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DSS Service Provider Interface contains the contract interface shared between the applet and the server-side of DSS.
There is a newer version: 6.0.d4j.2
/**
 * DSS - Digital Signature Services
 * Copyright (C) 2015 European Commission, provided under the CEF programme
 *
 * This file is part of the "DSS - Digital Signature Services" project.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */
package eu.europa.esig.dss.client.http;

/**
 * This enum lists all network protocols that can be used during the signature creation or validation: OCSP, CRL, AIA, TSL...
 *
 *
 *
 *
 *
 */
public enum Protocol {

	FILE("file"), HTTP("http"), HTTPS("https"), LDAP("ldap"), FTP("ftp");

	private String name;

	private Protocol(final String name) {

		this.name = name;
	}

	/**
	 * @return the name of the protocol
	 */
	public String getName() {
		return name;
	}

	/**
	 * Indicates if the given string represents HTTPS protocol.
	 *
	 * @param name {@code String} to be checked
	 * @return true or false
	 */
	public static boolean isHttps(final String name) {
		return HTTPS.name.equalsIgnoreCase(name);
	}

	/**
	 * Indicates if the given string represents HTTP protocol.
	 *
	 * @param name {@code String} to be checked
	 * @return true or false
	 */
	public static boolean isHttp(final String name) {
		return HTTP.name.equalsIgnoreCase(name);
	}

	/**
	 * Indicates if the given URL uses FILE protocol
	 *
	 * @param urlString to be checked
	 * @return true or false
	 */
	public static boolean isFileUrl(final String urlString) {
		return urlString !=null && urlString.startsWith(FILE.name);
	}

	/**
	 * Indicates if the given URL uses HTTP protocol
	 *
	 * @param urlString to be checked
	 * @return true or false
	 */
	public static boolean isHttpUrl(final String urlString) {
		return urlString !=null && urlString.startsWith(HTTP.name);
	}

	/**
	 * Indicates if the given URL uses FTP protocol
	 *
	 * @param urlString to be checked
	 * @return true or false
	 */
	public static boolean isFtpUrl(final String urlString) {
		return urlString !=null && urlString.startsWith(FTP.name);
	}

	/**
	 * Indicates if the given URL uses LDAP protocol
	 *
	 * @param urlString to be checked
	 * @return true or false
	 */
	public static boolean isLdapUrl(final String urlString) {
		return urlString !=null && urlString.startsWith(LDAP.name);
	}

	/**
	 * Indicates if the given URL uses the current protocol
	 *
	 * @param urlString to be checked
	 * @return true or false
	 */
	public boolean isTheSame(final String urlString) {

		return urlString != null && urlString.startsWith(name);
	}

	/**
	 * This method try to retrieve the protocol indicated by the given URL string.
	 *
	 * @param urlString to be analysed
	 * @return found {@code Protocol} or {@code null}
	 */
	public static Protocol getFrom(final String urlString) {

		if (HTTP.isTheSame(urlString)) {
			return HTTP;
		} else if (HTTPS.isTheSame(urlString)) {
			return HTTPS;
		} else if (LDAP.isTheSame(urlString)) {
			return LDAP;
		} else if (FTP.isTheSame(urlString)) {
			return FTP;
		} else if (FILE.isTheSame(urlString)) {
			return FILE;
		}
		return null;
	}
}