Authenticating with Active Directory via Kerberos

Question

I\'m working on building an android application which requires different levels of authentication, and I would like to do so using Active Directory.

From what I\'ve read

Answer 1

I found the documentation here to be really useful when I was writing my code to authenticate with my Kerberos server. Here's how I authenticate with my kerberos server, but you might need to tweak it for yours (hence me including the link):

public static final int REGISTRATION_TIMEOUT = 30 * 1000; // ms

private static DefaultHttpClient httpClient;

private static final AuthScope SERVER_AUTH_SCOPE =
    new AuthScope("urls to kerberos server", AuthScope.ANY_PORT);


public static DefaultHttpClient getHttpClient(){
    if(httpClient == null){
      httpClient = new DefaultHttpClient();
      final HttpParams params = httpClient.getParams();
      HttpConnectionParams.setConnectionTimeout(params, REGISTRATION_TIMEOUT);
      HttpConnectionParams.setSoTimeout(params, REGISTRATION_TIMEOUT);
      ConnManagerParams.setTimeout(params, REGISTRATION_TIMEOUT);
    }
    return httpClient;
  }

  public static boolean authenticate(String username, String password)
  {

    UsernamePasswordCredentials creds =
      new UsernamePasswordCredentials(username, password);
    DefaultHttpClient client = getHttpClient();
    client.getCredentialsProvider().setCredentials(SERVER_AUTH_SCOPE, creds);

    boolean authWorked = false;
    try{
      HttpGet get = new HttpGet(AUTH_URI);
      HttpResponse resp = client.execute(get);
      authWorked = resp.getStatusLine().getStatusCode() != 403
    }
    catch(IOException e){
      Log.e("TAG", "IOException exceptions");
      //TODO maybe do something?
    }
    return authWorked;
  }