          Log.d(LOGTAG, "Start Validating Cookies. List length: " + cookies.size());
          for (Iterator<Cookie> iterator = cookies.iterator(); iterator.hasNext();) {
            Cookie cookie = iterator.next();
            
            Log.d(LOGTAG, "Matching Cookie: " + cookie.getName());
            if(cookie.getName().equalsIgnoreCase("SessionCode")){
              result.getEntity().consumeContent();
              return;
            }
          }
          throw new LoginException(LOGTAG, "Login to ratebeer.com failed. Check your credentials");
        } else {
          throw new LoginException(LOGTAG, "Login to ratebeer.com failed. Check your credentials");
        }
      } else {
        throw new LoginException(LOGTAG, "Login to ratebeer.com failed. Check your credentials");
      }
    } catch (ClientProtocolException e) { 
    } catch (IOException e) {
      throw new NetworkException(context, LOGTAG, "Network Error - Do you have a network connection?", e);
    }
  }
  
  private static String responseString(HttpResponse response){
    try {
      ByteArrayOutputStream ostream = new ByteArrayOutputStream();  
      response.getEntity().writeTo(ostream);
      //return ostream.toString("ISO8859_1");
      return ostream.toString("windows-1252"); 
    } catch(IOException e){
      e.printStackTrace();
    }
    return null;
  }
  
  private static Drawable responseDrawable(HttpResponse response){
    try {
      Drawable result = Drawable.createFromStream(response.getEntity().getContent(), "tmp.jpg");
      Log.d(LOGTAG, "HEIGHT: " + result.getMinimumHeight());
      return result;
    } catch(IOException e){
      e.printStackTrace();
    }
    return null;
  }
  
  private static DefaultHttpClient init(){
    HttpParams params = new BasicHttpParams();
    params.setParameter("CookiePolicy", CookiePolicy.BROWSER_COMPATIBILITY);
    
    SchemeRegistry registry = new SchemeRegistry();
        registry.register(new Scheme("http", new PlainSocketFactory(), 80));
        registry.register(new Scheme("https",SSLSocketFactory.getSocketFactory(), 443));

    return new DefaultHttpClient(new ThreadSafeClientConnManager(params, registry), params);
  }
}
Java Source Code List
