/*
    * 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.maven.shared.jarsigner;
  
  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;
  
  import org.junit.jupiter.api.Test;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  /**
   * Created on 11/8/13.
   *
   * @author Tony Chemit
   * @since 1.1
   */
  class JarSignerUtilTest extends AbstractJarSignerTest {
  
      @Test
      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));
  
          assertEquals(originalCleanManifest, JarSignerUtil.buildUnsignedManifest(originalCleanManifest));
  
          JarSignerUtil.unsignArchive(target);
  
          assertFalse(JarSignerUtil.isArchiveSigned(target));
  
          // check that manifest has no digest entry
          // see https://issues.apache.org/jira/browse/MSHARED-314
          Manifest manifest = readManifest(target);
  
          Manifest cleanManifest = JarSignerUtil.buildUnsignedManifest(manifest);
          assertFalse(containsDigest(cleanManifest));
  
          assertEquals(manifest, cleanManifest);
          assertEquals(manifest, 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;
      }
  }