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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2010-2011 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * http://glassfish.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
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 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
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package com.sun.jersey.client.apache.config;

import org.apache.commons.httpclient.Credentials;
import org.apache.commons.httpclient.NTCredentials;
import org.apache.commons.httpclient.UsernamePasswordCredentials;
import org.apache.commons.httpclient.auth.AuthScheme;
import org.apache.commons.httpclient.auth.CredentialsNotAvailableException;
import org.apache.commons.httpclient.auth.CredentialsProvider;
import org.apache.commons.httpclient.auth.NTLMScheme;
import org.apache.commons.httpclient.auth.RFC2617Scheme;

import javax.swing.*;
import java.io.IOException;

/**
 * A simple interactive credentials provider using Swing dialogs to prompt
 * the user for a user name and password.
 *
 * @author [email protected]
 */
public class DefaultCredentialsProvider implements CredentialsProvider {

    public Credentials getCredentials(AuthScheme scheme,
            String host,
            int port,
            boolean proxy)
            throws CredentialsNotAvailableException {
        if (scheme == null) {
            return null;
        }

        try {
            JTextField userField = new JTextField();
            JPasswordField passwordField = new JPasswordField();
            int response;

            if (scheme instanceof NTLMScheme) {
                JTextField domainField = new JTextField();
                Object[] msg = {
                    host + ":" + port + " requires Windows authentication",
                    "Domain",
                    domainField,
                    "User Name",
                    userField,
                    "Password",
                    passwordField
                };
                response = JOptionPane.showConfirmDialog(null, msg, "Authenticate",
                        JOptionPane.OK_CANCEL_OPTION);

                if ((response == JOptionPane.CANCEL_OPTION) ||
                        (response == JOptionPane.CLOSED_OPTION)) {
                    throw new CredentialsNotAvailableException("User cancled windows authentication.");
                }

                return new NTCredentials(userField.getText(), new String(passwordField.getPassword()),
                        host, domainField.getText());


            } else if (scheme instanceof RFC2617Scheme) {
                Object[] msg = {
                    host + ":" + port + " requires authentication with the realm '" +
                    scheme.getRealm() + "'",
                    "User Name",
                    userField,
                    "Password",
                    passwordField
                };

                response = JOptionPane.showConfirmDialog(null, msg, "Authenticate",
                        JOptionPane.OK_CANCEL_OPTION);

                if ((response == JOptionPane.CANCEL_OPTION) ||
                        (response == JOptionPane.CLOSED_OPTION)) {
                    throw new CredentialsNotAvailableException("User cancled windows authentication.");
                }


                return new UsernamePasswordCredentials(userField.getText(),
                        new String(passwordField.getPassword()));

            } else {

                throw new CredentialsNotAvailableException("Unsupported authentication scheme: " +
                        scheme.getSchemeName());

            }
        } catch (IOException ioe) {

            throw new CredentialsNotAvailableException(ioe.getMessage(), ioe);

        }
    }
}