gistfile1.java

/* Android Push API
 *
 * * * * */

import android.net.http;
import org.json;
import javax.crypto.*;


public class Pusher {
  private final static String host = "api.pusherapp.com";
  private final static String apiKey = "";
  private final static String apiSecret = "";
  private final static String appId = "";
  
  private static URL buildURI(String uriPath, String query, String signature) {
    StringBuffer buffer = new StringBuffer();
    //Protocol
     buffer.append("http://");
     //Host
     buffer.append(host);
     //URI Path
     buffer.append(uriPath);
     //Query string
     buffer.append("?");
     buffer.append(query);
     //Authentication signature
     buffer.append("&auth_signature=");
     buffer.append(signature);
     //Build URI
     try {
       return new URL(buffer.toString());
     } catch (MalformedURLException e) {
       throw new RuntimeException("Malformed URI");
     }
  }
  
  private static String hmacsha256Representation(String data) {
    try {
      final SecretKeySpec signingKey = new SecretKeySpec( pusherApplicationSecret.getBytes(), "HmacSHA256");
      final Mac mac = Mac.getInstance("HmacSHA256");
      mac.init(signingKey);
      byte[] digest = mac.doFinal(data.getBytes("UTF-8"));
      digest = mac.doFinal(data.getBytes());
      BigInteger bigInteger = new BigInteger(1,digest);
      return String.format("%0" + (digest.length << 1) + "x", bigInteger);
    } catch (NoSuchAlgorithmException nsae) {
      throw new RuntimeException("No HMac SHA256 algorithm");
    } catch (UnsupportedEncodingException e) {
      throw new RuntimeException("No UTF-8");
    } catch (InvalidKeyException e) {
      throw new RuntimeException("Invalid key exception while converting to HMac SHA256");
    }
  }
  
  
  
}