source: trunk/src/org/expeditee/io/ProxyAuth.java@ 1102

/**
 *    ProxyAuth.java
 *    Copyright (C) 2010 New Zealand Digital Library, http://expeditee.org
 *
 *    This program is free software: you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation, either version 3 of the License, or
 *    (at your option) any later version.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.expeditee.io;

import java.net.Authenticator;
import java.net.PasswordAuthentication;

public class ProxyAuth extends Authenticator {

        public static final int MAX_ATTEMPTS = 5;
        
        private String httpUser = null, httpPass = null, httpsUser = null, httpsPass = null;
        private int attempts = 0;
        
        public ProxyAuth() {
        }
        
        @Override
        public PasswordAuthentication getPasswordAuthentication() {
                // TODO: differentiate between HTTP and HTTPS proxies somehow
                // currently just chooses whichever one is set, preferentially http
                System.out.println("Authenticating");
                // stop it from breaking from a redirect loop
                attempts++;
                if(attempts > MAX_ATTEMPTS) {
                        return null;
                }
                String user = httpUser != null ? httpUser : httpsUser;
                char[] pass = httpPass != null ? httpPass.toCharArray() : (httpsPass != null ? httpsPass.toCharArray() : null);
                if(user == null || user.length() == 0 || pass == null || pass.length == 0) {
                        return null;
                }
                return new PasswordAuthentication(user, pass);
        }
        
        public void setup(String user, String pass) {
                // System.out.println("setup proxy");
                this.httpUser = user;
                this.httpPass = pass;
                this.httpsUser = user;
                this.httpsPass = pass;
                attempts = 0;
        }
}