package org.codehaus.mojo.webstart.dependency.task;
   
   /*
    * 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 org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.shared.jarsigner.JarSignerUtil;
  import org.codehaus.mojo.webstart.dependency.JnlpDependencyConfig;
  import org.codehaus.mojo.webstart.sign.SignTool;
  import org.codehaus.plexus.component.annotations.Component;
  import org.codehaus.plexus.component.annotations.Requirement;
  
  import java.io.File;
  import java.io.IOException;
  
  /**
   * To unsign a already sign
   * Created on 1/4/14.
   *
   * @author Tony Chemit <chemit@codelutin.com>
   * @since 1.0-beta-5
   */
  @Component( role = JnlpDependencyTask.class, hint = UnsignTask.ROLE_HINT, instantiationStrategy = "per-lookup" )
  public class UnsignTask
      extends AbstractJnlpTask
  {
      public static final String ROLE_HINT = "UnsignTask";
  
      /**
       * Sign tool.
       */
      @Requirement
      private SignTool signTool;
  
      /**
       * {@inheritDoc}
       */
      public void check( JnlpDependencyConfig config )
      {
          if ( config == null )
          {
              throw new NullPointerException( "config can't be null" );
          }
          if ( config.getArtifact() == null )
          {
              throw new NullPointerException( "config.artifact can't be null" );
          }
          if ( config.getArtifact().getFile() == null )
          {
              throw new NullPointerException( "config.artifact.file can't be null" );
          }
          if ( !config.isSign() )
          {
              throw new IllegalStateException( "Can't sign if config.isSign is false" );
          }
  
          File file = config.getArtifact().getFile();
  
          boolean jarSigned;
          try
          {
              jarSigned = signTool.isJarSigned( file );
          }
          catch ( MojoExecutionException e )
          {
              throw new RuntimeException( e.getMessage(), e.getCause() );
          }
  
          if ( jarSigned && !config.isCanUnsign() )
          {
              throw new IllegalStateException( "Can't unsign the config.artifact.file if config.isCanUsign is false" );
          }
      }
  
      /**
       * {@inheritDoc}
       */
      public File execute( JnlpDependencyConfig config, File jarFile )
          throws JnlpDependencyTaskException
      {
  
          boolean jarSigned;
          try
         {
             jarSigned = JarSignerUtil.isArchiveSigned( jarFile );
         }
         catch ( IOException e )
         {
             throw new JnlpDependencyTaskException( "Could not detect if jar signed: " + jarFile, e );
         }
 
         if ( jarSigned )
         {
 
             // unsign jar
 
             verboseLog( config, "Unsign jar " + jarFile );
             try
             {
                 JarSignerUtil.unsignArchive( jarFile );
             }
             catch ( IOException e )
             {
 
                 throw new JnlpDependencyTaskException( "Could not find unsign jar " + jarFile, e );
             }
         }
         else
         {
 
             // not signed jar do nothing
             verboseLog( config, "Jar " + jarFile + " is not signed." );
         }
         return jarFile;
     }
 }