org.italiangrid.voms.request.impl.LegacyVOMSResponse Maven / Gradle / Ivy

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Java APIs to validate and request VOMS attribute certificates
There is a newer version: 3.3.2
/**
 * Copyright (c) Istituto Nazionale di Fisica Nucleare, 2006-2012.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.italiangrid.voms.request.impl;

import java.util.ArrayList;
import java.util.List;

import org.italiangrid.voms.request.VOMSErrorMessage;
import org.italiangrid.voms.request.VOMSResponse;
import org.italiangrid.voms.request.VOMSWarningMessage;
import org.italiangrid.voms.util.VOMSBase64Decoder;
import org.italiangrid.voms.util.XMLUtils;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;

public class LegacyVOMSResponse implements VOMSResponse {

	private static int ERROR_OFFSET = 1000;

	protected Document xmlResponse;

	/**
	 * Builds a VOMSResponse starting from a DOM an XML document (see
	 * {@link Document}).
	 * 
	 * @param res
	 */
	public LegacyVOMSResponse(Document res) {

		xmlResponse = res;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.glite.voms.contact.VOMSResponseIF#getVersion()
	 */
	public int getVersion() {

		Element versionElement = (Element) xmlResponse.getElementsByTagName("version").item(0);

		if (versionElement == null) {

			return 0;
		}

		return Integer.parseInt(versionElement.getFirstChild().getNodeValue());
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.glite.voms.contact.VOMSResponseIF#hasErrors()
	 */
	public boolean hasErrors() {

		return errorMessages() != null;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.glite.voms.contact.VOMSResponseIF#hasWarnings()
	 */
	public boolean hasWarnings() {

		return warningMessages() != null;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.glite.voms.contact.VOMSResponseIF#getAC()
	 */
	public byte[] getAC() {

		Element acElement = (Element) xmlResponse.getElementsByTagName("ac").item(0);

		byte[] ac = VOMSBase64Decoder.decode(acElement.getFirstChild().getNodeValue());

		if (ac == null)
			ac = new GoodACDecodingStrategy().decode(acElement.getFirstChild().getNodeValue());

		return ac;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.glite.voms.contact.VOMSResponseIF#errorMessages()
	 */
	public VOMSErrorMessage[] errorMessages() {

		NodeList nodes = xmlResponse.getElementsByTagName("item");

		if (nodes.getLength() == 0)
			return null;

		List errorList = new ArrayList();

		for (int i = 0; i < nodes.getLength(); i++) {

			Element itemElement = (Element) nodes.item(i);

			Element numberElement = (Element) itemElement.getElementsByTagName("number").item(0);
			Element messageElement = (Element) itemElement.getElementsByTagName("message").item(0);

			int number = Integer.parseInt(numberElement.getFirstChild().getNodeValue());
			if (number >= ERROR_OFFSET)
				errorList.add(new VOMSErrorMessage(number, messageElement.getFirstChild()
						.getNodeValue()));

		}
		
		if (errorList.isEmpty())
			return null;

		return errorList.toArray(new VOMSErrorMessage[errorList.size()]);
	}

	public VOMSWarningMessage[] warningMessages() {

		NodeList nodes = xmlResponse.getElementsByTagName("item");

		if (nodes.getLength() == 0)
			return null;

		List warningList = new ArrayList();

		for (int i = 0; i < nodes.getLength(); i++) {

			Element itemElement = (Element) nodes.item(i);

			Element numberElement = (Element) itemElement.getElementsByTagName("number").item(0);
			Element messageElement = (Element) itemElement.getElementsByTagName("message").item(0);

			int number = Integer.parseInt(numberElement.getFirstChild().getNodeValue());

			if (number < ERROR_OFFSET)
				warningList.add(new VOMSWarningMessage(number, messageElement.getFirstChild()
						.getNodeValue()));

		}

		if (warningList.isEmpty())
			return null;
		
		return warningList.toArray(new VOMSWarningMessage[warningList.size()]);
	}

	public String getXMLAsString() {

		return XMLUtils.documentAsString(xmlResponse);

	}

}