package org.apache.maven.plugins.gpg;
   
   /*
    * 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.List;
  
  import org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.plugin.logging.Log;
  import org.apache.maven.project.MavenProject;
  
  /**
   * A base class for all classes that implements signing of files.
   *
   * @author Dennis Lundberg
   * @since 1.5
   */
  public abstract class AbstractGpgSigner
  {
      private static final String GPG_PASSPHRASE = "gpg.passphrase";
  
      public static final String SIGNATURE_EXTENSION = ".asc";
  
      protected boolean useAgent;
  
      protected boolean isInteractive = true;
  
      protected boolean defaultKeyring = true;
  
      protected String keyname;
  
      private Log log;
  
      protected String passphrase;
  
      private File outputDir;
  
      private File buildDir;
  
      private File baseDir;
  
      protected File homeDir;
  
      protected String secretKeyring;
  
      protected String publicKeyring;
  
      protected String lockMode;
  
      protected List<String> args;
  
      public Log getLog()
      {
          return log;
      }
  
      public void setArgs( List<String> args )
      {
          this.args = args;
      }
  
      public void setInteractive( boolean b )
      {
          isInteractive = b;
      }
  
      public void setLockMode( String lockMode )
      {
          this.lockMode = lockMode;
      }
  
      public void setUseAgent( boolean b )
      {
          useAgent = b;
      }
  
      public void setDefaultKeyring( boolean enabled )
      {
          defaultKeyring = enabled;
      }
  
     public void setKeyName( String s )
     {
         keyname = s;
     }
 
     public void setLog( Log log )
     {
         this.log = log;
     }
 
     public void setPassPhrase( String s )
     {
         passphrase = s;
     }
 
     public void setOutputDirectory( File out )
     {
         outputDir = out;
     }
 
     public void setBuildDirectory( File out )
     {
         buildDir = out;
     }
 
     public void setBaseDirectory( File out )
     {
         baseDir = out;
     }
 
     public void setHomeDirectory( File homeDirectory )
     {
         homeDir = homeDirectory;
     }
 
     public void setSecretKeyring( String path )
     {
         secretKeyring = path;
     }
 
     public void setPublicKeyring( String path )
     {
         publicKeyring = path;
     }
 
     /**
      * Create a detached signature file for the provided file.
      *
      * @param file The file to sign
      * @return A reference to the generated signature file
      * @throws MojoExecutionException if signature generation fails
      */
     public File generateSignatureForArtifact( File file )
         throws MojoExecutionException
     {
         // ----------------------------------------------------------------------------
         // Set up the file and directory for the signature file
         // ----------------------------------------------------------------------------
 
         File signature = new File( file + SIGNATURE_EXTENSION );
 
         boolean isInBuildDir = false;
         if ( buildDir != null )
         {
             File parent = signature.getParentFile();
             if ( buildDir.equals( parent ) )
             {
                 isInBuildDir = true;
             }
         }
         if ( !isInBuildDir && outputDir != null )
         {
             String fileDirectory = "";
             File signatureDirectory = signature;
 
             while ( ( signatureDirectory = signatureDirectory.getParentFile() ) != null )
             {
                 if ( !signatureDirectory.equals( baseDir ) )
                 {
                     fileDirectory = signatureDirectory.getName() + File.separatorChar + fileDirectory;
                 }
                 else
                 {
                     break;
                 }
             }
             signatureDirectory = new File( outputDir, fileDirectory );
             if ( !signatureDirectory.exists() )
             {
                 signatureDirectory.mkdirs();
             }
             signature = new File( signatureDirectory, file.getName() + SIGNATURE_EXTENSION );
         }
 
         if ( signature.exists() )
         {
             signature.delete();
         }
 
         // ----------------------------------------------------------------------------
         // Generate the signature file
         // ----------------------------------------------------------------------------
 
         generateSignatureForFile( file, signature );
 
         return signature;
     }
 
     /**
      * Generate the detached signature file for the provided file.
      *
      * @param file The file to sign
      * @param signature The file in which the generate signature will be put
      * @throws MojoExecutionException if signature generation fails
      */
     protected abstract void generateSignatureForFile( File file, File signature )
         throws MojoExecutionException;
 
     private MavenProject findReactorProject( MavenProject prj )
     {
         if ( prj.getParent() != null && prj.getParent().getBasedir() != null && prj.getParent().getBasedir().exists() )
         {
             return findReactorProject( prj.getParent() );
         }
         return prj;
     }
 
     public String getPassphrase( MavenProject project )
         throws IOException
     {
         String pass = null;
 
         if ( project != null )
         {
             pass = project.getProperties().getProperty( GPG_PASSPHRASE );
             if ( pass == null )
             {
                 MavenProject prj2 = findReactorProject( project );
                 pass = prj2.getProperties().getProperty( GPG_PASSPHRASE );
             }
         }
         if ( pass == null )
         {
             pass = new String( readPassword( "GPG Passphrase: " ) );
         }
         if ( project != null )
         {
             findReactorProject( project ).getProperties().setProperty( GPG_PASSPHRASE, pass );
         }
         return pass;
     }
 
     private char[] readPassword( String prompt )
         throws IOException
     {
         return System.console().readPassword();
     }
 }