installer.java

java 实现的签名方案

/**
 *	j4sign - an open, multi-platform digital signature solution
 *	Copyright (c) 2004 Roberto Resoli - Servizio Sistema Informativo - Comune di Trento.
 *
 *	This program is free software; you can redistribute it and/or
 *	modify it under the terms of the GNU General Public License
 *	as published by the Free Software Foundation; either version 2
 *	of the License, or (at your option) any later version.
 *
 *	This program is distributed in the hope that it will be useful,
 *	but WITHOUT ANY WARRANTY; without even the implied warranty of
 *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *	GNU General Public License for more details.
 *
 *	You should have received a copy of the GNU General Public License
 *	along with this program; if not, write to the Free Software
 *	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */
/*
 * $Header: /cvsroot/j4sign/j4sign/src/java/core/it/trento/comune/j4sign/installer/Installer.java,v 1.2 2005/09/09 07:27:33 resoli Exp $
 * $Revision: 1.2 $
 * $Date: 2005/09/09 07:27:33 $
 */

package it.trento.comune.j4sign.installer;


import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;



/**
 * @author resolir
 * 
 * TODO To change the template for this generated type comment go to Window -
 * Preferences - Java - Code Style - Code Templates
 */
public class Installer {

    public static void main(String[] args) {
        System.out.println("===== Smart Card Access Extension installation ====");
        String extDir = System.getProperty("java.ext.dirs");
        Installer installer = new Installer();
        try {
            String osName = System.getProperty("os.name");
            installer.installFile("SmartCardAccess-signed.jar", extDir);
            if(osName.indexOf("Windows") != -1){
                System.out.println("Windows OS detected.");
                installer.installFile("OCFPCSC1.dll", extDir);
                installer.installFile("pkcs11wrapper.dll", extDir);
            }else if(osName.indexOf("Linux") != -1){
                System.out.println("Linux OS detected.");
                installer.installFile("libOCFPCSC1.so", extDir);
                installer.installFile("libpkcs11wrapper.so", extDir);
            }else
                System.out.println("Native libraries for '"+osName+"' not available! Giving up.");
            
            System.out.println("==== Smart Card Access Extension installed. ====");
        } catch (Exception e) {
            System.out.println("Error: "+e);
            System.out.println("==== Smart Card Access Extension NOT installed! ====");
            
        }
        
        
    }

    private void installFile(String name, String destDir) throws IOException {
        File f = new File(destDir + System.getProperty("file.separator") + name);
        
        System.out.println("Installing '"+f.getAbsolutePath()+"'");
        
        boolean exists = f.isFile();
        
        InputStream in = getClass().getResourceAsStream(name);
        
        
        if (in!=null) {
            
            BufferedInputStream bufIn = new BufferedInputStream(in);
            try {
                OutputStream fout = new BufferedOutputStream(
                        new FileOutputStream(f));
                byte[] bytes = new byte[1024 * 10];
                for (int n = 0; n != -1; n = bufIn.read(bytes))
                    fout.write(bytes, 0, n);

                fout.close();
            } catch (IOException ioe) {
                // We might get an IOException trying to overwrite an existing
                // file if there is another process using the DLL.
                // If this happens, ignore errors.
                if (!exists)
                    throw ioe;
            }
        }else
            throw new IOException("Found no resource named: "+name);
        

    }
}