HudsonLoginValidator.java

package org.jabox.cis.hudson;

import java.io.IOException;

import org.apache.commons.httpclient.Credentials;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.UsernamePasswordCredentials;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.wicket.markup.html.form.PasswordTextField;
import org.apache.wicket.markup.html.form.TextField;
import org.apache.wicket.validation.IValidatable;
import org.apache.wicket.validation.validator.UrlValidator;

public class HudsonLoginValidator extends UrlValidator {
    private static final long serialVersionUID = 2635593287132542621L;

    private final TextField<String> _url;

    private final TextField<String> _username;

    private final PasswordTextField _password;

    public HudsonLoginValidator(final TextField<String> url,
            final TextField<String> username,
            final PasswordTextField password) {
        _url = url;
        _username = username;
        _password = password;
    }

    @Override
    protected void onValidate(final IValidatable<String> validatable) {
        if (!_url.isValid() || !_username.isValid()
            || !_password.isValid()) {
            return;
        }

        HttpClient client = new HttpClient();
        Credentials creds =
            new UsernamePasswordCredentials(_username.getValue(),
                _password.getValue());
        client.getState().setCredentials(null, null, creds);

        client.getState().setAuthenticationPreemptive(true);

        GetMethod get = new GetMethod(_url.getValue());

        try {
            int result = client.executeMethod(get);
            if (result == 401) {
                error(validatable);
            }
        } catch (HttpException e) {
            error(validatable);
            e.printStackTrace();
        } catch (IOException e) {
            error(validatable);
            e.printStackTrace();
        } finally {
            get.releaseConnection();
        }
    }
}