src/test/java/org/apache/maven/shared/jarsigner/JarSignerUtilTest.java

package org.apache.maven.shared.jarsigner;

/*
 * 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.
 */

import java.io.File;
import java.io.IOException;
import java.util.Map;
import java.util.jar.Attributes;
import java.util.jar.JarFile;
import java.util.jar.Manifest;

/**
 * Created on 11/8/13.
 *
 * @author Tony Chemit
 * @since 1.1
 */
public class JarSignerUtilTest
    extends AbstractJarSignerTest
{

    // Fix MSHARED-277
    public void testUnsignArchive()
        throws Exception
    {

        File target = prepareTestJar( "javax.persistence_2.0.5.v201212031355.jar" );

        assertTrue( JarSignerUtil.isArchiveSigned( target ) );

        // check that manifest contains some digest attributes
        Manifest originalManifest = readManifest( target );
        assertTrue( containsDigest( originalManifest ) );

        Manifest originalCleanManifest = JarSignerUtil.buildUnsignedManifest( originalManifest );
        assertFalse( containsDigest( originalCleanManifest ) );

        assertTrue( originalCleanManifest.equals( JarSignerUtil.buildUnsignedManifest( originalCleanManifest ) ) );

        JarSignerUtil.unsignArchive( target );

        assertFalse( JarSignerUtil.isArchiveSigned( target ) );

        // check that manifest has no digest entry
        // see https://jira.codehaus.org/browse/MSHARED-314
        Manifest manifest = readManifest( target );

        Manifest cleanManifest = JarSignerUtil.buildUnsignedManifest( manifest );
        assertFalse( containsDigest( cleanManifest ) );

        assertTrue( manifest.equals( cleanManifest ) );
        assertTrue( manifest.equals( originalCleanManifest ) );

    }

    private Manifest readManifest( File file )
        throws IOException
    {
        JarFile jarFile = new JarFile( file );

        Manifest manifest = jarFile.getManifest();

        jarFile.close();

        return manifest;
    }

    private boolean containsDigest( Manifest manifest )
    {
        for ( Map.Entry<String, Attributes> entry : manifest.getEntries().entrySet() )
        {
            Attributes attr = entry.getValue();

            for ( Map.Entry<Object, Object> objectEntry : attr.entrySet() )
            {
                String attributeKey = String.valueOf( objectEntry.getKey() );
                if ( attributeKey.endsWith( "-Digest" ) )
                {
                    return true;
                }
            }
        }
        return false;
    }
}