utils.java

这是linux下ssl vpn的实现程序

package com.sslexplorer.vpn.util;

import java.io.BufferedReader;
import java.io.File;
import java.io.InputStreamReader;

/**
 * <p>Title: </p>
 *
 * <p>Description: </p>
 *
 * <p>Copyright: Copyright (c) 2005</p>
 *
 * <p>Company: </p>
 *
 * @author not attributable
 * @version 1.0
 */
public class Utils {

        /**
           * Get the users home directory and if were operating in the MSJVM then
           * try to get the users profile, since MSJVM does not return the correct
           * location for the user.home system property.
           *
           * @return String
           */
          public static String getHomeDirectory() {

            String userHome = System.getProperty("user.home");

            if (System.getProperty("java.vendor") != null &&
                System.getProperty("java.vendor").startsWith("Microsoft")) {

              try {
                Process process = Runtime.getRuntime().exec(new String[] {
                                                            "cmd.exe",
                                                            "/C",
                                                            "echo",
                                                            "%USERPROFILE%"});
                BufferedReader reader = new BufferedReader(new InputStreamReader(process.
                    getInputStream()));

                String profileDir = reader.readLine();

                File f = new File(profileDir);
                if (f.exists()) {
                  userHome = profileDir;
                }
              }
              catch (Throwable t) {
                // Ignore, we cant do anything about it!!
              }

            }
            return userHome;
  }
}