/* From http://java.sun.com/docs/books/tutorial/index.html */
/*
* Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* -Redistribution of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* -Redistribution in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING
* ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
* OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN MIDROSYSTEMS, INC. ("SUN")
* AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE
* AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
* DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST
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*
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import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileDescriptor;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
public class SecurityManagerTest {
public static void main(String[] args) throws Exception {
try {
System
.setSecurityManager(new PasswordSecurityManager(
"Booga Booga"));
} catch (SecurityException se) {
System.err.println("SecurityManager already set!");
}
DataInputStream in = new DataInputStream(new FileInputStream(
"inputtext.txt"));
DataOutputStream out = new DataOutputStream(new FileOutputStream(
"outputtext.txt"));
String inputString;
while ((inputString = in.readLine()) != null) {
out.writeBytes(inputString);
out.writeByte('\n');
}
in.close();
out.close();
}
}
class PasswordSecurityManager extends SecurityManager {
private String password;
public PasswordSecurityManager(String password) {
super();
this.password = password;
}
private boolean accessOK() {
int c;
DataInputStream in = new DataInputStream(System.in);
String response;
System.out.println("What's the secret password?");
try {
response = in.readLine();
if (response.equals(password))
return true;
else
return false;
} catch (IOException e) {
return false;
}
}
public void checkRead(FileDescriptor filedescriptor) {
if (!accessOK())
throw new SecurityException("Not a Chance!");
}
public void checkRead(String filename) {
if (!accessOK())
throw new SecurityException("No Way!");
}
public void checkRead(String filename, Object executionContext) {
if (!accessOK())
throw new SecurityException("Forget It!");
}
public void checkWrite(FileDescriptor filedescriptor) {
if (!accessOK())
throw new SecurityException("Not!");
}
public void checkWrite(String filename) {
if (!accessOK())
throw new SecurityException("Not Even!");
}
}