Android Open Source - security-cam Http Utilities

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License

The source code is released under:

MIT License

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Java Source Code

package berlin.reiche.securitas.util;
/*  w  w  w . j a v a  2s .  c  o  m*/
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpRequestBase;
import org.apache.http.message.BasicNameValuePair;

import berlin.reiche.securitas.Settings;

import android.net.http.AndroidHttpClient;
import android.util.Base64;
import android.util.Log;

/**
 * A utility class with functionality for the HTTP communication.
 * 
 * @author Konrad Reiche
 * 
 */
public class HttpUtilities {

  /**
   * Tag for logging.
   */
  private static final String TAG = HttpUtilities.class.getSimpleName();

  /**
   * The Android HTTP client is used over and over again. This factory method
   * constructs one and sets the appropriate parameters.
   * 
   * @return a fully configured Android HTTP client.
   */
  public static AndroidHttpClient newHttpClient() {
    AndroidHttpClient client = AndroidHttpClient.newInstance("Android");
    client.getParams().setIntParameter("http.connection.timeout", 2000);
    return client;
  }

  /**
   * Sets the headers for delivering the credentials.
   * 
   * @param request
   *            The request to be modified.
   * @param settings
   *            the settings containing the necessary credentials.
   */
  public static void setAuthorization(HttpRequestBase request,
      Settings settings) {

    String user = settings.getUsername();
    String password = settings.getPassword();
    byte[] rawCredentials = (user + ":" + password).getBytes();
    String credentials = Base64.encodeToString(rawCredentials,
        Base64.URL_SAFE | Base64.NO_WRAP);
    request.setHeader("Authorization", "Basic " + credentials);
  }

  /**
   * Sets the request body by taking a data array and transforming it to
   * parameter-value pairs.
   * 
   * @param request
   *            the request to be modified.
   * @param data
   *            two-dimensional data array containing parameter-value pairs.
   */
  public static void setRequestBody(HttpPost request, String[][] data) {

    List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
    for (int i = 0; i < data.length; i++) {
      nameValuePairs.add(new BasicNameValuePair(data[i][0], data[i][1]));
    }
    try {
      request.setEntity(new UrlEncodedFormEntity(nameValuePairs));
    } catch (UnsupportedEncodingException e) {
      Log.e(TAG, "The encoding is not supported: " + e.getMessage());
    }
  }

  /**
   * Wrapper for closing the connection of a Android HTTP client.
   * 
   * @param client
   *            the client to be closed.
   */
  public static void closeClient(HttpClient client) {
    if (client instanceof AndroidHttpClient) {
      ((AndroidHttpClient) client).close();
    } else {
      client.getConnectionManager().shutdown();
    }
  }

}

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