/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you 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.apache.xml.security.test.dom.secure_val;


import java.io.File;

import org.apache.xml.security.signature.XMLSignature;
import org.apache.xml.security.signature.XMLSignatureException;
import org.apache.xml.security.test.dom.interop.InteropTestBase;
import org.apache.xml.security.utils.Constants;
import org.apache.xml.security.utils.XMLUtils;
import org.junit.jupiter.api.Test;
import org.w3c.dom.Element;

import static org.apache.xml.security.test.XmlSecTestEnvironment.resolveFile;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.junit.jupiter.api.Assertions.fail;


/**
 * This is a test for a forbidden algorithm (MD5) when secure validation is enabled.
 */
public class ForbiddenAlgorithmTest extends InteropTestBase {

    static org.slf4j.Logger LOG =
        org.slf4j.LoggerFactory.getLogger(ForbiddenAlgorithmTest.class);

    static {
        org.apache.xml.security.Init.init();
    }

    @Test
    public void testMD5Digest() throws Exception {
        boolean success = readAndVerifySignature("signature-joseph-exc.xml", false);

        assertTrue(success);

        try {
            readAndVerifySignature("signature-joseph-exc.xml", true);
            fail("Failure expected when secure validation is enabled");
        } catch (XMLSignatureException ex) {
            String error = "It is forbidden to use algorithm http://www.w3.org/2001/04/xmldsig-more#md5 "
                + "when secure validation is enabled";
            assertEquals(ex.getMessage(), error);
        }
    }


    private boolean readAndVerifySignature(String file, boolean secValidation) throws Exception {
        File f = resolveFile("src", "test", "resources", "interop", "c14n", "Y2", file);
        org.w3c.dom.Document doc = XMLUtils.read(f, false);

        Element sigElement = (Element) doc.getElementsByTagNameNS(Constants.SignatureSpecNS, Constants._TAG_SIGNATURE)
            .item(0);
        XMLSignature signature = new XMLSignature(sigElement, f.toURI().toURL().toString(), secValidation);
        return signature.checkSignatureValue(signature.getKeyInfo().getPublicKey());
    }

}