Not trusted certificate using ksoap2-android

Question

I'm using ksoap2-android to make a call to wcf service over SSL. I can get it to work without SSL, but now I want to make the call over SSL, but I've run in to some problems.

I'm using the HttpsTransportSE instead of HttpTransportSE, but I'm getting the error: javax.net.ssl.SSLException: Not trusted server certificate

How can I fix this?

Can I add the server certificate to the Keystore in Android to solve the problem?

private static final String SOAP_ACTION = "http://example.com/Service/GetInformation";
private static final String METHOD_NAME = "GetInformation";
private static final String NAMESPACE = "http://example.com";    
private static final String URL = "dev.example.com/Service.svc";

public static Result GetInformation()
{
    SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);

    PropertyInfo property = new PropertyInfo();
    property.name = "request";

    Request request =
        new Request("12", "13", "Ben");

    userInformationProperty.setValue(request);
    userInformationProperty.setType(request.getClass());
    request.addProperty(property);

    SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
    envelope.dotNet = true;
    envelope.setOutputSoapObject(request);
    envelope.addMapping(NAMESPACE, "Request",new Request().getClass());

    HttpsTransportSE transport = new HttpsTransportSE(URL, 443, "", 1000);

    //HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
    transport.debug = true;

    try
    {
        transport.call(SOAP_ACTION, envelope);          
        return Result.FromSoapResponse((SoapObject)envelope.getResponse());
    }
    catch (IOException e)
    {
        e.printStackTrace();
    }
    catch (XmlPullParserException e)
    {
        e.printStackTrace();
    }

    return null;
}

Answer 1

To complement the answer of Vedran with some source code, sorry I can't comment.

The trustManager:

private static TrustManager[] trustManagers;

public static class _FakeX509TrustManager implements
        javax.net.ssl.X509TrustManager {
    private static final X509Certificate[] _AcceptedIssuers = new X509Certificate[] {};

    public void checkClientTrusted(X509Certificate[] arg0, String arg1)
            throws CertificateException {
    }

    public void checkServerTrusted(X509Certificate[] arg0, String arg1)
            throws CertificateException {
    }

    public boolean isClientTrusted(X509Certificate[] chain) {
        return (true);
    }

    public boolean isServerTrusted(X509Certificate[] chain) {
        return (true);
    }

    public X509Certificate[] getAcceptedIssuers() {
        return (_AcceptedIssuers);
    }
}

public static void allowAllSSL() {

    javax.net.ssl.HttpsURLConnection
            .setDefaultHostnameVerifier(new HostnameVerifier() {
                public boolean verify(String hostname, SSLSession session) {
                    return true;
                }
            });

    javax.net.ssl.SSLContext context = null;

    if (trustManagers == null) {
        trustManagers = new javax.net.ssl.TrustManager[] { new _FakeX509TrustManager() };
    }

    try {
        context = javax.net.ssl.SSLContext.getInstance("TLS");
        context.init(null, trustManagers, new SecureRandom());
    } catch (NoSuchAlgorithmException e) {
        Log.e("allowAllSSL", e.toString());
    } catch (KeyManagementException e) {
        Log.e("allowAllSSL", e.toString());
    }
    javax.net.ssl.HttpsURLConnection.setDefaultSSLSocketFactory(context
            .getSocketFactory());
}

The call at your method:

allowAllSSL();
HttpsTransportSE httpsTransport = new HttpsTransportSE(Server,443, URL, 1000);

Notes:

1. Server is the server url.
2. 443 is the default https port, you still have to specify a port since the constructor expects one.
3. URL the path to the WS operation
4. 1000 es the timeout

Which is constructed as: [https://Server:443/URL]