uk.ac.ucl.cs.cmic.giftcloud.restserver.PasswordAuthenticationWrapper.java Source code

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Here is the source code for uk.ac.ucl.cs.cmic.giftcloud.restserver.PasswordAuthenticationWrapper.java

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/*=============================================================================
    
  GIFT-Cloud: A data storage and collaboration platform
    
  Copyright (c) University College London (UCL). All rights reserved.
  Released under the Modified BSD License
  github.com/gift-surg
    
  Parts of this software are derived from XNAT
http://www.xnat.org
Copyright (c) 2014, Washington University School of Medicine
All Rights Reserved
See license/XNAT_license.txt
    
=============================================================================*/

package uk.ac.ucl.cs.cmic.giftcloud.restserver;

import org.apache.commons.lang.ArrayUtils;
import org.apache.commons.lang.StringUtils;
import uk.ac.ucl.cs.cmic.giftcloud.util.Optional;

import java.net.PasswordAuthentication;
import java.net.URL;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

class PasswordAuthenticationWrapper {
    private Optional<PasswordAuthentication> passwordAuthentication = Optional.empty();
    private static final Pattern userInfoPattern = Pattern.compile("([^:@/]*):([^:@]*)");

    static final String FIRST_LOGIN_MESSAGE = "Please enter your GIFT-Cloud login details.";
    static final String ERROR_LOGIN_MESSAGE = "Incorrect username or password. Please try again.";

    void set(final PasswordAuthentication authenticator) {
        passwordAuthentication = Optional.of(authenticator);
    }

    Optional<PasswordAuthentication> get() {
        return passwordAuthentication;
    }

    boolean isValid() {
        return passwordAuthentication.isPresent();
    }

    static Optional<PasswordAuthentication> getPasswordAuthenticationFromURL(final URL url) {
        final String userInfo = url.getUserInfo();
        if (null != userInfo) {
            final Matcher m = userInfoPattern.matcher(userInfo);
            if (m.matches()) {
                final PasswordAuthentication authenticator = new PasswordAuthentication(m.group(1),
                        m.group(2).toCharArray());
                return Optional.of(authenticator);
            }
        }
        return Optional.empty();
    }

    static Optional<PasswordAuthentication> getPasswordAuthenticationFromUsernamePassword(
            final Optional<String> userName, final Optional<char[]> password) {
        if (userName.isPresent() && password.isPresent() && StringUtils.isNotBlank(userName.get())
                && ArrayUtils.isNotEmpty(password.get())) {
            return Optional.of(new PasswordAuthentication(userName.get(), password.get()));
        } else {
            return Optional.empty();
        }
    }

}