securityconfigdialog.java

一个用java写的mail.里面的代码值得我们去研究！学习。

/*
** $Id: SecurityConfigDialog.java,v 1.4 2001/05/07 12:37:22 kunugi Exp $
**
** Copyright (c) 2000-2001 Jeff Gay
** on behalf of ICEMail.org <http://www.icemail.org>
** Copyright (c) 1998-2000 by Timothy Gerard Endres
** 
** This program is free software.
** 
** You may redistribute it and/or modify it under the terms of the GNU
** General Public License as published by the Free Software Foundation.
** Version 2 of the license should be included with this distribution in
** the file LICENSE, as well as License.html. If the license is not
** included with this distribution, you may find a copy at the FSF web
** site at 'www.gnu.org' or 'www.fsf.org', or you may write to the
** Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139 USA.
**
** THIS SOFTWARE IS PROVIDED AS-IS WITHOUT WARRANTY OF ANY KIND,
** NOT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY. THE AUTHOR
** OF THIS SOFTWARE, ASSUMES _NO_ RESPONSIBILITY FOR ANY
** CONSEQUENCE RESULTING FROM THE USE, MODIFICATION, OR
** REDISTRIBUTION OF THIS SOFTWARE. 
*/

package org.icemail.mail.smime;

import java.awt.*;
import java.awt.event.*;
import java.io.File;
import java.io.FileInputStream;
import java.io.ByteArrayInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Vector;
import java.util.Hashtable;
import java.util.Enumeration;

import java.security.cert.CertificateException;

import javax.mail.*;
import javax.swing.*; 
import javax.swing.event.*; 
import javax.swing.border.*; 

import org.icemail.mail.Configuration; 

import org.icemail.smime.MissingCertificateException;
import org.icemail.smime.PasswordCancelException;

import org.icemail.util.AWTUtilities; 
import org.icemail.util.StreamUtilities; 
import org.icemail.util.UserProperties; 

import iaik.asn1.ObjectID;
import iaik.asn1.structures.AVA;
import iaik.asn1.structures.RDN;
import iaik.asn1.structures.Name;
import iaik.pkcs.PKCSException;
import iaik.pkcs.PKCSParsingException;
import iaik.pkcs.pkcs12.NetscapeP12;
import iaik.pkcs.pkcs12.MicrosoftP12;
import iaik.x509.X509Certificate;


public class SecurityConfigDialog
  extends JDialog
  implements ActionListener, ItemListener
{
  private Frame     frame;
  private JComboBox idCombo;
  private JComboBox certCombo;
  private JTextArea idInfoText;
  private JTextArea certInfoText;
  private JButton   idViewBtn;
  private JButton   certViewBtn;

  private Hashtable idTable;
  private Hashtable certTable;


  public
  SecurityConfigDialog( Frame frame ) {
    super( frame, "Configure Security Information", true );

    this.frame = frame;

    SecurityConfig cfgSec = SecurityConfig.getInstance();

    this.idTable = (Hashtable) cfgSec.getIDSTable().clone();

    this.certTable = (Hashtable) cfgSec.getCertificateTable().clone();

    this.establishContents();

    this.loadComboBoxes();

    this.pack();

    Dimension sz = this.getPreferredSize();
    int w = UserProperties.getProperty( "securityConfigDialog.width", sz.width );
    int h = UserProperties.getProperty( "securityConfigDialog.height", sz.height );
    this.setSize( w, h );
    this.setLocation( AWTUtilities.computeDialogLocation( this ) );
  }

  private void
  loadComboBoxes() {
    Enumeration enum;

    if ( this.idCombo.getItemCount() > 0 )
      this.idCombo.removeAllItems();

    enum = this.idTable.keys();
    for ( ; enum.hasMoreElements() ; ) {
      this.idCombo.addItem( enum.nextElement() );
    }

    if ( this.certCombo.getItemCount() > 0 )
      this.certCombo.removeAllItems();

    enum = this.certTable.keys();
    for ( ; enum.hasMoreElements() ; ) {
      this.certCombo.addItem( enum.nextElement() );
    }
  }

  public void
  itemStateChanged( ItemEvent evt ) {
    if ( evt.getStateChange() == ItemEvent.SELECTED ) {
      X509Certificate[] certChain = null;
      String email = (String) evt.getItem();

      try {

        if ( evt.getItemSelectable() == this.idCombo ) {
          DigitalIDInfo info = (DigitalIDInfo) this.idTable.get( email );

          certChain = info.getCertificateChain();

          if ( certChain != null ) {
            StringBuffer buf = new StringBuffer();
            for ( int ci = 0 ; ci < certChain.length ; ++ci ) {
              Name nm = (Name) certChain[ci].getSubjectDN();
              buf.append( "Certificate #" + ci + ":\n" );

              Enumeration rnum = nm.elements();
              for ( int ri = 0 ; rnum.hasMoreElements() ; ++ri ) {
                RDN rdn = (RDN) rnum.nextElement();

                Enumeration anum = rdn.elements();
                for ( int ai = 0 ; anum.hasMoreElements() ; ++ai ) {
                  AVA ava = (AVA) anum.nextElement();
                  buf.append( "  " + ava.getType().getName() );
                  buf.append( " = " + ava.getValue() + "\n" );
                }
              }
            }

            this.idInfoText.setText( buf.toString() );
            this.idViewBtn.setEnabled( true );
          }
        } else {
          CertificateInfo info = (CertificateInfo) this.certTable.get( email );

          if ( info.isCertificateChain() ) {
            certChain = info.getCertificateChain();
          } else {
            X509Certificate cert = info.getCertificate();
            if ( cert != null ) {
              certChain = new X509Certificate[1];
              certChain[0] = cert;
            }
          }

          if ( certChain != null ) {
            StringBuffer buf = new StringBuffer();
            for ( int ci = 0 ; ci < certChain.length ; ++ci ) {
              Name nm = (Name) certChain[ci].getSubjectDN();
              buf.append( "Certificate #" + ci + ":\n" );

              Enumeration rnum = nm.elements();
              for ( int ri = 0 ; rnum.hasMoreElements() ; ++ri ) {
                RDN rdn = (RDN) rnum.nextElement();

                Enumeration anum = rdn.elements();
                for ( int ai = 0 ; anum.hasMoreElements() ; ++ai ) {
                  AVA ava = (AVA) anum.nextElement();
                  buf.append( "  " + ava.getType().getName() );
                  buf.append( " = " + ava.getValue() + "\n" );
                }
              }
            }

            this.certInfoText.setText( buf.toString() );
            this.certViewBtn.setEnabled( true );
          }
        }
      } catch ( PasswordCancelException ex ) {
        String message =
          "Could not obtain the digital certificate for\n"
          + "the email address '"
          + email
          + "'.\n"
          + "A proper password was not provided.";

        JOptionPane.showMessageDialog( null, message, "No Certificate",
                                       JOptionPane.INFORMATION_MESSAGE );
      } catch ( PKCSException ex ) {
        ex.printStackTrace();
      }
    } else {
      if ( evt.getItemSelectable() == this.idCombo ) {
        this.idViewBtn.setEnabled( false );
      } else {
        this.certViewBtn.setEnabled( false );
      }
    }
  }

  public void
  actionPerformed( ActionEvent event ) {
    boolean disposeIt = false;
    String command = event.getActionCommand();

    if ( command.equals( "SAVE" ) ) {
      Configuration config = Configuration.getInstance();

      SecurityConfig secCfg = SecurityConfig.getInstance();

      String errMsg = null;

      try {
        secCfg.saveP12Tables( this.idTable, this.certTable );
        config.saveProperties();
        disposeIt = true;
      } catch ( IOException ex ) {
        ex.printStackTrace();
        errMsg =
          "An IO exception occurred saving the secutiry configuration.\n"
          + ex.getMessage();
      } catch ( PKCSException ex ) {
        ex.printStackTrace();
        errMsg =
          "A PKCS exception occurred saving the secutiry configuration.\n"
          + ex.getMessage();
      } catch ( PasswordCancelException ex ) {
        errMsg =
          "Failed to save the security configuration.\n"
          + "A password was not provided to encrypt the\n"
          + "digital ID for '"
          + ex.getMessage()
          + "'.";
      }

      if ( errMsg != null ) {
        JOptionPane.showMessageDialog( null, errMsg, "Error", JOptionPane.WARNING_MESSAGE );
      }
    } else if ( command.equals( "CANCEL" ) ) {
      disposeIt = true;
    } else if ( command.equals( "IMPORTID" ) ) {
      FileDialog fDlg = new FileDialog( this.frame, "Import", FileDialog.LOAD );

      fDlg.setDirectory( "E:\\crypto\\Certificates" );

      fDlg.show();
      
      String fName = fDlg.getFile();
      String dName = fDlg.getDirectory();

      if ( fName != null && dName != null ) {
        this.importDigitalId( dName, fName );
      }
    } else if ( command.equals( "IMPORTCERT" ) ) {
      FileDialog fDlg = new FileDialog( this.frame, "Import", FileDialog.LOAD );

      fDlg.setDirectory( "E:\\crypto\\Certificates" );

      fDlg.show();
      
      String fName = fDlg.getFile();
      String dName = fDlg.getDirectory();

      if ( fName != null && dName != null ) {
        this.importCertificate( dName, fName );
      }
    } else if ( command.equals( "VIEWID" ) ) {
      String email = (String) this.idCombo.getSelectedItem();
      if ( email != null ) {
        try {